:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--color-bg:#f6f4ef;--color-surface:#fffdf9;--color-surface-2:#efece5;--color-ink:#23262b;--color-ink-muted:#666b73;--color-line:#ddd8cd;--color-accent:#2f6f6a;--color-accent-ink:#fff;--color-accent-soft:#d8e8e5;--color-error:#b4382e;--color-error-soft:#f6dcd8;--color-focus:#2f6f6a;--sudoku-cell:var(--color-surface);--sudoku-peer:#f0ede5;--sudoku-same:#cfe1de;--sudoku-selected:#b9d6d1;--sudoku-grid-line:#d8d3c7;--sudoku-grid-strong:#3d4046;--sudoku-given:var(--color-ink);--sudoku-entry:var(--color-accent);--sudoku-note:#7a7f87;--font-sans:ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-size-sm:.875rem;--font-size-md:1rem;--font-size-lg:1.25rem;--font-size-xl:1.75rem;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.5rem;--space-6:2rem;--radius-sm:8px;--radius-md:12px;--radius-lg:18px;--touch-min:44px;--duration-fast:.12s;--duration-base:.2s;--ease:cubic-bezier(.2, 0, 0, 1);--safe-top:env(safe-area-inset-top,0px);--safe-right:env(safe-area-inset-right,0px);--safe-bottom:env(safe-area-inset-bottom,0px);--safe-left:env(safe-area-inset-left,0px);--page-gutter:max(var(--space-4), var(--safe-left))}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--color-bg:#16181c;--color-surface:#1f2227;--color-surface-2:#292d33;--color-ink:#e9e7e2;--color-ink-muted:#9da2aa;--color-line:#363a41;--color-accent:#6fc0b8;--color-accent-ink:#0f1a19;--color-accent-soft:#24403d;--color-error:#ef8478;--color-error-soft:#4a2622;--color-focus:#6fc0b8;--sudoku-cell:var(--color-surface);--sudoku-peer:#272b31;--sudoku-same:#2f4d4a;--sudoku-selected:#3a6560;--sudoku-grid-line:#3a3e46;--sudoku-grid-strong:#a9aeb6;--sudoku-note:#969ba3}}:root[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--color-bg:#16181c;--color-surface:#1f2227;--color-surface-2:#292d33;--color-ink:#e9e7e2;--color-ink-muted:#9da2aa;--color-line:#363a41;--color-accent:#6fc0b8;--color-accent-ink:#0f1a19;--color-accent-soft:#24403d;--color-error:#ef8478;--color-error-soft:#4a2622;--color-focus:#6fc0b8;--sudoku-cell:var(--color-surface);--sudoku-peer:#272b31;--sudoku-same:#2f4d4a;--sudoku-selected:#3a6560;--sudoku-grid-line:#3a3e46;--sudoku-grid-strong:#a9aeb6;--sudoku-note:#969ba3}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent;height:100%}body{background:var(--color-bg);min-height:100%;color:var(--color-ink);font-family:var(--font-sans);font-size:var(--font-size-md);-webkit-font-smoothing:antialiased;overscroll-behavior:none;margin:0;line-height:1.5}#root{flex-direction:column;min-height:100dvh;display:flex}h1,h2,h3{letter-spacing:-.01em;margin:0;line-height:1.2}h1{font-size:var(--font-size-xl);font-weight:650}h2{font-size:var(--font-size-lg);font-weight:600}p{margin:0}a{color:inherit}:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}button{font:inherit;color:inherit;cursor:pointer;touch-action:manipulation;-webkit-user-select:none;user-select:none}button:disabled{cursor:default}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.page{width:100%;max-width:40rem;padding:calc(var(--safe-top) + var(--space-4)) var(--page-gutter) calc(var(--safe-bottom) + var(--space-6));gap:var(--space-5);flex-direction:column;flex:1;margin:0 auto;display:flex}.page-header{align-items:center;gap:var(--space-3);min-height:var(--touch-min);display:flex}.page-header h1{flex:1}.muted{color:var(--color-ink-muted)}.btn{justify-content:center;align-items:center;gap:var(--space-2);min-height:var(--touch-min);padding:0 var(--space-4);border:1px solid var(--color-line);border-radius:var(--radius-md);background:var(--color-surface);transition:background var(--duration-fast) var(--ease), transform var(--duration-fast) var(--ease);font-weight:550;text-decoration:none;display:inline-flex}.btn:hover{background:var(--color-surface-2)}.btn:active{transform:scale(.98)}.btn-primary{background:var(--color-accent);border-color:var(--color-accent);color:var(--color-accent-ink)}.btn-primary:hover{background:var(--color-accent);filter:brightness(1.08)}.btn-quiet{color:var(--color-ink-muted);background:0 0;border-color:#0000}.btn-icon{width:var(--touch-min);background:0 0;border-color:#0000;padding:0}.btn:disabled{opacity:.45}.icon{flex:none;width:1.4rem;height:1.4rem}.list{border:1px solid var(--color-line);border-radius:var(--radius-lg);background:var(--color-surface);flex-direction:column;display:flex;overflow:hidden}.list-item{align-items:center;gap:var(--space-3);min-height:3.75rem;padding:var(--space-3) var(--space-4);border:0;border-top:1px solid var(--color-line);text-align:left;width:100%;transition:background var(--duration-fast) var(--ease);background:0 0;text-decoration:none;display:flex}.list-item:first-child{border-top:0}a.list-item:hover,button.list-item:hover:not(:disabled){background:var(--color-surface-2)}.list-item[aria-disabled=true],.list-item:disabled{opacity:.55}.list-item-body{flex-direction:column;flex:1;min-width:0;display:flex}.list-item-title{font-weight:600}.list-item-sub{font-size:var(--font-size-sm);color:var(--color-ink-muted)}.section-title{font-size:var(--font-size-sm);color:var(--color-ink-muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:var(--space-2);font-weight:600}.chip{font-size:var(--font-size-sm);background:var(--color-accent-soft);color:var(--color-accent);white-space:nowrap;border-radius:999px;padding:.1rem .6rem;font-weight:600}.switch-row{justify-content:space-between;align-items:center;gap:var(--space-4);min-height:3.25rem;padding:var(--space-2) var(--space-4);border-top:1px solid var(--color-line);display:flex}.switch-row:first-child{border-top:0}.switch{appearance:none;background:var(--color-line);cursor:pointer;width:3rem;height:1.75rem;transition:background var(--duration-base) var(--ease);border:0;border-radius:999px;flex:none;position:relative}.switch:after{content:"";width:1.35rem;height:1.35rem;transition:transform var(--duration-base) var(--ease);background:#fff;border-radius:50%;position:absolute;top:.2rem;left:.2rem}.switch:checked{background:var(--color-accent)}.switch:checked:after{transform:translate(1.25rem)}.segmented{border-radius:var(--radius-md);background:var(--color-surface-2);gap:3px;padding:3px;display:flex}.segmented button{border-radius:var(--radius-sm);background:0 0;border:0;flex:1;min-height:2.5rem}.segmented button[aria-pressed=true]{background:var(--color-surface);font-weight:600;box-shadow:0 1px 2px #0000001f}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}