* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif; background: #f0f2f5; color: #333; }

header { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; padding: 40px 20px; text-align: center; }
header .logo { font-size: 28px; font-weight: bold; margin-bottom: 8px; }
header .logo a { color: white; text-decoration: none; }
header .subtitle { opacity: 0.9; font-size: 14px; }
.container { max-width: 1000px; margin: 0 auto; padding: 20px; }
footer { text-align: center; padding: 30px; color: #999; font-size: 12px; }

h2 { font-size: 20px; margin: 20px 0; color: #2d3436; }

.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.product-card { background: white; border-radius: 12px; padding: 24px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); text-decoration: none; color: #333; transition: transform .2s, box-shadow .2s; }
.product-card:hover { transform: translateY(-4px); box-shadow: 0 8px 20px rgba(0,0,0,0.12); }
.product-card .card-icon { font-size: 48px; margin-bottom: 10px; }
.product-card h3 { font-size: 18px; margin-bottom: 8px; }
.product-card .desc { font-size: 13px; color: #636e72; line-height: 1.5; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

.breadcrumb { font-size: 13px; color: #999; margin-bottom: 20px; }
.breadcrumb a { color: #667eea; text-decoration: none; }
.product-detail { display: flex; gap: 30px; flex-wrap: wrap; background: white; border-radius: 12px; padding: 30px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.product-show { flex: 1; min-width: 280px; }
.main-img { background: linear-gradient(135deg, #43e97b, #38f9d7); border-radius: 12px; min-height: 280px; display: flex; align-items: center; justify-content: center; font-size: 80px; }
.thumbnails { display: flex; gap: 10px; margin-top: 12px; }
.thumb { width: 70px; height: 70px; background: #e0e0e0; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 28px; cursor: pointer; border: 2px solid transparent; }
.thumb:hover { border-color: #667eea; }
.product-info { flex: 1; min-width: 280px; }
.product-info h1 { font-size: 24px; margin-bottom: 12px; }
.product-info .desc { color: #636e72; line-height: 1.6; margin-bottom: 15px; }
.features { list-style: none; margin: 15px 0; }
.features li { padding: 6px 0; font-size: 14px; color: #555; border-bottom: 1px solid #f0f0f0; }

.price { font-size: 28px; font-weight: bold; color: #e74c3c; margin: 20px 0; }

.actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 12px 28px; border-radius: 25px; text-decoration: none; font-size: 15px; border: 2px solid #667eea; color: #667eea; background: white; cursor: pointer; transition: all .2s; }
.btn-primary { background: linear-gradient(135deg, #667eea, #764ba2); color: white; border: none; }
.btn:hover { transform: scale(1.03); }

.contact-card { background: white; border-radius: 12px; padding: 40px; max-width: 500px; margin: 30px auto; box-shadow: 0 2px 8px rgba(0,0,0,0.08); text-align: center; }
.contact-card h2 { margin-bottom: 15px; text-align: center; }
.contact-card p { margin: 10px 0; color: #636e72; }
.wechat-qr { margin: 25px 0; }
.qr-placeholder { width: 180px; height: 180px; background: #f5f5f5; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 48px; margin: 0 auto 10px; border: 2px dashed #ddd; }
.wechat-id { font-size: 16px; }
.steps { text-align: left; margin-top: 25px; padding-top: 20px; border-top: 1px solid #eee; }
.steps h3 { font-size: 15px; margin-bottom: 10px; }
.steps li { padding: 4px 0; font-size: 14px; color: #555; }