:root{--ink:#111d31;--muted:#5a6a80;--line:#e2e8f1;--brand:#0b1a39;--brand-2:#1f5fa8;--brand-soft:#eef3fa;--bg:#fbfcfe}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.75 -apple-system,"Segoe UI","Microsoft YaHei",sans-serif}
a{color:var(--brand-2);text-decoration:none}
a:hover{text-decoration:underline}
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:9}
.header-inner{max-width:1040px;margin:0 auto;padding:14px 20px;display:flex;flex-wrap:wrap;align-items:center;gap:18px}
.logo{font-size:19px;font-weight:700;letter-spacing:.5px}
.logo span{color:var(--brand-2)}
.nav{margin-left:auto;display:flex;flex-wrap:wrap;gap:14px}
.nav a{color:var(--muted);font-size:15px}
.nav a.active{color:var(--brand-2);font-weight:600}
.wrap{max-width:1040px;margin:0 auto;padding:34px 20px 60px}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:18px}
article h1{font-size:30px;line-height:1.35;margin:0 0 22px}
article h2{font-size:21px;margin:38px 0 14px;padding-left:12px;border-left:4px solid var(--brand-2)}
article h3{font-size:17px;margin:26px 0 10px}
article p{margin:0 0 16px}
article strong{color:var(--brand)}
table{border-collapse:collapse;width:100%;margin:18px 0;font-size:15px;background:#fff}
th,td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
th{background:var(--brand-soft);font-weight:600}
ul,ol{margin:0 0 16px;padding-left:22px}
li{margin:6px 0}
hr{border:none;border-top:1px solid var(--line);margin:30px 0}
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin:22px 0}
.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px}
.card h3{margin:0 0 8px;font-size:16px}
.card p{margin:0;color:var(--muted);font-size:14px}
.site-footer{border-top:1px solid var(--line);background:#fff;margin-top:40px}
.footer-inner{max-width:1040px;margin:0 auto;padding:24px 20px;font-size:13px;color:var(--muted)}
.footer-inner p{margin:4px 0}
@media(max-width:640px){.nav{gap:10px;font-size:14px}article h1{font-size:24px}}