.tm-exercise-practice{margin-top:30px;padding-top:26px;border-top:1px solid rgba(255,255,255,.18)}.tm-exercise-practice-header{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:18px}.tm-practice-mastery{min-width:180px;text-align:right}.tm-practice-mastery strong{display:block;font-size:24px}.tm-practice-mastery-track{height:7px;background:rgba(255,255,255,.18);border-radius:999px;overflow:hidden}.tm-practice-mastery-track span{display:block;height:100%;width:0;background:#fff}.tm-exercise-grid{display:grid;gap:20px}.tm-exercise-card{background:#fff;color:#172033;border-radius:18px;padding:22px;box-shadow:0 12px 30px rgba(0,0,0,.12)}.tm-exercise-card h3{margin:4px 0 10px}.tm-exercise-meta{display:flex;gap:8px;flex-wrap:wrap;font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.05em}.tm-exercise-prompt{color:#334155;line-height:1.7}.tm-exercise-editor-wrap{margin:16px 0}.tm-exercise-editor{width:100%;min-height:180px;resize:vertical;border:1px solid #cbd5e1;border-radius:12px;padding:14px;font:14px/1.55 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:#0f172a;color:#e2e8f0}.tm-cm6-shell{display:grid;grid-template-columns:42px 1fr;border:1px solid #334155;border-radius:12px;overflow:hidden;background:#0f172a}.tm-cm6-shell .tm-exercise-editor{border:0;border-radius:0;min-height:190px;outline:none}.tm-cm6-gutter{white-space:pre;text-align:right;padding:14px 9px;color:#64748b;background:#111827;font:14px/1.55 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;user-select:none}.tm-exercise-actions{display:flex;gap:10px;flex-wrap:wrap}.tm-exercise-actions button{border:0;border-radius:10px;padding:10px 14px;font-weight:800;cursor:pointer}.tm-exercise-check{background:#0b63f6;color:#fff}.tm-exercise-secondary{background:#e2e8f0;color:#172033}.tm-exercise-results{padding:0;margin:16px 0 0;list-style:none;display:grid;gap:8px}.tm-exercise-results li{padding:9px 11px;border-radius:9px;background:#f1f5f9}.tm-exercise-results .is-pass{background:#ecfdf5;color:#166534}.tm-exercise-results .is-fail{background:#fff1f2;color:#9f1239}.tm-exercise-help{margin-top:14px;padding:14px;border-radius:12px;background:#f8fafc;color:#334155}.tm-exercise-status{margin:12px 0 0;font-weight:700;color:#475569}.tm-exercise-updated{margin:8px 0;color:#b45309}.tm-exercise-solution pre{white-space:pre-wrap;overflow:auto;background:#0f172a;color:#e2e8f0;padding:14px;border-radius:10px}@media(max-width:720px){.tm-exercise-practice-header{display:block}.tm-practice-mastery{text-align:left;margin-top:10px}.tm-cm6-shell{grid-template-columns:34px 1fr}}