.mobile-nav{border-bottom:none;padding-bottom:6px}.top-header{background:var(--bg-card);padding:12px var(--mobile-padding) 6px;display:flex;justify-content:center}.segmented-control{display:inline-flex;border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden;background:var(--bg-card)}.segment-btn{padding:6px 18px;font-size:var(--font-sm);color:var(--text-secondary);background:var(--bg-card);border-right:1px solid var(--border);cursor:pointer}.segment-btn.active{background:var(--bg-page);color:var(--text-primary);font-weight:var(--fw-medium);box-shadow:none}.segment-btn:last-child{border-right:none}.mobile-content{padding-top:8px;padding-bottom:134px}.content-panel{display:flex;flex-direction:column;gap:10px}.sub-tab-bar{display:flex;justify-content:space-between;align-items:center;background:var(--bg-page);padding:12px var(--mobile-padding) 10px;gap:8px}.sub-tab-left{display:flex;gap:8px;flex-wrap:wrap}.sub-tab{font-size:var(--font-sm);color:var(--text-secondary);cursor:pointer;padding:6px 12px;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--bg-card)}.sub-tab.active{color:var(--text-primary);font-weight:var(--fw-medium);background:var(--bg-page)}.sub-tab.active:after{display:none}.sub-tab-right{display:flex;align-items:center;gap:14px}.sub-tab-icon{display:inline-flex;align-items:center;gap:4px;font-size:12px;color:var(--text-secondary);cursor:pointer;padding:6px 12px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md)}.sub-tab-icon svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.book-card{background:var(--bg-card);border-radius:var(--radius-md);margin:0 var(--mobile-padding);padding:16px;box-shadow:var(--shadow-card);display:flex;gap:12px}.book-cover{width:92px;height:128px;border-radius:10px;flex-shrink:0;padding:10px 8px;box-sizing:border-box;position:relative;color:#1f2937;display:flex;flex-direction:column;justify-content:space-between;box-shadow:0 6px 18px #0f172a24}.cover-yuwen{background:linear-gradient(165deg,#d9f7df,#8bd0a4)}.cover-shuxue{background:linear-gradient(165deg,#dff1ff,#8dc0ff)}.cover-yingyu{background:linear-gradient(165deg,#ffe3ec,#ffb1c8)}.book-cover-badge{font-size:10px;line-height:1.2;color:#1f2937c2}.book-cover-title{font-size:18px;font-weight:var(--fw-bold);line-height:1.2}.book-cover-sub{font-size:10px;line-height:1.3;color:#1f2937ad}.book-recommend-tag{position:absolute;left:0;right:0;bottom:0;height:24px;display:flex;align-items:center;justify-content:center;background:linear-gradient(90deg,#fb923c,#f97316);color:#fff;border-radius:0 0 10px 10px;font-size:10px;font-weight:var(--fw-medium)}.book-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:4px}.book-title{font-size:16px;font-weight:var(--fw-semibold);line-height:1.45;color:var(--text-primary)}.book-publisher,.book-edition,.book-date,.book-summary{font-size:12px;line-height:1.45;color:var(--text-secondary)}.book-summary{color:var(--text-muted)}.book-actions{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-top:6px}.btn-pill{height:34px;padding:0 16px;border:none;border-radius:17px;font-size:13px;font-weight:var(--fw-medium);cursor:pointer}.btn-primary{background:var(--brand-primary);color:#fff}.btn-secondary{background:#eef3ff;color:var(--brand-primary)}.btn-download{min-height:44px;padding:0 14px;border:1px solid #cddcff;border-radius:22px;background:#f4f8ff;color:var(--brand-primary);display:inline-flex;align-items:center;justify-content:center;gap:6px;font-size:13px;font-weight:var(--fw-medium);cursor:pointer;box-sizing:border-box}.btn-download svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.filter-bar{display:flex;gap:8px;padding:0 var(--mobile-padding);overflow-x:auto}.filter-chip{flex-shrink:0;padding:7px 14px;border-radius:18px;background:var(--bg-card);border:1px solid #dfe4ee;color:var(--text-secondary);font-size:13px;cursor:pointer}.filter-chip.active{background:var(--brand-primary);border-color:var(--brand-primary);color:#fff}.personal-card{background:var(--bg-card);border-radius:var(--radius-md);margin:0 var(--mobile-padding);padding:16px;box-shadow:var(--shadow-card)}.personal-download-row{margin-top:12px}.personal-download-row .btn-download{width:100%}.personal-card-body{display:flex;gap:12px}.personal-card-body:not(:last-child){margin-bottom:12px}.personal-cover{width:64px;height:84px;border-radius:12px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:var(--fw-bold);color:#111827b8}.subject-yuwen{background:linear-gradient(145deg,#f3e8ff,#c4b5fd)}.subject-shuxue{background:linear-gradient(145deg,#f3f4f6,#d1d5db)}.subject-yingyu{background:linear-gradient(145deg,#fde68a,#fb923c)}.personal-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:4px}.personal-info-head{display:flex;gap:8px;align-items:flex-start}.personal-title{flex:1;font-size:15px;font-weight:var(--fw-semibold);line-height:1.45;color:var(--text-primary)}.personal-sub,.personal-remark,.personal-meta{font-size:12px;line-height:1.45;color:var(--text-secondary)}.personal-remark{color:var(--text-muted);display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;text-overflow:ellipsis}.personal-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px}.personal-grade{color:var(--success);font-weight:var(--fw-semibold)}.status-tag{flex-shrink:0;padding:2px 8px;border-radius:999px;font-size:10px;line-height:1.6}.status-pending-submit{background:#e8f1ff;color:#165dff}.status-pending-grade{background:#f3f4f6;color:#4b5563}.status-done{background:#e7f8ef;color:#00a870}.status-ai-graded{background:#fff7e8;color:#ff7d00}.personal-actions{display:flex;align-items:center;border-top:1px dashed #e5e7eb;padding-top:10px}.info-tag{display:inline-block;padding:2px 6px;border-radius:4px;background:#e8f1ff;color:#165dff;font-size:11px;line-height:1.5}.personal-actions.single .action-divider{display:none}.action-btn{flex:1;text-align:center;font-size:14px;color:var(--brand-primary);cursor:pointer}.action-divider{width:1px;height:16px;background:#e5e7eb}.floating-action-bar{position:absolute;left:0;right:0;bottom:80px;padding:10px var(--mobile-padding);background:var(--bg-card);box-shadow:0 -2px 12px #0f172a0f;display:flex;gap:10px;z-index:10}.btn-outline{flex:1;height:42px;border-radius:21px;border:1px solid var(--brand-primary);background:#fff;color:var(--brand-primary);font-size:14px;cursor:pointer}.btn-solid{flex:1.35;height:42px;border-radius:21px;border:none;background:var(--brand-primary);color:#fff;font-size:14px;font-weight:var(--fw-medium);display:inline-flex;align-items:center;justify-content:center;gap:6px;cursor:pointer}.btn-solid svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.toast{position:absolute;left:50%;bottom:148px;transform:translate(-50%);min-width:120px;max-width:270px;padding:10px 14px;border-radius:12px;background:#0f172ad1;color:#fff;font-size:12px;text-align:center;opacity:0;pointer-events:none;transition:opacity .2s;z-index:30}.toast.show{opacity:1}