/* roulang page: index */
:root {
            --primary: #0f172a;
            --primary-accent: #2563eb;
            --primary-light: #3b82f6;
            --accent-orange: #f97316;
            --dark-surface: #0b0f19;
            --dark-card: #131b2e;
            --light-bg: #f8fafc;
            --card-bg: #ffffff;
            --text-main: #0f172a;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border-light: #e2e8f0;
            --border-dark: #1e293b;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 12px 32px -4px rgba(15, 23, 42, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--light-bg);
            color: var(--text-main);
            line-height: 1.65;
            overflow-x: hidden;
        }

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

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

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            z-index: 1000;
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
            transition: var(--transition);
        }

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

        .logo-box {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.5px;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary-accent), #1d4ed8);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
        }

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

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            cursor: pointer;
            border: 1px solid transparent;
        }

        .btn-primary {
            background-color: var(--primary-accent);
            color: #ffffff;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
        }

        .btn-primary:hover {
            background-color: #1d4ed8;
            transform: translateY(-1px);
        }

        .btn-secondary {
            background-color: #ffffff;
            color: var(--text-main);
            border-color: var(--border-light);
        }

        .btn-secondary:hover {
            background-color: #f1f5f9;
            border-color: #cbd5e1;
        }

        .btn-outline-white {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.2);
            color: #fff;
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.18);
        }

        /* 统一 Section 基础 */
        section {
            padding: 88px 0;
            position: relative;
        }

        .section-header {
            max-width: 760px;
            margin: 0 auto 56px auto;
            text-align: center;
        }

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

        .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 99px;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
        }

        .badge-blue {
            background: rgba(37, 99, 235, 0.1);
            color: var(--primary-accent);
        }

        .badge-orange {
            background: rgba(249, 115, 22, 0.1);
            color: var(--accent-orange);
        }

        .badge-dark {
            background: rgba(255, 255, 255, 0.1);
            color: #93c5fd;
        }

        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 1. Hero 活动 KV 沉浸区 */
        .hero-section {
            padding: 150px 0 90px 0;
            background-color: #030712;
            background-image: linear-gradient(180deg, rgba(3, 7, 18, 0.8) 0%, rgba(3, 7, 18, 0.95) 100%), url('/assets/images/3f174d13c5022207.webp');
            background-size: cover;
            background-position: center;
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }

        .hero-banner-strip {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 6px 16px;
            border-radius: 99px;
            font-size: 0.88rem;
            margin-bottom: 24px;
        }

        .hero-title {
            font-size: 3.25rem;
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 22px;
            letter-spacing: -1px;
            max-width: 900px;
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-light);
            max-width: 780px;
            line-height: 1.8;
            margin-bottom: 36px;
        }

        .hero-ctas {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        .hero-countdown-bar {
            background: rgba(19, 27, 46, 0.85);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 28px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 860px;
            backdrop-filter: blur(10px);
        }

        .countdown-info {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .countdown-numbers {
            display: flex;
            gap: 12px;
        }

        .count-block {
            background: rgba(0, 0, 0, 0.4);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            text-align: center;
            min-width: 54px;
        }

        .count-num {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-orange);
            font-variant-numeric: tabular-nums;
        }

        .count-unit {
            font-size: 0.7rem;
            color: var(--text-light);
        }

        /* 2. 问题陈述/痛点区 */
        .pain-section {
            background-color: #ffffff;
            border-bottom: 1px solid var(--border-light);
        }

        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .pain-card {
            background: #fff;
            border: 1px solid #fee2e2;
            border-radius: var(--radius-md);
            padding: 32px;
            transition: var(--transition);
            position: relative;
            box-shadow: var(--shadow-sm);
        }

        .pain-card:hover {
            border-color: #fca5a5;
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .pain-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: #fef2f2;
            color: #dc2626;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            margin-bottom: 20px;
        }

        .pain-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .pain-text {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* 3. 系统体系架构介绍区 */
        .system-section {
            background-color: #f8fafc;
        }

        .system-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .system-media {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-light);
        }

        .system-metrics-pill {
            position: absolute;
            bottom: 20px;
            left: 20px;
            right: 20px;
            background: rgba(15, 23, 42, 0.9);
            backdrop-filter: blur(8px);
            padding: 16px 20px;
            border-radius: var(--radius-md);
            color: #fff;
            display: flex;
            justify-content: space-around;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .metric-mini-val {
            font-size: 1.2rem;
            font-weight: 700;
            color: #60a5fa;
        }

        .metric-mini-lbl {
            font-size: 0.75rem;
            color: var(--text-light);
        }

        .system-points {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .sys-point-item {
            display: flex;
            gap: 16px;
            background: #fff;
            padding: 18px 22px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
        }

        .sys-point-icon {
            font-size: 1.25rem;
            color: var(--primary-accent);
            margin-top: 2px;
        }

        /* 4. 全链路核心优势/功能网格 */
        .features-section {
            background-color: #ffffff;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            background: #ffffff;
            transition: var(--transition);
        }

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

        .feature-icon-wrapper {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: #eff6ff;
            color: var(--primary-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.35rem;
            margin-bottom: 20px;
        }

        .feature-card-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .feature-tag-mini {
            display: inline-block;
            font-size: 0.75rem;
            background: #f1f5f9;
            color: #475569;
            padding: 2px 8px;
            border-radius: 4px;
            margin-bottom: 12px;
            font-weight: 600;
        }

        /* 5. 常见卡住点与对比 */
        .contrast-section {
            background-color: #f1f5f9;
        }

        .contrast-table-box {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
        }

        .contrast-row {
            display: grid;
            grid-template-columns: 2fr 3fr 3fr;
            padding: 20px 28px;
            border-bottom: 1px solid var(--border-light);
            align-items: center;
        }

        .contrast-row.header {
            background: #0f172a;
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
        }

        .contrast-row:last-child {
            border-bottom: none;
        }

        .contrast-dim {
            font-weight: 600;
            color: var(--text-main);
        }

        .contrast-trad {
            color: #ef4444;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.92rem;
        }

        .contrast-our {
            color: #16a34a;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.92rem;
            font-weight: 600;
        }

        /* 6. 工作流与步骤区 */
        .workflow-section {
            background-color: #ffffff;
        }

        .workflow-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .workflow-card {
            background: #f8fafc;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            position: relative;
        }

        .workflow-step-num {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-accent);
            color: #fff;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .workflow-step-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        /* 7. 深色高对比度赛事指挥舱区 */
        .command-section {
            background-color: var(--dark-surface);
            color: #ffffff;
            padding: 100px 0;
            border-top: 1px solid var(--border-dark);
            border-bottom: 1px solid var(--border-dark);
        }

        .command-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .command-mockup {
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(0,0,0,0.5);
        }

        .command-features-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-top: 28px;
        }

        .cmd-item {
            display: flex;
            gap: 16px;
        }

        .cmd-item-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: rgba(37, 99, 235, 0.2);
            color: #60a5fa;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        /* 8. 版本推荐与矩阵 */
        .pricing-section {
            background-color: #f8fafc;
        }

        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            align-items: stretch;
        }

        .price-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: var(--transition);
        }

        .price-card.highlighted {
            border-color: var(--primary-accent);
            box-shadow: var(--shadow-lg);
            position: relative;
            transform: scale(1.02);
        }

        .price-badge-top {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary-accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 99px;
        }

        .price-features-list {
            list-style: none;
            margin: 28px 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .price-features-list li {
            font-size: 0.92rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .price-features-list li i {
            color: #16a34a;
        }

        /* 9. 奖励预览与积分激励 */
        .rewards-section {
            background: #ffffff;
        }

        .rewards-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .reward-card {
            background: #f8fafc;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
        }

        .reward-card img {
            border-radius: var(--radius-sm);
            margin-bottom: 16px;
            height: 140px;
            width: 100%;
            object-fit: cover;
        }

        /* 10. 用户故事与社会认同 */
        .stories-section {
            background-color: #f1f5f9;
        }

        .stories-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .story-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }

        .story-header {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 16px;
        }

        .story-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: #e2e8f0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary-accent);
        }

        /* 11. 资讯动态 */
        .news-section {
            background: #ffffff;
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .news-card {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }

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

        .news-card img {
            height: 180px;
            width: 100%;
            object-fit: cover;
        }

        .news-content {
            padding: 22px;
        }

        .news-date {
            font-size: 0.8rem;
            color: var(--text-light);
            margin-bottom: 8px;
        }

        .news-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        /* 12. 关键性能数据条 */
        .metrics-bar-section {
            background-color: #0f172a;
            color: #ffffff;
            padding: 60px 0;
        }

        .metrics-bar-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .metric-big-num {
            font-size: 2.75rem;
            font-weight: 800;
            color: #38bdf8;
            margin-bottom: 6px;
            font-variant-numeric: tabular-nums;
        }

        .metric-big-lbl {
            font-size: 0.95rem;
            color: var(--text-light);
        }

        /* 13. 试用与收口行动区 */
        .cta-section {
            background: linear-gradient(135deg, #1e3a8a 0%, #0f172a 100%);
            color: #ffffff;
            padding: 80px 0;
            text-align: center;
        }

        .cta-box {
            max-width: 800px;
            margin: 0 auto;
        }

        .cta-title {
            font-size: 2.25rem;
            font-weight: 800;
            margin-bottom: 18px;
        }

        .cta-desc {
            font-size: 1.1rem;
            color: #bfdbfe;
            margin-bottom: 36px;
            line-height: 1.7;
        }

        /* 页脚 */
        .site-footer {
            background: #090d16;
            color: var(--text-light);
            padding: 64px 0 32px 0;
            border-top: 1px solid #1e293b;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-col-title {
            color: #ffffff;
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 20px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a:hover {
            color: #ffffff;
        }

        .footer-bottom {
            padding-top: 32px;
            border-top: 1px solid #1e293b;
            text-align: center;
            font-size: 0.82rem;
            color: #64748b;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-title { font-size: 2.5rem; }
            .pain-grid, .features-grid, .pricing-grid, .stories-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .workflow-timeline, .rewards-grid, .metrics-bar-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .system-grid, .command-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links { display: none; }
            .hero-title { font-size: 2rem; }
            .section-title { font-size: 1.75rem; }
            .pain-grid, .features-grid, .pricing-grid, .stories-grid, .news-grid, .workflow-timeline, .rewards-grid, .metrics-bar-grid {
                grid-template-columns: 1fr;
            }
            .hero-countdown-bar {
                flex-direction: column;
                gap: 16px;
                align-items: flex-start;
            }
            .contrast-row {
                grid-template-columns: 1fr;
                gap: 8px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }