/* roulang page: index */
:root {
            --primary-blue: #0A192F;
            --accent-orange: #FF6B35;
            --text-main: #E2E8F0;
            --text-dark: #1E293B;
            --bg-light: #F8FAFC;
            --container-max: 1200px;
            --radius: 12px;
            --shadow: 0 4px 6px rgba(0,0,0,0.1);
        }

        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'Inter', -apple-system, sans-serif; background-color: var(--bg-light); color: var(--text-dark); line-height: 1.6; }
        
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 20px; }
        
        /* Header */
        header { background: #fff; padding: 15px 0; border-bottom: 1px solid #e2e8f0; position: sticky; top: 0; z-index: 1000; }
        .nav-inner { display: flex; justify-content: space-between; align-items: center; }
        .logo { font-size: 24px; font-weight: 800; color: var(--primary-blue); text-decoration: none; }
        .nav-links a { color: var(--primary-blue); text-decoration: none; font-weight: 500; margin-left: 25px; transition: color 0.3s; }
        .nav-links a:hover { color: var(--accent-orange); }

        /* Hero Section */
        .hero { background: var(--primary-blue); color: #fff; padding: 80px 0; text-align: center; }
        .hero-title { font-size: 48px; margin-bottom: 20px; }
        .hero-desc { max-width: 700px; margin: 0 auto 30px; color: #CBD5E1; font-size: 18px; }
        .btn-main { background: var(--accent-orange); color: #fff; padding: 12px 30px; border-radius: 50px; text-decoration: none; font-weight: 600; display: inline-block; transition: transform 0.2s; }
        .btn-main:hover { transform: translateY(-2px); }

        /* Sections */
        section { padding: 80px 0; }
        .section-title { text-align: center; font-size: 36px; margin-bottom: 50px; color: var(--primary-blue); }
        
        /* Grid Layouts */
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .card { background: #fff; padding: 30px; border-radius: var(--radius); box-shadow: var(--shadow); transition: transform 0.3s; }
        .card:hover { transform: translateY(-5px); }
        
        /* Stats Bar */
        .stats-bar { background: var(--accent-orange); color: #fff; padding: 40px 0; text-align: center; }
        .stat-item { display: inline-block; padding: 0 40px; }
        .stat-num { font-size: 40px; font-weight: 700; display: block; }

        /* Table/Compare */
        .comparison-table { width: 100%; border-collapse: collapse; margin-top: 30px; }
        .comparison-table th, .comparison-table td { padding: 20px; border: 1px solid #E2E8F0; text-align: center; }
        .comparison-table th { background: #F1F5F9; }

        /* Footer */
        footer { background: var(--primary-blue); color: #94A3B8; padding: 40px 0; text-align: center; }
        
        @media (max-width: 768px) {
            .grid-3 { grid-template-columns: 1fr; }
            .hero-title { font-size: 32px; }
            .nav-links { display: none; }
        }