* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: "Segoe UI", "Microsoft YaHei", sans-serif; background: #f5f6f8; color: #333; }
a { color: #2563eb; text-decoration: none; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 15px; }
.topbar { background: #fff; border-bottom: 1px solid #e5e7eb; position: sticky; top: 0; z-index: 100; }
.topbar .wrap { display: flex; align-items: center; height: 60px; gap: 30px; }
.logo { font-size: 24px; font-weight: 800; color: #e53935; }
.logo span { color: #f59e0b; }
.nav { display: flex; gap: 20px; flex: 1; }
.nav a { color: #374151; font-size: 15px; }
.nav a:hover { color: #e53935; }
.user { display: flex; gap: 14px; font-size: 14px; align-items: center; }
.user a { color: #2563eb; }
.hero { background: linear-gradient(135deg, #1e3a8a, #2563eb); color: #fff; padding: 40px 0; margin-bottom: 24px; }
.hero h1 { font-size: 32px; margin-bottom: 10px; }
.hero p { opacity: .9; }
.hero .search { display: flex; margin-top: 18px; max-width: 520px; }
.hero .search input { flex: 1; padding: 12px 16px; border: none; border-radius: 6px 0 0 6px; font-size: 15px; }
.hero .search button { padding: 12px 24px; background: #f59e0b; color: #fff; border: none; border-radius: 0 6px 6px 0; cursor: pointer; font-size: 15px; }
.section { margin-bottom: 28px; }
.section h2 { font-size: 20px; margin-bottom: 14px; padding-left: 10px; border-left: 4px solid #e53935; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; }
.card { background: #fff; border-radius: 10px; overflow: hidden; box-shadow: 0 1px 3px rgba(0,0,0,.08); transition: .2s; }
.card:hover { transform: translateY(-3px); box-shadow: 0 4px 12px rgba(0,0,0,.12); }
.card .thumb { width: 100%; height: 200px; object-fit: cover; background: #f3f4f6; display: block; }
.card .info { padding: 12px; }
.card .title { font-size: 14px; height: 40px; overflow: hidden; color: #333; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.card .price { color: #e53935; font-size: 18px; font-weight: 700; margin-top: 6px; }
.card .price small { font-size: 12px; font-weight: 400; }
.card .meta { color: #9ca3af; font-size: 12px; margin-top: 4px; }
.cats { display: flex; flex-wrap: wrap; gap: 10px; }
.cats a { background: #fff; padding: 8px 18px; border-radius: 20px; font-size: 14px; color: #374151; box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.cats a:hover { background: #e53935; color: #fff; }
.panel { background: #fff; border-radius: 10px; padding: 20px; box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.btn { display: inline-block; padding: 10px 22px; border-radius: 6px; border: none; cursor: pointer; font-size: 14px; }
.btn-red { background: #e53935; color: #fff; }
.btn-blue { background: #2563eb; color: #fff; }
.btn-gray { background: #e5e7eb; color: #374151; }
.btn-sm { padding: 5px 12px; font-size: 13px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid #f3f4f6; }
th { background: #f9fafb; }
input[type=text], input[type=password], input[type=number], input[type=tel], select, textarea { width: 100%; padding: 10px 12px; border: 1px solid #d1d5db; border-radius: 6px; font-size: 14px; }
.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-size: 13px; color: #374151; margin-bottom: 5px; }
.alert { padding: 12px 16px; border-radius: 6px; margin-bottom: 14px; font-size: 14px; }
.alert-green { background: #dcfce7; color: #166534; }
.alert-red { background: #fee2e2; color: #991b1b; }
.pager { display: flex; gap: 8px; margin-top: 16px; }
.pager a { padding: 6px 12px; border: 1px solid #d1d5db; border-radius: 6px; font-size: 13px; color: #374151; }
.pager .cur { background: #e53935; color: #fff; border-color: #e53935; }
.detail { display: flex; gap: 30px; }
.detail .photos { width: 400px; }
.detail .photos img { width: 100%; border-radius: 10px; }
.detail .photos .thumbs { display: flex; gap: 8px; margin-top: 8px; }
.detail .photos .thumbs img { width: 80px; height: 80px; object-fit: cover; cursor: pointer; border-radius: 6px; }
.detail .body { flex: 1; }
.detail .body h1 { font-size: 22px; margin-bottom: 10px; }
.price-box { background: #fff5f5; border-radius: 8px; padding: 16px; margin: 14px 0; }
.price-box .now { color: #e53935; font-size: 28px; font-weight: 800; }
.price-box .old { color: #9ca3af; text-decoration: line-through; margin-left: 12px; font-size: 14px; }
.buy-bar { display: flex; gap: 12px; margin-top: 16px; align-items: center; }
.num-box { display: flex; align-items: center; border: 1px solid #d1d5db; border-radius: 6px; overflow: hidden; }
.num-box button { width: 34px; height: 38px; border: none; background: #f3f4f6; cursor: pointer; font-size: 16px; }
.num-box input { width: 50px; text-align: center; border: none; height: 38px; }
.goods-desc { margin-top: 30px; }
.footer { background: #1f2937; color: #9ca3af; padding: 30px 0; margin-top: 40px; text-align: center; font-size: 13px; }
.badge { display: inline-block; padding: 2px 10px; border-radius: 20px; font-size: 12px; }
.badge-red { background: #fee2e2; color: #991b1b; }
.badge-green { background: #dcfce7; color: #166534; }
.badge-blue { background: #dbeafe; color: #1e40af; }
.badge-gray { background: #f3f4f6; color: #4b5563; }
.badge-orange { background: #ffedd5; color: #9a3412; }
.flex { display: flex; gap: 14px; align-items: center; }
.muted { color: #9ca3af; font-size: 13px; }
.mt { margin-top: 14px; }
.mb { margin-bottom: 14px; }