*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:#1d2433;line-height:1.75;background:#fff}
a{color:#1f5fbf;text-decoration:none}
.wrap{max-width:1040px;margin:0 auto;padding:0 24px}
.top{position:sticky;top:0;background:rgba(255,255,255,.95);border-bottom:1px solid #e6e9ef;z-index:10}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-size:22px;font-weight:700;color:#12305f}
.brand span{font-size:12px;font-weight:500;letter-spacing:2px;color:#7a869a;margin-left:8px}
.nav nav a{margin-left:28px;color:#3a4558;font-size:15px}
.hero{background:linear-gradient(135deg,#12305f,#1f5fbf);color:#fff;padding:110px 0 100px;text-align:center}
.hero h1{font-size:40px;letter-spacing:2px}
.hero .en{color:#cfe0ff;margin-top:6px}
.hero .lead{max-width:640px;margin:22px auto 0;font-size:18px;color:#e8f0ff}
.block{padding:72px 0}
.block.alt{background:#f5f7fb}
h2{font-size:28px;color:#12305f;margin-bottom:24px}
h2 small{font-size:15px;color:#7a869a;font-weight:400;margin-left:10px}
.block p{margin-bottom:12px}
.en{color:#5b667a;font-size:15px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.card{background:#fff;border:1px solid #e3e7ee;border-radius:10px;padding:26px}
.card h3{color:#1f5fbf;margin-bottom:8px}
.contact{list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.contact li{background:#f5f7fb;border-radius:10px;padding:22px}
.contact b{display:block;color:#12305f;margin-bottom:6px}
.doc h3{margin:22px 0 8px;color:#12305f}
.doc hr{border:0;border-top:1px solid #e3e7ee;margin:28px 0}
.foot{background:#0e1f3d;color:#aab6cc;text-align:center;padding:28px 0;font-size:14px}
.foot a{color:#cfe0ff}
@media(max-width:640px){.hero h1{font-size:28px}.nav nav a{margin-left:14px;font-size:14px}.hero{padding:70px 0}}