@property --hint-progress{syntax: "<number>"; initial-value: 0; inherits: true;}:root{--bg: #0f1115;--bg-elevated: #171a21;--surface: #1f2430;--surface-strong: #262c3a;--border: #2e3342;--border-strong: #3a4152;--text: #e6e8ee;--text-muted: #9aa3b2;--text-dim: #828b9b;--digit-solved: #f2f4f9;--candidate: #a6afc0;--accent: #7aa2f7;--accent-soft: #7aa2f722;--accent-strong: #8ebaff;--accent-alt: #f7a27a;--accent-alt-soft: #f7a27a22;--accent-alt-strong: #ffb68e;--select: #e0af68;--select-soft: #e0af6822;--select-strong: #f0c27a;--shared: #a78bfa;--shared-soft: #a78bfa22;--danger: #f07178;--success: #9ece6a;--warning: #c9772a;--warning-soft: #c9772a22;--warning-strong: #e6a35a;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 14px;--ease-out: cubic-bezier(.2, .7, .2, 1);--dur-fast: .12s;--dur-med: .22s;--wah: 0;--chroma-rest: .72;--font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;--font-digit: "Atkinson Hyperlegible", "Inter", system-ui, sans-serif;--font-display: "Archivo Narrow", "Saira Condensed", "Arial Narrow", sans-serif;--grid-max: min(100vw, 100vmin);--cage-dash: 2px}@media(min-width:640px){:root{--grid-max: min(72vmin, 560px)}}*,*:before,*:after{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:var(--font-sans);color:var(--text);background:var(--bg);line-height:1.4;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}button:focus-visible{outline:2px solid var(--accent-strong);outline-offset:2px}.board app-grid{filter:saturate(var(--chroma-rest, .72));transition:filter var(--dur-med) var(--ease-out);will-change:filter}.board.is-casting app-cell:not([data-cast]){animation:cast-recede 1.65s var(--ease-out) forwards}@keyframes cast-recede{0%{opacity:1}24%{opacity:.52}46%{opacity:.52}70%{opacity:1}to{opacity:1}}.board.is-casting app-cell[data-cast=premise]:before,.board.is-casting app-cell[data-cast=target]:before,.board.is-casting app-cell[data-cast=solved]:before{content:"";position:absolute;inset:0;pointer-events:none;z-index:3;border-radius:3px;opacity:0;box-shadow:inset 0 0 0 2px color-mix(in oklab,var(--select) 88%,transparent),0 0 12px 1px color-mix(in oklab,var(--select) 45%,transparent);animation:cast-focus-ring 1.65s var(--ease-out) forwards}@keyframes cast-focus-ring{0%{opacity:0;transform:scale(1.5)}24%{opacity:1;transform:scale(1)}46%{opacity:.55;transform:scale(1)}62%{opacity:0;transform:scale(1)}to{opacity:0;transform:scale(1)}}.board.is-casting{--sw: 1}.board.is-casting[data-cast-tier="1"]{--sw: 1.15}.board.is-casting[data-cast-tier="2"]{--sw: 1.35}.board.is-casting[data-cast-tier="3"]{--sw: 1.6}.board.is-casting app-cell[data-cast=premise],.board.is-casting app-cell[data-cast=target]{position:relative;z-index:2;animation:cell-swell 1.65s var(--ease-out) forwards}.board.is-casting app-cell[data-cast=target]{--sw-boost: 1.35}@keyframes cell-swell{0%{transform:scale(1);filter:none}24%{transform:scale(1);filter:none}42%{transform:scale(calc(1 + .06 * var(--sw, 1) * var(--sw-boost, 1)));filter:brightness(1.35) saturate(1.5)}60%{transform:scale(1);filter:brightness(1.12) saturate(1.2)}to{transform:scale(1);filter:none}}.board app-cell[data-cast=autoclean] :is(.candidates,.digit),.board app-cell[data-cast=solved] :is(.candidates,.digit),.board app-cell[data-cast=target] :is(.candidates,.digit){position:relative;animation:cell-bloom-shimmer 1.65s var(--ease-out) forwards}.board app-cell[data-cast=autoclean] :is(.candidates,.digit):after,.board app-cell[data-cast=solved] :is(.candidates,.digit):after,.board app-cell[data-cast=target] :is(.candidates,.digit):after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(100deg,transparent 35%,color-mix(in oklab,var(--success) 55%,transparent) 50%,transparent 65%);background-size:300% 100%;background-position:150% 0;animation:cell-shimmer-sweep 1.65s var(--ease-out) forwards}.board app-cell[data-cast=autoclean] :is(.candidates,.digit):before,.board app-cell[data-cast=solved] :is(.candidates,.digit):before,.board app-cell[data-cast=target] :is(.candidates,.digit):before{content:"";position:absolute;inset:-6%;pointer-events:none;border-radius:4px;opacity:0;box-shadow:0 0 0 2px color-mix(in oklab,var(--success) 80%,transparent),0 0 10px 1px color-mix(in oklab,var(--success) 45%,transparent);animation:autoclean-focus-ring 1.65s var(--ease-out) forwards}@keyframes autoclean-focus-ring{0%{opacity:0;transform:scale(1.5)}12%{opacity:1;transform:scale(1)}33%{opacity:1;transform:scale(1)}44%{opacity:0;transform:scale(1)}to{opacity:0;transform:scale(1)}}@keyframes cell-bloom-shimmer{0%{transform:scale(1);filter:none}33%{transform:scale(1);filter:none}44%{transform:scale(1.09);filter:brightness(1.3) drop-shadow(0 0 5px color-mix(in oklab,var(--success) 55%,transparent))}to{transform:scale(1);filter:none}}@keyframes cell-shimmer-sweep{0%,33%{opacity:0;background-position:150% 0}44%{opacity:1}74%{opacity:1;background-position:-150% 0}86%,to{opacity:0;background-position:-150% 0}}.board.is-sweeping:after{content:"";position:absolute;inset:0;pointer-events:none;z-index:1;border-radius:inherit;background:radial-gradient(circle at 50% 50%,color-mix(in oklab,var(--success) 32%,transparent) 0%,transparent 55%);opacity:0;transform:scale(.4);animation:sweep-radial-shimmer 1.4s var(--ease-out)}@keyframes sweep-radial-shimmer{0%{opacity:0;transform:scale(.4)}35%{opacity:.85;transform:scale(1)}to{opacity:0;transform:scale(1.12)}}.board.is-casting app-cell .cast-flight{position:absolute;inset:0;padding:18% 4% 4% 14%;display:grid;grid-template-columns:repeat(var(--cand-grid, 3),1fr);grid-template-rows:repeat(var(--cand-grid, 3),1fr);place-items:center;pointer-events:none;z-index:4;grid-template-areas:"d1 d2 d3" "d4 d5 d6" "d7 d8 d9"}.board.is-casting app-cell .cast-flight .cast-fly{display:grid;place-items:center;color:var(--danger, #f07178);font-family:var(--font-digit);line-height:1;animation:cand-flight 1.65s var(--ease-out) forwards}@keyframes cand-flight{0%{opacity:.9;transform:translateY(0) scale(1)}24%{opacity:.9;transform:translateY(0) scale(1)}60%{opacity:0;transform:translateY(-140%) scale(.6)}to{opacity:0;transform:translateY(-140%) scale(.6)}}.board--no-fx app-cell .cast-flight{display:none}.board--no-fx app-grid{filter:saturate(1);transition:none}.board--no-fx.is-casting app-grid{animation:none;filter:saturate(1)}.board--no-fx app-cell[data-cast]{animation:none;transform:none;box-shadow:none}.board--no-fx app-cell:not([data-cast]){animation:none;opacity:1;filter:none}.board--no-fx app-cell[data-cast]:before{animation:none;opacity:0}.board--no-fx app-cell[data-cast=autoclean] :is(.candidates,.digit),.board--no-fx app-cell[data-cast=solved] :is(.candidates,.digit),.board--no-fx app-cell[data-cast=target] :is(.candidates,.digit){animation:none;transform:none;filter:none}.board--no-fx app-cell[data-cast=autoclean] :is(.candidates,.digit):after,.board--no-fx app-cell[data-cast=solved] :is(.candidates,.digit):after,.board--no-fx app-cell[data-cast=target] :is(.candidates,.digit):after{display:none}.board--no-fx app-cell[data-cast=autoclean] :is(.candidates,.digit):before,.board--no-fx app-cell[data-cast=solved] :is(.candidates,.digit):before,.board--no-fx app-cell[data-cast=target] :is(.candidates,.digit):before{display:none}.board--no-fx app-cage-overlay .cage-edge{transition:none}.board--no-fx app-cell.is-revealing .cell{animation:none;transform:none}@media(prefers-reduced-motion:reduce){.board app-grid{filter:saturate(1);transition:none}.board.is-casting app-grid{animation:none;filter:saturate(1)}.board.is-casting app-cell[data-cast]{animation:none;transform:none;box-shadow:none}.board.is-casting app-cell .cast-flight{display:none}.board.is-casting app-cell:not([data-cast]){animation:none;opacity:1;filter:none}.board.is-casting app-cell[data-cast]:before{animation:none;opacity:0}.board app-cell[data-cast=autoclean] :is(.candidates,.digit),.board app-cell[data-cast=solved] :is(.candidates,.digit),.board app-cell[data-cast=target] :is(.candidates,.digit){animation:none;transform:none;filter:none}.board app-cell[data-cast=autoclean] :is(.candidates,.digit):after,.board app-cell[data-cast=solved] :is(.candidates,.digit):after,.board app-cell[data-cast=target] :is(.candidates,.digit):after{display:none}.board app-cell[data-cast=autoclean] :is(.candidates,.digit):before,.board app-cell[data-cast=solved] :is(.candidates,.digit):before,.board app-cell[data-cast=target] :is(.candidates,.digit):before{animation:none;opacity:0}.board.is-sweeping:after{animation:none;opacity:0}}.board-row{position:relative}.method-stamp-layer{position:absolute;inset:0;display:grid;place-items:center;pointer-events:none;z-index:5}.method-stamp{font-family:var(--font-display);text-transform:uppercase;letter-spacing:.08em;font-weight:700;font-size:clamp(1.4rem,6vw,2.4rem);color:var(--select-strong);padding:.1em .55em;border-radius:999px;background:color-mix(in oklab,var(--surface) 78%,transparent);-webkit-backdrop-filter:blur(6px) saturate(1.2);backdrop-filter:blur(6px) saturate(1.2);box-shadow:0 0 0 1px color-mix(in oklab,var(--select-strong) 42%,transparent),0 8px 30px color-mix(in oklab,var(--bg) 70%,transparent),0 0 28px color-mix(in oklab,var(--select-strong) 45%,transparent);text-shadow:0 1px 3px color-mix(in oklab,var(--bg) 85%,transparent);animation:method-stamp-in 1.65s var(--ease-out) forwards}@keyframes method-stamp-in{0%{opacity:0;transform:scale(.7)}18%{opacity:1;transform:scale(1.08)}30%{transform:scale(1)}80%{opacity:1}to{opacity:0;transform:scale(1)}}@media(prefers-reduced-motion:reduce){.method-stamp{animation:none;opacity:1;transform:none}}.rejection.is-locked{background:color-mix(in oklab,var(--danger, #d0454b) 22%,var(--surface));box-shadow:inset 0 0 0 1px color-mix(in oklab,var(--danger, #d0454b) 60%,transparent),0 8px 26px -8px color-mix(in oklab,var(--danger, #d0454b) 55%,transparent),0 2px 6px #0000004d;font-weight:600}.rejection.is-locked .lock-icon{display:inline-block;margin-inline-end:.35em;animation:lock-shake .52s var(--ease-out, ease-out) both}.lock-stamp{animation:lock-stamp-in .46s var(--ease-out, ease-out) both}@keyframes lock-stamp-in{0%{opacity:0;transform:scale(.82)}40%{opacity:1;transform:scale(1.06)}70%{transform:scale(.98)}to{opacity:1;transform:scale(1)}}@keyframes lock-shake{0%,to{transform:translate(0) rotate(0)}20%{transform:translate(-3px) rotate(-7deg)}45%{transform:translate(3px) rotate(6deg)}70%{transform:translate(-2px) rotate(-4deg)}85%{transform:translate(1px) rotate(2deg)}}@media(prefers-reduced-motion:reduce){.lock-stamp{animation:none;opacity:1;transform:none}.rejection.is-locked .lock-icon{animation:none}}.settings-fx{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:4px 22px 0}.settings-fx .sfx-toggle.is-on{background:color-mix(in oklab,var(--success) 20%,var(--surface));box-shadow:inset 0 0 0 1px color-mix(in oklab,var(--success) 70%,transparent)}.sfx-hint{padding-inline:22px;margin-top:4px}.sound-debug-overlay{position:fixed;top:50%;left:8px;transform:translateY(-50%);z-index:60;width:220px;max-height:90vh;overflow:auto;padding:10px 12px;border-radius:10px;background:#12141aeb;color:#e8eaf0;border:1px solid rgba(138,92,255,.4);box-shadow:0 4px 20px #0006;font-family:system-ui,sans-serif;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);pointer-events:none}.sound-debug-overlay .sd-title{display:block;font-size:.82rem;font-weight:700;letter-spacing:.02em;color:#b49aff;margin-bottom:4px}.sound-debug-overlay .sd-facts{display:grid;grid-template-columns:auto 1fr;gap:4px 12px;margin:6px 0 4px;font-size:.82rem}.sound-debug-overlay .sd-facts dt{color:var(--text-dim, #6b7280)}.sound-debug-overlay .sd-facts dd{margin:0;font-variant-numeric:tabular-nums}.sound-debug-overlay .sd-atmo{font-weight:600}.sound-debug-overlay .sd-bar{display:inline-block;width:70px;height:8px;border-radius:4px;background:#7f7f7f40;overflow:hidden;vertical-align:middle;margin-right:6px}.sound-debug-overlay .sd-fill{display:block;height:100%;background:linear-gradient(90deg,#3d5cff,#8a5cff);transition:width .4s ease-out}.sound-debug-overlay .sd-note{margin:4px 0 0;font-size:.72rem;color:var(--text-dim, #6b7280);font-style:italic}.settings-overlay{position:relative;width:min(96vw,640px);max-width:640px;height:min(92vh,760px);overflow:hidden;border:1px solid var(--border-strong);border-radius:var(--radius-lg, 14px);background:var(--bg-elevated);box-shadow:0 24px 64px #0000008c;animation:fade-in var(--dur-med, .22s) var(--ease-out, ease-out);display:flex;flex-direction:column}.settings-overlay .settings-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px 8px;flex:none}.settings-overlay .settings-head .drawer-title{margin:0;font-size:.82rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted)}.settings-overlay .settings-head .settings-close{position:static;width:32px;height:32px;display:grid;place-items:center;border-radius:999px;font-size:1.3rem;line-height:1;color:var(--text-muted);background:transparent;transition:background var(--dur-fast),color var(--dur-fast)}.settings-overlay .settings-head .settings-close:hover{background:var(--surface);color:var(--text)}.settings-overlay .settings-head .settings-close:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.settings-overlay .settings-tabs{display:flex;gap:2px;padding:0 12px;flex:none;border-bottom:1px solid var(--border);overflow-x:auto}.settings-overlay .settings-tabs .settings-tab{flex:0 0 auto;padding:9px 14px;font-size:.85rem;font-weight:600;color:var(--text-muted);background:transparent;border:0;border-bottom:2px solid transparent;margin-bottom:-1px;cursor:pointer;transition:color var(--dur-fast),border-color var(--dur-fast);white-space:nowrap}.settings-overlay .settings-tabs .settings-tab:hover{color:var(--text)}.settings-overlay .settings-tabs .settings-tab.is-active{color:var(--accent);border-bottom-color:var(--accent)}.settings-overlay .settings-tabs .settings-tab:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.settings-overlay .settings-body{flex:1;min-height:0;overflow-y:auto;scrollbar-gutter:stable;padding:16px 20px calc(20px + env(safe-area-inset-bottom,0px));display:flex;flex-direction:column;gap:18px}.settings-overlay .automate-intro{margin-top:0}.settings .drawer-title{margin:0;padding-right:36px;font-size:1.3rem;font-weight:700;letter-spacing:-.01em;text-transform:none;color:var(--text)}.settings .drawer-section{display:flex;flex-direction:column;gap:12px;padding-bottom:20px;border-bottom:1px solid var(--border)}.settings .drawer-section:last-of-type{border-bottom:none;padding-bottom:0}.settings .drawer-heading{margin:0;font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.07em;color:var(--text-muted)}.settings .ft-expand.auto-apply-row{justify-content:space-between;width:100%;padding:14px 12px;border-radius:var(--radius-md, 8px);background:var(--surface);box-shadow:inset 0 0 0 1px var(--border)}.settings .ft-expand.auto-apply-row .ft-label{font-size:1rem;font-weight:600}.settings .ft-expand.auto-apply-row .ft-caret{font-size:1.1rem;transform:rotate(0)}.settings .ft-expand.auto-apply-row:hover{background:var(--surface-strong)}.settings .ft-expand.auto-apply-row.is-open .ft-caret{transform:rotate(90deg)}.settings .auto-apply-body{margin-top:8px;padding-left:6px;box-shadow:inset 2px 0 0 0 var(--border)}.settings .auto-apply-body ul{padding:8px}.settings .auto-apply-body .settings-hint{margin:0 0 6px}.settings .auto-apply-body .auto-do-group{display:flex;flex-direction:column;gap:8px;padding:8px 8px 12px;margin-bottom:4px;border-bottom:1px solid var(--border)}.settings .auto-apply-body .auto-do-heading{margin:0;font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted)}.settings .auto-apply-body>.auto-do-heading{padding:4px 8px 0}.settings .settings-fx{padding:0}.settings .sfx-hint{padding-inline:0}.settings .sfx-label{font-size:.95rem;color:var(--text)}.settings .settings-lang{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:4px}.settings .lang-opts{display:inline-flex;gap:4px}.settings .lang-opt{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border:none;border-radius:999px;background:transparent;color:var(--text-muted);font-size:.88rem;cursor:pointer;box-shadow:inset 0 0 0 1px var(--border-strong);transition:background var(--dur-fast),color var(--dur-fast)}.settings .lang-opt:hover{background:var(--surface-strong);color:var(--text)}.settings .lang-opt:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.settings .lang-opt.is-active{background:color-mix(in oklab,var(--accent) 22%,var(--surface));color:var(--text);box-shadow:inset 0 0 0 1px var(--accent)}.settings .settings-atmosphere{display:flex;flex-direction:column;gap:8px;margin-top:4px}.settings .atmosphere-opts{display:flex;flex-direction:column;gap:6px}.settings .atmosphere-opt{display:flex;flex-direction:column;gap:2px;padding:8px 12px;border:none;border-radius:var(--radius-md, 8px);background:transparent;color:var(--text-muted);text-align:start;cursor:pointer;box-shadow:inset 0 0 0 1px var(--border-strong);transition:background var(--dur-fast),color var(--dur-fast)}.settings .atmosphere-opt:hover{background:var(--surface-strong);color:var(--text)}.settings .atmosphere-opt:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.settings .atmosphere-opt.is-active{background:color-mix(in oklab,var(--accent) 22%,var(--surface));color:var(--text);box-shadow:inset 0 0 0 1px var(--accent)}.settings .atmosphere-name{font-size:.95rem;font-weight:600}.settings .atmosphere-desc{font-size:.8rem;color:var(--text-muted)}.settings .settings-fullscreen{display:flex;align-items:center;justify-content:space-between;gap:12px}.settings .ft-expand.about-row{justify-content:space-between;width:100%;padding:4px;border-radius:var(--radius-sm, 6px)}.settings .ft-expand.about-row:hover{background:var(--surface)}.settings .ft-expand.about-row .ft-caret{transform:rotate(0)}.settings .ft-expand.about-row.is-open .ft-caret{transform:rotate(90deg)}.settings .settings-update{display:flex;align-items:center;justify-content:space-between;gap:12px}.settings .drawer-about .tagline{margin:0;font-size:.92rem;font-weight:600;color:var(--text)}.settings .drawer-about .blurb{margin:0;font-size:.82rem;line-height:1.5;color:var(--text-muted)}.settings .drawer-about .about-facts{margin:0;display:grid;grid-template-columns:auto 1fr;gap:4px 14px;align-items:baseline;font-size:.82rem}.settings .drawer-about .about-facts dt{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:.7rem}.settings .drawer-about .about-facts dd{margin:0;color:var(--text);font-weight:600}.settings .drawer-about .about-facts .about-version{font-family:var(--font-mono, ui-monospace, monospace);font-weight:500;font-size:.76rem;color:var(--text-muted);word-break:break-word}.settings .drawer-about .copyright{margin:4px 0 0;font-size:.7rem;color:var(--text-dim)}.settings .drawer-about .about-howto{display:inline-block;margin:2px 0 0;font-size:.82rem;font-weight:600;color:var(--accent);text-decoration:none}.settings .drawer-about .about-howto:hover{text-decoration:underline}.settings-toggle .cleaning-ring{position:absolute;inset:-3px;border-radius:50%;pointer-events:none;z-index:1;background:conic-gradient(from 0deg,transparent 0deg,color-mix(in oklab,var(--success) 78%,transparent) 90deg,transparent 150deg);-webkit-mask:radial-gradient(closest-side,transparent 64%,#000 70%);animation:cleaning-spin .9s linear infinite}.settings-toggle .icon{position:relative;z-index:2}@keyframes cleaning-spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.settings-toggle .cleaning-ring{animation:none;background:none;box-shadow:0 0 0 2px color-mix(in 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