/* roulang page: index */
:root {
            --primary: #1E40AF;
            --accent: #EA580C;
            --surface: #F8FAFC;
            --text-main: #0F172A;
            --text-muted: #64748B;
        }
        html { scroll-behavior: smooth; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
        .hero-bg {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.94) 0%, rgba(30, 64, 175, 0.88) 100%), url('/assets/images/db91796f07f55ae6.jpg') center/cover no-repeat;
        }
        .gold-badge {
            background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
        }
        .glass-panel {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }