:root {
            --primary-color: #1D7BFF;
            --accent-color: rgb(52,199,89);
            --bg-dark: #0B192C;
            --bg-light: #F5F7FA;
            --text-dark: #1E293B;
            --text-light: #F8FAFC;
            --border-color: rgba(255,255,255,0.1);
            --border-light: #E2E8F0;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-dark);
            background-color: #FFF;
            line-height: 1.6;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; }

        
        header { background-color: var(--bg-dark); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 100; backdrop-filter: blur(8px); }
        .header-container { max-width: var(--max-width); margin: 0 auto; padding: 16px 20px; display: flex; align-items: center; justify-content: space-between; }
        .logo { display: inline-flex; align-items: center; gap: 12px; }
        .logo img { display: block; height: 40px; width: auto; max-width: 160px; object-fit: contain; flex-shrink: 0; }
        .logo span { display: inline-block; font-size: 20px; font-weight: 800; line-height: 1; color: var(--text-light); }
        .nav-menu { display: flex; align-items: center; gap: 24px; }
        .nav-link { color: rgba(255, 255, 255, 0.8); font-size: 15px; font-weight: 500; padding: 8px 4px; position: relative; }
        .nav-link:hover, .nav-link.active { color: var(--primary-color); }
        .nav-link::after { content: ''; position: absolute; bottom: 0; left: 50%; width: 0; height: 2px; background-color: var(--primary-color); transition: var(--transition); transform: translateX(-50%); }
        .nav-link:hover::after, .nav-link.active::after { width: 100%; }
        .menu-toggle { display: none; background: none; border: none; color: var(--text-light); font-size: 24px; cursor: pointer; }

        
        .drawer-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.6); backdrop-filter: blur(4px); z-index: 998; opacity: 0; visibility: hidden; transition: var(--transition); }
        .drawer-overlay.active { opacity: 1; visibility: visible; }
        .drawer-nav { position: fixed; top: 0; left: -300px; width: 300px; height: 100%; background-color: var(--bg-dark); z-index: 999; box-shadow: 4px 0 20px rgba(0,0,0,0.5); transition: var(--transition); display: flex; flex-direction: column; padding: 24px; }
        .drawer-nav.active { left: 0; }
        .drawer-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 40px; }
        .drawer-close { background: none; border: none; color: var(--text-light); font-size: 24px; cursor: pointer; }
        .drawer-menu { display: flex; flex-direction: column; gap: 20px; }
        .drawer-link { color: var(--text-light); font-size: 18px; font-weight: 500; padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
        .drawer-link:hover { color: var(--primary-color); padding-left: 8px; }

        
        .about-banner { background: linear-gradient(135deg, var(--bg-dark) 0%, #102A43 100%); color: var(--text-light); padding: 80px 20px; text-align: center; }
        .about-banner-container { max-width: 800px; margin: 0 auto; }
        .about-banner h1 { font-size: 40px; font-weight: 800; margin-bottom: 16px; }
        .about-banner p { font-size: 18px; color: rgba(255,255,255,0.7); }

        
        .content-section { max-width: 900px; margin: 80px auto; padding: 0 20px; }
        .content-section h2 { font-size: 28px; color: var(--bg-dark); margin-bottom: 24px; font-weight: 800; }
        .content-section p { font-size: 16px; color: #475569; margin-bottom: 20px; line-height: 1.8; }
        
        
        .grid-3col { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin: 50px 0; }
        .about-card { background-color: var(--bg-light); border-radius: 12px; padding: 30px; text-align: center; border: 1px solid var(--border-light); }
        .about-card-icon { font-size: 32px; color: var(--primary-color); margin-bottom: 16px; }
        .about-card h3 { font-size: 18px; font-weight: 700; color: var(--bg-dark); margin-bottom: 10px; }
        .about-card p { font-size: 14px; color: #64748B; margin-bottom: 0; }

        
        .timeline { margin-top: 60px; position: relative; padding-left: 30px; border-left: 2px solid var(--border-light); }
        .timeline-item { position: relative; margin-bottom: 40px; }
        .timeline-item::before { content: ''; position: absolute; left: -37px; top: 6px; width: 12px; height: 12px; border-radius: 50%; background-color: var(--primary-color); border: 4px solid #FFF; }
        .timeline-year { font-size: 20px; font-weight: 800; color: var(--primary-color); margin-bottom: 8px; }
        .timeline-title { font-size: 16px; font-weight: 700; color: var(--bg-dark); margin-bottom: 6px; }
        .timeline-desc { font-size: 14px; color: #64748B; }

        
        footer { background-color: #070F1E; color: rgba(255,255,255,0.6); padding: 80px 20px 40px; border-top: 1px solid rgba(255,255,255,0.05); }
        .footer-container { max-width: var(--max-width); margin: 0 auto; display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 40px; margin-bottom: 60px; }
        .footer-brand { display: flex; flex-direction: column; gap: 20px; }
        .footer-brand .logo span { color: #FFF; }
        .footer-desc { font-size: 14px; line-height: 1.6; color: rgba(255,255,255,0.5); }
        .footer-links-group h3 { color: #FFF; font-size: 16px; font-weight: 700; margin-bottom: 24px; }
        .footer-links-group ul { list-style: none; }
        .footer-links-group ul li { margin-bottom: 12px; }
        .footer-links-group ul li a { font-size: 14px; }
        .footer-links-group ul li a:hover { color: var(--primary-color); padding-left: 4px; }
        .footer-bottom { max-width: var(--max-width); margin: 0 auto; padding-top: 40px; border-top: 1px solid rgba(255,255,255,0.05); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; font-size: 14px; }
        .footer-info { display: flex; gap: 24px; }

        @media (max-width: 768px) {
            .grid-3col { grid-template-columns: 1fr; }
            .nav-menu { display: none; }
            .menu-toggle { display: block; }
            .footer-container { grid-template-columns: 1fr; }
        }