:root{--primary: #0B3D91;--primary-light: #1d5fd1;--bg: #ffffff;--text: #1f2937;--sub: #6b7280;--border: #e5e7eb}*{box-sizing:border-box}html,body,#app{margin:0;padding:0;min-height:100vh}body{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif;color:var(--text);background:var(--bg);line-height:1.6}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.nav{display:flex;align-items:center;justify-content:space-between;padding:18px 40px;border-bottom:1px solid var(--border);position:sticky;top:0;background:rgba(255,255,255,.95);z-index:10}.brand{font-size:20px;font-weight:700;color:var(--primary)}.nav-links{display:flex;gap:28px}.nav-links a{color:var(--text);font-size:15px}.nav-links a:hover{color:var(--primary)}.container{max-width:1200px;margin:0 auto;padding:0 24px}.hero{padding:80px 0 60px;background:linear-gradient(135deg,#0B3D91 0%,#1d5fd1 100%);color:#fff;text-align:center}.hero h1{font-size:44px;margin:0 0 16px}.hero p{font-size:18px;opacity:.92;margin:0}.section{padding:60px 0}.section h2{text-align:center;font-size:32px;margin:0 0 40px;color:var(--primary)}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.feature{border:1px solid var(--border);border-radius:12px;padding:28px;transition:all .2s}.feature:hover{box-shadow:0 8px 24px #0b3d9114;transform:translateY(-2px)}.feature h3{margin:0 0 12px;font-size:20px;color:var(--primary)}.feature p{margin:0;color:var(--sub)}.footer{background:#0B3D91;color:#ffffffd9;padding:40px 0;text-align:center;font-size:14px;margin-top:80px}.contact-row{display:flex;gap:40px;align-items:flex-start}.contact-info{flex:1}.contact-info p{margin:8px 0;color:var(--sub)}.contact-info .label{color:var(--text);font-weight:600;margin-right:8px}