/* 公共头部样式（单一来源，2026-08-31，由 _shared_header.py 生成可重跑）
   所有页面共用；改样式请改 _shared_header.py 后重跑，或直接改本文件 */
/* ===== 顶部工具条（企业门户快照样式） ===== */
.enterprise-top-nav{box-sizing:border-box;justify-content:space-between;align-items:center;width:100%;padding:0 16px;font-family:inherit;display:flex}.nav-left{align-items:center;gap:16px;display:flex}.nav-right{align-items:center;gap:12px;display:flex}.matrix-trigger{cursor:pointer;position:relative}.trigger-text{white-space:nowrap}.matrix-dropdown{z-index:1000;background:#fff;border:1px solid #e0e0e0;border-radius:4px;min-width:300px;padding:12px;line-height:1.5;position:absolute;top:100%;left:0;box-shadow:0 4px 12px #0000001a}.dropdown-search{box-sizing:border-box;border:1px solid #ddd;border-radius:4px;width:100%;margin-bottom:8px;padding:6px 10px;font-size:12px}.category-tabs{gap:8px;margin-bottom:8px;display:flex}.category-tab{cursor:pointer;border-radius:2px;padding:2px 8px;font-size:12px}.category-tab.active{background:#f0f0f0;font-weight:600}.category-divider{background:#ccc;width:100%;height:1px;margin-bottom:8px}.item-list{flex-wrap:wrap;gap:8px;max-height:200px;display:flex;overflow-y:auto}.item-link{color:#333;border-radius:2px;padding:4px 12px;font-size:12px;text-decoration:none}.item-link:hover{background:#f5f5f5}.trade-link{color:inherit;white-space:nowrap;text-decoration:none}.search-input{border:1px solid #ddd;border-radius:4px;outline:none;width:140px;padding:4px 10px;font-size:12px}.download-trigger{cursor:pointer;position:relative}.download-text{white-space:nowrap}.qrcode-popup{text-align:center;z-index:1000;background:#fff;border:1px solid #e0e0e0;border-radius:4px;padding:12px;line-height:1.5;position:absolute;top:100%;right:0;box-shadow:0 4px 12px #0000001a}.qrcode-tip{margin:0 0 8px;font-size:12px}.qrcode-image{width:120px;height:120px}.register-link{color:inherit;white-space:nowrap;text-decoration:none}.cart-icon-wrap{cursor:pointer;color:inherit;align-items:center;padding:2px 4px;display:inline-flex;position:relative}.cart-svg{vertical-align:middle}.cart-badge{color:#fff;text-align:center;white-space:nowrap;background:#f56c6c;border-radius:8px;min-width:16px;height:16px;padding:0 4px;font-size:10px;line-height:16px;position:absolute;top:-6px;right:-6px}.login-btn{white-space:nowrap;border-radius:3px;padding:2px 8px;font-size:11px;text-decoration:none}.logged-in{cursor:default}.logout-btn{color:inherit;white-space:nowrap;cursor:pointer;font-size:11px;text-decoration:none}
.main-nav{box-sizing:border-box;border-bottom:1px solid #dee2e6;width:100%;box-shadow:0 .125rem .25rem #00000013}.main-nav-inner{flex-wrap:wrap;align-items:center;max-width:100%;margin:0 auto;padding:0 12px;display:flex}.nav-brand{flex-shrink:0;align-items:center;margin-right:24px;display:flex}.nav-site-name{white-space:nowrap;font-family:Microsoft Yahei,PingFang SC,sans-serif;font-weight:700}.nav-toggle{cursor:pointer;color:#333;background:0 0;border:none;padding:4px;display:none}.nav-menu{flex-wrap:wrap;align-items:center;gap:0;display:flex}.nav-link{white-space:nowrap;cursor:pointer;align-items:center;padding:12px 10px;text-decoration:none;transition:color .2s;display:inline-flex}.nav-link:hover{opacity:.8}.nav-link.active{font-weight:600}.nav-empty{color:#c0c4cc;padding:12px;font-size:13px}@media (width<=1199px){.nav-toggle{display:block}.nav-menu{flex-direction:column;align-items:flex-start;width:100%;padding:8px 0;display:none}.nav-menu-open{display:flex}.nav-link{width:100%;padding:8px 0}}
/* ===== 搜索按钮（2026-09-01 用户反馈：搜索框搜索不了） ===== */
.search-btn{flex-shrink:0}.search-btn:hover{opacity:.85}
/* ===== H5 移动端适配（2026-09-01 用户要求：整体兼容 H5）：≤640 隐藏空壳工具条项、搜索框撑满 ===== */
@media (max-width:640px){
  .enterprise-top-nav{padding:0 12px !important}
  .nav-left{display:none !important}
  .nav-right{flex:1;min-width:0;justify-content:flex-end}
  .download-trigger,.register-link,.cart-icon-wrap,.trade-link{display:none !important}
  .search-input{flex:1;min-width:0;width:auto;box-sizing:border-box}
  .header-canvas{padding:10px 0 0 !important}
}