.mobile-nav .nav-action{color:var(--text-primary);font-size:15px;letter-spacing:1px}.grading-main{flex:1;position:relative;overflow:hidden;background:#e8e8e8}.viewer-wrap{position:absolute;top:0;left:0;right:0;bottom:calc(55% + 52px);overflow:hidden}.paper-canvas{position:absolute;inset:12px;border-radius:10px;background:linear-gradient(180deg,#fff,#f8fafc);border:1px solid #e2e8f0;padding:14px;color:#334155;font-size:13px;line-height:1.65;overflow-y:auto}.paper-title{font-weight:var(--fw-semibold);font-size:15px;margin-bottom:16px}.paper-question{position:relative;margin-bottom:22px;padding:4px}.paper-sub-title{color:#0f172a;font-weight:var(--fw-semibold);margin-bottom:6px}.page-arrow{position:absolute;top:50%;width:32px;height:32px;margin-top:-16px;border:none;border-radius:50%;background:#00000047;color:#fff;cursor:pointer}.page-arrow.left{left:8px}.page-arrow.right{right:8px}.page-arrow.is-disabled{opacity:.38;cursor:default}.viewer-tools{position:absolute;left:0;right:0;bottom:55%;height:52px;background:#ffffffe6;backdrop-filter:blur(4px);border-top:1px solid #f0f0f0;border-bottom:1px solid #f0f0f0;display:flex;align-items:center;justify-content:space-between;padding:0 12px;z-index:4}.tool-btn{border:none;background:none;color:#111827;font-size:14px;cursor:pointer;padding:4px}.tool-group{display:flex;gap:14px;align-items:center}.grading-panel{position:absolute;left:0;right:0;bottom:0;height:55%;background:#fff;border-radius:16px 16px 0 0;box-shadow:0 -6px 20px #0f172a29;z-index:5;display:flex;flex-direction:column}.panel-header{height:50px;border-bottom:1px solid #f0f0f0;display:flex;align-items:center;justify-content:space-between;padding:0 14px}.panel-title{font-size:16px;font-weight:var(--fw-semibold)}.panel-analysis-link{font-size:14px;color:var(--brand-primary);text-decoration:none}.panel-body{overflow-y:auto;padding:12px 14px 16px}.question-summary{margin-bottom:12px}.summary-title{font-size:15px;font-weight:var(--fw-semibold);color:#0f172a;margin-bottom:6px}.summary-passage{font-size:13px;color:var(--text-secondary);line-height:1.6}.question-summary.collapsed .summary-passage{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.summary-toggle{border:none;background:none;color:var(--brand-primary);font-size:13px;padding:0;margin-top:4px;cursor:pointer}.card-block{border:1px solid #f0f0f0;border-radius:10px;padding:12px;background:#fff;margin-bottom:10px}.card-title{font-size:14px;color:#111827;font-weight:var(--fw-semibold);margin-bottom:4px}.type-label{color:var(--text-muted);font-size:12px;margin-bottom:10px}.grading-item{border-top:1px solid #f0f0f0;padding-top:10px;margin-top:10px}.grading-item:first-of-type{border-top:none;margin-top:0;padding-top:0}.item-top{display:flex;justify-content:space-between;gap:8px;margin-bottom:8px}.item-label{color:#374151;font-size:13px;font-weight:var(--fw-medium)}.item-controls{display:flex;gap:6px;align-items:center}.ai-chip{border-radius:12px;border:1px solid #d1d5db;background:#f3f4f6;color:#6b7280;font-size:11px;padding:2px 8px;cursor:pointer}.ai-chip.is-ai{border-color:#93c5fd;background:#eff6ff;color:#2563eb}.mode-switch{border:1px solid var(--brand-primary);border-radius:6px;overflow:hidden;display:inline-flex}.mode-btn{border:none;background:#fff;color:var(--brand-primary);font-size:11px;padding:4px 8px;cursor:pointer}.mode-btn+.mode-btn{border-left:1px solid var(--brand-primary)}.mode-btn.active{background:var(--brand-primary);color:#fff}.judge-panel,.score-panel{display:none}.judge-panel.show,.score-panel.show{display:block}.judge-line,.score-line{display:flex;align-items:center;gap:8px}.judge-group{display:flex;gap:6px}.judge-btn{width:32px;height:32px;border-radius:8px;border:1px solid #d1d5db;background:#fff;color:#6b7280;cursor:pointer}.judge-btn.is-active.source-ai{background:#2563eb;color:#fff;border-color:#2563eb}.judge-btn.is-active.source-teacher{background:#16a34a;color:#fff;border-color:#16a34a}.score-stepper{border:1px solid #d1d5db;border-radius:8px;overflow:hidden;display:inline-flex;align-items:center;background:#fff}.score-stepper.source-ai{border-color:#93c5fd}.score-stepper.source-teacher{border-color:#86efac}.score-step-btn{width:28px;height:30px;border:none;background:#f8fafc;color:#4b5563;cursor:pointer}.score-input{width:48px;height:30px;border:none;text-align:center;font-size:13px;outline:none}.score-hint{color:var(--text-muted);font-size:12px}.ref-answer{margin-top:8px;background:#eff6ff;color:#1e40af;border-radius:8px;padding:8px 10px;font-size:13px}.grading-footer{gap:10px;background:#fff;border-top:1px solid var(--border-light);position:relative;z-index:6}.footer-btn{border-radius:22px;height:44px;border:none;font-size:15px;font-weight:var(--fw-medium);cursor:pointer}.footer-btn.secondary{flex:1;border:1px solid var(--brand-primary);color:var(--brand-primary);background:#fff}.footer-btn.primary{flex:1.5;background:var(--brand-primary);color:#fff}.inline-mark{display:inline-flex;justify-content:center;align-items:center;width:16px;height:16px;border-radius:50%;font-size:10px;margin-left:6px;vertical-align:text-bottom;font-weight:700}.inline-mark.correct{color:#22c55e;border:1px solid #22c55e;background:#f0fdf4}.inline-mark.wrong{color:#ef4444;border:1px solid #ef4444;background:#fef2f2}.inline-mark.half{color:#f59e0b;border:1px solid #f59e0b;background:#fffbeb}.student-correction{border-radius:12px;border:1px solid #bfdbfe;background:#eff6ff;color:#3b82f6;font-size:11px;padding:2px 8px;display:inline-flex;align-items:center;gap:4px}.student-correction .mark.half{color:#f59e0b;font-weight:700}.student-correction .mark.correct{color:#22c55e;font-weight:700}.student-correction .mark.wrong{color:#ef4444;font-weight:700}