#playground{color-scheme:light;height:100%;min-height:0;color:#30283b;padding:12px}.merge-card{height:100%;min-height:0;max-width:740px;margin:0 auto;display:grid;grid-template-rows:auto auto minmax(0,1fr) auto;gap:12px}.merge-heading{display:flex;justify-content:space-between;align-items:center;gap:12px}.merge-heading h1{font-size:24px;line-height:1.15;letter-spacing:-.6px;margin:0}.merge-heading p{font-size:11px;line-height:1.3;margin:5px 0 0;color:#756b80}#merge-info{width:44px;height:44px;flex:none;border:1px solid #ddd6e5;border-radius:50%;background:#fff;color:#625270;font-size:19px;font-weight:600;padding:0}#merge-info.storage-warning{border-color:#af644d;box-shadow:0 0 0 2px #af644d22}.merge-stats{display:grid;grid-template-columns:1fr 1.2fr 1fr .8fr;gap:10px;align-items:start}.merge-stats>div{min-width:0}.merge-stats span{display:block;color:#756b80;font-size:10px;line-height:1.3;min-height:2.6em}.merge-stats strong{display:block;font-size:21px;line-height:1.2;font-variant-numeric:tabular-nums;overflow-wrap:anywhere;margin-top:3px}.merge-next strong{background:#eae4f0;color:#58416e;border-radius:8px;display:inline-block;min-width:36px;padding:0 6px;text-align:center}.merge-stage{position:relative;min-width:0;min-height:0;display:flex;align-items:center;justify-content:center}.merge-board{flex:none;direction:ltr;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-template-rows:repeat(4,minmax(0,1fr));gap:6px;background:#e7e3ec;border:1px solid #dad3e2;padding:6px;border-radius:16px;touch-action:none;user-select:none;-webkit-user-select:none;outline-offset:3px;overscroll-behavior:contain}.merge-board:focus-visible{outline:3px solid #6f5989}.merge-cell{border-radius:10px;display:flex;align-items:center;justify-content:center;min-width:0;min-height:0;background:#f3f1f6;color:#30283b;font-size:var(--tile-size,28px);font-weight:650;font-variant-numeric:tabular-nums;letter-spacing:-.8px}.merge-cell.filled{background:hsl(268 22% calc(96% - var(--tile-tone)*6%))}.merge-cell.high{color:#fff}.merge-cell.long{font-size:var(--long-tile-size,18px)}.merge-cell.spawned{animation:merge-appear .16s ease-out}.merge-cell.merged{animation:merge-pop .18s ease-out}@keyframes merge-appear{0%{opacity:.35;transform:scale(.82)}}@keyframes merge-pop{50%{transform:scale(1.07)}}.merge-announcement:not(.ended){position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.merge-announcement.ended{position:absolute;bottom:8px;left:8px;right:8px;max-width:480px;margin:auto;padding:12px;background:#fffef5f5;border:1px solid #dad3e2;border-radius:10px;font-size:13px;text-align:center;line-height:1.5;color:#453b56}.merge-controls{display:flex;justify-content:center;align-items:stretch;gap:12px}.merge-history{display:flex;gap:6px;min-width:0}.merge-controls .merge-history button{margin:0;width:auto;min-width:64px;max-width:110px;padding:8px 10px;font-size:12px;overflow-wrap:anywhere;min-height:44px;background:#fff;color:#625270;border:1px solid #ddd6e5;border-radius:12px}.merge-directions{direction:ltr;display:flex;justify-content:center;gap:8px}.merge-directions button{width:44px;height:44px;padding:0;border:1px solid #ddd6e5;border-radius:12px;background:#f8f6fa;color:#453b56;font-size:24px}.merge-directions button:hover{background:#ece6f1}.merge-dialog{position:fixed;inset:0;margin:auto;box-sizing:border-box;width:min(500px,calc(100% - 32px));max-height:calc(var(--visible-height,100vh) - 32px - var(--safe-top,0px) - var(--safe-bottom,0px));padding:24px;border:1px solid #ddd6e5;border-radius:20px;background:#fff;color:#30283b;overflow:auto;overscroll-behavior:contain;box-shadow:0 20px 80px #30283b30}.merge-dialog::backdrop{background:#30283b77;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.merge-dialog h2{font-size:21px;margin:0;line-height:1.4}.merge-dialog p{font-size:13px;line-height:1.6;color:#756b80}.merge-dialog .fine{font-size:12px}.merge-dialog .secondary,.merge-dialog .primary{width:100%;min-height:44px;margin-top:14px;border-radius:10px;padding:10px 12px;font:inherit;font-size:13px}.merge-dialog .primary{background:#493957;color:#fff;border:1px solid #493957}.merge-dialog .secondary{background:#f5f2f8;color:#493957;border:1px solid #e4deea}.merge-dialog label{display:block;margin:18px 0 7px;font-size:12px}.merge-dialog select{display:block;width:100%;min-height:44px;padding:10px;border:1px solid #ddd6e5;border-radius:10px;font:inherit;color:inherit;background:#fff}.merge-actions{display:flex;gap:10px}.merge-actions button{flex:1;min-width:0}.merge-dialog pre{white-space:pre-wrap;overflow-wrap:anywhere;font-size:12px}.merge-dialog .text-link{display:inline-block;margin-top:14px;font-size:13px;color:#604774}.merge-demo{display:flex;gap:10px;align-items:center;justify-content:center;margin:24px 0;direction:ltr}.merge-demo span{display:grid;place-items:center;width:48px;height:48px;border-radius:12px;background:#eee9f3;color:#453b56;font-size:24px;font-weight:600}.merge-demo b{color:#a396af;font-weight:400}#merge-goal{color:#786487}.merge-dialog button:focus-visible,#merge-info:focus-visible,.merge-directions button:focus-visible{outline:3px solid #6f5989;outline-offset:2px}@media(max-width:360px){#playground{padding:10px 8px}.merge-card{gap:8px}.merge-heading h1{font-size:22px}.merge-stats{gap:6px}.merge-stats strong{font-size:18px}.merge-controls{gap:6px}.merge-directions{gap:3px}.merge-history{gap:4px}.merge-controls .merge-history button{padding:4px;min-width:44px;max-width:44px;width:44px;font-size:10px}}@media(min-width:500px)and (max-height:540px){.merge-card{max-width:900px;grid-template-columns:minmax(0,1fr) 210px;grid-template-rows:auto minmax(0,1fr) auto;column-gap:20px;row-gap:10px}.merge-heading{grid-column:2;grid-row:1}.merge-heading h1{font-size:20px}.merge-stats{grid-column:2;grid-row:2;grid-template-columns:1fr 1fr;align-self:center;gap:10px}.merge-stats span{min-height:0}.merge-stats strong{font-size:19px}.merge-stage{grid-column:1;grid-row:1 / 4}.merge-controls{grid-column:2;grid-row:3;flex-direction:column;gap:7px}.merge-controls .merge-history{width:100%}.merge-controls .merge-history button{flex:1;max-width:none}.merge-directions{gap:8px}.merge-directions button{width:44px}}@media(min-width:500px)and (max-height:400px){#playground{padding:6px}.merge-card{grid-template-columns:minmax(0,1fr) 300px;column-gap:12px;row-gap:4px}.merge-heading{min-width:0;gap:8px}.merge-heading h1{font-size:18px}.merge-heading p{display:none}.merge-stats{grid-template-columns:repeat(4,minmax(0,1fr));gap:4px}.merge-stats span{font-size:9px;min-height:2.6em;overflow-wrap:anywhere}.merge-stats strong{font-size:17px;margin-top:2px}.merge-controls{flex-direction:row;gap:6px}.merge-controls .merge-history{width:auto;gap:4px}.merge-controls .merge-history button{min-width:46px;max-width:46px;width:46px;padding:3px;font-size:10px}.merge-directions{gap:4px}}@media(prefers-reduced-motion:reduce){.merge-cell{animation:none!important}}.merge-dialog:not([open]){display:none}.merge-dialog.merge-fallback[open]{display:block;z-index:21;height:max-content;top:16px;bottom:auto}.merge-shade{position:fixed;inset:0;background:#30283b77;z-index:20}#merge-confirm.merge-fallback[open]{z-index:23}#merge-confirm.merge-fallback[open]:before{content:none}.merge-confirm-shade{z-index:22}