.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
    .page-title { display: flex; align-items: center; gap: 12px; }
    .page-title h1 { font-size: 1.75rem; font-weight: 700; }
    
    /* 试剂架卡片 */
    .shelf-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; margin-bottom: 32px; }
    
    .shelf-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 20px;
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .shelf-card:hover { border-color: var(--accent-primary); box-shadow: var(--shadow-md); }
    .shelf-card.dangerous { border-left: 4px solid var(--accent-danger); }
    .shelf-card.normal { border-left: 4px solid var(--accent-secondary); }
    
    .shelf-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
    .shelf-name { font-size: 1.1rem; font-weight: 600; }
    .shelf-type { padding: 2px 8px; border-radius: 10px; font-size: 0.75rem; }
    .shelf-type.dangerous { background: var(--accent-danger-light); color: var(--accent-danger); }
    .shelf-type.normal { background: var(--accent-secondary-light); color: var(--accent-secondary); }
    
    .shelf-info { display: flex; gap: 16px; color: var(--text-muted); font-size: 0.85rem; }
    .shelf-location { color: var(--text-secondary); }
    
    /* 试剂层视图 */
    .layer-view { display: none; }
    .layer-view.active { display: block; }
    
    .shelf-detail-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 24px;
      padding-bottom: 16px;
      border-bottom: 1px solid var(--border-color);
    }
    
    .layer-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }
    
    .layer-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      padding: 16px;
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .layer-card:hover { border-color: var(--accent-primary); }
    .layer-card.full { border-color: var(--accent-warning); }
    
    .layer-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
    .layer-number { font-weight: 600; }
    .layer-count { font-size: 0.8rem; color: var(--text-muted); }
    
    .layer-bar {
      height: 6px;
      background: var(--bg-tertiary);
      border-radius: 3px;
      overflow: hidden;
    }
    .layer-bar-fill { height: 100%; background: var(--accent-primary); transition: width 0.3s; }
    
    /* 试剂列表 */
    .reagent-list { margin-top: 24px; }
    
    .reagent-table { width: 100%; }
    .reagent-row { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr 100px; gap: 12px; padding: 12px; border-bottom: 1px solid var(--border-color); align-items: center; }
    .reagent-row:hover { background: var(--bg-card-hover); }
    .reagent-header { font-weight: 600; color: var(--text-secondary); font-size: 0.85rem; }
    
    .reagent-name { font-weight: 500; }
    .reagent-category { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border-radius: 10px; font-size: 0.75rem; }
    .reagent-expired { background: var(--accent-danger-light); color: var(--accent-danger); }
    .reagent-expiring { background: var(--accent-warning-light); color: var(--accent-warning); }
    
    .reagent-quantity { display: flex; align-items: center; gap: 8px; }
    .stock-btn { width: 24px; height: 24px; border-radius: 50%; border: none; cursor: pointer; font-size: 14px; display: flex; align-items: center; justify-content: center; }
    .stock-btn.minus { background: var(--accent-danger-light); color: var(--accent-danger); }
    .stock-btn.plus { background: var(--accent-secondary-light); color: var(--accent-secondary); }
    
    /* 智能放置建议 */
    .placement-advice { background: var(--bg-tertiary); border-radius: 12px; padding: 20px; margin: 20px 0; }
    .placement-advice h4 { margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
    .advice-item { display: flex; align-items: center; gap: 12px; padding: 12px; background: var(--bg-card); border-radius: 8px; margin-bottom: 8px; cursor: pointer; transition: all 0.2s; }
    .advice-item:hover { border: 1px solid var(--accent-primary); }
    .advice-item.selected { border: 2px solid var(--accent-primary); background: var(--accent-primary-light); }
    .advice-rank { font-size: 1.5rem; width: 40px; }
    .advice-content { flex: 1; }
    .advice-title { font-weight: 500; margin-bottom: 4px; }
    .advice-desc { font-size: 0.85rem; color: var(--text-muted); }
    .advice-warning { color: var(--accent-warning); font-size: 0.85rem; }
    .advice-ok { color: var(--accent-secondary); font-size: 0.85rem; }
    
    .category-selector { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
    .cat-btn { padding: 8px 16px; background: var(--bg-tertiary); border: 2px solid var(--border-color); border-radius: 8px; cursor: pointer; display: flex; align-items: center; gap: 6px; transition: all 0.2s; font-size: 0.9rem; }
    .cat-btn:hover { border-color: var(--accent-primary); }
    .cat-btn.active { border-color: var(--accent-primary); background: var(--accent-primary-light); }
    .cat-btn .icon { font-size: 1.2rem; }
    
    /* 警告标识 */
    .hazard-tags { display: flex; flex-wrap: wrap; gap: 4px; }
    .hazard-tag { padding: 2px 6px; border-radius: 4px; font-size: 0.7rem; background: var(--accent-danger-light); color: var(--accent-danger); }
    
    .empty-state { text-align: center; padding: 60px 20px; color: var(--text-muted); }
    .empty-state-icon { font-size: 64px; margin-bottom: 16px; }
    
    .login-form { max-width: 360px; margin: 0 auto; }
    .login-form .form-group { margin-bottom: 20px; }
    .login-hint {
      margin-top: 16px;
      padding: 12px;
      background: var(--bg-tertiary);
      border-radius: 8px;
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .login-hint code {

    .stock-log-row { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr; gap: 8px; padding: 8px; border-bottom: 1px solid var(--border-color); font-size: 0.85rem; align-items: center; }
    .stock-log-row.header { font-weight: 600; color: var(--text-muted); font-size: 0.8rem; }
    .stock-log-type { padding: 2px 8px; border-radius: 10px; font-size: 0.75rem; }
    .stock-log-type.in { background: var(--accent-secondary-light); color: var(--accent-secondary); }
    .stock-log-type.out { background: var(--accent-danger-light); color: var(--accent-danger); }
      background: var(--bg-input);
      padding: 2px 6px;
      border-radius: 4px;
      font-family: var(--font-mono);
    }