:root{--fg:#1f2933;--muted:#5f6b7a;--line:#e3e8ee;--bg:#fff;--soft:#f5f8fa;--accent:#0b6e79;--accent-soft:#e6f3f4}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;color:var(--fg);background:var(--bg);line-height:1.75;font-size:16px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:860px;margin:0 auto;padding:0 16px}
header.site{border-bottom:1px solid var(--line);background:#fff}
header.site .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px;padding-top:10px;padding-bottom:10px}
.brand{font-weight:700;font-size:18px;color:var(--fg)}
.brand small{display:block;font-weight:400;font-size:12px;color:var(--muted)}
nav.top a{margin-left:14px;font-size:15px}
nav.top a:first-child{margin-left:0}
main{padding:18px 0 40px}
h1{font-size:26px;line-height:1.35;margin:8px 0 12px}
h2{font-size:20px;margin:30px 0 10px;padding-left:10px;border-left:4px solid var(--accent)}
h3{font-size:17px;margin:20px 0 8px}
.crumbs{font-size:13px;color:var(--muted)}
.meta{font-size:13px;color:var(--muted);margin-bottom:14px}
.answer{background:var(--accent-soft);border-radius:8px;padding:14px 16px;margin:12px 0 18px}
.answer p{margin:0}
.answer strong{color:var(--accent)}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:10px 0 16px;border:1px solid var(--line);border-radius:8px}
table{border-collapse:collapse;width:100%;min-width:720px;font-size:14px}
th,td{border-bottom:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
th{background:var(--soft);white-space:nowrap}
tr:last-child td{border-bottom:0}
table.kv{min-width:0}
table.kv th{width:7.5em;white-space:normal}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;margin:10px 0}
.grid a{display:block;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--fg)}
.grid a:hover{border-color:var(--accent);text-decoration:none}
.grid a span{display:block;font-size:12px;color:var(--muted)}
ul.list{padding-left:20px}
ul.list li{margin:4px 0}
.cards{list-style:none;padding:0;margin:0}
.cards li{border-bottom:1px solid var(--line);padding:12px 0}
.cards li p{margin:4px 0 0;color:var(--muted);font-size:14px}
.faq dt{font-weight:700;margin-top:14px}
.faq dd{margin:4px 0 0 0}
.src{font-size:13px;color:var(--muted)}
.src li{word-break:break-all}
sup a{font-size:11px}
footer.site{border-top:1px solid var(--line);background:var(--soft);font-size:13px;color:var(--muted);padding:18px 0 28px}
footer.site a{color:var(--muted);margin-right:12px}
@media (max-width:560px){h1{font-size:22px}h2{font-size:18px}nav.top a{margin-left:10px;font-size:14px}}