body{background:var(--bg-page)}.mobile-nav{gap:8px}.mobile-nav .nav-title{text-align:left}.nav-action{color:var(--text-secondary);font-size:20px;line-height:1;letter-spacing:2px}.mobile-content{padding:12px var(--mobile-padding) 22px}.report-card{background:var(--bg-card);border-radius:14px;border:1px solid var(--border-light);box-shadow:var(--shadow-sm);margin-bottom:12px}.homework-card{padding:14px;display:flex;gap:12px}.subject-badge{width:44px;height:52px;flex-shrink:0;border-radius:10px;background:linear-gradient(135deg,#ecf4ff,#d7e8ff);color:var(--brand-primary);font-size:14px;font-weight:var(--fw-bold);display:flex;align-items:center;justify-content:center;letter-spacing:1px}.hw-main{min-width:0;flex:1}.hw-title{font-size:16px;line-height:1.35;font-weight:var(--fw-semibold);color:var(--text-primary);margin-bottom:6px}.hw-book{font-size:12px;color:var(--text-muted);margin-bottom:2px}.hw-line{display:flex;justify-content:space-between;gap:8px;font-size:12px;color:var(--text-secondary);line-height:1.6}.hw-line strong{font-weight:var(--fw-medium);color:var(--text-primary)}.hw-line .accent{color:var(--brand-primary);font-weight:var(--fw-semibold)}.summary-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:12px}.summary-col{background:#f7f9fc;border-radius:12px;padding:12px 10px;min-height:112px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center}.summary-value{font-size:32px;line-height:1;color:var(--brand-primary);font-weight:var(--fw-bold);margin-bottom:6px}.summary-label{font-size:12px;color:var(--text-muted);margin-bottom:8px}.summary-meta{font-size:12px;color:var(--text-secondary)}.summary-link{border:none;background:transparent;color:var(--brand-primary);font-size:12px;cursor:pointer;padding:0}.tabs-pill.report-tabs{margin:2px 0 10px;padding:4px}.tab-pill{border:none;background:transparent;line-height:1.2;font-size:13px}.search-wrap{margin-bottom:10px}.search-box input{height:36px}.tab-panel{display:none}.tab-panel.active{display:block;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.section-card{background:var(--bg-card);border:1px solid var(--border-light);border-radius:14px;box-shadow:var(--shadow-sm);padding:12px;margin-bottom:12px}.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.section-title{font-size:14px;font-weight:var(--fw-semibold);color:var(--text-primary);display:flex;align-items:center;gap:6px}.help-dot{width:16px;height:16px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:11px;color:#fff;background:var(--text-muted)}.ghost-select{border:1px solid var(--border);border-radius:16px;background:#fff;color:var(--text-secondary);font-size:12px;padding:5px 10px;cursor:pointer}.donut-wrap{display:flex;flex-direction:column;align-items:center}.donut-chart{width:188px;height:188px;position:relative}.donut-chart svg{width:100%;height:100%;transform:rotate(-90deg)}.donut-track{fill:none;stroke:#edf2f7;stroke-width:30}.donut-segment{fill:none;stroke-width:30;stroke-linecap:butt}.donut-center{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}.donut-rate{font-size:28px;line-height:1;font-weight:var(--fw-bold);color:var(--text-primary)}.donut-label{margin-top:5px;font-size:12px;color:var(--text-muted)}.legend-row{width:100%;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px;margin-top:8px}.legend-item{display:inline-flex;justify-content:center;align-items:center;gap:4px;font-size:12px;color:var(--text-secondary)}.legend-dot{width:8px;height:8px;border-radius:50%;display:inline-block}.radar-box{position:relative;padding-top:4px}#radarChart{width:100%;height:240px;display:block}.radar-grid{fill:none;stroke:#e5e9f1;stroke-width:1}.radar-axis{stroke:#e2e8f0;stroke-width:1}.radar-area{fill:#1b78f84d;stroke:#1b78f8;stroke-width:2}.radar-point{fill:#1b78f8;cursor:pointer}.radar-label{fill:var(--text-secondary);font-size:11px;text-anchor:middle}.radar-tooltip{position:absolute;min-width:112px;padding:8px 10px;border-radius:10px;background:#0f172ae0;color:#fff;font-size:12px;line-height:1.5;box-shadow:0 8px 18px #0f172a2e;transform:translate(-50%,-110%);pointer-events:none;display:none;z-index:4}.radar-tooltip.show{display:block}.top-wrong-list{display:flex;flex-direction:column;gap:10px}.top-wrong-row{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;padding:10px;border-radius:12px;background:#f8fbff;border:1px solid #eef3fb}.top-wrong-main{min-width:0}.top-wrong-title{font-size:13px;color:var(--text-primary);font-weight:var(--fw-medium);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.top-wrong-meta{margin-top:4px;font-size:11px;color:var(--text-muted)}.top-wrong-rate{font-size:18px;font-weight:var(--fw-bold);color:var(--danger);text-align:right}.top-wrong-rate span{display:block;margin-top:3px;font-size:10px;font-weight:var(--fw-regular);color:var(--text-muted)}.tool-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:10px}.tool-btn{border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--text-secondary);font-size:13px;padding:8px 10px;cursor:pointer;text-align:center}.error-card{background:#fff;border:1px solid var(--border-light);border-radius:12px;margin-bottom:10px;overflow:hidden}.error-body{padding:12px}.question-origin{border:1px dashed #d8deea;border-radius:10px;background:#fbfcff;padding:10px 10px 8px;margin-bottom:10px}.origin-head{color:var(--text-secondary);font-size:11px;margin-bottom:6px}.origin-line{font-size:14px;color:var(--text-primary);line-height:1.8}.origin-line ruby{ruby-position:over}.origin-line rt{font-size:10px;color:var(--text-muted)}.blank-box{display:inline-block;width:34px;height:20px;border:1px dashed #9aa7bd;border-radius:4px;vertical-align:middle;margin:0 3px}.error-meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-secondary)}.toggle-detail{border:none;background:transparent;color:var(--brand-primary);font-size:12px;cursor:pointer;padding:0}.error-detail{display:none;border-top:1px dashed #e5eaf3;background:#fcfdff;padding:10px 12px 12px}.error-card.open .error-detail{display:block}.detail-item{font-size:12px;color:var(--text-secondary);line-height:1.8}.detail-item strong{color:var(--text-primary)}.answer-val{color:var(--brand-primary);font-weight:var(--fw-semibold)}.level-stars{color:#f59e0b;letter-spacing:1px}.knowledge-tag{display:inline-flex;align-items:center;padding:2px 8px;border-radius:10px;background:#eef4ff;color:var(--brand-primary)}.empty-state{padding:32px 12px;border-radius:12px;border:1px dashed #d8deea;background:#fbfcff;text-align:center;color:var(--text-muted);font-size:13px}.student-card{background:#fff;border:1px solid var(--border-light);border-radius:12px;padding:12px;margin-bottom:10px}.student-name{font-size:16px;font-weight:var(--fw-semibold);color:var(--text-primary);margin-bottom:10px}.metric-pills{display:flex;gap:8px;margin-bottom:8px}.metric-pill{background:#f5f7fa;border-radius:999px;padding:5px 10px;font-size:12px;color:var(--text-primary)}.review-time{font-size:12px;color:var(--text-muted)}.student-actions{display:flex;gap:8px;margin-top:10px}.action-outline{flex:1;border:1px solid var(--border);border-radius:14px;background:#fff;color:var(--text-secondary);font-size:12px;line-height:28px;text-align:center;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;appearance:none;-webkit-appearance:none;padding:0 10px}.action-eval{border-color:#34a853;color:#2c9d47;font-weight:var(--fw-medium)}.student-card.pending{display:flex;flex-direction:column;justify-content:center;min-height:128px}.student-card.pending .pending-status{text-align:center;color:var(--text-muted);font-size:14px;margin-top:12px}.sheet-overlay{position:fixed;inset:0;background:#00000073;z-index:1000;display:none;align-items:flex-end;justify-content:center}.sheet-overlay.show{display:flex}.sheet{width:min(375px,100%);background:#fff;border-radius:16px 16px 0 0;padding-bottom:calc(env(safe-area-inset-bottom) + 10px);animation:slideUp .2s ease}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}.sheet-title{padding:14px 16px 10px;text-align:center;font-size:15px;font-weight:var(--fw-semibold);color:var(--text-primary);border-bottom:1px solid var(--border-light)}.sheet-items{max-height:360px;overflow-y:auto}.sheet-item{width:100%;border:none;background:#fff;font-size:15px;color:var(--text-primary);text-align:left;padding:14px 16px;border-bottom:1px solid #f3f5f9;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:12px}.sheet-item.active{color:var(--brand-primary);font-weight:var(--fw-semibold)}.sheet-mark{width:20px;height:20px;border:1px solid #cbd5e1;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;color:transparent;font-size:13px;font-style:normal;flex-shrink:0}.sheet-item.active .sheet-mark{background:var(--brand-primary);border-color:var(--brand-primary);color:#fff}.sheet-item.multi .sheet-mark{border-radius:5px}.sheet-footer{display:none;gap:12px;padding:12px 16px 0;border-top:1px solid #f3f5f9}.sheet-footer.show{display:flex}.sheet-footer button{flex:1;height:42px;border-radius:8px;font-size:15px;cursor:pointer}.sheet-reset{border:1px solid var(--border);color:var(--brand-primary);background:#fff}.sheet-confirm{border:none;color:#fff;background:var(--brand-primary)}.sheet-cancel{width:100%;border:none;background:#fff;font-size:16px;color:var(--text-secondary);text-align:center;padding:14px 12px;border-top:8px solid #f3f5f9;cursor:pointer}.toast{position:fixed;left:50%;top:45%;transform:translate(-50%,-50%);background:#000000bf;color:#fff;padding:9px 14px;border-radius:12px;font-size:13px;z-index:1200;opacity:0;pointer-events:none;transition:opacity .18s ease;white-space:nowrap}.toast.show{opacity:1}