.practical-columns{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:32px;display:grid}.practical-columns>*{min-width:0}.payload-preview{white-space:pre-wrap;overflow-wrap:anywhere;background:var(--paper);border:1px solid var(--line);border-radius:12px;max-height:240px;padding:16px;font-size:12px;overflow:auto}.qr-output{text-align:center;background:var(--purple);border-radius:18px;padding:24px}.qr-paper{background:#fff;border-radius:10px;place-items:center;min-height:230px;margin:20px 0;padding:8px;display:grid}.qr-paper canvas{width:100%;max-width:360px;height:auto;image-rendering:pixelated}.qr-output .actions{justify-content:center}.speech-controls{padding:14px 0}.speech-state{background:var(--blue);overflow-wrap:anywhere;border-radius:12px;padding:16px}.new-tool select{max-width:100%}.new-tool input[type=color]{height:44px}.math-result{background:var(--mint);overflow-wrap:anywhere;border:1px solid #bad5c1;border-radius:18px;min-height:280px;padding:30px}.large-result{font-variant-numeric:tabular-nums;margin:18px 0;font-size:clamp(28px,4vw,44px);font-weight:750;line-height:1.35}.coin-stage{perspective:900px;background:radial-gradient(at 50% 85%,#e8dab8 0,#0000 42%);place-items:center;height:310px;display:grid}#coin-lift{transform-style:preserve-3d}.piyo-coin{width:180px;height:180px;transform-style:preserve-3d;position:relative;transition-property:none!important}.coin-face{backface-visibility:hidden;background:radial-gradient(circle at 30% 20%,#fff0a8,#e9b33e);border:9px double #a27824;border-radius:50%;flex-direction:column;justify-content:center;align-items:center;display:flex;position:absolute;inset:0;box-shadow:0 5px #ad7c23}.coin-heads{transform:translateZ(3px)}.coin-face svg{width:108px;height:108px}.coin-face span{letter-spacing:2px;font-size:12px;font-weight:800}.coin-tails{transform:rotateY(180deg)translateZ(3px)}.coin-tails svg{fill:#fff4bf;stroke:#966a22;stroke-width:3px}.coin-statistics{flex-wrap:wrap;justify-content:center;gap:20px;margin:25px 0 0;display:flex}.coin-statistics strong{font-size:22px;display:block}.coin-history{flex-wrap:wrap;gap:9px;padding:0;list-style:none;display:flex}.coin-history li{background:var(--yellow);border-radius:20px;padding:9px 14px}.kana-settings{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;display:grid}.kana-progress{text-align:center;font-size:14px}.kana-card{background:var(--sand);width:min(100%,440px);min-height:285px;color:var(--ink);cursor:pointer;border:1px solid #ddcb9e;border-radius:24px;flex-direction:column;justify-content:center;align-items:center;gap:16px;margin:20px auto;display:flex;box-shadow:5px 7px #eee5d3}.kana-card[aria-pressed=true]{background:var(--mint);border-color:#bad5c1}.kana-card>span{font-size:100px;line-height:1.35}.kana-card small{font-size:13px}.kana-actions{justify-content:center}.kana-audio{text-align:center;margin:24px 0}.quiz-glyph{text-align:center;font-size:100px;line-height:1.5}.quiz-options{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;max-width:520px;margin:16px auto;display:grid}.quiz-options button{white-space:normal;min-height:60px;font-size:20px}.new-tool input,.new-tool textarea{min-width:0}@media (width<=767px){.practical-columns{grid-template-columns:1fr;gap:24px}.qr-output,.math-result{padding:18px}.kana-settings{grid-template-columns:1fr;gap:0}.coin-stage{height:280px}.kana-card{min-height:240px}}