:root { --primary: rgb(15,157,88); --primary-light: #e6f5eb; --text-main: #333333; --text-muted: #666666; --bg-body: #f8f9fa; --bg-white: #ffffff; --border-color: #eaeaea; --radius-md: 8px; --shadow-sm: 0 2px 8px rgba(0,0,0,0.04); }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: sans-serif; color: var(--text-main); background-color: var(--bg-body); line-height: 1.6; }
        a { text-decoration: none; color: inherit; }
        ul, li { list-style: none; }
        img { max-width: 100%; height: auto; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        
        .site-header { background: var(--bg-white); box-shadow: var(--shadow-sm); position: sticky; top: 0; z-index: 100; }
        .header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
        .logo { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
        .logo img { display: block; height: 36px; 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-main); white-space: nowrap; }
        .desktop-nav { display: flex; gap: 30px; }
        .desktop-nav a { font-size: 16px; font-weight: 500; }
        .header-action { display: flex; gap: 16px; }
        .btn { padding: 10px 24px; border-radius: var(--radius-md); font-weight: 600; text-align: center; }
        .btn-primary { background: var(--primary); color: #fff; }
        .mobile-menu-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; }
        
        
        .mobile-drawer { position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: 1000; visibility: hidden; pointer-events: none; }
        .mobile-drawer.active { visibility: visible; pointer-events: auto; }
        .drawer-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); opacity: 0; transition: opacity 0.3s; }
        .mobile-drawer.active .drawer-overlay { opacity: 1; }
        .drawer-content { position: absolute; top: 0; left: -300px; width: 280px; height: 100%; background: var(--bg-white); transition: left 0.3s ease; display: flex; flex-direction: column; }
        .mobile-drawer.active .drawer-content { left: 0; }
        .drawer-header { padding: 20px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border-color); }
        .drawer-close { background: none; border: none; font-size: 28px; cursor: pointer; }
        .drawer-nav { padding: 20px 0; overflow-y: auto; }
        .drawer-nav a { display: block; padding: 12px 24px; font-weight: 500; border-bottom: 1px solid #f0f0f0; }

        
        .about-banner { background: url('https://images.unsplash.com/photo-1557804506-669a67965ba0?auto=format&fit=crop&w=1200&q=80') center/cover; padding: 100px 0; text-align: center; color: #fff; position: relative; }
        .about-banner::before { content: ''; position: absolute; top:0; left:0; width:100%; height:100%; background: rgba(0,0,0,0.6); }
        .about-banner .container { position: relative; z-index: 2; }
        .about-banner h1 { font-size: 40px; margin-bottom: 16px; }
        
        .about-intro { padding: 80px 0; background: var(--bg-white); }
        .intro-grid { display: flex; gap: 60px; align-items: center; }
        .intro-text { flex: 1; }
        .intro-text h2 { font-size: 32px; margin-bottom: 24px; color: var(--primary); }
        .intro-text p { font-size: 16px; color: var(--text-muted); margin-bottom: 16px; }
        .intro-img { flex: 1; border-radius: 16px; overflow: hidden; box-shadow: 0 10px 30px rgba(0,0,0,0.1); }
        
        .about-values { padding: 80px 0; background: var(--bg-body); text-align: center; }
        .values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin-top: 50px; }
        .value-card { background: var(--bg-white); padding: 40px; border-radius: 16px; box-shadow: var(--shadow-sm); }
        .value-num { font-size: 48px; font-weight: 900; color: var(--primary-light); margin-bottom: 20px; }
        .value-card h3 { font-size: 20px; margin-bottom: 16px; }

        
        .site-footer { background: #1a1a1a; color: #999; padding: 60px 0 20px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo span { color: #fff; }
        .footer-links h3 { color: #fff; margin-bottom: 20px; }
        
        @media (max-width: 992px) {
            .desktop-nav, .header-action .btn { display: none; }
            .mobile-menu-toggle { display: block; }
            .intro-grid { flex-direction: column; }
            .values-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }