:root{color-scheme:dark;--bg: #14110e;--surface: #1c1814;--surface-2: #26211b;--ink: #f4ece1;--muted: #a89884;--accent: #e4a03a;--accent-ink: #1a1206;--line: #3a332b;--danger: #d45d5d;--success: #7cba6e;--info: #7ea0c4;--font-display: "Archivo", "Segoe UI", sans-serif;--font-sans: "IBM Plex Sans", "Segoe UI", sans-serif;--font-mono: "IBM Plex Mono", ui-monospace, monospace;--text-xs: .72rem;--text-sm: .86rem;--text-md: 1rem;--text-lg: 1.25rem;--text-xl: 1.65rem;--text-2xl: clamp(2rem, 6vw, 2.75rem);--lh-tight: 1.15;--lh-body: 1.45;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 40px;--radius: 2px;--dur-1: .12s;--dur-2: .22s;--dur-3: .4s;--ease-out: cubic-bezier(.2, .9, .2, 1);--focus: 2px solid var(--accent);font-family:var(--font-sans);background:var(--bg);color:var(--ink)}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}body{background:repeating-linear-gradient(-32deg,transparent 0 10px,rgba(228,160,58,.028) 10px 11px),radial-gradient(900px 420px at 50% -8%,#2a2318 0%,transparent 70%),var(--bg)}button,select,input{font:inherit}button:focus-visible,input:focus-visible,select:focus-visible{outline:var(--focus);outline-offset:2px}.skip-nav{position:absolute;left:-999px;top:8px;background:var(--accent);color:var(--accent-ink);padding:8px 12px;z-index:10}.skip-nav:focus{left:8px}.app{width:min(720px,100%);margin:0 auto;padding:max(20px,env(safe-area-inset-top)) 16px max(56px,env(safe-area-inset-bottom))}.masthead{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--space-4);border-bottom:2px solid var(--line);padding-bottom:var(--space-3)}.kicker{margin:0 0 2px;font-family:var(--font-mono);font-size:var(--text-xs);letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}h1{margin:0;font-family:var(--font-display);font-size:var(--text-2xl);font-weight:800;letter-spacing:-.04em;line-height:var(--lh-tight);text-transform:uppercase}.modes{display:flex;border:2px solid var(--line)}.mode{background:transparent;color:var(--muted);border:0;min-height:44px;padding:0 14px;cursor:pointer;font-family:var(--font-mono);font-size:var(--text-xs);letter-spacing:.08em;text-transform:uppercase}.mode.on{background:var(--accent);color:var(--accent-ink);font-weight:600}.mode:hover:not(:disabled):not(.on){background:var(--surface-2);color:var(--ink)}.rules{margin:var(--space-3) 0 var(--space-4);max-width:46rem;color:var(--muted);font-size:var(--text-sm);line-height:var(--lh-body)}.spec{display:grid;grid-template-columns:1.6fr .7fr .7fr .7fr;gap:0;margin:0 0 var(--space-4);border:2px solid var(--line);background:var(--surface)}.spec-item{padding:10px 12px;border-right:1px solid var(--line)}.spec-item:last-child{border-right:0}.spec dt{font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin:0 0 4px}.spec dd{margin:0;font-family:var(--font-mono);font-size:var(--text-sm);font-weight:600}.spec-time{font-variant-numeric:tabular-nums;font-size:var(--text-lg);color:var(--accent)}.id-btn{display:flex;align-items:baseline;gap:8px;width:100%;padding:0;background:none;border:0;color:inherit;cursor:pointer;text-align:left}.id-value{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.id-action{color:var(--accent);font-size:10px;letter-spacing:.12em;text-transform:uppercase;flex:none}.practice-tools{display:flex;flex-wrap:wrap;gap:var(--space-2);align-items:center;margin:0 0 var(--space-4)}.size-row{display:flex;flex-wrap:wrap;border:2px solid var(--line)}.size-chip{min-width:44px;min-height:44px;padding:0;background:var(--surface);color:var(--muted);border:0;border-right:1px solid var(--line);cursor:pointer;font-family:var(--font-mono);font-weight:600}.size-chip:last-child{border-right:0}.size-chip.on{background:var(--ink);color:var(--bg)}.size-chip:hover:not(:disabled):not(.on){color:var(--ink);background:var(--surface-2)}.id-form{display:flex;flex-wrap:wrap;gap:var(--space-2);align-items:center;flex:1 1 220px}.id-form label{font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}.id-form input{flex:1 1 140px;min-height:44px;padding:0 10px;background:var(--surface);color:var(--ink);border:2px solid var(--line);font-family:var(--font-mono);font-size:var(--text-sm)}.btn{background:var(--surface-2);color:var(--ink);border:2px solid var(--line);border-radius:var(--radius);min-height:44px;padding:0 14px;cursor:pointer}.btn:hover:not(:disabled){border-color:var(--muted)}.btn:disabled{opacity:.4;cursor:default}.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);font-weight:700}.btn.primary:hover:not(:disabled){filter:brightness(1.06)}.dock{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:var(--space-2);margin-top:var(--space-4)}.dock .btn{min-width:0;padding:0 6px}.toggles{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin:var(--space-4) 2px 0;color:var(--muted);font-size:var(--text-sm)}.check{display:flex;align-items:center;gap:8px;cursor:pointer;min-height:44px}.hint{margin:0 0 0 auto}.stage{position:relative;min-height:280px}.board-frame{position:relative;overflow-x:auto;padding:12px;background:linear-gradient(var(--accent),var(--accent)) top left / 22px 2px no-repeat,linear-gradient(var(--accent),var(--accent)) top left / 2px 22px no-repeat,linear-gradient(var(--accent),var(--accent)) top right / 22px 2px no-repeat,linear-gradient(var(--accent),var(--accent)) top right / 2px 22px no-repeat,linear-gradient(var(--accent),var(--accent)) bottom left / 22px 2px no-repeat,linear-gradient(var(--accent),var(--accent)) bottom left / 2px 22px no-repeat,linear-gradient(var(--accent),var(--accent)) bottom right / 22px 2px no-repeat,linear-gradient(var(--accent),var(--accent)) bottom right / 2px 22px no-repeat,var(--surface);border:2px solid var(--line)}.board{display:grid;gap:0;touch-action:none;-webkit-user-select:none;user-select:none}.cell{aspect-ratio:1;min-width:28px;min-height:28px;border:0;border-radius:0;padding:0;cursor:pointer;display:grid;place-items:center;position:relative;overflow:hidden}.cell-cursor{outline:2px solid var(--accent);outline-offset:-2px;z-index:1}.cell-pattern{position:absolute;inset:0;pointer-events:none;opacity:.42}.cell-pattern[data-pat="0"]{background-image:radial-gradient(currentColor 1.1px,transparent 1.2px);background-size:7px 7px}.cell-pattern[data-pat="1"]{background-image:repeating-linear-gradient(0deg,currentColor 0 1.5px,transparent 1.5px 6px)}.cell-pattern[data-pat="2"]{background-image:repeating-linear-gradient(90deg,currentColor 0 1.5px,transparent 1.5px 6px)}.cell-pattern[data-pat="3"]{background-image:repeating-linear-gradient(45deg,currentColor 0 1.5px,transparent 1.5px 7px)}.cell-pattern[data-pat="4"]{background-image:repeating-linear-gradient(-45deg,currentColor 0 1.5px,transparent 1.5px 7px)}.cell-pattern[data-pat="5"]{background-image:repeating-linear-gradient(45deg,currentColor 0 1.2px,transparent 1.2px 7px),repeating-linear-gradient(-45deg,currentColor 0 1.2px,transparent 1.2px 7px)}.cell-pattern[data-pat="6"]{background-image:radial-gradient(currentColor 1.4px,transparent 1.5px);background-size:5px 5px}.cell-pattern[data-pat="7"]{background-image:repeating-linear-gradient(30deg,currentColor 0 2px,transparent 2px 8px)}.cell-pattern[data-pat="8"]{background-image:radial-gradient(circle,transparent 2px,currentColor 2.2px,currentColor 2.8px,transparent 3px);background-size:10px 10px}.cell-pattern[data-pat="9"]{background-image:repeating-linear-gradient(0deg,currentColor 0 1.2px,transparent 1.2px 8px),repeating-linear-gradient(90deg,currentColor 0 1.2px,transparent 1.2px 8px)}.cell-pattern[data-pat="10"]{background-image:repeating-linear-gradient(12deg,currentColor 0 1px,transparent 1px 5px)}.cell-pattern[data-pat="11"]{background-image:repeating-linear-gradient(90deg,currentColor 0 3px,transparent 3px 8px)}.glyph{position:relative;z-index:1;width:58%;height:58%}.cell:disabled{cursor:default}.cell-bad{outline:2px solid var(--danger);outline-offset:-2px}.cell:hover:not(:disabled){filter:brightness(1.06)}.crown,.mark{color:currentColor}.mark{opacity:.72}.hint-mark{position:absolute;inset:0;pointer-events:none;z-index:0}.hint-mark[data-hint=focus]{background-image:repeating-linear-gradient(-45deg,#140c088c 0 3px,#f4d27acc 3px 7px)}.hint-mark[data-hint=error]{background-image:repeating-linear-gradient(45deg,#140c0880 0 3px,#dc5a5abf 3px 7px)}.hint-mark[data-hint=glow]{background-image:radial-gradient(rgba(20,12,8,.4) 1.15px,transparent 1.35px);background-size:7px 7px}.cell-hint-glow{outline:2px solid rgba(228,160,58,.9);outline-offset:-2px}.cell-hint-focus{z-index:1;outline:2px solid #f4d27a;outline-offset:-2px}.cell-hint-focus:has(.hint-mark[data-hint=error]){outline-color:#e07070}.hint-card{margin-top:14px;padding:14px 16px;background:var(--surface);border:2px solid var(--line);border-left:4px solid var(--accent)}.hint-card h2{margin:0 0 6px;font-family:var(--font-display);font-size:var(--text-lg);font-weight:800;letter-spacing:-.02em}.hint-card p{margin:0;color:var(--muted);line-height:var(--lh-body)}.hint-stay{margin-top:8px!important;font-size:var(--text-sm)}.hint-kicker{margin:0 0 4px!important;font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)!important}.hint-error{border-left-color:var(--danger)}.hint-error .hint-kicker{color:var(--danger)!important}.hint-none{border-left-color:var(--muted)}.overlay-card,.win{display:grid;justify-items:center;gap:8px;text-align:center}.overlay-card{padding:48px 16px;color:var(--muted)}.overlay-card p{margin:0;color:var(--ink)}.overlay-card .sub{color:var(--muted);font-size:var(--text-sm)}.pulse{width:12px;height:12px;background:var(--accent);animation:pulse 1.1s ease-in-out infinite}.win{margin-top:14px;padding:0;border:0;background:transparent;gap:12px}.result-card{width:100%;padding:18px 16px 16px;border:2px solid var(--accent);background:var(--surface);text-align:left}.result-brand{margin:0 0 4px;font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}.result-id{margin:0;font-family:var(--font-mono);font-size:var(--text-sm);font-weight:600}.result-time{margin:10px 0 6px;font-family:var(--font-display);font-size:var(--text-2xl);font-weight:800;letter-spacing:-.04em;line-height:var(--lh-tight)}.result-meta{margin:0;color:var(--muted);font-family:var(--font-mono);font-size:var(--text-sm)}.result-grid{margin:14px 0 0;padding:0;overflow:auto;font-family:"Apple Color Emoji","Segoe UI Emoji","Noto Color Emoji",sans-serif;font-size:clamp(11px,4.2vw,20px);line-height:1.08;letter-spacing:0;white-space:pre;-webkit-user-select:all;user-select:all}.result-url{margin:10px 0 0;font-family:var(--font-mono);font-size:11px;color:var(--muted);word-break:break-all}.share-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;min-width:160px;padding:0 18px;background:var(--ink);color:var(--bg);border:2px solid var(--ink);font-weight:700;cursor:pointer}.share-btn:hover{filter:brightness(1.06)}.share-icon{width:20px;height:20px}.share-note{margin:0;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent)}@keyframes pulse{0%,to{opacity:.35;transform:scale(.85)}50%{opacity:1;transform:scale(1)}}@media(max-width:640px){.spec{grid-template-columns:1fr 1fr}.spec-item{border-bottom:1px solid var(--line)}.spec-id{grid-column:1 / -1}.hint{margin-left:0;width:100%}.masthead{align-items:stretch;flex-direction:column}.modes{width:100%}.mode{flex:1}}.sheet-backdrop{position:fixed;inset:0;background:#080604b8;z-index:20;display:grid;align-items:end;justify-items:center;padding:12px}.sheet{width:min(520px,100%);max-height:min(88vh,720px);overflow:auto;background:var(--surface);border:2px solid var(--line);padding:16px}.sheet-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.sheet h2{margin:0;font-family:var(--font-display);font-size:var(--text-xl);font-weight:800;letter-spacing:-.03em;text-transform:uppercase}.sheet-block{border-top:1px solid var(--line);padding:14px 0}.sheet-block h3{margin:0 0 8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}.sheet-block p{margin:0 0 10px;color:var(--muted);font-size:var(--text-sm);line-height:var(--lh-body)}.sheet-ok{color:var(--success)!important}.sheet-meta{margin:0 0 8px}.sheet-block .btn+.btn{margin-top:8px}.lb{list-style:none;margin:0;padding:0;font-family:var(--font-mono);font-size:var(--text-sm)}.lb li{display:grid;grid-template-columns:1fr auto auto;gap:10px;padding:6px 0;border-bottom:1px solid var(--line);color:var(--ink)}.size-chip.locked{opacity:.55}.streak-risk{font-weight:400;color:var(--accent);font-size:10px;letter-spacing:.08em;text-transform:uppercase}.ach-list{list-style:none;margin:0;padding:0}.ach-list li{display:grid;gap:2px;padding:8px 0;border-bottom:1px solid var(--line);color:var(--muted)}.ach-list li.on{color:var(--ink)}.ach-list strong{font-family:var(--font-mono);font-size:var(--text-sm)}.ach-list span{font-size:var(--text-sm)}.ach-toast{position:fixed;right:16px;bottom:max(16px,env(safe-area-inset-bottom));z-index:40;width:min(280px,calc(100vw - 32px));padding:12px 14px;border:2px solid var(--accent);background:var(--surface)}.ach-kicker{margin:0;font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}.ach-title{margin:4px 0 0;font-family:var(--font-display);font-size:var(--text-lg);font-weight:800;letter-spacing:-.03em;text-transform:uppercase}.ach-copy{margin:4px 0 0;color:var(--muted);font-size:var(--text-sm)}.howto-backdrop,.howto{z-index:30}.howto-backdrop{position:fixed;inset:0;background:#0c0a08b8;display:grid;place-items:center;padding:16px}.howto{width:min(420px,100%);padding:20px 18px;background:var(--surface);border:2px solid var(--accent)}.howto h2{margin:0 0 12px;font-family:var(--font-display);font-size:var(--text-xl);text-transform:uppercase}.howto-steps{margin:0 0 16px;padding:0;list-style:none;display:grid;gap:12px}.howto-steps li{display:grid;gap:4px}.howto-steps strong{font-family:var(--font-mono);font-size:var(--text-sm)}.howto-steps span{color:var(--muted);font-size:var(--text-sm);line-height:var(--lh-body)}.cal{display:grid;grid-template-columns:repeat(7,1fr);gap:4px;margin:0 0 12px}.cal-day{min-height:36px;border:1px solid var(--line);background:var(--surface-2);color:var(--muted);font-family:var(--font-mono);font-size:11px;cursor:pointer}.cal-day.won{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}.cal-day.today{outline:1px solid var(--ink)}.lb-open{display:grid;grid-template-columns:1fr auto auto;gap:10px;width:100%;border:0;background:transparent;color:inherit;font:inherit;text-align:left;cursor:pointer;padding:0}.import-label{display:block;margin:10px 0 6px;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}.import-box{width:100%;margin:0 0 8px;padding:8px;background:var(--bg);color:var(--ink);border:1px solid var(--line);font-family:var(--font-mono);font-size:11px}.install-hint{position:fixed;left:12px;right:12px;bottom:max(12px,env(safe-area-inset-bottom));z-index:20;margin:0;padding:10px 12px;background:var(--surface);border:2px solid var(--line);font-size:var(--text-sm);color:var(--muted)}.install-dismiss{margin-left:8px;border:0;background:transparent;color:var(--accent);font:inherit;cursor:pointer}@media(max-width:560px){.dock{grid-template-columns:repeat(3,minmax(0,1fr))}}.masthead-actions{display:flex;align-items:flex-end;gap:8px}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}}