/* roulang page: index */
:root {
            --bg-void: #0A0D14;
            --bg-card: rgba(16, 22, 38, 0.75);
            --bg-card-hover: rgba(22, 30, 52, 0.88);
            --primary-glow: #00F2FE;
            --secondary-glow: #4FACFE;
            --accent-purple: #7F00FF;
            --accent-green: #00F5A0;
            --text-main: #F0F4FC;
            --text-muted: #94A3B8;
            --text-dim: #64748B;
            --border-glow: rgba(0, 242, 254, 0.2);
            --border-subtle: rgba(255, 255, 255, 0.08);
            --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.45);
        }

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

        body {
            background-color: var(--bg-void);
            color: var(--text-main);
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.6;
            overflow-x: hidden;
            background-image: 
                radial-gradient(circle at 15% 20%, rgba(79, 172, 254, 0.08) 0%, transparent 40%),
                radial-gradient(circle at 85% 75%, rgba(127, 0, 255, 0.08) 0%, transparent 45%);
            background-attachment: fixed;
        }

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

        /* 顶部状态与指示条 */
        .status-top-bar {
            background: rgba(10, 13, 20, 0.95);
            border-bottom: 1px solid var(--border-subtle);
            font-size: 0.82rem;
            color: var(--text-muted);
            padding: 6px 0;
            position: relative;
            z-index: 1031;
        }

        .status-indicator {
            display: inline-block;
            width: 8px;
            height: 8px;
            background-color: var(--accent-green);
            border-radius: 50%;
            margin-right: 6px;
            box-shadow: 0 0 8px var(--accent-green);
        }

        /* 主导航条 */
        .custom-navbar {
            background: rgba(16, 22, 38, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-glow);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1030;
        }

        .navbar-brand-text {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            background: linear-gradient(135deg, #FFFFFF 20%, var(--primary-glow) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .nav-link-custom {
            color: var(--text-muted);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 6px;
            transition: all 0.2s ease;
        }

        .nav-link-custom:hover, .nav-link-custom.active {
            color: var(--primary-glow);
            background: rgba(0, 242, 254, 0.08);
        }

        /* 统一发光按钮 */
        .btn-glow-cyan {
            background: linear-gradient(135deg, var(--primary-glow), var(--secondary-glow));
            color: #050B14;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: 6px;
            border: none;
            box-shadow: 0 0 16px rgba(0, 242, 254, 0.4);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .btn-glow-cyan:hover {
            color: #000;
            transform: translateY(-2px);
            box-shadow: 0 0 24px rgba(0, 242, 254, 0.7);
        }

        .btn-glow-outline {
            background: transparent;
            color: var(--primary-glow);
            border: 1px solid var(--border-glow);
            padding: 10px 22px;
            border-radius: 6px;
            min-height: 44px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: all 0.25s ease;
        }

        .btn-glow-outline:hover {
            background: rgba(0, 242, 254, 0.12);
            border-color: var(--primary-glow);
            color: #FFFFFF;
        }

        /* 统一玻璃拟态面板 */
        .glass-panel {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: 12px;
            box-shadow: var(--shadow-glass);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
        }

        .glass-panel:hover {
            border-color: var(--border-glow);
            box-shadow: 0 12px 36px 0 rgba(0, 242, 254, 0.15);
            background: var(--bg-card-hover);
        }

        /* 板块公共规则 */
        .page-section {
            padding: 85px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            position: relative;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--primary-glow);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 12px;
            padding: 4px 12px;
            background: rgba(0, 242, 254, 0.1);
            border-radius: 4px;
            border: 1px solid var(--border-glow);
        }

        .section-title {
            font-size: 2.1rem;
            font-weight: 700;
            margin-bottom: 18px;
            background: linear-gradient(180deg, #FFFFFF 0%, #CAD5E2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .section-desc {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 820px;
            line-height: 1.75;
        }

        /* 板块1：Hero 双栏门户 */
        .hero-banner {
            padding: 90px 0 80px;
            background: radial-gradient(circle at 70% 30%, rgba(0, 242, 254, 0.12) 0%, transparent 60%);
        }

        .hero-headline {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 24px;
            letter-spacing: -0.5px;
        }

        .hero-text-glow {
            background: linear-gradient(90deg, #FFFFFF 0%, var(--primary-glow) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .portal-grid-link {
            padding: 20px;
            display: block;
            border-radius: 10px;
            background: rgba(16, 22, 38, 0.9);
            border: 1px solid var(--border-subtle);
            height: 100%;
        }

        .portal-grid-link:hover {
            border-color: var(--primary-glow);
            transform: translateY(-3px);
        }

        .portal-grid-link h3 {
            font-size: 1.15rem;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .portal-grid-link p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.5;
        }

        /* 指标数字 */
        .metric-num {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1;
            font-family: Consolas, Monaco, monospace;
            background: linear-gradient(90deg, var(--accent-green), var(--primary-glow));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
        }

        /* 对比表格重构 */
        .benchmark-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            border-radius: 8px;
            overflow: hidden;
        }

        .benchmark-table th {
            background: rgba(10, 13, 20, 0.8);
            padding: 16px 20px;
            font-size: 0.95rem;
            color: var(--text-muted);
            border-bottom: 1px solid var(--border-subtle);
        }

        .benchmark-table td {
            padding: 18px 20px;
            font-size: 0.92rem;
            border-bottom: 1px solid var(--border-subtle);
            background: rgba(16, 22, 38, 0.45);
        }

        .benchmark-highlight {
            color: var(--accent-green);
            font-weight: 600;
        }

        /* 时间线样式 */
        .timeline-step {
            position: relative;
            padding-left: 32px;
            margin-bottom: 30px;
            border-left: 2px solid var(--border-glow);
        }

        .timeline-step::before {
            content: '';
            position: absolute;
            left: -7px;
            top: 4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary-glow);
            box-shadow: 0 0 10px var(--primary-glow);
        }

        /* 折叠面板 (FAQ) 定制 */
        .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: 8px !important;
            margin-bottom: 14px;
            overflow: hidden;
        }

        .accordion-button {
            background: transparent;
            color: var(--text-main);
            font-weight: 600;
            font-size: 1.05rem;
            padding: 20px 24px;
            box-shadow: none !important;
        }

        .accordion-button:not(.collapsed) {
            background: rgba(0, 242, 254, 0.05);
            color: var(--primary-glow);
            border-bottom: 1px solid var(--border-subtle);
        }

        .accordion-button::after {
            filter: invert(1);
        }

        .accordion-body {
            background: transparent;
            color: var(--text-muted);
            padding: 20px 24px;
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* 快捷表单定制 */
        .custom-form-control {
            background: rgba(10, 13, 20, 0.7);
            border: 1px solid var(--border-subtle);
            color: #FFFFFF;
            padding: 12px 16px;
            border-radius: 6px;
            min-height: 46px;
        }

        .custom-form-control:focus {
            background: rgba(10, 13, 20, 0.9);
            border-color: var(--primary-glow);
            color: #FFFFFF;
            box-shadow: 0 0 12px rgba(0, 242, 254, 0.3);
            outline: none;
        }

        /* 统一页脚 */
        .site-footer {
            background: #06080D;
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 30px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .footer-title {
            color: var(--text-main);
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-link-item {
            display: block;
            margin-bottom: 10px;
            color: var(--text-muted);
        }

        .footer-link-item:hover {
            color: var(--primary-glow);
            padding-left: 4px;
        }

        @media (max-width: 991px) {
            .hero-headline {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.75rem;
            }
            .page-section {
                padding: 60px 0;
            }
        }