:root {
            --primary: rgb(249,115,22);
            --primary-hover: #ea580c;
            --dark: #1f2937;
            --darker: #111827;
            --light: #f3f4f6;
            --white: #ffffff;
            --text-main: #374151;
            --text-muted: #6b7280;
            --border: #e5e7eb;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --transition: all 0.3s ease;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif; color: var(--text-main); background-color: var(--light); line-height: 1.6; }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        ul, li { list-style: none; }
        img { max-width: 100%; height: auto; display: block; }
        
        
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        .section { padding: 80px 0; background: var(--white); }
        .section.alt { background: var(--light); }
        
        
        .sec-title { text-align: center; font-size: 32px; font-weight: bold; color: var(--darker); margin-bottom: 15px; position: relative; }
        .sec-title::after { content: ''; display: block; width: 60px; height: 4px; background: var(--primary); margin: 15px auto 0; border-radius: 2px; }
        .sec-desc { text-align: center; color: var(--text-muted); margin-bottom: 50px; font-size: 16px; max-width: 600px; margin-left: auto; margin-right: auto; }

        
        .site-header { background: var(--darker); padding: 15px 0; position: sticky; top: 0; z-index: 100; box-shadow: var(--shadow); }
        .header-inner { display: flex; justify-content: space-between; align-items: center; }
        
        
        .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(--white); white-space: nowrap; letter-spacing: 1px; }
        
        
        .main-nav { display: flex; gap: 30px; align-items: center; }
        .main-nav a { color: var(--light); font-size: 16px; font-weight: 500; padding: 8px 0; position: relative; }
        .main-nav a:hover { color: var(--primary); }
        .main-nav a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--primary); transition: var(--transition); }
        .main-nav a:hover::after { width: 100%; }
        
        
        .menu-toggle { display: none; background: none; border: none; color: var(--white); font-size: 24px; cursor: pointer; }
        
        
        .drawer-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); z-index: 999; opacity: 0; visibility: hidden; transition: var(--transition); }
        .drawer-nav { position: fixed; top: 0; left: -300px; width: 280px; height: 100%; background: var(--darker); z-index: 1000; box-shadow: 2px 0 10px rgba(0,0,0,0.5); transition: transform 0.3s ease; display: flex; flex-direction: column; }
        .drawer-nav.active { transform: translateX(300px); }
        .drawer-overlay.active { opacity: 1; visibility: visible; }
        .drawer-header { padding: 20px; border-bottom: 1px solid rgba(255,255,255,0.1); display: flex; justify-content: space-between; align-items: center; }
        .drawer-close { background: none; border: none; color: var(--text-muted); font-size: 24px; cursor: pointer; }
        .drawer-close:hover { color: var(--primary); }
        .drawer-menu { padding: 20px 0; overflow-y: auto; flex-grow: 1; }
        .drawer-menu a { display: block; padding: 12px 25px; color: var(--light); font-size: 16px; border-left: 3px solid transparent; }
        .drawer-menu a:hover { background: rgba(255,255,255,0.05); color: var(--primary); border-left-color: var(--primary); }
        
        
        .hero { background: linear-gradient(rgba(17, 24, 39, 0.8), rgba(17, 24, 39, 0.9)), url('https://images.unsplash.com/photo-1518605368461-1ee15db37920?auto=format&fit=crop&w=1920&q=80') center/cover; padding: 120px 0; text-align: center; color: var(--white); }
        .hero h1 { font-size: 48px; font-weight: 800; margin-bottom: 20px; text-shadow: 0 2px 4px rgba(0,0,0,0.5); }
        .hero h1 span { color: var(--primary); }
        .hero p { font-size: 20px; color: #d1d5db; max-width: 800px; margin: 0 auto 40px; }
        .hero-btns { display: flex; justify-content: center; gap: 20px; }
        .btn-primary { background: var(--primary); color: var(--white); padding: 14px 32px; border-radius: 4px; font-size: 18px; font-weight: bold; border: 2px solid var(--primary); }
        .btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); transform: translateY(-2px); }
        .btn-outline { background: transparent; color: var(--white); padding: 14px 32px; border-radius: 4px; font-size: 18px; font-weight: bold; border: 2px solid var(--white); }
        .btn-outline:hover { background: var(--white); color: var(--darker); transform: translateY(-2px); }

        
        .stats-bar { background: var(--dark); border-top: 1px solid rgba(255,255,255,0.1); padding: 30px 0; color: var(--white); }
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
        .stat-item h4 { font-size: 32px; color: var(--primary); margin-bottom: 5px; font-weight: 900; }
        .stat-item p { font-size: 14px; color: var(--text-muted); }

        
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .feature-card { background: var(--white); padding: 40px 30px; border-radius: 8px; box-shadow: var(--shadow); text-align: center; border-bottom: 4px solid transparent; transition: var(--transition); }
        .feature-card:hover { border-bottom-color: var(--primary); transform: translateY(-5px); }
        .feature-icon { width: 64px; height: 64px; background: rgba(249,115,22,0.1); color: var(--primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 32px; margin: 0 auto 20px; font-weight: bold; }
        .feature-card h3 { font-size: 22px; color: var(--darker); margin-bottom: 15px; }
        .feature-card p { color: var(--text-muted); font-size: 15px; }

        
        .article-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 25px; }
        .article-card { background: var(--white); border-radius: 8px; overflow: hidden; box-shadow: var(--shadow); transition: var(--transition); display: flex; flex-direction: column; }
        .article-card:hover { box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1); transform: translateY(-3px); }
        .article-img { width: 100%; height: 180px; object-fit: cover; }
        .article-content { padding: 20px; flex-grow: 1; display: flex; flex-direction: column; }
        .article-tags { margin-bottom: 10px; display: flex; gap: 8px; flex-wrap: wrap; }
        .article-tags span { background: rgba(249,115,22,0.1); color: var(--primary); font-size: 12px; padding: 3px 8px; border-radius: 4px; }
        .article-title { font-size: 18px; font-weight: bold; color: var(--darker); margin-bottom: 10px; 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-muted); margin-bottom: 15px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; flex-grow: 1; }
        .article-meta { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: #9ca3af; border-top: 1px solid var(--border); padding-top: 15px; }
        
        
        .dual-section { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
        .list-style { display: flex; flex-direction: column; gap: 20px; }
        .list-card { display: flex; gap: 20px; background: var(--white); padding: 15px; border-radius: 8px; box-shadow: var(--shadow); align-items: center; transition: var(--transition); }
        .list-card:hover { transform: translateX(5px); border-left: 4px solid var(--primary); }
        .list-card img { width: 120px; height: 90px; object-fit: cover; border-radius: 4px; }
        .list-card-info { flex-grow: 1; }
        .list-card-title { font-size: 16px; font-weight: bold; color: var(--darker); margin-bottom: 8px; }
        .list-card-meta { font-size: 13px; color: var(--text-muted); display: flex; gap: 15px; }

        
        .cta-section { background: var(--primary); padding: 80px 0; text-align: center; color: var(--white); }
        .cta-section h2 { font-size: 36px; font-weight: bold; margin-bottom: 20px; }
        .cta-section p { font-size: 18px; margin-bottom: 30px; opacity: 0.9; }
        .cta-btn { background: var(--darker); color: var(--white); padding: 15px 40px; font-size: 18px; font-weight: bold; border-radius: 4px; border: none; display: inline-block; }
        .cta-btn:hover { background: #000; }

        
        .site-footer { background: var(--darker); 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; }
        
        .site-footer .logo span { color: var(--white); }
        .footer-about { font-size: 14px; line-height: 1.8; margin-bottom: 20px; }
        .footer-widget h4 { color: var(--white); font-size: 18px; font-weight: bold; margin-bottom: 20px; position: relative; padding-bottom: 10px; }
        .footer-widget h4::after { content: ''; position: absolute; left: 0; bottom: 0; width: 30px; height: 2px; background: var(--primary); }
        .footer-links li { margin-bottom: 12px; }
        .footer-links a { font-size: 14px; display: inline-block; }
        .footer-links a:hover { color: var(--primary); transform: translateX(5px); }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; display: flex; justify-content: space-between; align-items: center; font-size: 14px; }
        .footer-bottom-links { display: flex; gap: 20px; }

        
        @media (max-width: 1024px) {
            .article-grid { grid-template-columns: repeat(2, 1fr); }
            .dual-section { grid-template-columns: 1fr; }
        }
        @media (max-width: 768px) {
            .main-nav { display: none; }
            .menu-toggle { display: block; }
            .hero h1 { font-size: 32px; }
            .hero p { font-size: 16px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px 10px; }
            .features-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .list-card { flex-direction: column; align-items: flex-start; }
            .list-card img { width: 100%; height: 180px; }
            .footer-bottom { flex-direction: column; gap: 15px; text-align: center; }
        }