/* roulang page: index */
:root {
            --brand-primary: #1E3A8A;
            --brand-accent: #2563EB;
            --brand-teal: #0D9488;
            --brand-mint: #10B981;
            --brand-amber: #F59E0B;
            --brand-bg: #F8FAFC;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--brand-bg);
            color: #1e293b;
        }
        .hero-gradient-overlay {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(30, 58, 138, 0.82) 50%, rgba(13, 148, 136, 0.75) 100%);
        }
        .text-gradient {
            background: linear-gradient(135deg, #1E3A8A 0%, #2563EB 55%, #0D9488 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .badge-pulse::before {
            content: '';
            position: absolute;
            width: 100%;
            height: 100%;
            border-radius: 9999px;
            background-color: inherit;
            animation: badgePulse 2s cubic-bezier(0, 0, 0.2, 1) infinite;
            z-index: -1;
        }
        @keyframes badgePulse {
            0% { transform: scale(1); opacity: 0.8; }
            100% { transform: scale(2.2); opacity: 0; }
        }
        .accordion-content {
            transition: max-height 0.35s ease-out, opacity 0.3s ease;
        }