/* roulang page: index */
:root {
            --brand-primary: #059669;
            --brand-teal: #14b8a6;
            --brand-cyan: #06b6d4;
            --text-dark: #0f172a;
            --text-muted: #475569;
            --bg-light: #f8fafc;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-dark);
            background-color: #ffffff;
            -webkit-font-smoothing: antialiased;
        }
        .hero-bg-overlay {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(5, 150, 105, 0.82) 100%);
        }
        .gradient-text {
            background: linear-gradient(135deg, #059669 0%, #06b6d4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .gradient-text-light {
            background: linear-gradient(135deg, #34d399 0%, #38bdf8 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .card-glow:hover {
            box-shadow: 0 20px 35px -10px rgba(5, 150, 105, 0.18);
            transform: translateY(-3px);
        }
        .custom-scrollbar::-webkit-scrollbar {
            height: 6px;
        }
        .custom-scrollbar::-webkit-scrollbar-thumb {
            background-color: #cbd5e1;
            border-radius: 9999px;
        }