/* AI_TUTOR_MATH_ADVANCED_UPLOAD4_CSS_V1 */
.tm-u4{font-family:system-ui,sans-serif;border:2px solid #334155;border-radius:16px;padding:16px;background:#fff;max-width:900px;margin:10px auto}
.tm-u4 header{display:flex;justify-content:space-between;gap:12px;font-size:18px}
.tm-u4-problem{font-size:26px;font-weight:800;padding:18px 0}
.tm-u4-stage{min-height:210px;border-radius:14px;background:#f8fafc;padding:16px}
.tm-u4-inputs{display:flex;flex-wrap:wrap;gap:12px;align-items:end;padding-top:14px}
.tm-u4-inputs label{font-weight:700;display:grid;gap:5px}
.tm-u4-inputs input{font-size:20px;padding:10px;border:2px solid #64748b;border-radius:10px;max-width:180px}
.tm-u4-check{font-size:18px;font-weight:800;padding:12px 18px;border:0;border-radius:10px;background:#166534;color:#fff;cursor:pointer}
.tm-u4-feedback{font-weight:800;font-size:18px;padding-top:12px;min-height:28px}
.tm-u4-balance{display:grid;grid-template-columns:1fr auto 1fr;gap:18px;align-items:center;text-align:center;font-size:34px;font-weight:800;padding:45px 20px;border-bottom:8px solid #475569}
.tm-u4-svg{display:block;width:100%;max-height:220px}.tm-u4-svg rect{fill:#dbeafe;stroke:#1e3a8a;stroke-width:4}.tm-u4-svg text{font-size:18px;fill:#0f172a}
.tm-u4-bars{height:170px;display:flex;align-items:end;justify-content:center;gap:16px}.tm-u4-bars div{height:150px;display:flex;flex-direction:column;justify-content:end;align-items:center;min-width:40px}.tm-u4-bars span{display:block;width:34px;background:#475569;border-radius:5px 5px 0 0}.tm-u4-money{font-size:110px;text-align:center;font-weight:900}
@media(max-width:620px){.tm-u4-problem{font-size:22px}.tm-u4-balance{font-size:25px}.tm-u4-inputs{display:grid}.tm-u4-inputs input{max-width:none;width:100%;box-sizing:border-box}}