/* roulang page: index */
:root {
            --primary-gold: #D97706;
            --primary-emerald: #059669;
            --dark-bg: #0B0F19;
            --card-dark: #111827;
            --text-main: #0F172A;
            --text-muted: #475569;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
            color: #1E293B;
            background-color: #F8FAFC;
        }

        .container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        .title-gold-gradient {
            background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-overlay {
            background: linear-gradient(135deg, rgba(11, 15, 25, 0.94) 0%, rgba(15, 23, 42, 0.88) 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);
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease-out, opacity 0.25s ease;
            opacity: 0;
        }

        .faq-item.active .faq-content {
            max-height: 350px;
            opacity: 1;
        }

        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
        }

        @media (max-width: 768px) {
            .mobile-hide { display: none; }
        }