:root{--plate: #eceee9;--graphite: #21201c;--ochre: #c9760f;--verdigris: #0f766e;--pencil: #c2c0b7;--muted: #5e5c54;--p1: var(--ochre);--p2: var(--verdigris);--p1-text: #9a5a0a;--p2-text: var(--verdigris);--rule: #d7d6cd;--font-display: "Space Grotesk", system-ui, sans-serif;--font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;color-scheme:light}*,*:before,*:after{box-sizing:border-box}body{margin:0;background:var(--plate);color:var(--graphite);font-family:var(--font-display);-webkit-font-smoothing:antialiased}.app{min-height:100dvh;max-width:560px;margin:0 auto;padding:2rem 1.25rem 3rem;display:flex;flex-direction:column;align-items:center;gap:1.1rem}.plate-header{width:100%;display:flex;align-items:baseline;justify-content:space-between;gap:1rem}.title{margin:0;font-family:var(--font-display);font-weight:500;font-size:clamp(2.5rem,9vw,3rem);letter-spacing:.06em}.rule{width:100%;height:0;margin:.9rem 0;border:0;border-top:1px solid var(--rule)}.board{width:100%;max-width:460px;height:auto;touch-action:manipulation}.node{fill:var(--graphite)}.edge-line{transition:stroke .12s ease,opacity .12s ease}.edge.open .edge-hit{stroke:transparent;stroke-width:28;stroke-linecap:round;cursor:pointer}.edge.open:hover .edge-line,.edge.open:focus-within .edge-line{stroke:var(--current);opacity:.5}.edge-hit:focus{outline:none}.losing-fill{animation:wash-in .25s ease both}@keyframes wash-in{0%{opacity:0}to{opacity:.15}}.loss-label{font-family:var(--font-mono);font-size:13px;letter-spacing:.01em;fill:var(--graphite);paint-order:stroke;stroke:var(--plate);stroke-width:4px;stroke-linejoin:round;animation:fade-in .25s ease .2s both}@keyframes fade-in{0%{opacity:0}to{opacity:1}}.readout{width:100%;display:flex;align-items:baseline;justify-content:space-between;gap:.75rem 1.5rem;flex-wrap:wrap}.status{margin:0;min-height:1.5em;font-size:1.125rem}.turn-dot{font-size:.7em;vertical-align:middle;margin-right:.15em}.scoreboard{margin:0;font-family:var(--font-mono);font-size:.9375rem;letter-spacing:.02em;color:var(--graphite)}.scoreboard .sep{color:var(--muted);padding:0 .15em}.ink{font-weight:500}.ink--0{color:var(--p1-text)}.ink--1{color:var(--p2-text)}.control-strip{display:flex;flex-direction:column;align-items:center;gap:.6rem}.controls{display:flex;flex-direction:column;align-items:center;gap:.5rem}.seg{display:flex;flex-wrap:wrap;justify-content:center;gap:4px}.seg button,.new-game{font-family:var(--font-display);font-size:.9rem;color:var(--graphite);background:transparent;border:1px solid var(--pencil);border-radius:7px;padding:.4rem .85rem;cursor:pointer;transition:background .12s ease,border-color .12s ease,color .12s ease}.seg button:hover,.new-game:hover{border-color:var(--graphite)}.seg button.on{color:var(--plate);background:var(--graphite);border-color:var(--graphite);font-weight:500}.new-game{font-weight:500}.hint{margin:0;max-width:30rem;text-align:center;color:var(--muted);font-size:.85rem}.callout{width:100%;display:flex;flex-direction:column;align-items:center;gap:.6rem;text-align:center}.theorem{margin:0;max-width:34rem;font-size:1rem;line-height:1.5}:focus-visible{outline:2px solid var(--ochre);outline-offset:2px}@media(prefers-reduced-motion:reduce){.edge-line,.seg button,.new-game,.losing-fill,.loss-label{transition:none;animation:none}}@media(max-width:380px){.app{padding:1.5rem .9rem 2.5rem;gap:.9rem}.plate-header{flex-direction:column;align-items:flex-start;gap:.15rem}.readout{flex-direction:column;align-items:flex-start;gap:.2rem}}