*{box-sizing:border-box}body{font-family:Arial,'Microsoft YaHei',sans-serif;margin:0;background:#f6f7fb;color:#222}.container{max-width:1050px;margin:0 auto;padding:16px}.top{background:#fff;border-bottom:1px solid #eee;position:sticky;top:0;z-index:10}.header{display:flex;align-items:center;justify-content:space-between;gap:12px}.brand{color:#d60000;font-weight:800;letter-spacing:.5px;text-decoration:none;font-size:18px}.header-right{display:flex;align-items:center;gap:12px}.small-title{white-space:nowrap}.title{font-size:22px;margin:12px 0 2px}.subtitle{color:#666;margin:0 0 14px}.search{display:flex;gap:8px;margin:12px 0}.search input{flex:1;padding:13px;border:1px solid #ddd;border-radius:10px;font-size:16px}.btn,button{background:#d60000;color:white;border:0;border-radius:10px;padding:12px 16px;font-size:15px;cursor:pointer}.btn.secondary,button.secondary{background:#555}.btn.light,button.light{background:#eee;color:#333}.lang{display:flex;gap:4px}.lang button{padding:8px 10px;background:#f1f1f1;color:#333}.lang button.active{background:#d60000;color:#fff}.card{background:#fff;border-radius:14px;padding:16px;margin:14px 0;box-shadow:0 2px 10px rgba(0,0,0,.05)}.group-title{font-size:17px;font-weight:700;margin:14px 0 10px}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.item{background:#fff;border:1px solid #eee;border-radius:14px;padding:18px 10px;text-align:center;font-weight:700;box-shadow:0 2px 8px rgba(0,0,0,.04);cursor:pointer}.item:hover{border-color:#d60000;color:#d60000}.lot-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.lot-item{background:#fff;border:1px solid #eee;border-radius:14px;padding:16px;text-align:center;font-weight:700;cursor:pointer;box-shadow:0 2px 8px rgba(0,0,0,.04);word-break:break-word}.lot-item:hover{border-color:#d60000;color:#d60000}.file-row{display:flex;justify-content:space-between;gap:10px;align-items:center;border-top:1px solid #eee;padding:12px 0}.muted{color:#777;font-size:13px}.footer{text-align:center;color:#777;font-size:12px;padding:28px 10px}.admin-login{max-width:420px;margin:40px auto}.admin input,.admin select{width:100%;padding:12px;border:1px solid #ddd;border-radius:10px;margin:8px 0 12px;font-size:15px}.admin textarea{width:100%;min-height:80px;padding:12px;border:1px solid #ddd;border-radius:10px}.admin table{width:100%;border-collapse:collapse;background:white}.admin th,.admin td{border-bottom:1px solid #eee;padding:10px;text-align:left;font-size:13px;vertical-align:top}.admin th{background:#fafafa}.danger{background:#a40000}.ok{color:#16833a}.err{color:#b00020}.hidden{display:none!important}.admin-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}.tab{background:#eee;color:#333}.tab.active{background:#d60000;color:#fff}.stat-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.stat{background:#fff;border:1px solid #eee;border-radius:14px;padding:14px}.stat .num{font-size:24px;font-weight:800;color:#d60000;margin-top:6px}.admin-section{display:none}.admin-section.active{display:block}.list-card{border:1px solid #eee;border-radius:12px;padding:12px;margin:10px 0;background:#fff}.list-card .row{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}.chip{display:inline-block;padding:4px 8px;border-radius:20px;background:#f3f3f3;margin:2px;font-size:12px}.admin-actions{display:flex;gap:8px;flex-wrap:wrap}.filter-box{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}.filter-box input{max-width:360px}.mobile-cards{display:none}@media(max-width:760px){.container{padding:12px}.header{align-items:flex-start}.header-right{align-items:flex-end;flex-direction:column;gap:6px}.small-title{display:none}.title{font-size:19px}.grid{grid-template-columns:repeat(2,1fr);gap:10px}.lot-grid{grid-template-columns:repeat(2,1fr);gap:10px}.item,.lot-item{padding:16px 8px}.search{flex-direction:column}.search button{width:100%}.file-row{flex-direction:column;align-items:flex-start}.stat-grid{grid-template-columns:repeat(2,1fr)}.admin table{display:none}.mobile-cards{display:block}.admin .card{padding:14px}.admin-tabs button{flex:1}.filter-box input{max-width:none}.desktop-only{display:none!important}}@media(max-width:390px){.grid,.lot-grid,.stat-grid{grid-template-columns:1fr}.brand{font-size:16px}.lang button{padding:7px 8px}}


/* V4.4 Mobile Admin Optimization */
.admin .card:first-child{position:relative}
.admin .header h2{font-size:26px;margin:0}
.admin .header .secondary{min-width:92px}
.admin-tabs{position:sticky;top:58px;z-index:9;background:#fff;border-radius:14px;padding:8px;box-shadow:0 4px 16px rgba(0,0,0,.06)}
.admin-tabs .tab{min-height:46px;font-weight:700}
.admin-section>.card{overflow:hidden}
.admin input[type=file]{background:#fafafa;border:1px dashed #ccc;padding:14px}
.admin label{font-weight:700;display:block;margin-top:6px}.admin h3{margin-top:0}
.admin .danger{padding:8px 10px;border-radius:8px}.admin .list-card b{font-size:15px}.admin .list-card .muted{line-height:1.55}
.mobile-admin-note{display:none}
@media(max-width:760px){
  body{background:#f4f5f8}.container.admin{padding:10px}.admin .header{flex-direction:row;align-items:center}.admin .header h2{font-size:24px}.admin .header .secondary{padding:10px 12px;border-radius:12px}
  .admin-tabs{top:52px;display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin:8px -2px 4px}.admin-tabs button{width:100%;font-size:15px;border-radius:12px;padding:12px 8px}.admin-tabs .tab.active{box-shadow:0 4px 12px rgba(214,0,0,.22)}
  .admin-section>.card{border-radius:16px;margin:12px 0;padding:14px}.admin h3{font-size:18px}.admin p.muted{font-size:13px;line-height:1.5}.admin input,.admin select{font-size:16px;padding:13px;border-radius:12px}.admin input[type=file]{font-size:14px}.admin button{min-height:44px;border-radius:12px;font-weight:700}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:8px}.stat{padding:12px;border-radius:14px}.stat .num{font-size:22px}.chip{font-size:13px;margin:4px 3px;padding:7px 10px}
  .filter-box{display:grid;grid-template-columns:1fr auto;gap:8px}.filter-box input{width:100%;margin:0}.filter-box button{margin:0}
  .list-card{border-radius:14px;padding:13px;margin:10px 0;box-shadow:0 2px 8px rgba(0,0,0,.04)}.list-card .row{align-items:center}.list-card .row span{max-width:66%;word-break:break-all}.list-card .danger{font-size:13px;min-height:36px;padding:7px 9px}
  #uploadMsg{font-size:14px;line-height:1.6;word-break:break-word}.mobile-admin-note{display:block;background:#fff3f3;color:#9b0000;border-radius:12px;padding:10px 12px;margin:8px 0;font-size:13px;line-height:1.45}
}
@media(max-width:430px){.admin-tabs{grid-template-columns:repeat(2,1fr)}.admin .header h2{font-size:22px}.stat-grid{grid-template-columns:1fr 1fr}.admin-section>.card{padding:12px}.admin .card .card{padding:12px}.list-card .row span{max-width:100%}.list-card .row{display:block}.list-card .row button{margin-top:8px;width:100%}}