:root{--bg:#f5f2ea;--ink:#0d0d0d;--muted:#5f5a50;--hair:#cdc7ba;--accent:#c42a18;--grain:.07;--peer:color-mix(in srgb, var(--ink) 7%, transparent);--same:color-mix(in srgb, var(--ink) 17%, transparent);--lesson:color-mix(in srgb, var(--accent) 18%, transparent);--f-display:"Archivo Black", "Arial Black", Impact, sans-serif;--f-text:"Archivo", "Helvetica Neue", Arial, sans-serif;--f-mono:"JetBrains Mono", ui-monospace, Consolas, monospace;--gutter-l:max(16px, env(safe-area-inset-left,0px));--gutter-r:max(16px, env(safe-area-inset-right,0px));--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#0d0d0d;--ink:#f5f2ea;--muted:#a8a296;--hair:#36332e;--accent:#ff4e38;--grain:.05;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}:root[data-theme=dark]{--bg:#0d0d0d;--ink:#f5f2ea;--muted:#a8a296;--hair:#36332e;--accent:#ff4e38;--grain:.05;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}html,body{overscroll-behavior:none;min-height:100%}html{-webkit-tap-highlight-color:transparent}body{background:var(--bg);color:var(--ink);font-family:var(--f-text);-webkit-text-size-adjust:100%;padding-top:env(safe-area-inset-top,0px);margin:0;font-size:16px;line-height:1.4}[hidden]{display:none!important}button{font:inherit;color:inherit;cursor:pointer;touch-action:manipulation;background:0 0;border:0;padding:0}button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.wrap{max-width:560px;padding-left:var(--gutter-l);padding-right:var(--gutter-r);margin-inline:auto}.mono{font-family:var(--f-mono)}.muted{color:var(--muted)}.grain{pointer-events:none;z-index:60;opacity:var(--grain);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)'/%3E%3C/svg%3E");position:fixed;inset:0}.text-btn{min-height:44px;font-family:var(--f-mono);letter-spacing:.08em;text-transform:uppercase;white-space:nowrap;align-items:center;padding:8px 0;font-size:12px;font-weight:700;display:inline-flex}.eyebrow{font-family:var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0;font-size:12px;font-weight:700}.notice{font-family:var(--f-mono);color:var(--accent);margin:0;font-size:13px;line-height:1.5}.play{background:var(--ink);width:100%;color:var(--bg);font-family:var(--f-display);letter-spacing:-.01em;text-transform:uppercase;text-align:left;padding:20px 16px;font-size:26px;display:block;position:relative}.play:after{content:"→";position:absolute;top:50%;right:16px;transform:translateY(-52%)}.play:active{transform:translateY(2px)}.play.secondary{color:var(--ink);border:3px solid var(--ink);background:0 0;padding-block:16px;font-size:18px}.home-wrap{flex-direction:column;gap:24px;min-height:100svh;padding-block:20px 40px;display:flex}.home-top{letter-spacing:.08em;text-transform:uppercase;justify-content:space-between;align-items:center;font-size:11px;display:flex}.hero{font-family:var(--f-display);letter-spacing:-.038em;text-transform:uppercase;margin:0;font-size:min(21vw,128px);font-weight:400;line-height:.82}.hero span{margin-left:-.05em;display:block}.tagline{max-width:30ch;margin:0;font-size:18px;font-weight:500;line-height:1.35}#continue,#continue[hidden]+#open-campaign{margin-top:auto}.bar{z-index:20;background:var(--bg);border-bottom:3px solid var(--ink);position:sticky;top:0}.bar>.wrap{align-items:center;gap:12px;padding-block:4px;display:flex}.bar .spacer{flex:1}.bar-title{letter-spacing:.12em;text-transform:uppercase;font-size:12px;font-weight:700}.levels{flex-direction:column;gap:20px;margin:0;padding:16px 0 40px;list-style:none;display:flex}.level-head{justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:8px;display:flex}.level-name{font-family:var(--f-display);text-transform:uppercase;margin:0;font-size:22px;line-height:1}.level-name small{font-family:var(--f-mono);letter-spacing:.1em;color:var(--muted);margin-top:4px;font-size:11px;font-weight:700;display:block}.level-stars{font-family:var(--f-mono);font-variant-numeric:tabular-nums;font-size:12px;font-weight:700}.level-row{grid-template-columns:repeat(7,minmax(0,1fr));gap:4px;display:grid}.slot{aspect-ratio:1;border:2px solid var(--ink);font-family:var(--f-display);flex-direction:column;justify-content:center;align-items:center;gap:5px;font-size:18px;line-height:1;display:flex}.slot.won{background:var(--ink);color:var(--bg)}.slot:disabled{border-style:dashed;border-color:var(--hair);color:var(--hair);cursor:default}.slot-stars{gap:2px;display:flex}.slot-stars i{border:1.5px solid;width:6px;height:6px}.slot-stars i.on{background:currentColor}.level-rule{font-family:var(--f-mono);color:var(--muted);margin:8px 0 0;font-size:11px}.screen{flex-direction:column;gap:14px;padding-block:14px 28px;display:flex}.board-head{justify-content:space-between;align-items:flex-end;gap:12px;display:flex}.board-title{font-family:var(--f-display);text-transform:uppercase;letter-spacing:-.03em;margin:4px 0 0;font-size:min(13vw,56px);font-weight:400;line-height:.86}.marks{gap:6px;padding-bottom:4px;display:flex}.marks i{border:2px solid var(--ink);width:16px;height:16px}.marks i.on{background:var(--accent);border-color:var(--accent)}.board{aspect-ratio:1;border:3px solid var(--ink);-webkit-user-select:none;user-select:none;grid-template-columns:repeat(9,minmax(0,1fr));width:100%;display:grid}.cell{border-right:1px solid var(--hair);border-bottom:1px solid var(--hair);font-variant-numeric:tabular-nums;place-items:center;min-width:0;line-height:1;display:grid;position:relative}.cell.c2,.cell.c5{border-right:3px solid var(--ink)}.cell.c8{border-right:0}.cell.r2,.cell.r5{border-bottom:3px solid var(--ink)}.cell.r8{border-bottom:0}.cell.peer{background:var(--peer)}.cell.same{background:var(--same)}.cell.lesson{background:var(--lesson)}.cell.sel{background:var(--ink);color:var(--bg)}.digit{font-family:var(--f-text);font-size:min(6.6vw,30px);font-weight:500}.cell.given .digit{font-family:var(--f-display);font-weight:400}.cell.wrong .digit{color:var(--accent);background-image:var(--slash);background-size:100% 100%;padding:2px 3px}.cell.placed .digit{animation:.17s ease-out stamp}@keyframes stamp{0%{transform:scale(1.22)}to{transform:scale(1)}}.notes{text-align:center;font-family:var(--f-mono);color:var(--muted);grid-template-rows:repeat(3,1fr);grid-template-columns:repeat(3,1fr);align-items:center;font-size:min(2.6vw,11px);font-weight:600;display:grid;position:absolute;inset:2px}.notes .gone{color:var(--accent);text-decoration:line-through}.cell.sel .notes{color:var(--bg);opacity:.8}.tools{border:2px solid var(--ink);grid-template-columns:repeat(3,1fr);display:grid}.tools button{min-height:46px;font-family:var(--f-mono);letter-spacing:.08em;text-transform:uppercase;font-size:12px;font-weight:700}.tools button+button{border-left:2px solid var(--ink)}.tools button[aria-pressed=true]{background:var(--ink);color:var(--bg)}.pad{grid-template-columns:repeat(9,minmax(0,1fr));gap:4px;display:grid}.pad button{background:var(--ink);min-height:58px;color:var(--bg);font-family:var(--f-display);font-size:24px}.pad button:active{transform:translateY(2px)}.pad button:disabled{color:var(--hair);border:2px dashed var(--hair);cursor:default;background:0 0;transform:none}body.notes-on .pad button:not(:disabled){color:var(--ink);border:2px solid var(--ink);font-family:var(--f-mono);background:0 0;font-size:18px;font-weight:700}.sheet{z-index:30;background:var(--bg);border-top:3px solid var(--ink);padding-bottom:env(safe-area-inset-bottom,0px);animation:.3s cubic-bezier(.2,.8,.2,1) rise;position:fixed;bottom:0;left:0;right:0}.sheet>.wrap{flex-direction:column;gap:12px;padding-block:18px 20px;display:flex}.lesson-intro{color:var(--muted);margin:0;font-size:13px}.lesson-intro:empty{display:none}.lesson-text{max-width:60ch;margin:0;font-size:17px;font-weight:500;line-height:1.4}.confirm-sheet .text-btn{align-self:flex-start}@keyframes rise{0%{opacity:.6;transform:translateY(32%)}to{opacity:1;transform:none}}.overlay{z-index:40;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px);animation:.3s cubic-bezier(.2,.8,.2,1) rise;position:fixed;inset:0;overflow:auto}.result{background:var(--ink);color:var(--bg)}.result>.wrap{flex-direction:column;gap:22px;min-height:100%;padding-block:32px;display:flex}.result .eyebrow{color:var(--bg);opacity:.7}.result-title{font-family:var(--f-display);text-transform:uppercase;letter-spacing:-.035em;margin:0;font-size:min(19vw,104px);font-weight:400;line-height:.84}.result-stars{gap:8px;display:flex}.result-stars i{border:3px solid var(--bg);width:28px;height:28px}.result-stars i.on{background:var(--bg)}.facts{border-top:3px solid var(--bg);grid-template-columns:1fr 1fr;margin:0;display:grid}.facts div{padding-top:12px}.facts div+div{border-left:3px solid var(--bg);padding-left:14px}.facts dt{font-family:var(--f-mono);letter-spacing:.1em;text-transform:uppercase;opacity:.7;font-size:11px;font-weight:700}.facts dd{font-family:var(--f-display);font-variant-numeric:tabular-nums;margin:6px 0 0;font-size:44px;line-height:.9}.result-actions{flex-direction:column;gap:10px;margin-top:auto;display:flex}.play.inverse{background:var(--bg);color:var(--ink)}.play.inverse.ghost{color:var(--bg);border:3px solid var(--bg);background:0 0;padding-block:16px;font-size:18px}.result .text-btn{color:var(--bg);align-self:flex-start}.settings{background:var(--bg)}.settings>.wrap{flex-direction:column;gap:22px;padding-block:24px 32px;display:flex}.settings h2{font-family:var(--f-display);text-transform:uppercase;letter-spacing:-.03em;margin:0;font-size:44px;font-weight:400;line-height:.9}.set-row{flex-direction:column;gap:8px;display:flex}.set-row>span{font-family:var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-size:11px;font-weight:700}.seg{border:2px solid var(--ink);display:flex}.seg button{flex:1;min-height:46px;padding:10px 8px;font-size:15px;font-weight:600}.seg button+button{border-left:2px solid var(--ink)}.seg button[aria-pressed=true]{background:var(--ink);color:var(--bg)}.version{color:var(--muted);margin:0;font-size:11px}@media (prefers-reduced-motion:reduce){*,:before,:after{transition:none!important;animation:none!important}}