:root {
            --primary-color: rgb(90,200,250);
            --primary-hover: rgb(60,180,230);
            --primary-light: rgba(90,200,250,0.1);
            --text-dark: #1e293b;
            --text-normal: #475569;
            --text-light: #94a3b8;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --border-color: #e2e8f0;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif; background-color: var(--bg-body); color: var(--text-normal); line-height: 1.6; }
        a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
        ul { list-style: none; }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        
        .header { background-color: var(--bg-white); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 100; box-shadow: var(--shadow-sm); }
        .header .container { 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: 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-dark); white-space: nowrap; letter-spacing: 1px; }
        
        .nav-desktop { display: flex; gap: 30px; }
        .nav-desktop a { font-weight: 500; color: var(--text-dark); position: relative; padding: 5px 0; }
        .nav-desktop a::after { content: ''; position: absolute; bottom: 0; left: 50%; width: 0; height: 2px; background-color: var(--primary-color); transition: all 0.3s ease; transform: translateX(-50%); }
        .nav-desktop a:hover { color: var(--primary-color); }
        .nav-desktop a:hover::after { width: 100%; }
        
        .menu-btn { display: none; font-size: 24px; background: none; border: none; cursor: pointer; color: var(--text-dark); }
        
        
        .drawer-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 998; opacity: 0; visibility: hidden; transition: all 0.3s ease; }
        .drawer { position: fixed; top: 0; left: -300px; width: 280px; height: 100vh; background: var(--bg-white); z-index: 999; transition: all 0.3s ease; display: flex; flex-direction: column; box-shadow: var(--shadow-lg); }
        .drawer.active { left: 0; }
        .drawer-overlay.active { opacity: 1; visibility: visible; }
        .drawer-header { padding: 20px; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
        .drawer-close { background: none; border: none; font-size: 24px; cursor: pointer; color: var(--text-light); }
        .drawer-nav { padding: 20px 0; overflow-y: auto; flex-grow: 1; }
        .drawer-nav a { display: block; padding: 15px 20px; font-size: 16px; font-weight: 500; color: var(--text-dark); border-bottom: 1px solid var(--border-color); }
        .drawer-nav a:hover { background: var(--primary-light); color: var(--primary-color); padding-left: 25px; }

        
        .hero { background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%); padding: 80px 0; color: white; position: relative; overflow: hidden; }
        .hero::before { content: ''; position: absolute; top: -50%; right: -10%; width: 60%; height: 200%; background: radial-gradient(circle, var(--primary-light) 0%, transparent 70%); transform: rotate(-15deg); z-index: 1; }
        .hero .container { display: flex; align-items: center; justify-content: space-between; gap: 40px; position: relative; z-index: 2; }
        .hero-content { flex: 1; max-width: 600px; }
        .hero-title { font-size: 42px; font-weight: 800; line-height: 1.2; margin-bottom: 20px; }
        .hero-title span { color: var(--primary-color); }
        .hero-desc { font-size: 18px; color: #cbd5e1; margin-bottom: 30px; }
        .hero-actions { display: flex; gap: 15px; }
        .btn { display: inline-flex; align-items: center; justify-content: center; padding: 12px 28px; border-radius: 6px; font-weight: 600; transition: all 0.3s; cursor: pointer; }
        .btn-primary { background: var(--primary-color); color: #fff; box-shadow: 0 4px 15px rgba(90,200,250,0.3); }
        .btn-primary:hover { background: var(--primary-hover); transform: translateY(-2px); }
        .btn-outline { background: transparent; color: white; border: 1px solid rgba(255,255,255,0.3); }
        .btn-outline:hover { background: rgba(255,255,255,0.1); border-color: white; }
        .hero-visual { flex: 1; position: relative; display: flex; justify-content: center; }
        .hero-visual .abstract-shape { width: 400px; height: 300px; background: linear-gradient(45deg, var(--primary-color), #3b82f6); border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; animation: morphing 10s ease-in-out infinite; box-shadow: 0 20px 40px rgba(0,0,0,0.3); display: flex; align-items: center; justify-content: center; font-size: 48px; font-weight: bold; color: rgba(255,255,255,0.5); }
        @keyframes morphing { 0% { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; } 50% { border-radius: 70% 30% 30% 70% / 70% 70% 30% 30%; } 100% { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; } }

        
        .stats-bar { background: var(--bg-white); padding: 30px 0; border-bottom: 1px solid var(--border-color); box-shadow: var(--shadow-sm); }
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
        .stat-item h4 { font-size: 32px; color: var(--primary-color); font-weight: 800; margin-bottom: 5px; }
        .stat-item p { font-size: 14px; color: var(--text-light); }

        
        .section { padding: 80px 0; }
        .section-header { text-align: center; margin-bottom: 50px; }
        .section-title { font-size: 32px; color: var(--text-dark); font-weight: 800; margin-bottom: 15px; }
        .section-desc { font-size: 16px; color: var(--text-light); max-width: 600px; margin: 0 auto; }

        
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .feature-card { background: var(--bg-white); padding: 40px 30px; border-radius: 12px; box-shadow: var(--shadow-sm); transition: transform 0.3s; border-bottom: 3px solid transparent; }
        .feature-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: var(--primary-color); }
        .feature-icon { width: 60px; height: 60px; background: var(--primary-light); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 24px; color: var(--primary-color); margin-bottom: 20px; font-weight: bold; }
        .feature-title { font-size: 20px; font-weight: 700; color: var(--text-dark); margin-bottom: 15px; }
        .feature-desc { font-size: 14px; color: var(--text-normal); }

        
        .article-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .article-card { background: var(--bg-white); border-radius: 8px; overflow: hidden; box-shadow: var(--shadow-sm); transition: all 0.3s; display: flex; flex-direction: column; border: 1px solid var(--border-color); }
        .article-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .article-img { height: 180px; overflow: hidden; position: relative; background: #e2e8f0; }
        .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-badge { position: absolute; top: 10px; right: 10px; background: var(--primary-color); color: white; font-size: 12px; padding: 3px 8px; border-radius: 4px; font-weight: bold; }
        .article-content { padding: 20px; flex-grow: 1; display: flex; flex-direction: column; }
        .article-title { font-size: 16px; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .article-desc { font-size: 13px; color: var(--text-light); margin-bottom: 15px; flex-grow: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .article-meta { display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: #cbd5e1; border-top: 1px dashed var(--border-color); padding-top: 12px; }
        .article-meta span { display: flex; align-items: center; gap: 4px; }

        
        .brand-section { background: var(--bg-white); padding: 80px 0; border-top: 1px solid var(--border-color); }
        .brand-content { display: flex; align-items: center; gap: 50px; }
        .brand-text { flex: 1; }
        .brand-text h2 { font-size: 28px; color: var(--text-dark); margin-bottom: 20px; font-weight: 800; }
        .brand-text p { font-size: 16px; margin-bottom: 15px; color: var(--text-normal); }
        .brand-list { margin-top: 20px; }
        .brand-list li { position: relative; padding-left: 25px; margin-bottom: 10px; font-weight: 500; color: var(--text-dark); }
        .brand-list li::before { content: '✓'; position: absolute; left: 0; top: 0; color: var(--primary-color); font-weight: bold; }
        .brand-image { flex: 1; border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-md); background: #e2e8f0; height: 350px; display: flex; align-items: center; justify-content: center; }
        
        
        .cta-section { background: var(--primary-color); padding: 60px 0; text-align: center; color: white; }
        .cta-title { font-size: 32px; font-weight: 800; margin-bottom: 15px; }
        .cta-desc { font-size: 18px; margin-bottom: 30px; opacity: 0.9; }

        
        .footer { background: #0f172a; color: #94a3b8; padding: 60px 0 20px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-about .logo span { color: white; }
        .footer-desc { margin-top: 20px; font-size: 14px; line-height: 1.8; }
        .footer-title { color: white; font-size: 18px; font-weight: 700; margin-bottom: 20px; }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a { font-size: 14px; }
        .footer-links a:hover { color: var(--primary-color); padding-left: 5px; }
        .footer-bottom { border-top: 1px solid #1e293b; padding-top: 20px; display: flex; justify-content: space-between; align-items: center; font-size: 14px; }
        .footer-meta-links { display: flex; gap: 15px; }

        @media (max-width: 1024px) {
            .article-grid { grid-template-columns: repeat(3, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .menu-btn { display: block; }
            .hero .container { flex-direction: column; text-align: center; }
            .hero-actions { justify-content: center; }
            .hero-visual .abstract-shape { width: 100%; max-width: 300px; height: 200px; }
            .features-grid { grid-template-columns: 1fr; }
            .article-grid { grid-template-columns: repeat(2, 1fr); }
            .brand-content { flex-direction: column; }
            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            .footer-bottom { flex-direction: column; gap: 15px; text-align: center; }
        }
        @media (max-width: 480px) {
            .article-grid { grid-template-columns: 1fr; }
            .hero-title { font-size: 32px; }
            .stats-grid { grid-template-columns: 1fr; }
        }