*{margin:0;padding:0;box-sizing:border-box}
:root{--primary:#ff5000;--primary2:#ff6a00;--bg:#f7f7f7;--card:#fff;--text:#333;--text2:#666;--text3:#999;--border:#eee;--radius:12px;--safe-bottom:env(safe-area-inset-bottom)}
html{font-size:16px;-webkit-tap-highlight-color:transparent}
body{font-family:-apple-system,'PingFang SC','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--text);line-height:1.5;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
input,textarea,select,button{font-family:inherit;font-size:inherit;outline:none;border:none}
button{cursor:pointer;background:none}
.topbar{position:sticky;top:0;z-index:100;background:var(--card);border-bottom:1px solid var(--border);padding:10px 16px}
.topbar-inner{max-width:600px;margin:0 auto;display:flex;align-items:center;gap:12px}
.topbar-logo{display:flex;align-items:center;gap:6px;font-size:18px;font-weight:700;color:var(--primary);flex-shrink:0}
.topbar-logo img{width:32px;height:32px;border-radius:8px}
.topbar-search{flex:1}
.topbar-search input{width:100%;padding:8px 16px;background:var(--bg);border-radius:20px;font-size:14px;color:var(--text)}
.tabbar{position:fixed;bottom:0;left:0;right:0;z-index:100;background:var(--card);border-top:1px solid var(--border);display:flex;padding-bottom:var(--safe-bottom)}
.tabbar-item{flex:1;display:flex;flex-direction:column;align-items:center;padding:8px 0 6px;color:var(--text3);font-size:11px}
.tabbar-item.active{color:var(--primary)}
.tabbar-icon{font-size:22px;line-height:1;margin-bottom:2px}
.tabbar-label{font-size:11px}
.container{max-width:600px;margin:0 auto;padding:12px}
.banner-swipe{position:relative;overflow:hidden;border-radius:var(--radius);margin-bottom:16px}
.banner-track{display:flex;transition:transform .3s ease}
.banner-item{min-width:100%;position:relative}
.banner-item img{width:100%;height:auto;display:block}
.banner-dots{position:absolute;bottom:8px;left:50%;transform:translateX(-50%);display:flex;gap:6px}
.banner-dot{width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.5)}
.banner-dot.active{background:#fff}
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:20px;background:var(--card);border-radius:var(--radius);padding:16px 12px}
.cat-item{display:flex;flex-direction:column;align-items:center;gap:4px;font-size:12px;color:var(--text2)}
.cat-icon{font-size:32px}
.prod-section-title{font-size:18px;font-weight:700;margin-bottom:12px;display:flex;align-items:center;justify-content:space-between}
.prod-section-title span{font-size:13px;color:var(--text3);font-weight:400}
.prod-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.prod-card{background:var(--card);border-radius:var(--radius);overflow:hidden;transition:transform .2s}
.prod-card:active{transform:scale(.98)}
.prod-card img{width:100%;height:180px;object-fit:cover;background:#f0f0f0}
.prod-card-body{padding:10px 12px}
.prod-card-title{font-size:14px;line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:6px;min-height:36px}
.prod-card-price{font-size:18px;font-weight:700;color:var(--primary)}
.prod-card-price small{font-size:12px;font-weight:400}
.prod-card-meta{display:flex;justify-content:space-between;font-size:11px;color:var(--text3);margin-top:4px}
.prod-card-tag{display:inline-block;padding:2px 6px;background:#fff5f0;color:var(--primary);border-radius:4px;font-size:10px;margin-bottom:4px}
.section{margin-bottom:20px}
.detail-img{width:100%;height:300px;object-fit:cover;background:#f0f0f0}
.detail-body{background:var(--card);padding:16px;border-radius:var(--radius);margin-bottom:12px}
.detail-price{font-size:28px;font-weight:700;color:var(--primary);margin-bottom:8px}
.detail-price small{font-size:14px}
.detail-orig{font-size:14px;color:var(--text3);text-decoration:line-through;margin-left:8px}
.detail-title{font-size:18px;font-weight:600;margin-bottom:8px}
.detail-meta{display:flex;gap:12px;font-size:13px;color:var(--text3);flex-wrap:wrap}
.detail-meta span{display:inline-flex;align-items:center;gap:4px}
.detail-desc{background:var(--card);padding:16px;border-radius:var(--radius);margin-bottom:80px;line-height:1.8}
.detail-bar{position:fixed;bottom:0;left:0;right:0;z-index:100;background:var(--card);border-top:1px solid var(--border);display:flex;align-items:center;padding:12px 16px;gap:12px;max-width:600px;margin:0 auto}
.detail-bar-icon{font-size:24px;color:var(--text2);text-align:center;font-size:12px}
.detail-bar-icon span{display:block;font-size:20px}
.detail-chat{flex:1;background:var(--primary);color:#fff;padding:12px;border-radius:24px;text-align:center;font-size:16px;font-weight:600}
.form-box{max-width:500px;margin:20px auto;padding:20px;background:var(--card);border-radius:var(--radius)}
.form-group{margin-bottom:16px}
.form-label{display:block;margin-bottom:6px;font-size:14px;color:var(--text2);font-weight:600}
.form-input,.form-textarea,.form-select{width:100%;padding:12px 16px;background:var(--bg);border-radius:8px;font-size:15px;color:var(--text)}
.form-textarea{min-height:100px;resize:vertical}
.form-row{display:flex;gap:12px}
.form-row .form-group{flex:1}
.btn{display:inline-block;padding:12px 24px;border-radius:8px;font-size:16px;font-weight:600;text-align:center}
.btn-primary{background:var(--primary);color:#fff}
.btn-outline{border:1px solid var(--primary);color:var(--primary);background:transparent}
.btn-block{display:block;width:100%}
.upload-area{border:2px dashed var(--border);border-radius:8px;padding:30px;text-align:center;color:var(--text3);margin-bottom:12px}
.upload-area:active{border-color:var(--primary)}
.user-header{background:linear-gradient(135deg,var(--primary),var(--primary2));padding:30px 20px;color:#fff;border-radius:0 0 20px 20px;margin-bottom:16px}
.user-avatar{width:60px;height:60px;border-radius:50%;background:rgba(255,255,255,.3);display:flex;align-items:center;justify-content:center;font-size:30px;margin-bottom:8px}
.user-name{font-size:20px;font-weight:700}
.user-menu{background:var(--card);border-radius:var(--radius);overflow:hidden}
.user-menu-item{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid var(--border)}
.user-menu-item:last-child{border-bottom:none}
.user-menu-item:active{background:var(--bg)}
.user-menu-icon{font-size:20px;margin-right:12px}
.user-menu-text{flex:1;font-size:15px}
.user-menu-arrow{color:var(--text3)}
.empty{text-align:center;padding:60px 20px;color:var(--text3)}
.empty-icon{font-size:48px;margin-bottom:12px}
.footer{background:var(--card);padding:20px;text-align:center;color:var(--text3);font-size:13px;margin-bottom:60px}
.footer-links{margin-top:8px;display:flex;justify-content:center;gap:16px}
.footer-links a{color:var(--text2)}
.page-content{background:var(--card);padding:20px;border-radius:var(--radius);line-height:1.8;min-height:50vh}
.page-content h1{font-size:22px;margin-bottom:16px}
.search-bar{background:var(--card);padding:12px;border-radius:var(--radius);margin-bottom:16px}
.search-bar form{display:flex;gap:8px}
.search-bar input{flex:1;padding:10px 16px;background:var(--bg);border-radius:20px}
.search-bar button{padding:10px 20px;background:var(--primary);color:#fff;border-radius:20px;font-weight:600}
.filter-bar{display:flex;gap:8px;margin-bottom:16px;overflow-x:auto;padding-bottom:4px}
.filter-chip{padding:6px 16px;background:var(--card);border-radius:20px;font-size:13px;color:var(--text2);white-space:nowrap}
.filter-chip.active{background:var(--primary);color:#fff}
.admin-body{background:#f0f2f5}
.admin-topbar{background:var(--primary);color:#fff;padding:12px 20px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100}
.admin-topbar a{color:#fff}
.admin-sidebar{position:fixed;left:0;top:48px;bottom:0;width:200px;background:#fff;border-right:1px solid var(--border);padding:16px 0;overflow-y:auto}
.admin-sidebar a{display:block;padding:10px 20px;color:var(--text2);font-size:14px}
.admin-sidebar a:hover,.admin-sidebar a.active{background:#fff5f0;color:var(--primary)}
.admin-content{margin-left:200px;padding:20px;max-width:1000px}
.panel{background:#fff;border-radius:8px;padding:20px;margin-bottom:20px;box-shadow:0 1px 3px rgba(0,0,0,.08)}
.panel-title{font-size:18px;font-weight:700;margin-bottom:16px}
.panel table{width:100%;border-collapse:collapse}
.panel th,.panel td{padding:10px 8px;border-bottom:1px solid var(--border);text-align:left;font-size:14px}
.panel th{background:#fafafa;font-weight:600}
.panel .btn-sm{padding:4px 12px;font-size:12px;border-radius:4px}
.field{margin-bottom:16px}
.field label{display:block;margin-bottom:6px;font-weight:600;font-size:14px}
.field input,.field textarea,.field select{width:100%;padding:8px 12px;border:1px solid var(--border);border-radius:4px;font-size:14px}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--primary)}
.admin-btn{padding:8px 16px;border-radius:4px;font-size:14px;font-weight:600;cursor:pointer}
.admin-btn-primary{background:var(--primary);color:#fff;border:none}
.admin-btn-danger{background:#ff4d4f;color:#fff;border:none}
.admin-btn-outline{border:1px solid var(--border);background:#fff;color:var(--text)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:20px}
.stat-card{background:#fff;border-radius:8px;padding:20px;text-align:center}
.stat-num{font-size:28px;font-weight:700;color:var(--primary)}
.stat-label{font-size:13px;color:var(--text3);margin-top:4px}
.toast{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:rgba(0,0,0,.8);color:#fff;padding:12px 24px;border-radius:8px;z-index:9999;font-size:14px}
@media(min-width:768px){.container{max-width:800px}.prod-grid{grid-template-columns:repeat(3,1fr)}}
@media(min-width:1024px){.container{max-width:1000px}.prod-grid{grid-template-columns:repeat(4,1fr)}}