:root{--bg:#f6f8fa;--card:#fff;--ink:#1f2937;--muted:#6b7280;--line:#e5e7eb;
--accent:#1d4ed8;--accent-weak:#eff4ff;--warn:#b45309;--warn-weak:#fffbeb;
--promo:#b45309;--promo-weak:#fff7ed;--repost:#0f766e;--repost-weak:#ecfdf5}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
.wrap{max-width:900px;margin:0 auto;padding:0 18px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.site-head{background:#fff;border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:baseline;gap:12px;padding:16px 18px;flex-wrap:wrap}
.brand{font-size:19px;font-weight:700;color:var(--ink)}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.04em}
.crumb{background:#fff;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}
.crumb .wrap{padding:10px 18px}
.crumb a{color:var(--muted)}
.crumb .sep{margin:0 6px;color:#c3c9d1}
main{padding:26px 0 10px}
h1{font-size:26px;line-height:1.35;margin:0 0 6px}
.badge{display:inline-block;font-size:12px;font-weight:600;border-radius:999px;padding:2px 10px;margin-bottom:12px}
.badge.promo{color:var(--promo);background:var(--promo-weak);border:1px solid #fed7aa}
.badge.repost{color:var(--repost);background:var(--repost-weak);border:1px solid #a7e8dc}
.lead{color:var(--muted);margin:0 0 18px}
.answer{margin:0 0 18px;padding:12px 16px;background:var(--accent-weak);border-left:3px solid var(--accent);border-radius:0 8px 8px 0;font-size:15px;line-height:1.8;color:#1f2937}
section.block{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:18px 20px;margin:0 0 16px}
section.block h2{font-size:15px;margin:0 0 12px;color:#111827;letter-spacing:.02em}
section.block h2 .en{color:var(--muted);font-weight:400;font-size:12px;margin-left:6px}
section.block p{margin:0 0 10px}
section.block p:last-child{margin-bottom:0}
.kv{margin:0;display:grid;grid-template-columns:180px 1fr;gap:9px 16px}
.kv div{display:contents}
.kv dt{color:var(--muted);font-size:13px}
.kv dd{margin:0;word-break:break-all}
code,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px}
ul.plain{margin:0;padding-left:18px}
ul.plain li{margin-bottom:6px}
ul.rel{list-style:none;margin:0;padding:0;display:grid;gap:8px}
ul.rel li a{display:block;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:#fbfcfd}
ul.rel li a:hover{border-color:#bfd3ff;text-decoration:none}
.notice{background:var(--warn-weak);border:1px solid #fde68a;color:var(--warn);border-radius:8px;padding:10px 14px;font-size:13px;margin:0 0 16px}
.grid-links{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px}
.card-link{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px 16px;display:block}
.card-link:hover{border-color:#bfd3ff;text-decoration:none}
.card-link h3{margin:0 0 4px;font-size:15px;color:var(--ink)}
.card-link p{margin:0;font-size:13px;color:var(--muted)}
table.dist{width:100%;border-collapse:collapse;font-size:14px}
table.dist th,table.dist td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
table.dist th{color:var(--muted);font-weight:600;font-size:13px}
.site-foot{border-top:1px solid var(--line);background:#fff;margin-top:28px}
.site-foot .wrap{padding:18px;font-size:12.5px;color:var(--muted)}
.site-foot p{margin:0 0 6px}
.muted{color:var(--muted)}
.faq dt{font-weight:600;margin-top:10px}
.faq dd{margin:2px 0 0;color:#374151}
@media(max-width:560px){.kv{grid-template-columns:1fr}.kv dt{margin-top:6px}h1{font-size:22px}}