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(width<=560px){.snake{grid-template-columns:1fr}}.c4{justify-items:center;gap:10px;display:grid}.c4-seats{flex-wrap:wrap;justify-content:center;gap:10px;display:flex}.c4-seat{background:#f6f1e9;border-radius:999px;align-items:center;gap:8px;padding:6px 12px;display:flex}.c4-seat.turn{box-shadow:inset 0 0 0 2px var(--ink)}.c4-dot{border-radius:50%;width:16px;height:16px;display:inline-block}.c4-dot.red,.c4-cell.red{background:#e74c3c}.c4-dot.yellow,.c4-cell.yellow{background:#f1c40f}.c4-status{text-align:center;margin:0;font-weight:600}.c4-board{background:#2c5fd6;border-radius:14px;grid-template-columns:repeat(7,1fr);gap:6px;width:min(420px,100%);padding:10px;display:grid}.c4-cell{aspect-ratio:1;cursor:default;background:#dfe7f5;border:0;border-radius:50%;padding:0}.c4-cell:not(:disabled){cursor:pointer}.c4-cell.hover:not(.red):not(.yellow){background:#b9c9ec}.c4-cell.last{box-shadow:inset 0 0 0 3px #ffffffb3}.c4-cell.win{box-shadow:inset 0 0 0 4px #fff,0 0 10px #fff}.c4-actions{gap:8px;display:flex}.world2d{background:#e9ecef;position:absolute;inset:0;overflow:hidden}.world2d canvas{touch-action:none;width:100%;height:100%;display:block}.overlay2d{pointer-events:none;position:absolute;inset:0}.label2d{will-change:transform;visibility:hidden;position:absolute;top:0;left:0}.link.plain{color:var(--accent)}.card.help{background:#fff;gap:14px;width:min(520px,100%);max-height:calc(100dvh - 32px);overflow-y:auto}.card.help h2{margin:0;font-size:20px}.card.help section{border-top:1px solid #eee5d8;gap:6px;padding-top:10px;display:grid}.card.help h4{align-items:center;gap:6px;margin:0;font-size:13px;display:flex}.card.help .link{justify-self:start;font-size:13px}.help-lines{color:var(--muted);gap:5px;margin:0;padding:0;font-size:13px;list-style:none;display:grid}.help-lines li{align-items:baseline;gap:8px;display:flex}.keys{flex-shrink:0;gap:3px;display:inline-flex}kbd{font:inherit;color:var(--ink);white-space:nowrap;background:#fff;border:1px solid #e3dbcf;border-bottom-width:2px;border-radius:6px;padding:1px 6px;font-size:11px;font-weight:700}.tour{z-index:60;pointer-events:none;position:fixed;inset:0}.tour-dim{background:#1e181273;position:absolute;inset:0}.tour-spot{box-shadow:0 0 0 9999px #1e181273, 0 0 0 3px var(--accent);border-radius:14px;transition:left .25s,top .25s,width .25s,height .25s;position:absolute}.tour-card{width:min(340px,100vw - 32px);box-shadow:var(--shadow);pointer-events:auto;background:#fff;border-radius:16px;gap:10px;padding:16px 18px;display:grid;position:absolute}.tour-card h3{align-items:center;gap:8px;margin:0;font-size:16px;display:flex}.tour-card p{color:var(--ink);margin:0;font-size:14px;line-height:1.45}.tour-actions{align-items:center;gap:10px;display:flex}.tour-actions .muted{margin-right:auto}