/* roulang page: index */
:root {
            --primary: #1E40AF;
            --accent: #2563EB;
            --bg-base: #F8FAFC;
            --text-main: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
        }
        * { box-sizing: border-box; }
        body {
            background-color: var(--bg-base);
            color: var(--text-body);
            font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
            -webkit-font-smoothing: antialiased;
        }
        .hero-bg {
            background-image: linear-gradient(to right, rgba(15, 23, 42, 0.94) 0%, rgba(30, 64, 175, 0.82) 100%), url('/assets/images/00ba7d9273065098.jpg');
            background-size: cover;
            background-position: center;
        }
        .mesh-gradient-tech {
            background: radial-gradient(circle at 10% 20%, rgba(37, 99, 235, 0.08) 0%, transparent 40%),
                        radial-gradient(circle at 90% 80%, rgba(13, 148, 136, 0.08) 0%, transparent 40%);
        }
        .card-shadow-custom {
            box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 6px -1px rgba(15, 23, 42, 0.03);
        }
        .card-shadow-custom:hover {
            box-shadow: 0 20px 25px -5px rgba(30, 64, 175, 0.1), 0 10px 10px -5px rgba(30, 64, 175, 0.04);
        }