/* roulang page: index */
:root {
            --color-bg: #0A0A0A;
            --color-primary: #8A2BE2;
            --color-secondary: #00F5FF;
            --text-main: #FFFFFF;
            --text-muted: #A0A0A0;
            --border-color: rgba(255, 255, 255, 0.1);
            --glass: rgba(255, 255, 255, 0.05);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background-color: var(--color-bg); color: var(--text-main); line-height: 1.6; }
        
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        /* Typography */
        h1, h2, h3 { font-weight: 800; line-height: 1.2; margin-bottom: 1rem; }
        
        /* Components */
        .glass-card { background: var(--glass); border: 1px solid var(--border-color); border-radius: 12px; padding: 2rem; backdrop-filter: blur(10px); transition: var(--transition); }
        .glass-card:hover { border-color: var(--color-secondary); transform: translateY(-5px); }
        
        .btn { display: inline-block; padding: 12px 30px; border-radius: 6px; font-weight: 600; text-decoration: none; transition: var(--transition); cursor: pointer; }
        .btn-primary { background: linear-gradient(135deg, var(--color-primary), #6A1B9A); color: white; border: none; }
        .btn-primary:hover { transform: scale(1.05); box-shadow: 0 0 20px rgba(138, 43, 226, 0.4); }
        
        /* Navigation */
        header { padding: 20px 0; border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 100; background: rgba(10,10,10,0.9); }
        .nav-wrapper { display: flex; justify-content: space-between; align-items: center; }
        .logo { font-size: 1.5rem; font-weight: 800; color: white; text-decoration: none; background: linear-gradient(to right, #fff, #ccc); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        nav ul { display: flex; list-style: none; gap: 30px; }
        nav a { color: var(--text-muted); text-decoration: none; font-size: 0.9rem; transition: var(--transition); }
        nav a:hover { color: var(--color-secondary); }

        /* Sections */
        section { padding: 80px 0; }
        .hero { min-height: 80vh; display: flex; align-items: center; background: url('/assets/images/cd486a8cb5377442.jpg') center/cover; position: relative; }
        .hero::before { content: ''; position: absolute; inset: 0; background: rgba(0,0,0,0.7); }
        .hero-content { position: relative; z-index: 1; max-width: 700px; }
        
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
        .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
        
        /* Footer */
        footer { padding: 40px 0; border-top: 1px solid var(--border-color); text-align: center; color: var(--text-muted); font-size: 0.85rem; }
        
        /* Responsive */
        @media (max-width: 768px) {
            .grid-3, .grid-2 { grid-template-columns: 1fr; }
            .nav-menu { display: none; }
        }