.mobile-nav .nav-action{min-height:30px;display:inline-flex;align-items:center;justify-content:center;padding:0 12px;border:1px solid rgba(59,130,246,.18);border-radius:999px;background:#fffffff0;color:var(--brand-primary);font-size:12px;font-weight:var(--fw-semibold);letter-spacing:0;line-height:1;white-space:nowrap;box-shadow:0 4px 12px #2563eb1f;cursor:pointer}.mobile-nav .nav-action:disabled{opacity:.56;cursor:not-allowed;box-shadow:none}.mobile-content{display:flex;flex-direction:column;overflow:hidden;padding-bottom:0;background:radial-gradient(circle at top left,rgba(80,171,255,.18),transparent 44%),linear-gradient(180deg,#edf8ff,#f6f8fb 24% 100%)}.grading-page{display:flex;flex:1;min-height:0;flex-direction:column}.grading-scroll{flex:1;min-height:0;overflow-y:auto;padding:10px 12px 18px}.guard-card{border-radius:18px;padding:18px 16px;border:1px dashed #bfd7ef;background:#ffffffe6;color:#475569;font-size:13px;line-height:1.8}.question-stream{margin-top:12px;display:flex;flex-direction:column;gap:12px}.page-section{display:flex;flex-direction:column;gap:10px}.page-divider{padding:0 2px;color:#64748b;font-size:12px;line-height:1.4;font-weight:var(--fw-medium)}.question-card{border-radius:18px;border:1px solid rgba(226,232,240,.92);background:#fffffff7;box-shadow:0 8px 24px #0f172a0d;padding:14px 14px 16px}.question-index{display:inline-flex;align-items:center;justify-content:center;min-width:54px;height:26px;padding:0 10px;border-radius:999px;background:#e9f3ff;color:#2563eb;font-size:12px;font-weight:var(--fw-semibold)}.question-title{margin-top:12px;color:#0f172a;font-size:15px;line-height:1.6;font-weight:var(--fw-semibold)}.question-passage{margin-top:8px;color:#475569;font-size:13px;line-height:1.7;white-space:pre-wrap}.question-passage.is-collapsed{display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.summary-toggle{margin-top:6px;border:none;background:none;padding:0;color:var(--brand-primary);font-size:12px;cursor:pointer}.card-block{margin-top:12px;border-radius:14px;border:1px solid #eef2f7;padding:12px;background:#fff}.card-block+.card-block{margin-top:10px}.card-title{color:#111827;font-size:14px;line-height:1.55;font-weight:var(--fw-semibold)}.type-label{margin-top:4px;color:#64748b;font-size:12px}.grading-item{margin-top:10px;padding-top:10px;border-top:1px solid #eef2f7}.grading-item:first-of-type{margin-top:0;padding-top:0;border-top:none}.item-top{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}.item-top.no-label{justify-content:flex-end}.item-label{color:#374151;font-size:13px;line-height:1.5;font-weight:var(--fw-medium)}.item-controls{display:flex;align-items:center;gap:6px;flex-shrink:0}.item-warning{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:50%;background:#fff7ed;border:1px solid #fdba74;color:#c2410c;font-size:12px;font-weight:var(--fw-bold);cursor:default}.ai-chip{min-height:24px;display:inline-flex;align-items:center;border-radius:999px;border:1px solid #cbd5e1;background:#f8fafc;color:#475569;font-size:11px;line-height:1;padding:5px 10px}.ai-chip.is-ai{border-color:#bfdbfe;background:#eff6ff;color:#2563eb}.teacher-reference{margin-top:10px;display:inline-flex;align-items:center;min-height:24px;border-radius:999px;border:1px solid #bbf7d0;background:#f0fdf4;color:#15803d;font-size:11px;line-height:1;padding:5px 10px}.mode-switch{display:inline-flex;overflow:hidden;border-radius:8px;border:1px solid var(--brand-primary)}.mode-btn{border:none;background:#fff;color:var(--brand-primary);font-size:11px;padding:5px 9px;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;margin-top:10px}.judge-panel.show,.score-panel.show{display:block}.judge-line,.score-line{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.judge-title,.score-title{color:#64748b;font-size:13px}.judge-group{display:inline-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;border-color:#2563eb;color:#fff}.judge-btn.is-active.source-student{background:#ea580c;border-color:#ea580c;color:#fff}.score-stepper{display:inline-flex;align-items:center;overflow:hidden;border-radius:8px;border:1px solid #d1d5db;background:#fff}.score-stepper.source-ai{border-color:#93c5fd}.score-stepper.source-student{border-color:#fdba74}.score-step-btn{width:28px;height:30px;border:none;background:#f8fafc;color:#475569;cursor:pointer}.score-input{width:48px;height:30px;border:none;outline:none;text-align:center;font-size:13px}.score-hint{color:#94a3b8;font-size:12px}.readonly-line{margin-top:10px;padding:10px 12px;border-radius:12px;background:#f8fafc;color:#475569;font-size:12px;line-height:1.65}.readonly-line.final{background:#f0fdf4;color:#166534}.readonly-line.processing{display:flex;align-items:center;gap:8px;background:#eff6ff;color:#1d4ed8}.loading-spinner{width:14px;height:14px;border-radius:50%;border:2px solid #bfdbfe;border-top-color:#2563eb;flex-shrink:0;animation:grading-spin .78s linear infinite}@keyframes grading-spin{to{transform:rotate(360deg)}}.readonly-compare{margin-top:10px;display:flex;flex-direction:column;gap:8px}.compare-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 12px;border-radius:12px;font-size:12px;line-height:1.6}.compare-row-ai{border:1px solid #dbe4ee;background:#f8fafc;color:#475569}.compare-row-student{border:1px solid #fdba74;background:#fff7ed;color:#c2410c}.compare-label{font-weight:var(--fw-semibold);flex-shrink:0}.compare-value{text-align:right}.ref-label,.analysis-label{display:inline-flex;align-items:center;margin-top:10px;margin-bottom:6px;font-size:13px}.ref-label{color:var(--brand-primary)}.analysis-label{color:#0f766e}.ref-answer{border-radius:10px;background:#eff6ff;color:#1d4ed8;padding:9px 10px;font-size:13px;line-height:1.6}.analysis-content{border-radius:10px;background:#f0fdfa;color:#0f172a;padding:9px 10px;font-size:13px;line-height:1.7}.grading-footer{gap:10px;background:#fffffff5;border-top:1px solid rgba(226,232,240,.95);flex-shrink:0;position:relative;z-index:6}.footer-btn{min-width:0;border:none;border-radius:999px;height:44px;font-size:14px;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:1.2;background:var(--brand-primary);color:#fff}.footer-btn:disabled{cursor:not-allowed;opacity:1}.footer-btn.secondary:disabled{border-color:#cbd5e1;color:#94a3b8;background:#f8fafc}.toast{position:absolute;left:50%;top:62px;bottom:auto;transform:translate(-50%) translateY(-8px);background:#fffffff5;color:#1d4ed8;border:1px solid rgba(147,197,253,.9);box-shadow:0 10px 24px #2563eb1f;max-width:calc(100% - 32px);border-radius:14px;box-sizing:border-box;font-size:12px;line-height:1.45;font-weight:var(--fw-semibold);text-align:center;padding:9px 14px;white-space:normal;word-break:break-word;opacity:0;transition:all .22s ease;pointer-events:none;z-index:20}.toast.show{opacity:1;transform:translate(-50%) translateY(0)}