/* roulang page: index */
:root {
            --primary: #0F52BA;
            --primary-dark: #0A2540;
            --accent: #00A86B;
            --bg-body: #F8FAFC;
            --bg-card: #FFFFFF;
            --text-main: #1E293B;
            --text-secondary: #64748B;
            --border: #E2E8F0;
            --shadow-base: 0 4px 6px -1px rgba(15, 82, 186, 0.04), 0 2px 4px -2px rgba(15, 82, 186, 0.03);
            --shadow-hover: 0 20px 25px -5px rgba(15, 82, 186, 0.08), 0 8px 10px -6px rgba(15, 82, 186, 0.04);
            --radius: 12px;
            --gap: 96px;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; background: var(--bg-body); color: var(--text-main); line-height: 1.6; }
        
        .container { max-width: 1240px; margin: 0 auto; padding: 0 20px; }
        a { text-decoration: none; color: inherit; transition: 0.3s; }
        
        /* Header */
        .header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,0.9); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); padding: 16px 0; }
        .nav-inner { display: flex; justify-content: space-between; align-items: center; }
        .logo { font-size: 20px; font-weight: 800; color: var(--primary); }
        .nav-links { display: flex; gap: 24px; font-weight: 500; font-size: 14px; }
        .btn-primary { background: var(--primary); color: #fff; padding: 10px 24px; border-radius: 6px; font-weight: 600; }
        
        /* Hero */
        .hero { padding: 80px 0; text-align: center; background-image: url('/assets/images/7e23fe5ec23ae825.jpg'); background-size: cover; background-position: center; border-radius: 0 0 40px 40px; color: #fff; }
        .hero h1 { font-size: 48px; margin-bottom: 20px; }
        
        /* Section */
        .section { padding: var(--gap) 0; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .card { background: var(--bg-card); padding: 30px; border-radius: var(--radius); border: 1px solid var(--border); box-shadow: var(--shadow-base); transition: 0.3s; }
        .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        
        /* Utils */
        .text-center { text-align: center; }
        .mb-20 { margin-bottom: 20px; }
        .title-section { margin-bottom: 50px; }
        
        /* Footer */
        .footer { background: var(--primary-dark); color: #94A3B8; padding: 60px 0; font-size: 14px; }
        
        @media (max-width: 768px) {
            .grid-3 { grid-template-columns: 1fr; }
            .hero h1 { font-size: 32px; }
        }