/* roulang page: index */
:root {
            --color-primary: #1D6FF2;
            --color-primary-dark: #1759D1;
            --color-secondary: #00D9F5;
            --color-secondary-dark: #00AEC6;
            --color-accent: #FF6B35;
            --color-accent-dark: #E55A2B;
            --color-bg: #F5F8FE;
            --color-bg-alt: #EEF4FD;
            --color-card: #FFFFFF;
            --color-text: #0F1B33;
            --color-text-secondary: #4A5A72;
            --color-border: #E3EAF5;
            --color-success: #2BB673;
            --color-footer: #0F1B33;
            --color-footer-text: #B8C4D9;
            --radius-card: 14px;
            --radius-btn: 9px;
            --radius-img: 16px;
            --shadow-sm: 0 2px 8px rgba(15, 27, 51, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 27, 51, 0.08);
            --shadow-lg: 0 12px 32px rgba(15, 27, 51, 0.14);
            --shadow-hover: 0 4px 12px rgba(15, 27, 51, 0.10), 0 12px 32px rgba(15, 27, 51, 0.14);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            --container-max: 1280px;
            --section-padding-desktop: 88px 0;
            --section-padding-mobile: 56px 0;
            --nav-height: 72px;
            --transition: all 0.25s ease;
        }

        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            font-size: 16px;
            -webkit-text-size-adjust: 100%;
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: var(--color-secondary-dark);
            text-decoration: underline;
        }

        button {
            font-family: var(--font-family);
            cursor: pointer;
            border: none;
            background: none;
            transition: var(--transition);
        }

        button:focus,
        a:focus,
        input:focus {
            outline: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 6px;
        }

        input {
            font-family: var(--font-family);
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4 {
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-text);
        }

        h1 {
            font-size: clamp(32px, 4.5vw, 46px);
            line-height: 1.15;
            font-weight: 700;
            letter-spacing: -0.5px;
        }

        h2 {
            font-size: clamp(24px, 3vw, 30px);
            font-weight: 700;
            letter-spacing: -0.3px;
        }

        h3 {
            font-size: clamp(17px, 2vw, 19px);
            font-weight: 600;
        }

        p {
            color: var(--color-text-secondary);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .section-padding {
            padding: var(--section-padding-desktop);
        }

        .section-bg-white {
            background-color: var(--color-card);
        }

        .section-bg-alt {
            background-color: var(--color-bg-alt);
        }

        .section-bg-default {
            background-color: var(--color-bg);
        }

        .section-divider {
            border-top: 1px solid var(--color-border);
        }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 40px;
        }

        .section-header .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background: rgba(29, 111, 242, 0.08);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-header h2 {
            margin-bottom: 14px;
        }

        .section-header p {
            font-size: 15px;
            line-height: 1.75;
        }

        .section-header.left-align {
            text-align: left;
            margin-left: 0;
            max-width: 100%;
        }

        .section-header.left-align .section-tag {
            margin-left: 0;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            text-decoration: none;
            letter-spacing: 0.5px;
            white-space: nowrap;
            line-height: 1;
        }

        .logo:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .logo-icon svg {
            width: 18px;
            height: 18px;
            fill: #fff;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
            text-decoration: none;
            padding: 6px 0;
            position: relative;
            white-space: nowrap;
            letter-spacing: 0.3px;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--color-primary);
            transition: var(--transition);
            border-radius: 2px;
        }

        .main-nav a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .main-nav a:hover::after {
            width: 100%;
        }

        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .main-nav a.active::after {
            width: 100%;
        }

        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 32px;
            height: 28px;
            justify-content: center;
            align-items: center;
            border-radius: 6px;
            background: transparent;
            border: 1px solid var(--color-border);
            padding: 4px;
        }

        .nav-hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background-color: var(--color-text);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-hamburger:hover {
            background-color: var(--color-bg-alt);
        }

        .nav-hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-nav {
            display: none;
            position: absolute;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background-color: #fff;
            border-bottom: 1px solid var(--color-border);
            padding: 16px 24px 24px;
            box-shadow: var(--shadow-md);
            flex-direction: column;
            gap: 4px;
            z-index: 999;
        }

        .mobile-nav.open {
            display: flex;
        }

        .mobile-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            text-decoration: none;
            padding: 12px 16px;
            border-radius: 8px;
            letter-spacing: 0.3px;
        }

        .mobile-nav a:hover {
            background-color: var(--color-bg-alt);
            color: var(--color-primary);
            text-decoration: none;
        }

        .mobile-nav a.active {
            background-color: rgba(29, 111, 242, 0.08);
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ========== Hero ========== */
        .hero-section {
            background-color: var(--color-bg);
            padding: 64px 0 72px;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(0, 217, 245, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(29, 111, 242, 0.05) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-section .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-content {
            max-width: 560px;
        }

        .hero-tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 20px;
        }

        .hero-tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background: rgba(29, 111, 242, 0.08);
            padding: 5px 14px;
            border-radius: 20px;
            letter-spacing: 0.4px;
        }

        .hero-content h1 {
            margin-bottom: 18px;
            font-weight: 700;
            letter-spacing: -0.5px;
        }

        .hero-content .hero-subtitle {
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text-secondary);
            margin-bottom: 28px;
            max-width: 520px;
        }

        .hero-cta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 24px;
        }

        .hero-visual {
            position: relative;
        }

        .hero-visual img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-img);
            box-shadow: var(--shadow-md);
            object-fit: cover;
            aspect-ratio: 16/10;
        }

        .hero-visual .hero-badge {
            position: absolute;
            bottom: 16px;
            left: 16px;
            background: rgba(15, 27, 51, 0.85);
            backdrop-filter: blur(8px);
            color: #fff;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.3px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-visual .hero-badge .dot {
            width: 6px;
            height: 6px;
            background: var(--color-success);
            border-radius: 50%;
            display: inline-block;
        }

        .hero-data-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            padding-top: 16px;
            border-top: 1px solid var(--color-border);
        }

        .hero-data-item {
            font-size: 13px;
            color: var(--color-text-secondary);
        }

        .hero-data-item strong {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            display: block;
            line-height: 1.3;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 12px 26px;
            letter-spacing: 0.3px;
            text-decoration: none;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn:hover {
            text-decoration: none;
        }

        .btn-primary {
            background-color: var(--color-primary);
            color: #fff;
            border: 1px solid var(--color-primary);
        }

        .btn-primary:hover {
            background-color: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }

        .btn-secondary {
            background-color: #fff;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn-secondary:hover {
            background-color: #E8F1FF;
            color: var(--color-primary);
            text-decoration: none;
        }

        .btn-accent {
            background-color: var(--color-accent);
            color: #fff;
            border: 1px solid var(--color-accent);
        }

        .btn-accent:hover {
            background-color: var(--color-accent-dark);
            border-color: var(--color-accent-dark);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }

        /* ========== 痛点卡片 ========== */
        .pain-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 8px;
        }

        .pain-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .pain-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(29, 111, 242, 0.25);
        }

        .pain-card .pain-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(29, 111, 242, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--color-primary);
            flex-shrink: 0;
            margin-bottom: 4px;
        }

        .pain-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
        }

        .pain-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-secondary);
        }

        /* ========== 方案概述横条 ========== */
        .solution-banner {
            background: linear-gradient(120deg, var(--color-primary) 0%, #2E86FF 55%, var(--color-secondary) 130%);
            border-radius: var(--radius-card);
            padding: 40px 36px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            box-shadow: var(--shadow-md);
            position: relative;
            overflow: hidden;
        }

        .solution-banner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 220px;
            height: 220px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
            pointer-events: none;
        }

        .solution-banner .solution-banner-text {
            max-width: 680px;
            color: #fff;
            position: relative;
            z-index: 1;
        }

        .solution-banner .solution-banner-text p {
            color: rgba(255, 255, 255, 0.88);
            font-size: 15px;
            line-height: 1.75;
        }

        .solution-banner .solution-banner-text strong {
            color: #fff;
        }

        .solution-banner .btn {
            position: relative;
            z-index: 1;
        }

        /* ========== 核心方案卡片 ========== */
        .core-plan-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .core-plan-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 26px 22px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
            position: relative;
        }

        .core-plan-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(29, 111, 242, 0.25);
        }

        .core-plan-card .plan-index {
            font-size: 13px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }

        .core-plan-card h3 {
            font-size: 17px;
            font-weight: 600;
        }

        .core-plan-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-secondary);
        }

        .core-plan-card .plan-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: 4px;
        }

        .core-plan-card .plan-link:hover {
            color: var(--color-secondary-dark);
        }

        /* ========== 方法步骤 ========== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .step-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            counter-increment: step;
        }

        .step-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .step-card::before {
            content: counter(step);
            font-size: 36px;
            font-weight: 700;
            color: rgba(29, 111, 242, 0.15);
            line-height: 1;
            display: block;
            margin-bottom: 12px;
            letter-spacing: -1px;
        }

        .step-card h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 13px;
            line-height: 1.7;
            color: var(--color-text-secondary);
        }

        /* ========== 成果数据 ========== */
        .result-data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .result-data-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .result-data-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .result-data-card .result-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            font-feature-settings: "tnum" 1;
            letter-spacing: -0.5px;
        }

        .result-data-card .result-number .unit {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-secondary);
            margin-left: 2px;
        }

        .result-data-card .result-label {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-top: 6px;
            font-weight: 500;
        }

        /* ========== 玩家证言 ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 26px 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .testimonial-card .testimonial-quote {
            font-size: 14px;
            line-height: 1.75;
            color: var(--color-text);
            flex: 1;
        }

        .testimonial-card .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
            padding-top: 12px;
            border-top: 1px solid var(--color-border);
        }

        .testimonial-card .testimonial-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(29, 111, 242, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            color: var(--color-primary);
            flex-shrink: 0;
        }

        .testimonial-card .testimonial-name {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text);
        }

        .testimonial-card .testimonial-role {
            font-size: 12px;
            color: var(--color-text-secondary);
        }

        /* ========== 适用人群 ========== */
        .audience-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .audience-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }

        .audience-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(29, 111, 242, 0.25);
        }

        .audience-card .audience-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(29, 111, 242, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--color-primary);
            margin-bottom: 6px;
        }

        .audience-card h3 {
            font-size: 16px;
            font-weight: 600;
        }

        .audience-card p {
            font-size: 13px;
            line-height: 1.65;
            color: var(--color-text-secondary);
        }

        .audience-card a {
            font-size: 13px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: 4px;
        }

        /* ========== 品牌介绍 ========== */
        .brand-story-section {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            padding: 48px 44px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
        }

        .brand-story-section .brand-story-content {
            max-width: 880px;
        }

        .brand-story-section .brand-story-content p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--color-text-secondary);
            margin-bottom: 16px;
        }

        .brand-story-section .brand-story-content p:last-child {
            margin-bottom: 0;
        }

        .brand-story-section .brand-story-content strong {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ========== 最新资讯 ========== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .news-card .news-image {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background-color: var(--color-bg-alt);
        }

        .news-card .news-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }

        .news-card .news-tag-row {
            display: flex;
            gap: 8px;
        }

        .news-card .news-tag {
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 16px;
            background: rgba(0, 217, 245, 0.1);
            color: #008A9E;
            letter-spacing: 0.3px;
        }

        .news-card .news-tag.primary-tag {
            background: rgba(29, 111, 242, 0.08);
            color: var(--color-primary);
        }

        .news-card h3 {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.45;
            color: var(--color-text);
        }

        .news-card h3 a {
            color: var(--color-text);
            text-decoration: none;
        }

        .news-card h3 a:hover {
            color: var(--color-primary);
        }

        .news-card .news-excerpt {
            font-size: 13px;
            line-height: 1.65;
            color: var(--color-text-secondary);
            flex: 1;
        }

        .news-card .news-meta {
            font-size: 12px;
            color: var(--color-text-secondary);
            display: flex;
            align-items: center;
            gap: 12px;
            padding-top: 8px;
            border-top: 1px solid var(--color-border);
        }

        /* ========== 热门专题 ========== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .topic-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            display: flex;
            flex-direction: column;
        }

        .topic-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .topic-card .topic-image {
            width: 100%;
            aspect-ratio: 16/8;
            object-fit: cover;
            background-color: var(--color-bg-alt);
        }

        .topic-card .topic-body {
            padding: 22px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }

        .topic-card .topic-label {
            font-size: 11px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--color-accent);
        }

        .topic-card h3 {
            font-size: 17px;
            font-weight: 600;
        }

        .topic-card h3 a {
            color: var(--color-text);
            text-decoration: none;
        }

        .topic-card h3 a:hover {
            color: var(--color-primary);
        }

        .topic-card .topic-desc {
            font-size: 13px;
            line-height: 1.65;
            color: var(--color-text-secondary);
        }

        .topic-card .topic-count {
            font-size: 12px;
            font-weight: 600;
            color: var(--color-text-secondary);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .topic-card .topic-count span {
            color: var(--color-primary);
            font-weight: 700;
        }

        /* ========== 数据指标带 ========== */
        .data-metrics-section {
            background: var(--color-footer);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            box-shadow: var(--shadow-md);
        }

        .data-metrics-section .section-header h2 {
            color: #fff;
        }

        .data-metrics-section .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }

        .data-metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 12px;
        }

        .data-metric-item {
            text-align: center;
            padding: 16px;
        }

        .data-metric-item .metric-value {
            font-size: 40px;
            font-weight: 700;
            color: var(--color-secondary);
            line-height: 1.2;
            font-feature-settings: "tnum" 1;
            letter-spacing: -0.5px;
        }

        .data-metric-item .metric-value .metric-unit {
            font-size: 16px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.7);
            margin-left: 3px;
        }

        .data-metric-item .metric-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
            font-weight: 500;
        }

        /* ========== 装备推荐 ========== */
        .gear-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .gear-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .gear-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .gear-card .gear-image {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background-color: var(--color-bg-alt);
        }

        .gear-card .gear-body {
            padding: 18px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }

        .gear-card .gear-tag {
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 16px;
            background: rgba(255, 107, 53, 0.1);
            color: var(--color-accent);
            display: inline-block;
        }

        .gear-card h3 {
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
        }

        .gear-card .gear-desc {
            font-size: 12px;
            line-height: 1.6;
            color: var(--color-text-secondary);
            flex: 1;
        }

        .gear-card .gear-price {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-primary);
        }

        /* ========== FAQ ========== */
        .faq-wrapper {
            max-width: 840px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(29, 111, 242, 0.2);
            box-shadow: var(--shadow-md);
        }

        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            transition: var(--transition);
            width: 100%;
            text-align: left;
            background: transparent;
            border: none;
        }

        .faq-item .faq-question:hover {
            color: var(--color-primary);
        }

        .faq-item .faq-question .faq-icon {
            font-size: 20px;
            color: var(--color-text-secondary);
            transition: var(--transition);
            flex-shrink: 0;
            line-height: 1;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            color: var(--color-primary);
        }

        .faq-item .faq-answer {
            padding: 0 22px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-secondary);
        }

        .faq-item.open .faq-answer {
            padding: 0 22px 18px;
            max-height: 300px;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(120deg, var(--color-primary) 0%, #2E86FF 60%, #00B8D4 130%);
            border-radius: var(--radius-card);
            padding: 56px 48px;
            text-align: center;
            box-shadow: var(--shadow-md);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 260px;
            height: 260px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section h2 {
            color: #fff;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            line-height: 1.7;
            max-width: 560px;
            margin: 0 auto 28px;
            position: relative;
            z-index: 1;
        }

        .cta-section .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
            position: relative;
            z-index: 1;
        }

        .cta-section .btn-accent {
            background-color: var(--color-accent);
            border-color: var(--color-accent);
            color: #fff;
        }

        .cta-section .btn-accent:hover {
            background-color: var(--color-accent-dark);
            border-color: var(--color-accent-dark);
        }

        .cta-section .btn-white-outline {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.5);
        }

        .cta-section .btn-white-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-color: #fff;
        }

        /* ========== 订阅社区 ========== */
        .subscribe-section {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 44px 40px;
            box-shadow: var(--shadow-sm);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
        }

        .subscribe-section .subscribe-info h2 {
            margin-bottom: 10px;
        }

        .subscribe-section .subscribe-info p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-secondary);
            margin-bottom: 0;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
        }

        .subscribe-form input {
            flex: 1;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            padding: 12px 18px;
            font-size: 14px;
            color: var(--color-text);
            transition: var(--transition);
            min-width: 0;
        }

        .subscribe-form input::placeholder {
            color: #9AA8BC;
        }

        .subscribe-form input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(29, 111, 242, 0.12);
            outline: none;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background-color: var(--color-footer);
            color: var(--color-footer-text);
            padding: 56px 0 28px;
            margin-top: 0;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 40px;
        }

        .site-footer .footer-brand .logo {
            color: #fff;
            margin-bottom: 14px;
        }

        .site-footer .footer-brand .logo:hover {
            color: var(--color-secondary);
        }

        .site-footer .footer-brand p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            line-height: 1.7;
            max-width: 300px;
        }

        .site-footer h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            text-decoration: none;
            transition: var(--transition);
        }

        .site-footer .footer-links a:hover {
            color: var(--color-secondary);
            text-decoration: none;
        }

        .site-footer .footer-contact {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .site-footer .footer-contact a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
        }

        .site-footer .footer-contact a:hover {
            color: var(--color-secondary);
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }

        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            text-decoration: none;
        }

        .site-footer .footer-bottom a:hover {
            color: var(--color-secondary);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1200px) {
            .core-plan-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(4, 1fr);
            }
            .audience-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .gear-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .data-metrics-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 992px) {
            .main-nav {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .hero-section .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-content {
                max-width: 100%;
            }
            .hero-visual img {
                aspect-ratio: 16/9;
            }
            .pain-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .core-plan-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .result-data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .audience-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .gear-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .subscribe-section {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 767px) {
            :root {
                --section-padding-desktop: 56px 0;
            }
            h1 {
                font-size: 30px;
            }
            h2 {
                font-size: 24px;
            }
            .container {
                padding: 0 16px;
            }
            .hero-section {
                padding: 48px 0 56px;
            }
            .hero-data-strip {
                gap: 16px;
            }
            .pain-cards-grid {
                grid-template-columns: 1fr;
            }
            .core-plan-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .result-data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .audience-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .data-metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .data-metric-item .metric-value {
                font-size: 30px;
            }
            .gear-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .brand-story-section {
                padding: 28px 20px;
            }
            .solution-banner {
                padding: 28px 22px;
                flex-direction: column;
                text-align: left;
            }
            .cta-section {
                padding: 36px 20px;
            }
            .subscribe-section {
                padding: 28px 20px;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .section-header {
                margin-bottom: 28px;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 15px;
            }
        }

        @media (max-width: 520px) {
            h1 {
                font-size: 26px;
            }
            h2 {
                font-size: 21px;
            }
            .hero-tag-row {
                flex-wrap: wrap;
            }
            .hero-cta-row {
                flex-direction: column;
                gap: 10px;
            }
            .hero-cta-row .btn {
                width: 100%;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .result-data-grid {
                grid-template-columns: 1fr;
            }
            .audience-grid {
                grid-template-columns: 1fr;
            }
            .data-metrics-grid {
                grid-template-columns: 1fr;
            }
            .data-metrics-section {
                padding: 32px 20px;
            }
            .gear-grid {
                grid-template-columns: 1fr;
            }
            .cta-section .cta-buttons {
                flex-direction: column;
            }
            .cta-section .btn {
                width: 100%;
            }
        }

/* roulang page: category2 */
:root {
  --color-primary: #1D6FF2;
  --color-primary-dark: #1759D1;
  --color-secondary: #00D9F5;
  --color-secondary-dark: #00AEC6;
  --color-accent: #FF6B35;
  --color-accent-dark: #E55A2B;
  --color-bg: #F5F8FE;
  --color-bg-alt: #EEF4FD;
  --color-card: #FFFFFF;
  --color-text: #0F1B33;
  --color-text-secondary: #4A5A72;
  --color-border: #E3EAF5;
  --color-success: #2BB673;
  --color-footer: #0F1B33;
  --color-footer-text: #B8C4D9;
  --radius-card: 14px;
  --radius-btn: 9px;
  --radius-img: 16px;
  --shadow-sm: 0 2px 8px rgba(15, 27, 51, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 27, 51, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 27, 51, 0.14);
  --shadow-hover: 0 4px 12px rgba(15, 27, 51, 0.10), 0 12px 32px rgba(15, 27, 51, 0.14);
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --container-max: 1280px;
  --section-padding-desktop: 56px 0;
  --section-padding-mobile: 40px 0;
  --nav-height: 72px;
  --transition: all 0.25s ease;
}
html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-family);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition);
}
a:hover {
  color: var(--color-secondary-dark);
  text-decoration: underline;
}
button {
  font-family: var(--font-family);
  cursor: pointer;
  border: none;
  background: none;
  transition: var(--transition);
}
button:focus,
a:focus,
input:focus {
  outline: none;
}
button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 6px;
}
input {
  font-family: var(--font-family);
}
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}
.section-padding {
  padding: var(--section-padding-desktop);
}
.section-bg-white {
  background-color: var(--color-card);
}
.section-bg-alt {
  background-color: var(--color-bg-alt);
}
.section-bg-default {
  background-color: var(--color-bg);
}
.section-divider {
  border-top: 1px solid var(--color-border);
}
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 40px;
}
.section-header .section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(29, 111, 242, 0.08);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}
.section-header h2 {
  margin-bottom: 14px;
}
.section-header p {
  font-size: 15px;
  line-height: 1.75;
}
.section-header.left-align {
  text-align: left;
  margin-left: 0;
  max-width: 100%;
}
.section-header.left-align .section-tag {
  margin-left: 0;
}
h1 {
  font-size: 32px;
  line-height: 1.25;
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
}
h2 {
  font-size: 26px;
  line-height: 1.2;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}
h3 {
  font-size: 18px;
  line-height: 1.3;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}
p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.7;
}
/* ========== 导航 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  height: var(--nav-height);
  display: flex;
  align-items: center;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: 0.5px;
  white-space: nowrap;
  line-height: 1;
}
.logo:hover {
  color: var(--color-primary);
  text-decoration: none;
}
.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.logo-icon svg {
  width: 18px;
  height: 18px;
  fill: #fff;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.main-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}
.main-nav a:hover {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom-color: var(--color-secondary);
}
.main-nav a.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 600;
}
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-card);
}
.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}
.mobile-nav {
  display: none;
  background: var(--color-card);
  border-top: 1px solid var(--color-border);
  padding: 12px 0;
}
.mobile-nav a {
  display: block;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: var(--transition);
}
.mobile-nav a:hover {
  background: var(--color-bg-alt);
  color: var(--color-primary);
  text-decoration: none;
  border-left-color: var(--color-primary);
}
.mobile-nav a.active {
  color: var(--color-primary);
  background: rgba(29, 111, 242, 0.05);
  border-left-color: var(--color-primary);
  font-weight: 600;
}
/* ========== 面包屑 ========== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: var(--transition);
}
.breadcrumb a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}
.breadcrumb .sep {
  color: var(--color-border);
}
.breadcrumb .current {
  color: var(--color-primary);
  font-weight: 600;
}
/* ========== 分类 Hero ========== */
.category-hero {
  background: var(--color-bg);
  padding: 48px 0 32px;
  border-bottom: 1px solid var(--color-border);
}
.category-hero .container {
  display: flex;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
}
.category-hero .hero-info {
  flex: 1;
  min-width: 280px;
}
.category-hero .hero-side {
  flex: 0 0 320px;
  max-width: 320px;
}
.category-hero .hero-side img {
  border-radius: var(--radius-img);
  box-shadow: var(--shadow-md);
  aspect-ratio: 16/9;
  object-fit: cover;
  width: 100%;
}
.category-hero h1 {
  margin-bottom: 16px;
  font-size: 32px;
  line-height: 1.25;
}
.category-hero .hero-desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-text-secondary);
  max-width: 640px;
}
.category-hero .hero-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
}
.category-hero .hero-tags .tag {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-primary);
  background: rgba(29, 111, 242, 0.08);
  padding: 4px 12px;
  border-radius: 20px;
}
/* ========== 筛选工具条 ========== */
.filter-bar {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  box-shadow: var(--shadow-sm);
  margin-bottom: 28px;
}
.filter-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.filter-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
}
.filter-btn {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 6px 16px;
  transition: var(--transition);
  white-space: nowrap;
}
.filter-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: rgba(29, 111, 242, 0.05);
}
.filter-btn.active {
  color: #fff;
  background: var(--color-primary);
  border-color: var(--color-primary);
}
.sort-group {
  margin-left: auto;
  display: flex;
  gap: 8px;
  align-items: center;
}
.sort-btn {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  padding: 6px 10px;
  border-radius: 20px;
  transition: var(--transition);
  white-space: nowrap;
}
.sort-btn:hover {
  color: var(--color-primary);
  background: var(--color-bg-alt);
}
.sort-btn.active {
  color: var(--color-primary);
  font-weight: 600;
  background: rgba(29, 111, 242, 0.08);
}
/* ========== 文章卡片列表 ========== */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.article-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.article-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: rgba(29, 111, 242, 0.3);
}
.article-card .card-img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-bg-alt);
}
.article-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}
.article-card:hover .card-img img {
  transform: scale(1.03);
}
.article-card .card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.article-card .card-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.article-card .card-tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-secondary-dark);
  background: rgba(0, 217, 245, 0.1);
  padding: 2px 10px;
  border-radius: 20px;
}
.article-card .card-date {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-left: auto;
}
.article-card h3 {
  font-size: 17px;
  line-height: 1.4;
  font-weight: 600;
  margin: 0;
}
.article-card h3 a {
  color: var(--color-text);
  text-decoration: none;
  transition: var(--transition);
}
.article-card h3 a:hover {
  color: var(--color-primary);
  text-decoration: none;
}
.article-card .card-excerpt {
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
/* ========== 专题推荐 ========== */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.featured-card {
  position: relative;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  min-height: 240px;
  display: flex;
  align-items: flex-end;
}
.featured-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.featured-card .featured-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.featured-card .featured-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 27, 51, 0.85) 0%, rgba(15, 27, 51, 0.2) 60%, rgba(15, 27, 51, 0.05) 100%);
}
.featured-card .featured-content {
  position: relative;
  z-index: 2;
  padding: 24px;
  color: #fff;
}
.featured-card .featured-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: #fff;
  background: var(--color-accent);
  padding: 2px 12px;
  border-radius: 20px;
  margin-bottom: 10px;
}
.featured-card h3 {
  font-size: 20px;
  line-height: 1.4;
  color: #fff;
  margin-bottom: 8px;
}
.featured-card p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.6;
  margin: 0;
}
/* ========== 趋势数据板块 ========== */
.trend-section {
  background: var(--color-footer);
  color: #fff;
}
.trend-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 24px;
}
.trend-item {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-card);
  padding: 22px;
  text-align: center;
}
.trend-number {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
  font-feature-settings: "tnum";
}
.trend-label {
  font-size: 13px;
  color: var(--color-secondary);
  font-weight: 500;
}
.trend-bars {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  height: 120px;
  padding: 0 8px;
}
.trend-bar {
  flex: 1;
  background: linear-gradient(to top, var(--color-primary) 0%, var(--color-secondary) 100%);
  border-radius: 6px 6px 0 0;
  min-height: 10px;
  transition: var(--transition);
  position: relative;
}
.trend-bar:hover {
  opacity: 0.8;
}
.trend-bar .bar-label {
  position: absolute;
  bottom: -24px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  color: #fff;
  white-space: nowrap;
}
.trend-bar .bar-value {
  position: absolute;
  top: -22px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  color: var(--color-secondary);
  font-weight: 600;
}
/* ========== FAQ ========== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  box-shadow: var(--shadow-md);
}
.faq-question {
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  transition: var(--transition);
  user-select: none;
}
.faq-question:hover {
  color: var(--color-primary);
}
.faq-question .faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  transition: var(--transition);
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 20px;
  transition: max-height 0.3s ease, padding 0.3s ease;
}
.faq-item.open .faq-answer {
  max-height: 200px;
  padding: 0 20px 18px;
}
.faq-answer p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin: 0;
}
/* ========== CTA 转化区 ========== */
.cta-section {
  background: rgba(255, 107, 53, 0.06);
  border: 1px solid rgba(255, 107, 53, 0.2);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  text-align: center;
}
.cta-section h2 {
  margin-bottom: 10px;
}
.cta-section p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}
.cta-btn {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 32px;
  border-radius: var(--radius-btn);
  text-decoration: none;
  transition: var(--transition);
  border: none;
}
.cta-btn:hover {
  background: var(--color-accent-dark);
  color: #fff;
  text-decoration: none;
  box-shadow: var(--shadow-md);
}
/* ========== 热门作者板块 ========== */
.author-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.author-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.author-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.author-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  flex-shrink: 0;
}
.author-info h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 4px;
}
.author-info p {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin: 0;
}
/* ========== 页脚 ========== */
.site-footer {
  background: var(--color-footer);
  color: var(--color-footer-text);
  padding: 48px 0 0;
  margin-top: 0;
}
.site-footer a {
  color: var(--color-footer-text);
  text-decoration: none;
  transition: var(--transition);
}
.site-footer a:hover {
  color: var(--color-secondary);
  text-decoration: underline;
}
.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.site-footer .footer-brand .logo {
  color: #fff;
  margin-bottom: 14px;
}
.site-footer .footer-brand .logo:hover {
  color: var(--color-secondary);
}
.site-footer .footer-brand .logo-icon {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
}
.site-footer .footer-brand p {
  font-size: 13px;
  color: var(--color-footer-text);
  line-height: 1.7;
  max-width: 280px;
}
.site-footer h4 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 14px;
}
.site-footer .footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.site-footer .footer-links a {
  font-size: 13px;
}
.site-footer .footer-contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
}
.site-footer .footer-contact a {
  font-size: 13px;
}
.site-footer .footer-contact span {
  font-size: 12px;
  color: rgba(184, 196, 217, 0.7);
}
.site-footer .footer-bottom {
  padding: 18px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 12px;
  color: rgba(184, 196, 217, 0.6);
}
.site-footer .footer-bottom a {
  font-size: 12px;
  color: rgba(184, 196, 217, 0.6);
}
/* ========== 响应式 ========== */
@media (max-width: 992px) {
  .main-nav {
    display: none;
  }
  .menu-toggle {
    display: flex;
  }
  .mobile-nav.open {
    display: block;
  }
  .article-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .featured-grid {
    grid-template-columns: 1fr;
  }
  .trend-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .author-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .site-footer .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }
  .category-hero .hero-side {
    flex: 0 0 260px;
    max-width: 260px;
  }
}
@media (max-width: 768px) {
  .article-grid {
    grid-template-columns: 1fr;
  }
  .trend-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .author-grid {
    grid-template-columns: 1fr;
  }
  .category-hero .container {
    flex-direction: column;
  }
  .category-hero .hero-side {
    flex: 1;
    max-width: 100%;
    width: 100%;
  }
  .section-padding {
    padding: var(--section-padding-mobile);
  }
  h1 {
    font-size: 26px;
  }
  h2 {
    font-size: 22px;
  }
  .filter-bar {
    flex-direction: column;
    align-items: flex-start;
  }
  .sort-group {
    margin-left: 0;
  }
  .trend-bars {
    height: 80px;
  }
}
@media (max-width: 520px) {
  .site-footer .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .trend-grid {
    grid-template-columns: 1fr;
  }
  .container {
    padding: 0 16px;
  }
  .featured-card {
    min-height: 200px;
  }
  .featured-card .featured-content {
    padding: 18px;
  }
  .featured-card h3 {
    font-size: 17px;
  }
}

/* roulang page: category1 */
:root {
      --color-primary: #1D6FF2;
      --color-primary-dark: #1759D1;
      --color-secondary: #00D9F5;
      --color-secondary-dark: #00AEC6;
      --color-accent: #FF6B35;
      --color-accent-dark: #E55A2B;
      --color-bg: #F5F8FE;
      --color-bg-alt: #EEF4FD;
      --color-card: #FFFFFF;
      --color-text: #0F1B33;
      --color-text-secondary: #4A5A72;
      --color-border: #E3EAF5;
      --color-success: #2BB673;
      --color-footer: #0F1B33;
      --color-footer-text: #B8C4D9;
      --radius-card: 14px;
      --radius-btn: 9px;
      --radius-img: 16px;
      --shadow-sm: 0 2px 8px rgba(15, 27, 51, 0.06);
      --shadow-md: 0 8px 24px rgba(15, 27, 51, 0.08);
      --shadow-lg: 0 12px 32px rgba(15, 27, 51, 0.14);
      --shadow-hover: 0 4px 12px rgba(15, 27, 51, 0.10), 0 12px 32px rgba(15, 27, 51, 0.14);
      --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
      --container-max: 1280px;
      --section-padding-desktop: 88px 0;
      --section-padding-mobile: 56px 0;
      --nav-height: 72px;
      --transition: all 0.25s ease;
    }

    *,
    *::before,
    *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      font-size: 16px;
      -webkit-text-size-adjust: 100%;
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-family);
      font-size: 15px;
      line-height: 1.7;
      color: var(--color-text);
      background-color: var(--color-bg);
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    a {
      color: var(--color-primary);
      text-decoration: none;
      transition: var(--transition);
    }

    a:hover {
      color: var(--color-secondary-dark);
      text-decoration: underline;
    }

    button,
    input {
      font-family: var(--font-family);
    }

    button {
      cursor: pointer;
      border: none;
      background: none;
      transition: var(--transition);
    }

    button:focus,
    a:focus,
    input:focus {
      outline: none;
    }

    button:focus-visible,
    a:focus-visible,
    input:focus-visible {
      outline: 3px solid var(--color-primary);
      outline-offset: 2px;
      border-radius: 6px;
    }

    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
      width: 100%;
    }

    .section-padding {
      padding: var(--section-padding-desktop);
    }

    .section-bg-white {
      background-color: var(--color-card);
    }

    .section-bg-alt {
      background-color: var(--color-bg-alt);
    }

    .section-bg-default {
      background-color: var(--color-bg);
    }

    .section-divider {
      border-top: 1px solid var(--color-border);
    }

    .section-header {
      text-align: center;
      max-width: 680px;
      margin: 0 auto 40px;
    }

    .section-header .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      color: var(--color-primary);
      background: rgba(29, 111, 242, 0.08);
      padding: 4px 14px;
      border-radius: 20px;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }

    .section-header h2 {
      margin-bottom: 14px;
      font-size: 28px;
      line-height: 1.25;
      color: var(--color-text);
    }

    .section-header p {
      font-size: 15px;
      line-height: 1.75;
      color: var(--color-text-secondary);
    }

    .section-header.left-align {
      text-align: left;
      margin-left: 0;
      max-width: 100%;
    }

    .section-header.left-align .section-tag {
      margin-left: 0;
    }

    /* ===== 导航 ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.97);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--color-border);
      height: var(--nav-height);
      display: flex;
      align-items: center;
    }

    .site-header .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      position: relative;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: var(--color-text);
      text-decoration: none;
      letter-spacing: 0.5px;
      white-space: nowrap;
      line-height: 1;
    }

    .logo:hover {
      color: var(--color-primary);
      text-decoration: none;
    }

    .logo-icon {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .logo-icon svg {
      width: 18px;
      height: 18px;
      fill: #fff;
    }

    .main-nav {
      display: flex;
      align-items: center;
      gap: 32px;
    }

    .main-nav a {
      font-size: 14px;
      font-weight: 500;
      color: var(--color-text-secondary);
      text-decoration: none;
      padding: 8px 0;
      position: relative;
      white-space: nowrap;
      transition: var(--transition);
    }

    .main-nav a:hover {
      color: var(--color-primary);
      text-decoration: none;
    }

    .main-nav a.active {
      color: var(--color-primary);
      font-weight: 600;
    }

    .main-nav a.active::after {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      height: 2px;
      background-color: var(--color-primary);
      border-radius: 2px;
    }

    .nav-toggle {
      display: none;
      width: 40px;
      height: 40px;
      background: transparent;
      border: 1px solid var(--color-border);
      border-radius: 8px;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 5px;
      position: relative;
      z-index: 1001;
    }

    .nav-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      background: var(--color-text);
      border-radius: 2px;
      transition: var(--transition);
    }

    .nav-toggle.open span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }

    .nav-toggle.open span:nth-child(2) {
      opacity: 0;
    }

    .nav-toggle.open span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    /* ===== 分类页 Hero ===== */
    .category-hero {
      background-color: var(--color-bg);
      border-bottom: 1px solid var(--color-border);
      padding: 32px 0 36px;
    }

    .category-hero .container {
      display: flex;
      align-items: stretch;
      gap: 32px;
    }

    .category-hero-content {
      flex: 1 1 55%;
    }

    .breadcrumb {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      font-size: 13px;
      color: var(--color-text-secondary);
      margin-bottom: 16px;
    }

    .breadcrumb a {
      color: var(--color-text-secondary);
      text-decoration: none;
    }

    .breadcrumb a:hover {
      color: var(--color-primary);
      text-decoration: underline;
    }

    .breadcrumb .divider {
      color: #B0BFD1;
    }

    .category-hero h1 {
      font-size: 32px;
      line-height: 1.2;
      margin-bottom: 12px;
      color: var(--color-text);
    }

    .category-hero p {
      font-size: 15px;
      line-height: 1.75;
      color: var(--color-text-secondary);
      margin-bottom: 18px;
      max-width: 720px;
    }

    .category-hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 500;
      color: var(--color-primary);
      background: rgba(29, 111, 242, 0.08);
      padding: 4px 12px;
      border-radius: 20px;
      line-height: 1.4;
    }

    .badge.secondary {
      color: var(--color-secondary-dark);
      background: rgba(0, 217, 245, 0.10);
    }

    .badge.accent {
      color: var(--color-accent-dark);
      background: rgba(255, 107, 53, 0.10);
    }

    .category-hero-visual {
      flex: 1 1 40%;
      min-height: 200px;
      background: var(--color-bg-alt);
      border-radius: var(--radius-img);
      overflow: hidden;
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-md);
    }

    .category-hero-visual img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      position: absolute;
      inset: 0;
    }

    .category-hero-visual .visual-overlay {
      position: relative;
      z-index: 2;
      background: rgba(15, 27, 51, 0.68);
      border-radius: 12px;
      padding: 20px 24px;
      color: #fff;
      text-align: center;
      backdrop-filter: blur(4px);
    }

    .visual-overlay strong {
      display: block;
      font-size: 18px;
      margin-bottom: 4px;
    }

    .visual-overlay span {
      font-size: 13px;
      color: #D3E4F9;
    }

    /* ===== 筛选排序工具条 ===== */
    .filter-bar {
      background-color: var(--color-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      padding: 16px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      box-shadow: var(--shadow-sm);
    }

    .filter-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .filter-tag {
      font-size: 13px;
      color: var(--color-text-secondary);
      background: var(--color-bg);
      border: 1px solid var(--color-border);
      padding: 6px 14px;
      border-radius: 20px;
      cursor: pointer;
      transition: var(--transition);
      white-space: nowrap;
    }

    .filter-tag:hover {
      border-color: var(--color-primary);
      color: var(--color-primary);
    }

    .filter-tag.active {
      background: var(--color-primary);
      color: #fff;
      border-color: var(--color-primary);
    }

    .sort-options {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--color-text-secondary);
      font-size: 13px;
      white-space: nowrap;
    }

    .sort-btn {
      border: 1px solid var(--color-border);
      background: var(--color-card);
      padding: 6px 12px;
      border-radius: 8px;
      font-size: 13px;
      color: var(--color-text-secondary);
      cursor: pointer;
      transition: var(--transition);
    }

    .sort-btn:hover {
      border-color: var(--color-primary);
      color: var(--color-primary);
    }

    .sort-btn.active {
      background: var(--color-bg-alt);
      border-color: var(--color-primary);
      color: var(--color-primary);
      font-weight: 500;
    }

    /* ===== 词条列表卡片 ===== */
    .entry-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .entry-card {
      background: var(--color-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .entry-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(29, 111, 242, 0.25);
    }

    .entry-card .card-img {
      aspect-ratio: 16/9;
      background: var(--color-bg-alt);
      overflow: hidden;
      position: relative;
    }

    .entry-card .card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.45s ease;
      background: #D9E4F2;
    }

    .entry-card:hover .card-img img {
      transform: scale(1.04);
    }

    .card-body {
      padding: 20px 20px 18px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      flex: 1;
    }

    .card-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 12px;
      color: var(--color-text-secondary);
    }

    .entry-card h3 {
      font-size: 17px;
      line-height: 1.4;
      font-weight: 600;
      color: var(--color-text);
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .entry-card h3 a {
      color: inherit;
      text-decoration: none;
    }

    .entry-card h3 a:hover {
      color: var(--color-primary);
      text-decoration: none;
    }

    .entry-card p {
      font-size: 14px;
      line-height: 1.65;
      color: var(--color-text-secondary);
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
      flex: 1;
    }

    .card-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      font-size: 12px;
      color: var(--color-text-secondary);
      border-top: 1px solid var(--color-border);
      padding-top: 12px;
    }

    /* ===== 专题推荐大卡 ===== */
    .spotlight-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .spotlight-card {
      position: relative;
      background: var(--color-card);
      border-radius: var(--radius-img);
      overflow: hidden;
      min-height: 220px;
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: flex-end;
      transition: var(--transition);
    }

    .spotlight-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    .spotlight-card img {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .spotlight-card .spotlight-overlay {
      position: relative;
      z-index: 2;
      background: linear-gradient(180deg, rgba(15, 27, 51, 0.10) 0%, rgba(15, 27, 51, 0.86) 100%);
      padding: 24px 20px 20px;
      color: #fff;
      width: 100%;
    }

    .spotlight-overlay h3 {
      font-size: 20px;
      font-weight: 600;
      margin-bottom: 8px;
      line-height: 1.3;
    }

    .spotlight-overlay p {
      font-size: 14px;
      color: #DCE6F5;
      margin-bottom: 12px;
      line-height: 1.6;
    }

    .spotlight-overlay a {
      color: #fff;
      font-size: 13px;
      font-weight: 500;
      background: rgba(255, 255, 255, 0.16);
      border: 1px solid rgba(255, 255, 255, 0.25);
      padding: 6px 14px;
      border-radius: 8px;
      display: inline-block;
      text-decoration: none;
      transition: var(--transition);
    }

    .spotlight-overlay a:hover {
      background: rgba(255, 255, 255, 0.25);
      text-decoration: none;
    }

    /* ===== 数据趋势 ===== */
    .data-trend {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .data-trend .data-item {
      background: var(--color-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      padding: 24px 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .data-trend .data-item:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }

    .data-value {
      font-size: 34px;
      font-weight: 700;
      color: var(--color-primary);
      letter-spacing: -0.5px;
      font-variant-numeric: tabular-nums;
      line-height: 1.2;
    }

    .data-unit {
      font-size: 16px;
      font-weight: 600;
      color: var(--color-text);
      margin-left: 2px;
    }

    .data-label {
      font-size: 14px;
      color: var(--color-text-secondary);
      margin-top: 8px;
    }

    /* ===== 百科速查 ===== */
    .quick-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }

    .quick-item {
      background: var(--color-card);
      border: 1px solid var(--color-border);
      border-radius: 12px;
      padding: 16px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .quick-item:hover {
      box-shadow: var(--shadow-md);
      border-color: rgba(29, 111, 242, 0.3);
    }

    .quick-item h4 {
      font-size: 15px;
      font-weight: 600;
      color: var(--color-text);
      margin-bottom: 6px;
      line-height: 1.4;
    }

    .quick-item p {
      font-size: 13px;
      line-height: 1.55;
      color: var(--color-text-secondary);
    }

    /* ===== FAQ ===== */
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--color-card);
      border: 1px solid var(--color-border);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .faq-item:hover {
      box-shadow: var(--shadow-md);
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 20px;
      text-align: left;
      font-size: 16px;
      font-weight: 600;
      color: var(--color-text);
      background: transparent;
      cursor: pointer;
    }

    .faq-question:hover {
      color: var(--color-primary);
    }

    .faq-icon {
      width: 24px;
      height: 24px;
      flex-shrink: 0;
      border-radius: 6px;
      background: var(--color-bg-alt);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      color: var(--color-primary);
      transition: var(--transition);
    }

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      background: var(--color-primary);
      color: #fff;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
    }

    .faq-item.open .faq-answer {
      max-height: 300px;
    }

    .faq-answer p {
      padding: 0 20px 18px 20px;
      font-size: 14px;
      line-height: 1.75;
      color: var(--color-text-secondary);
    }

    /* ===== CTA ===== */
    .cta-box {
      background: var(--color-bg-alt);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      padding: 40px 32px;
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
      box-shadow: var(--shadow-sm);
    }

    .cta-box h2 {
      font-size: 26px;
      margin-bottom: 10px;
      color: var(--color-text);
    }

    .cta-box p {
      font-size: 15px;
      color: var(--color-text-secondary);
      margin-bottom: 22px;
    }

    .cta-form {
      display: flex;
      align-items: center;
      gap: 12px;
      max-width: 520px;
      margin: 0 auto;
    }

    .cta-form input {
      flex: 1;
      padding: 12px 14px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-btn);
      font-size: 14px;
      background: var(--color-card);
      color: var(--color-text);
    }

    .cta-form input:focus {
      border-color: var(--color-primary);
      box-shadow: 0 0 0 3px rgba(29, 111, 242, 0.12);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 10px 22px;
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
      text-decoration: none;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--color-primary);
      color: #fff;
    }

    .btn-primary:hover {
      background: var(--color-primary-dark);
      text-decoration: none;
      color: #fff;
    }

    .btn-accent {
      background: var(--color-accent);
      color: #fff;
    }

    .btn-accent:hover {
      background: var(--color-accent-dark);
      text-decoration: none;
      color: #fff;
    }

    .btn-secondary {
      background: var(--color-card);
      color: var(--color-primary);
      border-color: var(--color-primary);
    }

    .btn-secondary:hover {
      background: rgba(29, 111, 242, 0.08);
      text-decoration: none;
      color: var(--color-primary);
    }

    /* ===== 页脚 ===== */
    .site-footer {
      background: var(--color-footer);
      color: var(--color-footer-text);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
      gap: 32px;
      padding: 48px 0 36px;
    }

    .footer-brand .logo {
      color: #fff;
      margin-bottom: 14px;
    }

    .footer-brand .logo:hover {
      color: var(--color-secondary);
      text-decoration: none;
    }

    .footer-brand p {
      font-size: 14px;
      line-height: 1.7;
      color: var(--color-footer-text);
      max-width: 320px;
    }

    .site-footer h4 {
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 14px;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a,
    .footer-contact a {
      color: var(--color-footer-text);
      font-size: 14px;
      text-decoration: none;
    }

    .footer-links a:hover,
    .footer-contact a:hover {
      color: var(--color-secondary);
      text-decoration: underline;
    }

    .footer-contact {
      display: flex;
      flex-direction: column;
      gap: 8px;
      font-size: 14px;
      color: var(--color-footer-text);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.10);
      padding: 18px 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 13px;
      color: var(--color-footer-text);
    }

    .footer-bottom a {
      color: var(--color-footer-text);
      text-decoration: none;
    }

    .footer-bottom a:hover {
      color: var(--color-secondary);
      text-decoration: underline;
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      .entry-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .spotlight-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .data-trend {
        grid-template-columns: repeat(2, 1fr);
      }
      .quick-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      :root {
        --section-padding-desktop: 56px 0;
      }

      .main-nav {
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        position: absolute;
        top: calc(var(--nav-height) - 10px);
        left: 0;
        right: 0;
        background: #fff;
        border: 1px solid var(--color-border);
        border-radius: 12px;
        box-shadow: var(--shadow-lg);
        padding: 12px 16px;
        z-index: 1000;
      }

      .main-nav.open {
        display: flex;
      }

      .main-nav a {
        padding: 12px 10px;
        border-bottom: 1px solid var(--color-bg-alt);
      }
      .main-nav a:last-child {
        border-bottom: none;
      }
      .main-nav a.active::after {
        display: none;
      }
      .main-nav a.active {
        background: var(--color-bg-alt);
        border-radius: 8px;
      }

      .nav-toggle {
        display: flex;
      }

      .category-hero .container {
        flex-direction: column;
      }
      .category-hero-visual {
        min-height: 180px;
      }

      .filter-bar {
        flex-direction: column;
        align-items: flex-start;
      }

      .entry-grid,
      .spotlight-grid,
      .data-trend,
      .quick-grid {
        grid-template-columns: 1fr;
      }

      .cta-form {
        flex-direction: column;
      }
      .cta-form input {
        width: 100%;
      }
      .cta-form .btn {
        width: 100%;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
      }
    }

    @media (max-width: 520px) {
      .logo {
        font-size: 18px;
      }
      .category-hero h1 {
        font-size: 26px;
      }
      .section-header h2 {
        font-size: 24px;
      }
      .entry-card h3 {
        font-size: 16px;
      }
      .data-value {
        font-size: 28px;
      }
      .spotlight-card {
        min-height: 180px;
      }
      .spotlight-overlay h3 {
        font-size: 18px;
      }
    }

/* roulang page: category3 */
:root {
            --color-primary: #1D6FF2;
            --color-primary-dark: #1759D1;
            --color-secondary: #00D9F5;
            --color-secondary-dark: #00AEC6;
            --color-accent: #FF6B35;
            --color-accent-dark: #E55A2B;
            --color-bg: #F5F8FE;
            --color-bg-alt: #EEF4FD;
            --color-card: #FFFFFF;
            --color-text: #0F1B33;
            --color-text-secondary: #4A5A72;
            --color-border: #E3EAF5;
            --color-success: #2BB673;
            --color-footer: #0F1B33;
            --color-footer-text: #B8C4D9;
            --radius-card: 14px;
            --radius-btn: 9px;
            --radius-img: 16px;
            --shadow-sm: 0 2px 8px rgba(15, 27, 51, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 27, 51, 0.08);
            --shadow-lg: 0 12px 32px rgba(15, 27, 51, 0.14);
            --shadow-hover: 0 4px 12px rgba(15, 27, 51, 0.10), 0 12px 32px rgba(15, 27, 51, 0.14);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            --container-max: 1280px;
            --section-padding-desktop: 56px 0;
            --section-padding-mobile: 40px 0;
            --nav-height: 72px;
            --transition: all 0.25s ease;
        }

        html {
            font-size: 16px;
            -webkit-text-size-adjust: 100%;
            scroll-behavior: smooth;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: var(--color-secondary-dark);
            text-decoration: underline;
        }

        button {
            font-family: var(--font-family);
            cursor: pointer;
            border: none;
            background: none;
            transition: var(--transition);
        }

        button:focus,
        a:focus,
        input:focus {
            outline: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 6px;
        }

        input {
            font-family: var(--font-family);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .section-padding {
            padding: var(--section-padding-desktop);
        }

        .section-bg-white {
            background-color: var(--color-card);
        }

        .section-bg-alt {
            background-color: var(--color-bg-alt);
        }

        .section-bg-default {
            background-color: var(--color-bg);
        }

        .section-divider {
            border-top: 1px solid var(--color-border);
        }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 40px;
        }

        .section-header .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background: rgba(29, 111, 242, 0.08);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-header h2 {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--color-text);
            margin-bottom: 14px;
        }

        .section-header p {
            font-size: 15px;
            line-height: 1.75;
            color: var(--color-text-secondary);
        }

        .section-header.left-align {
            text-align: left;
            margin-left: 0;
            max-width: 100%;
        }

        .section-header.left-align .section-tag {
            margin-left: 0;
        }

        h1,
        h2,
        h3,
        h4 {
            color: var(--color-text);
            font-weight: 600;
            line-height: 1.3;
        }

        h1 {
            font-size: 32px;
            font-weight: 700;
        }

        h2 {
            font-size: 24px;
            font-weight: 700;
        }

        h3 {
            font-size: 17px;
            font-weight: 600;
        }

        h4 {
            font-size: 15px;
            font-weight: 600;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            text-decoration: none;
            letter-spacing: 0.5px;
            white-space: nowrap;
            line-height: 1;
        }

        .logo:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .logo-icon svg {
            width: 18px;
            height: 18px;
            fill: #fff;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            text-decoration: none;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--color-primary);
            text-decoration: none;
            border-bottom-color: var(--color-primary);
        }

        .main-nav a.active {
            color: var(--color-primary);
            border-bottom-color: var(--color-primary);
            font-weight: 600;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 6px;
            background: none;
            border: 1px solid var(--color-border);
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-wrapper {
            background: var(--color-bg);
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-secondary);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-text-secondary);
            text-decoration: none;
        }

        .breadcrumb a:hover {
            color: var(--color-primary);
            text-decoration: underline;
        }

        .breadcrumb .separator {
            color: var(--color-border);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ========== 分类页 Hero 区域 ========== */
        .category-hero {
            background: var(--color-bg);
            padding: 40px 0 32px;
        }

        .category-hero .container {
            display: flex;
            align-items: flex-start;
            gap: 40px;
            flex-wrap: wrap;
        }

        .category-hero-content {
            flex: 1;
            min-width: 300px;
        }

        .category-hero-content h1 {
            font-size: 30px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .category-hero-content .hero-subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            max-width: 720px;
        }

        .category-hero-stats {
            display: flex;
            gap: 32px;
            flex-shrink: 0;
            align-items: center;
        }

        .hero-stat-item {
            text-align: center;
            min-width: 90px;
        }

        .hero-stat-item .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }

        .hero-stat-item .stat-label {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-top: 2px;
        }

        /* ========== 筛选工具条 ========== */
        .filter-toolbar {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            margin-bottom: 32px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
        }

        .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-group-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text-secondary);
            white-space: nowrap;
        }

        .filter-chip {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .filter-chip:hover {
            color: var(--color-primary);
            border-color: var(--color-primary);
            background: rgba(29, 111, 242, 0.06);
        }

        .filter-chip.active {
            color: #fff;
            background: var(--color-primary);
            border-color: var(--color-primary);
        }

        .sort-group {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sort-group label {
            font-size: 13px;
            color: var(--color-text-secondary);
            font-weight: 500;
        }

        .sort-select {
            padding: 7px 14px;
            border-radius: 8px;
            border: 1px solid var(--color-border);
            font-size: 13px;
            font-family: var(--font-family);
            color: var(--color-text);
            background: var(--color-card);
            cursor: pointer;
            transition: var(--transition);
        }

        .sort-select:hover,
        .sort-select:focus {
            border-color: var(--color-primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(29, 111, 242, 0.12);
        }

        /* ========== 选手卡片列表 ========== */
        .player-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }

        .player-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .player-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(29, 111, 242, 0.3);
        }

        .player-card-image {
            position: relative;
            aspect-ratio: 16 / 9;
            background: var(--color-bg-alt);
            overflow: hidden;
        }

        .player-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .player-card:hover .player-card-image img {
            transform: scale(1.04);
        }

        .player-status-badge {
            position: absolute;
            top: 10px;
            right: 10px;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.5px;
            background: rgba(255, 255, 255, 0.95);
            color: var(--color-success);
            border: 1px solid var(--color-success);
        }

        .player-status-badge.retired {
            color: var(--color-text-secondary);
            border-color: var(--color-border);
        }

        .player-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .player-card-top {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 12px;
            margin-bottom: 10px;
        }

        .player-card-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.3;
        }

        .player-card-id {
            font-size: 13px;
            color: var(--color-text-secondary);
            font-family: "SF Mono", "Consolas", monospace;
            letter-spacing: 0.5px;
        }

        .player-card-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 10px;
        }

        .badge {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 14px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(0, 217, 245, 0.1);
            color: #008BA3;
            letter-spacing: 0.3px;
        }

        .badge.primary {
            background: rgba(29, 111, 242, 0.1);
            color: var(--color-primary);
        }

        .badge.accent {
            background: rgba(255, 107, 53, 0.1);
            color: var(--color-accent);
        }

        .player-card-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.65;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .player-card-stats {
            display: flex;
            gap: 16px;
            padding-top: 12px;
            border-top: 1px solid var(--color-border);
            margin-top: auto;
        }

        .player-stat {
            text-align: center;
            flex: 1;
        }

        .player-stat .stat-value {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            font-variant-numeric: tabular-nums;
        }

        .player-stat .stat-key {
            font-size: 11px;
            color: var(--color-text-secondary);
            letter-spacing: 0.3px;
        }

        /* ========== 专题推荐 ========== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .featured-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .featured-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .featured-card-image {
            aspect-ratio: 16 / 9;
            background: var(--color-bg-alt);
            overflow: hidden;
        }

        .featured-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .featured-card:hover .featured-card-image img {
            transform: scale(1.04);
        }

        .featured-card-body {
            padding: 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .featured-card-tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 0.8px;
            margin-bottom: 8px;
        }

        .featured-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--color-text);
        }

        .featured-card-body p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            flex: 1;
        }

        .featured-card-link {
            display: inline-block;
            margin-top: 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            text-decoration: none;
        }

        .featured-card-link:hover {
            color: var(--color-secondary-dark);
            text-decoration: underline;
        }

        /* ========== 数据趋势板块 ========== */
        .trend-panel {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-md);
            padding: 28px 32px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            align-items: center;
        }

        .trend-info h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .trend-info p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        .trend-bars {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .trend-bar-item {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .trend-bar-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text);
            min-width: 70px;
            white-space: nowrap;
        }

        .trend-bar-track {
            flex: 1;
            height: 8px;
            background: var(--color-bg);
            border-radius: 4px;
            overflow: hidden;
        }

        .trend-bar-fill {
            height: 100%;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
            transition: width 0.8s ease;
        }

        .trend-bar-fill.accent {
            background: linear-gradient(90deg, var(--color-accent), #FFB199);
        }

        .trend-bar-value {
            font-size: 13px;
            font-weight: 700;
            color: var(--color-primary);
            min-width: 40px;
            text-align: right;
            font-variant-numeric: tabular-nums;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }

        .faq-item.open {
            border-color: rgba(29, 111, 242, 0.4);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 18px 24px;
            background: none;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.5;
        }

        .faq-question:hover {
            color: var(--color-primary);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-primary);
            font-weight: 600;
            transition: var(--transition);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--color-text-secondary);
        }

        /* ========== CTA 小转化区 ========== */
        .category-cta {
            background: linear-gradient(135deg, rgba(29, 111, 242, 0.06), rgba(0, 217, 245, 0.06));
            border: 1px solid rgba(29, 111, 242, 0.2);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            text-align: center;
        }

        .category-cta h2 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .category-cta p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 20px;
        }

        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            letter-spacing: 0.3px;
            transition: var(--transition);
            border: 2px solid transparent;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            color: #fff;
            text-decoration: none;
            box-shadow: 0 4px 16px rgba(29, 111, 242, 0.3);
        }

        .btn-secondary {
            background: #fff;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }

        .btn-secondary:hover {
            background: rgba(29, 111, 242, 0.06);
            border-color: var(--color-primary);
            color: var(--color-primary);
            text-decoration: none;
        }

        .btn-accent {
            background: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
        }

        .btn-accent:hover {
            background: var(--color-accent-dark);
            border-color: var(--color-accent-dark);
            color: #fff;
            text-decoration: none;
            box-shadow: 0 4px 16px rgba(255, 107, 53, 0.3);
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 15px;
        }

        /* ========== 热门选手榜 ========== */
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 720px;
            margin: 0 auto;
        }

        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: 10px;
            padding: 14px 20px;
            transition: var(--transition);
        }

        .rank-item:hover {
            border-color: rgba(29, 111, 242, 0.3);
            box-shadow: var(--shadow-sm);
        }

        .rank-number {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 15px;
            color: #fff;
            background: var(--color-primary);
            font-variant-numeric: tabular-nums;
        }

        .rank-item:nth-child(1) .rank-number {
            background: var(--color-accent);
        }

        .rank-item:nth-child(2) .rank-number {
            background: #FF9F66;
        }

        .rank-item:nth-child(3) .rank-number {
            background: #FFC53D;
        }

        .rank-info {
            flex: 1;
        }

        .rank-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
        }

        .rank-team {
            font-size: 12px;
            color: var(--color-text-secondary);
        }

        .rank-score {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            font-variant-numeric: tabular-nums;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--color-footer);
            color: var(--color-footer-text);
            padding: 48px 0 24px;
        }

        .site-footer a {
            color: var(--color-footer-text);
            text-decoration: none;
            transition: var(--transition);
        }

        .site-footer a:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand .logo:hover {
            color: var(--color-secondary);
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: var(--color-footer-text);
        }

        .footer-grid h4 {
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            font-size: 13px;
            line-height: 1.6;
        }

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-contact a {
            font-size: 13px;
        }

        .footer-contact span {
            font-size: 12px;
            color: rgba(184, 196, 217, 0.7);
        }

        .footer-bottom {
            border-top: 1px solid rgba(184, 196, 217, 0.15);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 12px;
        }

        .footer-bottom a {
            color: var(--color-secondary);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 992px) {
            .main-nav {
                gap: 20px;
            }

            .main-nav a {
                font-size: 13px;
            }

            .category-hero .container {
                flex-direction: column;
                gap: 20px;
            }

            .category-hero-stats {
                gap: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-padding-desktop: 40px 0;
                --nav-height: 64px;
            }

            .nav-toggle {
                display: flex;
            }

            .main-nav {
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                gap: 0;
                padding: 12px 24px 20px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-md);
                display: none;
                align-items: flex-start;
            }

            .main-nav.open {
                display: flex;
            }

            .main-nav a {
                padding: 12px 0;
                font-size: 15px;
                border-bottom: none;
                width: 100%;
                border-bottom: 1px solid var(--color-bg);
            }

            .main-nav a:last-child {
                border-bottom: none;
            }

            .main-nav a.active {
                border-bottom: none;
                color: var(--color-primary);
                font-weight: 600;
                background: rgba(29, 111, 242, 0.04);
                border-radius: 6px;
                padding: 12px 16px;
            }

            .player-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .featured-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .trend-panel {
                grid-template-columns: 1fr;
                padding: 20px;
                gap: 20px;
            }

            .filter-toolbar {
                flex-direction: column;
                align-items: stretch;
                padding: 14px 16px;
            }

            .sort-group {
                margin-left: 0;
                justify-content: space-between;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .category-hero {
                padding: 28px 0 20px;
            }

            .category-hero-content h1 {
                font-size: 24px;
            }

            .hero-stat-item .stat-number {
                font-size: 24px;
            }

            .section-header h2 {
                font-size: 22px;
            }

            .category-cta {
                padding: 28px 20px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .category-hero-stats {
                flex-wrap: wrap;
                gap: 16px;
            }

            .hero-stat-item {
                min-width: 70px;
            }

            .player-card-body {
                padding: 14px 16px 16px;
            }

            .player-card-stats {
                gap: 10px;
            }

            .featured-card-body {
                padding: 16px 18px;
            }

            .rank-item {
                padding: 10px 14px;
                gap: 10px;
            }

            .rank-number {
                width: 26px;
                height: 26px;
                font-size: 13px;
            }

            .btn {
                padding: 10px 20px;
                font-size: 13px;
            }

            .btn-lg {
                padding: 12px 24px;
                font-size: 14px;
                width: 100%;
                text-align: center;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #1D6FF2;
            --color-primary-dark: #1759D1;
            --color-secondary: #00D9F5;
            --color-secondary-dark: #00AEC6;
            --color-accent: #FF6B35;
            --color-accent-dark: #E55A2B;
            --color-bg: #F5F8FE;
            --color-bg-alt: #EEF4FD;
            --color-card: #FFFFFF;
            --color-text: #0F1B33;
            --color-text-secondary: #4A5A72;
            --color-border: #E3EAF5;
            --color-success: #2BB673;
            --color-footer: #0F1B33;
            --color-footer-text: #B8C4D9;
            --radius-card: 14px;
            --radius-btn: 9px;
            --radius-img: 16px;
            --shadow-sm: 0 2px 8px rgba(15, 27, 51, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 27, 51, 0.08);
            --shadow-lg: 0 12px 32px rgba(15, 27, 51, 0.14);
            --shadow-hover: 0 4px 12px rgba(15, 27, 51, 0.10), 0 12px 32px rgba(15, 27, 51, 0.14);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            --container-max: 1280px;
            --section-padding-desktop: 56px 0;
            --section-padding-mobile: 40px 0;
            --nav-height: 72px;
            --transition: all 0.25s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            font-size: 16px;
            -webkit-text-size-adjust: 100%;
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: var(--color-secondary-dark);
            text-decoration: underline;
        }

        button {
            font-family: var(--font-family);
            cursor: pointer;
            border: none;
            background: none;
            transition: var(--transition);
        }

        button:focus,
        a:focus,
        input:focus {
            outline: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 6px;
        }

        input {
            font-family: var(--font-family);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .section-padding {
            padding: var(--section-padding-desktop);
        }

        .section-bg-white {
            background-color: var(--color-card);
        }

        .section-bg-alt {
            background-color: var(--color-bg-alt);
        }

        .section-bg-default {
            background-color: var(--color-bg);
        }

        .section-divider {
            border-top: 1px solid var(--color-border);
        }

        .section-header {
            max-width: 720px;
            margin: 0 0 36px;
        }

        .section-header.center {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }

        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background: rgba(29, 111, 242, 0.08);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .section-header h2 {
            font-size: 26px;
            line-height: 1.25;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }

        .section-header p {
            font-size: 15px;
            line-height: 1.75;
            color: var(--color-text-secondary);
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            text-decoration: none;
            letter-spacing: 0.5px;
            white-space: nowrap;
            line-height: 1;
        }

        .logo:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .logo-icon svg {
            width: 18px;
            height: 18px;
            fill: #fff;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            text-decoration: none;
            padding: 6px 0;
            position: relative;
            letter-spacing: 0.3px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--color-primary);
            border-radius: 2px;
            transition: var(--transition);
        }

        .main-nav a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .main-nav a:hover::after {
            width: 100%;
        }

        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .main-nav a.active::after {
            width: 100%;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--color-text);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ========== 面包屑 ========== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-text-secondary);
            text-decoration: none;
            transition: var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .breadcrumb .separator {
            color: var(--color-border);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ========== 分类小 Hero ========== */
        .category-hero {
            padding: 40px 0 36px;
            background-color: var(--color-bg);
            border-bottom: 1px solid var(--color-border);
        }

        .category-hero .container {
            display: grid;
            grid-template-columns: 1fr 380px;
            gap: 48px;
            align-items: center;
        }

        .category-hero-info {
            max-width: 680px;
        }

        .category-hero-info h1 {
            font-size: 30px;
            line-height: 1.2;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .category-hero-info h1 .highlight {
            color: var(--color-primary);
        }

        .category-hero-desc {
            font-size: 15px;
            line-height: 1.8;
            color: var(--color-text-secondary);
            margin-bottom: 16px;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .hero-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 20px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            transition: var(--transition);
        }

        .hero-tag:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        .category-hero-visual {
            border-radius: var(--radius-img);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .category-hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        /* ========== 筛选工具条 ========== */
        .filter-bar {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            padding: 16px 20px;
            margin-bottom: 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            box-shadow: var(--shadow-sm);
        }

        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }

        .filter-tag {
            font-size: 13px;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 20px;
            background: var(--color-bg-alt);
            color: var(--color-text-secondary);
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .filter-tag:hover {
            background: rgba(29, 111, 242, 0.08);
            color: var(--color-primary);
            border-color: rgba(29, 111, 242, 0.2);
        }

        .filter-tag.active {
            background: rgba(29, 111, 242, 0.12);
            color: var(--color-primary);
            border-color: rgba(29, 111, 242, 0.3);
            font-weight: 600;
        }

        .sort-buttons {
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .sort-btn {
            font-size: 13px;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 8px;
            background: var(--color-card);
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
            cursor: pointer;
            transition: var(--transition);
        }

        .sort-btn:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        .sort-btn.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        /* ========== 评测卡片网格 ========== */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .review-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(29, 111, 242, 0.25);
        }

        .review-card-image {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--color-bg-alt);
            position: relative;
        }

        .review-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .review-card:hover .review-card-image img {
            transform: scale(1.03);
        }

        .review-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            font-size: 11px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 16px;
            background: rgba(255, 255, 255, 0.95);
            color: var(--color-primary);
            box-shadow: var(--shadow-sm);
            letter-spacing: 0.3px;
        }

        .review-card-badge.hot {
            background: var(--color-accent);
            color: #fff;
        }

        .review-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .review-card-title {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.45;
            color: var(--color-text);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .review-card-title a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        .review-card-title a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .review-card-summary {
            font-size: 13px;
            line-height: 1.7;
            color: var(--color-text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
            flex: 1;
        }

        .review-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--color-text-secondary);
            border-top: 1px solid var(--color-border);
            padding-top: 12px;
        }

        .review-card-meta .date {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .review-card-meta .tag {
            font-size: 11px;
            font-weight: 500;
            padding: 2px 8px;
            border-radius: 12px;
            background: var(--color-bg-alt);
            color: var(--color-text-secondary);
        }

        .view-more-wrapper {
            text-align: center;
            margin-top: 32px;
        }

        .btn {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            text-decoration: none;
            transition: var(--transition);
            letter-spacing: 0.3px;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            color: #fff;
            text-decoration: none;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .btn-outline {
            background: var(--color-card);
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn-outline:hover {
            background: #E8F1FF;
            color: var(--color-primary-dark);
            text-decoration: none;
            border-color: var(--color-primary-dark);
        }

        .btn-accent {
            background: var(--color-accent);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }

        .btn-accent:hover {
            background: var(--color-accent-dark);
            color: #fff;
            text-decoration: none;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        /* ========== 专题推荐 ========== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .featured-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .featured-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(29, 111, 242, 0.25);
        }

        .featured-card-image {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--color-bg-alt);
        }

        .featured-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .featured-card:hover .featured-card-image img {
            transform: scale(1.03);
        }

        .featured-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .featured-card-label {
            font-size: 11px;
            font-weight: 600;
            color: var(--color-accent);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 6px;
        }

        .featured-card-title {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.45;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .featured-card-title a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        .featured-card-title a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .featured-card-summary {
            font-size: 13px;
            line-height: 1.7;
            color: var(--color-text-secondary);
            flex: 1;
        }

        /* ========== 数据趋势 ========== */
        .trend-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .trend-item {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 22px 20px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .trend-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .trend-item-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 14px;
        }

        .trend-item-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
        }

        .trend-item-value {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-primary);
            font-feature-settings: tabular-nums;
        }

        .trend-bar {
            height: 6px;
            background: var(--color-bg-alt);
            border-radius: 4px;
            overflow: hidden;
            margin-top: 10px;
        }

        .trend-bar-fill {
            height: 100%;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
            transition: var(--transition);
        }

        .trend-item-desc {
            font-size: 12px;
            color: var(--color-text-secondary);
            margin-top: 8px;
            line-height: 1.6;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(29, 111, 242, 0.2);
        }

        .faq-question {
            width: 100%;
            padding: 18px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            background: none;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.5;
        }

        .faq-question:hover {
            color: var(--color-primary);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            color: var(--color-primary);
            transition: var(--transition);
        }

        .faq-item.open .faq-icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-text-secondary);
        }

        /* ========== CTA 订阅 ========== */
        .cta-section {
            background-color: var(--color-bg-alt);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(29, 111, 242, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -60px;
            width: 180px;
            height: 180px;
            background: rgba(0, 217, 245, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-content {
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .cta-content p {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-bottom: 24px;
            line-height: 1.75;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            max-width: 480px;
            margin: 0 auto;
        }

        .cta-form input {
            flex: 1;
            padding: 12px 18px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--color-border);
            font-size: 14px;
            background: var(--color-card);
            color: var(--color-text);
            transition: var(--transition);
        }

        .cta-form input::placeholder {
            color: #8A9AB5;
        }

        .cta-form input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(29, 111, 242, 0.12);
            outline: none;
        }

        .cta-form .btn {
            flex-shrink: 0;
            padding: 12px 28px;
        }

        /* ========== 本周热榜 ========== */
        .hot-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .hot-item {
            background: var(--color-card);
            border-radius: 12px;
            padding: 18px 16px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            gap: 6px;
            transition: var(--transition);
        }

        .hot-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(255, 107, 53, 0.3);
        }

        .hot-rank {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-accent);
            font-feature-settings: tabular-nums;
            line-height: 1;
        }

        .hot-item-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.45;
        }

        .hot-item-title a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        .hot-item-title a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .hot-item-meta {
            font-size: 12px;
            color: var(--color-text-secondary);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background-color: var(--color-footer);
            color: var(--color-footer-text);
            padding: 56px 0 24px;
            margin-top: 0;
        }

        .site-footer .container {
            max-width: var(--container-max);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand .logo:hover {
            color: var(--color-secondary);
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.75;
            color: var(--color-footer-text);
            max-width: 300px;
        }

        .site-footer h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            font-size: 13px;
            color: var(--color-footer-text);
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--color-secondary);
            text-decoration: none;
        }

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 13px;
            color: var(--color-footer-text);
        }

        .footer-contact a {
            color: var(--color-secondary);
            text-decoration: none;
            transition: var(--transition);
            word-break: break-all;
        }

        .footer-contact a:hover {
            color: #fff;
            text-decoration: underline;
        }

        .footer-bottom {
            border-top: 1px solid rgba(184, 196, 217, 0.2);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: var(--color-footer-text);
        }

        .footer-bottom a {
            color: var(--color-footer-text);
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-bottom a:hover {
            color: var(--color-secondary);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 992px) {
            .main-nav {
                gap: 20px;
            }

            .category-hero .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .category-hero-visual {
                max-width: 480px;
            }

            .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .trend-list {
                grid-template-columns: repeat(2, 1fr);
            }

            .hot-list {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }

            .main-nav {
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                gap: 4px;
                padding: 16px 24px 20px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-md);
                display: none;
                align-items: flex-start;
            }

            .main-nav.open {
                display: flex;
            }

            .main-nav a {
                width: 100%;
                padding: 12px 0;
                font-size: 15px;
                border-bottom: 1px solid var(--color-bg-alt);
            }

            .main-nav a:last-child {
                border-bottom: none;
            }

            .main-nav a::after {
                display: none;
            }

            .main-nav a.active {
                background: rgba(29, 111, 242, 0.06);
                border-radius: 8px;
                padding-left: 12px;
                padding-right: 12px;
            }

            .category-hero {
                padding: 28px 0 24px;
            }

            .category-hero-info h1 {
                font-size: 24px;
            }

            .category-hero-visual {
                max-width: 100%;
            }

            .section-padding {
                padding: var(--section-padding-mobile);
            }

            .section-header h2 {
                font-size: 22px;
            }

            .reviews-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .featured-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .trend-list {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .hot-list {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
                padding: 14px 16px;
            }

            .cta-section {
                padding: 36px 20px;
            }

            .cta-form {
                flex-direction: column;
            }

            .cta-form .btn {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .category-hero-info h1 {
                font-size: 21px;
            }

            .hero-tags {
                gap: 6px;
            }

            .hero-tag {
                font-size: 11px;
                padding: 3px 10px;
            }

            .hot-list {
                grid-template-columns: 1fr;
            }

            .sort-buttons {
                width: 100%;
                gap: 6px;
            }

            .sort-btn {
                flex: 1;
                text-align: center;
                padding: 8px 10px;
                font-size: 12px;
            }

            .filter-tag {
                font-size: 12px;
                padding: 5px 12px;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #1D6FF2;
            --color-primary-dark: #1759D1;
            --color-secondary: #00D9F5;
            --color-secondary-dark: #00AEC6;
            --color-accent: #FF6B35;
            --color-accent-dark: #E55A2B;
            --color-bg: #F5F8FE;
            --color-bg-alt: #EEF4FD;
            --color-card: #FFFFFF;
            --color-text: #0F1B33;
            --color-text-secondary: #4A5A72;
            --color-border: #E3EAF5;
            --color-success: #2BB673;
            --color-footer: #0F1B33;
            --color-footer-text: #B8C4D9;
            --radius-card: 14px;
            --radius-btn: 9px;
            --radius-img: 16px;
            --shadow-sm: 0 2px 8px rgba(15, 27, 51, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 27, 51, 0.08);
            --shadow-lg: 0 12px 32px rgba(15, 27, 51, 0.14);
            --shadow-hover: 0 4px 12px rgba(15, 27, 51, 0.10), 0 12px 32px rgba(15, 27, 51, 0.14);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            --container-max: 1280px;
            --section-padding-desktop: 56px 0;
            --section-padding-mobile: 48px 0;
            --nav-height: 72px;
            --transition: all 0.25s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            font-size: 16px;
            -webkit-text-size-adjust: 100%;
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: var(--color-secondary-dark);
            text-decoration: underline;
        }

        button {
            font-family: var(--font-family);
            cursor: pointer;
            border: none;
            background: none;
            transition: var(--transition);
        }

        button:focus,
        a:focus,
        input:focus,
        select:focus {
            outline: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 3px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 6px;
        }

        input,
        select {
            font-family: var(--font-family);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .section-padding {
            padding: var(--section-padding-desktop);
        }

        .section-bg-white {
            background-color: var(--color-card);
        }
        .section-bg-alt {
            background-color: var(--color-bg-alt);
        }
        .section-bg-default {
            background-color: var(--color-bg);
        }
        .section-divider {
            border-top: 1px solid var(--color-border);
        }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 36px;
        }
        .section-header .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background: rgba(29, 111, 242, 0.08);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section-header h2 {
            font-size: 26px;
            line-height: 1.25;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 15px;
            line-height: 1.75;
            color: var(--color-text-secondary);
        }
        .section-header.left-align {
            text-align: left;
            margin-left: 0;
            max-width: 100%;
        }
        .section-header.left-align .section-tag {
            margin-left: 0;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            text-decoration: none;
            letter-spacing: 0.5px;
            white-space: nowrap;
            line-height: 1;
        }
        .logo:hover {
            color: var(--color-primary);
            text-decoration: none;
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .logo-icon svg {
            width: 18px;
            height: 18px;
            fill: #fff;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 6px 2px;
            border-bottom: 2px solid transparent;
            white-space: nowrap;
            transition: var(--transition);
        }
        .main-nav a:hover {
            color: var(--color-primary);
            text-decoration: none;
            border-bottom-color: var(--color-secondary);
        }
        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
            border-bottom-color: var(--color-primary);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 6px;
            background: none;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-bar {
            background-color: var(--color-bg);
            padding: 14px 0;
            border-bottom: 1px solid var(--color-border);
            font-size: 13px;
            color: var(--color-text-secondary);
        }
        .breadcrumb-bar .container {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb-bar a {
            color: var(--color-primary);
            font-weight: 500;
        }
        .breadcrumb-bar a:hover {
            color: var(--color-secondary-dark);
        }
        .breadcrumb-bar .separator {
            color: var(--color-text-secondary);
            opacity: 0.6;
        }
        .breadcrumb-bar .current {
            color: var(--color-text);
            font-weight: 600;
        }

        /* ========== 分类 Hero ========== */
        .category-hero {
            background: linear-gradient(135deg, #F5F8FE 0%, #EEF4FD 55%, #E8F1FF 100%);
            padding: 40px 0 44px;
            border-bottom: 1px solid var(--color-border);
        }
        .category-hero .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .category-hero-content h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-text);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .category-hero-content .hero-desc {
            font-size: 15px;
            line-height: 1.75;
            color: var(--color-text-secondary);
            margin-bottom: 18px;
            max-width: 560px;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .hero-tags .badge-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(29, 111, 242, 0.08);
            color: var(--color-primary);
            border: 1px solid rgba(29, 111, 242, 0.15);
        }
        .hero-tags .badge-tag.hot {
            background: rgba(255, 107, 53, 0.1);
            color: var(--color-accent);
            border-color: rgba(255, 107, 53, 0.2);
        }
        .category-hero-visual {
            background: var(--color-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-md);
            padding: 24px 28px;
            border: 1px solid var(--color-border);
        }
        .hero-visual-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-secondary);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .hero-metric-row {
            display: flex;
            gap: 18px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }
        .hero-metric {
            flex: 1;
            min-width: 110px;
            background: var(--color-bg-alt);
            border-radius: 10px;
            padding: 14px 16px;
        }
        .hero-metric .metric-num {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }
        .hero-metric .metric-label {
            font-size: 12px;
            color: var(--color-text-secondary);
            margin-top: 4px;
        }
        .hero-mini-note {
            font-size: 12px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            padding-top: 10px;
            border-top: 1px solid var(--color-border);
        }

        /* ========== 筛选工具条 ========== */
        .filter-bar {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }
        .filter-tabs {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-tab {
            padding: 7px 18px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            transition: var(--transition);
        }
        .filter-tab:hover {
            color: var(--color-primary);
            border-color: var(--color-primary);
            background: rgba(29, 111, 242, 0.05);
        }
        .filter-tab.active {
            color: #fff;
            background: var(--color-primary);
            border-color: var(--color-primary);
            font-weight: 600;
        }
        .sort-select {
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--color-border);
            background: var(--color-card);
            font-size: 13px;
            color: var(--color-text);
            cursor: pointer;
            min-width: 130px;
            transition: var(--transition);
        }
        .sort-select:hover {
            border-color: var(--color-primary);
        }
        .sort-select:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(29, 111, 242, 0.12);
        }

        /* ========== 榜单列表 ========== */
        .rank-list-section {
            background: var(--color-bg);
        }
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .rank-card {
            display: flex;
            align-items: center;
            gap: 18px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 16px 22px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            text-decoration: none;
            color: var(--color-text);
        }
        .rank-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(29, 111, 242, 0.3);
            text-decoration: none;
            color: var(--color-text);
        }
        .rank-num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            font-size: 18px;
            font-weight: 700;
            font-variant-numeric: tabular-nums;
            background: var(--color-bg-alt);
            color: var(--color-text-secondary);
        }
        .rank-num.top-1 {
            background: rgba(255, 107, 53, 0.12);
            color: var(--color-accent);
        }
        .rank-num.top-2 {
            background: rgba(29, 111, 242, 0.1);
            color: var(--color-primary);
        }
        .rank-num.top-3 {
            background: rgba(0, 217, 245, 0.12);
            color: var(--color-secondary-dark);
        }
        .rank-card-body {
            flex: 1;
            min-width: 0;
        }
        .rank-card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .rank-card-meta {
            font-size: 13px;
            color: var(--color-text-secondary);
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .rank-card-stat {
            flex-shrink: 0;
            text-align: right;
        }
        .rank-stat-main {
            font-size: 20px;
            font-weight: 700;
            font-variant-numeric: tabular-nums;
            color: var(--color-primary);
            line-height: 1.2;
        }
        .rank-stat-label {
            font-size: 12px;
            color: var(--color-text-secondary);
        }
        .rank-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            padding: 2px 8px;
            border-radius: 12px;
            margin-left: 8px;
        }
        .rank-trend.up {
            background: rgba(43, 182, 115, 0.1);
            color: var(--color-success);
        }
        .rank-trend.down {
            background: rgba(255, 107, 53, 0.1);
            color: var(--color-accent);
        }
        .rank-trend.stable {
            background: var(--color-bg-alt);
            color: var(--color-text-secondary);
        }

        /* ========== 专题推荐 ========== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }
        .feature-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            text-decoration: none;
            color: var(--color-text);
            display: flex;
            flex-direction: column;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            text-decoration: none;
            color: var(--color-text);
        }
        .feature-card img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            background: var(--color-bg-alt);
        }
        .feature-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .feature-badge {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(255, 107, 53, 0.08);
            padding: 3px 10px;
            border-radius: 12px;
            margin-bottom: 8px;
            align-self: flex-start;
        }
        .feature-card h3 {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            flex: 1;
        }

        /* ========== 数据趋势 ========== */
        .trend-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: start;
        }
        .trend-panel {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px 26px;
            box-shadow: var(--shadow-sm);
        }
        .trend-panel h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--color-text);
        }
        .bar-chart {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .bar-chart-item {
            display: grid;
            grid-template-columns: 70px 1fr 40px;
            align-items: center;
            gap: 12px;
            font-size: 13px;
        }
        .bar-chart-label {
            color: var(--color-text-secondary);
            font-weight: 500;
            text-align: right;
        }
        .bar-chart-track {
            height: 10px;
            background: var(--color-bg-alt);
            border-radius: 6px;
            overflow: hidden;
        }
        .bar-chart-fill {
            height: 100%;
            border-radius: 6px;
            background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
            transition: width 0.8s ease;
        }
        .bar-chart-fill.accent {
            background: linear-gradient(90deg, var(--color-accent) 0%, #FF9A6B 100%);
        }
        .bar-chart-val {
            font-weight: 700;
            font-variant-numeric: tabular-nums;
            color: var(--color-text);
        }
        .trend-note {
            font-size: 12px;
            color: var(--color-text-secondary);
            margin-top: 16px;
            padding-top: 12px;
            border-top: 1px solid var(--color-border);
            line-height: 1.6;
        }

        /* ========== 本周热榜 ========== */
        .hot-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .hot-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            padding: 14px 18px;
            transition: var(--transition);
            text-decoration: none;
            color: var(--color-text);
        }
        .hot-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            text-decoration: none;
            color: var(--color-text);
        }
        .hot-item-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(29, 111, 242, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-weight: 700;
            font-size: 14px;
            color: var(--color-primary);
        }
        .hot-item-body {
            flex: 1;
            min-width: 0;
        }
        .hot-item-title {
            font-size: 14px;
            font-weight: 600;
            line-height: 1.4;
        }
        .hot-item-sub {
            font-size: 12px;
            color: var(--color-text-secondary);
            margin-top: 2px;
        }
        .hot-item-value {
            font-weight: 700;
            font-size: 16px;
            font-variant-numeric: tabular-nums;
            color: var(--color-primary);
            flex-shrink: 0;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(29, 111, 242, 0.2);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            line-height: 1.5;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--color-bg-alt);
            color: var(--color-text-secondary);
            font-size: 16px;
            font-weight: 500;
            transition: var(--transition);
        }
        .faq-item.open .faq-question .faq-icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }
        .faq-answer p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-secondary);
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, rgba(29, 111, 242, 0.04) 0%, rgba(0, 217, 245, 0.05) 100%);
        }
        .cta-box {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 36px 40px;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .cta-box h2 {
            font-size: 22px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-text);
            margin-bottom: 6px;
        }
        .cta-box p {
            font-size: 14px;
            color: var(--color-text-secondary);
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: var(--radius-btn);
            background: var(--color-accent);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            text-decoration: none;
            white-space: nowrap;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.3);
        }
        .cta-btn:hover {
            background: var(--color-accent-dark);
            color: #fff;
            text-decoration: none;
            box-shadow: 0 6px 18px rgba(255, 107, 53, 0.35);
            transform: translateY(-1px);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--color-footer);
            color: var(--color-footer-text);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand .logo:hover {
            color: var(--color-secondary);
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: var(--color-footer-text);
        }
        .site-footer h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            color: var(--color-footer-text);
            font-size: 13px;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--color-secondary);
            text-decoration: none;
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 13px;
        }
        .footer-contact a {
            color: var(--color-secondary);
            text-decoration: none;
            word-break: break-all;
        }
        .footer-contact a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 12px;
            color: var(--color-footer-text);
        }
        .footer-bottom a {
            color: var(--color-footer-text);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--color-secondary);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 992px) {
            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                padding: 12px 24px 20px;
                box-shadow: var(--shadow-md);
                border-bottom: 1px solid var(--color-border);
                display: none;
                z-index: 999;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                width: 100%;
                padding: 12px 4px;
                border-bottom: 1px solid var(--color-border);
                font-size: 15px;
            }
            .main-nav a:last-child {
                border-bottom: none;
            }
            .main-nav a.active {
                border-bottom-color: var(--color-primary);
            }
            .nav-toggle {
                display: flex;
            }
            .category-hero .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .trend-wrapper {
                grid-template-columns: 1fr;
            }
            .hot-list {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 767px) {
            :root {
                --section-padding-desktop: var(--section-padding-mobile);
            }
            .container {
                padding: 0 16px;
            }
            .category-hero {
                padding: 28px 0 32px;
            }
            .category-hero-content h1 {
                font-size: 26px;
            }
            .hero-metric-row {
                gap: 10px;
            }
            .hero-metric {
                min-width: 80px;
                padding: 10px 12px;
            }
            .hero-metric .metric-num {
                font-size: 20px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .rank-card {
                flex-wrap: wrap;
                gap: 12px;
                padding: 14px 16px;
            }
            .rank-num {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }
            .rank-card-stat {
                text-align: left;
                width: 100%;
                padding-left: 54px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .cta-box {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
                padding: 28px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

        @media (max-width: 520px) {
            .category-hero-content h1 {
                font-size: 22px;
            }
            .hero-tags .badge-tag {
                font-size: 11px;
                padding: 3px 10px;
            }
            .trend-panel {
                padding: 18px 16px;
            }
            .bar-chart-item {
                grid-template-columns: 56px 1fr 36px;
                gap: 8px;
                font-size: 12px;
            }
            .rank-card-title {
                font-size: 14px;
            }
            .cta-btn {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category6 */
:root {
            --color-primary: #1D6FF2;
            --color-primary-dark: #1759D1;
            --color-secondary: #00D9F5;
            --color-secondary-dark: #00AEC6;
            --color-accent: #FF6B35;
            --color-accent-dark: #E55A2B;
            --color-bg: #F5F8FE;
            --color-bg-alt: #EEF4FD;
            --color-card: #FFFFFF;
            --color-text: #0F1B33;
            --color-text-secondary: #4A5A72;
            --color-border: #E3EAF5;
            --color-success: #2BB673;
            --color-footer: #0F1B33;
            --color-footer-text: #B8C4D9;
            --radius-card: 14px;
            --radius-btn: 9px;
            --radius-img: 16px;
            --shadow-sm: 0 2px 8px rgba(15, 27, 51, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 27, 51, 0.08);
            --shadow-lg: 0 12px 32px rgba(15, 27, 51, 0.14);
            --shadow-hover: 0 4px 12px rgba(15, 27, 51, 0.10), 0 12px 32px rgba(15, 27, 51, 0.14);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            --container-max: 1280px;
            --section-padding-desktop: 56px 0;
            --section-padding-mobile: 40px 0;
            --nav-height: 72px;
            --transition: all 0.25s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            font-size: 16px;
            -webkit-text-size-adjust: 100%;
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: var(--color-secondary-dark);
            text-decoration: underline;
        }

        button {
            font-family: var(--font-family);
            cursor: pointer;
            border: none;
            background: none;
            transition: var(--transition);
        }

        button:focus,
        a:focus,
        input:focus {
            outline: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 6px;
        }

        input {
            font-family: var(--font-family);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .section-padding {
            padding: var(--section-padding-desktop);
        }

        .section-bg-white {
            background-color: var(--color-card);
        }

        .section-bg-alt {
            background-color: var(--color-bg-alt);
        }

        .section-bg-default {
            background-color: var(--color-bg);
        }

        .section-divider {
            border-top: 1px solid var(--color-border);
        }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 36px;
        }

        .section-header .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background: rgba(29, 111, 242, 0.08);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-header h2 {
            margin-bottom: 12px;
            font-size: 26px;
            font-weight: 700;
            line-height: 1.25;
        }

        .section-header p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--color-text-secondary);
        }

        .section-header.left-align {
            text-align: left;
            margin-left: 0;
            max-width: 100%;
        }

        .section-header.left-align .section-tag {
            margin-left: 0;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            text-decoration: none;
            letter-spacing: 0.5px;
            white-space: nowrap;
            line-height: 1;
        }

        .logo:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .logo-icon svg {
            width: 18px;
            height: 18px;
            fill: #fff;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            text-decoration: none;
            padding: 4px 0;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
            border-bottom-color: var(--color-primary);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 32px;
            height: 32px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            padding: 4px;
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--color-text);
            border-radius: 2px;
            transition: var(--transition);
        }

        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ========== 面包屑 ========== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-text-secondary);
            text-decoration: none;
        }

        .breadcrumb a:hover {
            color: var(--color-primary);
            text-decoration: underline;
        }

        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 600;
        }

        .breadcrumb .sep {
            color: var(--color-border);
        }

        /* ========== 分类 Hero ========== */
        .category-hero {
            background-color: var(--color-bg-alt);
            padding: 40px 0 32px;
            border-bottom: 1px solid var(--color-border);
        }

        .category-hero .container {
            display: grid;
            grid-template-columns: 1fr 360px;
            gap: 40px;
            align-items: center;
        }

        .category-hero h1 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 12px;
            color: var(--color-text);
        }

        .category-hero .hero-desc {
            font-size: 15px;
            line-height: 1.8;
            color: var(--color-text-secondary);
            max-width: 560px;
        }

        .category-hero .hero-visual {
            border-radius: var(--radius-img);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            aspect-ratio: 4/3;
        }

        .category-hero .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ========== 筛选工具条 ========== */
        .filter-toolbar {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 28px;
            box-shadow: var(--shadow-sm);
        }

        .filter-tags {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .filter-tag {
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            border-radius: 20px;
            background-color: var(--color-bg);
            color: var(--color-text-secondary);
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .filter-tag:hover {
            background-color: var(--color-bg-alt);
            color: var(--color-primary);
        }

        .filter-tag.active {
            background-color: rgba(29, 111, 242, 0.1);
            color: var(--color-primary);
            font-weight: 600;
            border-color: rgba(29, 111, 242, 0.3);
        }

        .sort-btns {
            display: flex;
            gap: 8px;
        }

        .sort-btn {
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 500;
            border-radius: 8px;
            color: var(--color-text-secondary);
            background: transparent;
            border: 1px solid var(--color-border);
            cursor: pointer;
            transition: var(--transition);
        }

        .sort-btn:hover {
            color: var(--color-primary);
            border-color: var(--color-primary);
        }

        .sort-btn.active {
            color: var(--color-primary);
            border-color: var(--color-primary);
            background-color: rgba(29, 111, 242, 0.06);
            font-weight: 600;
        }

        /* ========== 百科列表 ========== */
        .wiki-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .wiki-card {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .wiki-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(29, 111, 242, 0.25);
        }

        .wiki-card .card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: var(--color-bg-alt);
        }

        .wiki-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .wiki-card:hover .card-img img {
            transform: scale(1.03);
        }

        .wiki-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .wiki-card .card-badges {
            display: flex;
            gap: 8px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }

        .badge {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 14px;
            letter-spacing: 0.3px;
        }

        .badge-blue {
            background-color: rgba(29, 111, 242, 0.1);
            color: var(--color-primary);
        }

        .badge-cyan {
            background-color: rgba(0, 217, 245, 0.12);
            color: var(--color-secondary-dark);
        }

        .badge-orange {
            background-color: rgba(255, 107, 53, 0.12);
            color: var(--color-accent);
        }

        .badge-green {
            background-color: rgba(43, 182, 115, 0.12);
            color: var(--color-success);
        }

        .wiki-card .card-title {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 8px;
            color: var(--color-text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .wiki-card .card-title a {
            color: var(--color-text);
            text-decoration: none;
        }

        .wiki-card .card-title a:hover {
            color: var(--color-primary);
        }

        .wiki-card .card-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .wiki-card .card-meta {
            font-size: 12px;
            color: var(--color-text-secondary);
            margin-top: 12px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .wiki-card .card-meta .read-time {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ========== 专题推荐 ========== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(29, 111, 242, 0.25);
        }

        .feature-card .feature-img {
            aspect-ratio: 16/10;
            overflow: hidden;
            background-color: var(--color-bg-alt);
        }

        .feature-card .feature-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .feature-card:hover .feature-img img {
            transform: scale(1.04);
        }

        .feature-card .feature-body {
            padding: 20px 22px 22px;
        }

        .feature-card .feature-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 14px;
            background-color: rgba(255, 107, 53, 0.12);
            color: var(--color-accent);
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .feature-card .feature-title {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .feature-card .feature-title a {
            color: var(--color-text);
            text-decoration: none;
        }

        .feature-card .feature-title a:hover {
            color: var(--color-primary);
        }

        .feature-card .feature-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== 数据趋势 ========== */
        .data-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .data-item {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .data-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .data-item .data-number {
            font-size: 34px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1;
            margin-bottom: 8px;
            font-feature-settings: "tnum";
        }

        .data-item .data-number .unit {
            font-size: 18px;
            font-weight: 600;
            margin-left: 2px;
        }

        .data-item .data-label {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(29, 111, 242, 0.2);
        }

        .faq-item.open {
            border-color: rgba(29, 111, 242, 0.35);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            cursor: pointer;
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--color-primary);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background-color: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            transition: var(--transition);
        }

        .faq-item.open .faq-question .faq-icon {
            background-color: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 22px 18px;
            font-size: 14px;
            line-height: 1.75;
            color: var(--color-text-secondary);
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* ========== CTA ========== */
        .cta-box {
            background-color: var(--color-bg-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-sm);
        }

        .cta-box .cta-text h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--color-text);
        }

        .cta-box .cta-text p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            transition: var(--transition);
            cursor: pointer;
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-primary {
            background-color: var(--color-primary);
            color: #fff;
        }

        .btn-primary:hover {
            background-color: var(--color-primary-dark);
            color: #fff;
            text-decoration: none;
        }

        .btn-accent {
            background-color: var(--color-accent);
            color: #fff;
            padding: 14px 32px;
            font-size: 15px;
        }

        .btn-accent:hover {
            background-color: var(--color-accent-dark);
            color: #fff;
            text-decoration: none;
        }

        .btn-outline {
            background-color: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn-outline:hover {
            background-color: rgba(29, 111, 242, 0.08);
            color: var(--color-primary);
            text-decoration: none;
        }

        /* ========== 热榜 ========== */
        .trend-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 720px;
            margin: 0 auto;
        }

        .trend-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background-color: var(--color-card);
            border-radius: 12px;
            border: 1px solid var(--color-border);
            padding: 14px 18px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .trend-item:hover {
            transform: translateX(4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(29, 111, 242, 0.25);
        }

        .trend-item .trend-rank {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background-color: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            color: var(--color-primary);
            flex-shrink: 0;
        }

        .trend-item .trend-rank.top1 {
            background-color: rgba(255, 107, 53, 0.15);
            color: var(--color-accent);
        }

        .trend-item .trend-rank.top2 {
            background-color: rgba(43, 182, 115, 0.15);
            color: var(--color-success);
        }

        .trend-item .trend-rank.top3 {
            background-color: rgba(0, 217, 245, 0.15);
            color: var(--color-secondary-dark);
        }

        .trend-item .trend-info {
            flex: 1;
        }

        .trend-item .trend-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.4;
        }

        .trend-item .trend-title a {
            color: var(--color-text);
            text-decoration: none;
        }

        .trend-item .trend-title a:hover {
            color: var(--color-primary);
        }

        .trend-item .trend-view {
            font-size: 12px;
            color: var(--color-text-secondary);
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background-color: var(--color-footer);
            color: var(--color-footer-text);
            padding: 48px 0 24px;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .site-footer .footer-brand .logo {
            color: #fff;
            font-size: 18px;
            margin-bottom: 12px;
        }

        .site-footer .footer-brand .logo:hover {
            color: var(--color-secondary);
        }

        .site-footer .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: var(--color-footer-text);
            max-width: 300px;
        }

        .site-footer h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .site-footer .footer-links a {
            font-size: 13px;
            color: var(--color-footer-text);
            text-decoration: none;
            transition: var(--transition);
        }

        .site-footer .footer-links a:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }

        .site-footer .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 6px;
            font-size: 13px;
        }

        .site-footer .footer-contact a {
            color: var(--color-footer-text);
            text-decoration: none;
        }

        .site-footer .footer-contact a:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--color-footer-text);
        }

        .site-footer .footer-bottom a {
            color: var(--color-footer-text);
            text-decoration: none;
        }

        .site-footer .footer-bottom a:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .wiki-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .data-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .category-hero .container {
                grid-template-columns: 1fr 280px;
                gap: 28px;
            }
        }

        @media (max-width: 991px) {
            .hamburger {
                display: flex;
            }

            .main-nav {
                position: fixed;
                top: var(--nav-height);
                right: 0;
                width: 100%;
                max-width: 360px;
                background-color: #fff;
                flex-direction: column;
                gap: 0;
                padding: 16px 24px 24px;
                border: 1px solid var(--color-border);
                border-radius: 0 0 16px 16px;
                box-shadow: var(--shadow-lg);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.3s ease;
                z-index: 999;
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .main-nav a {
                padding: 14px 0;
                border-bottom: 1px solid var(--color-border);
                font-size: 15px;
                width: 100%;
                text-align: left;
            }

            .main-nav a:last-child {
                border-bottom: none;
            }

            .main-nav a.active {
                border-bottom-color: var(--color-border);
                color: var(--color-primary);
                background-color: rgba(29, 111, 242, 0.05);
                padding-left: 12px;
                border-radius: 6px;
            }

            .category-hero .container {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .category-hero .hero-visual {
                aspect-ratio: 16/7;
            }

            .filter-toolbar {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-padding-desktop: 40px 0;
                --section-padding-mobile: 32px 0;
            }

            .section-header h2 {
                font-size: 22px;
            }

            .category-hero h1 {
                font-size: 24px;
            }

            .wiki-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .feature-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .data-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .data-item .data-number {
                font-size: 26px;
            }

            .cta-box {
                flex-direction: column;
                align-items: flex-start;
                padding: 22px 20px;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .filter-tags {
                gap: 6px;
            }

            .filter-tag {
                padding: 5px 12px;
                font-size: 12px;
            }

            .sort-btns {
                gap: 6px;
            }

            .sort-btn {
                padding: 5px 10px;
                font-size: 12px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .category-hero {
                padding: 28px 0 24px;
            }

            .category-hero h1 {
                font-size: 21px;
            }

            .category-hero .hero-desc {
                font-size: 14px;
            }

            .data-strip {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

            .data-item {
                padding: 16px 12px;
            }

            .data-item .data-number {
                font-size: 22px;
            }

            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }

            .faq-answer {
                padding: 0 16px 14px;
                font-size: 13px;
            }

            .trend-item {
                padding: 10px 12px;
                gap: 10px;
            }

            .trend-item .trend-title {
                font-size: 13px;
            }

            .btn {
                padding: 10px 20px;
                font-size: 13px;
            }

            .btn-accent {
                padding: 12px 24px;
                font-size: 14px;
            }
        }