/* roulang page: index */
:root {
            --bg-base: #07080B;
            --bg-surface: #0C0D12;
            --bg-card: #13161F;
            --bg-card-hover: #1A1E2B;
            --primary: #00E599;
            --primary-glow: rgba(0, 229, 153, 0.18);
            --primary-dark: #00B377;
            --secondary: #3B82F6;
            --text-main: #FFFFFF;
            --text-muted: #8E9BAE;
            --text-dim: #5B6678;
            --border-light: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(0, 229, 153, 0.35);
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.45);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            background-color: var(--bg-base);
            color: var(--text-main);
        }

        body {
            font-family: var(--font-family);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }

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

        button, input {
            font-family: inherit;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部状态与导航条 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(12, 13, 18, 0.94);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
        }

        .header-topbar {
            background-color: #050608;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            font-size: 13px;
            color: var(--text-muted);
            padding: 6px 0;
        }

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

        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            background-color: var(--primary);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--primary);
        }

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

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: -0.5px;
            color: var(--text-main);
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            color: #07080B;
        }

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

        .nav-link {
            font-size: 15px;
            color: var(--text-muted);
            position: relative;
            padding: 6px 0;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
            min-height: 44px;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #07080B;
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 16px var(--primary-glow);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-main);
            border-color: var(--border-light);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: rgba(0, 229, 153, 0.05);
        }

        /* 统一 Section 样式 */
        .section-block {
            padding: 88px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .section-block.alt-bg {
            background-color: var(--bg-surface);
        }

        .section-head {
            margin-bottom: 48px;
            max-width: 800px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            color: var(--primary);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 10px;
            background: rgba(0, 229, 153, 0.1);
            padding: 4px 10px;
            border-radius: var(--radius-sm);
        }

        .section-title {
            font-size: 32px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        .section-intro {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 1. Hero 优惠券与接入通道 */
        .hero-banner {
            position: relative;
            padding: 100px 0 80px;
            background-image: linear-gradient(rgba(7, 8, 11, 0.88), rgba(7, 8, 11, 0.95)), url('/assets/images/840a05dec3649319.png');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--border-light);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .hero-h1 {
            font-size: 46px;
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 20px;
            background: linear-gradient(180deg, #FFFFFF 0%, #CCD3DF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .coupon-wall-card {
            background: linear-gradient(145deg, #161925 0%, #10121A 100%);
            border: 1px solid rgba(0, 229, 153, 0.25);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.6);
            position: relative;
            overflow: hidden;
        }

        .coupon-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--primary);
            color: #07080B;
            font-size: 11px;
            font-weight: 700;
            padding: 3px 8px;
            border-radius: 2px;
        }

        .coupon-value {
            font-size: 38px;
            font-weight: 800;
            color: var(--primary);
            margin: 12px 0 6px;
        }

        .coupon-detail {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        /* 2. 产线能力 (6 网格卡片) */
        .grid-3col {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .cap-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .cap-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
            background-color: var(--bg-card-hover);
            box-shadow: var(--shadow-card);
        }

        .cap-icon {
            width: 44px;
            height: 44px;
            background: rgba(0, 229, 153, 0.08);
            color: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 20px;
        }

        .cap-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .cap-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 3. 参数表 */
        .param-table-container {
            background-color: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow-x: auto;
        }

        .param-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 14px;
        }

        .param-table th, .param-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-light);
        }

        .param-table th {
            background-color: rgba(255, 255, 255, 0.02);
            color: var(--text-muted);
            font-weight: 600;
        }

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

        .param-table tr:hover td {
            background-color: rgba(255, 255, 255, 0.015);
        }

        .badge-verified {
            display: inline-block;
            background: rgba(0, 229, 153, 0.15);
            color: var(--primary);
            padding: 2px 8px;
            border-radius: var(--radius-sm);
            font-size: 12px;
            font-weight: 600;
        }

        /* 4. 案例现场 */
        .cases-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .case-img {
            width: 100%;
            height: 240px;
            object-fit: cover;
            border-bottom: 1px solid var(--border-light);
        }

        .case-body {
            padding: 28px;
            flex-grow: 1;
        }

        .case-title {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .case-meta {
            display: flex;
            gap: 16px;
            margin-top: 20px;
            padding-top: 16px;
            border-top: 1px solid var(--border-light);
            font-size: 13px;
            color: var(--primary);
        }

        /* 5. 交付流程 */
        .timeline-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .timeline-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px;
            position: relative;
        }

        .timeline-step-num {
            font-size: 32px;
            font-weight: 800;
            color: rgba(255, 255, 255, 0.1);
            position: absolute;
            top: 16px;
            right: 16px;
        }

        .timeline-title {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .timeline-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 6. 核心产品矩阵（扩板块） */
        .product-matrix {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .product-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            display: flex;
            flex-direction: column;
        }

        .product-card.featured {
            border-color: var(--primary);
            box-shadow: 0 0 24px var(--primary-glow);
        }

        .product-price {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            margin: 16px 0;
        }

        .product-specs {
            list-style: none;
            margin: 20px 0;
            font-size: 14px;
            color: var(--text-muted);
            flex-grow: 1;
        }

        .product-specs li {
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            display: flex;
            justify-content: space-between;
        }

        /* 7. 关键数据指标 */
        .metrics-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            background: linear-gradient(180deg, #10121A 0%, #0A0B0E 100%);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 40px;
            text-align: center;
        }

        .metric-val {
            font-size: 42px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
            letter-spacing: -1px;
        }

        .metric-label {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 8. 资产安全与风控保障（扩板块） */
        .security-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .sec-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .sec-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            padding: 16px 20px;
            border-radius: var(--radius-sm);
        }

        .sec-item h4 {
            font-size: 16px;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .sec-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 9. 客户评价与见证 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 28px;
            position: relative;
        }

        .quote-icon {
            font-size: 28px;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 12px;
        }

        .review-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .reviewer-info {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .reviewer-meta h5 {
            font-size: 14px;
            font-weight: 600;
        }

        .reviewer-meta span {
            font-size: 12px;
            color: var(--text-dim);
        }

        /* 10. 资讯列表 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

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

        .news-content {
            padding: 20px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .news-date {
            font-size: 12px;
            color: var(--text-dim);
            margin-bottom: 8px;
        }

        .news-title {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .news-snippet {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
            flex-grow: 1;
        }

        /* 11. 合作伙伴 */
        .partners-bar {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
            align-items: center;
            text-align: center;
        }

        .partner-box {
            padding: 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 13px;
            font-weight: 600;
        }

        /* 12. 询盘表单 (唯一收口) */
        .inquiry-wrapper {
            background: linear-gradient(135deg, #10131B 0%, #08090C 100%);
            border: 1px solid rgba(0, 229, 153, 0.2);
            border-radius: var(--radius-xl);
            padding: 56px 40px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-control {
            width: 100%;
            padding: 14px 16px;
            background: #171A24;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            color: var(--text-main);
            font-size: 14px;
            outline: none;
            transition: border-color 0.25s ease;
        }

        .form-control:focus {
            border-color: var(--primary);
        }

        .form-notice {
            font-size: 12px;
            color: var(--text-dim);
            margin-top: 12px;
            line-height: 1.5;
        }

        /* 页脚 */
        .site-footer {
            background: #040507;
            border-top: 1px solid var(--border-light);
            padding: 64px 0 32px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-col-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 20px;
        }

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

        .footer-bottom {
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-dim);
        }

        .disclaimer-box {
            margin-top: 24px;
            padding: 16px;
            background: rgba(255, 255, 255, 0.015);
            border-radius: var(--radius-sm);
            font-size: 12px;
            color: var(--text-dim);
            line-height: 1.6;
        }

        /* 移动端菜单控制与响应式 */
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-main);
            font-size: 24px;
            cursor: pointer;
        }

        @media (max-width: 1024px) {
            .hero-grid, .security-layout, .inquiry-wrapper {
                grid-template-columns: 1fr;
            }
            .timeline-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .partners-bar {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .section-block {
                padding: 60px 0;
            }
            .hero-h1 {
                font-size: 32px;
            }
            .section-title {
                font-size: 26px;
            }
            .grid-3col, .cases-grid, .product-matrix, .metrics-strip, .reviews-grid, .news-grid {
                grid-template-columns: 1fr;
            }
            .timeline-steps {
                grid-template-columns: 1fr;
            }
            .partners-bar {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-menu {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .header-topbar {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
        }