:root {
            --primary: rgb(8,145,178);
            --primary-hover: #067793;
            --primary-light: rgba(8,145,178,0.1);
            --text-main: #1f2937;
            --text-muted: #6b7280;
            --bg-body: #f9fafb;
            --bg-white: #ffffff;
            --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;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif; background-color: var(--bg-body); color: var(--text-main); line-height: 1.6; }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        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); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; box-shadow: 0 1px 3px rgba(0,0,0,0.05); }
        .header-inner { display: flex; align-items: center; justify-content: space-between; 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-main); white-space: nowrap; }
        .desktop-nav { display: flex; gap: 24px; align-items: center; }
        .desktop-nav a { font-size: 16px; font-weight: 500; color: var(--text-main); padding: 8px 12px; border-radius: 6px; }
        .desktop-nav a:hover { color: var(--primary); background: var(--primary-light); }
        .btn-header { background: var(--primary); color: #fff !important; padding: 8px 20px !important; border-radius: 20px !important; }
        .btn-header:hover { background: var(--primary-hover); }
        .mobile-menu-btn { display: none; background: none; border: none; cursor: pointer; color: var(--text-main); }
        
        
        .mobile-drawer { position: fixed; inset: 0; z-index: 999; pointer-events: none; }
        .drawer-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.5); opacity: 0; transition: opacity 0.3s; }
        .drawer-content { position: absolute; top: 0; bottom: 0; left: -300px; width: 280px; background: var(--bg-white); transition: transform 0.3s ease; display: flex; flex-direction: column; }
        .mobile-drawer.active { pointer-events: auto; }
        .mobile-drawer.active .drawer-overlay { opacity: 1; }
        .mobile-drawer.active .drawer-content { transform: translateX(300px); }
        .drawer-header { padding: 20px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
        .drawer-close { background: none; border: none; cursor: pointer; color: var(--text-muted); }
        .drawer-nav { padding: 20px; display: flex; flex-direction: column; gap: 15px; overflow-y: auto; }
        .drawer-nav a { display: block; font-size: 16px; padding: 10px 15px; border-radius: 8px; font-weight: 500; }
        .drawer-nav a:hover { background: var(--primary-light); color: var(--primary); }

        
        .hero { background: linear-gradient(135deg, rgba(8,145,178,0.95), rgba(22,78,99,0.95)), url('https://images.unsplash.com/photo-1551288049-bebda4e38f71?auto=format&fit=crop&q=80'); background-size: cover; background-position: center; color: #fff; padding: 100px 0; overflow: hidden; }
        .hero-inner { display: flex; align-items: center; gap: 50px; }
        .hero-text { flex: 1; }
        .hero-text h1 { font-size: 48px; font-weight: 800; line-height: 1.2; margin-bottom: 20px; }
        .hero-text p { font-size: 18px; opacity: 0.9; margin-bottom: 30px; max-width: 500px; }
        .hero-actions { display: flex; gap: 16px; }
        .btn-primary { background: #fff; color: var(--primary); padding: 14px 28px; border-radius: 30px; font-weight: bold; font-size: 16px; display: inline-flex; align-items: center; gap: 8px; }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.2); }
        .btn-secondary { background: rgba(255,255,255,0.2); border: 1px solid rgba(255,255,255,0.4); color: #fff; padding: 14px 28px; border-radius: 30px; font-weight: bold; font-size: 16px; backdrop-filter: blur(4px); }
        .btn-secondary:hover { background: rgba(255,255,255,0.3); }
        .hero-visual { flex: 1; position: relative; }
        .hero-visual img { border-radius: 12px; box-shadow: 0 20px 40px rgba(0,0,0,0.3); transform: perspective(1000px) rotateY(-5deg); transition: transform 0.5s; }
        .hero-visual img:hover { transform: perspective(1000px) rotateY(0deg); }

        
        .stats-bar { background: var(--bg-white); border-bottom: 1px solid var(--border); padding: 30px 0; }
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
        .stat-item h4 { font-size: 28px; color: var(--primary); font-weight: bold; margin-bottom: 5px; }
        .stat-item p { color: var(--text-muted); font-size: 14px; }

        
        .section { padding: 80px 0; }
        .section-header { text-align: center; margin-bottom: 50px; }
        .section-header h2 { font-size: 32px; color: var(--text-main); margin-bottom: 12px; position: relative; display: inline-block; }
        .section-header h2::after { content: ''; display: block; width: 60px; height: 4px; background: var(--primary); margin: 12px auto 0; border-radius: 2px; }
        .section-header p { color: var(--text-muted); font-size: 16px; }

        
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .feature-card { background: var(--bg-white); padding: 40px 30px; border-radius: 12px; text-align: center; box-shadow: var(--shadow); transition: var(--transition); border-top: 4px solid transparent; }
        .feature-card:hover { transform: translateY(-5px); border-top-color: var(--primary); }
        .feature-icon { width: 64px; height: 64px; background: var(--primary-light); color: var(--primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; font-size: 32px; }
        .feature-card h3 { font-size: 20px; margin-bottom: 12px; color: var(--text-main); }
        .feature-card p { color: var(--text-muted); font-size: 15px; }

        
        .cards-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .post-card { background: var(--bg-white); border-radius: 12px; overflow: hidden; box-shadow: var(--shadow); display: flex; flex-direction: column; transition: var(--transition); }
        .post-card:hover { transform: translateY(-4px); box-shadow: 0 10px 20px rgba(0,0,0,0.1); }
        .card-img { display: block; position: relative; padding-top: 60%; overflow: hidden; }
        .card-img img { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
        .post-card:hover .card-img img { transform: scale(1.05); }
        .card-content { padding: 20px; flex: 1; display: flex; flex-direction: column; }
        .card-tags { margin-bottom: 10px; display: flex; gap: 8px; flex-wrap: wrap; }
        .card-tags span, .card-tags a { font-size: 12px; background: var(--primary-light); color: var(--primary); padding: 4px 8px; border-radius: 4px; }
        .card-title { font-size: 18px; margin-bottom: 10px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .card-desc { font-size: 14px; color: var(--text-muted); margin-bottom: 15px; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .card-meta { display: flex; justify-content: space-between; font-size: 13px; color: #9ca3af; margin-bottom: 15px; border-top: 1px solid var(--border); padding-top: 15px; }
        .card-readmore { display: inline-block; color: var(--primary); font-weight: 500; font-size: 14px; }
        .card-readmore:hover { color: var(--primary-hover); }

        
        .intro-sec { background: var(--bg-white); padding: 80px 0; border-top: 1px solid var(--border); }
        .intro-inner { display: flex; gap: 60px; align-items: center; }
        .intro-text { flex: 1; }
        .intro-text h2 { font-size: 32px; margin-bottom: 20px; }
        .intro-text p { color: var(--text-muted); margin-bottom: 20px; font-size: 16px; }
        .intro-list { margin-bottom: 30px; }
        .intro-list li { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; color: var(--text-main); font-weight: 500; }
        .intro-list li svg { color: var(--primary); }
        .intro-img { flex: 1; }
        .intro-img img { border-radius: 12px; box-shadow: var(--shadow); }

        
        .cta { background: var(--primary); color: #fff; padding: 60px 0; text-align: center; }
        .cta h2 { font-size: 32px; margin-bottom: 20px; }
        .cta p { font-size: 18px; opacity: 0.9; margin-bottom: 30px; }
        
        
        .footer { background: #111827; color: #9ca3af; padding: 60px 0 0; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-logo span { color: #fff; }
        .footer-desc { margin-top: 15px; font-size: 14px; line-height: 1.8; }
        .footer-title { color: #fff; font-size: 18px; font-weight: 600; margin-bottom: 20px; }
        .footer-links ul li { margin-bottom: 12px; }
        .footer-links ul li a:hover { color: var(--primary); }
        .footer-contact p { margin-bottom: 10px; font-size: 14px; }
        .footer-bottom { border-top: 1px solid #374151; padding: 20px 0; text-align: center; font-size: 14px; }

        @media (max-width: 992px) {
            .hero-inner, .intro-inner { flex-direction: column; text-align: center; }
            .hero-actions { justify-content: center; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .cards-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-menu-btn { display: block; }
            .hero-text h1 { font-size: 36px; }
            .features-grid, .cards-grid, .footer-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
        }