:root{--primary-color: #8B4513;--primary-hover: #A0522D;--primary-light: #DEB887;--secondary-color: #1a1a2e;--accent-gold: #D4AF37;--accent-copper: #B87333;--background-color: #FAFAF8;--background-warm: #FDF5E6;--card-background: #ffffff;--text-primary: #1a1a2e;--text-secondary: #5c5c6d;--text-light: #8e8e9a;--border-color: #e8e4df;--success-color: #2E7D32;--warning-color: #ED6C02;--error-color: #C62828;--gradient-primary: linear-gradient(135deg, #8B4513 0%, #A0522D 50%, #D2691E 100%);--gradient-gold: linear-gradient(135deg, #D4AF37 0%, #FFD700 50%, #B8860B 100%);--gradient-luxury: linear-gradient(135deg, #1a1a2e 0%, #2d2d44 100%);--gradient-warm: linear-gradient(180deg, #FDF5E6 0%, #FAFAF8 100%);--shadow-sm: 0 2px 8px rgba(139, 69, 19, .06);--shadow-md: 0 4px 20px rgba(139, 69, 19, .1);--shadow-lg: 0 8px 40px rgba(139, 69, 19, .15);--shadow-gold: 0 4px 20px rgba(212, 175, 55, .25);--border-radius: 16px;--border-radius-sm: 8px;--border-radius-lg: 24px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:PingFang SC,Hiragino Sans GB,Microsoft YaHei,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--gradient-warm);color:var(--text-primary);line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.page-container{min-height:100vh;padding-bottom:70px;background:var(--gradient-warm)}.header{background:var(--gradient-luxury);color:#fff;padding:18px 24px;position:sticky;top:0;z-index:100;box-shadow:var(--shadow-lg)}.header:before{content:"";position:absolute;bottom:0;left:0;right:0;height:3px;background:var(--gradient-gold)}.header-title{font-size:20px;font-weight:600;text-align:center;letter-spacing:2px}.header-back{position:absolute;left:20px;top:50%;transform:translateY(-50%);color:#fff;font-size:20px;cursor:pointer;transition:transform .3s}.header-back:hover{transform:translateY(-50%) scale(1.1)}.card{background:var(--card-background);border-radius:var(--border-radius);box-shadow:var(--shadow-md);padding:20px;margin:16px;border:1px solid rgba(139,69,19,.05);transition:all .3s ease}.card:hover{box-shadow:var(--shadow-lg)}.card-title{font-size:17px;font-weight:600;color:var(--text-primary);margin-bottom:16px;display:flex;align-items:center;gap:10px;padding-bottom:12px;border-bottom:2px solid var(--primary-light)}.card-title:before{content:"";width:4px;height:20px;background:var(--gradient-primary);border-radius:2px}.product-card{background:var(--card-background);border-radius:var(--border-radius);box-shadow:var(--shadow-md);overflow:hidden;transition:all .4s cubic-bezier(.25,.46,.45,.94);border:1px solid rgba(139,69,19,.08)}.product-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}.product-card:active{transform:translateY(-4px) scale(.98)}.product-card-image{width:100%;aspect-ratio:1;object-fit:cover;background:linear-gradient(135deg,#fdf5e6,wheat);transition:transform .4s}.product-card:hover .product-card-image{transform:scale(1.05)}.product-card-content{padding:16px;background:linear-gradient(180deg,#fff,#fffaf5)}.product-card-name{font-size:15px;font-weight:600;color:var(--text-primary);margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.4}.product-card-price{font-size:20px;font-weight:700;color:var(--primary-color);font-family:DIN,Arial,sans-serif}.product-card-price:before{content:"¥";font-size:14px;margin-right:2px}.spec-list{display:flex;flex-wrap:wrap;gap:12px;margin:20px 0}.spec-item{padding:14px 24px;border:2px solid var(--border-color);border-radius:var(--border-radius-sm);cursor:pointer;transition:all .3s ease;background:#fff;position:relative;overflow:hidden}.spec-item:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:var(--gradient-primary);opacity:0;transition:opacity .3s}.spec-item:hover{border-color:var(--primary-color);box-shadow:var(--shadow-sm)}.spec-item.active{border-color:var(--primary-color);background:linear-gradient(135deg,#8b451314,#d2691e14)}.spec-item.active:after{content:"✓";position:absolute;top:4px;right:8px;font-size:12px;color:var(--primary-color)}.spec-item-name{font-size:14px;font-weight:500;color:var(--text-primary);position:relative;z-index:1}.spec-item-price{font-size:18px;font-weight:700;color:var(--primary-color);margin-top:6px;position:relative;z-index:1}.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 28px;border:none;border-radius:var(--border-radius-sm);font-size:16px;font-weight:600;cursor:pointer;transition:all .3s cubic-bezier(.25,.46,.45,.94);letter-spacing:1px}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 20px #8b451359;position:relative;overflow:hidden}.btn-primary:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s}.btn-primary:hover:before{left:100%}.btn-primary:hover{transform:translateY(-3px);box-shadow:0 8px 30px #8b451373}.btn-primary:active{transform:translateY(-1px)}.btn-block{width:100%}.tab-bar{position:fixed;bottom:0;left:0;right:0;height:65px;background:#fff;display:flex;justify-content:space-around;align-items:center;box-shadow:0 -4px 20px #00000014;z-index:100;border-top:1px solid rgba(139,69,19,.08)}.tab-item{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:1;height:100%;color:var(--text-light);text-decoration:none;transition:all .3s;position:relative}.tab-item.active{color:var(--primary-color)}.tab-item.active:before{content:"";position:absolute;top:0;left:50%;transform:translate(-50%);width:40px;height:3px;background:var(--gradient-primary);border-radius:0 0 3px 3px}.tab-item-icon{font-size:24px;margin-bottom:4px;transition:transform .3s}.tab-item.active .tab-item-icon{transform:scale(1.1)}.tab-item-text{font-size:11px;font-weight:500}.banner{margin:16px;border-radius:var(--border-radius);overflow:hidden;box-shadow:var(--shadow-md)}.banner-image{width:100%;height:200px;object-fit:cover}.category-list{display:flex;padding:16px;gap:14px;overflow-x:auto;-webkit-overflow-scrolling:touch}.category-list::-webkit-scrollbar{display:none}.category-item{display:flex;flex-direction:column;align-items:center;min-width:75px;padding:14px 10px;background:#fff;border-radius:var(--border-radius);box-shadow:var(--shadow-sm);cursor:pointer;transition:all .3s;border:2px solid transparent}.category-item:hover{border-color:var(--primary-light)}.category-item.active{background:var(--gradient-primary);color:#fff;box-shadow:var(--shadow-gold)}.category-name{font-size:13px;font-weight:500;white-space:nowrap}.balance-card{background:var(--gradient-luxury);border-radius:var(--border-radius-lg);padding:28px;margin:16px;color:#fff;position:relative;overflow:hidden;box-shadow:var(--shadow-lg)}.balance-card:before{content:"";position:absolute;top:-50%;right:-20%;width:200px;height:200px;background:radial-gradient(circle,rgba(212,175,55,.15) 0%,transparent 70%);border-radius:50%}.balance-card:after{content:"";position:absolute;bottom:0;left:0;right:0;height:4px;background:var(--gradient-gold)}.balance-label{font-size:14px;opacity:.85;margin-bottom:10px;letter-spacing:1px}.balance-amount{font-size:42px;font-weight:700;font-family:DIN,Arial,sans-serif;letter-spacing:2px}.balance-amount:before{content:"¥";font-size:24px;margin-right:4px;opacity:.9}.login-page{min-height:100vh;display:flex;flex-direction:column;background:var(--gradient-luxury);position:relative}.login-page:before{content:"";position:absolute;top:0;left:0;right:0;bottom:50%;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23D4AF37' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 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0;position:relative}.admin-sidebar:after{content:"";position:absolute;top:0;right:0;bottom:0;width:1px;background:linear-gradient(180deg,transparent,rgba(212,175,55,.3),transparent)}.admin-content{flex:1;background:var(--background-color);padding:28px}.admin-menu-item{display:flex;align-items:center;gap:14px;padding:16px 28px;color:#ffffffbf;text-decoration:none;transition:all .3s;position:relative}.admin-menu-item:hover,.admin-menu-item.active{background:#ffffff14;color:#fff}.admin-menu-item.active:before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:24px;background:var(--gradient-gold);border-radius:0 2px 2px 0}.captcha-container{display:flex;gap:12px}.captcha-input{flex:1}.captcha-image{height:48px;border-radius:var(--border-radius-sm);cursor:pointer;transition:transform .3s}.captcha-image:hover{transform:scale(1.05)}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:80px 20px;color:var(--text-light)}.empty-icon{font-size:72px;margin-bottom:20px;opacity:.4}.empty-text{font-size:16px;color:var(--text-secondary)}@keyframes spin{to{transform:rotate(360deg)}}.loading-spinner{width:44px;height:44px;border:3px solid var(--border-color);border-top-color:var(--primary-color);border-radius:50%;animation:spin .8s linear infinite}.order-status{display:inline-block;padding:5px 12px;border-radius:20px;font-size:12px;font-weight:500}.order-status-pending{background:linear-gradient(135deg,#ed6c0226,#ed6c021a);color:#ed6c02}.order-status-shipped{background:linear-gradient(135deg,#2196f326,#2196f31a);color:#2196f3}.order-status-completed{background:linear-gradient(135deg,#2e7d3226,#2e7d321a);color:#2e7d32}.order-status-cancelled{background:linear-gradient(135deg,#c6282826,#c628281a);color:#c62828}@media (max-width: 768px){.admin-sidebar{display:none}.product-grid{gap:12px;padding:12px}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.card{animation:fadeInUp .5s ease-out}.product-card{animation:fadeInUp .5s ease-out;animation-fill-mode:both}.product-card:nth-child(1){animation-delay:.1s}.product-card:nth-child(2){animation-delay:.15s}.product-card:nth-child(3){animation-delay:.2s}.product-card:nth-child(4){animation-delay:.25s}.product-card:nth-child(5){animation-delay:.3s}.product-card:nth-child(6){animation-delay:.35s}.form-input{width:100%;padding:14px 18px;border:2px solid var(--border-color);border-radius:var(--border-radius-sm);font-size:16px;transition:all .3s ease;background:#fafaf8}.form-input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #8b45131a;background:#fff}