:root {
            --primary-color: rgb(15,118,110);
            --primary-hover: rgb(13,100,93);
            --primary-light: rgba(15,118,110,0.05);
            --text-main: #1f2937;
            --text-muted: #6b7280;
            --bg-body: #f9fafb;
            --bg-card: #ffffff;
            --border-color: #e5e7eb;
            --header-h: 72px;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif; color: var(--text-main); background: var(--bg-body); line-height: 1.6; }
        a { color: inherit; text-decoration: none; transition: all 0.3s ease; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        
        .btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 24px; border-radius: 6px; font-weight: 500; cursor: pointer; transition: all 0.3s; }
        .btn-primary { background: var(--primary-color); color: #fff; box-shadow: 0 4px 12px rgba(15,118,110,0.2); }
        .btn-primary:hover { background: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(15,118,110,0.3); }
        .btn-outline { border: 1px solid var(--primary-color); color: var(--primary-color); }
        .btn-outline:hover { background: var(--primary-color); color: #fff; }

        
        .header { position: sticky; top: 0; background: rgba(255,255,255,0.95); backdrop-filter: blur(10px); box-shadow: 0 1px 3px rgba(0,0,0,0.05); z-index: 100; height: var(--header-h); }
        .header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
        .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(--primary-color); white-space: nowrap; }
        
        .desktop-nav { display: flex; gap: 30px; }
        .desktop-nav a { font-size: 16px; font-weight: 500; color: var(--text-main); position: relative; padding: 5px 0; }
        .desktop-nav a:hover { color: var(--primary-color); }
        .desktop-nav a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--primary-color); transition: width 0.3s; }
        .desktop-nav a:hover::after { width: 100%; }
        
        .header-actions { display: flex; align-items: center; gap: 15px; }
        .menu-toggle { display: none; font-size: 24px; cursor: pointer; color: var(--text-main); }

        
        .drawer-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 999; opacity: 0; visibility: hidden; transition: all 0.3s; }
        .drawer { position: fixed; top: 0; left: -300px; width: 280px; height: 100vh; background: #fff; z-index: 1000; transition: all 0.3s; display: flex; flex-direction: column; box-shadow: 4px 0 15px rgba(0,0,0,0.1); }
        .drawer-active .drawer-overlay { opacity: 1; visibility: visible; }
        .drawer-active .drawer { left: 0; }
        .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; color: var(--text-muted); }
        .drawer-nav { padding: 20px; overflow-y: auto; flex: 1; }
        .drawer-nav a { display: block; padding: 12px 0; font-size: 16px; font-weight: 500; border-bottom: 1px dashed var(--border-color); }
        .drawer-nav a:hover { color: var(--primary-color); padding-left: 10px; }

        
        .hero { padding: 80px 0; background: linear-gradient(135deg, var(--bg-body) 0%, var(--primary-light) 100%); overflow: hidden; }
        .hero-inner { display: flex; align-items: center; gap: 50px; }
        .hero-content { flex: 1; }
        .hero-label { display: inline-block; padding: 4px 12px; background: rgba(15,118,110,0.1); color: var(--primary-color); border-radius: 20px; font-size: 14px; font-weight: 600; margin-bottom: 20px; }
        .hero-title { font-size: 48px; font-weight: 800; line-height: 1.2; margin-bottom: 24px; color: #111; }
        .hero-title span { color: var(--primary-color); }
        .hero-desc { font-size: 18px; color: var(--text-muted); margin-bottom: 32px; max-width: 90%; }
        .hero-actions { display: flex; gap: 16px; }
        .hero-visual { flex: 1; position: relative; }
        .hero-visual img { width: 100%; border-radius: 20px; box-shadow: 0 20px 40px rgba(0,0,0,0.1); position: relative; z-index: 2; }
        .hero-visual::before { content: ''; position: absolute; width: 100%; height: 100%; background: var(--primary-color); top: -20px; right: -20px; border-radius: 20px; opacity: 0.1; z-index: 1; }

        
        .section { padding: 80px 0; }
        .section-header { text-align: center; margin-bottom: 50px; }
        .section-title { font-size: 32px; font-weight: 700; margin-bottom: 16px; }
        .section-desc { font-size: 16px; color: var(--text-muted); max-width: 600px; margin: 0 auto; }
        
        .features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
        .feature-card { background: var(--bg-card); padding: 30px; border-radius: 12px; box-shadow: 0 4px 20px rgba(0,0,0,0.03); text-align: center; transition: all 0.3s; border: 1px solid transparent; }
        .feature-card:hover { transform: translateY(-5px); border-color: var(--primary-light); box-shadow: 0 10px 30px rgba(15,118,110,0.1); }
        .feature-icon { width: 60px; height: 60px; background: var(--primary-light); color: var(--primary-color); border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: 28px; margin-bottom: 20px; font-weight: bold; }
        .feature-title { font-size: 20px; font-weight: 600; margin-bottom: 12px; }
        .feature-desc { font-size: 14px; color: var(--text-muted); }

        
        .article-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .article-card { background: var(--bg-card); border-radius: 12px; overflow: hidden; box-shadow: 0 4px 15px rgba(0,0,0,0.05); transition: all 0.3s; display: flex; flex-direction: column; }
        .article-card:hover { transform: translateY(-5px); box-shadow: 0 12px 25px rgba(0,0,0,0.1); }
        .article-img { display: block; height: 180px; overflow: hidden; position: relative; }
        .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-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
        .article-tags { margin-bottom: 10px; }
        .article-tag { font-size: 12px; color: var(--primary-color); background: var(--primary-light); padding: 2px 8px; border-radius: 4px; display: inline-block; }
        .article-title { font-size: 18px; font-weight: 600; margin-bottom: 10px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .article-desc { font-size: 14px; color: var(--text-muted); margin-bottom: 15px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; flex: 1; }
        .article-meta { display: flex; justify-content: space-between; font-size: 12px; color: #9ca3af; border-top: 1px solid var(--border-color); padding-top: 15px; }
        .article-meta span { display: flex; align-items: center; gap: 4px; }

        
        .info-section { background: var(--primary-light); }
        .info-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
        .info-block { background: var(--bg-card); padding: 30px; border-radius: 16px; }
        .info-block-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; border-bottom: 2px solid var(--bg-body); padding-bottom: 10px; }
        .info-block-title { font-size: 22px; font-weight: 700; color: var(--primary-color); }
        .info-list li { padding: 12px 0; border-bottom: 1px dashed var(--border-color); }
        .info-list li:last-child { border-bottom: none; }
        .info-list a { display: flex; justify-content: space-between; align-items: center; }
        .info-list a:hover { color: var(--primary-color); }
        .info-list .date { font-size: 13px; color: var(--text-muted); }

        
        .brand-section { background: #fff; text-align: center; }
        .brand-stats { display: flex; justify-content: center; gap: 60px; margin-top: 40px; flex-wrap: wrap; }
        .stat-item { text-align: center; }
        .stat-num { font-size: 36px; font-weight: 800; color: var(--primary-color); margin-bottom: 8px; }
        .stat-text { font-size: 15px; color: var(--text-muted); }

        
        .cta-section { background: var(--primary-color); color: #fff; padding: 60px 0; text-align: center; position: relative; overflow: hidden; }
        .cta-section::before { content: ''; position: absolute; width: 300px; height: 300px; background: rgba(255,255,255,0.1); border-radius: 50%; top: -100px; left: -50px; }
        .cta-title { font-size: 32px; font-weight: 700; margin-bottom: 15px; position: relative; z-index: 2; }
        .cta-desc { font-size: 16px; opacity: 0.9; margin-bottom: 30px; position: relative; z-index: 2; }

        
        .footer { background: #111827; color: #d1d5db; 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 span { color: #fff; }
        .footer-desc { font-size: 14px; line-height: 1.8; margin-bottom: 20px; opacity: 0.8; }
        .footer-title { color: #fff; font-size: 18px; font-weight: 600; margin-bottom: 20px; position: relative; padding-bottom: 10px; }
        .footer-title::after { content: ''; position: absolute; left: 0; bottom: 0; width: 30px; height: 2px; background: var(--primary-color); }
        .footer-links li { margin-bottom: 12px; }
        .footer-links a { font-size: 14px; opacity: 0.8; }
        .footer-links a:hover { opacity: 1; color: var(--primary-color); padding-left: 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: 13px; opacity: 0.6; }
        .footer-bottom-links a { margin-left: 15px; }

        @media (max-width: 992px) {
            .hero-inner { flex-direction: column; text-align: center; }
            .hero-title { font-size: 36px; }
            .hero-desc { margin: 0 auto 30px; }
            .hero-actions { justify-content: center; }
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .article-grid { grid-template-columns: repeat(2, 1fr); }
            .info-layout { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .desktop-nav, .header-actions .btn { display: none; }
            .menu-toggle { display: block; }
            .features-grid { grid-template-columns: 1fr; }
            .article-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .brand-stats { gap: 30px; }
            .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
        }