:root{color:#172033;background:#f7f8fb;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{margin:0}button{font:inherit}.app-shell{max-width:880px;margin:0 auto;padding:32px 20px}.app-header{margin-bottom:24px}.app-header h1{margin:0 0 8px;font-size:2rem}.app-header p{color:#4b5565;margin:0}.panel{background:#fff;border:1px solid #d9deea;border-radius:16px;padding:24px;box-shadow:0 10px 30px #0f172a0f}.meta-row{flex-wrap:wrap;gap:8px;margin-bottom:16px;display:flex}.badge{color:#32415f;background:#f4f6fb;border:1px solid #cfd6e6;border-radius:999px;padding:4px 10px;font-size:.85rem;display:inline-flex}.question-text{white-space:pre-wrap;font-size:1.1rem;line-height:1.7}.options{gap:12px;margin:20px 0;display:grid}.option-button{text-align:left;cursor:pointer;background:#fff;border:1px solid #cfd6e6;border-radius:12px;padding:14px 16px}.option-button:hover{background:#f4f6fb}.option-button.selected{background:#eef2ff;border-color:#334155}.feedback{background:#f8fafc;border:1px solid #d9deea;border-radius:12px;margin-top:16px;padding:16px}.actions{gap:12px;margin-top:20px;display:flex}.primary-button{color:#fff;cursor:pointer;background:#172033;border:0;border-radius:12px;padding:12px 16px}.secondary-button{color:#172033;cursor:pointer;background:#fff;border:1px solid #cfd6e6;border-radius:12px;padding:12px 16px}.muted{color:#64748b}.error{color:#991b1b}