:root{--bg:#fff;--fg:#1f2328;--mut:#6b7280;--line:#e5e7eb;--acc:#b91c1c;--accbg:#fef2f2;--side:#fafafa;--code:#f3f4f6}
@media(prefers-color-scheme:dark){:root{--bg:#141517;--fg:#e6e6e6;--mut:#9ca3af;--line:#2d2f33;--acc:#f87171;--accbg:#2a1717;--side:#1a1b1e;--code:#232529}}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:70px}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.7 Inter,system-ui,-apple-system,"Segoe UI",sans-serif}
a{color:var(--acc);text-decoration:none}a:hover{text-decoration:underline}
.top{position:sticky;top:0;z-index:20;height:52px;display:flex;align-items:center;gap:12px;padding:0 16px;background:var(--bg);border-bottom:1px solid var(--line)}
.top .tl{color:var(--fg);font-weight:600}#mb{display:none;background:none;border:0;font-size:22px;color:var(--fg);cursor:pointer}
.logo{width:36px;height:36px;object-fit:contain}.logo.big{width:72px;height:72px;filter:brightness(0) invert(1)}
.wrap{display:grid;grid-template-columns:290px minmax(0,1fr) 230px;max-width:1500px;margin:0 auto}
.side{position:sticky;top:52px;height:calc(100vh - 52px);overflow:auto;padding:16px;background:var(--side);border-right:1px solid var(--line);font-size:14px;line-height:1.45}
.brand{display:flex;align-items:center;gap:10px;color:var(--fg);font-weight:600;margin-bottom:12px}.brand:hover{text-decoration:none}
.q{width:100%;padding:9px 12px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--fg);font:inherit;font-size:14px}
.qr{margin-top:8px;border:1px solid var(--line);border-radius:8px;background:var(--bg);max-height:60vh;overflow:auto}
.qr a{display:block;padding:8px 12px;color:var(--fg);border-bottom:1px solid var(--line)}.qr a small{display:block;color:var(--mut)}.qr a:hover{background:var(--accbg);text-decoration:none}
.grp{margin-top:6px}.grp summary{cursor:pointer;font-weight:600;padding:6px 4px;list-style:none}.grp summary::-webkit-details-marker{display:none}
.grp summary:before{content:"▸";display:inline-block;width:14px;color:var(--mut)}.grp[open] summary:before{content:"▾"}
.n{font-weight:400;color:var(--mut);font-size:12px;margin-left:4px}
.grp ul{list-style:none;margin:0;padding:0 0 4px 14px}.grp li a{display:block;padding:4px 8px;border-radius:6px;color:var(--fg)}.grp li a:hover{background:var(--accbg);text-decoration:none}.grp li a.on{background:var(--accbg);color:var(--acc);font-weight:600}
main{padding:28px 40px 60px;min-width:0}article{max-width:820px;margin:0 auto}
.crumb{font-size:13px;color:var(--mut)}h1{font-size:32px;line-height:1.25;margin:.3em 0 .8em;font-weight:600}
h2,h3,h4,h5{font-weight:600;line-height:1.35;margin:1.8em 0 .6em}h2{font-size:26px;border-bottom:1px solid var(--line);padding-bottom:6px}h3{font-size:21px}h4{font-size:18px}h5{font-size:16px}
.anc{opacity:0;margin-left:8px;font-size:.8em}h2:hover .anc,h3:hover .anc,h4:hover .anc{opacity:.6}
p{margin:.6em 0}ol,ul{padding-left:1.6em;margin:.5em 0}li{margin:.35em 0}ol ol{list-style:lower-alpha}ol ol ol{list-style:lower-roman}ul.todo{list-style:none;padding-left:.4em}
.indent{margin-left:1.2em}
figure.img{margin:1em 0}figure.img img{display:block;max-width:100%;height:auto;border:1px solid var(--line);border-radius:8px;cursor:zoom-in}figcaption{color:var(--mut);font-size:13px;margin-top:4px}
blockquote{margin:1em 0;padding:.4em 1em;border-left:4px solid var(--acc);background:var(--accbg);border-radius:0 8px 8px 0}
.callout{display:flex;gap:12px;margin:1em 0;padding:14px 16px;border-radius:10px;background:var(--code);border:1px solid var(--line)}.callout .ico{font-size:20px;line-height:1.5}.callout>div{min-width:0;flex:1}.callout p,.callout ol,.callout ul{margin:.3em 0}
details.tg{margin:.8em 0;border:1px solid var(--line);border-radius:10px;padding:0 14px}details.tg>summary{cursor:pointer;font-weight:600;padding:10px 0;display:flex;gap:10px}.tb{padding:0 0 12px}details.callout{display:block}
pre{background:var(--code);padding:14px;border-radius:8px;overflow:auto;font-size:14px}code{background:var(--code);padding:2px 5px;border-radius:4px;font-size:.9em}pre code{padding:0;background:none}
.cols{display:flex;gap:24px;flex-wrap:wrap}.col{min-width:240px;flex:1}.tw{overflow:auto}table{border-collapse:collapse;margin:1em 0}td,th{border:1px solid var(--line);padding:8px 12px;text-align:left;vertical-align:top}th{background:var(--code)}
hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.bg-gray{background:var(--code)}.bg-red{background:#fde8e8;color:#1f2328}.bg-yellow{background:#fef6d8;color:#1f2328}.bg-blue{background:#e1effe;color:#1f2328}.bg-green{background:#def7ec;color:#1f2328}.bg-orange{background:#feecdc;color:#1f2328}.bg-purple{background:#edebfe;color:#1f2328}.bg-pink{background:#fce8f3;color:#1f2328}.bg-brown{background:#f0e4d8;color:#1f2328}
.tc-red{color:#dc2626}.tc-blue{color:#2563eb}.tc-green{color:#059669}.tc-orange{color:#ea580c}.tc-yellow{color:#ca8a04}.tc-gray{color:var(--mut)}.tc-purple{color:#7c3aed}.tc-pink{color:#db2777}.tc-brown{color:#92400e}
span[class^=bg-]{padding:0 3px;border-radius:3px}
.toc{position:sticky;top:52px;align-self:start;max-height:calc(100vh - 52px);overflow:auto;padding:28px 16px;font-size:13px;line-height:1.4}.toc .th{font-weight:600;margin-bottom:8px}.toc a{display:block;padding:3px 0;color:var(--mut)}.toc a:hover{color:var(--acc)}.toc .l4{padding-left:12px}
.meta{margin-top:3em;font-size:13px;color:var(--mut)}.pn{display:flex;justify-content:space-between;gap:16px;margin-top:20px}.pn a{flex:1;border:1px solid var(--line);border-radius:10px;padding:12px 16px;color:var(--fg)}.pn a.r{text-align:right}.pn small{display:block;color:var(--mut)}.pn a:hover{border-color:var(--acc);text-decoration:none}
#lb{position:fixed;inset:0;background:rgba(0,0,0,.85);display:grid;place-items:center;z-index:50;cursor:zoom-out}#lb[hidden]{display:none}#lb img{max-width:96vw;max-height:94vh}
.hero{background:linear-gradient(135deg,#3b0a0a,#7f1d1d 60%,#b91c1c);color:#fff;padding:56px 16px}.hi{max-width:760px;margin:0 auto}.hero h1{font-size:38px;margin:.4em 0 .2em;color:#fff}.hero p{opacity:.9;margin:0 0 20px}.hq{position:relative}.hq .qr{position:absolute;left:0;right:0;z-index:10;color:var(--fg)}.hero .q{padding:13px 16px;font-size:16px}
.hm{max-width:1100px;margin:0 auto;padding:32px 16px;display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}.gc{border:1px solid var(--line);border-radius:12px;padding:16px 18px}.gc h2{font-size:17px;margin:0 0 8px;border:0;padding:0}.gc ul{list-style:none;padding:0;margin:0}.gc li{margin:0;border-top:1px solid var(--line)}.gc li a{display:block;padding:7px 0;color:var(--fg);font-size:15px}.gc li a:hover{color:var(--acc);text-decoration:none}
footer{text-align:center;color:var(--mut);font-size:13px;padding:24px}
@media(max-width:1180px){.wrap{grid-template-columns:270px minmax(0,1fr)}.toc{display:none}}
@media(max-width:820px){#mb{display:block}.wrap{display:block}.side{position:fixed;left:0;top:52px;width:86vw;max-width:320px;z-index:30;transform:translateX(-105%);transition:.2s}.side.open{transform:none;box-shadow:0 0 40px rgba(0,0,0,.4)}main{padding:20px 16px 48px}h1{font-size:26px}.hero h1{font-size:28px}}

details.hd{margin:0}details.hd>summary{list-style:none;cursor:pointer;display:block;position:relative;padding-left:22px}details.hd>summary::-webkit-details-marker{display:none}details.hd>summary:before{content:'▸';position:absolute;left:0;top:.55em;font-size:.7em;color:var(--mut);transition:transform .15s}details.hd[open]>summary:before{transform:rotate(90deg)}details.hd>.tb{padding:0 0 4px 22px;border-left:2px solid var(--line);margin-left:6px}
details.hd>summary{list-style:none!important;display:block!important}details.hd>summary::marker{content:''!important;font-size:0}details.hd>summary>h1,details.hd>summary>h2,details.hd>summary>h3,details.hd>summary>h4,details.hd>summary>h5{margin:.5em 0;display:block}details.hd>summary:before{top:.9em}
.tabs{max-width:1100px;margin:0 auto;padding:20px 16px 0;display:flex;gap:6px;overflow-x:auto;border-bottom:1px solid var(--line);scrollbar-width:none}.tabs::-webkit-scrollbar{display:none}
.tabs button{font:inherit;font-size:14px;white-space:nowrap;cursor:pointer;border:0;background:none;color:var(--mut);padding:8px 14px;border-radius:8px 8px 0 0;border-bottom:2px solid transparent;margin-bottom:-1px}
.tabs button:hover{background:var(--accbg)}.tabs button.on{color:var(--acc);font-weight:600;border-bottom-color:var(--acc)}
.tabs button .n{font-size:12px;opacity:.7;margin-left:4px}
.hm.tabbed{padding-top:24px}
.tag{display:inline-block;font-size:12px;line-height:1.5;padding:1px 8px;border-radius:5px;background:#fde0dc;color:#5d1f1a;margin-left:6px;vertical-align:middle;font-weight:400;white-space:nowrap}
h1+.tags{margin:-4px 0 14px}.tags .tag{margin:0 6px 0 0}