/* roulang page: index */
:root {
            --primary: #1D4ED8;
            --accent: #0D9488;
            --bg-light: #F8FAFC;
            --text-main: #0F172A;
            --text-muted: #64748B;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
            color: #334155;
            background-color: #FFFFFF;
        }
        .hero-pattern {
            background-image: linear-gradient(rgba(15, 23, 42, 0.88), rgba(15, 23, 42, 0.92)), url('/assets/images/4e104c1914b219ff.webp');
            background-size: cover;
            background-position: center;
        }
        .banner-bg-dark {
            background-image: linear-gradient(rgba(15, 23, 42, 0.94), rgba(15, 23, 42, 0.96)), url('/assets/images/1a8f1e2d3b194482.webp');
            background-size: cover;
            background-position: center;
        }
        .card-custom {
            transition: all 0.28s ease-in-out;
        }
        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 28px -6px rgba(15, 23, 42, 0.08), 0 8px 12px -6px rgba(15, 23, 42, 0.04);
        }