*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"Microsoft YaHei","PingFang SC",sans-serif;background:#0e1a2b;color:#e8edf4;line-height:1.75}
a{color:#8cc0ff;text-decoration:none}
a:hover{color:#b7d7ff}
.wrap{max-width:980px;margin:0 auto;padding:0 22px}
nav{background:#0b1422;border-bottom:1px solid #1d3350;position:sticky;top:0;z-index:10}
nav .wrap{display:flex;align-items:center;height:56px;gap:26px}
nav .logo{font-weight:700;font-size:17px;color:#fff}
nav .logo span{color:#64a0ff}
nav a{color:#9fb4d0;font-size:14.5px}
nav a:hover,nav a.active{color:#8cc0ff}
header.hero{padding:80px 0 60px;background:linear-gradient(160deg,#0e1a2b 0%,#1a2f4d 60%,#20486e 100%);text-align:center}
header.hero h1{font-size:40px;letter-spacing:2px}
header.hero h1 span{color:#64a0ff}
header.hero p{margin-top:14px;color:#9fb4d0;font-size:16.5px}
.btns{margin-top:30px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-block;padding:11px 30px;border-radius:8px;font-size:15px}
.btn.pri{background:#2f6fd6;color:#fff}
.btn.pri:hover{background:#3d80ea;color:#fff}
.btn.sec{border:1px solid #3a5a8c;color:#c6d6ea}
.btn.sec:hover{border-color:#64a0ff;color:#8cc0ff}
main{padding:56px 0 40px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:22px}
.card{background:#16253c;border:1px solid #27415f;border-radius:12px;padding:24px;transition:.25s}
.card:hover{transform:translateY(-3px);border-color:#3f6ea8}
.card h3{font-size:17px;margin-bottom:8px;color:#8cc0ff}
.card p{font-size:13.5px;color:#9fb4d0}
section{margin-bottom:52px}
h2.sec{font-size:24px;margin-bottom:8px;color:#fff}
h2.sec small{font-size:13px;color:#5a7396;font-weight:400;margin-left:10px;letter-spacing:1px}
p.desc{color:#9fb4d0;margin-bottom:22px;font-size:14.5px}
article.doc{background:#13223a;border:1px solid #27415f;border-radius:12px;padding:34px 36px}
article.doc h1{font-size:26px;color:#fff;margin-bottom:6px}
article.doc h2{font-size:19px;color:#8cc0ff;margin:30px 0 10px;padding-top:14px;border-top:1px dashed #27415f}
article.doc h3{font-size:16px;color:#a9c8ef;margin:20px 0 8px}
article.doc p,article.doc li{font-size:14.5px;color:#c6d6ea}
article.doc ul,article.doc ol{padding-left:22px;margin:8px 0 14px}
article.doc code{background:#0b1422;border:1px solid #27415f;border-radius:4px;padding:2px 7px;font-size:13px;color:#9fd6a8;font-family:Consolas,Menlo,monospace}
pre{background:#0b1422;border:1px solid #27415f;border-radius:8px;padding:16px 18px;overflow-x:auto;margin:10px 0 16px}
pre code{background:none;border:none;padding:0;color:#e6edf3;font-size:13px;line-height:1.6}
.tip{background:#12322a;border:1px solid #1f5c49;border-radius:8px;padding:12px 16px;font-size:13.5px;color:#9fd6a8;margin:12px 0}
ul.list{list-style:none;padding:0}
ul.list li{padding:11px 0;border-bottom:1px dashed #22385a;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
ul.list li .t{color:#e8edf4;font-size:14.5px}
ul.list li .m{color:#5a7396;font-size:12.5px}
footer{border-top:1px solid #1d3350;padding:26px 0;text-align:center;font-size:13px;color:#5a7396}
.crumb{font-size:13px;color:#5a7396;margin-bottom:18px}