.improvement-history{margin-top:12px;padding:12px;border-radius:14px;background:#f4f8f6;border:1px solid #dce9e3}.improvement-title{font-weight:800;color:#10243b;margin-bottom:5px}.attempt-sequence{color:#53666e;font-size:.92rem;line-height:1.9}.improvement-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin-top:9px}.improvement-summary span{background:#fff;border-radius:10px;padding:8px;text-align:center;font-size:.88rem}.up{color:#16704f!important}.down{color:#b3402f!important}.teacher-improve-mini{margin-top:5px;font-size:.78rem;display:flex;flex-direction:column;gap:2px}.teacher-improve-mini b{font-size:.8rem}.report-modal{position:fixed;inset:0;background:rgba(8,22,32,.62);z-index:1000;overflow:auto;padding:18px}.report-modal.hidden{display:none}.report-sheet{max-width:900px;margin:20px auto;background:#fbf7ee;border-radius:20px;padding:20px;box-shadow:0 25px 60px #0005}.report-actions{display:flex;gap:8px;justify-content:flex-start;margin-bottom:14px}.report-header{background:linear-gradient(135deg,#0e5c45,#10243b);color:#fff;border-radius:16px;padding:18px}.report-header h2{color:#fff;margin:0 0 5px}.report-summary{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:14px 0}.report-summary>div{background:#fff;border:1px solid #e6dec9;border-radius:14px;padding:13px;text-align:center}.report-summary span{display:block;color:#6b7b82;font-size:.86rem}.report-summary b{display:block;font-size:1.35rem;color:#0e5c45}.report-table-wrap{overflow:auto;background:#fff;border:1px solid #e6dec9;border-radius:14px}.report-table{min-width:680px}.report-note{margin-top:12px;color:#6b7b82;font-size:.9rem;background:#fff;padding:10px;border-radius:10px}.improvement-report{margin-top:4px}@media(max-width:700px){.improvement-summary{grid-template-columns:1fr}.report-summary{grid-template-columns:1fr 1fr}.report-sheet{padding:12px;margin:4px auto}.report-actions{position:sticky;top:0;background:#fbf7ee;padding:8px 0;z-index:2}}@media print{body *{visibility:hidden!important}.report-modal,.report-modal *{visibility:visible!important}.report-modal{position:absolute;inset:0;background:#fff;padding:0}.report-sheet{box-shadow:none;margin:0;max-width:none;border-radius:0}.report-actions{display:none!important}.report-table-wrap{overflow:visible}.report-table{min-width:0;width:100%}}