:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:system-ui,Segoe UI,Roboto,sans-serif;line-height:1.5}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}body{margin:0}#root{justify-content:center;align-items:center;min-height:100svh;display:flex}h1{text-align:center;margin:0;font-size:3rem}.puzzle-grid{touch-action:none;-webkit-user-select:none;user-select:none;background:radial-gradient(130% 110% at 30% 20%,#fff3,#fff0 55%),repeating-linear-gradient(0deg,#4a2d120d 0 1px,#4a2d1200 1px 6px,#4a2d1208 6px 7px,#4a2d1200 7px 19px),radial-gradient(120% 120%,#0000 55%,#4a2d1238 100%),linear-gradient(#ddb27c,#cf9a58);border:1px solid #8a5a2e;border-radius:8px;box-shadow:inset 0 1px 2px #ffffff47,inset 0 -2px 4px #4a2d1226,0 2px 8px #0000002e}.puzzle-grid__shape{pointer-events:all;transition:fill .1s,stroke .1s}.puzzle-grid__line{stroke:#3a2410;stroke-width:1.5px}.puzzle-grid__given-halo{fill:#0000;stroke:none;pointer-events:none}.puzzle-grid__square--given .puzzle-grid__given-halo{fill:#906f37a4}.puzzle-grid__violation-halo{fill:#0000;stroke:none;pointer-events:none;opacity:0;transition:opacity .12s}.puzzle-grid__square--violation .puzzle-grid__violation-halo{opacity:1;fill:#ff1e1e8c;filter:url(#pg-red-glow)}.puzzle-grid__edge .puzzle-grid__shape{pointer-events:none}.puzzle-grid__hit-area{pointer-events:stroke}.puzzle-grid__cross{pointer-events:none}.puzzle-grid__square .puzzle-grid__shape{fill:#0000;stroke:none}.puzzle-grid__square .puzzle-grid__hit-area{fill:#0000;stroke:none;pointer-events:all}.puzzle-grid__square--activated .puzzle-grid__shape{fill:url(#pg-black-stone);stroke:#1a1a1a;stroke-width:1px}.puzzle-grid__square--inactivated .puzzle-grid__shape{fill:url(#pg-white-stone);stroke:#c9c9c9;stroke-width:1px}.puzzle-grid__square--x .puzzle-grid__shape{fill:#fff;stroke:#c00000}.puzzle-grid__square--fixed .puzzle-grid__shape{fill:url(#pg-white-stone);stroke:#d4a017;stroke-width:2.5px}.puzzle-grid__square--inferred .puzzle-grid__shape{opacity:.4}.puzzle-grid__edge .puzzle-grid__shape{stroke:#0000;stroke-width:2px}.puzzle-grid__edge--activated .puzzle-grid__shape{stroke:#333}.puzzle-grid__edge--inactivated .puzzle-grid__shape{stroke:#c9c9c9}.puzzle-grid__edge--x .puzzle-grid__shape{stroke:#0000}.puzzle-grid__edge--fixed .puzzle-grid__shape{stroke:#d4a017;stroke-width:2.5px}.puzzle-grid__vertex .puzzle-grid__shape{fill:#e4e4e4;stroke:#9a9a9a;stroke-width:1.5px}.puzzle-grid__vertex--activated .puzzle-grid__shape{fill:#1a1a1a;stroke:#1a1a1a}.puzzle-grid__vertex--inactivated .puzzle-grid__shape{fill:#fff;stroke:#9a9a9a}.puzzle-grid__vertex--x .puzzle-grid__shape{fill:#fff;stroke:#c00000}.puzzle-grid__vertex--fixed .puzzle-grid__shape{fill:#fff6d6;stroke:#d4a017;stroke-width:2px}.puzzle-grid__cross-line{stroke:#c00000;stroke-width:2px;stroke-linecap:round}.app{margin:0 auto;padding:24px}.app__title{letter-spacing:.02em;background:linear-gradient(120deg,#f7e3b0 0%,#e6b45f 45%,#fff 90%);color:#0000;filter:drop-shadow(0 3px 10px #0000008c);-webkit-background-clip:text;background-clip:text;align-items:center;gap:12px;margin:4px 0 16px;font-family:Georgia,Times New Roman,serif;font-size:42px;font-weight:700;display:flex}.app__title-icon{filter:drop-shadow(0 2px 6px #00000080);flex:none;animation:40s linear infinite app-spin;display:inline-flex}@keyframes app-spin{to{transform:rotate(360deg)}}.app__layout{flex-wrap:wrap;justify-content:center;align-items:flex-start;gap:32px;margin-top:24px;display:flex}.app__grid{padding:8px}.app__panel{font-family:var(--sans,system-ui, "Segoe UI", Roboto, sans-serif);min-width:240px;max-width:260px;font-size:14px;line-height:1.5}.app__heading{text-transform:uppercase;letter-spacing:.06em;color:#666;margin:20px 0 8px;font-size:14px}.app__text{margin:6px 0}.app__hint{font:inherit;color:#e6c07a;cursor:pointer;text-underline-offset:3px;background:0 0;border:none;margin:2px 0 4px;padding:2px 0;font-size:13px;text-decoration:underline}.app__hint:hover{color:#f5d9a0}.app__controls{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px;display:flex}.app__undo{font:inherit;cursor:pointer;background:#3b3131;border:1px solid #bbb;border-radius:6px;padding:6px 12px;font-size:14px}.app__undo:disabled{opacity:.5;cursor:default}.app__undo:not(:disabled):hover{background:#f0f0f0}.app__sizelabel{align-items:center;gap:6px;font-size:14px;display:flex}.app__size{font:inherit;background:#6b6868;border:1px solid #bbb;border-radius:6px;padding:5px 8px;font-size:14px}.app__code{background:#6e6666;border-radius:4px;padding:1px 4px;font-family:ui-monospace,Consolas,monospace;font-size:12px}.app__key{background:#5f5858;border:1px solid #ccc;border-bottom-width:2px;border-radius:4px;padding:0 4px;font-family:ui-monospace,Consolas,monospace;font-size:12px}.app__legend{gap:6px;margin:0;padding:0;list-style:none;display:grid}.app__legend-item{align-items:center;gap:10px;display:flex}.app__swatch{border:1px solid #bbb;border-radius:4px;flex:none;width:18px;height:18px}.app__swatch--untouched{background:#fff}.app__swatch--activated{background:#1a1a1a}.app__swatch--inactivated{background:#eaeaea}.app__swatch--inferred{background:#1a1a1a66;border-color:#9a9a9a}.app__swatch--x{background-color:#fff;background-image:linear-gradient(45deg,#0000 44%,#c00000 44% 56%,#0000 56%),linear-gradient(-45deg,#0000 44%,#c00000 44% 56%,#0000 56%);background-position:0 0;background-repeat:repeat;background-size:auto;background-attachment:scroll;background-origin:padding-box;background-clip:border-box;border-color:#c00000}.app__swatch--fixed{background:#fff6d6;border-color:#d4a017}.app__swatch--given{background:#d5d5d5;border-color:#a9a9a9;position:relative}.app__swatch--given:after{content:"";background:#1a1a1a;border-radius:50%;position:absolute;inset:4px}.app__status{color:#333;background:#fafafa;border:1px solid #eee;border-radius:4px;min-height:18px;padding:6px 8px;font-family:ui-monospace,Consolas,monospace;font-size:12px}.app__modes{gap:10px;margin-bottom:20px;display:flex}.app__mode{font:inherit;cursor:pointer;background:#3b3131;border:1px solid #837979;border-radius:6px;padding:6px 16px;font-size:14px}.app__mode:hover{background:#534f4f}.app__mode--active{background:#6e6767;border-color:#888;font-weight:600}.confetti{pointer-events:none;z-index:9999;position:fixed;inset:0}.app__datecontrol{margin-top:14px}.app__datelabel{color:#ccc;margin-bottom:4px;font-weight:600;display:block}.app__sizes{grid-template-columns:repeat(3,1fr);gap:6px;margin-bottom:12px;display:grid}.app__sizebtn{font:inherit;color:#fff;cursor:pointer;background:#3b3131;border:1px solid #bbb;border-radius:6px;padding:6px 4px;font-size:13px}.app__sizebtn:hover{background:#584949}.app__sizebtn:disabled{opacity:.5;cursor:default}.app__sizebtn--active{background:#6e6767;border-color:#fff;font-weight:600}.app__sizebtn--completed{color:#14532d;background:#b9e4b9;border-color:#8bc78b}.app__sizebtn--completed:hover{background:#7cd17c}body.cursor-busy,body.cursor-busy *{cursor:progress!important}.month-picker{-webkit-user-select:none;user-select:none;padding-bottom:6px;position:relative}.month-picker__trigger{font:inherit;color:#fff;cursor:pointer;background:#3b3131;border:1px solid #bbb;border-radius:6px;align-items:center;gap:6px;padding:5px 8px;font-size:13px;display:inline-flex}.month-picker__trigger:disabled{opacity:.5;cursor:default}.month-picker__value{font-variant-numeric:tabular-nums}.month-picker__dropdown{z-index:20;background:#2b1f1f;border:1px solid #444;border-radius:8px;width:214px;padding:10px;position:absolute;top:calc(100% + 6px);left:0;box-shadow:0 8px 24px #00000080}.month-picker__header{justify-content:space-between;align-items:center;gap:6px;margin-bottom:6px;display:flex}.month-picker__nav{font:inherit;color:#fff;cursor:pointer;background:#3b3131;border:1px solid #bbb;border-radius:6px;width:28px;height:28px;font-size:16px;line-height:1}.month-picker__nav:disabled{opacity:.5;cursor:default}.month-picker__label{font-weight:600}.month-picker__grid{grid-template-columns:repeat(7,1fr);gap:2px;display:grid}.month-picker__weekday{text-align:center;color:#888;font-size:11px}.month-picker__cell{font:inherit;color:#fff;cursor:pointer;background:0 0;border:1px solid #0000;border-radius:6px;padding:4px 0;font-size:13px}.month-picker__cell:hover:not(:disabled){background:#3b3131}.month-picker__cell:disabled{opacity:.35;cursor:default}.month-picker__cell--empty{pointer-events:none}.month-picker__cell--today{border-color:#bbb}.month-picker__cell--selected{background:#534f4f;border-color:#fff;font-weight:600}.month-picker__cell--completed{color:#14532d;background:#b9e4b9}.hint-modal{z-index:10000;background:#0000008c;justify-content:center;align-items:center;padding:24px;animation:.15s hint-modal-fade;display:flex;position:fixed;inset:0}.hint-modal__dialog{font-family:var(--sans,system-ui, "Segoe UI", Roboto, sans-serif);color:#222;background:#f4efe6;border:1px solid #b9a679;border-radius:10px;width:100%;max-width:420px;max-height:80vh;padding:20px 22px;overflow:auto;box-shadow:0 8px 30px #00000059,inset 0 1px #fff9}.hint-modal__header{justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;display:flex}.hint-modal__title{color:#4a3a1e;margin:0;font-size:18px;font-weight:700}.hint-modal__close{font:inherit;color:#6b5a36;cursor:pointer;background:0 0;border:none;border-radius:6px;width:34px;height:34px;font-size:22px;line-height:1}.hint-modal__close:hover{background:#00000014}.hint-modal__list{gap:14px;margin:0;padding:0;list-style:none;display:grid}.hint-modal__rule-title{color:#4a3a1e;margin:0 0 4px;font-size:15px;font-weight:700}.hint-modal__rule-body{color:#333;margin:0;font-size:14px;line-height:1.5}@keyframes hint-modal-fade{0%{opacity:0}to{opacity:1}}