*{margin:0;padding:0;box-sizing:border-box;}
:root{--ink:#0B1B33;--navy:#0A1F45;--blue:#1E6BEB;--sub:#5F6B7A;--line:#E3EAF3;--bg:#F6F8FC;}
html{scroll-behavior:smooth;}
body{font-family:system-ui,-apple-system,"Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);line-height:1.85;background:#fff;overflow-x:hidden;}
.wrap{max-width:760px;margin:0 auto;padding:0 22px;}
.gnav{position:sticky;top:0;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);z-index:50;}
.gnav .wrap{max-width:1080px;display:flex;align-items:center;height:60px;}
.gnav img{height:32px;}
.gnav .r{margin-left:auto;display:flex;gap:12px;align-items:center;}
.gnav a{text-decoration:none;font-size:14px;}
.gnav .ghost{color:var(--sub);}
.gnav .solid{background:var(--blue);color:#fff;padding:8px 16px;border-radius:8px;font-weight:500;}
.crumb{font-size:13px;color:var(--sub);margin:34px 0 10px;}
.crumb a{color:var(--blue);text-decoration:none;}
h1{font-size:30px;line-height:1.4;color:var(--navy);letter-spacing:.5px;}
.meta{font-size:13px;color:var(--sub);margin:14px 0 6px;}
.toc{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:18px 22px;margin:26px 0;}
.toc-t{font-weight:600;font-size:14px;margin-bottom:8px;color:var(--navy);}
.toc ol{padding-left:20px;font-size:14px;}
.toc a{color:var(--ink);text-decoration:none;}
.toc a:hover{color:var(--blue);}
article p{margin:16px 0;font-size:16px;}
article .lead{font-size:17px;color:var(--navy);background:var(--bg);border-left:4px solid var(--blue);padding:14px 18px;border-radius:0 10px 10px 0;}
article h2{font-size:22px;color:var(--navy);margin:40px 0 6px;letter-spacing:.3px;}
article ul,article ol{margin:14px 0 14px 24px;font-size:15.5px;}
article li{margin:7px 0;}
blockquote{margin:20px 0;padding:14px 20px;background:#F0F6FF;border-radius:10px;color:#1B4A8A;font-size:15px;}
.tw{overflow-x:auto;margin:18px 0;}
table{border-collapse:collapse;width:100%;font-size:14.5px;}
th,td{border:1px solid var(--line);padding:9px 12px;text-align:left;}
th{background:var(--bg);color:var(--navy);white-space:nowrap;}
.cta-box{background:var(--navy);color:#fff;border-radius:16px;padding:30px 32px;margin:48px 0 20px;}
.cta-box h3{font-size:20px;margin-bottom:10px;}
.cta-box p{color:rgba(255,255,255,.85);font-size:14.5px;margin:0 0 18px;}
.cta-btns{display:flex;gap:12px;flex-wrap:wrap;}
.cta-btns .solid{background:#2B7FFF;color:#fff;text-decoration:none;padding:11px 22px;border-radius:9px;font-size:14.5px;font-weight:500;}
.cta-btns .ghost2{border:1px solid rgba(255,255,255,.45);color:#fff;text-decoration:none;padding:11px 22px;border-radius:9px;font-size:14.5px;}
.related{margin:36px 0 20px;}
.related h2{font-size:19px;color:var(--navy);margin:0 0 12px;}
.related ul{list-style:none;margin:0;}
.related a{color:var(--blue);text-decoration:none;font-size:15px;line-height:2;}
.gfoot{border-top:1px solid var(--line);margin-top:50px;padding:26px 0 40px;color:var(--sub);font-size:13px;}
.gfoot .wrap{max-width:1080px;}
.gfoot p{margin:3px 0;}
@media(max-width:640px){h1{font-size:24px;}article p{font-size:15.5px;}.cta-box{padding:24px 20px;}}