:root{--bg: #0a0b0d;--bg-2: #0d0f12;--panel: #121419;--panel-2: #171a20;--edge: rgba(236, 231, 220, .13);--edge-soft:rgba(236, 231, 220, .07);--chalk: #ece7db;--chalk-dim: #a8a294;--chalk-faint:#6c6860;--gold: #d3b276;--gold-glow: rgba(211, 178, 118, .55);--gold-deep: #a9884b;--cyan: #74d8c6;--cyan-glow: rgba(116, 216, 198, .5);--ember: #dd6f52;--violet: #a99be6;--serif: "Iowan Old Style", "Palatino Linotype", Palatino, "URW Palladio L", "Book Antiqua", Georgia, "Times New Roman", serif;--sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--mono: "SFMono-Regular", ui-monospace, "Cascadia Code", "Roboto Mono", Menlo, "Courier New", monospace;--shadow-plate: 0 40px 90px -50px rgba(0, 0, 0, .9);--shadow-lift: 0 22px 50px -30px rgba(0, 0, 0, .85);color:var(--chalk);background:var(--bg);font-family:var(--serif);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;scroll-behavior:smooth}*{box-sizing:border-box}html{scroll-padding-top:88px}body{margin:0;min-width:320px;color:var(--chalk);background:var(--bg);background-image:repeating-linear-gradient(180deg,transparent 0 39px,var(--edge-soft) 39px 40px),radial-gradient(120% 80% at 50% -10%,rgba(211,178,118,.05),transparent 60%);background-attachment:fixed;overflow-x:hidden}body.is-locked{overflow:hidden}button,a{color:inherit}button{font:inherit}a{text-decoration:none}img,svg,canvas{display:block}::selection{background:var(--gold);color:#14110a}:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:2px}.skip-link{position:fixed;z-index:400;left:18px;top:12px;padding:10px 16px;background:var(--chalk);color:var(--bg);font:600 11px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;transform:translateY(-180%);transition:transform .2s}.skip-link:focus{transform:translateY(0)}.wordmark{display:inline-flex;align-items:center;gap:11px}.wordmark .mark{width:34px;height:34px;flex:0 0 auto}.wordmark .lettering{font:700 20px/1 var(--serif);letter-spacing:.02em;color:var(--chalk);display:inline-flex;align-items:baseline;gap:2px}.wordmark .lettering .tomb{color:var(--gold);font-weight:700;margin-left:3px;text-shadow:0 0 14px var(--gold-glow)}.wordmark .lettering .ticker{font:600 9px/1 var(--mono);letter-spacing:.22em;color:var(--chalk-faint);align-self:center;margin-left:8px;padding-left:9px;border-left:1px solid var(--edge)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;height:46px;padding:0 24px;border:1px solid var(--chalk);background:var(--chalk);color:var(--bg);font:600 13px/1 var(--sans);letter-spacing:.01em;cursor:pointer;transition:transform .18s ease,background .18s ease,color .18s,box-shadow .2s;border-radius:2px}.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lift)}.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}.btn.ghost{background:transparent;color:var(--chalk);border-color:var(--edge)}.btn.ghost:hover{background:#ece7dc0f;border-color:var(--chalk-dim)}.btn.gold{background:var(--gold);border-color:var(--gold);color:#14110a;box-shadow:0 0 24px -6px var(--gold-glow)}.btn.gold:hover{box-shadow:0 0 32px -4px var(--gold-glow),var(--shadow-lift)}.btn.ember{background:var(--ember);border-color:var(--ember);color:#1a0d08}.btn.sm{height:38px;padding:0 16px;font-size:12px}.eyebrow{font:600 10px/1 var(--mono);letter-spacing:.26em;text-transform:uppercase;color:var(--gold);display:inline-flex;align-items:center;gap:10px}.eyebrow:before{content:"";width:26px;height:1px;background:var(--gold);opacity:.8}.chip{display:inline-flex;align-items:center;gap:7px;height:24px;padding:0 10px;border:1px solid currentColor;border-radius:999px;font:600 9.5px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase}.chip .dot{width:6px;height:6px;border-radius:50%;background:currentColor;box-shadow:0 0 8px currentColor}.chip.queued{color:var(--chalk-faint)}.chip.solving{color:var(--cyan)}.chip.solving .dot{animation:chip-pulse 1.4s ease-in-out infinite}.chip.solved{color:var(--gold)}.chip.unsolved{color:var(--ember)}@keyframes chip-pulse{0%,to{opacity:1}50%{opacity:.25}}.disclaimer{font:400 12px/1.55 var(--sans);color:var(--chalk-dim);border-left:2px solid var(--gold);padding:4px 0 4px 14px;max-width:62ch}.disclaimer b{color:var(--chalk);font-weight:600}.lang{position:relative}.lang summary{list-style:none;cursor:pointer;user-select:none;display:inline-flex;align-items:center;gap:8px;height:36px;padding:0 4px;font:600 10px/1 var(--mono);letter-spacing:.12em;color:var(--chalk-dim)}.lang summary::-webkit-details-marker{display:none}.lang summary .caret{transition:transform .22s ease}.lang[open] summary .caret{transform:rotate(180deg)}.lang-list{position:absolute;z-index:200;top:calc(100% + 10px);right:0;width:210px;max-height:60vh;overflow:auto;padding:7px;background:var(--panel);border:1px solid var(--edge);box-shadow:var(--shadow-plate);border-radius:4px}[dir=rtl] .lang-list{right:auto;left:0}.lang-list button{width:100%;min-height:40px;padding:0 11px;display:grid;grid-template-columns:1fr auto;align-items:center;gap:8px;border:0;background:transparent;cursor:pointer;text-align:left;color:var(--chalk);font:500 14px/1.2 var(--serif);border-radius:3px}[dir=rtl] .lang-list button{text-align:right}.lang-list button small{font:600 8.5px/1 var(--mono);letter-spacing:.14em;color:var(--chalk-faint)}.lang-list button:hover,.lang-list button[aria-selected=true]{background:var(--panel-2)}.lang-list button[aria-selected=true] small{color:var(--gold)}.site-footer{border-top:1px solid var(--edge);background:var(--bg-2);padding:54px 6vw 40px}.site-footer .foot-grid{max-width:1160px;margin:0 auto;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;align-items:start}.site-footer .foot-blurb{max-width:40ch;color:var(--chalk-dim);font:400 14px/1.6 var(--serif);margin:16px 0 0}.site-footer h4{font:600 10px/1 var(--mono);letter-spacing:.2em;text-transform:uppercase;color:var(--chalk-faint);margin:0 0 16px}.site-footer nav{display:grid;gap:11px}.site-footer nav a{font:400 14px/1 var(--serif);color:var(--chalk-dim);width:fit-content;border-bottom:1px solid transparent}.site-footer nav a:hover{color:var(--chalk);border-color:var(--edge)}.site-footer .foot-base{max-width:1160px;margin:40px auto 0;padding-top:22px;border-top:1px solid var(--edge);display:flex;flex-wrap:wrap;gap:14px 26px;align-items:center;justify-content:space-between;font:500 10px/1.5 var(--mono);letter-spacing:.06em;color:var(--chalk-faint);text-transform:uppercase}.site-footer .foot-base a{color:var(--chalk-dim)}.site-footer .foot-base a:hover{color:var(--gold)}.mathtext{color:inherit}.mt-inline{white-space:normal}.mt-display{display:block;margin:10px 0;overflow-x:auto;overflow-y:hidden}.mt-display .katex-display{margin:0}.mt-parabreak{display:block;height:.7em}.mt-h{display:block;font-weight:700;color:var(--chalk);margin:.6em 0 .2em}.mt-prose code{font:400 .86em/1.5 var(--mono);color:var(--chalk);background:var(--panel-2);border:1px solid var(--edge-soft);border-radius:3px;padding:1px 5px}.katex-fail{color:var(--ember);font-family:var(--mono);font-size:.9em}.mathtext .katex{color:inherit}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}[hidden]{display:none!important}@media(max-width:720px){.site-footer .foot-grid{grid-template-columns:1fr;gap:30px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}.chip.solving .dot{animation:none}}