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var(--transition-fast)}.pill-toggle button:hover{color:var(--text-secondary)}.pill-toggle button.active{background:var(--surface);color:var(--cyan);box-shadow:inset 0 2px 4px #0006,0 1px #ffffff0d}.bingo-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:var(--space-md);max-width:600px;margin:0 auto;padding:var(--space-md)}.bingo-cell{aspect-ratio:1;background:var(--surface);border:1px solid var(--border-subtle);border-radius:8px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:var(--space-sm);cursor:pointer;transition:all var(--transition-base);position:relative;overflow:hidden;transform:skew(-3deg);box-shadow:-3px 3px #0006,0 0 20px 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640px){.cell-term{font-size:var(--text-sm)}}.bingo-cell.free{background:var(--surface-elevated);border-color:var(--gold);box-shadow:-3px 3px #0006,0 0 25px #ffd70066}.star-icon{position:absolute;top:var(--space-xs);right:var(--space-xs);font-size:var(--text-sm);color:var(--gold);transform:skew(3deg)}.free-label{font-family:var(--font-display);font-size:var(--text-sm);font-weight:700;color:var(--gold);text-transform:uppercase;letter-spacing:.05em;transform:skew(3deg)}.win-banner{background:linear-gradient(135deg,#ff4b9f26,#ff4b9f4d);border:1px solid var(--pink);border-radius:var(--radius-lg);padding:var(--space-xl);text-align:center;box-shadow:0 0 20px #ff4b9f4d;animation:pulse-glow 2s ease-in-out infinite}@keyframes pulse-glow{0%,to{box-shadow:0 0 20px #ff4b9f4d}50%{box-shadow:0 0 40px #ff4b9f4d}}.win-banner h3{font-family:var(--font-display);font-size:var(--text-3xl);color:var(--pink);margin-bottom:var(--space-sm)}.win-banner 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a{color:var(--cyan);text-decoration:none;transition:opacity var(--transition-fast)}.page-footer a:hover{opacity:.8}.instruction-section{margin-bottom:var(--space-lg)}.instruction-section:last-child{margin-bottom:0}.instruction-section h3{color:var(--cyan);font-size:var(--text-base);margin:0 0 var(--space-sm);font-family:var(--font-display);font-weight:600}.instruction-section p{color:var(--text-tertiary);font-size:var(--text-sm);line-height:1.6;margin-bottom:var(--space-sm);opacity:.75}.shortcut-hint{display:flex;align-items:center;gap:var(--space-xs);font-size:var(--text-sm);color:var(--text-muted);margin-top:var(--space-sm)}@media (max-width: 768px){.display-lg,.page-header h1{font-size:var(--text-3xl)}.bingo-grid{gap:var(--space-sm)}.bingo-cell{font-size:var(--text-xs);padding:var(--space-xs);transform:skew(-2deg)}.cell-term{transform:skew(2deg)}.vocab-grid{--autogrid-min: 240px}}@media (max-width: 480px){.bingo-cell{font-size:calc(var(--text-xs) * 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rgba(0,240,255,.5)}.cell-term.svelte-sj7apd{font-family:var(--font-display);font-size:clamp(8px,2.5cqw,14px);font-weight:600;color:var(--text-secondary);line-height:1.2;letter-spacing:-.01em;transform:skew(3deg);transition:all var(--transition-base);word-break:break-word;hyphens:auto}.bingo-cell.free.svelte-sj7apd{background:var(--cyan)!important;border-color:#ffffff80;box-shadow:-3px 3px #00000080,0 0 40px #00f0ffcc,0 0 80px #00f0ff66,inset 0 0 30px #ffffff4d;z-index:10}.bingo-cell.free.svelte-sj7apd:before{background:linear-gradient(135deg,rgba(255,255,255,.4),transparent);opacity:.6}.bingo-cell.free.svelte-sj7apd:hover{transform:skew(-3deg) translateY(-2px) scale(1.05);box-shadow:-3px 5px #00000080,0 0 60px #00f0ff,0 0 100px #00f0ff99,inset 0 0 40px #fff6}.star-icon.svelte-sj7apd{position:absolute;top:4px;right:4px;font-size:var(--text-xs);color:#0b111bcc;transform:skew(3deg)}.free-label.svelte-sj7apd{font-family:var(--font-display);font-size:var(--text-sm);font-weight:800;color:var(--canvas);text-transform:uppercase;letter-spacing:.1em;transform:skew(3deg)}.vocab-card.svelte-1np6812{perspective:1000px;height:clamp(160px,40cqw,220px);cursor:pointer;animation:svelte-1np6812-cardReveal .3s ease-out;background:transparent;border:none;padding:0;width:100%;display:block;text-align:inherit;font:inherit}.vocab-card__inner.svelte-1np6812{position:relative;width:100%;height:100%;transition:transform .3s cubic-bezier(.16,1,.3,1);transform-style:preserve-3d;border-radius:var(--radius-lg, 12px)}.vocab-card.flipped.svelte-1np6812 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#00f0ff1a;backdrop-filter:blur(20px);position:relative;overflow:hidden;width:100%;max-width:100%;box-sizing:border-box}.sidebar-card[data-astro-cid-2fgmymcg]:before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(0,240,255,.3),transparent)}.sidebar-card[data-astro-cid-2fgmymcg] h2[data-astro-cid-2fgmymcg]{font-family:var(--font-display);font-size:var(--text-xl);color:var(--cyan);margin-bottom:var(--space-lg);display:flex;align-items:center;gap:var(--space-sm);text-shadow:0 0 20px rgba(0,240,255,.3)}.instruction-section[data-astro-cid-2fgmymcg]{margin-bottom:var(--space-xl);padding-bottom:var(--space-lg);border-bottom:1px solid rgba(0,240,255,.1)}.instruction-section[data-astro-cid-2fgmymcg]:last-child{margin-bottom:0;padding-bottom:0;border-bottom:none}.instruction-section[data-astro-cid-2fgmymcg] h3[data-astro-cid-2fgmymcg]{font-family:var(--font-display);font-size:var(--text-base);color:var(--cyan);margin:0 0 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