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rgba(0,0,0,.7);--accent-fg:#221520;--night:#14172a;--night-2:#1b1f33;--night-3:#262b45;--night-ink:#eceaf6;--night-muted:#b9b6cf}}:root[data-theme=dark]{--bg:#1b1e2e;--glow-1:rgba(151,36,45,.30);--glow-2:rgba(184,134,47,.16);--surface:#232739;--surface-2:#2b3048;--surface-3:#343a56;--ink:#eceaf6;--ink-soft:#b9b6cf;--ink-faint:#8d89a8;--line:#39405c;--line-strong:#4a5273;--crimson:#ff8f86;--crimson-bright:#ffa79c;--crimson-soft:#43262a;--crimson-deep:#ffb4aa;--gold:#e5b567;--gold-soft:#3d3220;--ch1:#ff8f86;--ch1-soft:#43262a;--ch2:#f0a25e;--ch2-soft:#402d1e;--ch3:#ddc06a;--ch3-soft:#3a3320;--ok:#63c58e;--ok-soft:#1e3a2c;--bad:#ff8f86;--bad-soft:#43262a;--warn:#e5a95e;--warn-soft:#3d2f1d;--focus:rgba(255,143,134,.5);--accent-fg:#221520;--shadow-card:0 1px 2px rgba(0,0,0,.3),0 8px 28px -14px rgba(0,0,0,.6);--shadow-lift:0 4px 10px rgba(0,0,0,.35),0 18px 44px -18px rgba(0,0,0,.7);--night:#14172a;--night-2:#1b1f33;--night-3:#262b45;--night-ink:#eceaf6;--night-muted:#b9b6cf}*,:after,:before{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:var(--sans);font-size:15.5px;line-height:1.68;background-color:var(--bg);background-image:radial-gradient(60vw 40vw at 88% -6%,var(--glow-1),transparent 62%),radial-gradient(52vw 36vw at 4% -4%,var(--glow-2),transparent 60%);background-attachment:fixed;background-repeat:no-repeat;-webkit-font-smoothing:antialiased;min-height:100vh;display:flex;flex-direction:column}body>main{flex:1 1}a{color:var(--crimson);text-decoration:none;transition:color var(--dur) var(--ease)}a:hover{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}h1,h2,h3{font-family:var(--serif);font-weight:700;line-height:1.25;margin:0;text-wrap:balance}h1{font-size:clamp(1.7rem,1.3rem + 2vw,2.4rem);letter-spacing:.01em}h2{font-size:1.3rem}h3{font-size:1.1rem}p{margin:.5em 0}em{font-style:normal;color:var(--crimson)}.mono,code{font-family:var(--mono);font-size:.9em}button{font:inherit;color:inherit}input,select,textarea{font:inherit;color:var(--ink)}.katex{font-size:1.02em}@media (prefers-reduced-motion:reduce){*,:after,:before{transition:none!important;animation:none!important}}.hl{color:var(--crimson)}.topnav{height:var(--nav-h);background:color-mix(in srgb,var(--surface) 82%,transparent);backdrop-filter:saturate(1.5) blur(12px);-webkit-backdrop-filter:saturate(1.5) blur(12px);border-bottom:1px solid var(--line);position:-webkit-sticky;position:sticky;top:0;z-index:30}.topnav .in{max-width:var(--wrap);margin:0 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var(--line-strong);border-radius:999px;color:var(--ink);background:var(--surface);font-weight:600}.userchip:hover{text-decoration:none;border-color:var(--crimson)}.navmenu{display:none;position:relative}.navmenu summary{list-style:none;cursor:pointer;width:38px;height:38px;display:grid;place-items:center;grid-gap:4px;gap:4px;border:1px solid var(--line-strong);border-radius:999px;background:var(--surface)}.navmenu summary::-webkit-details-marker{display:none}.navmenu summary span{display:block;width:15px;height:1.5px;background:var(--ink)}.navmenu nav{position:absolute;right:0;top:46px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-lift);min-width:168px;padding:6px;display:grid}.navmenu nav a{padding:10px 12px;color:var(--ink);border-radius:var(--radius-sm);font-weight:600}.navmenu nav a[aria-current=page]{background:var(--crimson-soft);color:var(--crimson)}@media (max-width:860px){.navlinks{display:none}.navmenu{display:block}.topnav .in{gap:12px}.userchip .nick{display:none}.userchip{padding:3px;border:0}}.page{max-width:var(--wrap);margin:0 auto;padding:32px 0 64px;width:100%}@media (max-width:760px){.page{padding:20px 0 48px}}.page-head{margin-bottom:26px}.page-head .sub{color:var(--ink-soft);margin-top:8px;max-width:70ch}.eyebrow{font-family:var(--sans);font-size:12px;letter-spacing:.16em;color:var(--ink-faint);text-transform:uppercase;font-weight:700}.eyebrow.acc{color:var(--crimson)}.two{grid-template-columns:minmax(0,1fr) minmax(280px,.48fr);grid-gap:24px;gap:24px;align-items:start}.three,.two{display:grid}.three{grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:20px;gap:20px}@media (max-width:980px){.three,.two{grid-template-columns:1fr}}.stack{display:grid;grid-gap:24px;gap:24px}.sitefoot{border-top:1px solid var(--line);margin-top:56px;padding:20px 0;font-size:13px;color:var(--ink-faint)}.sitefoot 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var(--ease)}.row-card:hover{text-decoration:none;transform:translateY(-2px);box-shadow:var(--shadow-lift);border-color:var(--line-strong)}.row-card .t{font-family:var(--serif);font-weight:700;font-size:1.08rem}.row-card .d{color:var(--ink-soft);font-size:14px}.row-card .go{color:var(--crimson);white-space:nowrap;font-weight:600}@media (max-width:760px){.row-card{grid-template-columns:1fr;gap:8px}}.feed{list-style:none;margin:0;padding:0}.feed li{display:grid;grid-template-columns:32px 1fr auto;grid-gap:12px;gap:12px;align-items:center;padding:11px 0;border-bottom:1px solid var(--line)}.feed li:last-child{border-bottom:0}.feed .who{font-weight:700;margin-right:6px}.feed .when{color:var(--ink-faint);font-size:12.5px;font-family:var(--mono)}.chapters{display:grid;grid-gap:10px;gap:10px}.chapter-row{display:grid;grid-template-columns:34px 1fr;grid-gap:14px;gap:14px;align-items:baseline;padding:16px 20px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);color:var(--ink)}.chapter-row:hover{text-decoration:none;border-color:var(--line-strong);box-shadow:var(--shadow-card)}.chapter-row .n{font-family:var(--serif);font-size:1.2rem;color:var(--crimson);font-weight:700}.chapter-row b{font-weight:700}.chapter-row .d{color:var(--ink-soft);font-size:14px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 22px;border:1px solid var(--line-strong);background:var(--surface);color:var(--ink);border-radius:999px;cursor:pointer;font-weight:600;line-height:1.3;box-shadow:var(--shadow-card);transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease)}.btn,.btn:hover{text-decoration:none}.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lift);border-color:var(--crimson);color:var(--crimson)}.btn:active{transform:translateY(0)}.btn.primary{background:linear-gradient(135deg,var(--crimson),var(--crimson-bright));border-color:transparent;color:#fff}.btn.primary:hover{color:#fff;filter:brightness(1.06)}.btn.ok{background:var(--ok);border-color:transparent}.btn.ok,.btn.ok:hover,.btn.xp{color:#fff}.btn.xp{background:var(--gold);border-color:transparent}.btn.ghost{background:transparent;border-color:var(--line-strong);color:var(--ink-soft);box-shadow:none}.btn.ghost:hover{color:var(--crimson)}.btn.sm{padding:6px 15px;font-size:13px}.btn.lg{padding:13px 30px;font-size:1.02rem}.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}.field{display:grid;grid-gap:6px;gap:6px;margin-bottom:15px}.field label{font-size:13px;color:var(--ink-soft);font-weight:600}.input{width:100%;padding:11px 14px;border:1px solid var(--line-strong);background:var(--surface);border-radius:var(--radius-sm);transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}.input:focus{border-color:var(--crimson);outline:none;box-shadow:0 0 0 3px var(--crimson-soft)}.err{color:var(--bad);font-size:13.5px}.err,.tag{font-weight:600}.tag{display:inline-block;font-size:12px;padding:3px 11px;border:1px solid var(--line-strong);color:var(--ink-soft);border-radius:999px;line-height:1.5}.tag.ok{color:var(--ok);border-color:color-mix(in srgb,var(--ok) 45%,transparent);background:var(--ok-soft)}.tag.warn{color:var(--warn);border-color:color-mix(in srgb,var(--warn) 45%,transparent);background:var(--warn-soft)}.tag.acc{color:var(--crimson);border-color:color-mix(in srgb,var(--crimson) 40%,transparent);background:var(--crimson-soft)}.tag.xp{color:var(--gold);border-color:color-mix(in srgb,var(--gold) 45%,transparent);background:var(--gold-soft)}.tag.logic{color:var(--ch1);border-color:color-mix(in srgb,var(--ch1) 40%,transparent);background:var(--ch1-soft)}.tag.set{color:var(--ch2);border-color:color-mix(in srgb,var(--ch2) 40%,transparent);background:var(--ch2-soft)}.tag.graph{color:var(--ch3);border-color:color-mix(in srgb,var(--ch3) 40%,transparent);background:var(--ch3-soft)}.muted{color:var(--ink-soft)}.small{font-size:13px}.num{font-family:var(--mono);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.seg{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line-strong);border-radius:999px;overflow:hidden}.seg button{padding:12px 10px;border:0;background:var(--surface);cursor:pointer;font-size:1rem;font-weight:600;transition:background var(--dur) var(--ease)}.seg button+button{border-left:1px solid var(--line-strong)}.seg button:hover{background:var(--surface-2)}.seg button[aria-pressed=true]{background:var(--crimson);color:#fff}.list{list-style:none;margin:0;padding:0}.list li{padding:11px 0;border-bottom:1px solid var(--line)}.list li:last-child{border-bottom:0}.callout{border-left:3px solid var(--crimson);background:var(--crimson-soft);padding:12px 16px;border-radius:0 var(--radius-sm) var(--radius-sm) 0}.empty{color:var(--ink-soft);padding:30px 20px;text-align:center}.chips,.tabs{display:flex;gap:8px;flex-wrap:wrap}.tabs{margin-bottom:18px}.chip,.tabs a{padding:5px 14px;color:var(--ink-soft);border:1px solid var(--line-strong);border-radius:999px;display:inline-flex;gap:7px;align-items:center;font-weight:600;background:var(--surface);font-size:13.5px;cursor:pointer;transition:all var(--dur) var(--ease)}.chip:hover,.tabs a:hover{color:var(--crimson);text-decoration:none;border-color:var(--crimson)}.chip[data-active=true],.tabs a[aria-current=page]{color:#fff;background:var(--crimson);border-color:var(--crimson)}.tabs .c{font-family:var(--mono);font-size:11px;color:var(--ink-faint)}.tabs a[aria-current=page] .c{color:rgba(255,255,255,.8)}.axis{display:grid;grid-template-columns:8.5em 1fr 4em auto;grid-gap:12px;gap:12px;align-items:center;padding:9px 0}.axis .lab{font-size:14px;font-weight:600}.axis .track{position:relative;height:20px}.axis .track:before{content:"";position:absolute;left:0;right:0;top:50%;height:4px;margin-top:-2px;background:var(--surface-3);border-radius:2px}.axis .track .tick{width:1px;height:8px;background:var(--line-strong)}.axis .dot,.axis .track .tick{position:absolute;top:50%;transform:translate(-50%,-50%)}.axis .dot{width:14px;height:14px;border-radius:50%;transition:left .3s var(--ease)}.axis .dot.prior{border:1.5px solid var(--ink-faint);background:var(--surface)}.axis .dot.now{background:var(--crimson);box-shadow:0 0 0 3px var(--crimson-soft)}.axis input[type=range]{position:absolute;inset:0;width:100%;opacity:0;cursor:pointer;margin:0}.axis .side{font-size:13px;color:var(--ink-faint);text-align:right;font-weight:600}.steps{list-style:none;margin:0;padding:0}.steps li{display:grid;grid-template-columns:26px 1fr auto;grid-gap:11px;gap:11px;align-items:center;padding:10px 0;border-bottom:1px solid var(--line)}.steps li:last-child{border-bottom:0}.steps .n{width:24px;height:24px;border-radius:50%;border:1px solid var(--line-strong);display:grid;place-items:center;font-family:var(--mono);font-size:12px;color:var(--ink-faint);background:var(--surface)}.steps .n.done{background:var(--gold);border-color:var(--gold);color:#fff}.steps .n.cur{background:var(--crimson);border-color:var(--crimson);color:#fff}.steps .s{font-size:13px;color:var(--ink-faint)}.steps .s.done{color:var(--gold)}.steps .s.cur{color:var(--crimson)}.bar{height:6px;background:var(--surface-3);border-radius:999px;overflow:hidden;border:0}.bar i{display:block;height:100%;background:var(--crimson);border-radius:999px;transition:width .6s var(--ease)}.legend{display:flex;flex-wrap:wrap;gap:16px;font-size:13px;color:var(--ink-faint);padding-top:10px}.legend i{display:inline-block;width:10px;height:10px;border-radius:50%;vertical-align:-1px;margin-right:6px;border:1px solid var(--line-strong);background:var(--surface)}.legend i.ok{background:var(--gold);border-color:var(--gold)}.legend i.acc{background:var(--crimson-soft);border-color:var(--crimson)}.legend i.warn{background:var(--ch2);border-color:var(--ch2)}.starmap svg{width:100%;height:auto;display:block}.starmap text{font-family:var(--mono)}.sky{position:relative;background:var(--surface-2);border-radius:var(--radius);overflow:hidden;padding:10px;border:1px solid var(--line)}.sky:before{content:"";position:absolute;inset:0;background-image:radial-gradient(var(--line-strong) .8px,transparent .9px);background-size:22px 22px;opacity:.5;pointer-events:none}.sky svg{position:relative}.sky text{font-family:var(--mono)}.sky .legend{color:var(--ink-faint);padding:6px 8px 2px;position:relative}.tw{animation:twinkle 3.4s ease-in-out infinite}@keyframes twinkle{0%,to{opacity:1}50%{opacity:.72}}.ring{display:inline-grid;place-items:center;position:relative}.ring svg{transform:rotate(-90deg)}.ring .pct{position:absolute;font-family:var(--mono);font-size:11px;color:var(--ink-faint)}.empty-ill{display:grid;place-items:center;grid-gap:8px;gap:8px;padding:28px 16px;color:var(--ink-soft);text-align:center}.empty-ill .sym{font-family:var(--serif);font-size:2.4rem;line-height:1;color:var(--line-strong)}.cicon{width:44px;height:44px;color:var(--crimson);flex:none}.cicon .ac{fill:var(--crimson-soft)}.cicon .wm{fill:var(--ch2-soft)}.xpbar{display:flex;align-items:center;gap:10px}.xpbar .lvl{display:inline-grid;place-items:center;width:32px;height:32px;border-radius:var(--radius-sm);background:var(--gold-soft);border:1px solid var(--gold);color:var(--gold);font-weight:700;font-family:var(--mono);font-size:14px}.xpbar .bar{flex:1 1;height:6px}.xpbar .bar 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h3{margin:1.6em 0 .5em}.prose h2{font-size:1.3rem;padding-bottom:7px;border-bottom:1px solid var(--line)}.prose pre{padding:13px 15px;overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-sm);font-size:13.5px}.prose code,.prose pre{background:var(--surface-2)}.prose code{padding:.12em .4em;border-radius:var(--radius-xs)}.prose pre code{background:none;padding:0}.prose table{border-collapse:collapse;font-size:14px}.prose td,.prose th{border:1px solid var(--line);padding:7px 11px}.prose blockquote,.prose tbody tr:nth-child(2n),.prose th{background:var(--surface-2)}.prose blockquote{border-left:3px solid var(--crimson);margin:1em 0;padding:8px 16px;color:var(--ink-soft);border-radius:0 var(--radius-sm) var(--radius-sm) 0}.prose img{max-width:100%}.prose p:first-child{margin-top:0}.note-prose{font-size:15.5px;line-height:1.95}.note-prose h2{font-size:1.4rem;margin-top:1.9em;font-family:var(--serif)}.note-prose h2,.note-prose h3{scroll-margin-top:80px}.note-prose 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