/* roulang page: index */
:root {
            --brand-primary: #4F46E5;
            --brand-secondary: #06B6D4;
            --brand-accent: #10B981;
            --brand-cta: #F97316;
            --text-main: #0F172A;
            --text-muted: #64748B;
            --bg-light: #F8FAFC;
            --bg-white: #FFFFFF;
            --bg-dark: #0B0F19;
            --bg-card-dark: #161F30;
            --border-light: #E2E8F0;
            --border-dark: #26334D;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-subtle: 0 10px 30px -5px rgba(0, 0, 0, 0.05);
            --shadow-hover: 0 20px 35px -5px rgba(79, 70, 229, 0.16);
            --container-max: 1280px;
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-white);
            color: var(--text-main);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
            width: 100%;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, opacity 0.2s ease;
        }

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

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* 顶部状态条与导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
        }

        .top-bar {
            background: var(--bg-dark);
            color: #94A3B8;
            font-size: 13px;
            padding: 8px 0;
            border-bottom: 1px solid var(--border-dark);
        }

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

        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: #E2E8F0;
        }

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

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

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

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.5px;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 900;
            font-size: 18px;
        }

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

        .nav-link {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-muted);
            padding: 8px 0;
            position: relative;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            border-radius: 9999px;
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            border: none;
            text-align: center;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
            color: #fff;
            box-shadow: 0 8px 20px rgba(79, 70, 229, 0.25);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 25px rgba(79, 70, 229, 0.35);
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.3);
            backdrop-filter: blur(8px);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.25);
            transform: translateY(-2px);
        }

        .btn-cta {
            background: linear-gradient(135deg, var(--brand-cta), #EA580C);
            color: #fff;
            box-shadow: 0 8px 20px rgba(249, 115, 22, 0.3);
        }

        .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 25px rgba(249, 115, 22, 0.4);
        }

        /* 基础 Section 结构 */
        .section-block {
            padding: 90px 0;
            position: relative;
        }

        .section-light {
            background-color: var(--bg-white);
        }

        .section-gray {
            background-color: var(--bg-light);
        }

        .section-dark {
            background-color: var(--bg-dark);
            color: #F8FAFC;
        }

        .section-header {
            text-align: center;
            max-width: 820px;
            margin: 0 auto 56px auto;
        }

        .badge-pill {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 9999px;
            font-size: 13px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
        }

        .badge-pill-light {
            background: rgba(79, 70, 229, 0.08);
            color: var(--brand-primary);
        }

        .badge-pill-dark {
            background: rgba(6, 182, 212, 0.15);
            color: var(--brand-secondary);
            border: 1px solid rgba(6, 182, 212, 0.3);
        }

        .section-title {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }

        .section-dark .section-title {
            color: #FFFFFF;
        }

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

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

        /* 板块 1: Hero 首屏 */
        .hero-section {
            position: relative;
            background: #0B0F19 url('/assets/images/3da9d3310a58de64.jpg') center center / cover no-repeat;
            color: #FFFFFF;
            padding: 120px 0 100px 0;
            overflow: hidden;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 15, 25, 0.88) 0%, rgba(11, 15, 25, 0.96) 100%);
            z-index: 1;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 44px;
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -1px;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #FFFFFF 40%, #A5F3FC 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-intro {
            font-size: 17px;
            line-height: 1.8;
            color: #CBD5E1;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }

        .live-countdown-card {
            background: rgba(22, 31, 48, 0.85);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-lg);
            padding: 32px;
            backdrop-filter: blur(16px);
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
        }

        .countdown-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .countdown-title {
            font-size: 17px;
            font-weight: 700;
            color: #F8FAFC;
        }

        .countdown-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 12px;
            margin-bottom: 24px;
            text-align: center;
        }

        .countdown-box {
            background: rgba(15, 23, 42, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-md);
            padding: 12px 6px;
        }

        .countdown-num {
            font-size: 26px;
            font-weight: 800;
            color: var(--brand-secondary);
            line-height: 1;
            margin-bottom: 6px;
            font-family: monospace;
        }

        .countdown-label {
            font-size: 11px;
            color: #64748B;
            text-transform: uppercase;
        }

        /* 板块 2: 技术架构与标准 */
        .tech-showcase-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .tech-img-box {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-subtle);
            border: 1px solid var(--border-light);
        }

        .tech-points {
            list-style: none;
            margin-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .tech-point-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text-main);
        }

        .point-dot {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(79, 70, 229, 0.1);
            color: var(--brand-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 12px;
            flex-shrink: 0;
            margin-top: 2px;
        }

        /* 板块 3: 核心优势六宫格 */
        .grid-3x2 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .card-feature {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-subtle);
        }

        .card-feature:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(79, 70, 229, 0.3);
        }

        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(6, 182, 212, 0.1));
            color: var(--brand-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 20px;
        }

        .card-tag {
            font-size: 12px;
            font-weight: 700;
            color: var(--brand-secondary);
            margin-bottom: 8px;
            display: block;
        }

        .card-title {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }

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

        /* 板块 4: 产品纵向特色卡 */
        .product-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .product-card {
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-light);
            overflow: hidden;
            box-shadow: var(--shadow-subtle);
            display: flex;
            flex-direction: column;
            transition: transform 0.3s ease;
        }

        .product-card:hover {
            transform: translateY(-6px);
        }

        .product-card-img {
            height: 200px;
            overflow: hidden;
        }

        .product-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .product-card:hover .product-card-img img {
            transform: scale(1.05);
        }

        .product-card-body {
            padding: 30px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .product-meta-stat {
            margin-top: auto;
            padding-top: 20px;
            border-top: 1px dashed var(--border-light);
            display: flex;
            justify-content: space-between;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-primary);
        }

        /* 板块 5: 极端场景化解（深色） */
        .scenario-box {
            background: var(--bg-card-dark);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-xl);
            padding: 40px;
            margin-top: 32px;
        }

        .scenario-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .scenario-item {
            border-left: 3px solid var(--brand-secondary);
            padding-left: 20px;
        }

        .scenario-item h4 {
            font-size: 18px;
            color: #F8FAFC;
            margin-bottom: 8px;
        }

        .scenario-item p {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.6;
        }

        /* 板块 6: 全球发行案例 */
        .case-study-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-xl);
            padding: 48px;
            box-shadow: var(--shadow-subtle);
        }

        .case-data-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 24px;
        }

        .case-data-table th, .case-data-table td {
            padding: 14px 16px;
            text-align: left;
            font-size: 14px;
            border-bottom: 1px solid var(--border-light);
        }

        .case-data-table th {
            color: var(--text-muted);
            font-weight: 600;
        }

        .case-data-table td:last-child {
            color: var(--brand-accent);
            font-weight: 700;
        }

        /* 板块 7: 关键性能数据 */
        .stats-strip {
            background: linear-gradient(135deg, #1E1B4B 0%, #0F172A 100%);
            border-radius: var(--radius-xl);
            padding: 60px 40px;
            color: #fff;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
        }

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

        .stat-number {
            font-size: 44px;
            font-weight: 900;
            color: var(--brand-secondary);
            line-height: 1.1;
            margin-bottom: 8px;
            font-family: monospace;
        }

        .stat-desc {
            font-size: 14px;
            color: #CBD5E1;
        }

        /* 板块 8: 行业评价 */
        .quote-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .quote-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            box-shadow: var(--shadow-subtle);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .quote-body {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 24px;
            position: relative;
        }

        .quote-author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-light);
            padding-top: 16px;
        }

        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: #E2E8F0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--brand-primary);
        }

        .author-info h5 {
            font-size: 15px;
            color: var(--text-main);
        }

        .author-info span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 板块 9: 资讯与动态 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .news-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-subtle);
            display: flex;
            flex-direction: column;
        }

        .news-date {
            font-size: 12px;
            font-weight: 600;
            color: var(--brand-primary);
            margin-bottom: 12px;
        }

        .news-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .news-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .news-link {
            margin-top: auto;
            font-size: 13px;
            font-weight: 700;
            color: var(--brand-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 板块 10: FAQ 手风琴 */
        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            background: var(--bg-white);
            overflow: hidden;
            box-shadow: var(--shadow-subtle);
        }

        .faq-question {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question::after {
            content: '+';
            font-size: 20px;
            font-weight: 400;
            color: var(--brand-primary);
            transition: transform 0.25s ease;
        }

        .faq-item.active .faq-question::after {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            background: #FAFAFA;
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
            transition: max-height 0.3s ease-in-out;
        }

        .faq-answer p {
            padding: 0 24px 20px 24px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 板块 11: 安全合规条 */
        .compliance-bar {
            background: #F1F5F9;
            border-radius: var(--radius-lg);
            padding: 32px 40px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 24px;
        }

        .compliance-item {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .compliance-icon {
            width: 40px;
            height: 40px;
            background: #FFFFFF;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: var(--brand-primary);
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
        }

        .compliance-text h5 {
            font-size: 15px;
            color: var(--text-main);
        }

        .compliance-text p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 板块 12: 转化表单 */
        .cta-box-gradient {
            background: linear-gradient(135deg, #312E81 0%, #0F172A 100%);
            border-radius: var(--radius-xl);
            padding: 64px 48px;
            color: #fff;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
            box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.4);
        }

        .cta-info h3 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .cta-info p {
            font-size: 15px;
            color: #CBD5E1;
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .form-contact {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: 32px;
            backdrop-filter: blur(10px);
        }

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

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: #E2E8F0;
            margin-bottom: 6px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(15, 23, 42, 0.6);
            color: #FFFFFF;
            font-size: 14px;
            outline: none;
            transition: border-color 0.2s ease;
        }

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

        /* 页脚 */
        .site-footer {
            background: #060911;
            color: #94A3B8;
            padding: 80px 0 32px 0;
            border-top: 1px solid var(--border-dark);
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 48px;
            margin-bottom: 60px;
        }

        .footer-brand h4 {
            font-size: 20px;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 16px;
        }

        .footer-brand p {
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .footer-col h5 {
            font-size: 16px;
            font-weight: 700;
            color: #F8FAFC;
            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 rgba(255, 255, 255, 0.08);
            text-align: center;
            font-size: 13px;
            color: #64748B;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .grid-3x2, .product-cards-grid, .quote-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-inner, .tech-showcase-grid, .case-study-split, .cta-box-gradient {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }
            .top-bar {
                display: none;
            }
            .grid-3x2, .product-cards-grid, .quote-grid, .news-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .hero-content h1 {
                font-size: 32px;
            }
            .section-title {
                font-size: 26px;
            }
            .compliance-bar {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .case-study-split, .cta-box-gradient {
                padding: 32px 20px;
            }
        }