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var(--ink-rule);border-radius:var(--radius);background:var(--paper-raised)}.tool-btn{min-width:calc(var(--tap-target) + 12px)}.puzzle-actions{display:flex;gap:var(--space-2);flex-wrap:wrap;align-items:center}.hint-panel{border:1px solid var(--ink-rule);border-left:4px solid var(--accent);background:var(--accent-soft);border-radius:var(--radius);padding:var(--space-3);font-size:calc(.9rem * var(--text-scale))}.feedback-banner{border:1px solid var(--ink-rule);border-left:4px solid var(--danger);background:var(--danger-soft);border-radius:var(--radius);padding:var(--space-3);font-size:calc(.92rem * var(--text-scale))}.feedback-banner--neutral{border-left-color:var(--accent-2);background:var(--accent-2-soft)}.completion{text-align:center}.completion__image{display:inline-block;border:2px solid var(--ink-rule-strong);background:var(--cell-bg);padding:4px;margin:0 auto var(--space-4);border-radius:var(--radius)}.completion__image svg{display:block;image-rendering:pixelated}.completion__title{font-family:var(--font-serif);font-size:calc(1.6rem * var(--text-scale));margin:0 0 var(--space-1)}.chapter-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:var(--space-3);list-style:none;margin:0;padding:0}.chapter-card{display:block;border:1px solid var(--ink-rule);border-radius:var(--radius);background:var(--paper-raised);padding:var(--space-3);text-decoration:none;color:inherit}.chapter-card:hover{border-color:var(--ink-rule-strong);background:var(--paper-sunken)}.chapter-card[data-locked=true]{opacity:.62}.chapter-card__head{display:flex;align-items:baseline;justify-content:space-between;gap:var(--space-2);margin-bottom:var(--space-1)}.chapter-card__number{font-family:var(--font-serif);font-size:calc(1.5rem * var(--text-scale));line-height:1;color:var(--ink-faint);font-variant-numeric:tabular-nums}.level-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(126px,1fr));gap:var(--space-2);list-style:none;margin:0;padding:0}.level-tile{display:flex;flex-direction:column;gap:2px;border:1px solid var(--ink-rule);border-radius:var(--radius);background:var(--paper-raised);padding:var(--space-2);text-decoration:none;color:inherit;min-height:78px;text-align:left;font:inherit;cursor:pointer}.level-tile:hover:not([disabled]){border-color:var(--ink-rule-strong);background:var(--paper-sunken)}.level-tile[disabled]{cursor:not-allowed;opacity:.55;background:var(--paper)}.level-tile[data-milestone=true]{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}.level-tile[data-state=completed]{background:var(--success-soft);border-color:var(--success)}.level-tile[data-state=in-progress]{border-color:var(--accent-2);background:var(--accent-2-soft)}.level-tile__num{font-family:var(--font-serif);font-size:calc(1.16rem * var(--text-scale));font-variant-numeric:tabular-nums;display:flex;align-items:center;gap:var(--space-1)}.level-tile__meta{font-size:calc(.74rem * var(--text-scale));color:var(--ink-faint);display:flex;flex-wrap:wrap;gap:0 var(--space-1)}.level-tile__status{font-size:calc(.74rem * var(--text-scale));font-weight:600}@media(max-width:720px){.puzzle-stage{flex-direction:column}.puzzle-board{justify-content:flex-start}.puzzle-aside{width:100%;flex-direction:row;align-items:flex-start;gap:var(--space-2)}.puzzle-aside .minimap{flex:1 1 auto;min-width:0}.puzzle-aside .zoom-stack{flex:0 0 auto;display:flex;flex-direction:column;gap:var(--space-1)}.app-main.is-puzzle{padding-bottom:var(--space-2)}}@media(max-height:480px)and (orientation:landscape){.app-header{padding-top:2px;padding-bottom:2px}.puzzle-topbar h1{font-size:calc(.95rem * var(--text-scale))}.puzzle-stage{flex-direction:row;flex-wrap:nowrap}.puzzle-aside{width:150px;flex-direction:column}.app-footer{display:none}}@media(min-width:1100px){.puzzle-aside{width:210px}}