:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;--bg:#f6f3ee;--surface:#fff;--text:#1f2328;--muted:#5d636b;--line:#d9d4cb;--accent:#2f6f8f;--accent-text:#fff;--good:#2e7d3e;--good-bg:#e3f3e6;--bad:#c0392b;--block:#7d838c;--block-text:#fff;--metal:#6b5b45;--focus:#e09a00;--radius:12px;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--bg:#15181c;--surface:#1f2329;--text:#e8e6e3;--muted:#a0a6ad;--line:#353b43;--accent:#5aa9cf;--accent-text:#0d1114;--good:#5cc275;--good-bg:#1f3526;--bad:#ff6b5b;--block:#6c727b;--metal:#c2ab88}}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0;line-height:1.45}button{font:inherit}:focus-visible{outline:3px solid var(--focus);outline-offset:2px}#app{flex-direction:column;max-width:480px;min-height:100vh;margin:0 auto;padding:0 16px 24px;display:flex}main{flex:1}.top{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;padding:12px 0;display:flex}.brand{color:var(--text);font-size:1.25rem;font-weight:800;text-decoration:none}.actions{gap:6px;display:flex}.icon{border:1px solid var(--line);background:var(--surface);width:40px;height:40px;color:var(--text);cursor:pointer;border-radius:50%;place-items:center;font-weight:700;text-decoration:none;display:inline-grid}.notice:not(:empty){border:1px solid var(--accent);border-radius:var(--radius);background:var(--surface);margin-top:12px;padding:10px 12px;font-size:.95rem}.notice .link{color:var(--accent);cursor:pointer;background:0 0;border:0;padding:0;font-weight:700;text-decoration:underline}.foot{color:var(--muted);text-align:center;padding-top:24px;font-size:.8rem}.meta{justify-content:space-between;align-items:baseline;gap:8px;margin-top:16px;display:flex}.meta h1{margin:0;font-size:1.15rem}.meta .date{color:var(--muted);margin-left:4px;font-weight:500}.grade{border:1px solid var(--line);color:var(--muted);text-transform:capitalize;border-radius:999px;padding:2px 10px;font-size:.8rem}.rule{color:var(--muted);margin:6px 0 12px;font-size:.95rem}.scales{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:0;padding:0;list-style:none;display:grid}.scales li{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:4px}.scale{width:100%;height:auto;display:block}.scale .stand,.scale .beam,.scale .hanger{fill:none;stroke:var(--metal);stroke-linecap:round}.scale .stand{stroke-width:4px}.scale .beam{stroke-width:5px}.scale .hanger{stroke-width:1.5px}.scale .pivot,.scale .bowl{fill:var(--metal)}.scale .block rect{fill:var(--block)}.scale .block text{fill:var(--block-text);font-size:12px;font-weight:700}.scale .badge circle{fill:var(--good)}.scale .badge text{fill:#fff;font-size:10px;font-weight:700}.status{color:var(--muted);font-variant-numeric:tabular-nums;justify-content:space-between;margin:14px 2px 8px;font-size:.9rem;display:flex}.tiles,.nums{grid-template-columns:repeat(var(--n), minmax(0, 1fr));gap:6px;display:grid}.tile{border:2px solid var(--line);border-radius:var(--radius);background:var(--surface);min-height:76px;color:var(--text);cursor:pointer;flex-direction:column;align-items:center;gap:2px;padding:8px 2px 6px;display:flex}.tile .emoji{font-size:1.6rem;line-height:1}.tile .value{color:var(--muted);font-size:1.05rem;font-weight:800}.tile .marks{color:var(--muted);flex-wrap:wrap;justify-content:center;gap:2px;font-size:.65rem;display:flex}.tile .marks .wrong{color:var(--bad)}.tile.selected{border-color:var(--accent);box-shadow:inset 0 0 0 2px var(--accent)}.tile.locked{border-color:var(--good);background:var(--good-bg);cursor:default}.tile.locked .value{color:var(--good)}.tile.shake{border-color:var(--bad);animation:.35s shake}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}@media (prefers-reduced-motion:reduce){.tile.shake{animation:none}}.pad{margin-top:12px}.pad .num{border:1px solid var(--line);background:var(--surface);height:48px;color:var(--text);cursor:pointer;border-radius:10px;font-size:1.15rem;font-weight:800}.pad .num:disabled{opacity:.35;cursor:default}.pad .num.wrong,.pad .num.noted{text-decoration:line-through}.pad .num.wrong{color:var(--bad)}.notes-toggle{border:1px dashed var(--line);width:100%;height:40px;color:var(--muted);cursor:pointer;background:0 0;border-radius:10px;margin-top:8px}.notes-toggle[aria-pressed=true]{border-style:solid;border-color:var(--accent);color:var(--accent);font-weight:700}.hint{color:var(--muted);text-align:center;margin:8px 0 0;font-size:.85rem}.finish{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);text-align:center;margin-top:16px;padding:16px}.finish h2{margin:0 0 6px}.squares{letter-spacing:2px;margin:6px 0;font-size:1.6rem}.button{background:var(--accent);color:var(--accent-text);cursor:pointer;border:0;border-radius:999px;padding:12px 22px;font-weight:700;text-decoration:none;display:inline-block}.share-feedback{min-height:1.45em;margin:8px 0 0}.share-fallback{width:100%;font:inherit;margin-top:8px}.next{color:var(--muted);font-variant-numeric:tabular-nums}.finish a,.archive a,.message a:not(.button){color:var(--accent)}.backdrop{z-index:10;background:#00000073;place-items:center;padding:16px;display:grid;position:fixed;inset:0}.modal{background:var(--surface);width:100%;max-width:440px;max-height:calc(100vh - 32px);color:var(--text);border-radius:16px;padding:20px;position:relative;overflow:auto}.modal h2{margin-top:0;padding-right:32px}.close{width:36px;height:36px;color:var(--text);cursor:pointer;background:0 0;border:0;border-radius:50%;font-size:1.5rem;position:absolute;top:10px;right:10px}.example{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.caption{color:var(--muted);font-size:.9rem}.stats{grid-template-columns:repeat(auto-fit,minmax(80px,1fr));gap:12px;margin:0;display:grid}.stats div{text-align:center;flex-direction:column-reverse;align-items:center;display:flex}.stats dd{margin:0;font-size:1.8rem;font-weight:800}.stats dt{color:var(--muted);font-size:.8rem}.archive h1,.message h1{margin:16px 0 8px;font-size:1.3rem}.archive-list{margin:0;padding:0;list-style:none}.archive-list a{border-bottom:1px solid var(--line);color:var(--text);grid-template-columns:3.5em 1fr auto;align-items:center;gap:8px;padding:12px 4px;text-decoration:none;display:grid}.archive-list .date{color:var(--muted)}.archive-list .status{font-size:.9rem}.message{text-align:center;padding:32px 0}.loading{color:var(--muted);text-align:center;padding:48px 0}