*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;overflow-wrap:anywhere}
img{max-width:100%;height:auto}
a{color:inherit}
.nt{position:absolute;opacity:0;pointer-events:none}
.burger{display:none;cursor:pointer;width:44px;height:44px;align-items:center;justify-content:center}
.burger span,.burger span::before,.burger span::after{display:block;width:22px;height:2px;background:currentColor;content:"";position:relative}
.burger span::before{position:absolute;top:-7px}.burger span::after{position:absolute;top:7px}
.tbl{overflow-x:auto}table{border-collapse:collapse;width:100%}
details>summary{cursor:pointer;list-style:none}details>summary::-webkit-details-marker{display:none}
@media (max-width:820px){.burger{display:flex}.nav{display:none}.nt:checked~.nav{display:flex}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
body{background:var(--bg);color:var(--ink);font:16px/1.85 var(--ft)}
.wrap{max-width:var(--ww,1080px);margin:0 auto;padding:0 20px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand img{width:38px;height:38px;flex:none}
.brand b{display:block;font-size:18px;letter-spacing:2px;line-height:1.2}
.brand i{display:block;font-style:normal;font-size:11px;color:var(--mut);line-height:1.2}
.nav a{text-decoration:none;color:var(--mut)}
.nav a:hover,.nav a[aria-current]{color:var(--ink)}
.btn{display:inline-block;padding:12px 26px;border-radius:999px;background:var(--acc);color:var(--onacc,#fff);font-weight:700;text-decoration:none;transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px)}
.article{max-width:var(--aw,780px);margin:0 auto;padding:36px 20px 72px}
.crumbs{font-size:13px;color:var(--mut);display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}.crumbs a{text-decoration:none}
.article h1{font-size:clamp(26px,4vw,36px);line-height:1.35;margin:0 0 10px}
.meta{color:var(--mut);font-size:13px;margin:0 0 24px}
.prose h2{font-size:23px;line-height:1.4;margin:2em 0 .6em}
.prose h3{font-size:18px;margin:1.6em 0 .4em}
.prose p{margin:.9em 0}
.prose ul,.prose ol{padding-left:1.3em}.prose li{margin:.35em 0}
.prose a{color:var(--acc2);text-underline-offset:3px}
.lede{font-size:18px}
.steps{counter-reset:s;list-style:none;padding:0!important}
.steps li{counter-increment:s;position:relative;padding:16px 16px 16px 66px;margin:12px 0;background:var(--card);border:1px solid var(--line);border-radius:var(--r)}
.steps li::before{content:counter(s);position:absolute;left:16px;top:16px;width:34px;height:34px;border-radius:50%;background:var(--acc);color:var(--onacc,#fff);display:grid;place-items:center;font-weight:700}
.steps b{display:block}.steps span{color:var(--mut)}
.tbl{border:1px solid var(--line);border-radius:var(--r);margin:1.2em 0}
th,td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--line);font-size:15px;vertical-align:top}
tbody tr:last-child>*{border-bottom:0}
thead th{background:var(--card);white-space:nowrap}
.callout{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--acc);border-radius:var(--r);padding:14px 18px;margin:1.4em 0}
.cta-row{margin:24px 0}.cta-row small{display:block;margin-top:8px;color:var(--mut)}
.faq details{border:1px solid var(--line);border-radius:var(--r);margin:10px 0;background:var(--card)}
.faq summary{padding:14px 18px;font-weight:600}
.faq summary::after{content:"+";float:right;color:var(--acc2)}
.faq details[open] summary::after{content:"−"}
.faq details p{margin:0;padding:0 18px 16px;color:var(--mut)}
.kv div{display:grid;grid-template-columns:150px 1fr;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.kv dt{font-weight:700;color:var(--acc2)}.kv dd{margin:0}
.endcta{margin-top:44px;padding:24px;border-radius:var(--r);background:var(--card);border:1px solid var(--line);text-align:center}
.endcta p{margin:.3em 0}
.related{margin-top:40px}.related h2{font-size:20px}
.related ul{list-style:none;padding:0}.related li{padding:12px 0;border-bottom:1px solid var(--line)}
.related a{font-weight:700;display:block;text-decoration:none}.related a:hover{color:var(--acc2)}
.related span{color:var(--mut);font-size:14px}
.site-footer{border-top:1px solid var(--line);padding:34px 0;color:var(--mut);font-size:14px}
.site-footer p{margin:.5em 0}.site-footer a{color:var(--ink)}
.fnav{display:flex;gap:18px;flex-wrap:wrap;margin:10px 0}
.toc{display:none}
@media (max-width:820px){.kv div{grid-template-columns:1fr;gap:2px}.steps li{padding-left:58px}}
:root{--bg:#0d1117;--card:#161b22;--ink:#e6edf3;--mut:#8b98a5;--line:#2b3340;--acc:#3fb950;--acc2:#7ee787;--onacc:#04170a;--r:8px;--aw:820px;--ft:"JetBrains Mono","Cascadia Code",Consolas,"Microsoft YaHei",monospace}
body{font-size:15px;line-height:1.9}
.layout{display:grid;grid-template-columns:250px 1fr;min-height:100vh}
.side{position:sticky;top:0;height:100vh;overflow:auto;border-right:1px solid var(--line);background:#0a0e14;padding:22px 16px;display:flex;flex-direction:column;gap:18px}
.side .nav{display:flex;flex-direction:column;font-size:14px}
.side .nav a{padding:7px 10px;border-left:2px solid transparent;color:var(--mut)}
.side .nav a::before{content:"$ ";color:#3a4452}
.side .nav a:hover{color:var(--acc2)}.side .nav a[aria-current]{color:var(--acc2);border-left-color:var(--acc);background:#10171f}
.side-cta{margin-top:auto}.side-cta .btn{width:100%;text-align:center;border-radius:6px}
.btn{border-radius:6px}
.main{display:grid;grid-template-columns:minmax(0,1fr) 200px;gap:0 24px;align-items:start;max-width:1120px}
.main>.home-h,.main>.home-b{grid-column:1/-1}
.main>.article{grid-column:1;grid-row:1}
.toc{display:flex;flex-direction:column;gap:2px;position:sticky;top:20px;grid-column:2;grid-row:1;font-size:13px;margin:34px 20px 0 0;padding-left:14px;border-left:1px solid var(--line)}
.toc b{color:var(--acc2);margin-bottom:6px}.toc a{color:var(--mut);text-decoration:none}.toc a:hover{color:var(--acc2)}
.article{flex:1;min-width:0;margin:0;padding:34px 24px 64px 36px}
.article h1::before{content:"> ";color:var(--acc)}
.prose h2::before{content:"## ";color:var(--acc);font-weight:400}
.prose code,.kbd{background:#1f2630;border:1px solid var(--line);border-radius:4px;padding:1px 6px;font-size:.92em;color:var(--acc2)}
.steps li{background:#10171f}.steps li::before{border-radius:6px}
.callout{background:#10171f;border-left-color:var(--acc)}
.endcta{background:#10171f;border-style:dashed}
.term{background:#0a0e14;border:1px solid var(--line);border-radius:10px;overflow:hidden;margin:24px 0}
.term>div{display:flex;gap:7px;padding:10px 14px;background:#161b22;border-bottom:1px solid var(--line)}
.term>div i{width:11px;height:11px;border-radius:50%;background:#ff5f56}.term>div i:nth-child(2){background:#ffbd2e}.term>div i:nth-child(3){background:#27c93f}
.term pre{margin:0;padding:18px 20px;white-space:pre-wrap;color:var(--ink);font:inherit}
.term .c{color:#6e7a88}.term .g{color:var(--acc2)}
.term .cur{display:inline-block;width:9px;height:1.1em;background:var(--acc);vertical-align:-2px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.home-h{padding:44px 36px 8px}.home-h h1{font-size:clamp(28px,4vw,40px);margin:0 0 8px}.home-h p{color:var(--mut);margin:0;max-width:40em}
.home-b{padding:0 36px 40px}
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;list-style:none;padding:0;margin:0}
.cards a{display:block;border:1px solid var(--line);background:var(--card);border-radius:var(--r);padding:14px 16px;text-decoration:none}
.cards a:hover{border-color:var(--acc)}.cards b{display:block;color:var(--acc2)}.cards span{font-size:13px;color:var(--mut)}
.site-footer .wrap{max-width:none;padding:0 36px}
@media (max-width:1100px){.toc{display:none}.main{display:block}}
@media (max-width:820px){.layout{display:block}.side{position:static;height:auto;flex-direction:row;flex-wrap:wrap;align-items:center;padding:10px 14px}.side .brand{flex:1}.burger{color:#e6edf3;display:flex}.side .nav{display:none;width:100%}.nt:checked~.nav{display:flex}.side-cta{display:none}.article,.home-h,.home-b{padding-left:16px;padding-right:16px}.cards{grid-template-columns:1fr}.site-footer .wrap{padding:0 16px}}