.field-layout { grid-template-columns: minmax(0, 620px) minmax(220px, 1fr); gap: 40px; }
.field-page .lab-header { min-height: 78px; }
.field-page .lab-main { padding-top: 22px; }
.field-page .game-heading { margin-bottom: 18px; }
.field-page .level-route { margin-bottom: 10px; }
.field-page .level-brief { padding: 9px 0 14px; margin-bottom: 18px; }
.field-board-wrap { position: relative; }
.field-board-wrap .board-frame { max-width: 420px; }
.field-board-wrap .row-labels { grid-template-rows: repeat(var(--rows), minmax(0, 1fr)); }
.field-board-wrap .matrix { border-width: 1px; gap: 2px; background: var(--surface); }
.field-board-wrap .tile { border: 1px solid var(--line); border-radius: 2px; font-size: clamp(15px, 2.4vw, 23px); }
.field-board-wrap .tile.selected { box-shadow: none; }
.field-board-wrap .tile:focus-visible { outline-offset: -3px; }
.field-board-wrap .tile .flag-icon { width: 52%; height: 52%; }
.field-board-wrap .flag-icon svg { width: 100%; height: 100%; }
.field-board-wrap[data-paused="true"] .matrix { visibility: hidden; }
.field-overlay { position: absolute; inset: 24px 0 0 25px; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 10px; background: var(--surface); border: 1px solid var(--line); border-radius: 4px; padding: 20px; text-align: center; }
.field-overlay h2 { font-size: 20px; margin: 0; }
.field-overlay p { font-size: 12px; color: var(--muted); max-width: 280px; margin: 0 0 4px; }
.flag-life { position: absolute; bottom: 1px; left: 1px; right: 1px; height: 3px; background: var(--line); pointer-events: none; }
.flag-life > span { height: 100%; display: block; background: var(--accent); width: var(--life); }
.tile.expiring { color: var(--amber); }
.tile.expiring .flag-life > span { background: var(--amber); }
.field-notice { min-height: 20px; margin: 10px 0 0 25px; color: var(--amber); font-size: 12px; }
.field-rules { padding-left: 17px; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.9; }
.field-rules li + li { margin-top: 8px; }
.field-current { color: var(--muted); font-size: 12px; min-height: 42px; }
.field-lifetimes { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 12px; color: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.field-controls-help { font-size: 11px; color: var(--muted); line-height: 1.9; }
.field-start-actions { display: flex; gap: 8px; align-items: center; }
.field-restart-body { padding: 24px; }
.field-restart-body h2 { margin: 0 0 8px; font-size: 19px; }
.field-restart-body p { color: var(--muted); font-size: 13px; }
@media (max-width: 850px) { .field-layout { grid-template-columns: minmax(0, 1fr) 210px; gap: 24px; } }
@media (max-width: 690px) {
  .field-page .lab-main { padding-top: 18px; }
  .field-layout { display: block; }
  .field-layout .sidebar { grid-template-columns: 1fr; }
  .field-overlay { left: 20px; padding: 12px; }
  .field-notice { margin-left: 20px; }
  .field-board-wrap .matrix { gap: 1px; }
  .field-board-wrap .tile.entry-cell::after { inset: 2px; }
  .field-board-wrap .tile { font-size: 17px; }
  .field-start-actions { gap: 4px; }
}