:root{--bg:#f6f5f1;--surface:#fff;--ink:#1d1d1f;--muted:#6b6b70;--line:#d9d7d0;--line-strong:#2b2b2e;--accent:#3a5bd9;--accent-soft:#e6ebfb;--given:#1d1d1f;--deduced:#3a5bd9;--guess:#b5651d;--unit:#f1efe7;--focus:#fff1c2;--place:#2e8b57;--place-soft:#dcf2e4;--elim:#d64545;--elim-soft:#fbe1e1;--pattern-soft:#dbe4ff;--warn:#8a5a00;--warn-soft:#fff4d6;--on-accent:#fff;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--bg:#141416;--surface:#1d1d20;--ink:#ececef;--muted:#9a9aa2;--line:#34343a;--line-strong:#b9b9c0;--accent:#7d97ff;--accent-soft:#232b48;--given:#ececef;--deduced:#8fa6ff;--guess:#f0a35e;--unit:#24242a;--focus:#463c17;--place:#5fd38f;--place-soft:#18392a;--elim:#ff7676;--elim-soft:#4a1f22;--pattern-soft:#26315a;--warn:#f3c463;--warn-soft:#3a2f12;--on-accent:#0d1020}}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);margin:0}button,input,select{font:inherit;color:inherit}.app{max-width:1120px;margin:0 auto;padding:24px 16px 48px}.top h1{letter-spacing:-.01em;margin:0;font-size:1.6rem}.top p{color:var(--muted);margin:4px 0 20px}main{grid-template-columns:minmax(0,560px) minmax(0,1fr);align-items:start;gap:24px;display:grid}@media (width<=860px){main{grid-template-columns:1fr}}.board{aspect-ratio:1;background:var(--surface);border:2px solid var(--line-strong);-webkit-user-select:none;user-select:none;touch-action:manipulation;border-radius:6px;grid-template-columns:repeat(9,1fr);width:100%;display:grid;overflow:hidden}.cell{border-right:1px solid var(--line);border-bottom:1px solid var(--line);place-items:center;transition:background-color .12s;display:grid;position:relative;container-type:inline-size}.cell:nth-child(9n){border-right:none}.cell:nth-child(n+73){border-bottom:none}.cell.edge-r{border-right:2px solid var(--line-strong)}.cell.edge-b{border-bottom:2px solid var(--line-strong)}.cell.in-unit{background:var(--unit)}.cell.focus{background:var(--focus)}.cell.place{background:var(--place-soft)}.cell.selected{background:var(--accent-soft);box-shadow:inset 0 0 0 2px var(--accent)}.cell.flagged{box-shadow:inset 0 0 0 2px var(--elim)}.cell.flagged.selected{box-shadow:inset 0 0 0 2px var(--accent)}.digit{font-variant-numeric:tabular-nums;font-size:62cqi;line-height:1}.value.given .digit{color:var(--given);font-weight:650}.value.deduced .digit{color:var(--deduced)}.value.guess .digit{color:var(--guess)}.cell.place .digit{color:var(--place)}.cands{grid-template-columns:repeat(3,1fr);width:100%;height:100%;padding:2px;display:grid}.cands span{color:var(--muted);border-radius:3px;place-items:center;font-size:22cqi;line-height:1;display:grid}.cands .elim{color:var(--elim);background:var(--elim-soft);font-weight:700;text-decoration:line-through}.cands .pattern{color:var(--accent);background:var(--pattern-soft);font-weight:700}.cands .place{color:var(--place);background:var(--place-soft);font-weight:700}.board-wrap{flex-direction:column;gap:16px;min-width:0;display:flex}.pad{grid-template-columns:repeat(10,1fr);gap:6px;display:grid}.pad button{padding:10px 0;font-size:1.15rem}.panel{flex-direction:column;gap:16px;min-width:0;display:flex}.card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px}.card h2{margin:0 0 8px;font-size:1rem}.muted{color:var(--muted);margin:0 0 12px}.small{margin:6px 0 0;font-size:.85rem}.row{align-items:center;gap:8px;display:flex}.row.wrap{flex-wrap:wrap}.paste{margin-top:12px}.paste input{flex:1;min-width:0}.warn{background:var(--warn-soft);color:var(--warn);border-radius:8px;margin:12px 0 0;padding:8px 10px;font-size:.9rem}.error{background:var(--elim-soft);color:var(--elim);border-radius:8px;margin:12px 0 0;padding:8px 10px;font-size:.9rem}button,.button,select,input:not([type=range]){background:var(--surface);border:1px solid var(--line);cursor:pointer;border-radius:8px;padding:8px 12px}input:not([type=range]){cursor:text}button:hover:not(:disabled),.button:hover{border-color:var(--muted)}button:disabled{opacity:.45;cursor:not-allowed}button.primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}button.big{padding:12px;font-size:1.05rem;font-weight:600}button.ghost{background:0 0;border:none}.summary{align-items:center;gap:10px;margin-bottom:4px;display:flex}.badge{background:var(--accent-soft);color:var(--accent);border-radius:999px;padding:3px 10px;font-size:.85rem;font-weight:600}.badge.level-5,.badge.level-6{background:var(--warn-soft);color:var(--warn)}.summary .muted{margin:0}.now{min-height:96px;margin:12px 0}.now p{margin:8px 0 0;line-height:1.45}.transport{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.transport button{min-width:44px}.speed{color:var(--muted);align-items:center;gap:6px;margin-left:auto;font-size:.85rem;display:flex}.scrub{width:100%;accent-color:var(--accent);margin-top:12px}.tag,.chips button{background:var(--accent-soft);color:var(--accent);border:none;border-radius:6px;padding:2px 8px;font-size:.8rem;font-weight:600;display:inline-block}.chips{flex-wrap:wrap;gap:6px;display:flex}.t-elimination{background:var(--unit);color:var(--muted)}.t-guess,.t-backtrack{background:var(--warn-soft);color:var(--warn)}.t-contradiction{background:var(--elim-soft);color:var(--elim)}.t-naked-single,.t-hidden-single{background:var(--place-soft);color:var(--place)}.log-card{padding-bottom:8px}.log{max-height:280px;margin:0;padding:0;font-size:.85rem;list-style:none;position:relative;overflow-y:auto}.log li{cursor:pointer;color:var(--muted);border-radius:6px;padding:6px 8px;line-height:1.35}.log li.past{color:var(--ink);opacity:.75}.log li.current{background:var(--accent-soft);color:var(--ink);opacity:1}.log li b{color:var(--ink);font-weight:600}.dot{vertical-align:middle;border-radius:50%;width:8px;height:8px;margin-right:6px;padding:0;display:inline-block}dialog.scan{border:1px solid var(--line);background:var(--surface);width:min(560px,100vw - 32px);color:var(--ink);border-radius:14px;padding:16px}dialog.scan::backdrop{background:#00000073}dialog.scan header{justify-content:space-between;align-items:center;display:flex}dialog.scan h2{margin:0;font-size:1.1rem}.camera{margin-top:12px}.viewfinder{aspect-ratio:1;background:#000;border-radius:10px;width:min(100%,60vh);margin:0 auto;position:relative;overflow:hidden}.viewfinder video{object-fit:cover;width:100%;height:100%;display:block}.guide{pointer-events:none;border:2px dashed #ffffffd9;border-radius:8px;position:absolute;inset:6%}.hint{color:var(--muted);font-size:.9rem}.crop,.read{touch-action:none;-webkit-user-select:none;user-select:none;border-radius:8px;max-width:100%;max-height:60vh;margin:12px auto 0;display:block}.read{aspect-ratio:1;border:1px solid var(--line);width:min(100%,60vh)}.crop-lines{fill:none;stroke:#7d97ff;stroke-width:1.5px}.crop-handle{fill:#7d97ff59;stroke:#fff;stroke-width:2px;pointer-events:none}.read.editable{cursor:pointer}.read-badge{fill:#2e8b57}.unsure .read-badge{fill:#d9822b}.clash .read-badge{fill:#d64545}.read-outline{fill:#d9822b1f;stroke:#d9822b;stroke-width:2px}.clash .read-outline{fill:#d645451f;stroke:#d64545}.selected .read-outline{fill:#3a5bd926;stroke:#3a5bd9;stroke-width:3px}.done .pad{margin-top:12px}.read-digit{fill:#fff;text-anchor:middle;dominant-baseline:central;font:700 13px system-ui,sans-serif}.working{text-align:center;color:var(--muted);padding:32px 0}.pick p{color:var(--muted)}.camera .row,.done .row,.pick .row{justify-content:flex-end}.review{text-align:center;flex-direction:column;align-items:center;display:flex}.review .progress{color:var(--muted);margin:12px 0 8px;font-size:.85rem}.zoom{aspect-ratio:1;border:1px solid var(--line);background:#fff;border-radius:10px;width:min(240px,60vw)}.zoom-frame{fill:none;stroke:#3a5bd9;stroke-width:3px}.review .question{margin:14px 0 10px;font-size:1.15rem}.review .question b{font-size:1.4rem}.yesno{grid-template-columns:1fr 1fr;gap:10px;width:min(320px,100%);display:grid}.yesno button{padding:14px 0;font-size:1.1rem;font-weight:600}.pick-digit{grid-template-columns:repeat(5,1fr);width:min(360px,100%)}.pick-digit button{padding:12px 0}.pick-digit .empty{font-size:.9rem}.review .row{margin-top:12px}