:root { --primary-color: rgb(40,42,54); --primary-dark: #1f212a; --accent-color: #f39c12; --bg-color: #f4f6f9; --text-main: #333333; --text-muted: #666666; --border-color: #e5e7eb; --radius: 8px; }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: -apple-system, sans-serif; background: var(--bg-color); color: var(--text-main); line-height: 1.6; }
        a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
        img { max-width: 100%; height: auto; display: block; }
        .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }

        
        .header { background: var(--primary-color); position: sticky; top: 0; z-index: 100; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
        .header-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }
        .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: 22px; font-weight: 800; line-height: 1; color: #ffffff; white-space: nowrap; }
        .desktop-nav { display: flex; gap: 28px; align-items: center; }
        .desktop-nav a { font-size: 16px; font-weight: 500; color: rgba(255,255,255,0.85); position: relative; }
        .desktop-nav a:hover { color: var(--accent-color); }
        .mobile-menu-btn { display: none; background: none; border: none; color: #fff; cursor: pointer; }

        
        .drawer-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.6); opacity: 0; visibility: hidden; transition: all 0.3s; z-index: 998; }
        .drawer-overlay.active { opacity: 1; visibility: visible; }
        .drawer { position: fixed; top: 0; left: -320px; width: 280px; height: 100vh; background: #fff; z-index: 999; transition: all 0.3s; display: flex; flex-direction: column; }
        .drawer.active { left: 0; }
        .drawer-header { padding: 20px; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
        .drawer .logo span { color: var(--primary-color); font-size: 18px; }
        .drawer .close-btn { background: none; border: none; cursor: pointer; }
        .drawer-nav { padding: 20px; display: flex; flex-direction: column; gap: 16px; }
        .drawer-nav a { display: block; font-size: 16px; font-weight: 500; padding-bottom: 12px; border-bottom: 1px solid #f0f0f0; }

        
        .page-banner { background: url('https://images.unsplash.com/photo-1551288049-bebda4e38f71?auto=format&fit=crop&w=1920&q=80') center/cover; position: relative; padding: 100px 0; color: #fff; text-align: center; }
        .page-banner::before { content: ''; position: absolute; inset: 0; background: rgba(40,42,54,0.85); }
        .page-banner .container { position: relative; z-index: 2; }
        .page-banner h1 { font-size: 42px; margin-bottom: 20px; font-weight: 800; }
        .page-banner p { font-size: 18px; max-width: 600px; margin: 0 auto; color: rgba(255,255,255,0.8); }

        .about-content { padding: 80px 0; background: #fff; }
        .about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
        .about-text h2 { font-size: 32px; color: var(--primary-color); margin-bottom: 24px; }
        .about-text p { font-size: 16px; color: var(--text-muted); margin-bottom: 20px; line-height: 1.8; }
        .about-text ul { list-style: none; margin-bottom: 24px; }
        .about-text ul li { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; font-size: 16px; color: var(--text-main); }
        .about-text ul li svg { width: 20px; height: 20px; color: var(--accent-color); flex-shrink: 0; }
        .about-img { border-radius: 16px; overflow: hidden; box-shadow: 0 20px 40px rgba(0,0,0,0.1); }
        
        .core-values { padding: 80px 0; background: var(--bg-color); }
        .section-header { text-align: center; margin-bottom: 50px; }
        .section-header h2 { font-size: 32px; margin-bottom: 16px; color: var(--primary-color); }
        .value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .value-card { background: #fff; padding: 40px 24px; border-radius: 12px; text-align: center; box-shadow: 0 4px 20px rgba(0,0,0,0.03); border-top: 4px solid transparent; transition: all 0.3s; }
        .value-card:hover { border-top-color: var(--accent-color); transform: translateY(-5px); }
        .value-num { font-size: 48px; font-weight: 900; color: rgba(243,156,18,0.1); margin-bottom: -15px; }
        .value-card h3 { font-size: 20px; margin-bottom: 12px; }
        .value-card p { font-size: 14px; color: var(--text-muted); }

        
        .footer { background: var(--primary-dark); color: rgba(255,255,255,0.7); padding-top: 60px; }
        .footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.1); }
        .footer-brand .logo span { color: #fff; }
        .footer h3 { color: #fff; font-size: 16px; margin-bottom: 20px; }
        .footer ul li { margin-bottom: 12px; }
        .footer ul li a:hover { color: var(--accent-color); }
        .footer-bottom { padding: 24px 0; text-align: center; font-size: 13px; }

        @media (max-width: 992px) { .about-grid { grid-template-columns: 1fr; } .value-grid { grid-template-columns: repeat(2, 1fr); } .footer-inner { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 768px) { .desktop-nav { display: none; } .mobile-menu-btn { display: block; } .value-grid { grid-template-columns: 1fr; } .footer-inner { grid-template-columns: 1fr; } }