/* roulang page: index */
:root {
            --primary: #0F172A;
            --accent: #10B981;
            --bg-light: #FAFAFA;
            --text-main: #1E293B;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
        }
        body {
            color: var(--text-main);
            background-color: var(--bg-light);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            overflow-x: hidden;
        }
        .glass-nav {
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            background: rgba(15, 23, 42, 0.92);
        }
        .card-hover {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 30px -10px rgba(15, 23, 42, 0.1);
            border-color: rgba(16, 185, 129, 0.4);
        }
        .timeline-step::before {
            content: '';
            position: absolute;
            top: 24px;
            left: 50%;
            width: 100%;
            height: 2px;
            background: #E2E8F0;
            z-index: 0;
        }
        @media (max-width: 768px) {
            .timeline-step::before {
                display: none;
            }
        }