/* roulang page: index */
:root {
            --primary-color: #0A2540;
            --accent-color: #00C896;
            --bg-color: #F8F9FB;
            --white: #FFFFFF;
            --text-color: #4A5568;
            --text-dark: #2D3748;
            --shadow: 0 4px 20px rgba(0,0,0,0.06);
            --border-radius: 12px;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; background-color: var(--bg-color); color: var(--text-color); line-height: 1.7; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        /* Navigation */
        header { background: var(--white); padding: 15px 0; border-bottom: 1px solid #E2E8F0; position: sticky; top: 0; z-index: 1000; }
        nav { display: flex; justify-content: space-between; align-items: center; }
        .logo { font-size: 20px; font-weight: 800; color: var(--primary-color); text-decoration: none; }
        .nav-links { display: flex; gap: 30px; }
        .nav-links a { text-decoration: none; color: var(--text-dark); font-weight: 500; font-size: 15px; transition: color 0.3s; }
        .nav-links a:hover { color: var(--accent-color); }
        .btn-header { background: var(--primary-color); color: white; padding: 8px 20px; border-radius: 20px; font-size: 14px; text-decoration: none; }

        /* Hero Section */
        .hero { padding: 100px 0; background: linear-gradient(135deg, #0A2540 0%, #0B1B32 100%); color: white; text-align: center; }
        .hero h1 { font-size: 48px; margin-bottom: 20px; line-height: 1.2; }
        .hero p { font-size: 18px; color: #CBD5E0; max-width: 700px; margin: 0 auto 40px; }
        .hero-btn { display: inline-block; padding: 15px 40px; background: var(--accent-color); color: #0A2540; font-weight: bold; border-radius: var(--border-radius); text-decoration: none; transition: transform 0.3s; }
        .hero-btn:hover { transform: scale(1.05); }

        /* Sections */
        .section-padding { padding: 80px 0; }
        .section-title { text-align: center; font-size: 36px; color: var(--primary-color); margin-bottom: 50px; }
        
        /* Global Coverage / Cards */
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .card { background: var(--white); padding: 30px; border-radius: var(--border-radius); box-shadow: var(--shadow); transition: transform 0.3s; }
        .card:hover { transform: translateY(-5px); }
        .card h3 { color: var(--primary-color); margin-bottom: 15px; }

        /* Data Bar */
        .data-strip { background: var(--primary-color); color: white; padding: 40px 0; text-align: center; display: flex; justify-content: space-around; }
        .data-item span { display: block; font-size: 32px; font-weight: bold; color: var(--accent-color); }

        /* Contact Section */
        .cta-section { background: var(--white); text-align: center; padding: 80px 20px; }
        
        /* Responsive */
        @media (max-width: 768px) {
            .grid-3 { grid-template-columns: 1fr; }
            .hero h1 { font-size: 32px; }
            .nav-links { display: none; }
        }

        /* Footer */
        footer { background: #0B1B32; color: #718096; padding: 40px 0; text-align: center; font-size: 14px; }