.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-select-row{display:flex;gap:8px;padding:0 var(--mobile-padding)}.filter-select-wrap{position:relative;flex:1;min-width:0}.filter-select{width:100%;height:38px;border-radius:19px;border:1px solid #d9e2ef;background:#fff;color:#475569;font-size:14px;padding:0 12px;cursor:pointer;outline:none}.filter-select:focus{border-color:#3b82f6;box-shadow:0 0 0 2px #3b82f629}.personal-card{background:#fff;border:1px solid #e8edf5;border-radius:20px;margin:0 var(--mobile-padding);padding:16px;box-shadow:0 10px 24px #0f172a0f;display:flex;flex-direction:column;gap:14px}.personal-card-body{display:flex;gap:12px;align-items:flex-start}.personal-media{width:64px;flex-shrink:0;display:flex;flex-direction:column;align-items:center;gap:10px}.personal-cover{width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:var(--fw-bold);letter-spacing:1px;color:#0f172ac7;border:1px solid rgba(148,163,184,.16);box-shadow:inset 0 1px #ffffffb8}.subject-yuwen{background:linear-gradient(145deg,#fff7ed,#fde6bf)}.subject-shuxue{background:linear-gradient(145deg,#eef4ff,#d7e6ff)}.subject-yingyu{background:linear-gradient(145deg,#eefbf3,#cfeeda)}.personal-download-btn{min-height:30px;padding:0 10px;border:1px solid #dbe7fb;border-radius:999px;background:#f4f8ff;color:#2563eb;display:inline-flex;align-items:center;justify-content:center;gap:4px;font-size:12px;font-weight:var(--fw-medium);cursor:pointer;box-sizing:border-box;white-space:nowrap}.personal-download-btn svg{width:13px;height:13px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.personal-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:10px}.personal-info-head{display:flex;gap:8px;align-items:flex-start;justify-content:space-between}.personal-title{flex:1;font-size:16px;font-weight:var(--fw-semibold);line-height:1.45;color:var(--text-primary);display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;text-overflow:ellipsis}.personal-head-tags{flex-shrink:0;display:inline-flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:flex-end}.status-tag{flex-shrink:0;min-height:28px;padding:0 10px;border-radius:999px;border:1px solid transparent;font-size:12px;line-height:26px;background:#fff}.status-pending-submit{background:#fff7ed;border-color:#fed7aa;color:#c2410c}.status-pending-grade{background:#f8fafc;border-color:#d8e1ec;color:#526075}.status-graded{background:#eefbf3;border-color:#bde7cb;color:#0f9f61}.status-correction-submitted{background:#eff6ff;border-color:#bfdbfe;color:#1d4ed8}.feature-tag{display:inline-flex;align-items:center;min-height:26px;padding:0 10px;border-radius:999px;border:1px solid #bfdbfe;background:#eff6ff;color:#2563eb;font-size:12px;line-height:24px;font-weight:var(--fw-medium);white-space:nowrap}.personal-detail-panel{background:#f5f7fb;border-radius:16px;padding:12px;display:flex;flex-direction:column;gap:8px}.personal-detail-row{display:flex;gap:8px;align-items:flex-start;font-size:12px;line-height:1.6}.personal-detail-label{width:56px;flex-shrink:0;color:#7b8798}.personal-detail-value{flex:1;min-width:0;color:#334155}.personal-remark{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;text-overflow:ellipsis;color:#526075}.personal-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.personal-action-btn{min-height:44px;border-radius:14px;border:1px solid #dfe7f4;background:#f8fafc;color:#44556d;display:inline-flex;align-items:center;justify-content:center;padding:0 12px;font-size:14px;font-weight:var(--fw-medium);cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease;touch-action:manipulation}.personal-action-btn.primary{border-color:#3b82f6;background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;box-shadow:0 10px 18px #2563eb2e}.personal-action-btn:disabled{border-color:#d8e1ec;background:#eef2f7;color:#94a3b8;box-shadow:none;cursor:not-allowed}.personal-action-btn:active{transform:translateY(1px)}@media(prefers-reduced-motion:reduce){.personal-action-btn{transition:none}}.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}