/* roulang page: index */
:root {
            --primary: #1E40AF;
            --primary-hover: #1D4ED8;
            --primary-dark: #0F172A;
            --secondary: #0284C7;
            --accent-cyan: #38BDF8;
            --bg-light: #F8FAFC;
            --bg-alt: #F1F5F9;
            --text-main: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
            --card-radius: 14px;
            --card-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
            --card-shadow-hover: 0 16px 32px -4px rgba(15, 23, 42, 0.12);
            --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        /* 基础全局重置 */
        *, *::before, *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: #FFFFFF;
            color: var(--text-body);
            line-height: 1.7;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-main);
            font-weight: 700;
            line-height: 1.35;
        }

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

        a:hover {
            color: var(--primary-hover);
        }

        /* 双行导航布局（招投标/公告式导航体系） */
        .header-wrapper {
            position: sticky;
            top: 0;
            z-index: 1030;
            background-color: #FFFFFF;
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.06);
        }

        .top-notice-bar {
            background-color: #F8FAFC;
            border-bottom: 1px solid var(--border-color);
            padding: 7px 0;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .pulse-chip {
            display: inline-flex;
            align-items: center;
            background: rgba(2, 132, 199, 0.1);
            color: var(--secondary);
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 999px;
            font-size: 0.78rem;
            margin-right: 10px;
        }

        .pulse-dot {
            width: 7px;
            height: 7px;
            background-color: #10B981;
            border-radius: 50%;
            margin-right: 6px;
            box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
            animation: pulse-green 2s infinite;
        }

        @keyframes pulse-green {
            0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
            70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
            100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
        }

        .main-navbar {
            padding: 14px 0;
            background-color: #FFFFFF;
        }

        .navbar-brand-custom {
            display: flex;
            align-items: center;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.5px;
        }

        .navbar-brand-custom .brand-icon-box {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #FFFFFF;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 12px;
            font-size: 1.2rem;
            box-shadow: 0 4px 10px rgba(30, 64, 175, 0.25);
        }

        .nav-link-custom {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-body) !important;
            padding: 8px 16px !important;
            border-radius: 8px;
            transition: var(--transition-smooth);
        }

        .nav-link-custom:hover {
            color: var(--primary) !important;
            background-color: var(--bg-alt);
        }

        .btn-brand-primary {
            background: linear-gradient(135deg, var(--primary), #2563EB);
            color: #FFFFFF !important;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: 8px;
            border: none;
            box-shadow: 0 4px 14px rgba(30, 64, 175, 0.28);
            transition: var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-brand-primary:hover {
            background: linear-gradient(135deg, #1D4ED8, #1E40AF);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(30, 64, 175, 0.35);
        }

        .btn-brand-outline {
            border: 1.5px solid #CBD5E1;
            background-color: #FFFFFF;
            color: var(--text-main);
            font-weight: 600;
            padding: 9px 22px;
            border-radius: 8px;
            transition: var(--transition-smooth);
        }

        .btn-brand-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: #F8FAFC;
            transform: translateY(-2px);
        }

        /* 统一通用板块间距 */
        .section-padding {
            padding: 90px 0;
            position: relative;
        }

        .section-header {
            margin-bottom: 54px;
        }

        .section-badge {
            display: inline-block;
            background-color: rgba(2, 132, 199, 0.08);
            color: var(--secondary);
            font-size: 0.85rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-title {
            font-size: 2.15rem;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .section-lead {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 760px;
            margin: 0 auto;
        }

        /* 卡片基础设计 */
        .custom-card {
            background-color: #FFFFFF;
            border-radius: var(--card-radius);
            border: 1px solid var(--border-color);
            box-shadow: var(--card-shadow);
            transition: var(--transition-smooth);
            height: 100%;
        }

        .custom-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--card-shadow-hover);
            border-color: #CBD5E1;
        }

        /* 1. Hero 轮播区域定制 */
        .hero-section {
            background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
            padding: 60px 0 80px;
            position: relative;
        }

        .hero-banner-card {
            background-color: #FFFFFF;
            border-radius: 20px;
            border: 1px solid rgba(226, 232, 240, 0.8);
            box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
            overflow: hidden;
            padding: 40px;
        }

        .hero-visual-frame {
            position: relative;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 15px 35px rgba(15, 23, 42, 0.12);
            border: 1px solid var(--border-color);
        }

        .hero-visual-frame img {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
        }

        /* 2. 系统架构区 */
        .metric-badge-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-top: 24px;
        }

        .metric-mini-card {
            background-color: var(--bg-alt);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 16px;
        }

        .metric-mini-val {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }

        .metric-mini-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* 3. 核心优势六卡片 */
        .advantage-icon-box {
            width: 52px;
            height: 52px;
            background: rgba(30, 64, 175, 0.08);
            color: var(--primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 20px;
            transition: var(--transition-smooth);
        }

        .custom-card:hover .advantage-icon-box {
            background: var(--primary);
            color: #FFFFFF;
        }

        /* 4. 热门功能模块卡片 */
        .module-card {
            border-top: 4px solid var(--primary);
            position: relative;
        }

        .module-card.accent-cyan {
            border-top-color: var(--secondary);
        }

        .module-card.accent-indigo {
            border-top-color: #6366F1;
        }

        .feature-check-list {
            list-style: none;
            padding: 0;
            margin: 20px 0 24px;
        }

        .feature-check-list li {
            padding: 6px 0;
            font-size: 0.92rem;
            color: var(--text-body);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .feature-check-list li i {
            color: #10B981;
            font-size: 0.9rem;
        }

        /* 5. 流程步骤条 */
        .step-node {
            position: relative;
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px 20px;
            box-shadow: var(--card-shadow);
            height: 100%;
        }

        .step-number {
            font-size: 1.6rem;
            font-weight: 900;
            color: var(--secondary);
            opacity: 0.9;
            margin-bottom: 8px;
        }

        /* 6. 高可用深色底座体验区 */
        .deep-dark-section {
            background-color: var(--primary-dark);
            color: #F8FAFC;
        }

        .deep-dark-section h2, .deep-dark-section h3 {
            color: #FFFFFF;
        }

        .terminal-mockup {
            background-color: #030712;
            border: 1px solid #1E293B;
            border-radius: 12px;
            padding: 20px;
            font-family: "JetBrains Mono", Consolas, monospace;
            font-size: 0.88rem;
            color: #94A3B8;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }

        .terminal-header {
            display: flex;
            gap: 6px;
            margin-bottom: 14px;
        }

        .dot-circle {
            width: 10px;
            height: 10px;
            border-radius: 50%;
        }

        .dot-red { background-color: #EF4444; }
        .dot-yellow { background-color: #F59E0B; }
        .dot-green { background-color: #10B981; }

        .terminal-code {
            line-height: 1.6;
        }

        .terminal-code .kw { color: #38BDF8; font-weight: 600; }
        .terminal-code .fn { color: #FBBF24; }
        .terminal-code .str { color: #34D399; }
        .terminal-code .cmt { color: #64748B; font-style: italic; }

        /* 7. 典型场景卡 */
        .scenario-tag {
            font-size: 0.78rem;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 6px;
            display: inline-block;
            margin-bottom: 12px;
        }

        .tag-mmo { background: #FEF3C7; color: #D97706; }
        .tag-casual { background: #E0E7FF; color: #4F46E5; }
        .tag-global { background: #D1FAE5; color: #059669; }

        /* 8. 效能数据条 */
        .data-metrics-banner {
            background: linear-gradient(135deg, #0F52BA 0%, #1E40AF 100%);
            color: #FFFFFF;
            padding: 60px 0;
        }

        .metric-display-val {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1;
            margin-bottom: 8px;
            letter-spacing: -1px;
            color: #FFFFFF;
        }

        .metric-display-desc {
            font-size: 0.95rem;
            color: #E2E8F0;
        }

        /* 9. 研运团队评价 */
        .quote-icon {
            font-size: 1.8rem;
            color: #CBD5E1;
            margin-bottom: 14px;
        }

        .rating-stars {
            color: #F59E0B;
            font-size: 0.85rem;
            margin-bottom: 10px;
        }

        /* 10. 合规矩阵 */
        .compliance-icon-box {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: rgba(16, 185, 129, 0.1);
            color: #10B981;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 14px;
        }

        /* 12. 合作伙伴墙 */
        .partner-logo-item {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.92rem;
            font-weight: 700;
            color: var(--text-muted);
            box-shadow: 0 2px 8px rgba(15, 23, 42, 0.03);
            transition: var(--transition-smooth);
        }

        .partner-logo-item:hover {
            color: var(--primary);
            border-color: #CBD5E1;
            transform: translateY(-2px);
        }

        /* 13. FAQ 手风琴分离样式 */
        .accordion-custom .accordion-item {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px !important;
            margin-bottom: 16px;
            box-shadow: 0 2px 10px rgba(15, 23, 42, 0.04);
            overflow: hidden;
        }

        .accordion-custom .accordion-button {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            padding: 20px 24px;
            background-color: #FFFFFF;
            box-shadow: none;
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--primary);
            background-color: #F8FAFC;
        }

        .accordion-custom .accordion-body {
            padding: 20px 24px 24px;
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.75;
        }

        /* 14. 转化 CTA 与表单 */
        .cta-container-card {
            background: linear-gradient(135deg, #F0F7FF 0%, #E0F2FE 100%);
            border: 1px solid #BAE6FD;
            border-radius: 20px;
            padding: 50px 40px;
            box-shadow: 0 10px 30px rgba(2, 132, 199, 0.08);
        }

        .cta-form .form-control, .cta-form .form-select {
            border: 1px solid #CBD5E1;
            border-radius: 8px;
            padding: 12px 16px;
            font-size: 0.95rem;
        }

        .cta-form .form-control:focus, .cta-form .form-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.15);
        }

        /* 统一页脚 */
        .site-footer {
            background-color: #0B1120;
            color: #94A3B8;
            padding: 80px 0 30px;
            border-top: 1px solid #1E293B;
        }

        .site-footer h5 {
            color: #FFFFFF;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 22px;
        }

        .site-footer a {
            color: #94A3B8;
            text-decoration: none;
            transition: var(--transition-smooth);
        }

        .site-footer a:hover {
            color: #38BDF8;
        }

        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer ul li {
            margin-bottom: 12px;
            font-size: 0.92rem;
        }

        .footer-bottom-bar {
            border-top: 1px solid #1E293B;
            margin-top: 50px;
            padding-top: 28px;
            font-size: 0.85rem;
        }

        @media (max-width: 991.98px) {
            .section-padding { padding: 60px 0; }
            .section-title { font-size: 1.85rem; }
            .cta-container-card { padding: 32px 20px; }
            .top-notice-bar { text-align: center; }
        }