.mobile-nav .nav-action{color:var(--text-primary);font-size:15px;letter-spacing:1px}.viewer-main{flex:1;position:relative;overflow:hidden;background:#e8e8e8}.viewer-wrap{position:absolute;inset:0 0 52px;background:#e8e8e8;overflow:hidden;transition:bottom .3s cubic-bezier(.4,0,.2,1)}.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;overflow-x:hidden}.paper-line{margin-bottom:8px}.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}.paper-sub-title{color:#0f172a;font-weight:var(--fw-semibold);margin-bottom:8px}.paper-question-area{position:relative;margin-bottom:24px;padding:4px}.empty-hint{margin-top:40px;text-align:center;color:var(--text-muted);font-size:14px}.page-arrow{position:absolute;top:50%;width:32px;height:32px;margin-top:-16px;border:none;border-radius:50%;background:#00000047;color:#fff;cursor:pointer;z-index:3}.page-arrow.left{left:8px}.page-arrow.right{right:8px}.hotzone{position:absolute;border-radius:8px;border:2px dashed transparent;background:transparent;cursor:pointer;transition:all .2s}.hotzone:hover{background:#3b82f614}.hotzone.active{border-color:#3b82f680;background:#3b82f61f}.zone-tag{position:absolute;left:-2px;top:-2px;background:var(--brand-primary);color:#fff;font-size:11px;border-radius:8px 0 6px;padding:2px 8px;display:none}.hotzone.active .zone-tag{display:inline-block}.viewer-tools{position:absolute;left:0;right:0;bottom:0;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;transition:bottom .3s cubic-bezier(.4,0,.2,1)}.tool-btn{border:none;background:none;color:#111827;font-size:14px;cursor:pointer;padding:4px}.tool-group{display:flex;gap:14px;align-items:center}.result-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;transform:translateY(100%);transition:transform .3s cubic-bezier(.4,0,.2,1);z-index:5;display:flex;flex-direction:column}.result-panel.show{transform:translateY(0)}.viewer-main.panel-open .viewer-wrap{bottom:calc(55% + 52px)}.viewer-main.panel-open .viewer-tools{bottom:55%}.panel-header{height:52px;border-bottom:1px solid #f0f0f0;display:flex;align-items:center;justify-content:space-between;padding:0 14px;flex-shrink:0}.panel-title{font-size:16px;font-weight:var(--fw-semibold);color:#111827}.wrong-filter{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:#111827;user-select:none}.wrong-filter input{width:18px;height:18px;accent-color:var(--brand-primary);cursor:pointer}.panel-body{overflow-y:auto;padding:12px 14px 16px}.result-empty{text-align:center;color:var(--text-muted);font-size:13px;padding-top:24px}.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:8px}.type-label.summary-type{margin-top:8px;margin-bottom:0}.result-item{border-top:1px solid #f0f0f0;padding-top:10px;margin-top:10px}.result-item:first-of-type{border-top:none;margin-top:0;padding-top:0}.item-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:6px}.item-head.no-label{justify-content:flex-end}.item-label{font-size:13px;color:#334155;font-weight:var(--fw-medium)}.status-tag{border-radius:999px;font-size:11px;padding:2px 8px;border:1px solid transparent}.status-correct{background:#ecfdf3;border-color:#86efac;color:#166534}.status-half{background:#eff6ff;border-color:#93c5fd;color:#1d4ed8}.status-wrong{background:#fff1f2;border-color:#fda4af;color:#be123c}.result-meta{font-size:12px;color:var(--text-secondary);display:flex;flex-wrap:wrap;gap:6px 12px}.ref-answer{margin-top:8px;background:#eff6ff;color:#1e40af;border-radius:8px;padding:8px 10px;font-size:13px}