/* roulang page: index */
:root {
            --primary-dark: #0F2537;
            --signal-blue: #0EA5E9;
            --safety-green: #10B981;
            --text-main: #1E293B;
            --text-secondary: #475569;
            --bg-neutral: #F8FAFC;
            --bg-card: #FFFFFF;
            --border-color: #E2E8F0;
        }
        * { box-sizing: border-box; }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-neutral);
            color: var(--text-main);
            line-height: 1.7;
            overflow-x: hidden;
        }
        .container-custom {
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        .hero-banner {
            background: linear-gradient(135deg, rgba(15, 37, 55, 0.94) 0%, rgba(15, 37, 55, 0.82) 100%), url('/assets/images/7f12cb82358a6ee8.webp') center/cover no-repeat;
        }
        .mesh-bg {
            background-image: radial-gradient(rgba(14, 165, 233, 0.12) 1px, transparent 1px);
            background-size: 24px 24px;
        }
        .card-custom {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            box-shadow: 0 1px 3px rgba(15, 37, 55, 0.05);
            transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-custom:hover {
            box-shadow: 0 12px 24px -8px rgba(15, 37, 55, 0.12);
            transform: translateY(-3px);
            border-color: #CBD5E1;
        }
        .cta-btn-primary {
            background-color: var(--signal-blue);
            color: #ffffff;
            transition: all 0.2s ease-in-out;
            min-height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .cta-btn-primary:hover {
            background-color: #0284C7;
            box-shadow: 0 4px 12px rgba(14, 165, 233, 0.35);
        }