.solo-shell{width:min(650px,calc(100% - 32px));margin:50px auto}.solo-shell>h1{font-size:42px;margin-bottom:12px}.solo-shell>.muted{font-size:13px}.muted{color:var(--muted)}.solo-tabs{display:flex;gap:10px;margin:28px 0}.solo-tabs button[aria-pressed=true]{background:var(--blue);color:#fff}.solo-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.solo-heading h2{font-size:32px;margin:0}.solo-heading label{font-size:12px;color:var(--muted)}select{font:inherit;padding:10px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);max-width:100%}.score-strip{display:flex;align-items:center;gap:22px;margin:22px 0;font-size:12px;color:var(--muted);flex-wrap:wrap}.score-strip strong{font-size:24px;color:var(--ink);font-variant-numeric:tabular-nums;margin:0 5px}.score-strip .button{margin-left:auto}.mine-scroll{max-width:100%;overflow:auto;padding:4px}.mine-nine{display:grid;grid-template-columns:repeat(9,1fr);width:min(100%,414px)}.mine-sixteen{display:grid;grid-template-columns:repeat(16,32px);width:512px}.mine-cell{aspect-ratio:1;border:1px solid var(--line);background:#e7edf3;min-width:0;padding:0;font-size:17px;font-weight:650;color:#b34259;user-select:none;-webkit-user-select:none;touch-action:pan-x pan-y}.mine-cell.opened{background:var(--bg);color:var(--ink)}.mine-cell:disabled{opacity:1;cursor:default}.mine-cell[data-number="1"]{color:#266fac}.mine-cell[data-number="2"]{color:#438452}.mine-cell[data-number="3"]{color:#b14253}.mine-cell[data-number="4"]{color:#775595}.mine-cell.exploded{background:#f8dce2}.solo-tools{margin-top:18px}.solo-tools p,.solo-shell section>p{font-size:13px}.solo-result{font-size:17px!important;color:var(--blue);min-height:26px}.solo-footnote{font-size:11px;color:var(--muted);line-height:1.8;border-top:1px solid var(--line);padding-top:24px;margin-top:30px}.solo-tools .button[aria-pressed=true]{background:var(--blue);color:#fff}#merge-board{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding:10px;background:#dce3e9;border-radius:20px;max-width:450px;touch-action:none;user-select:none}.number-tile{aspect-ratio:1;display:grid;place-items:center;border-radius:12px;background:#edf1f5;font-size:clamp(24px,6vw,42px);font-weight:650;color:#425667;font-variant-numeric:tabular-nums}.number-tile[data-value="0"]{background:#cad4de}.number-tile[data-value="4"]{background:#e5e8db}.number-tile[data-value="8"]{background:#edc999;color:#634a31}.number-tile[data-value="16"]{background:#e9b887}.number-tile[data-value="32"]{background:#d88c73;color:#fff}.number-tile[data-value="64"]{background:#bf6f60;color:#fff}.number-tile[data-value="128"],.number-tile[data-value="256"]{background:#dab84c;color:#fff;font-size:clamp(22px,5vw,36px)}.number-tile[data-value="512"],.number-tile[data-value="1024"],.number-tile[data-value="2048"]{background:#bd9525;color:#fff;font-size:clamp(19px,4.5vw,32px)}.direction-pad{display:flex;gap:10px;margin:20px 0}.direction-pad button{min-width:54px;font-size:22px;padding:10px}.solo-shell section[hidden]{display:none!important}@media(max-width:430px){.solo-shell{margin:28px auto}.solo-shell>h1{font-size:34px}.solo-heading{align-items:start;flex-direction:column}.solo-heading h2{font-size:28px}.score-strip{gap:10px}.score-strip .button{padding:10px 14px;font-size:12px}.number-tile{border-radius:8px}#merge-board{gap:7px;padding:7px;border-radius:14px}.nav .brand{font-size:16px}.nav .text-link{font-size:11px}}