/* roulang page: index */
:root {
            --primary: #1E40AF;
            --primary-hover: #1D4ED8;
            --accent: #0284C7;
            --safety: #0D9488;
            --dark: #0F172A;
            --light-bg: #F8FAFC;
            --card-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
            --card-shadow-hover: 0 16px 32px -4px rgba(30, 64, 175, 0.12);
        }
        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
        }
        body {
            background-color: var(--light-bg);
            color: #334155;
            line-height: 1.6;
        }
        .custom-card {
            background: #ffffff;
            border-radius: 14px;
            border: 1px solid #E2E8F0;
            box-shadow: var(--card-shadow);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .custom-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-shadow-hover);
            border-color: #BFDBFE;
        }
        .hero-countdown-badge {
            animation: pulse-badge 2s infinite;
        }
        @keyframes pulse-badge {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.8; }
        }
        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease-out;
        }
        .accordion-item.active .accordion-content {
            max-height: 400px;
        }
        .accordion-item.active .accordion-icon {
            transform: rotate(180deg);
        }