/* roulang page: index */
:root {
            --primary-navy: #0F172A;
            --accent-orange: #EA580C;
            --surface-bg: #F8FAFC;
            --text-dark: #1E293B;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: #F8FAFC;
            color: #1E293B;
            -webkit-font-smoothing: antialiased;
        }
        .hero-bg {
            background-image: linear-gradient(rgba(15, 23, 42, 0.88), rgba(15, 23, 42, 0.94)), url('/assets/images/5355b0a8ae9d0d69.webp');
            background-size: cover;
            background-position: center;
        }
        .bg-pattern {
            background-color: #F1F5F9;
            background-image: radial-gradient(#CBD5E1 1px, transparent 1px);
            background-size: 20px 20px;
        }
        .dark-feature-bg {
            background-image: linear-gradient(rgba(11, 15, 23, 0.96), rgba(11, 15, 23, 0.96)), url('/assets/images/28012073c3a106ab.webp');
            background-size: cover;
            background-position: center;
        }