:root {
            --primary: rgb(30,64,175);
            --primary-hover: rgb(25, 54, 150);
            --bg-body: #f4f6f9;
            --bg-white: #ffffff;
            --text-dark: #1a1a1a;
            --text-gray: #666666;
            --text-light: #999999;
            --border-color: #e5e7eb;
            --shadow: 0 4px 12px rgba(0,0,0,0.05);
            --shadow-hover: 0 10px 20px rgba(30,64,175,0.15);
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; background-color: var(--bg-body); color: var(--text-dark); line-height: 1.6; }
        a { text-decoration: none; color: inherit; transition: color 0.3s; }
        ul { list-style: none; }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        
        .header { background: var(--bg-white); box-shadow: 0 2px 10px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 100; }
        .header-inner { display: flex; justify-content: space-between; align-items: center; height: 70px; }
        
        .logo { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
        .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-dark); white-space: nowrap; }
        
        .nav-desktop { display: flex; gap: 30px; align-items: center; }
        .nav-desktop a { font-size: 16px; font-weight: 500; color: var(--text-dark); }
        .nav-desktop a:hover { color: var(--primary); }
        
        .menu-btn { display: none; font-size: 24px; cursor: pointer; background: none; border: none; color: var(--text-dark); }
        
        
        .drawer-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 998; opacity: 0; transition: opacity 0.3s; }
        .drawer { position: fixed; top: 0; left: -300px; width: 280px; height: 100%; background: var(--bg-white); z-index: 999; transition: left 0.3s ease; box-shadow: 2px 0 10px rgba(0,0,0,0.1); overflow-y: auto; }
        .drawer.active { left: 0; }
        .drawer-overlay.active { display: block; opacity: 1; }
        .drawer-header { padding: 20px; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
        .drawer-close { font-size: 24px; cursor: pointer; background: none; border: none; color: var(--text-gray); }
        .drawer-nav { padding: 20px; display: flex; flex-direction: column; gap: 15px; }
        .drawer-nav a { display: block; font-size: 16px; font-weight: 500; padding: 10px 0; border-bottom: 1px dashed var(--border-color); }
        
        
        .btn { display: inline-block; padding: 12px 24px; background: var(--primary); color: #fff; border-radius: 6px; font-weight: 600; text-align: center; transition: all 0.3s; }
        .btn:hover { background: var(--primary-hover); transform: translateY(-2px); box-shadow: var(--shadow-hover); color:#fff; }
        .btn-outline { background: transparent; border: 1px solid var(--primary); color: var(--primary); }
        .btn-outline:hover { background: var(--primary); color: #fff; }

        
        .hero { background: linear-gradient(135deg, #ffffff 0%, #e6f0fa 100%); padding: 80px 0; overflow: hidden; }
        .hero-inner { display: flex; align-items: center; gap: 60px; }
        .hero-content { flex: 1; }
        .hero-tag { display: inline-block; padding: 6px 12px; background: rgba(30,64,175,0.1); color: var(--primary); border-radius: 20px; font-size: 14px; font-weight: 600; margin-bottom: 20px; }
        .hero-title { font-size: 42px; font-weight: 800; line-height: 1.3; margin-bottom: 20px; color: var(--text-dark); }
        .hero-desc { font-size: 18px; color: var(--text-gray); margin-bottom: 30px; line-height: 1.7; }
        .hero-actions { display: flex; gap: 15px; }
        .hero-image { flex: 1; position: relative; }
        .hero-image-mockup { background: var(--bg-white); border-radius: 12px; box-shadow: var(--shadow-hover); padding: 20px; border: 1px solid var(--border-color); }
        .hero-image-mockup img { border-radius: 8px; width: 100%; height: auto; }

        
        .section { padding: 80px 0; }
        .section-header { text-align: center; margin-bottom: 50px; }
        .section-title { font-size: 32px; font-weight: 700; margin-bottom: 15px; }
        .section-desc { font-size: 16px; color: var(--text-gray); max-width: 600px; margin: 0 auto; }
        
        .features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; }
        .feature-card { background: var(--bg-white); padding: 40px 30px; border-radius: 12px; text-align: center; box-shadow: var(--shadow); transition: transform 0.3s; }
        .feature-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
        .feature-icon { width: 64px; height: 64px; background: rgba(30,64,175,0.1); color: var(--primary); border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 32px; margin: 0 auto 20px; }
        .feature-title { font-size: 20px; font-weight: 600; margin-bottom: 15px; }
        .feature-desc { color: var(--text-gray); font-size: 15px; line-height: 1.6; }

        
        .article-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 30px; }
        .article-card { background: var(--bg-white); border-radius: 12px; overflow: hidden; box-shadow: var(--shadow); display: flex; flex-direction: column; transition: transform 0.3s; border: 1px solid var(--border-color); }
        .article-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
        .article-img { width: 100%; height: 200px; position: relative; overflow: hidden; background: #eee; }
        .article-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
        .article-card:hover .article-img img { transform: scale(1.05); }
        .article-content { padding: 25px; flex: 1; display: flex; flex-direction: column; }
        .article-title { font-size: 18px; font-weight: 700; margin-bottom: 12px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .article-summary { font-size: 14px; color: var(--text-gray); margin-bottom: 20px; flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
        .article-meta { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; font-size: 13px; color: var(--text-light); padding-top: 15px; border-top: 1px solid var(--border-color); }
        .article-meta span { display: flex; align-items: center; gap: 5px; }
        .article-tags { margin-top: 10px; width: 100%; display: flex; gap: 8px; flex-wrap: wrap; }
        .article-tags span { background: var(--bg-body); padding: 4px 8px; border-radius: 4px; color: var(--primary); font-size: 12px; }

        
        .cta { background: var(--primary); color: #fff; padding: 70px 0; text-align: center; }
        .cta-title { font-size: 32px; font-weight: 700; margin-bottom: 20px; }
        .cta-desc { font-size: 18px; opacity: 0.9; margin-bottom: 30px; max-width: 700px; margin-left: auto; margin-right: auto; }
        .cta .btn { background: #fff; color: var(--primary); font-size: 16px; }
        .cta .btn:hover { background: #f0f0f0; box-shadow: 0 4px 15px rgba(0,0,0,0.2); }

        
        .footer { background: #111827; color: #9ca3af; padding: 60px 0 20px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-logo { margin-bottom: 20px; }
        .footer-logo .logo span { color: #fff; }
        .footer-desc { font-size: 14px; line-height: 1.8; margin-bottom: 20px; max-width: 300px; }
        .footer-title { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 20px; }
        .footer-links li { margin-bottom: 12px; }
        .footer-links a { font-size: 14px; transition: color 0.3s; }
        .footer-links a:hover { color: #fff; text-decoration: underline; }
        .footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid #374151; font-size: 13px; }

        
        @media (max-width: 992px) {
            .hero-inner { flex-direction: column; text-align: center; }
            .hero-actions { justify-content: center; }
            .hero-desc { margin-left: auto; margin-right: auto; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .menu-btn { display: block; }
            .hero-title { font-size: 32px; }
            .footer-grid { grid-template-columns: 1fr; }
        }