:root{--ink:#1c2330;--muted:#5b6575;--line:#e3e7ee;--accent:#0f5fa8;--accent-soft:#eef4fb;--bg:#ffffff;--panel:#f7f9fc;}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16.5px;line-height:1.75;}
.wrap{max-width:800px;margin:0 auto;padding:48px 22px 80px;}
h1{font-size:1.95em;line-height:1.28;margin:.2em 0 .5em;letter-spacing:-.01em;}
h2{font-size:1.42em;line-height:1.35;margin:2.1em 0 .6em;padding-top:.55em;border-top:1px solid var(--line);}
h3{font-size:1.13em;margin:1.6em 0 .45em;}
p{margin:.85em 0;}
a{color:var(--accent);text-decoration:none;border-bottom:1px solid #c8d9ec;}
a:hover{border-bottom-color:var(--accent);}
strong{font-weight:650;}
ul,ol{padding-left:1.45em;margin:.8em 0;}
li{margin:.35em 0;}
blockquote{margin:1.3em 0;padding:.85em 1.2em;background:var(--accent-soft);border-left:3px solid var(--accent);border-radius:0 8px 8px 0;color:#2a3b52;}
blockquote p{margin:.3em 0;}
table{width:100%;border-collapse:collapse;margin:1.35em 0;font-size:.92em;display:block;overflow-x:auto;}
th{background:var(--panel);text-align:left;font-weight:650;white-space:nowrap;}
th,td{border:1px solid var(--line);padding:.6em .8em;vertical-align:top;}
tbody tr:nth-child(even){background:#fbfcfe;}
code{background:var(--panel);border:1px solid var(--line);border-radius:5px;padding:.1em .4em;font-size:.88em;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;}
pre{background:#0f1722;color:#dbe4f0;border-radius:10px;padding:1.1em 1.3em;overflow-x:auto;}
pre code{background:none;border:none;color:inherit;padding:0;}
hr{border:none;border-top:1px solid var(--line);margin:2.4em 0;}
.sitebar{max-width:800px;margin:0 auto;padding:14px 22px;border-bottom:1px solid var(--line);font-size:.85em;color:var(--muted);display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;}
.sitebar a{border:none;font-weight:600;}
.foot{max-width:800px;margin:0 auto;padding:20px 22px 60px;border-top:1px solid var(--line);font-size:.82em;color:var(--muted);}
@media print{.sitebar,.foot{display:none}.wrap{padding:0}}