/* roulang page: index */
:root {
            --primary: #0F52BA;
            --primary-hover: #0d449b;
            --accent-green: #10B981;
            --accent-orange: #FF6B00;
            --bg-dark: #0B1120;
            --bg-light: #F8FAFC;
            --text-main: #0F172A;
            --text-muted: #64748B;
        }
        html { scroll-behavior: smooth; }
        body { font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif; color: var(--text-main); background-color: #ffffff; }
        .glass-header { backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); background-color: rgba(255, 255, 255, 0.95); }
        .hero-overlay { background: linear-gradient(135deg, rgba(11, 17, 32, 0.92) 0%, rgba(15, 82, 186, 0.85) 100%); }
        .card-hover-effect { transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); }
        .card-hover-effect:hover { transform: translateY(-4px); box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04); }
        .section-separator { border-top: 1px solid #E2E8F0; }
        .badge-pulse { animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite; }
        @keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .5; } }