*{margin:0;padding:0;box-sizing:border-box}
body{font-family:Microsoft YaHei,sans-serif;background:#f4f4f4;color:#333;line-height:1.7}
.container{max-width:1100px;margin:0 auto;padding:0 15px}
.header{background:#0d47a1;color:#fff;padding:18px 0;text-align:center}
.header h1{font-size:22px}
.nav{display:flex;flex-wrap:wrap;justify:center;gap:12px;margin-top:10px}
.nav a{color:#fff;text-decoration:none;font-size:14px}
.box{background:#fff;border-radius:8px;padding:20px;margin:15px 0}
.bread{font-size:13px;color:#666;margin:10px 0}
.footer{text-align:center;padding:20px;color:#666;background:#fff;margin-top:20px}
@media(max-width:768px){
.header h1{font-size:18px}
.nav{gap:8px}
.box{padding:15px}
}