/* roulang page: index */
:root {
            --primary: #00E676;
            --primary-hover: #00C853;
            --primary-glow: rgba(0, 230, 118, 0.28);
            --accent: #FF5722;
            --accent-glow: rgba(255, 87, 34, 0.35);
            --dark-bg: #0B0E14;
            --dark-surface: #121824;
            --dark-card: #182030;
            --light-bg: #F4F6FA;
            --light-surface: #FFFFFF;
            --text-main: #121826;
            --text-muted: #5E697D;
            --text-light: #E1E7F0;
            --text-light-muted: #94A3B8;
            --border-light: #E2E8F0;
            --border-dark: rgba(255, 255, 255, 0.08);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --transition: all 0.26s cubic-bezier(0.16, 1, 0.3, 1);
        }

        /* 基础重置 */
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; background-color: var(--dark-bg); }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
            color: var(--text-main);
            background-color: var(--light-bg);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a { text-decoration: none; color: inherit; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, textarea { font-family: inherit; }

        /* 顶部全局运行状态栏 */
        .top-status-bar {
            background-color: #07090D;
            color: var(--text-light-muted);
            font-size: 13px;
            height: 38px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
            position: relative;
            z-index: 1001;
        }
        .status-dot {
            width: 8px;
            height: 8px;
            background-color: var(--primary);
            border-radius: 50%;
            display: inline-block;
            margin-right: 8px;
            box-shadow: 0 0 10px var(--primary);
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0% { transform: scale(0.95); opacity: 0.8; }
            50% { transform: scale(1.2); opacity: 1; }
            100% { transform: scale(0.95); opacity: 0.8; }
        }
        .top-status-bar .quick-links a {
            color: var(--text-light-muted);
            margin-left: 18px;
            font-size: 12px;
        }
        .top-status-bar .quick-links a:hover { color: var(--primary); }

        /* SaaS 命令栏主导航 */
        .saas-nav-wrapper {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 14, 20, 0.92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-dark);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
        }
        .saas-navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            padding: 0 16px;
        }
        .brand-logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: #FFFFFF;
            letter-spacing: -0.3px;
        }
        .logo-symbol {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary) 0%, #00B0FF 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #07090D;
            font-weight: 900;
            font-size: 16px;
            box-shadow: 0 0 15px var(--primary-glow);
        }
        .brand-name-tag {
            color: var(--primary);
            font-size: 13px;
            background: rgba(0, 230, 118, 0.12);
            padding: 2px 7px;
            border-radius: 4px;
            margin-left: 6px;
            border: 1px solid rgba(0, 230, 118, 0.25);
        }
        .nav-menu-list {
            display: flex;
            list-style: none;
            gap: 22px;
            margin: 0;
            padding: 0;
        }
        .nav-menu-list a {
            color: var(--text-light);
            font-size: 14px;
            font-weight: 500;
            padding: 6px 4px;
            position: relative;
        }
        .nav-menu-list a:hover,
        .nav-menu-list a.active {
            color: var(--primary);
        }
        .nav-menu-list a.active::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            box-shadow: 0 0 8px var(--primary);
        }

        /* 搜索框与 CTA */
        .nav-action-zone {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .command-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 20px;
            padding: 6px 14px;
            color: var(--text-light-muted);
            font-size: 13px;
            cursor: pointer;
            transition: var(--transition);
        }
        .command-search:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.25);
        }
        .command-search .kbd-badge {
            background: rgba(255, 255, 255, 0.12);
            color: var(--text-light);
            padding: 1px 6px;
            border-radius: 4px;
            font-size: 11px;
            margin-left: 10px;
            border: 1px solid rgba(255, 255, 255, 0.18);
        }
        .btn-cta-glow {
            background: var(--primary);
            color: #07090D;
            font-weight: 700;
            font-size: 14px;
            padding: 9px 20px;
            border-radius: 20px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: none;
            box-shadow: 0 0 16px var(--primary-glow);
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-cta-glow:hover {
            background: #26FF8F;
            box-shadow: 0 0 24px rgba(0, 230, 118, 0.55);
            transform: translateY(-1px);
            color: #000;
        }

        /* 移动端菜单按钮 */
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #FFF;
            font-size: 24px;
            cursor: pointer;
        }

        /* 统一部件与容器 */
        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section-header {
            margin-bottom: 48px;
            text-align: center;
        }
        .section-header.text-left { text-align: left; }
        .section-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            color: var(--primary);
            background: rgba(0, 230, 118, 0.1);
            border: 1px solid rgba(0, 230, 118, 0.28);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.5px;
            line-height: 1.3;
            margin-bottom: 14px;
            position: relative;
        }
        .section-title::after {
            content: "";
            display: block;
            width: 44px;
            height: 3px;
            background: var(--primary);
            margin: 14px auto 0;
            border-radius: 2px;
        }
        .section-header.text-left .section-title::after {
            margin: 14px 0 0;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 720px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-header.text-left .section-desc { margin: 0; }

        /* 卡片基础系统 */
        .app-card {
            background: var(--light-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            padding: 28px;
            transition: var(--transition);
            position: relative;
            box-shadow: 0 4px 14px rgba(0,0,0,0.03);
            height: 100%;
        }
        .app-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 32px rgba(0, 0, 0, 0.08);
            border-color: rgba(0, 230, 118, 0.4);
        }

        /* 1. Hero 板块：视频官网全宽遮罩风格 */
        .hero-section {
            background-color: var(--dark-bg);
            background-image: linear-gradient(rgba(11, 14, 20, 0.88), rgba(11, 14, 20, 0.94)), url('/assets/images/6a0bb2936b805b26.jpg');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 85px 0 75px;
            color: #FFFFFF;
            overflow: hidden;
            border-bottom: 1px solid var(--border-dark);
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 40px;
            align-items: center;
        }
        .hero-pill {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 87, 34, 0.15);
            border: 1px solid var(--accent);
            color: #FF8A65;
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .hero-title {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.22;
            letter-spacing: -0.8px;
            color: #FFFFFF;
            margin-bottom: 20px;
        }
        .hero-title span {
            color: var(--primary);
            text-shadow: 0 0 20px var(--primary-glow);
        }
        .hero-lead {
            font-size: 16px;
            color: var(--text-light-muted);
            line-height: 1.75;
            margin-bottom: 30px;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 35px;
            flex-wrap: wrap;
        }
        .btn-outline-glow {
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #FFFFFF;
            font-size: 14px;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: 20px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.04);
            cursor: pointer;
        }
        .btn-outline-glow:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 230, 118, 0.06);
        }
        .hero-feature-points {
            display: flex;
            gap: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 22px;
        }
        .feat-item {
            font-size: 13px;
            color: var(--text-light-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .feat-item strong {
            color: var(--text-light);
            font-size: 14px;
        }

        /* 视频大屏拟态展示器 */
        .video-stage-preview {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(0, 230, 118, 0.3);
            box-shadow: 0 20px 45px rgba(0, 0, 0, 0.65), 0 0 30px rgba(0, 230, 118, 0.15);
            background: #000;
        }
        .video-stage-preview img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            display: block;
            filter: brightness(0.85);
            transition: var(--transition);
        }
        .video-stage-preview:hover img {
            filter: brightness(0.95);
            transform: scale(1.02);
        }
        .video-overlay-ui {
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            padding: 18px;
            background: linear-gradient(180deg, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0) 40%, rgba(0,0,0,0.75) 100%);
            pointer-events: none;
        }
        .live-status-pill {
            align-self: flex-start;
            background: rgba(255, 87, 34, 0.9);
            color: #FFF;
            font-size: 11px;
            font-weight: 700;
            padding: 3px 9px;
            border-radius: 4px;
            display: flex;
            align-items: center;
            gap: 5px;
            box-shadow: 0 0 10px var(--accent-glow);
        }
        .play-trigger-btn {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 64px;
            height: 64px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 30px var(--primary-glow);
            pointer-events: auto;
            cursor: pointer;
            transition: var(--transition);
        }
        .play-trigger-btn:hover {
            transform: translate(-50%, -50%) scale(1.1);
            background: #FFF;
        }
        .play-trigger-btn svg {
            width: 26px;
            height: 26px;
            fill: #0B0E14;
            margin-left: 3px;
        }
        .stage-bottom-info {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            color: #FFF;
            font-size: 12px;
        }

        /* 通用 Section 间距 */
        .app-section {
            padding: 70px 0;
            position: relative;
        }
        .section-alt {
            background-color: #FFFFFF;
        }
        .section-dark {
            background-color: var(--dark-bg);
            color: #FFFFFF;
        }
        .section-dark .section-title {
            color: #FFFFFF;
        }
        .section-dark .section-desc {
            color: var(--text-light-muted);
        }

        /* 2. 底层架构解析板块 */
        .engine-topo-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .arch-image-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
            background: #FFF;
        }
        .protocol-specs-list {
            list-style: none;
            margin: 20px 0 0;
            padding: 0;
        }
        .protocol-spec-item {
            background: #FFF;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            padding: 16px 20px;
            margin-bottom: 12px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }
        .protocol-spec-item:hover {
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(0, 230, 118, 0.1);
        }
        .proto-badge {
            background: rgba(0, 230, 118, 0.12);
            color: #00A854;
            font-weight: 700;
            font-size: 13px;
            padding: 4px 10px;
            border-radius: 4px;
        }

        /* 3. 六矩阵优势卡片 */
        .matrix-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: rgba(0, 230, 118, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #00A854;
            font-size: 22px;
            margin-bottom: 18px;
        }
        .matrix-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        .matrix-param-tag {
            display: inline-block;
            margin-top: 14px;
            font-size: 12px;
            color: #00A854;
            background: #E8F9EE;
            padding: 3px 8px;
            border-radius: 4px;
            font-weight: 600;
        }

        /* 4. 解决方案产品包 */
        .solution-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            background: #FFF;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .solution-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 16px 30px rgba(0,0,0,0.08);
            border-color: var(--primary);
        }
        .solution-media {
            height: 190px;
            position: relative;
            overflow: hidden;
        }
        .solution-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .solution-card:hover .solution-media img {
            transform: scale(1.05);
        }
        .solution-tag {
            position: absolute;
            top: 12px;
            right: 12px;
            background: rgba(11, 14, 20, 0.85);
            color: var(--primary);
            font-size: 11px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 4px;
            border: 1px solid rgba(0, 230, 118, 0.4);
        }
        .solution-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .solution-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .solution-specs {
            list-style: none;
            margin: 14px 0 20px;
            padding: 0;
            font-size: 13px;
            color: var(--text-muted);
        }
        .solution-specs li {
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* 5. 深色反差理念对比 */
        .concept-compare-panel {
            background-color: var(--dark-surface);
            background-image: linear-gradient(135deg, rgba(18, 24, 36, 0.95), rgba(7, 9, 13, 0.98)), url('/assets/images/e91036fbf68aa1c9.png');
            background-size: cover;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-dark);
            padding: 40px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.5);
        }
        .compare-col-legacy {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 28px;
        }
        .compare-col-modern {
            background: rgba(0, 230, 118, 0.04);
            border: 1px solid rgba(0, 230, 118, 0.35);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: 0 0 25px rgba(0, 230, 118, 0.08);
        }
        .compare-col-legacy h4 { color: #E57373; font-size: 18px; margin-bottom: 16px; }
        .compare-col-modern h4 { color: var(--primary); font-size: 18px; margin-bottom: 16px; }
        .compare-list {
            list-style: none;
            margin: 0;
            padding: 0;
            font-size: 14px;
        }
        .compare-list li {
            margin-bottom: 12px;
            line-height: 1.6;
        }

        /* 6. 版权方落地故事区 */
        .story-card {
            background: #FFF;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            display: grid;
            grid-template-columns: 0.9fr 1.1fr;
            margin-bottom: 24px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.03);
        }
        .story-img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .story-content-box {
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .story-badge {
            font-size: 12px;
            color: #00A854;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .story-metrics-row {
            display: flex;
            gap: 20px;
            margin-top: 20px;
            border-top: 1px dashed var(--border-light);
            padding-top: 14px;
        }
        .story-m-block strong {
            display: block;
            font-size: 20px;
            color: var(--text-main);
        }
        .story-m-block span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 7. 关键数据仪表条 */
        .metrics-strip {
            background: linear-gradient(135deg, #090C11 0%, #131923 100%);
            border-radius: var(--radius-md);
            border: 1px solid rgba(0, 230, 118, 0.25);
            padding: 38px 24px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.4);
            color: #FFF;
        }
        .metric-cell {
            text-align: center;
            border-right: 1px solid rgba(255, 255, 255, 0.08);
        }
        .metric-cell:last-child { border-right: none; }
        .metric-value {
            font-size: 38px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -1px;
            line-height: 1.1;
            margin-bottom: 6px;
            text-shadow: 0 0 15px var(--primary-glow);
        }
        .metric-label {
            font-size: 13px;
            color: var(--text-light-muted);
        }

        /* 8. 口碑评价卡片 */
        .review-card {
            background: #FFF;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            padding: 26px;
            position: relative;
            box-shadow: 0 4px 12px rgba(0,0,0,0.03);
            height: 100%;
        }
        .review-card .quote-icon {
            font-size: 32px;
            line-height: 1;
            color: rgba(0, 230, 118, 0.2);
            margin-bottom: 10px;
        }
        .review-user-box {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 20px;
        }
        .avatar-placeholder {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: #E8F9EE;
            color: #00A854;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            border: 1px solid rgba(0, 230, 118, 0.3);
        }

        /* 9. 合作伙伴网格 */
        .partner-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
        }
        .partner-cell {
            background: #FFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-muted);
            transition: var(--transition);
            text-align: center;
            padding: 8px;
        }
        .partner-cell:hover {
            border-color: var(--primary);
            color: var(--text-main);
            box-shadow: 0 6px 14px rgba(0, 230, 118, 0.12);
            transform: translateY(-2px);
        }

        /* 10. 资讯文章卡片 */
        .news-card {
            background: #FFF;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
            height: 100%;
        }
        The CSS for the news card is incomplete; will add necessary styles, including padding, box-shadow, and layout details for content display. The design will incorporate responsive adjustments for different screen sizes, ensuring proper visibility and usability. The layout needs to be flexible enough for various article lengths and image sizes.


```css
        .news-card:hover {
            box-shadow: var(--shadow-md);
        }

        .news-card-image {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .news-card-content {
            padding: var(--space-md);
            flex-grow: 1;
        }

        .news-card-title {
            font-size: var(--font-size-lg);
            font-weight: bold;
            margin-bottom: var(--space-sm);
        }

        .news-card-description {
            font-size: var(--font-size-md);
            color: var(--text-color-secondary);
            margin-bottom: var(--space-md);
        }

        .news-card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: var(--font-size-sm);
            color: var(--text-color-tertiary);
        }

        .news-card-date {
            margin-right: var(--space-sm);
        }

        /* Responsive adjustments */
        @media (max-width: 768px) {
            .news-card {
                height: auto; /* Allow height to adjust */
            }

            .news-card-image {
                height: 150px;
            }
        }