:root{--bg:#ecf0ff;--surface:#ffffff;--ink:#132558;--muted:#5e6b89;--accent:#254fe4;--second:#c2f363;--line:#cdd6f1;--radius:12px;--font:Inter, ui-sans-serif, system-ui, sans-serif;--buttonink:#ffffff;--soft:color-mix(in srgb, #254fe4 9%, #ffffff);}

*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 var(--font);overflow-x:clip}button,input,textarea,select{font:inherit}button,a,input,textarea{touch-action:manipulation}a{color:inherit;text-decoration:none}button{cursor:pointer}button:disabled{cursor:default;opacity:.5}img{max-width:100%;display:block}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(38px,5vw,72px);line-height:1.05;letter-spacing:-.055em;margin-bottom:24px}h2{font-size:clamp(23px,2.4vw,32px);line-height:1.18;letter-spacing:-.035em;margin-bottom:16px}h3{font-size:19px;line-height:1.25;letter-spacing:-.02em}p{color:var(--muted)}:focus-visible{outline:3px solid var(--accent);outline-offset:4px}button{border:0}a:hover{color:var(--accent)}
.cobalt-sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.cobalt-skip{position:absolute;top:-100px;left:12px;padding:12px;background:var(--accent);color:var(--bg);z-index:99}.cobalt-skip:focus{top:12px}
.cobalt-header{max-width:1480px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:26px 40px;border-bottom:1px solid var(--line)}.cobalt-brand{display:flex;align-items:center;gap:12px;min-width:0}.cobalt-brand img{width:42px;height:42px;border-radius:12px}.cobalt-brand>span{font-size:20px;font-weight:850;letter-spacing:-.04em;line-height:1.25}.cobalt-brand small{display:block;font:9px/1.5 ui-sans-serif,system-ui;letter-spacing:.18em;color:var(--muted);margin-top:4px}.cobalt-nav{display:flex;align-items:center;gap:28px;font-size:14px;font-weight:650}.cobalt-nav a[aria-current]{color:var(--accent)}.cobalt-menu-button{display:none;background:var(--surface);color:var(--ink);padding:10px 14px;border:1px solid var(--line);border-radius:8px}.cobalt-main{max-width:1480px;margin:auto;padding:32px 40px 64px;min-height:70vh}.cobalt-eyebrow{font:700 10px/1.5 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var(--line);background:var(--surface);border-radius:12px;overflow:hidden;max-width:500px;width:100%}.cobalt-search label{flex:1;min-width:0}.cobalt-search input{background:none;border:0;padding:14px 17px;width:100%;color:var(--ink);font-size:13px}.cobalt-search button{background:none;color:var(--muted);padding:10px 15px}.cobalt-topline{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:28px}.cobalt-topline>span{font-size:11px;color:var(--muted)}.cobalt-categories{display:flex;flex-wrap:wrap;gap:8px}.cobalt-categories a{display:flex;gap:15px;align-items:center;border:1px solid var(--line);padding:9px 14px;border-radius:30px;font-size:12px;background:var(--surface);color:var(--muted)}.cobalt-categories small{color:var(--accent);font-size:10px}.cobalt-home-grid>*{min-width:0}.cobalt-home-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:40px;align-items:center}.cobalt-sidebar{padding:16px 14px 20px 0;border-right:1px solid var(--line)}.cobalt-sidebar .cobalt-categories{display:grid;gap:8px}.cobalt-sidebar .cobalt-categories a{border:0;background:transparent;border-radius:8px;justify-content:space-between;padding:10px}.cobalt-sidebar .cobalt-categories a:hover{background:var(--surface)}.cobalt-sidebar h2{font-size:14px;margin-bottom:20px}.cobalt-shell{display:grid;grid-template-columns:165px minmax(0,1fr);gap:32px}.cobalt-shell>*{min-width:0}.cobalt-section-heading{display:flex;justify-content:space-between;align-items:end;gap:18px;margin-bottom:22px}.cobalt-section-heading h2{margin:0}.cobalt-section-heading .cobalt-eyebrow{margin:0 0 8px}.cobalt-text-link{font-size:12px;font-weight:650;color:var(--muted);white-space:nowrap}.cobalt-text-link span{margin-left:12px}.cobalt-shelf{margin-top:48px}.cobalt-cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.cobalt-game-card{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .18s,border-color .18s;min-width:0}.cobalt-game-card:hover{transform:translateY(-4px);border-color:var(--accent);color:var(--ink)}.cobalt-card-image{position:relative;aspect-ratio:1.6;overflow:hidden;background:var(--soft)}.cobalt-card-image img{width:100%;height:100%;object-fit:cover;transition:transform .2s}.cobalt-game-card:hover .cobalt-card-image img{transform:scale(1.035)}.cobalt-card-play{position:absolute;bottom:10px;right:10px;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:50%;width:28px;height:28px;text-align:center}.cobalt-card-copy{padding:15px 16px}.cobalt-card-copy small{font-size:9px;text-transform:uppercase;letter-spacing:.14em;color:var(--accent)}.cobalt-card-copy h3{font-size:16px;margin:5px 0}.cobalt-card-copy>span{font-size:11px;color:var(--muted)}.cobalt-play-panel{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:22px;min-width:0;box-shadow:0 20px 50px #0000000d}.cobalt-play-panel:fullscreen{overflow:auto;max-width:none;display:block;padding:30px;background:var(--surface)}.cobalt-play-panel:fullscreen .cobalt-engine-root{max-width:680px;margin:auto}.cobalt-play-top{display:flex;justify-content:space-between;align-items:center;gap:10px;border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:14px}.cobalt-play-top small{font-size:9px;text-transform:uppercase;color:var(--accent);letter-spacing:.12em}.cobalt-play-top h2{font-size:20px;margin:2px 0 0}.cobalt-icon-button{padding:8px 12px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);font-size:18px}.cobalt-game-status{font-size:12px;color:var(--muted);min-height:40px;line-height:1.5;margin-bottom:10px}.cobalt-game-stats{font-size:11px;text-align:center;color:var(--muted);margin-top:12px;min-height:18px}.cobalt-play-bottom{display:flex;justify-content:space-between;gap:12px;font-size:10px;border-top:1px solid var(--line);padding-top:12px;margin-top:12px;color:var(--muted)}.cobalt-play-bottom a{color:var(--accent)}.cobalt-engine-root{min-width:0}.cobalt-game-controls{display:flex;flex-wrap:wrap;justify-content:center;gap:6px;margin:0 0 12px}.cobalt-game-button,.cobalt-number-button{border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:7px;padding:7px 10px;font:600 11px/1.5 ui-sans-serif,system-ui;min-height:34px}.cobalt-game-button:hover,.cobalt-number-button:hover{background:var(--accent);color:var(--buttonink)}.cobalt-number-button{min-width:32px;font-size:13px}.cobalt-sudoku-board,.cobalt-board-grid,.cobalt-grid-board,.cobalt-merge-board,.cobalt-slider-board,.cobalt-memory-board,.cobalt-maze-board,.cobalt-lights-board,.cobalt-mines-board,.cobalt-ladder-board,.cobalt-dots-board,.cobalt-kalah-board{display:grid;grid-template-columns:repeat(var(--cols),minmax(0,1fr));max-width:510px;width:100%;margin:0 auto 14px;gap:3px}.cobalt-sudoku-board{gap:0;border:2px solid var(--line);border-radius:4px;overflow:hidden}.cobalt-sudoku-cell{aspect-ratio:1;min-width:0;padding:0;background:var(--bg);color:var(--accent);font:500 clamp(12px,2vw,24px)/1 ui-sans-serif,system-ui;border:1px solid var(--line);border-radius:0}.cobalt-sudoku-cell[data-fixed="1"]{color:var(--ink);font-weight:750;background:var(--soft)}.cobalt-sudoku-cell[data-diagonal="1"]{box-shadow:inset 0 0 0 2px color-mix(in srgb,var(--accent) 20%,transparent)}.cobalt-sudoku-cell[data-related="1"]{background:color-mix(in srgb,var(--accent) 9%,var(--bg))}.cobalt-sudoku-cell[data-selected="1"]{background:var(--accent);color:var(--buttonink);box-shadow:inset 0 0 0 2px var(--ink)}.cobalt-sudoku-cell[data-conflict="1"]{color:#d9364e}.cobalt-sudoku-cell[data-notes="1"]{font-size:10px;line-height:1.1;word-spacing:1px}.cobalt-sudoku-board[data-size="16"] .cobalt-sudoku-cell{font-size:clamp(10px,1.5vw,17px)}.cobalt-board-cell{aspect-ratio:1;border:1px solid var(--line);background:var(--bg);color:var(--ink);padding:0;min-width:0;font-size:clamp(20px,4vw,42px)}.cobalt-board-cell[data-player="1"]{color:var(--accent)}.cobalt-board-cell[data-player="2"]{color:var(--second)}.cobalt-board-grid[data-game="reversi"]{gap:2px;background:var(--line)}.cobalt-board-grid[data-game="reversi"] .cobalt-board-cell[data-player="1"]{color:#152532;text-shadow:0 0 2px #fff}.cobalt-board-grid[data-game="reversi"] .cobalt-board-cell[data-player="2"]{color:#fff;text-shadow:0 0 2px #000}.cobalt-board-cell[data-legal="1"]{color:var(--accent)}.cobalt-board-grid[data-game="gomoku"]{gap:0}.cobalt-board-grid[data-game="gomoku"] .cobalt-board-cell{font-size:clamp(15px,2.3vw,26px)}.cobalt-merge-board{gap:9px;padding:9px;background:var(--line);border-radius:12px;touch-action:none}.cobalt-merge-tile{aspect-ratio:1;display:flex;align-items:center;justify-content:center;border-radius:7px;font-size:clamp(22px,3vw,38px);font-weight:800;background:color-mix(in srgb,var(--accent) calc(var(--level)*8%),var(--bg));color:var(--ink)}.cobalt-merge-tile[data-value="0"]{background:var(--surface)}.cobalt-slider-cell{aspect-ratio:1;background:var(--accent);color:var(--buttonink);font-size:25px;font-weight:700;border-radius:8px}.cobalt-slider-cell[data-empty="1"]{background:var(--bg)}.cobalt-memory-card{aspect-ratio:1;background:var(--soft);color:var(--accent);font-size:28px;border:1px solid var(--line);border-radius:12px}.cobalt-memory-card[data-shown="1"],.cobalt-memory-card[data-lit="1"]{background:var(--accent);color:var(--buttonink)}.cobalt-memory-card[data-matched="1"]{opacity:.48}.cobalt-light-cell{aspect-ratio:1;border-radius:8px;background:var(--bg);color:var(--muted);font-size:24px;border:1px solid var(--line)}.cobalt-light-cell[data-on="1"]{background:var(--accent);color:var(--buttonink)}.cobalt-mine-cell{aspect-ratio:1;background:var(--soft);color:var(--accent);border:1px solid var(--line);font-size:18px;padding:0}.cobalt-mine-cell[data-open="1"]{background:var(--bg);border-color:transparent}.cobalt-maze-board{gap:0;border:2px solid var(--line)}.cobalt-maze-cell{aspect-ratio:1;border-style:solid;border-color:var(--ink);background:var(--bg);color:var(--accent);font-size:16px;padding:0}.cobalt-maze-cell[data-player="1"]{background:var(--accent);color:var(--buttonink)}.cobalt-ladder-cell{aspect-ratio:1;border:1px solid var(--line);font:12px/1.2 ui-sans-serif,system-ui;text-align:center;padding:5px 0;background:var(--bg)}.cobalt-ladder-cell small{display:block;font-size:8px}.cobalt-ladder-cell[data-jump="up"]{background:color-mix(in srgb,var(--accent) 25%,var(--bg))}.cobalt-ladder-cell[data-jump="down"]{background:color-mix(in srgb,var(--second) 30%,var(--bg))}.cobalt-dots-board{gap:0;grid-template-columns:12px 1fr 12px 1fr 12px 1fr 12px;grid-template-rows:12px 1fr 12px 1fr 12px 1fr 12px;aspect-ratio:1;padding:8px}.cobalt-dot{line-height:12px;text-align:center}.cobalt-edge{background:var(--line);margin:2px;border-radius:3px}.cobalt-edge[data-drawn="1"]{background:var(--accent)}.cobalt-box{display:grid;place-items:center;font-size:28px}.cobalt-box[data-player="1"]{color:var(--accent)}.cobalt-box[data-player="2"]{color:var(--second)}.cobalt-pit{aspect-ratio:1;border:1px solid var(--line);border-radius:50%;background:var(--soft);color:var(--ink);font-size:22px;min-width:0}.cobalt-pit[data-player="1"],.cobalt-pit[data-player="2"]{opacity:1;background:var(--accent);color:var(--buttonink)}.cobalt-nim-pile{background:var(--bg);padding:15px;border-radius:12px;margin-bottom:12px}.cobalt-nim-pile h3{font-size:14px}.cobalt-snake-canvas{width:100%;max-width:510px;aspect-ratio:1;display:block;margin:0 auto 12px;border-radius:12px;touch-action:none}.cobalt-big-number{font:700 clamp(30px,6vw,64px)/1.2 ui-monospace,monospace;text-align:center;padding:50px 0;overflow-wrap:anywhere}.cobalt-recall-form{display:flex;gap:10px;max-width:450px;margin:40px auto}.cobalt-recall-form input{width:100%;min-width:0;border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:8px;padding:12px}.cobalt-reaction-target{width:100%;height:250px;border-radius:16px;background:var(--bg);color:var(--ink);font-size:42px;font-weight:800;border:1px solid var(--line)}.cobalt-reaction-target[data-phase="wait"]{background:#a43c39;color:#fff}.cobalt-reaction-target[data-phase="go"]{background:#137c5b;color:#fff}.cobalt-word-display{font:700 clamp(18px,3vw,32px)/1.5 ui-monospace,monospace;letter-spacing:.08em;text-align:center;padding:22px 0;overflow-wrap:anywhere}.cobalt-word-clue{text-align:center;margin-top:24px;font-size:14px}.cobalt-letter-keyboard{display:flex;flex-wrap:wrap;justify-content:center;gap:7px}.cobalt-letter-key{width:36px;min-height:38px;background:var(--accent);color:var(--buttonink);font-weight:650;border-radius:6px}.cobalt-benefits{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;border-top:1px solid var(--line);padding-top:32px;margin-top:50px}.cobalt-benefits article>span{color:var(--accent);font:600 11px/1.5 ui-monospace,monospace;display:block;margin-bottom:12px}.cobalt-benefits p{font-size:13px}.cobalt-benefits h3{font-size:18px;margin-bottom:10px}.cobalt-page-heading{padding:20px 0 30px;max-width:850px}.cobalt-page-heading h1{font-size:clamp(34px,4vw,56px)}.cobalt-page-heading p{max-width:700px}.cobalt-article{max-width:820px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:40px;margin:0 auto 35px}.cobalt-article h3{margin-top:32px}.cobalt-article li{margin-bottom:10px;color:var(--muted)}.cobalt-article a{color:var(--accent)}.cobalt-article .cobalt-lead{font-size:19px;line-height:1.75}.cobalt-article details{border-top:1px solid var(--line);padding:16px 0}.cobalt-article summary{cursor:pointer;font-weight:650}.cobalt-article details p{margin:12px 0 0}.cobalt-guide-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.cobalt-guide-links a{display:flex;flex-direction:column;padding:14px;border:1px solid var(--line);border-radius:8px;font-size:14px}.cobalt-guide-links span{font-size:11px;color:var(--muted)}.cobalt-breadcrumbs{display:flex;gap:10px;font-size:11px;color:var(--muted);margin-bottom:25px;flex-wrap:wrap}.cobalt-game-heading{display:flex;justify-content:space-between;align-items:center;gap:20px}.cobalt-game-heading h1{font-size:clamp(32px,4vw,52px)}.cobalt-detail-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:30px;align-items:start;margin-bottom:40px;max-width:1080px;margin-left:auto;margin-right:auto}.cobalt-quick-rules{padding:28px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}.cobalt-quick-rules h2{font-size:24px}.cobalt-quick-rules h3{margin-top:24px;font-size:16px}.cobalt-quick-rules p{font-size:13px}.cobalt-quick-rules a{color:var(--accent);font-size:13px}.cobalt-pagination{display:flex;gap:8px;justify-content:center;margin-top:35px}.cobalt-pagination a{padding:8px 17px;border:1px solid var(--line);border-radius:8px}.cobalt-pagination a[aria-current]{background:var(--accent);color:var(--buttonink)}.cobalt-form-panel{max-width:720px;margin:auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:34px}.cobalt-form-panel label{display:grid;gap:8px;font-size:14px;margin-bottom:20px}.cobalt-form-panel input:not([type=hidden]),.cobalt-form-panel textarea{border:1px solid var(--line);border-radius:8px;padding:12px;background:var(--bg);color:var(--ink);width:100%}.cobalt-form-panel small{display:block;font-size:11px;color:var(--muted);margin-top:15px}.cobalt-honeypot{display:none}.cobalt-form-notice{padding:14px;background:var(--bg);border:1px solid var(--accent)}.cobalt-not-found{max-width:720px;padding:30px 0 80px;margin:auto}.cobalt-error-number{display:block;font-size:130px;font-weight:850;line-height:1.1;color:var(--accent);letter-spacing:-.07em}.cobalt-not-found h1{font-size:44px}.cobalt-footer{display:flex;justify-content:space-between;align-items:start;max-width:1480px;gap:40px;margin:auto;border-top:1px solid var(--line);padding:40px}.cobalt-footer-brand{font-weight:850;font-size:21px;letter-spacing:-.04em}.cobalt-footer p{font-size:13px;margin:6px 0}.cobalt-footer small{font-size:10px;color:var(--muted)}.cobalt-footer nav{display:flex;gap:18px;flex-wrap:wrap;max-width:530px;font-size:12px;color:var(--muted)}.cobalt-back-top{padding:12px;border:1px solid var(--line);border-radius:50%}.cobalt-editorial-banner{border-top:3px solid var(--ink);border-bottom:1px solid var(--ink);padding:18px 0;display:flex;justify-content:space-between;font-size:12px}.cobalt-feature-caption{font-size:11px;color:var(--muted);margin-top:14px}.cobalt-collection-band{background:var(--accent);color:var(--buttonink);padding:22px 26px;border-radius:var(--radius);display:flex;justify-content:space-between;align-items:center;margin-top:26px;gap:20px}.cobalt-collection-band h2{margin:0;font-size:24px}.cobalt-console-help{background:var(--surface);border:1px solid var(--line);padding:25px;border-radius:var(--radius);font-size:13px}.cobalt-console-help h2{font-size:22px}.cobalt-console-layout{display:grid;grid-template-columns:1fr 280px;gap:24px}.cobalt-console-layout>div{min-width:0}
@media(min-width:1100px){.cobalt-shell .cobalt-cards{grid-template-columns:repeat(3,minmax(0,1fr))}.cobalt-home-grid .cobalt-play-panel{max-width:570px;width:100%;justify-self:end}.cobalt-home-grid .cobalt-engine-root .cobalt-snake-canvas{max-width:280px}.cobalt-home-grid .cobalt-engine-root .cobalt-sudoku-board{max-width:320px}.cobalt-home-grid .cobalt-engine-root .cobalt-board-grid,.cobalt-home-grid .cobalt-engine-root .cobalt-merge-board,.cobalt-home-grid .cobalt-engine-root .cobalt-memory-board{max-width:340px}}
@media(max-width:1000px){.cobalt-header{padding:20px 24px}.cobalt-main{padding:25px 24px 50px}.cobalt-nav{gap:15px;font-size:12px}.cobalt-shell{grid-template-columns:minmax(0,1fr)}.cobalt-sidebar{border:0;padding:0}.cobalt-sidebar h2{display:none}.cobalt-sidebar .cobalt-categories{display:flex}.cobalt-home-grid{gap:22px}.cobalt-home-intro h1{font-size:48px}.cobalt-cards{grid-template-columns:repeat(3,minmax(0,1fr))}.cobalt-detail-layout{grid-template-columns:minmax(0,1fr) 250px;gap:20px}.cobalt-console-layout{grid-template-columns:minmax(0,1fr) 240px}}
@media(max-width:700px){.cobalt-header{padding:16px 18px;flex-wrap:wrap;gap:10px}.cobalt-brand>span{font-size:17px}.cobalt-brand img{width:35px;height:35px}.cobalt-brand small{font-size:8px}.cobalt-menu-button{display:block}.cobalt-nav{display:none;width:100%;flex-wrap:wrap;padding-top:15px;border-top:1px solid var(--line);gap:18px}.cobalt-nav[data-open="1"]{display:flex}.cobalt-main{padding:20px 16px 42px}.cobalt-topline{margin-bottom:16px}.cobalt-topline>span{display:none}.cobalt-home-grid{grid-template-columns:minmax(0,1fr);gap:20px}.cobalt-home-intro{padding:12px 0}.cobalt-home-intro h1{font-size:48px;margin-bottom:17px}.cobalt-home-intro h1 br{display:none}.cobalt-home-intro>p{font-size:14px}.cobalt-home-intro .cobalt-site-focus{margin-top:17px}.cobalt-intro-actions{gap:15px}.cobalt-categories{flex-wrap:nowrap;overflow:auto;padding-bottom:5px}.cobalt-categories a{flex-shrink:0;font-size:11px}.cobalt-cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.cobalt-card-copy{padding:12px}.cobalt-card-copy h3{font-size:14px}.cobalt-card-copy>span{font-size:10px}.cobalt-section-heading{align-items:start}.cobalt-section-heading h2{font-size:24px}.cobalt-text-link{white-space:normal;max-width:95px;text-align:right;font-size:11px}.cobalt-section-heading .cobalt-eyebrow{font-size:9px}.cobalt-shelf{margin-top:32px}.cobalt-play-panel{padding:14px}.cobalt-play-top{margin-bottom:10px}.cobalt-game-status{font-size:11px}.cobalt-game-button{padding:7px 9px}.cobalt-sudoku-cell{font-size:20px}.cobalt-sudoku-board[data-size="16"] .cobalt-sudoku-cell{font-size:12px}.cobalt-benefits{grid-template-columns:1fr;gap:12px}.cobalt-benefits article{display:grid;grid-template-columns:35px 1fr}.cobalt-benefits article p{grid-column:2}.cobalt-benefits h3{margin-bottom:5px}.cobalt-article{padding:24px 20px;margin-bottom:25px}.cobalt-article .cobalt-lead{font-size:16px}.cobalt-guide-links{grid-template-columns:1fr}.cobalt-detail-layout,.cobalt-console-layout{grid-template-columns:1fr}.cobalt-quick-rules{padding:22px}.cobalt-game-heading{align-items:start}.cobalt-game-heading h1{font-size:34px}.cobalt-page-heading h1{font-size:38px}.cobalt-footer{padding:30px 20px;flex-wrap:wrap;gap:24px}.cobalt-footer nav{max-width:100%;gap:15px}.cobalt-back-top{margin-left:auto}.cobalt-form-panel{padding:22px}.cobalt-collection-band{padding:20px;align-items:start}.cobalt-collection-band h2{font-size:20px}.cobalt-ladder-cell{font-size:10px;padding:3px 0}.cobalt-ladder-cell small{font-size:7px}.cobalt-not-found h1{font-size:36px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
.cobalt-collection-band{margin-top:0;margin-bottom:24px}.cobalt-home-intro h1{text-transform:uppercase;font-size:clamp(38px,5vw,70px);font-style:italic}.cobalt-play-panel{border-top:6px solid var(--accent)}.cobalt-game-card{border-bottom:4px solid var(--accent)}.cobalt-home-grid{padding-bottom:30px}@media(max-width:700px){.cobalt-home-grid{grid-template-columns:minmax(0,1fr);gap:24px}.cobalt-cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.cobalt-home-intro h1{font-size:42px}.cobalt-collection-band{flex-wrap:wrap}.cobalt-home-grid .cobalt-play-panel{width:100%;max-width:none}.cobalt-console-layout{grid-template-columns:1fr}.cobalt-card-copy{padding:12px}.cobalt-brand img{width:35px;height:35px}.cobalt-home-grid{padding-top:0}.cobalt-editorial-banner{font-size:9px;gap:20px}.cobalt-game-status{min-height:45px}}
.cobalt-tile-grid{display:grid;grid-template-columns:repeat(var(--cols),minmax(0,1fr));gap:3px;max-width:560px;margin:14px auto}.cobalt-tile{min-width:0;aspect-ratio:1;min-height:0;padding:3px;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:5px;font-size:clamp(12px,2vw,23px);cursor:pointer}.cobalt-tile[data-active="1"]{outline:3px solid var(--accent);outline-offset:-3px}.cobalt-tile[data-mark="1"]{background:var(--accent);color:var(--buttonink)}.cobalt-tile[data-mark="2"]{background:var(--bg);color:var(--muted)}.cobalt-tile[data-locked="1"]{font-weight:850;background:var(--soft)}.cobalt-game-help{font-size:13px;line-height:1.6;margin:12px 0;color:var(--muted)}.cobalt-entry{min-width:0;max-width:100%;border:1px solid var(--line);background:var(--bg);color:var(--ink);padding:10px;border-radius:8px;font:inherit}.cobalt-play-canvas{width:100%;max-width:650px;height:auto;display:block;margin:12px auto;border-radius:12px;background:#102132;touch-action:none}.cobalt-wide-scroll{overflow:auto;max-width:100%}.cobalt-tableau{display:grid;grid-template-columns:repeat(var(--cols),minmax(56px,1fr));gap:5px;min-width:450px;align-items:start;padding-bottom:8px}.cobalt-pile{position:relative;min-height:94px;border:1px dashed var(--line);border-radius:5px;background:var(--bg);padding:2px}.cobalt-card{display:block;position:relative;width:100%;height:76px;min-height:0;padding:4px;text-align:left;border:1px solid #b9b9b9;border-radius:5px;background:#faf7ef;color:#1d2431;font:700 16px/1.1 Georgia,serif;margin-top:-49px;cursor:pointer}.cobalt-card:first-child{margin-top:0}.cobalt-card[data-red="1"]{color:#b32b39}.cobalt-card[data-down="1"]{background:repeating-linear-gradient(45deg,#245b78,#245b78 4px,#30718b 4px,#30718b 8px);color:transparent}.cobalt-card[data-selected="1"]{outline:3px solid var(--accent);outline-offset:-3px}.cobalt-foundations{display:flex;flex-wrap:wrap;gap:6px;align-items:start;margin:12px 0}.cobalt-foundations .cobalt-pile{width:70px;min-height:80px}.cobalt-pile-label{display:block;font-size:10px;color:var(--muted);padding:3px}.cobalt-scores{display:grid;grid-template-columns:repeat(2,1fr);gap:6px;font-size:13px}.cobalt-clue-list{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}.cobalt-clue-list span{padding:5px 8px;background:var(--bg);border-radius:5px;font-size:13px}.cobalt-clue-list [data-found="1"]{text-decoration:line-through;opacity:.5}.cobalt-svg-board{width:100%;max-width:600px;display:block;margin:12px auto;touch-action:none}.cobalt-puzzle-cell{cursor:pointer;stroke:#83919f;stroke-width:.5}.cobalt-puzzle-text{font:16px system-ui;fill:#14222f;text-anchor:middle;dominant-baseline:middle;pointer-events:none}.cobalt-mini-board{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;border:2px solid var(--line);padding:3px}.cobalt-mini-board[data-allowed="1"]{border-color:var(--accent)}.cobalt-chess-cell{aspect-ratio:1;padding:0!important;font-family:"DejaVu Sans",serif;font-size:clamp(24px,4vw,48px)!important;line-height:1}.cobalt-chess-cell[data-square="light"]{background:#ede5d0;color:#141d25}.cobalt-chess-cell[data-square="dark"]{background:#719384;color:#141d25}.cobalt-chess-cell[data-side="w"]{color:white;text-shadow:0 1px 2px #222}.cobalt-chess-cell[data-legal="1"]{box-shadow:inset 0 0 0 4px #e6b74f}.cobalt-progress{width:100%;height:8px;border-radius:8px;background:var(--accent);margin:15px 0}
@media(max-width:450px){.cobalt-tableau{min-width:420px}.cobalt-card{height:65px;font-size:13px;margin-top:-43px}.cobalt-play-panel{overflow:hidden}.cobalt-game-controls{gap:5px}.cobalt-entry{font-size:14px}.cobalt-tile{border-radius:3px}}

.cobalt-pile-label + .cobalt-card { margin-top:0; }

.cobalt-crossword-clues{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:20px}.cobalt-clue-button{display:block;width:100%;text-align:left;white-space:normal;padding:9px 0;background:transparent;color:inherit;border:0;border-bottom:1px solid var(--line)}@media(max-width:600px){.cobalt-crossword-clues{grid-template-columns:1fr}}

/* Mobile navigation and shared call-to-action presentation. */
.cobalt-header { position: relative; gap: 20px; }
.cobalt-brand { min-width: 0; }
.cobalt-brand > span { overflow-wrap: anywhere; }
.cobalt-nav { align-items: center; flex-wrap: wrap; }
.cobalt-menu-button {
  display: none; align-items: center; justify-content: center; flex: 0 0 44px;
  width: 44px; height: 44px; padding: 10px; border: 1px solid var(--line);
  border-radius: 12px; background: var(--surface); color: var(--ink); cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.cobalt-menu-button svg { display: block; flex-shrink: 0; }
.cobalt-menu-button .cobalt-menu-close { display: none; }
.cobalt-menu-button[aria-expanded="true"] .cobalt-menu-open { display: none; }
.cobalt-menu-button[aria-expanded="true"] .cobalt-menu-close { display: block; }
.cobalt-menu-button:focus-visible, .cobalt-jump-button:focus-visible {
  outline: 3px solid var(--accent); outline-offset: 5px;
}
.cobalt-rules-column { min-width: 0; }
.cobalt-rules-cta { margin-top: 22px; padding: 0 10px 10px; display: flex; justify-content: center; }
.cobalt-jump-button {
  position: relative; isolation: isolate; display: inline-grid; vertical-align: middle;
  max-width: 100%; border: 0; border-radius: 999px; text-decoration: none !important;
  color: var(--buttonink) !important; line-height: 1.3; cursor: pointer;
  overflow: visible; text-align: center; flex-shrink: 0;
}
.cobalt-jump-button::before, .cobalt-jump-button::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  border: 2px solid var(--accent); opacity: 0; pointer-events: none;
  animation: cobalt-jump-ripple 3.2s ease-out infinite;
}
.cobalt-jump-button::after { animation-delay: 1.6s; }
.cobalt-jump-face {
  position: relative; z-index: 1; overflow: hidden; display: flex; justify-content: center; align-items: center;
  gap: 10px; padding: 13px 23px; min-height: 46px; border-radius: inherit;
  color: var(--buttonink); background: var(--accent);
  background: linear-gradient(115deg, var(--accent), color-mix(in srgb, var(--accent) 82%, var(--ink)));
  box-shadow: 0 5px 18px color-mix(in srgb, var(--accent) 26%, transparent);
  font: 750 14px/1.4 ui-sans-serif, system-ui, sans-serif;
  transition: filter .2s ease, box-shadow .2s ease;
}
.cobalt-jump-face::after {
  content: ""; position: absolute; z-index: 0; top: -60%; bottom: -60%; left: -80%; width: 48%;
  background: linear-gradient(105deg, transparent, rgba(255,255,255,.55), transparent);
  transform: skewX(-22deg); pointer-events: none;
  animation: cobalt-jump-shine 4.8s ease-in-out infinite;
}
.cobalt-jump-label { position: relative; z-index: 1; white-space: normal; overflow-wrap: anywhere; }
.cobalt-jump-arrow { position: relative; z-index: 1; flex: 0 0 20px; }
.cobalt-jump-button:hover .cobalt-jump-face { filter: brightness(1.08); box-shadow: 0 6px 24px color-mix(in srgb, var(--accent) 40%, transparent); }
.cobalt-nav .cobalt-jump-button { max-width: 260px; margin-left: 8px; }
.cobalt-nav .cobalt-jump-face { font-size: 12px; padding: 11px 17px; min-height: 42px; }
.cobalt-rules-cta .cobalt-jump-button { width: 100%; }
.cobalt-floating-cta {
  position: fixed; z-index: 80; left: 24px; right: 24px;
  bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  display: flex; justify-content: center; align-items: center; pointer-events: none;
}
.cobalt-floating-cta .cobalt-jump-button { width: max-content; max-width: min(480px, 100%); pointer-events: auto; }
.cobalt-floating-cta .cobalt-jump-face { min-height: 52px; padding: 14px 28px; font-size: 15px; }
body[data-floating-cta="1"] { padding-bottom: calc(110px + env(safe-area-inset-bottom, 0px)); }
body[data-input-focus="1"] .cobalt-floating-cta { visibility: hidden; pointer-events: none; }
@keyframes cobalt-jump-ripple {
  0% { transform: scale(1); opacity: .52; }
  75%, 100% { transform: scale(1.12, 1.48); opacity: 0; }
}
@keyframes cobalt-jump-shine {
  0%, 48% { left: -80%; }
  78%, 100% { left: 145%; }
}
@media (max-width: 1024px) {
  .cobalt-header { flex-wrap: wrap; align-items: center; gap: 12px; }
  .cobalt-brand { flex: 1; }
  .cobalt-menu-button { display: inline-flex; margin-left: auto; }
  .cobalt-nav { display: none; flex: 0 0 100%; width: 100%; padding: 16px 0 4px; margin: 0; border-top: 1px solid var(--line); }
  .cobalt-nav[data-open="1"] { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 8px; }
  .cobalt-nav > a:not([data-role="jump-cta"]) {
    display: block; padding: 12px 15px; border: 1px solid var(--line); border-radius: 10px;
    background: var(--surface); color: var(--ink); font-size: 14px; text-align: left;
  }
  .cobalt-nav > a[aria-current="page"] { color: var(--accent); border-color: var(--accent); }
  .cobalt-nav .cobalt-jump-button { grid-column: 1 / -1; justify-self: center; width: min(320px, calc(100% - 20px)); max-width: none; margin: 12px 0 6px; }
  .cobalt-nav .cobalt-jump-face { font-size: 14px; min-height: 46px; }
}
@media (prefers-reduced-motion: reduce) {
  .cobalt-jump-button::before, .cobalt-jump-button::after, .cobalt-jump-face::after { animation: none; display: none; }
  .cobalt-jump-face { transition: none; }
}

/* Keep the fixed control reachable above the safe-area inset. */
.cobalt-sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* Player notes: cobalt-arena; separate layout from game/detail columns. */
.cobalt-home-notes{margin:3rem 0;padding:clamp(20px,3vw,36px);border:1px solid var(--line);border-radius:var(--radius,18px);background:var(--surface);color:var(--ink)}
.cobalt-home-notes h2{font-size:clamp(22px,2.5vw,30px);line-height:1.2;margin:0 0 20px}
.cobalt-home-notes h3{font-size:19px;line-height:1.3;margin:8px 0}
.cobalt-home-notes p{font-size:15px;line-height:1.7;margin:8px 0;max-width:65ch}
.cobalt-home-notes header{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:12px}
.cobalt-home-notes .cobalt-note-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.cobalt-note-label{font-size:12px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--accent)}
.cobalt-information-section{margin:0 0 1.6rem} .cobalt-information-section h2{font-size:1.3rem} 
.cobalt-note-cards article{border-left:4px solid var(--accent);padding-left:18px}
@media(max-width:700px){ .cobalt-home-notes .cobalt-note-cards,.cobalt-home-notes .cobalt-console-steps,.cobalt-home-notes ul,.cobalt-sunset-pause,.cobalt-sunset-notes-body{grid-template-columns:1fr} .cobalt-home-notes li,.cobalt-table-note{grid-template-columns:1fr;gap:8px} .cobalt-home-notes header{display:block} }