/* roulang page: index */
:root {
            --brand-navy: #0F2537;
            --brand-dark: #0B1727;
            --brand-amber: #D97706;
            --brand-cyan: #0284C7;
            --text-main: #1E293B;
            --text-muted: #475569;
            --border-color: #E2E8F0;
        }
        body {
            color: var(--text-main);
            line-height: 1.8;
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
        }
        .hero-overlay {
            background: linear-gradient(135deg, rgba(11, 23, 39, 0.94) 0%, rgba(15, 37, 55, 0.88) 50%, rgba(6, 13, 23, 0.95) 100%);
        }
        .text-glow {
            text-shadow: 0 0 24px rgba(217, 119, 6, 0.35);
        }
        .card-hover {
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 32px -8px rgba(15, 37, 55, 0.12);
        }