*{margin:0;padding:0;box-sizing:border-box}
:root{--c:#4f46e5;--cl:#eef2ff;--cd:#4338ca;--r:#ef4444;--g:#22c55e;--y:#f59e0b;--t:#1e293b;--t2:#64748b;--t3:#94a3b8;--bg:#f1f5f9;--w:#fff;--bd:#e2e8f0;--rd:12px;--sh:0 1px 3px rgba(0,0,0,.05)}
html{font-size:16px;-webkit-text-size-adjust:100%}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;color:var(--t);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--c);text-decoration:none}img{max-width:100%;height:auto;display:block}.container{max-width:1200px;margin:0 auto;padding:0 16px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 20px;border-radius:10px;font-size:14px;font-weight:600;border:none;cursor:pointer;transition:all .2s;text-decoration:none;gap:6px}.btn-primary{background:var(--c);color:#fff}.btn-primary:hover{background:var(--cd);box-shadow:0 4px 12px rgba(79,70,229,.25)}.btn-success{background:var(--g);color:#fff}.btn-danger{background:var(--r);color:#fff}.btn-outline{background:transparent;border:1.5px solid var(--bd);color:var(--t2)}.btn-outline:hover{border-color:var(--c);color:var(--c)}.btn-ghost{background:transparent;color:var(--t2);padding:8px 12px}.btn-ghost:hover{background:var(--cl);color:var(--c)}.btn-sm{padding:6px 14px;font-size:13px;border-radius:8px}.btn-lg{padding:14px 28px;font-size:16px}.btn-block{display:flex;width:100%}.btn-group{display:flex;gap:8px;flex-wrap:wrap}
.card{background:var(--w);border-radius:var(--rd);padding:16px;margin-bottom:12px;box-shadow:var(--sh);border:1px solid rgba(0,0,0,.03)}.card-title{font-size:15px;font-weight:600;margin-bottom:12px}
.form-control{width:100%;padding:11px 14px;border:1.5px solid var(--bd);border-radius:10px;font-size:14px;transition:all .2s;background:var(--w);color:var(--t);-webkit-appearance:none}.form-control:focus{outline:none;border-color:var(--c);box-shadow:0 0 0 4px rgba(79,70,229,.08)}.form-control::placeholder{color:var(--t3)}select.form-control{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:32px}textarea.form-control{resize:vertical;min-height:80px}.form-group{margin-bottom:14px}.form-group label{display:block;font-size:13px;font-weight:600;color:var(--t2);margin-bottom:5px}.form-hint{font-size:12px;color:var(--t3);margin-top:4px}.form-row{display:flex;gap:12px}.form-row>.form-group{flex:1}
.table{width:100%;border-collapse:collapse;font-size:14px}.table th,.table td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--bd)}.table th{font-weight:600;color:var(--t2);font-size:12px;letter-spacing:.3px;background:#fafbfc;white-space:nowrap}.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:8px;border:1px solid var(--bd)}
.badge{display:inline-flex;padding:2px 8px;border-radius:6px;font-size:11px;font-weight:600;line-height:1.6;white-space:nowrap}.badge-info{background:var(--cl);color:var(--c)}.badge-success{background:#dcfce7;color:#15803d}.badge-warning{background:#fef3c7;color:#92400e}.badge-danger{background:#fee2e2;color:#dc2626}.badge-muted{background:#f1f5f9;color:var(--t3)}
.header{background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--bd);position:sticky;top:0;z-index:100}.header .container{display:flex;align-items:center;justify-content:space-between;height:54px}.logo{font-size:18px;font-weight:800;color:var(--t);letter-spacing:-.3px}.nav{display:flex;gap:2px;align-items:center}.nav a{padding:7px 14px;border-radius:8px;font-size:14px;color:var(--t2);transition:all .15s;white-space:nowrap;font-weight:500}.nav a:hover,.nav a.active{color:var(--c);background:var(--cl)}
.bottom-nav{display:none;position:fixed;bottom:0;left:0;right:0;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-top:1px solid var(--bd);z-index:100;padding-bottom:env(safe-area-inset-bottom)}.bottom-nav-inner{display:flex;max-width:500px;margin:0 auto}.bottom-nav a{display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 0 5px;font-size:10px;color:var(--t3);text-decoration:none;flex:1;font-weight:500;transition:color .15s}.bottom-nav a.active{color:var(--c)}.bottom-nav a.active svg{stroke-width:2.5}.bottom-nav a svg{width:22px;height:22px}
.page-wrapper{min-height:calc(100vh - 54px);padding:16px 0}
.search-bar{display:flex;gap:8px;margin-bottom:14px}.search-bar input{flex:1;padding:11px 16px;border:1.5px solid var(--bd);border-radius:12px;font-size:14px;background:var(--w);min-width:0}.search-bar input:focus{outline:none;border-color:var(--c)}.search-bar .btn{flex-shrink:0}
.banner-wrap{border-radius:var(--rd);overflow:hidden;margin-bottom:14px;position:relative;box-shadow:var(--sh)}.banner-track{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none}.banner-track::-webkit-scrollbar{display:none}.banner-slide{min-width:100%;scroll-snap-align:start}.banner-slide img{width:100%;aspect-ratio:3/1;object-fit:cover;max-height:280px}.banner-dots{position:absolute;bottom:10px;left:50%;transform:translateX(-50%);display:flex;gap:6px}.banner-dots span{width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.4);cursor:pointer;transition:all .3s}.banner-dots span.active{background:#fff;width:18px;border-radius:3px}
.cat-pills{display:flex;gap:8px;overflow-x:auto;padding-bottom:10px;scrollbar-width:none}.cat-pills::-webkit-scrollbar{display:none}.cat-pill{flex-shrink:0;padding:7px 18px;border-radius:20px;font-size:13px;background:var(--w);color:var(--t2);border:1.5px solid var(--bd);transition:all .2s;text-decoration:none;white-space:nowrap;font-weight:500}.cat-pill.active,.cat-pill:hover{background:var(--c);color:#fff;border-color:var(--c)}
.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.section-title{font-size:17px;font-weight:700;display:flex;align-items:center;gap:6px}.section-more{font-size:13px;color:var(--t3)}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.product-card{background:var(--w);border-radius:var(--rd);overflow:hidden;transition:all .25s;text-decoration:none;color:inherit;display:block;box-shadow:var(--sh);border:1px solid rgba(0,0,0,.03)}.product-card:hover{box-shadow:0 8px 25px rgba(0,0,0,.08);transform:translateY(-2px)}.product-cover{width:100%;aspect-ratio:1/1;overflow:hidden;background:#f8fafc;position:relative}.product-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s}.product-card:hover .product-cover img{transform:scale(1.05)}.product-tags{position:absolute;top:8px;left:8px;display:flex;flex-wrap:wrap;gap:4px}.product-tags span{color:#fff;font-size:10px;padding:2px 8px;border-radius:6px;font-weight:600}.tag-seckill{background:rgba(239,68,68,.85)}.tag-hot{background:rgba(245,158,11,.85)}.tag-new{background:rgba(79,70,229,.85)}.tag-group{background:rgba(139,92,246,.85)}.product-body{padding:12px}.product-name{font-size:13px;font-weight:500;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:36px;margin-bottom:6px}.product-price{font-size:17px;font-weight:800;color:var(--r)}.product-price .old{font-size:12px;color:var(--t3);text-decoration:line-through;font-weight:400;margin-left:4px}.product-info-row{display:flex;gap:4px;flex-wrap:wrap;margin-top:8px}.product-info-tag{font-size:10px;padding:2px 8px;border-radius:6px;background:#f1f5f9;color:var(--t2);font-weight:500}.product-info-tag.stock{background:#dcfce7;color:#15803d}.product-info-tag.low{background:#fee2e2;color:#dc2626}
.notice-bar{background:#fffbeb;border:1px solid #fef3c7;border-radius:10px;padding:10px 14px;margin-bottom:12px;display:flex;align-items:center;gap:8px;font-size:13px}.notice-bar a{flex:1;color:#92400e;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:500}
.auth-wrap{max-width:420px;margin:0 auto;padding:30px 0}.auth-card{background:var(--w);border-radius:16px;padding:32px 28px;box-shadow:0 4px 20px rgba(0,0,0,.06);border:1px solid rgba(0,0,0,.04)}.auth-title{font-size:22px;font-weight:700;text-align:center;margin-bottom:6px}.auth-sub{font-size:14px;color:var(--t3);text-align:center;margin-bottom:24px}.auth-footer{text-align:center;margin-top:20px;font-size:14px;color:var(--t3)}
.detail-wrap{max-width:680px;margin:0 auto}
.toast{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);padding:16px 32px;border-radius:12px;color:#fff;font-size:15px;font-weight:600;z-index:99999;animation:toastIn .25s ease,toastOut .3s ease 1.8s forwards;box-shadow:0 12px 40px rgba(0,0,0,.25);max-width:80%;text-align:center;pointer-events:none;min-width:120px}.toast.success{background:rgba(21,128,61,.92)}.toast.error{background:rgba(220,38,38,.92)}.toast.warning{background:rgba(217,119,6,.92)}.toast.info{background:rgba(37,99,235,.92)}@keyframes toastIn{from{opacity:0;transform:translate(-50%,-50%) scale(.9)}to{opacity:1;transform:translate(-50%,-50%) scale(1)}}@keyframes toastOut{to{opacity:0;transform:translate(-50%,-50%) scale(.9)}}
.empty{text-align:center;padding:50px 20px;color:var(--t3)}.empty-icon{font-size:40px;margin-bottom:10px;opacity:.4}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:14px}.stat-card{background:var(--w);border-radius:var(--rd);padding:16px;text-align:center;box-shadow:var(--sh)}.stat-label{font-size:11px;color:var(--t3);margin-bottom:2px;font-weight:500}.stat-value{font-size:22px;font-weight:800}
.flex-between{display:flex;align-items:center;justify-content:space-between}.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}.mt-1{margin-top:8px}.mt-2{margin-top:16px}.text-center{text-align:center}.text-success{color:var(--g)}.text-danger{color:var(--r)}.text-muted{color:var(--t3)}
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:300;align-items:center;justify-content:center;backdrop-filter:blur(2px)}.modal-overlay.show{display:flex}.modal{background:var(--w);border-radius:16px;padding:24px;width:90%;max-width:420px;max-height:80vh;overflow-y:auto}.modal-title{font-size:17px;font-weight:600;margin-bottom:14px}.modal-actions{display:flex;gap:8px;margin-top:18px;justify-content:flex-end}
.pagination{display:flex;gap:4px;justify-content:center;margin-top:16px;flex-wrap:wrap}.pagination a,.pagination span{padding:7px 14px;border-radius:8px;font-size:13px;border:1px solid var(--bd);color:var(--t2);font-weight:500}.pagination a:hover{border-color:var(--c);color:var(--c)}.pagination span.current{background:var(--c);color:#fff;border-color:var(--c)}
.admin-layout{display:flex;min-height:100vh}.admin-sidebar{width:220px;background:#0f172a;color:#fff;flex-shrink:0;position:fixed;top:0;left:0;height:100vh;z-index:200;display:flex;flex-direction:column;overflow:hidden}.sidebar-brand{padding:16px 18px;display:flex;align-items:center;gap:10px;border-bottom:1px solid rgba(255,255,255,.06);flex-shrink:0}.sidebar-brand-icon{width:32px;height:32px;border-radius:8px;background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;flex-shrink:0}.sidebar-brand-text{font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-nav{flex:1;padding:8px 0;overflow-y:auto;scrollbar-width:none}.sidebar-nav::-webkit-scrollbar{width:0}.sidebar-icon{width:18px;height:18px;display:flex;align-items:center;justify-content:center;flex-shrink:0;opacity:.5}.sidebar-link{display:flex;align-items:center;gap:10px;padding:9px 18px;font-size:13px;color:rgba(255,255,255,.5);cursor:pointer;transition:all .15s;text-decoration:none;white-space:nowrap}.sidebar-link:hover{color:#fff;background:rgba(255,255,255,.06)}.sidebar-link.active{color:#fff;background:rgba(79,70,229,.3)}.sidebar-link.active .sidebar-icon{opacity:1}.sidebar-group-toggle{display:flex;align-items:center;gap:10px;padding:9px 18px;font-size:13px;color:rgba(255,255,255,.5);cursor:pointer;transition:all .15s;user-select:none;white-space:nowrap}.sidebar-group-toggle:hover{color:#fff;background:rgba(255,255,255,.04)}.sidebar-arrow{margin-left:auto;opacity:.3;transition:transform .2s;flex-shrink:0}.sidebar-group.open>.sidebar-group-toggle{color:rgba(255,255,255,.85)}.sidebar-group.open>.sidebar-group-toggle .sidebar-icon{opacity:1}.sidebar-group.open>.sidebar-group-toggle .sidebar-arrow{transform:rotate(180deg)}.sidebar-submenu{max-height:0;overflow:hidden;transition:max-height .25s ease}.sidebar-group.open>.sidebar-submenu{max-height:500px}.sidebar-submenu a{display:block;padding:7px 18px 7px 46px;font-size:12px;color:rgba(255,255,255,.4);transition:all .15s;text-decoration:none;white-space:nowrap}.sidebar-submenu a:hover{color:#fff;background:rgba(255,255,255,.04)}.sidebar-submenu a.active{color:#fff;background:rgba(79,70,229,.2)}.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:199}.sidebar-overlay.show{display:block}.admin-topbar{display:none;margin-bottom:14px;align-items:center;gap:10px}.admin-mobile-toggle{background:none;border:1.5px solid var(--bd);border-radius:8px;padding:6px 8px;cursor:pointer;color:var(--t);display:flex;align-items:center}.admin-content{flex:1;margin-left:220px;padding:24px;background:var(--bg);min-height:100vh;overflow-x:hidden}.admin-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;flex-wrap:wrap;gap:8px}.admin-header h2{font-size:20px;font-weight:700}.actions{white-space:nowrap}.actions a,.actions button{margin-right:6px;font-size:13px}
@media(min-width:769px){.product-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px}.mobile-only{display:none!important}}
@media(max-width:768px){.container{padding:0 14px}.page-wrapper{padding:14px 0 78px}.nav,.desktop-only{display:none!important}.bottom-nav{display:flex!important;flex-direction:row;align-items:center}.stats-grid{grid-template-columns:repeat(2,1fr)}.form-row{flex-direction:column;gap:0}.auth-wrap{padding:16px 0}.auth-card{padding:24px 20px}.admin-sidebar{transform:translateX(-100%);transition:transform .25s;width:260px}.admin-sidebar.show{transform:translateX(0)}.admin-content{margin-left:0;padding:14px}.admin-topbar{display:flex}.table{font-size:12px}.table th,.table td{padding:7px 8px}.detail-wrap{max-width:100%}}
@media(max-width:480px){.product-grid{gap:8px}.product-body{padding:10px}.product-name{font-size:12px}.banner-slide img{aspect-ratio:2/1}.stats-grid{grid-template-columns:1fr 1fr}}

.footer-wrap{text-align:center;padding:14px;font-size:12px;color:var(--t3);background:var(--w);border-top:1px solid var(--bd);margin-top:20px}