/* roulang page: index */
:root {
            --primary: #1E40AF;
            --accent: #0284C7;
            --bg-light: #F8FAFC;
            --text-main: #0F172A;
            --text-muted: #475569;
            --border-color: #E2E8F0;
        }
        html { scroll-behavior: smooth; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif; }
        body { background-color: var(--bg-light); color: var(--text-main); }
        .hero-bg {
            background: linear-gradient(180deg, rgba(15, 23, 42, 0.82) 0%, rgba(30, 64, 175, 0.75) 100%), url('/assets/images/863431a6b0bc8cf1.jpg') center/cover no-repeat;
        }
        .banner-pattern {
            background-image: radial-gradient(rgba(2, 132, 199, 0.15) 1px, transparent 1px);
            background-size: 24px 24px;
        }
        .card-hover { transition: all 0.25s ease-out; }
        .card-hover: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); }
        .custom-scrollbar::-webkit-scrollbar { width: 6px; }
        .custom-scrollbar::-webkit-scrollbar-thumb { background: #CBD5E1; border-radius: 4px; }