/* roulang page: index */
:root {
            --primary: #ff3366;
            --primary-dark: #e02456;
            --primary-light: #fff0f3;
            --accent: #7928ca;
            --dark: #0f172a;
            --gray-900: #1e293b;
            --gray-700: #334155;
            --gray-500: #64748b;
            --gray-300: #cbd5e1;
            --gray-100: #f1f5f9;
            --gray-50: #f8fafc;
            --white: #ffffff;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
            --shadow-lg: 0 10px 25px rgba(0,0,0,0.08);
            --shadow-glow: 0 0 20px rgba(255, 51, 102, 0.25);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--white);
            color: var(--gray-700);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

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

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* 导航栏 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--gray-100);
            box-shadow: var(--shadow-sm);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.5px;
        }

        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 20px;
            box-shadow: 0 4px 10px rgba(255, 51, 102, 0.3);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 32px;
        }

        .nav-link {
            font-size: 16px;
            font-weight: 500;
            color: var(--gray-700);
            padding: 8px 0;
            position: relative;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }

        .nav-action {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        /* 按钮系统 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-full);
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
            text-align: center;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--white);
            box-shadow: var(--shadow-glow);
        }

        .btn-primary:hover {
            opacity: 0.95;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(255, 51, 102, 0.35);
        }

        .btn-outline {
            border-color: var(--gray-300);
            color: var(--gray-700);
            background: var(--white);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .btn-white {
            background: var(--white);
            color: var(--dark);
        }

        .btn-white:hover {
            background: var(--gray-50);
        }

        /* 基础区块样式 */
        .section {
            padding: 80px 0;
            position: relative;
        }

        .section-alt {
            background-color: var(--gray-50);
        }

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

        .section-header {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 50px auto;
        }

        .section-badge {
            display: inline-block;
            padding: 6px 14px;
            background-color: var(--primary-light);
            color: var(--primary);
            border-radius: var(--radius-full);
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .section-dark .section-badge {
            background-color: rgba(255, 51, 102, 0.2);
            color: #ff6b8b;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .section-dark .section-title {
            color: var(--white);
        }

        .section-desc {
            font-size: 16px;
            color: var(--gray-500);
            line-height: 1.7;
        }

        .section-dark .section-desc {
            color: var(--gray-300);
        }

        /* 1. Hero 蓝图：安全合规主张 + 检查项勾选条 + 信任 CTA */
        .hero-section {
            padding: 90px 0 70px 0;
            background: linear-gradient(180deg, #fff7f9 0%, #ffffff 100%);
            border-bottom: 1px solid var(--gray-100);
        }

        .hero-content {
            text-align: center;
            max-width: 860px;
            margin: 0 auto;
        }

        .hero-h1 {
            font-size: 42px;
            font-weight: 900;
            color: var(--dark);
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }

        .hero-h1 span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-intro {
            font-size: 17px;
            color: var(--gray-700);
            line-height: 1.8;
            margin-bottom: 36px;
            text-align: justify;
            text-align-last: center;
        }

        .hero-checklist {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            margin-bottom: 40px;
        }

        .check-item {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--white);
            padding: 10px 20px;
            border-radius: var(--radius-full);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--gray-100);
            font-size: 14px;
            font-weight: 600;
            color: var(--gray-900);
        }

        .check-icon {
            width: 20px;
            height: 20px;
            background-color: #10b981;
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
        }

        .hero-trust-cta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
        }

        /* 2. 已上线核心能力 */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .feature-card {
            background: var(--white);
            padding: 32px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--gray-100);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(255, 51, 102, 0.2);
        }

        .feature-card-icon {
            width: 54px;
            height: 54px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
            font-weight: bold;
        }

        .feature-card-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .feature-card-desc {
            font-size: 15px;
            color: var(--gray-500);
            line-height: 1.6;
        }

        /* 3. 进行中功能 */
        .progress-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .progress-card {
            background: var(--white);
            padding: 30px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--gray-100);
            box-shadow: var(--shadow-sm);
        }

        .progress-head {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 16px;
        }

        .status-badge {
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-full);
            background: #e0f2fe;
            color: #0284c7;
        }

        .progress-bar-wrap {
            height: 8px;
            background: var(--gray-100);
            border-radius: var(--radius-full);
            overflow: hidden;
            margin: 16px 0;
        }

        .progress-bar-inner {
            height: 100%;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: var(--radius-full);
        }

        /* 4. 规划中特性 */
        .plan-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .plan-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 24px;
            border-radius: var(--radius-md);
            transition: var(--transition);
        }

        .plan-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 51, 102, 0.4);
        }

        .plan-quarter {
            font-size: 12px;
            color: var(--primary);
            font-weight: 700;
            margin-bottom: 8px;
        }

        .plan-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 10px;
        }

        .plan-desc {
            font-size: 14px;
            color: var(--gray-300);
            line-height: 1.5;
        }

        /* 5. 直播预告与专属看点 */
        .live-preview-box {
            background: linear-gradient(135deg, #1e1b4b, #311042);
            border-radius: var(--radius-lg);
            padding: 40px;
            color: var(--white);
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .live-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(239, 68, 68, 0.2);
            color: #ef4444;
            padding: 6px 14px;
            border-radius: var(--radius-full);
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .live-dot {
            width: 8px;
            height: 8px;
            background-color: #ef4444;
            border-radius: 50%;
        }

        .live-points {
            list-style: none;
            margin: 20px 0;
        }

        .live-points li {
            padding: 8px 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            color: var(--gray-300);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .live-timer-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 30px;
            text-align: center;
        }

        .timer-nums {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin: 20px 0;
        }

        .timer-unit {
            background: rgba(0, 0, 0, 0.3);
            padding: 12px;
            border-radius: var(--radius-sm);
            min-width: 60px;
        }

        .timer-val {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
        }

        .timer-lbl {
            font-size: 12px;
            color: var(--gray-300);
        }

        /* 6. 工艺方法与编码技术 */
        .tech-step-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .tech-step-item {
            background: var(--white);
            border: 1px solid var(--gray-100);
            border-radius: var(--radius-md);
            padding: 28px;
            position: relative;
        }

        .tech-step-num {
            position: absolute;
            top: 20px;
            right: 20px;
            font-size: 28px;
            font-weight: 900;
            color: var(--gray-100);
        }

        .tech-step-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .tech-step-desc {
            font-size: 14px;
            color: var(--gray-500);
            line-height: 1.6;
        }

        /* 7. 新手入门指南 */
        .guide-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .guide-card {
            background: var(--white);
            padding: 30px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--gray-100);
            text-align: center;
        }

        .guide-badge {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            margin: 0 auto 20px auto;
        }

        /* 8. 创作者安全保障体系 */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .security-card {
            background: var(--white);
            padding: 32px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--gray-100);
            border-left: 4px solid var(--primary);
        }

        /* 9. 频道矩阵与分类入口 */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .matrix-card {
            display: block;
            background: var(--white);
            padding: 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--gray-100);
            text-align: center;
            transition: var(--transition);
        }

        .matrix-card:hover {
            border-color: var(--primary);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .matrix-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 6px;
        }

        .matrix-count {
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
        }

        /* 10. 用户口碑墙 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .review-card {
            background: var(--white);
            padding: 30px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--gray-100);
            box-shadow: var(--shadow-sm);
        }

        .review-stars {
            color: #f59e0b;
            font-size: 16px;
            margin-bottom: 14px;
        }

        .review-text {
            font-size: 15px;
            color: var(--gray-700);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .review-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--gray-100);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
        }

        .review-name {
            font-size: 15px;
            font-weight: 700;
            color: var(--dark);
        }

        .review-role {
            font-size: 13px;
            color: var(--gray-500);
        }

        /* 11. 更新日志时间线 */
        .timeline {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            padding-left: 30px;
            border-left: 2px solid var(--gray-100);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 40px;
        }

        .timeline-dot {
            position: absolute;
            left: -37px;
            top: 4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid var(--white);
            box-shadow: 0 0 0 2px var(--primary);
        }

        .timeline-date {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }

        .timeline-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .timeline-desc {
            font-size: 14px;
            color: var(--gray-500);
            line-height: 1.6;
        }

        /* 12. 行业资讯与创作动态 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .news-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--gray-100);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .news-body {
            padding: 24px;
        }

        .news-meta {
            font-size: 13px;
            color: var(--gray-500);
            margin-bottom: 10px;
        }

        .news-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.4;
            margin-bottom: 12px;
        }

        .news-summary {
            font-size: 14px;
            color: var(--gray-500);
            line-height: 1.6;
        }

        /* 13. 订阅更新收口 */
        .subscribe-box {
            background: linear-gradient(135deg, var(--dark), var(--gray-900));
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            color: var(--white);
        }

        .subscribe-form {
            display: flex;
            max-width: 500px;
            margin: 30px auto 0 auto;
            gap: 12px;
        }

        .subscribe-input {
            flex: 1;
            padding: 14px 20px;
            border-radius: var(--radius-full);
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.08);
            color: var(--white);
            font-size: 15px;
            outline: none;
        }

        .subscribe-input::placeholder {
            color: var(--gray-300);
        }

        .subscribe-input:focus {
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.12);
        }

        /* 页脚 */
        .site-footer {
            background-color: #0b1120;
            color: var(--gray-300);
            padding: 70px 0 30px 0;
            font-size: 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-brand .brand-logo {
            color: var(--white);
            margin-bottom: 16px;
        }

        .footer-about {
            font-size: 14px;
            line-height: 1.7;
            color: var(--gray-500);
            max-width: 340px;
        }

        .footer-col-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 20px;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--gray-500);
            font-size: 13px;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .grid-3, .news-grid, .reviews-grid, .security-grid, .guide-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .plan-grid, .tech-step-grid, .matrix-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .hero-h1 {
                font-size: 30px;
            }
            .section {
                padding: 50px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .nav-menu {
                gap: 16px;
            }
            .grid-3, .news-grid, .reviews-grid, .security-grid, .guide-steps, .progress-grid, .plan-grid, .tech-step-grid, .matrix-grid {
                grid-template-columns: 1fr;
            }
            .live-preview-box {
                grid-template-columns: 1fr;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }
        }

/* roulang page: category1 */
:root {
        --primary: #ff3366;
        --primary-dark: #e02456;
        --primary-light: #fff0f3;
        --accent: #7928ca;
        --dark: #0f172a;
        --gray-900: #1e293b;
        --gray-700: #334155;
        --gray-500: #64748b;
        --gray-300: #cbd5e1;
        --gray-100: #f1f5f9;
        --gray-50: #f8fafc;
        --white: #ffffff;
        --radius-sm: 6px;
        --radius-md: 12px;
        --radius-lg: 20px;
        --radius-full: 9999px;
        --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
        --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
        --shadow-lg: 0 10px 25px rgba(0,0,0,0.08);
        --shadow-glow: 0 0 20px rgba(255, 51, 102, 0.25);
        --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --container-max: 1200px;
    }
    * {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        background-color: var(--white);
        color: var(--gray-700);
        line-height: 1.6;
        -webkit-font-smoothing: antialiased;
    }
    a {
        color: inherit;
        text-decoration: none;
        transition: var(--transition);
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    .container {
        width: 100%;
        max-width: var(--container-max);
        margin-left: auto;
        margin-right: auto;
        padding-left: 20px;
        padding-right: 20px;
    }
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--gray-100);
        box-shadow: var(--shadow-sm);
    }
    .nav-wrapper {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 72px;
    }
    .brand-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 24px;
        font-weight: 800;
        color: var(--dark);
        letter-spacing: -0.5px;
    }
    .brand-logo .logo-icon {
        width: 38px;
        height: 38px;
        background: linear-gradient(135deg, var(--primary), var(--accent));
        border-radius: var(--radius-md);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--white);
        font-size: 20px;
        box-shadow: 0 4px 10px rgba(255, 51, 102, 0.3);
    }
    .nav-menu {
        display: flex;
        align-items: center;
        list-style: none;
        gap: 32px;
    }
    .nav-link {
        font-size: 16px;
        font-weight: 500;
        color: var(--gray-700);
        padding: 8px 0;
        position: relative;
    }
    .nav-link:hover, .nav-link.active {
        color: var(--primary);
    }
    .nav-link.active::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 2px;
        background-color: var(--primary);
        border-radius: 2px;
    }
    .nav-action {
        display: flex;
        align-items: center;
        gap: 16px;
    }
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 12px 28px;
        font-size: 15px;
        font-weight: 600;
        border-radius: var(--radius-full);
        cursor: pointer;
        transition: var(--transition);
        border: 1px solid transparent;
        text-align: center;
        white-space: nowrap;
    }
    .btn-primary {
        background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        color: var(--white);
        box-shadow: var(--shadow-glow);
    }
    .btn-primary:hover {
        opacity: 0.95;
        transform: translateY(-1px);
        box-shadow: 0 6px 20px rgba(255, 51, 102, 0.35);
    }
    .btn-outline {
        border-color: var(--gray-300);
        color: var(--gray-700);
        background: var(--white);
    }
    .btn-outline:hover {
        border-color: var(--primary);
        color: var(--primary);
        background: var(--primary-light);
    }
    .btn-white {
        background: var(--white);
        color: var(--dark);
    }
    .btn-white:hover {
        background: var(--gray-50);
    }
    .section {
        padding: 80px 0;
        position: relative;
    }
    .section-alt {
        background-color: var(--gray-50);
    }
    .section-dark {
        background-color: var(--dark);
        color: var(--white);
    }
    .section-header {
        text-align: center;
        max-width: 760px;
        margin: 0 auto 50px auto;
    }
    .section-badge {
        display: inline-block;
        padding: 6px 14px;
        background-color: var(--primary-light);
        color: var(--primary);
        border-radius: var(--radius-full);
        font-size: 13px;
        font-weight: 700;
        margin-bottom: 16px;
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }
    .section-dark .section-badge {
        background-color: rgba(255, 51, 102, 0.2);
        color: #ff6b8b;
    }
    .section-title {
        font-size: 32px;
        font-weight: 800;
        color: var(--dark);
        line-height: 1.3;
        margin-bottom: 16px;
        letter-spacing: -0.5px;
    }
    .section-dark .section-title {
        color: var(--white);
    }
    .section-desc {
        font-size: 16px;
        color: var(--gray-500);
        line-height: 1.7;
    }
    .section-dark .section-desc {
        color: var(--gray-300);
    }

    /* 分类页定制 Hero */
    .cat-hero {
        padding: 60px 0 50px 0;
        background: radial-gradient(circle at top right, rgba(255, 51, 102, 0.08), transparent 50%),
                    radial-gradient(circle at bottom left, rgba(121, 40, 202, 0.05), transparent 40%);
        border-bottom: 1px solid var(--gray-100);
    }
    .cat-hero-content {
        max-width: 860px;
        margin: 0 auto;
        text-align: center;
    }
    .cat-hero-title {
        font-size: 40px;
        font-weight: 900;
        color: var(--dark);
        line-height: 1.25;
        margin-bottom: 20px;
        letter-spacing: -0.8px;
    }
    .cat-hero-desc {
        font-size: 18px;
        color: var(--gray-500);
        line-height: 1.7;
        margin-bottom: 36px;
    }
    .channel-filter-bar {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px;
    }
    .filter-btn {
        padding: 10px 22px;
        border-radius: var(--radius-full);
        background: var(--white);
        border: 1px solid var(--gray-300);
        color: var(--gray-700);
        font-size: 14px;
        font-weight: 600;
        cursor: pointer;
        transition: var(--transition);
    }
    .filter-btn:hover, .filter-btn.active {
        background: var(--primary);
        color: var(--white);
        border-color: var(--primary);
        box-shadow: 0 4px 12px rgba(255, 51, 102, 0.2);
    }

    /* 频道矩阵栅格 */
    .channel-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }
    .channel-card {
        background: var(--white);
        border-radius: var(--radius-lg);
        padding: 32px 28px;
        border: 1px solid var(--gray-100);
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
        display: flex;
        flex-direction: column;
    }
    .channel-card:hover {
        transform: translateY(-5px);
        box-shadow: var(--shadow-lg);
        border-color: rgba(255, 51, 102, 0.2);
    }
    .channel-head {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 20px;
    }
    .channel-tag {
        font-size: 12px;
        font-weight: 700;
        padding: 4px 10px;
        background: var(--primary-light);
        color: var(--primary);
        border-radius: var(--radius-sm);
    }
    .channel-count {
        font-size: 13px;
        color: var(--gray-500);
    }
    .channel-name {
        font-size: 22px;
        font-weight: 800;
        color: var(--dark);
        margin-bottom: 12px;
    }
    .channel-summary {
        font-size: 15px;
        color: var(--gray-500);
        line-height: 1.6;
        margin-bottom: 24px;
        flex-grow: 1;
    }
    .channel-meta-box {
        background: var(--gray-50);
        border-radius: var(--radius-md);
        padding: 14px 18px;
        margin-bottom: 24px;
        display: flex;
        justify-content: space-between;
    }
    .channel-meta-item {
        text-align: center;
    }
    .meta-val {
        font-size: 16px;
        font-weight: 700;
        color: var(--dark);
    }
    .meta-lbl {
        font-size: 12px;
        color: var(--gray-500);
        margin-top: 2px;
    }

    /* 播放协议与技术支撑卡片 */
    .tech-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }
    .tech-card {
        background: var(--white);
        border-radius: var(--radius-md);
        padding: 28px 24px;
        border: 1px solid var(--gray-100);
        box-shadow: var(--shadow-sm);
    }
    .tech-icon {
        width: 48px;
        height: 48px;
        border-radius: var(--radius-md);
        background: var(--primary-light);
        color: var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 22px;
        margin-bottom: 18px;
    }
    .tech-title {
        font-size: 18px;
        font-weight: 700;
        color: var(--dark);
        margin-bottom: 10px;
    }
    .tech-desc {
        font-size: 14px;
        color: var(--gray-500);
        line-height: 1.6;
    }

    /* 创作者生态双列图文 */
    .creator-showcase {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 48px;
        align-items: center;
    }
    .creator-box-left {
        background: linear-gradient(135deg, #1e293b, #0f172a);
        padding: 44px;
        border-radius: var(--radius-lg);
        color: var(--white);
        box-shadow: var(--shadow-lg);
        border: 1px solid rgba(255,255,255,0.1);
    }
    .creator-box-left h3 {
        font-size: 26px;
        font-weight: 800;
        margin-bottom: 16px;
        color: var(--white);
    }
    .creator-box-left p {
        color: var(--gray-300);
        font-size: 15px;
        line-height: 1.7;
        margin-bottom: 24px;
    }
    .creator-stat-row {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
        padding-top: 24px;
        border-top: 1px solid rgba(255,255,255,0.1);
    }
    .stat-num {
        font-size: 24px;
        font-weight: 800;
        color: var(--primary);
    }
    .stat-text {
        font-size: 12px;
        color: var(--gray-300);
        margin-top: 4px;
    }
    .creator-list-right {
        display: flex;
        flex-direction: column;
        gap: 20px;
    }
    .creator-item {
        display: flex;
        gap: 20px;
        background: var(--white);
        padding: 22px;
        border-radius: var(--radius-md);
        border: 1px solid var(--gray-100);
        box-shadow: var(--shadow-sm);
    }
    .creator-avatar-badge {
        width: 48px;
        height: 48px;
        border-radius: var(--radius-full);
        background: var(--gray-100);
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 800;
        color: var(--primary);
        flex-shrink: 0;
    }
    .creator-info h4 {
        font-size: 17px;
        font-weight: 700;
        color: var(--dark);
        margin-bottom: 6px;
    }
    .creator-info p {
        font-size: 14px;
        color: var(--gray-500);
        line-height: 1.6;
    }

    /* 播放与交互规范 */
    .flow-steps {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        position: relative;
    }
    .step-card {
        background: var(--white);
        padding: 30px 24px;
        border-radius: var(--radius-lg);
        border: 1px solid var(--gray-100);
        text-align: center;
        position: relative;
    }
    .step-number {
        width: 40px;
        height: 40px;
        background: var(--primary-light);
        color: var(--primary);
        font-weight: 800;
        font-size: 18px;
        border-radius: var(--radius-full);
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 18px auto;
    }
    .step-card h4 {
        font-size: 18px;
        font-weight: 700;
        color: var(--dark);
        margin-bottom: 10px;
    }
    .step-card p {
        font-size: 14px;
        color: var(--gray-500);
        line-height: 1.6;
    }

    /* 转化区与订阅 */
    .subscribe-box {
        background: linear-gradient(135deg, var(--dark) 0%, #1e1b4b 100%);
        border-radius: var(--radius-lg);
        padding: 60px 40px;
        text-align: center;
        color: var(--white);
        box-shadow: var(--shadow-lg);
    }
    .subscribe-box h3 {
        font-size: 32px;
        font-weight: 800;
        margin-bottom: 16px;
    }
    .subscribe-box p {
        font-size: 16px;
        color: var(--gray-300);
        max-width: 600px;
        margin: 0 auto 32px auto;
    }
    .subscribe-form {
        display: flex;
        justify-content: center;
        max-width: 500px;
        margin: 0 auto;
        gap: 12px;
    }
    .form-input {
        flex-grow: 1;
        padding: 14px 20px;
        border-radius: var(--radius-full);
        border: 1px solid rgba(255,255,255,0.2);
        background: rgba(255,255,255,0.08);
        color: var(--white);
        font-size: 15px;
        outline: none;
    }
    .form-input:focus {
        border-color: var(--primary);
        background: rgba(255,255,255,0.15);
    }

    /* 页脚 */
    .site-footer {
        background-color: var(--dark);
        color: var(--gray-300);
        padding: 70px 0 30px 0;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 40px;
        margin-bottom: 50px;
    }
    .footer-brand .brand-logo {
        color: var(--white);
        margin-bottom: 16px;
    }
    .footer-about {
        font-size: 14px;
        color: var(--gray-500);
        line-height: 1.7;
        max-width: 320px;
    }
    .footer-col-title {
        font-size: 16px;
        font-weight: 700;
        color: var(--white);
        margin-bottom: 20px;
    }
    .footer-links {
        list-style: none;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }
    .footer-links a {
        font-size: 14px;
        color: var(--gray-500);
    }
    .footer-links a:hover {
        color: var(--primary);
    }
    .footer-bottom {
        padding-top: 30px;
        border-top: 1px solid rgba(255, 255, 255, 0.05);
        display: flex;
        justify-content: space-between;
        font-size: 13px;
        color: var(--gray-500);
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
        .channel-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .tech-grid, .flow-steps {
            grid-template-columns: repeat(2, 1fr);
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
    }
    @media (max-width: 768px) {
        .creator-showcase {
            grid-template-columns: 1fr;
        }
        .cat-hero-title {
            font-size: 30px;
        }
        .channel-grid {
            grid-template-columns: 1fr;
        }
        .subscribe-form {
            flex-direction: column;
        }
        .footer-bottom {
            flex-direction: column;
            gap: 12px;
            text-align: center;
        }
    }
    @media (max-width: 520px) {
        .tech-grid, .flow-steps {
            grid-template-columns: 1fr;
        }
        .nav-menu {
            display: none;
        }
    }