:root{--bg:#f7f8fa;--panel:#fff;--text:#1f2329;--muted:#646a73;--line:#e4e7ec;--accent:#2563eb;--accent-soft:#eaf1ff;
--code-bg:#0f172a;--code-text:#e2e8f0;--warn-bg:#fff7e6;--warn-line:#f5c16c}
@media (prefers-color-scheme:dark){:root{--bg:#0e1116;--panel:#161b22;--text:#e6e8eb;--muted:#9aa4b2;--line:#262c36;
--accent:#6ea8ff;--accent-soft:#16233a;--code-bg:#0a0d12;--code-text:#d6deeb;--warn-bg:#2a2112;--warn-line:#7a5a1e}}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:72px}
body{margin:0;background:var(--bg);color:var(--text);font:15px/1.8 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
header{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--panel) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar{max-width:1120px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;gap:16px}
.brand{font-weight:700;color:var(--text);font-size:17px;display:inline-flex;align-items:center;gap:8px}.brand:hover{text-decoration:none}
.brand img{border-radius:7px;display:block}.brand small{font-weight:500;color:var(--muted);font-size:14px}
.bar nav{margin-left:auto;display:flex;gap:18px;font-size:14px}.bar nav a{color:var(--muted)}.bar nav a:hover{color:var(--text)}
.wrap{max-width:1120px;margin:0 auto;padding:24px 16px 80px;display:grid;grid-template-columns:200px minmax(0,1fr);gap:48px}
aside{position:sticky;top:76px;align-self:start;font-size:14px}
aside .grp{font-size:12px;color:var(--muted);letter-spacing:.04em;margin:18px 0 6px}aside .grp:first-child{margin-top:4px}
aside ul{list-style:none;margin:0;padding:0}
aside li a{display:block;padding:6px 12px;border-radius:8px;color:var(--muted)}
aside li a:hover{background:var(--accent-soft);color:var(--text);text-decoration:none}
aside li a[aria-current]{background:var(--accent-soft);color:var(--accent);font-weight:600}
main{min-width:0;max-width:780px}
h1{font-size:28px;line-height:1.3;margin:4px 0 6px}.meta{color:var(--muted);font-size:13px;margin:0 0 22px}
.lead{color:var(--muted);margin:0 0 24px}
h2{font-size:19px;margin:36px 0 10px}h3{font-size:16px;margin:22px 0 6px}
p,ul,ol{margin:8px 0}li{margin:3px 0}
code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.9em;background:var(--accent-soft);padding:1px 6px;border-radius:5px;word-break:break-word}
pre{background:var(--code-bg);color:var(--code-text);border-radius:10px;padding:14px 16px;overflow-x:auto;font:13px/1.6 ui-monospace,SFMono-Regular,Consolas,monospace}
pre code{background:none;padding:0;color:inherit}
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 20px}
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:14px 0}
.tile{display:block;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 18px;color:var(--text)}
.tile:hover{border-color:var(--accent);text-decoration:none}.tile b{display:block;font-size:15px;margin-bottom:2px}
.tile span{color:var(--muted);font-size:13.5px;line-height:1.6}
.note{background:var(--warn-bg);border:1px solid var(--warn-line);border-radius:10px;padding:10px 14px;font-size:14px;margin:12px 0}
details{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:10px 16px;margin:8px 0}
summary{cursor:pointer;font-weight:600}details[open] summary{margin-bottom:6px}
table{width:100%;border-collapse:collapse;font-size:14px;background:var(--panel);border:1px solid var(--line);border-radius:10px;overflow:hidden}
th,td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-weight:600;color:var(--muted);font-size:13px}tr:last-child td{border-bottom:0}.tw{overflow-x:auto}
.pager{display:flex;justify-content:space-between;gap:12px;margin-top:48px;padding-top:18px;border-top:1px solid var(--line);font-size:14px}
footer{color:var(--muted);font-size:13px;margin-top:28px}
@media (max-width:860px){.wrap{grid-template-columns:1fr;gap:0;padding-top:12px}
aside{position:static;margin-bottom:18px}aside .grp{display:none}
aside ul{display:flex;flex-wrap:wrap;gap:6px}aside li a{border:1px solid var(--line);padding:4px 12px;border-radius:999px;font-size:13px}
.grid{grid-template-columns:1fr}.bar{gap:10px}.bar nav{gap:12px;font-size:13px}.bar nav a{white-space:nowrap}.brand small{display:none}h1{font-size:24px}}
/* embedded (e.g. /user-agreement iframe): content only */
html.embed header,html.embed aside,html.embed .pager,html.embed footer{display:none}
html.embed .wrap{display:block;padding-top:8px}