:root {
            --primary: rgb(139,233,253);
            --primary-dark: #5ee0fa;
            --text-main: #1a1a1a;
            --text-sub: #666;
            --bg-light: #f4f6f8;
            --bg-white: #ffffff;
            --border: #e2e8f0;
        }
        * { box-sizing: border-box; }
        body { font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif; color: var(--text-main); background: var(--bg-light); line-height: 1.6; margin: 0; padding: 0; }
        a { color: inherit; text-decoration: none; transition: 0.3s; }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; }
        
        .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; }

        .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 { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; height: 70px; padding: 0 20px; }
        .desktop-nav { display: flex; gap: 24px; align-items: center; }
        .desktop-nav a { font-weight: 500; font-size: 16px; }
        .desktop-nav a:hover { color: var(--primary-dark); }
        .menu-btn { display: none; font-size: 28px; cursor: pointer; color: var(--text-main); line-height: 1; }

        .mobile-drawer { position: fixed; top: 0; left: -320px; width: 300px; height: 100vh; background: var(--bg-white); z-index: 999; transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1); box-shadow: 2px 0 15px rgba(0,0,0,0.1); overflow-y: auto; padding: 20px; }
        .mobile-drawer.active { left: 0; }
        .drawer-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 30px; padding-bottom: 15px; border-bottom: 1px solid var(--border); }
        .drawer-close { font-size: 28px; cursor: pointer; color: var(--text-sub); }
        .drawer-nav a { display: block; padding: 14px 0; border-bottom: 1px solid var(--border); font-size: 16px; font-weight: 500; }
        .drawer-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); z-index: 998; display: none; opacity: 0; transition: 0.3s; }
        .drawer-overlay.active { display: block; opacity: 1; }

        .hero { background: linear-gradient(135deg, #ffffff 0%, #e0f7fa 100%); padding: 80px 20px; overflow: hidden; position: relative; }
        .hero::before { content:''; position:absolute; top:-50%; right:-10%; width:600px; height:600px; background:var(--primary); opacity:0.1; border-radius:50%; filter:blur(80px); }
        .hero-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; gap: 50px; position: relative; z-index: 2; }
        .hero-text { flex: 1.2; }
        .hero-text h1 { font-size: 46px; line-height: 1.2; margin-bottom: 20px; color: var(--text-main); font-weight: 800; }
        .hero-text p { font-size: 18px; color: var(--text-sub); margin-bottom: 35px; line-height: 1.8; }
        .btn-primary { display: inline-flex; align-items: center; justify-content: center; background: var(--primary); color: #111; padding: 14px 32px; border-radius: 8px; font-weight: bold; font-size: 16px; box-shadow: 0 4px 15px rgba(139,233,253,0.4); text-decoration: none; border: none; cursor: pointer; }
        .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(139,233,253,0.6); color: #111; }
        .btn-secondary { display: inline-flex; align-items: center; justify-content: center; border: 2px solid var(--primary-dark); color: var(--text-main); padding: 12px 30px; border-radius: 8px; font-weight: bold; font-size: 16px; margin-left: 15px; background: transparent; }
        .btn-secondary:hover { background: rgba(139,233,253,0.1); }
        .hero-img { flex: 1; text-align: right; }
        .hero-img img { width: 100%; border-radius: 16px; box-shadow: 0 20px 50px rgba(0,0,0,0.15); transform: perspective(1000px) rotateY(-5deg); transition: 0.5s; }
        .hero-img img:hover { transform: perspective(1000px) rotateY(0deg); }
        .data-bar { display: flex; gap: 40px; margin-top: 40px; border-top: 1px solid rgba(0,0,0,0.08); padding-top: 25px; }
        .data-item strong { font-size: 28px; color: var(--text-main); display: block; line-height: 1.2; }
        .data-item span { font-size: 14px; color: var(--text-sub); }

        .section { padding: 80px 20px; }
        .container { max-width: 1200px; margin: 0 auto; }
        .section-header { text-align: center; margin-bottom: 50px; }
        .section-header h2 { font-size: 34px; color: var(--text-main); margin-bottom: 15px; }
        .section-header p { font-size: 16px; color: var(--text-sub); max-width: 600px; margin: 0 auto; }

        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .feature-card { background: var(--bg-white); padding: 40px 30px; border-radius: 16px; box-shadow: 0 4px 20px rgba(0,0,0,0.03); transition: 0.3s; border: 1px solid transparent; }
        .feature-card:hover { transform: translateY(-8px); box-shadow: 0 12px 30px rgba(0,0,0,0.08); border-color: var(--primary); }
        .feature-icon { width: 64px; height: 64px; background: rgba(139,233,253,0.2); border-radius: 16px; display: inline-flex; align-items: center; justify-content: center; margin-bottom: 25px; font-size: 28px; color: var(--primary-dark); }
        .feature-card h3 { font-size: 22px; margin-bottom: 15px; color: var(--text-main); }
        .feature-card p { color: var(--text-sub); font-size: 15px; }

        .article-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 30px; }
        .article-card { background: var(--bg-white); border-radius: 12px; overflow: hidden; box-shadow: 0 4px 15px rgba(0,0,0,0.04); display: flex; flex-direction: column; transition: 0.3s; }
        .article-card:hover { transform: translateY(-5px); box-shadow: 0 10px 25px rgba(0,0,0,0.1); }
        .article-img { display: block; width: 100%; height: 180px; overflow: hidden; position: relative; }
        .article-img img { width: 100%; height: 100%; object-fit: cover; transition: 0.5s; }
        .article-card:hover .article-img img { transform: scale(1.08); }
        .article-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
        .article-meta { font-size: 12px; color: var(--text-sub); margin-bottom: 10px; display: flex; justify-content: space-between; }
        .article-title { font-size: 18px; font-weight: bold; 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-sub); margin-bottom: 15px; flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
        .article-footer { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--border); padding-top: 15px; font-size: 13px; }
        .article-tags { color: var(--primary-dark); font-weight: 500; }
        .read-more { color: var(--text-main); font-weight: bold; }
        .read-more:hover { color: var(--primary-dark); }

        .cta-section { background: #111; color: #fff; padding: 80px 20px; text-align: center; position: relative; overflow: hidden; }
        .cta-section::after { content:''; position:absolute; bottom:0; left:50%; transform:translateX(-50%); width:100%; height:10px; background:var(--primary); }
        .cta-inner { max-width: 800px; margin: 0 auto; position: relative; z-index: 2; }
        .cta-inner h2 { font-size: 36px; margin-bottom: 20px; font-weight: 800; }
        .cta-inner p { font-size: 18px; color: #aaa; margin-bottom: 35px; }

        .footer { background: #1a1a1a; color: #aaa; padding: 60px 20px 20px; border-top: 5px solid #222; }
        .footer-inner { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-logo .logo span { color: #fff; }
        .footer-desc { margin-top: 20px; font-size: 14px; line-height: 1.8; max-width: 400px; }
        .footer-title { color: #fff; font-size: 18px; margin-bottom: 20px; font-weight: bold; }
        .footer-nav { list-style: none; padding: 0; margin: 0; }
        .footer-nav li { margin-bottom: 12px; }
        .footer-nav a { color: #aaa; }
        .footer-nav a:hover { color: var(--primary); padding-left: 5px; }
        .footer-bottom { max-width: 1200px; margin: 0 auto; border-top: 1px solid #333; padding-top: 20px; display: flex; justify-content: space-between; align-items: center; font-size: 14px; flex-wrap: wrap; gap: 15px; }
        .footer-links a { color: #aaa; margin-left: 15px; }
        .footer-links a:hover { color: var(--primary); }

        @media(max-width: 992px) {
            .hero-inner { flex-direction: column; text-align: center; }
            .hero-img { margin-top: 40px; transform: none; }
            .hero-img img { transform: none; }
            .data-bar { justify-content: center; }
            .grid-3 { grid-template-columns: 1fr; }
            .footer-inner { grid-template-columns: 1fr; }
            .desktop-nav { display: none; }
            .menu-btn { display: block; }
        }