:root{color-scheme:light;--bg:#f8faf7;--panel:#fff;--text:#233128;--muted:#647268;--line:#e0e7df;--green:#24633f;--accent:#edf5ed;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.75}*{box-sizing:border-box}body{margin:0;color:var(--text);background:var(--bg)}a{color:var(--green);text-underline-offset:3px}button,input,select{font:inherit;color:inherit}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,main:focus-visible{outline:3px solid var(--green);outline-offset:3px}button,select{cursor:pointer}.header{height:80px;padding:0 max(28px,calc((100vw - 1420px)/2));display:flex;align-items:center;gap:30px;border-bottom:1px solid var(--line);background:var(--panel)}.brand{font-size:23px;font-weight:750;text-decoration:none;white-space:nowrap}.brand span{font-size:13px;font-weight:450;color:var(--muted);margin-left:10px}.header nav{display:flex;gap:24px;margin-left:auto}.header nav a{text-decoration:none;font-size:14px}.language{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}.language select{background:var(--bg);border:1px solid var(--line);border-radius:7px;padding:5px 7px}.layout{display:grid;grid-template-columns:238px minmax(0,1fr) 190px;max-width:1420px;margin:auto;gap:42px;padding:34px 28px 64px;min-height:calc(100vh - 170px)}.sidebar{position:sticky;top:24px;align-self:start;font-size:13px}.sidebar>label{font-weight:650;display:block;margin-bottom:8px}input[type=search]{width:100%;min-width:0;border:1px solid var(--line);border-radius:8px;background:var(--panel);padding:9px 10px;font-size:12px}#article-nav{display:flex;flex-direction:column;gap:4px;margin-top:15px}#article-nav>a{display:block;border-radius:7px;padding:8px 12px;color:var(--muted);text-decoration:none;line-height:1.5}#article-nav>a:hover{background:var(--accent);color:var(--green)}#article-nav>a[aria-current=page]{background:var(--accent);color:var(--green);font-weight:650}.sidebar-note{padding:20px 12px 0;border-top:1px solid var(--line);margin-top:24px;color:var(--muted);font-size:11px}.subtle{font-size:11px;color:var(--muted);margin:6px 2px;min-height:1px}.empty{color:var(--muted);padding:10px}.eyebrow{font-size:10px;letter-spacing:.14em;color:var(--green);font-weight:700;margin:0 0 9px}main{min-width:0;max-width:790px}h1{font-size:31px;line-height:1.3;letter-spacing:-.02em;margin:0 0 16px}p{margin:12px 0}.lead{font-size:16px;color:var(--muted);margin-bottom:32px}article section{scroll-margin-top:24px;margin-top:32px}h2{font-size:20px;line-height:1.45;border-top:1px solid var(--line);padding-top:22px;margin-bottom:14px}ol{padding-left:24px}li{padding-left:6px;margin:14px 0}pre{max-width:100%;overflow-x:auto;background:var(--accent);border:1px solid var(--line);border-radius:8px;padding:14px;font-size:12px;line-height:1.7}code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.on-page{position:sticky;top:24px;align-self:start;font-size:11px;border-left:1px solid var(--line);padding-left:20px}.on-page>p{font-weight:650;margin:0 0 12px}.on-page nav{display:flex;flex-direction:column;gap:11px}.on-page a{color:var(--muted);text-decoration:none;line-height:1.5}.on-page a:hover{color:var(--green)}.source{display:inline-block;margin-top:6px}.skip{position:fixed;top:8px;left:12px;padding:8px 16px;background:var(--panel);z-index:10;transform:translateY(-150%)}.skip:focus{transform:none}footer{display:flex;justify-content:space-between;gap:16px;max-width:1364px;margin:auto;padding:20px 0 28px;border-top:1px solid var(--line);font-size:11px;color:var(--muted)}.menu-toggle{display:none}@media(max-width:1150px){.layout{grid-template-columns:220px minmax(0,1fr);gap:30px}.on-page{display:none}footer{margin-inline:28px}}@media(max-width:740px){.header{height:auto;min-height:80px;flex-wrap:wrap;padding:16px 20px;gap:12px 20px}.brand{font-size:21px}.brand span{font-size:11px}.header nav{gap:16px;font-size:12px}.language{margin-left:auto}.language>span{display:none}.layout{display:block;padding:22px 20px 40px}.sidebar{position:static;margin-bottom:26px}.sidebar>label{font-size:12px}input[type=search]{font-size:14px}.menu-toggle{display:block;width:100%;padding:8px 10px;border:1px solid var(--line);border-radius:7px;text-align:left;background:var(--panel);font-size:13px}#article-nav{display:none}#article-nav.is-open{display:flex}.sidebar-note{display:none}.subtle{margin:7px 0}h1{font-size:27px}.lead{font-size:14px}h2{font-size:19px}article{font-size:14px}footer{display:block;margin-inline:20px}footer span{display:block;margin-bottom:6px}.header nav{order:2;margin-left:0}.language{order:1}.brand{flex:1}.header nav a{font-size:12px}}:root[data-theme=dark]{color-scheme:dark;--bg:#111a14;--panel:#19241c;--text:#e0ebe1;--muted:#a6b8aa;--line:#2e4033;--green:#a3d4ac;--accent:#20372a}@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}

.theme-toggle{border:1px solid var(--line);background:var(--panel);border-radius:7px;padding:4px 10px;font-size:20px;line-height:1.4}.header .language{margin-left:0}@media(max-width:740px){.theme-toggle{order:1}.header{column-gap:12px}.language{margin-left:auto}}