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22%,var(--card))}.cd-label{position:absolute;top:2px;left:4px;font-size:clamp(9px,2.2vw,12px);font-weight:900;color:var(--muted)}.futoshiki{display:grid;max-width:420px;margin:0 auto;gap:2px}.fs-cell{aspect-ratio:1;font:inherit;font-weight:800;font-size:clamp(15px,4vw,22px);border:2px solid var(--line);border-radius:8px;background:var(--card);color:var(--accent);cursor:pointer;padding:0}.fs-cell.given{color:var(--ink);background:color-mix(in srgb,var(--ink) 5%,var(--card));cursor:default}.fs-cell.sel{background:color-mix(in srgb,var(--accent) 22%,var(--card))}.fs-sign{display:flex;align-items:center;justify-content:center;font-weight:900;color:var(--muted);font-size:clamp(12px,3vw,18px);min-width:14px;min-height:14px}.fifteen{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;max-width:380px;margin:0 auto}.ft-tile{aspect-ratio:1;font:inherit;font-weight:900;font-size:clamp(18px,5vw,28px);border:none;border-radius:12px;background:color-mix(in srgb,var(--accent) 18%,var(--card));color:var(--ink);cursor:pointer;transition:transform .08s,background .2s}.ft-tile:active{transform:scale(.94)}.ft-tile.placed{background:color-mix(in srgb,var(--accent) 45%,var(--card))}.ft-tile.blank{background:transparent;border:2px dashed var(--line);cursor:default}.hanoi{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;max-width:520px;margin:0 auto}.hanoi-peg{position:relative;height:170px;border:2px solid var(--line);border-radius:12px;background:var(--bg);cursor:pointer;overflow:hidden}.hanoi-peg.sel{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 8%,var(--bg))}.hanoi-rod{position:absolute;left:50%;bottom:8px;width:6px;height:130px;transform:translate(-50%);background:var(--line);border-radius:3px}.hanoi-disk{position:absolute;left:50%;transform:translate(-50%);height:18px;border-radius:9px;transition:bottom .15s}.mathx{display:grid;grid-template-columns:repeat(5,56px);gap:6px;justify-content:center}.mx-cell{width:56px;height:56px;text-align:center;font:inherit;font-weight:900;font-size:22px;border:2px solid var(--accent);border-radius:10px}.mx-fix{display:flex;align-items:center;justify-content:center;font-weight:900;font-size:20px;height:56px;background:color-mix(in srgb,var(--ink) 5%,var(--card));border-radius:10px}.mx-fix.dim{background:transparent;color:var(--muted)}@media (max-width: 480px){.mathx{grid-template-columns:repeat(5,48px)}.mx-cell,.mx-fix{width:48px;height:48px;font-size:18px}}.popular-label{font-size:12.5px;font-weight:900;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);align-self:center}.share-bar{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:18px 0 4px}.share-label{font-weight:800;font-size:.85rem;color:var(--muted)}.share-pill{display:inline-flex;align-items:center;gap:6px;padding:7px 13px;border-radius:999px;border:2px solid var(--line);background:var(--card);font:inherit;font-size:.85rem;font-weight:800;color:var(--ink);text-decoration:none;cursor:pointer;transition:transform .15s ease,border-color .15s ease,box-shadow .15s ease}.share-pill:hover{transform:translateY(-2px);border-color:var(--accent);box-shadow:0 4px 14px #00000014}.walkthrough{margin:20px 0 6px;padding:22px;border-radius:var(--r-lg, 20px);background:var(--card);border:2px solid var(--line);position:relative;overflow:hidden}.walkthrough:before{content:"";position:absolute;inset:0 0 auto 0;height:5px;background:linear-gradient(90deg,var(--accent),transparent)}.wt-poster{display:flex;align-items:center;gap:18px;flex-wrap:wrap}.wt-poster-emoji{font-size:2.6rem;width:74px;height:74px;flex:0 0 auto;display:grid;place-items:center;border-radius:20px;background:color-mix(in srgb,var(--accent) 12%,transparent);animation:wtBob 2.6s ease-in-out infinite}@keyframes wtBob{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}.wt-poster h2{margin:0 0 4px;font-size:1.15rem}.wt-poster p{margin:0;color:var(--muted);font-size:.95rem;max-width:52ch}.wt-play{margin-left:auto;flex:0 0 auto;padding:13px 26px;border-radius:999px;border:none;cursor:pointer;font:inherit;font-weight:900;font-size:1rem;color:#fff;background:var(--accent);box-shadow:0 6px 18px color-mix(in srgb,var(--accent) 45%,transparent);transition:transform .15s ease,box-shadow .15s ease}.wt-play:hover{transform:scale(1.05);box-shadow:0 8px 24px color-mix(in srgb,var(--accent) 55%,transparent)}.wt-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}.wt-dots{display:flex;gap:7px}.wt-dot{width:11px;height:11px;border-radius:999px;border:none;padding:0;background:var(--line);cursor:pointer;transition:all .25s ease}.wt-dot.done{background:color-mix(in srgb,var(--accent) 45%,transparent)}.wt-dot.on{background:var(--accent);width:26px}.wt-count{font-size:.8rem;font-weight:800;color:var(--muted)}.wt-progress{height:4px;border-radius:999px;margin-bottom:12px;background:linear-gradient(90deg,var(--accent),color-mix(in srgb,var(--accent) 40%,transparent));transform-origin:left;animation:wtFill linear forwards}@keyframes wtFill{0%{transform:scaleX(0)}to{transform:scaleX(1)}}.wt-card{display:flex;gap:16px;align-items:flex-start;animation:wtIn .45s cubic-bezier(.2,.9,.3,1.2)}@keyframes wtIn{0%{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:none}}.wt-emoji{font-size:2rem;width:60px;height:60px;flex:0 0 auto;display:grid;place-items:center;border-radius:16px;background:color-mix(in srgb,var(--accent) 12%,transparent)}.wt-body h3{margin:2px 0 4px;font-size:1.02rem}.wt-big{font-size:clamp(1.7rem,5vw,2.3rem);font-weight:900;color:var(--accent);letter-spacing:-.5px;line-height:1.1;margin:2px 0 6px;font-variant-numeric:tabular-nums}.wt-body p{margin:0;color:var(--muted);font-size:.95rem;line-height:1.6;max-width:68ch}.wt-controls{display:flex;gap:8px;margin-top:16px}.wt-controls button:disabled{opacity:.4;cursor:default}@media (max-width: 640px){.walkthrough{padding:16px}.wt-poster{gap:12px}.wt-play{margin-left:0;width:100%}.wt-card{gap:12px}.wt-emoji{width:48px;height:48px;font-size:1.6rem}}@media (prefers-reduced-motion: reduce){.wt-poster-emoji,.wt-card{animation:none}}