:root{--bg:#f7f8fb;--surface:#fff;--fg:#141a2b;--muted:#5d667c;--line:#e4e7ef;--accent:#8a6512;--accent-bg:#fbf5e6;--ring:#c9a24a;--shadow:0 1px 2px rgba(16,24,40,.04),0 8px 24px rgba(16,24,40,.06)}
@media (prefers-color-scheme:dark){:root{--bg:#0b1020;--surface:#121933;--fg:#eef0f6;--muted:#a3abc4;--line:#232c4d;--accent:#e6c068;--accent-bg:#1c2240;--ring:#e6c068;--shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px rgba(0,0,0,.35)}}
*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.7 ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-underline-offset:3px}a:focus-visible,summary:focus-visible{outline:2px solid var(--ring);outline-offset:3px;border-radius:6px}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:12px;z-index:9;background:var(--surface);padding:8px 12px;border-radius:8px}
.i{flex:none}
.top{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:saturate(1.6) blur(14px);-webkit-backdrop-filter:saturate(1.6) blur(14px);border-bottom:1px solid var(--line)}
.top-in{display:flex;align-items:center;justify-content:space-between;height:60px;gap:12px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--fg);text-decoration:none;letter-spacing:-.01em}.brand .i{color:var(--accent)}
.top-nav{display:flex;gap:4px}.top-nav a{color:var(--muted);text-decoration:none;font-size:14px;font-weight:500;padding:8px 10px;border-radius:8px}.top-nav a:hover{color:var(--fg);background:var(--surface)}
@media (max-width:520px){.top-nav a:not(.all){display:none}}
.hero{padding:72px 0 40px;background:radial-gradient(1200px 400px at 50% -120px,var(--accent-bg),transparent)}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--accent);background:var(--accent-bg);border:1px solid var(--line);padding:6px 12px;border-radius:999px}
.hero h1{font-size:clamp(34px,6vw,56px);line-height:1.05;letter-spacing:-.03em;margin:18px 0 12px}
.lead{font-size:clamp(17px,2.2vw,20px);color:var(--muted);max-width:640px;margin:0}
.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 14px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 18px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--fg);text-decoration:none;font-weight:600;font-size:15px;box-shadow:var(--shadow)}
.btn.primary{background:var(--fg);color:var(--bg);border-color:var(--fg)}.btn:hover{transform:translateY(-1px)}
.meta{color:var(--muted);font-size:14px;margin:0}
.group{padding:28px 0 8px}.group-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 14px;margin-bottom:14px}
.group-head h2{font-size:22px;letter-spacing:-.02em;margin:0}.group-head p{color:var(--muted);margin:0;font-size:15px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.card{position:relative;display:flex;gap:14px;align-items:flex-start;padding:18px;background:var(--surface);border:1px solid var(--line);border-radius:16px;color:var(--fg);text-decoration:none;box-shadow:var(--shadow);transition:transform .15s ease,border-color .15s ease}
.card:hover{transform:translateY(-2px);border-color:var(--ring)}
.card strong{display:block;font-size:16px;letter-spacing:-.01em;margin-bottom:2px}.card span span{display:block;color:var(--muted);font-size:14px;line-height:1.5}
.card .go{margin-left:auto;color:var(--muted);align-self:center}.card:hover .go{color:var(--accent)}
.ic{display:inline-grid;place-items:center;width:42px;height:42px;flex:none;border-radius:12px;background:var(--accent-bg);color:var(--accent)}
.ic.big{width:54px;height:54px;border-radius:16px}
.card.small{padding:14px}
.doc{padding-top:26px;padding-bottom:40px}
.crumbs{display:flex;gap:8px;font-size:14px;color:var(--muted)}.crumbs a{color:var(--muted);text-decoration:none}.crumbs a:hover{color:var(--fg)}
.doc-head{display:flex;gap:16px;align-items:center;margin:22px 0 26px}
.doc-head h1{font-size:clamp(28px,4.6vw,42px);line-height:1.1;letter-spacing:-.025em;margin:0 0 6px}
.doc-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:960px){.doc-grid{grid-template-columns:260px minmax(0,1fr);gap:48px}.toc{position:sticky;top:84px;align-self:start;max-height:calc(100vh - 100px);overflow:auto}}
.toc details,.toc-desktop{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.toc summary,.toc-title{cursor:pointer;font-weight:700;font-size:14px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);list-style:none;margin:0}
.toc summary::after{content:"+";float:right;font-weight:400}.toc details[open] summary::after{content:"‘2"}
.toc-desktop{display:none}
@media (min-width:960px){.toc-mobile{display:none}.toc-desktop{display:block}.toc-title{cursor:default}}
.toc summary::-webkit-details-marker{display:none}
.toc ol{list-style:none;margin:10px 0 0;padding:0}.toc li a{display:block;padding:6px 8px;border-radius:8px;color:var(--fg);text-decoration:none;font-size:14px;line-height:1.4}.toc li a:hover{background:var(--accent-bg);color:var(--accent)}
.prose{max-width:760px;min-width:0}
.tldr{background:var(--accent-bg);border:1px solid var(--line);border-left:4px solid var(--ring);border-radius:14px;padding:18px 20px;margin-bottom:12px}
.tldr h2{margin:0 0 6px;font-size:16px;text-transform:uppercase;letter-spacing:.06em;color:var(--accent)}
.tldr ul{margin:0;padding-left:20px}.tldr li{margin:4px 0}.tldr-note{font-size:13px;color:var(--muted);margin:10px 0 0}
.sec{scroll-margin-top:84px;padding-top:12px}
.sec h2{display:flex;align-items:center;gap:12px;font-size:21px;line-height:1.3;letter-spacing:-.015em;margin:26px 0 10px}
.num{display:inline-grid;place-items:center;min-width:30px;height:30px;border-radius:9px;background:var(--surface);border:1px solid var(--line);font-size:14px;color:var(--accent)}
.anchor{opacity:0;color:var(--muted);text-decoration:none;font-weight:400}.sec h2:hover .anchor{opacity:1}
.prose p,.prose li{color:var(--fg)}.prose ul{padding-left:22px}.prose li{margin:6px 0}.prose li::marker{color:var(--accent)}
.totop{display:inline-flex;align-items:center;gap:6px;margin-top:28px;font-size:14px;text-decoration:none}
.related{margin-top:48px;padding-top:24px;border-top:1px solid var(--line)}.related h2{font-size:20px;letter-spacing:-.015em}
.foot{margin-top:56px;border-top:1px solid var(--line);background:var(--surface);padding:36px 0 28px}
.foot-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:24px}
.foot h3{font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 10px}
.foot ul{list-style:none;margin:0;padding:0}.foot li{margin:6px 0}.foot li a{color:var(--fg);text-decoration:none;font-size:14px}.foot li a:hover{color:var(--accent)}
.foot-note{color:var(--muted);font-size:13px;margin:28px 0 0;max-width:760px}
.notfound{padding:96px 16px;text-align:center}.notfound .lead{margin:0 auto 24px}
@media print{.top,.toc,.foot,.related,.totop,.hero-actions,.anchor{display:none!important}body{background:#fff;color:#000}.doc-grid{display:block}.tldr{border-color:#999}a{color:#000}}