.guide{grid-template-columns:96px 1fr;align-items:center;gap:12px;margin-bottom:16px;padding:12px;display:grid}.guide-img{border-radius:var(--radius-sm);object-fit:cover;background:#fff;width:96px;height:96px}.guide-label{margin:0;font-weight:800}.guide-note{color:var(--ink-muted);margin:2px 0 0;font-size:13px}.guide-diagram{background:#222;border-radius:8px;width:auto;max-width:100%;height:48px;margin-top:8px;padding:4px 8px}.letter-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;display:grid}@media (width>=520px){.letter-grid{grid-template-columns:repeat(8,minmax(0,1fr))}}.letter{aspect-ratio:1/1.15;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);color:var(--accent-ink);overflow-wrap:anywhere;text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:4px;min-width:0;padding:4px;font-size:13px;font-weight:800;transition:transform .12s,background .12s;display:flex;position:relative}.letter img{object-fit:contain;width:30px;height:30px}.letter.active{background:var(--brand);color:#fff;transform:scale(1.05)}.letter.selected:not(.active){border-color:var(--brand);box-shadow:0 0 0 2px var(--brand-soft)}.letter.locked img{opacity:.55}.letter .dot{background:currentColor;border-radius:50%;width:6px;height:6px;position:absolute;top:4px;right:6px}.letter .lock{font-size:10px;position:absolute;bottom:3px;right:5px}.guide.sticky{top:calc(var(--stick-top,56px) + 8px);z-index:3;box-shadow:0 -8px 0 8px var(--surface-alt), var(--shadow);position:sticky}