:root { --red:#E53935; --red2:#FF5252; --dark:#B71C1C; --bg:#f5f5f5; }
* { box-sizing:border-box; }
body { margin:0; font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif; background:var(--bg); color:#222; min-height:100vh; display:flex; flex-direction:column; }
a { color:var(--dark); text-decoration:none; }
.topbar{position:sticky;top:0;background:#fff;border-bottom:1px solid #e0e0e0;padding:12px 7%;display:flex;gap:24px;align-items:center;justify-content:space-between;z-index:99}
.logo{font-weight:700;color:var(--red);white-space:nowrap;display:flex;align-items:center;gap:4px}
.logo-icon{height:48px;width:auto;display:block;vertical-align:middle}
.video-link{display:inline-block;padding:4px 10px;background:#f0f7ff;color:#1976d2;border:1px solid #bbdefb;border-radius:6px;font-size:13px;text-decoration:none;transition:all .2s}
.video-link:hover{background:#1976d2;color:#fff;border-color:#1976d2}
.nav-menu{display:flex;gap:8px;align-items:center;margin-left:auto}
.nav-item{color:#666;font-size:14px;padding:6px 12px;border-radius:6px;text-decoration:none}
.nav-item:hover{background:#f5f5f5;color:#333}
.nav-item.active{background:#e3f2fd;color:#1976d2;font-weight:600}
.nav-dropdown{position:relative;display:inline-block}
.nav-dropdown .dropdown-menu{display:none;position:absolute;top:100%;right:0;background:#fff;border:1px solid #e0e0e0;border-radius:8px;box-shadow:0 4px 12px rgba(0,0,0,.15);min-width:220px;z-index:1000;margin-top:6px;padding:4px 0}
.nav-dropdown:hover .dropdown-menu{display:block}
.nav-dropdown .dropdown-menu a{display:block;padding:12px 16px;color:#333;font-size:14px;white-space:nowrap;text-decoration:none;transition:background .2s}
.nav-dropdown .dropdown-menu a:hover{background:#f5f5f5;color:#4daf29}
.notice-bar{background:linear-gradient(135deg,#fff3cd,#ffe8a1);border-bottom:1px solid #ffeeba;padding:0;font-size:13px;color:#856404;overflow:hidden;position:relative;height:36px}
.notice-content{display:flex;gap:40px;white-space:nowrap;animation:scroll 60s linear infinite;padding:10px 0}
.notice-content span{padding:0 20px}
@keyframes scroll{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}
.notice-box{background:#fff9e6;border:1px solid #ffd666;border-radius:8px;padding:12px 16px;margin-bottom:16px;font-size:13px;line-height:1.8;color:#856404}
.notice-item{margin:4px 0}
.container{max-width:100%;margin:0;padding:20px 7% 80px 7%;flex:1}
.hero{background:linear-gradient(135deg,var(--red),var(--red2));color:#fff;padding:24px;border-radius:12px;margin-bottom:16px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.card{background:#fff;border:1px solid #e0e0e0;border-radius:12px;padding:12px}
.chip-list{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.chip{background:#fff;border:1px solid #e0e0e0;padding:6px 10px;border-radius:999px}

.category-list{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.category-row{display:flex;justify-content:space-between;align-items:center;background:#fff;border:1px solid #e0e0e0;border-radius:10px;padding:12px 14px;transition:all 0.2s ease}
.category-row:hover{background:#f0f9ff;border-color:#409eff;box-shadow:0 2px 8px rgba(64,158,255,0.15)}
.cat-left{display:flex;align-items:center;gap:10px}
.cat-icon{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;font-size:18px;line-height:1}
.svg-icon{width:1em;height:1em;vertical-align:-0.15em;fill:currentColor;overflow:hidden;font-size:20px}
.cat-name{font-weight:500;font-size:15px}
.cat-right{color:#666;font-size:13px}

.product-list{display:flex;flex-direction:column;gap:8px}
.product-row{display:grid;grid-template-columns:1fr 110px 90px 72px;gap:10px;align-items:center;background:#fff;border:1px solid #e0e0e0;border-radius:10px;padding:10px 14px;transition:all 0.2s ease;cursor:pointer}
.product-row:hover{background:#f0f9ff;border-color:#409eff;box-shadow:0 2px 8px rgba(64,158,255,0.15);transform:translateY(-1px)}
.p-name{font-weight:500;font-size:15px;color:#303133}
.p-price{color:#c62828;font-weight:700;text-align:right;font-size:15px}
.p-stock{color:#666;text-align:right;font-size:13px}

.pager{display:flex;gap:14px;justify-content:center;align-items:center;margin:16px 0}
.pager a{padding:6px 10px;border:1px solid #e0e0e0;border-radius:8px;background:#fff}

.footer{position:fixed;bottom:0;left:0;right:0;padding:12px 7%;text-align:center;color:#666;background:#fff;border-top:1px solid #e0e0e0;z-index:98;font-size:12px}
.footer p{margin:4px 0}
table{width:100%;border-collapse:collapse;background:#fff}
th,td{border:1px solid #e0e0e0;padding:8px;text-align:left;font-size:14px}
.form,.form-inline{display:flex;flex-direction:column;gap:10px;max-width:560px}
.form-inline{flex-direction:row}
input,select,textarea{padding:8px;border:1px solid #e0e0e0;border-radius:8px}
.error{color:#b00020}
pre{background:#fff;border:1px solid #e0e0e0;padding:10px;border-radius:8px;white-space:pre-wrap}
.sort-bar{display:flex;gap:12px;margin-bottom:12px}
.sort-bar a,.search-form{display:flex;gap:8px}
.search-form input{flex:1;padding:8px;border:1px solid #e0e0e0;border-radius:8px}
.search-form button,.btn,button{background:var(--red);color:#fff;border:none;padding:8px 12px;border-radius:8px;cursor:pointer}
.search-form button:hover,.btn:hover,button:hover{background:var(--dark)}


.split-layout{display:grid;grid-template-columns:280px 1fr;gap:14px}
.left-cats{background:#fff;border:1px solid #e0e0e0;border-radius:12px;padding:10px}
.right-products{background:#fff;border:1px solid #e0e0e0;border-radius:12px;padding:10px}
.list-header{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}
.category-row.active{border-color:#e53935;background:#f5f5f5}
.left-cats h3{font-size:15px;font-weight:600;margin:0 0 12px 0;color:#333}

@media (max-width: 768px){
  .topbar{flex-wrap:wrap;gap:8px;padding:8px 4%}
  .logo-icon{height:36px}
  .nav-menu{width:100%;justify-content:space-around;gap:0;margin-left:0;border-top:1px solid #e0e0e0;padding-top:6px}
  .nav-item{font-size:12px;padding:4px 6px}
  .nav-dropdown .nav-item{font-size:12px;padding:4px 6px}
  .split-layout{grid-template-columns:1fr}
  .left-cats{padding:8px;border-radius:8px}
  .left-cats h3{display:none}
  .category-list{flex-direction:row;overflow-x:auto;gap:6px;margin-bottom:8px;padding-bottom:4px;-webkit-overflow-scrolling:touch;scrollbar-width:none}
  .category-list::-webkit-scrollbar{display:none}
  .category-row{flex-shrink:0;padding:8px 12px;border-radius:20px;font-size:13px;white-space:nowrap}
  .category-row .cat-right{display:none}
  .category-row .cat-icon{display:none}
  .product-row{grid-template-columns:1fr 80px 70px 60px;gap:6px;padding:8px}
  .p-name{font-size:14px}
  .p-price,.p-stock{font-size:13px}
  .btn{padding:6px 8px;font-size:13px}
}