/* roulang page: index */
:root {
            --color-primary-dark: #0A0F1D;
            --color-deep-surface: #0E1726;
            --color-accent-cyan: #00F2B6;
            --color-accent-orange: #FF6B00;
            --color-text-main: #1E293B;
            --color-text-muted: #64748B;
            --color-text-light: #F8FAFC;
            --color-bg-light: #F8FAFC;
            --color-bg-white: #FFFFFF;
            --color-border-light: rgba(10, 15, 29, 0.08);
            --color-border-cyan: rgba(0, 242, 182, 0.25);
            --shadow-card: 0 12px 32px -4px rgba(10, 15, 29, 0.06);
            --shadow-glow: 0 0 24px rgba(0, 242, 182, 0.35);
            --radius-card: 20px;
            --radius-btn: 10px;
            --container-max: 1240px;
            --font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
        }

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

        body {
            font-family: var(--font-family);
            background-color: var(--color-bg-light);
            color: var(--color-text-main);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s ease;
        }

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

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

        /* 顶部双行导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 15, 29, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .top-bar {
            background: rgba(0, 0, 0, 0.4);
            font-size: 0.82rem;
            color: #94A3B8;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .top-bar-flex {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .main-nav {
            padding: 16px 0;
        }

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

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--color-text-light);
            letter-spacing: -0.5px;
        }

        .brand-logo-badge {
            background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-orange));
            color: var(--color-primary-dark);
            font-size: 0.75rem;
            font-weight: 900;
            padding: 2px 8px;
            border-radius: 6px;
        }

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

        .nav-links a {
            color: #CBD5E1;
            font-size: 0.95rem;
            font-weight: 500;
        }

        .nav-links a:hover {
            color: var(--color-accent-cyan);
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--color-accent-cyan), #00C896);
            color: var(--color-primary-dark);
            font-weight: 700;
            font-size: 0.95rem;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            box-shadow: 0 4px 14px rgba(0, 242, 182, 0.3);
            border: none;
            cursor: pointer;
        }

        .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.08);
            color: var(--color-text-light);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(8px);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.15);
            color: var(--color-accent-cyan);
            border-color: var(--color-accent-cyan);
        }

        /* 统一 Section 排版 */
        .section-padding {
            padding: 90px 0;
        }

        .section-padding-dark {
            padding: 90px 0;
            background-color: var(--color-primary-dark);
            color: var(--color-text-light);
        }

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

        .section-badge {
            display: inline-block;
            background: rgba(0, 242, 182, 0.1);
            color: #00B386;
            font-size: 0.85rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 30px;
            border: 1px solid rgba(0, 242, 182, 0.25);
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .section-badge-dark {
            background: rgba(0, 242, 182, 0.15);
            color: var(--color-accent-cyan);
            border-color: rgba(0, 242, 182, 0.3);
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            color: inherit;
        }

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

        .section-desc-light {
            color: #94A3B8;
        }

        /* 板块一：Hero 首屏 */
        .hero-banner {
            position: relative;
            background: linear-gradient(rgba(10, 15, 29, 0.88), rgba(10, 15, 29, 0.95)), url('/assets/images/f5a1addd995b43c6.webp') center/cover no-repeat;
            color: var(--color-text-light);
            padding: 100px 0 110px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

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

        .hero-h1 {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.25;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #FFFFFF 40%, var(--color-accent-cyan) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-p {
            font-size: 1.15rem;
            color: #CBD5E1;
            line-height: 1.8;
            margin-bottom: 36px;
        }

        .hero-btn-group {
            display: flex;
            justify-content: center;
            gap: 18px;
            margin-bottom: 40px;
        }

        .hero-countdown-bar {
            display: inline-flex;
            align-items: center;
            gap: 16px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            padding: 10px 24px;
            border-radius: 40px;
            font-size: 0.9rem;
            color: #E2E8F0;
        }

        .countdown-num {
            color: var(--color-accent-orange);
            font-weight: 800;
            font-family: monospace;
            font-size: 1.1rem;
        }

        /* 板块二：行业痛点剖析 */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .pain-card {
            background: var(--color-bg-white);
            border: 1px solid var(--color-border-light);
            padding: 32px 24px;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .pain-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: #EF4444;
        }

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

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

        /* 板块三：架构与全栈解决方案 */
        .arch-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .arch-media {
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-border-cyan);
            box-shadow: 0 16px 40px rgba(0, 242, 182, 0.1);
        }

        .arch-specs {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .spec-item {
            background: var(--color-bg-white);
            padding: 20px 24px;
            border-radius: 14px;
            border: 1px solid var(--color-border-light);
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }

        .spec-dot {
            width: 12px;
            height: 12px;
            background: var(--color-accent-cyan);
            border-radius: 50%;
            margin-top: 6px;
            flex-shrink: 0;
        }

        .spec-content h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .spec-content p {
            font-size: 0.92rem;
            color: var(--color-text-muted);
        }

        /* 板块四：核心优势矩阵 (3x2) */
        .grid-3col {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .matrix-card {
            background: var(--color-bg-white);
            padding: 32px;
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }

        .matrix-card:hover {
            transform: translateY(-5px);
            border-color: var(--color-border-cyan);
            box-shadow: 0 16px 36px rgba(0, 242, 182, 0.12);
        }

        .matrix-icon {
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, rgba(0, 242, 182, 0.15), rgba(255, 107, 0, 0.15));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary-dark);
            font-weight: 900;
            font-size: 1.25rem;
            margin-bottom: 20px;
        }

        .matrix-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

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

        /* 板块五：热门产品与能力中心 */
        .product-card {
            background: var(--color-deep-surface);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-card);
            overflow: hidden;
            color: var(--color-text-light);
        }

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

        .product-card-body {
            padding: 28px;
        }

        .product-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            background: rgba(255, 107, 0, 0.2);
            color: var(--color-accent-orange);
            padding: 3px 10px;
            border-radius: 4px;
            margin-bottom: 14px;
        }

        .product-title {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .product-desc {
            font-size: 0.92rem;
            color: #94A3B8;
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .product-features {
            list-style: none;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 16px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 0.88rem;
            color: #CBD5E1;
        }

        /* 板块六：场景演示与落地成效 */
        .scenario-box {
            background: var(--color-bg-white);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .scenario-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
        }

        .scenario-content {
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .scenario-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }

        .scenario-stat {
            display: flex;
            gap: 24px;
            margin-top: 24px;
            padding-top: 24px;
            border-top: 1px solid var(--color-border-light);
        }

        .stat-item h3 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--color-accent-orange);
        }

        .stat-item p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }

        /* 板块七：关键性能与运营统计条 */
        .counter-strip {
            background: linear-gradient(135deg, #0A0F1D, #1E293B);
            border-radius: var(--radius-card);
            padding: 48px;
            border: 1px solid rgba(0, 242, 182, 0.3);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
            color: var(--color-text-light);
        }

        .counter-val {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--color-accent-cyan);
            font-family: monospace;
            line-height: 1.1;
            margin-bottom: 8px;
        }

        .counter-label {
            font-size: 0.95rem;
            color: #94A3B8;
        }

        /* 板块八：对比差异区 (传统 vs 体育AI中台) */
        .compare-table-wrapper {
            background: var(--color-deep-surface);
            border-radius: var(--radius-card);
            border: 1px solid rgba(255, 255, 255, 0.1);
            overflow: hidden;
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            color: var(--color-text-light);
            text-align: left;
        }

        .compare-table th, .compare-table td {
            padding: 20px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.95rem;
        }

        .compare-table th {
            background: rgba(255, 255, 255, 0.03);
            font-weight: 700;
            color: #94A3B8;
        }

        .compare-table tr:last-child td {
            border-bottom: none;
        }

        .highlight-col {
            background: rgba(0, 242, 182, 0.05);
            color: var(--color-accent-cyan);
            font-weight: 600;
        }

        /* 板块九：行业资讯与算法动态 */
        .news-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border-light);
            padding: 28px;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-date {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-bottom: 10px;
        }

        .news-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--color-primary-dark);
        }

        .news-desc {
            font-size: 0.92rem;
            color: var(--color-text-muted);
            margin-bottom: 16px;
            line-height: 1.6;
        }

        .news-link {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--color-accent-orange);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 板块十：套餐与部署模式对比 */
        .tier-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border-light);
            padding: 36px 28px;
            text-align: center;
            position: relative;
            box-shadow: var(--shadow-card);
        }

        .tier-card.featured {
            border-color: var(--color-accent-cyan);
            box-shadow: 0 16px 40px rgba(0, 242, 182, 0.15);
            transform: scale(1.03);
        }

        .tier-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--color-accent-orange);
            color: #FFFFFF;
            font-size: 0.75rem;
            font-weight: 800;
            padding: 4px 14px;
            border-radius: 20px;
        }

        .tier-name {
            font-size: 1.35rem;
            font-weight: 800;
            margin-bottom: 10px;
        }

        .tier-desc {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-bottom: 24px;
        }

        .tier-specs-list {
            list-style: none;
            text-align: left;
            margin-bottom: 28px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            font-size: 0.92rem;
            color: var(--color-text-main);
        }

        /* 板块十一：权威合规与安全保障条 */
        .trust-bar {
            background: #FFFFFF;
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-card);
            padding: 32px 40px;
            display: flex;
            justify-content: space-around;
            align-items: center;
            flex-wrap: wrap;
            gap: 24px;
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--color-primary-dark);
        }

        .trust-icon {
            width: 32px;
            height: 32px;
            background: rgba(0, 242, 182, 0.15);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent-cyan);
            font-weight: 900;
        }

        /* 板块十二：白皮书留资与架构师预约转化区 */
        .final-cta-card {
            background: linear-gradient(135deg, #0A0F1D 0%, #1E293B 100%);
            border-radius: var(--radius-card);
            padding: 60px;
            border: 1px solid rgba(0, 242, 182, 0.3);
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 48px;
            align-items: center;
            color: var(--color-text-light);
        }

        .cta-form {
            background: rgba(255, 255, 255, 0.05);
            padding: 32px;
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-label {
            display: block;
            font-size: 0.85rem;
            color: #CBD5E1;
            margin-bottom: 6px;
        }

        .form-input {
            width: 100%;
            padding: 12px 16px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 8px;
            color: #FFFFFF;
            font-size: 0.95rem;
            outline: none;
        }

        .form-input:focus {
            border-color: var(--color-accent-cyan);
            background: rgba(255, 255, 255, 0.12);
        }

        /* 底部固定转化条 */
        .sticky-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: rgba(10, 15, 29, 0.95);
            backdrop-filter: blur(10px);
            border-top: 1px solid var(--color-border-cyan);
            padding: 12px 24px;
            z-index: 999;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.2);
        }

        .sticky-bar-flex {
            max-width: var(--container-max);
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .sticky-info {
            color: var(--color-text-light);
            font-size: 0.95rem;
        }

        .sticky-info span {
            color: var(--color-accent-cyan);
            font-weight: 700;
        }

        /* 页脚规范 */
        .site-footer {
            background: #060913;
            color: #94A3B8;
            padding: 60px 0 100px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.88rem;
        }

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

        .footer-brand h4 {
            color: #FFFFFF;
            font-size: 1.25rem;
            margin-bottom: 14px;
            font-weight: 800;
        }

        .footer-col h5 {
            color: #FFFFFF;
            font-size: 1rem;
            margin-bottom: 16px;
            font-weight: 700;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col a:hover {
            color: var(--color-accent-cyan);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            text-align: center;
            line-height: 1.8;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .pain-grid, .grid-3col {
                grid-template-columns: repeat(2, 1fr);
            }
            .counter-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .final-cta-card {
                grid-template-columns: 1fr;
                padding: 40px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links, .top-bar {
                display: none;
            }
            .hero-h1 {
                font-size: 2.2rem;
            }
            .arch-wrapper, .scenario-grid, .pain-grid, .grid-3col {
                grid-template-columns: 1fr;
            }
            .section-padding, .section-padding-dark {
                padding: 60px 0;
            }
            .counter-strip {
                grid-template-columns: 1fr;
                padding: 30px 20px;
            }
            .hero-btn-group {
                flex-direction: column;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .sticky-bar-flex {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }
        }