:root{--ink:#12151c;--ink-2:#414755;--ink-3:#6b7280;--bg:#fff;--bg-2:#f4f5f9;--line:#e6e8ef;--brand:#2f8f7d;--brand-soft:#e9f5f2}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased}
a{color:var(--brand)}
.topbar{border-bottom:1px solid var(--line);font-size:.92rem}
.topbar div{max-width:760px;margin:auto;padding:0 24px;height:56px;display:flex;align-items:center;justify-content:space-between}
.topbar a.brand{display:flex;align-items:center;gap:.55em;color:var(--ink);font-weight:600;text-decoration:none}
.topbar img{width:26px;height:26px;border-radius:7px}
main{max-width:760px;margin:auto;padding:3rem 24px 5rem}
h1{font-size:clamp(1.8rem,1.4rem + 1.6vw,2.4rem);letter-spacing:-.02em;line-height:1.2;margin:0 0 .3em}
.meta{color:var(--ink-3);font-size:.9rem;margin:0 0 2.5em}
h2{font-size:1.25rem;margin:2.2em 0 .5em;padding-top:.2em}
h3{font-size:1.02rem;margin:1.5em 0 .3em}
p,li{color:var(--ink-2)}
ol,ul{padding-left:1.4em}
li{margin:.3em 0}
table{width:100%;border-collapse:collapse;font-size:.93rem;margin:1em 0}
th,td{text-align:left;padding:.6em .8em;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--ink-3);font-weight:600;font-size:.85rem;background:var(--bg-2)}
code{font-family:ui-monospace,Menlo,monospace;font-size:.86em;background:var(--bg-2);padding:.1em .4em;border-radius:4px;word-break:break-all}
.note{background:var(--brand-soft);border-radius:10px;padding:1em 1.2em;color:#0f3d35}
footer{border-top:1px solid var(--line);padding:2.5em 24px;text-align:center;font-size:.88rem;color:var(--ink-3)}
footer a{color:var(--ink-3)}