/* roulang page: index */
/* ==================== 设计系统与基础变量 ==================== */
        :root {
            --bg-deep: #080b12;
            --bg-base: #0d121f;
            --bg-surface: #141b2d;
            --bg-card: #182238;
            --bg-card-hover: #1f2c49;
            --border-light: rgba(255, 255, 255, 0.08);
            --border-highlight: rgba(245, 158, 11, 0.35);
            --text-main: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --accent-gold: #f59e0b;
            --accent-gold-hover: #d97706;
            --accent-cyan: #06b6d4;
            --accent-blue: #3b82f6;
            --accent-red: #ef4444;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-full: 9999px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(245, 158, 11, 0.15);
            --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1240px;
        }

        /* 基础重置 */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-main);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        ul, ol {
            list-style: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input {
            font: inherit;
            border: none;
            outline: none;
        }

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

        /* ==================== 导航系统 (目录下拉式) ==================== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(8, 11, 18, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            height: 72px;
            display: flex;
            align-items: center;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: #ffffff;
        }
        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent-gold), #b45309);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: #000;
            font-weight: 900;
            box-shadow: 0 2px 10px rgba(245, 158, 11, 0.35);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-item {
            position: relative;
        }
        .nav-link {
            padding: 10px 16px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-link:hover, .nav-item.active .nav-link {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-link .caret {
            width: 8px;
            height: 8px;
            border-right: 2px solid currentColor;
            border-bottom: 2px solid currentColor;
            transform: rotate(45deg);
            margin-top: -3px;
            transition: var(--transition);
        }
        .nav-item:hover .caret {
            transform: rotate(-135deg);
            margin-top: 2px;
        }

        /* 纯CSS轻量下拉目录 */
        .dropdown-menu {
            position: absolute;
            top: 100%;
            left: 0;
            width: 320px;
            background: var(--bg-surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 14px;
            box-shadow: var(--shadow-md);
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
            transition: var(--transition);
            pointer-events: none;
        }
        .nav-item:hover .dropdown-menu {
            opacity: 1;
            visibility: visible;
            transform: translateY(4px);
            pointer-events: auto;
        }
        .dropdown-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 6px;
        }
        .dropdown-item {
            display: flex;
            flex-direction: column;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .dropdown-item:hover {
            background: var(--bg-card);
        }
        .dropdown-item-title {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-main);
        }
        .dropdown-item-desc {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        .nav-tools {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-search {
            position: relative;
            display: flex;
            align-items: center;
        }
        .header-search input {
            background: var(--bg-surface);
            border: 1px solid var(--border-light);
            color: var(--text-main);
            padding: 8px 14px 8px 36px;
            border-radius: var(--radius-full);
            font-size: 0.88rem;
            width: 210px;
            transition: var(--transition);
        }
        .header-search input:focus {
            border-color: var(--accent-gold);
            width: 260px;
            box-shadow: 0 0 12px rgba(245, 158, 11, 0.2);
        }
        .header-search .search-icon {
            position: absolute;
            left: 12px;
            color: var(--text-muted);
            font-size: 0.85rem;
            pointer-events: none;
        }

        /* 移动端菜单开关 (CSS控制) */
        .mobile-toggle {
            display: none;
            background: none;
            color: var(--text-main);
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* ==================== 通用板块结构样式 ==================== */
        .section-block {
            padding: 96px 0;
            position: relative;
            border-bottom: 1px solid var(--border-light);
        }
        .section-block:nth-child(even) {
            background: var(--bg-base);
        }
        .section-block:nth-child(odd) {
            background: var(--bg-deep);
        }
        .section-header {
            max-width: 860px;
            margin-bottom: 54px;
        }
        .section-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            background: rgba(245, 158, 11, 0.12);
            color: var(--accent-gold);
            border: 1px solid var(--border-highlight);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        .section-title {
            font-size: 2.15rem;
            font-weight: 800;
            line-height: 1.3;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* 统一按钮系统 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn-primary {
            background: var(--accent-gold);
            color: #000000;
            box-shadow: 0 4px 18px rgba(245, 158, 11, 0.3);
        }
        .btn-primary:hover {
            background: var(--accent-gold-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(245, 158, 11, 0.45);
        }
        .btn-secondary {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-main);
            border: 1px solid var(--border-light);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }

        /* ==================== 板块 1: Hero 工具落地 ==================== */
        .hero-section {
            padding: 90px 0 100px;
            background: radial-gradient(circle at 50% 20%, rgba(24, 34, 56, 0.8) 0%, rgba(8, 11, 18, 1) 75%);
            border-bottom: 1px solid var(--border-light);
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: "";
            position: absolute;
            top: -120px;
            left: 50%;
            transform: translateX(-50%);
            width: 720px;
            height: 380px;
            background: radial-gradient(ellipse, rgba(245, 158, 11, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 48px;
            align-items: center;
        }
        .hero-content h1 {
            font-size: 2.85rem;
            font-weight: 900;
            line-height: 1.22;
            letter-spacing: -1px;
            margin-bottom: 22px;
            color: #ffffff;
        }
        .hero-content h1 span {
            background: linear-gradient(90deg, #ffffff 40%, var(--accent-gold) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 34px;
        }
        .hero-action-bar {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 36px;
            flex-wrap: wrap;
        }
        .hero-stats-row {
            display: flex;
            align-items: center;
            gap: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
        }
        .hero-stat-item h4 {
            font-size: 1.45rem;
            font-weight: 800;
            color: #ffffff;
        }
        .hero-stat-item p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* 演示区卡片 */
        .hero-demo-stage {
            background: var(--bg-surface);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-md), var(--shadow-glow);
            position: relative;
        }
        .demo-badge-bar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 18px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border-light);
        }
        .demo-tag {
            font-size: 0.75rem;
            padding: 3px 8px;
            background: rgba(6, 182, 212, 0.15);
            color: var(--accent-cyan);
            border-radius: var(--radius-sm);
            font-weight: 700;
        }
        .demo-screen {
            background: var(--bg-deep);
            border-radius: var(--radius-md);
            padding: 18px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            margin-bottom: 18px;
        }
        .demo-film-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .demo-params-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px;
            margin-top: 12px;
        }
        .param-cell {
            background: rgba(255, 255, 255, 0.03);
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            border-left: 3px solid var(--accent-gold);
        }
        .param-label {
            font-size: 0.72rem;
            color: var(--text-muted);
        }
        .param-val {
            font-size: 0.88rem;
            font-weight: 700;
            color: var(--text-main);
        }
        .demo-console {
            background: #04060a;
            border-radius: var(--radius-sm);
            padding: 12px;
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
            font-size: 0.78rem;
            color: #38bdf8;
            line-height: 1.6;
        }

        /* ==================== 板块 2: 分类入口墙 ==================== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .category-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-highlight);
            background: var(--bg-card-hover);
        }
        .cat-icon-wrap {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 18px;
            color: var(--accent-gold);
        }
        .cat-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
        }
        .cat-desc {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 18px;
            line-height: 1.65;
        }
        .cat-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 14px;
            border-top: 1px solid var(--border-light);
            font-size: 0.85rem;
            color: var(--accent-gold);
            font-weight: 600;
        }

        /* ==================== 板块 3: 核心痛点与方案对比 ==================== */
        .comparison-table-wrapper {
            background: var(--bg-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .compare-row {
            display: grid;
            grid-template-columns: 240px 1fr 1fr;
            border-bottom: 1px solid var(--border-light);
        }
        .compare-row:last-child {
            border-bottom: none;
        }
        .compare-row.header {
            background: rgba(255, 255, 255, 0.04);
            font-weight: 700;
            font-size: 1.05rem;
            color: #ffffff;
        }
        .compare-cell {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            font-size: 0.92rem;
            line-height: 1.5;
        }
        .compare-cell.feature-name {
            font-weight: 600;
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.015);
            border-right: 1px solid var(--border-light);
        }
        .compare-cell.pianku {
            color: #ffffff;
            background: rgba(245, 158, 11, 0.04);
            border-right: 1px solid var(--border-light);
        }
        .compare-cell.pianku .tag-good {
            color: #10b981;
            font-weight: 700;
            margin-right: 8px;
        }
        .compare-cell.traditional {
            color: var(--text-muted);
        }
        .compare-cell.traditional .tag-bad {
            color: var(--accent-red);
            font-weight: 700;
            margin-right: 8px;
        }

        /* ==================== 板块 4: 精选推荐 4K HDR 专区 ==================== */
        .curated-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .curated-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .curated-card:hover {
            transform: translateY(-6px);
            border-color: rgba(245, 158, 11, 0.4);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.6);
        }
        .poster-frame {
            height: 220px;
            background: #111624;
            position: relative;
            display: flex;
            align-items: flex-end;
            padding: 16px;
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--border-light);
        }
        .poster-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 11, 18, 0.2) 0%, rgba(8, 11, 18, 0.95) 100%);
        }
        .poster-badges {
            position: relative;
            z-index: 2;
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .chip {
            padding: 2px 7px;
            border-radius: 4px;
            font-size: 0.72rem;
            font-weight: 700;
            background: rgba(0, 0, 0, 0.75);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #fff;
        }
        .chip.gold {
            background: rgba(245, 158, 11, 0.2);
            color: var(--accent-gold);
            border-color: var(--accent-gold);
        }
        .card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }
        .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 6px;
        }
        .card-meta-line {
            font-size: 0.8rem;
            color: var(--accent-cyan);
            margin-bottom: 12px;
            font-family: monospace;
        }
        .card-desc-text {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 18px;
            flex-grow: 1;
        }
        .card-specs {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ==================== 板块 5: 片库轨道 (横向滑动条目) ==================== */
        .rail-container {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding-bottom: 18px;
            scroll-snap-type: x mandatory;
            scrollbar-width: thin;
            scrollbar-color: var(--accent-gold) var(--bg-surface);
        }
        .rail-container::-webkit-scrollbar {
            height: 6px;
        }
        .rail-container::-webkit-scrollbar-thumb {
            background: var(--accent-gold);
            border-radius: 3px;
        }
        .rail-item {
            flex: 0 0 280px;
            scroll-snap-align: start;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 18px;
            transition: var(--transition);
        }
        .rail-item:hover {
            border-color: var(--accent-gold);
            background: var(--bg-card-hover);
        }
        .rail-tag {
            font-size: 0.75rem;
            color: var(--accent-gold);
            font-weight: 700;
            margin-bottom: 6px;
        }
        .rail-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .rail-summary {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.5;
            margin-bottom: 14px;
        }
        .rail-status {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            justify-content: space-between;
        }

        /* ==================== 板块 6: 资讯与技术评测专栏 ==================== */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .article-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 26px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: var(--transition);
        }
        .article-card:hover {
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-4px);
        }
        .article-category {
            font-size: 0.8rem;
            color: var(--accent-cyan);
            font-weight: 700;
            margin-bottom: 12px;
        }
        .article-title {
            font-size: 1.18rem;
            font-weight: 700;
            color: #ffffff;
            line-height: 1.4;
            margin-bottom: 12px;
        }
        .article-excerpt {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
            padding-top: 14px;
            border-top: 1px solid var(--border-light);
        }

        /* ==================== 板块 7: 权威口碑与综合热度榜 ==================== */
        .rankings-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .rank-column {
            background: var(--bg-surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 28px;
        }
        .rank-column-title {
            font-size: 1.25rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border-light);
        }
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 12px 14px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.02);
            transition: var(--transition);
        }
        .rank-item:hover {
            background: rgba(255, 255, 255, 0.06);
            transform: translateX(4px);
        }
        .rank-num {
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 6px;
            font-weight: 900;
            font-size: 1rem;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-main);
        }
        .rank-num.top-1 { background: #eab308; color: #000; }
        .rank-num.top-2 { background: #94a3b8; color: #000; }
        .rank-num.top-3 { background: #b45309; color: #fff; }
        .rank-info {
            flex-grow: 1;
        }
        .rank-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: #ffffff;
        }
        .rank-sub {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 2px;
        }
        .rank-score {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--accent-gold);
        }

        /* ==================== 板块 8: 编目整理流 (三步标准化) ==================== */
        .workflow-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            position: relative;
        }
        .workflow-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 32px 26px;
            position: relative;
        }
        .step-indicator {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-full);
            background: rgba(245, 158, 11, 0.15);
            color: var(--accent-gold);
            border: 1px solid var(--border-highlight);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            margin-bottom: 22px;
        }
        .step-heading {
            font-size: 1.18rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }
        .step-content {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ==================== 板块 9: 案例与应用见证 ==================== */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .case-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 28px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .case-tag {
            font-size: 0.78rem;
            color: var(--accent-cyan);
            font-weight: 700;
            margin-bottom: 10px;
        }
        .case-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }
        .case-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .case-result {
            background: rgba(0, 0, 0, 0.3);
            padding: 12px 14px;
            border-radius: var(--radius-sm);
            border-left: 3px solid var(--accent-gold);
            font-size: 0.85rem;
            color: var(--text-main);
            font-weight: 500;
        }

        /* ==================== 板块 10: 适用人群与场景矩阵 ==================== */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .scenario-box {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: left;
            transition: var(--transition);
        }
        .scenario-box:hover {
            border-color: rgba(255, 255, 255, 0.25);
            background: var(--bg-card-hover);
        }
        .scenario-icon {
            font-size: 1.8rem;
            margin-bottom: 16px;
            display: inline-block;
        }
        .scenario-name {
            font-size: 1.1rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 8px;
        }
        .scenario-summary {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ==================== 板块 11: 硬件生态与合作伙伴联盟 ==================== */
        .partners-banner {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
            align-items: center;
        }
        .partner-badge {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 18px 12px;
            text-align: center;
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .partner-badge:hover {
            border-color: var(--accent-gold);
            color: #ffffff;
            background: rgba(255, 255, 255, 0.06);
        }

        /* ==================== 板块 12: 保障体系与服务承诺 ==================== */
        .assurance-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .assurance-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            background: var(--bg-surface);
            padding: 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
        }
        .assurance-icon {
            font-size: 1.5rem;
            color: var(--accent-gold);
            flex-shrink: 0;
            margin-top: 2px;
        }
        .assurance-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 6px;
        }
        .assurance-text {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ==================== 板块 13: 试用与加入收口专区 (单次收口CTA) ==================== */
        .cta-box {
            background: linear-gradient(135deg, #182238 0%, #0d1322 100%);
            border: 1px solid rgba(245, 158, 11, 0.35);
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            text-align: center;
            box-shadow: var(--shadow-glow);
            position: relative;
            overflow: hidden;
        }
        .cta-box h2 {
            font-size: 2.35rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 18px;
        }
        .cta-box p {
            max-width: 780px;
            margin: 0 auto 36px;
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .cta-btn-group {
            display: flex;
            justify-content: center;
            gap: 18px;
            flex-wrap: wrap;
        }

        /* ==================== 页脚系统 ==================== */
        .site-footer {
            background: #05070c;
            border-top: 1px solid var(--border-light);
            padding: 72px 0 32px;
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }
        .footer-brand h3 {
            font-size: 1.4rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 14px;
        }
        .footer-brand p {
            line-height: 1.7;
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 18px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 18px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col a:hover {
            color: var(--accent-gold);
        }
        .footer-bottom {
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-domain {
            color: var(--text-muted);
        }

        /* ==================== 响应式断点控制 ==================== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .category-grid, .curated-grid, .articles-grid, .scenarios-grid, .assurance-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .partners-banner {
                grid-template-columns: repeat(3, 1fr);
            }
            .compare-row {
                grid-template-columns: 180px 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 36px;
            }
        }

        @media (max-width: 768px) {
            .section-block {
                padding: 64px 0;
            }
            .hero-content h1 {
                font-size: 2.15rem;
            }
            .section-title {
                font-size: 1.75rem;
            }
            .main-nav, .header-search {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .rankings-layout, .workflow-grid, .case-grid, .category-grid, .curated-grid, .articles-grid, .scenarios-grid, .assurance-strip {
                grid-template-columns: 1fr;
            }
            .compare-row {
                grid-template-columns: 1fr;
            }
            .compare-cell.feature-name {
                border-right: none;
                border-bottom: 1px solid var(--border-light);
                background: rgba(255, 255, 255, 0.04);
                font-weight: 700;
            }
            .cta-box {
                padding: 40px 24px;
            }
            .cta-box h2 {
                font-size: 1.85rem;
            }
            .hero-stats-row {
                flex-wrap: wrap;
                gap: 20px;
            }
        }

        @media (max-width: 520px) {
            .partners-banner {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .btn {
                width: 100%;
            }
            .hero-action-bar {
                flex-direction: column;
            }
        }