.shell.svelte-1nvjut6{max-width:580px;margin:0 auto;padding:1.5rem 1rem;font-family:var(--font-sans, system-ui, sans-serif)}.loading.svelte-1nvjut6{text-align:center;padding:3rem;color:var(--color-text-secondary, #888);font-size:15px}.card.svelte-1nvjut6{background:var(--color-background-primary, #fff);border:.5px solid var(--color-border-tertiary, rgba(0,0,0,.12));border-radius:12px;padding:1.75rem 2rem}.done-card.svelte-1nvjut6{text-align:center;padding:3rem 2rem}.done-icon.svelte-1nvjut6{font-size:48px;margin-bottom:1rem}.done-title.svelte-1nvjut6{font-size:22px;font-weight:500;margin:0 0 .5rem;color:var(--color-text-primary, #111)}.done-sub.svelte-1nvjut6{font-size:15px;color:var(--color-text-secondary, #555);margin:0 0 1.5rem}.progress-bar.svelte-1nvjut6{height:3px;background:var(--color-border-tertiary, rgba(0,0,0,.1));border-radius:2px;margin-bottom:1.5rem;overflow:hidden}.progress-fill.svelte-1nvjut6{height:100%;background:#1d9e75;border-radius:2px;transition:width .4s ease}.meta-row.svelte-1nvjut6{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.25rem}.badge.svelte-1nvjut6{font-size:11px;font-weight:500;letter-spacing:.05em;text-transform:uppercase;padding:3px 10px;border-radius:20px;background:var(--color-background-secondary, #f5f5f5);color:var(--color-text-secondary, #555);border:.5px solid var(--color-border-tertiary, rgba(0,0,0,.1))}.question-label.svelte-1nvjut6{font-size:14px;color:var(--color-text-secondary, #666);margin:0 0 .25rem}.question-math.svelte-1nvjut6{min-height:48px;margin-bottom:1.5rem;font-size:20px}.field-label.svelte-1nvjut6{display:block;font-size:12px;color:var(--color-text-secondary, #888);margin-bottom:6px;text-transform:uppercase;letter-spacing:.04em}.preview-label.svelte-1nvjut6{margin-top:1.1rem}.answer-input.svelte-1nvjut6{width:100%;box-sizing:border-box;font-family:var(--font-mono, monospace);font-size:15px;padding:10px 12px;background:var(--color-background-secondary, #f7f7f5);border:.5px solid var(--color-border-secondary, rgba(0,0,0,.2));border-radius:8px;color:var(--color-text-primary, #111);outline:none;transition:border-color .15s,box-shadow .15s}.answer-input.svelte-1nvjut6:focus{border-color:#1d9e75;box-shadow:0 0 0 2px #1d9e7526}.answer-input.disabled.svelte-1nvjut6{opacity:.6;cursor:not-allowed}.hint-text.svelte-1nvjut6{font-size:12px;color:var(--color-text-tertiary, #aaa);font-family:var(--font-mono, monospace);margin:5px 0 0}.preview-box.svelte-1nvjut6{min-height:52px;padding:10px 14px;border-radius:8px;background:var(--color-background-secondary, #f7f7f5);border:.5px solid var(--color-border-tertiary, rgba(0,0,0,.1));font-size:16px;display:flex;align-items:center}.preview-error.svelte-1nvjut6{border-color:var(--color-border-warning, rgba(180,120,0,.3))}.placeholder-text.svelte-1nvjut6{font-size:13px;color:var(--color-text-tertiary, #bbb)}.btn-row.svelte-1nvjut6{display:flex;gap:10px;margin-top:1.25rem}.btn.svelte-1nvjut6{padding:9px 20px;border-radius:8px;border:.5px solid var(--color-border-secondary, rgba(0,0,0,.2));background:transparent;color:var(--color-text-primary, #111);font-size:14px;cursor:pointer;transition:background .15s,transform .1s}.btn.svelte-1nvjut6:hover{background:var(--color-background-secondary, #f5f5f5)}.btn.svelte-1nvjut6:active{transform:scale(.98)}.btn.svelte-1nvjut6:disabled{opacity:.4;cursor:not-allowed}.btn-primary.svelte-1nvjut6{background:#1d9e75;color:#fff;border-color:#1d9e75;font-weight:500}.btn-primary.svelte-1nvjut6:hover{background:#0f6e56;border-color:#0f6e56}.feedback.svelte-1nvjut6{margin-top:1.25rem;padding:12px 16px;border-radius:8px;font-size:14px;line-height:1.6;border-left:3px solid transparent;background:var(--color-background-secondary, #f5f5f5);border-left-color:var(--color-border-secondary, rgba(0,0,0,.15));color:var(--color-text-secondary, #555)}.feedback.correct.svelte-1nvjut6{background:#e1f5ee;border-left-color:#1d9e75;color:#085041}.feedback.incorrect.svelte-1nvjut6{background:var(--color-background-danger, #fff0f0);border-left-color:var(--color-border-danger, rgba(200,0,0,.3));color:var(--color-text-danger, #8b1a1a)}.answer-reveal.svelte-1nvjut6{margin-top:8px;font-size:14px;color:var(--color-text-secondary, #666)}