:root{color-scheme:light;--ink:#17211b;--muted:#536359;--green:#186b4a;--line:#dde5df;--canvas:#f4f7f4;--soft:#eaf7f0;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:#fff;line-height:1.85}
*{box-sizing:border-box}body{margin:0}::selection{background:#c9efd9;color:#102219}a{color:var(--green);text-underline-offset:4px;overflow-wrap:anywhere}a:hover{color:#10492f}a:focus-visible,summary:focus-visible{outline:3px solid var(--green);outline-offset:5px}header{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:22px max(28px,calc((100vw - 1280px)/2));border-bottom:1px solid var(--line)}.brand{display:flex;gap:10px;align-items:center;font-weight:750;font-size:18px;text-decoration:none;color:var(--ink);white-space:nowrap}.brand span{font-size:14px;color:var(--muted)}nav{display:flex;gap:24px;flex-wrap:wrap;font-size:14px}nav a{text-decoration:none;padding:6px 0}nav a[aria-current]{font-weight:750;border-bottom:2px solid var(--green)}.layout{max-width:1280px;margin:auto;display:grid;grid-template-columns:250px minmax(0,1fr);gap:64px;padding:48px 28px 0}aside{align-self:start;position:sticky;top:28px;font-size:13px;color:var(--muted);max-height:calc(100vh - 56px);overflow:auto;scrollbar-color:#b9cabe transparent}.home{font-size:16px;font-weight:750;text-decoration:none}summary{cursor:pointer;font-weight:650;margin:22px 0 10px}.toc ul{list-style:none;margin:0;padding:0}.toc li{margin:9px 0}.toc li li{padding-left:12px;font-size:12px}.toc a{color:var(--muted);text-decoration:none}.toc a:hover{text-decoration:underline;color:var(--green)}.contact{border-top:1px solid var(--line);padding-top:20px;margin-top:28px}main{min-width:0;max-width:880px}article{font-size:16px;overflow-wrap:anywhere}h1{font-size:clamp(30px,4vw,46px);line-height:1.3;letter-spacing:-.025em;margin:0 0 28px;font-weight:800;text-wrap:balance}h2{font-size:26px;line-height:1.5;margin:52px 0 18px;scroll-margin-top:24px}h3{font-size:19px;margin:32px 0 12px;scroll-margin-top:24px}p{margin:16px 0}li{margin:7px 0}blockquote{margin:24px 0;background:var(--canvas);padding:16px 24px;border-radius:8px;color:#354c3e}blockquote p{margin:4px 0}article img{max-width:100%;height:auto;display:block;margin:24px auto;border:1px solid var(--line);border-radius:6px}.image-link{display:block}.intro{font-size:18px;color:var(--muted);margin-bottom:32px}code{background:var(--canvas);padding:2px 6px;border-radius:4px;font-family:Consolas,monospace;font-size:.9em}pre{white-space:pre-wrap;background:var(--canvas);padding:18px;border-radius:8px}pre code{padding:0}table{border-collapse:collapse;width:100%;font-size:14px;margin:24px 0}th,td{border:1px solid var(--line);padding:12px;text-align:left}th{background:var(--canvas)}hr{border:0;border-top:1px solid var(--line);margin:40px 0}.directory{margin:36px 0}.directory>a{display:block;text-decoration:none;color:var(--ink);padding:24px 0;border-bottom:1px solid var(--line)}.directory>a:hover{background:var(--canvas)}.directory h2{margin:0;font-size:25px}.directory h2 span{float:right;color:var(--green)}.directory p{margin:8px 0;color:var(--muted)}.related{background:var(--soft);padding:20px}footer{border-top:1px solid var(--line);margin-top:64px;padding:28px 0 40px;font-size:13px;color:var(--muted)}footer nav{margin-bottom:18px}.skip{position:absolute;top:-100px;left:12px;background:white;padding:10px;z-index:2}.skip:focus{top:10px}
@media(max-width:850px){header{padding:18px 22px;align-items:flex-start;flex-direction:column;gap:12px}header nav{gap:20px}.layout{grid-template-columns:1fr;gap:30px;padding:28px 22px 0}aside{position:static;max-height:none}.contact{display:none}details{margin-top:8px;padding:12px 16px;background:var(--canvas);max-height:220px;overflow:auto}summary{margin:0 0 8px}.home{display:none}article{font-size:15px}h2{font-size:23px}h1{font-size:32px}blockquote{padding:14px 18px}ul,ol{padding-left:24px}table{font-size:12px}th,td{padding:8px}}
@media print{header,aside,footer,.skip{display:none}.layout{display:block;padding:0}main{max-width:none}a{color:inherit}article img{max-height:600px;object-fit:contain}h2,h3{break-after:avoid}}