/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;font-size:14px;line-height:1.6;color:#333;background:#f0f0f0}
a{color:#1a8cff;text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}
button{cursor:pointer;border:none;background:none;font:inherit}

/* ===== Layout ===== */
.container{max-width:1080px;margin:0 auto;padding:0 15px}

/* ===== Header ===== */
.site-header{background:#2b2b2b;position:sticky;top:0;z-index:100;box-shadow:0 2px 6px rgba(0,0,0,.25)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:56px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo:hover{text-decoration:none}
.logo-icon{width:36px;height:36px;background:linear-gradient(135deg,#555 0%,#333 100%);border-radius:6px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.logo-icon svg{width:22px;height:22px}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-title{color:#4db8ff;font-size:18px;font-weight:700;letter-spacing:.5px}
.logo-sub{color:#aaa;font-size:11px}
.main-nav{display:flex;align-items:center;gap:0}
.main-nav a{color:#e0e0e0;padding:8px 18px;font-size:14px;white-space:nowrap;transition:color .2s}
.main-nav a:hover{color:#4db8ff;text-decoration:none}

/* ===== Notice ===== */
.notice-section{padding:16px 0 0}
.notice-box{background:#e8f8f0;border:1px solid #a8d8c0;border-radius:4px;padding:14px 20px;line-height:1.9;font-size:13px;color:#444}
.notice-box .highlight-red{color:#e53935;font-weight:600}
.notice-box .highlight-blue{color:#1a8cff}
.notice-box p{margin-bottom:4px}
.notice-box p:last-child{margin-bottom:0}

/* ===== Product Cards ===== */
.products-section{padding:16px 0 8px}
.product-category{margin-bottom:14px;background:#fff;border-radius:4px;overflow:hidden;box-shadow:0 1px 4px rgba(0,0,0,.08)}
.category-bar{display:flex;align-items:center;justify-content:space-between;background:#e8e8e8;padding:10px 16px;border-bottom:1px solid #ddd}
.category-title{font-size:15px;font-weight:700;color:#333}
.category-title span{color:#666;font-weight:400}
.category-cols{display:flex;align-items:center;gap:0;font-size:12px;color:#888}
.category-cols span{display:inline-block;text-align:center}
.col-delivery{width:90px}
.col-stock{width:60px}
.col-price{width:80px}
.col-action{width:80px}

.product-list{background:#fff}

/* Mobile-first card layout */
.product-card{display:flex;align-items:flex-start;gap:10px;padding:10px 12px;border-bottom:1px solid #eee;background:#fff}
.product-card:last-child{border-bottom:none}

.product-thumb{flex:0 0 88px;width:88px;height:88px}
.product-icon{width:88px;height:88px;border-radius:2px;background:#f8f8f8;display:flex;align-items:center;justify-content:center;flex-shrink:0;border:1px solid #eee;overflow:hidden}
.product-icon svg{width:44px;height:44px}

.product-body{flex:1;min-width:0}

.product-line1{display:flex;align-items:flex-start;gap:5px;margin-bottom:8px}
.badge-auto{display:inline-block;flex-shrink:0;background:#00a67c;color:#fff;font-size:11px;padding:2px 6px;border-radius:3px;line-height:1.5;white-space:nowrap;margin-top:2px}
.product-name{font-size:13px;font-weight:600;color:#222;line-height:1.5;margin:0;white-space:normal;word-break:break-word;flex:1;min-width:0}

.product-line2{display:flex;align-items:center;gap:20px}
.product-stock{font-size:13px;color:#333;white-space:nowrap}
.stock-num{font-weight:600}
.stock-available{color:#00a67c}
.stock-empty{color:#bbb}

.product-price{font-size:15px;font-weight:700;color:#e53935;white-space:nowrap}

.btn-buy{flex-shrink:0;display:inline-block;background:#ffb800;color:#fff;font-size:14px;font-weight:600;padding:10px 16px;border-radius:4px;text-decoration:none;text-align:center;transition:background .15s;margin-top:2px}
.btn-buy:hover{background:#e6a600;text-decoration:none;color:#fff}
.btn-buy:active{background:#cc9500}

/* ===== FAQ Section ===== */
.faq-section{padding:20px 0 10px}
.section-title{text-align:center;font-size:20px;font-weight:700;color:#333;margin-bottom:18px;padding-bottom:10px;border-bottom:2px solid #e0e0e0}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 30px}
.faq-column h3{font-size:15px;font-weight:700;color:#333;margin-bottom:12px;padding-left:4px}
.faq-item{margin-bottom:16px}
.faq-q{display:flex;align-items:flex-start;gap:8px;margin-bottom:6px}
.faq-num{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;background:#26a69a;color:#fff;font-size:12px;font-weight:700;border-radius:3px;flex-shrink:0;margin-top:1px}
.faq-q-text{font-size:14px;font-weight:700;color:#222;line-height:1.5}
.faq-a{padding-left:30px;font-size:13px;color:#666;line-height:1.8}
.faq-more{text-align:center;margin-top:20px}
.btn-more{display:inline-block;background:linear-gradient(180deg,#ffc107 0%,#ff9800 100%);color:#fff;font-size:14px;font-weight:600;padding:10px 40px;border-radius:4px;box-shadow:0 2px 6px rgba(255,152,0,.3);transition:transform .15s;text-decoration:none}
.btn-more:hover{transform:translateY(-1px);text-decoration:none;color:#fff}

/* ===== Tags ===== */
.tags-section{padding:16px 0 20px}
.tags-cloud{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;padding:10px 0}
.tag-item{display:inline-block;background:#f0f0f0;color:#666;font-size:12px;padding:5px 14px;border-radius:4px;border:1px solid #e0e0e0}

/* ===== Footer ===== */
.site-footer{padding:0 0 0}
.contact-box{background:#fff;border:1px solid #e0e0e0;border-radius:4px;padding:24px 30px;margin-bottom:0;display:flex;align-items:center;justify-content:center;gap:30px}
.qr-placeholder{width:120px;height:120px;background:#f5f5f5;border:1px solid #ddd;border-radius:4px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.qr-placeholder svg{width:100px;height:100px}
.contact-info h4{font-size:16px;color:#333;margin-bottom:8px}
.contact-info p{font-size:13px;color:#888;line-height:1.8}
.copyright-bar{background:#e8e8e8;text-align:center;padding:14px;font-size:12px;color:#888;margin-top:16px}

/* ===== Floating Search ===== */
.float-search{position:fixed;right:24px;bottom:80px;width:44px;height:44px;background:#e53935;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 3px 10px rgba(229,57,53,.4);z-index:99;transition:transform .2s,box-shadow .2s}
.float-search:hover{transform:scale(1.08);box-shadow:0 4px 14px rgba(229,57,53,.5)}
.float-search svg{width:20px;height:20px;fill:#fff}

/* ===== Search Modal ===== */
.search-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:200;align-items:flex-start;justify-content:center;padding-top:120px}
.search-overlay.active{display:flex}
.search-modal{position:relative;background:#fff;border-radius:6px;padding:20px 24px;width:90%;max-width:500px;box-shadow:0 8px 30px rgba(0,0,0,.2)}
.search-modal h3{font-size:16px;margin-bottom:12px;color:#333}
.search-input-wrap{display:flex;gap:8px}
.search-input{flex:1;padding:10px 14px;border:1px solid #ddd;border-radius:4px;font-size:14px;outline:none}
.search-input:focus{border-color:#26a69a}
.btn-search-submit{background:#26a69a;color:#fff;padding:10px 20px;border-radius:4px;font-size:14px;font-weight:600}
.btn-search-submit:hover{background:#1e8c82}
.search-close{position:absolute;top:16px;right:20px;font-size:22px;color:#999;cursor:pointer;line-height:1}
.search-close:hover{color:#333}

/* ===== Utility ===== */
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ===== Desktop Table Layout ===== */
@media(min-width:901px){
  .product-card{
    display:grid;
    grid-template-columns:40px minmax(0,1fr) 90px 60px 80px 80px;
    align-items:center;
    margin-top:0;
    gap:0 12px;
    padding:12px 16px;
    border-bottom:1px solid #f0f0f0
  }
  .product-card:nth-child(even){background:#fafafa}
  .product-card>meta{display:none}
  .product-body{display:contents}
  .product-line1{display:contents}
  .product-line2{display:contents}

  .product-thumb{grid-column:1;grid-row:1;width:40px;height:40px;flex:none}
  .product-icon{width:40px;height:40px;border-radius:6px}
  .product-icon svg{width:24px;height:24px}

  .product-name{
    grid-column:2;grid-row:1;
    white-space:normal;
    word-break:break-word;
    font-weight:400;
    font-size:13px;
    color:#333;
    line-height:1.7
  }

  .badge-auto{grid-column:3;grid-row:1;justify-self:center;border-radius:12px;padding:3px 10px;font-size:12px;background:#26a69a}

  .product-stock{grid-column:4;grid-row:1;justify-self:center;text-align:center;font-size:14px;font-weight:600}
  .stock-label{display:none}

  .product-price{grid-column:5;grid-row:1;justify-self:center;text-align:center;font-size:15px}

  .btn-buy{
    grid-column:6;grid-row:1;justify-self:center;
    margin-top:0;
    padding:6px 18px;font-size:13px;
    background:linear-gradient(180deg,#ffc107 0%,#ff9800 100%);
    box-shadow:0 2px 4px rgba(255,152,0,.35)
  }
  .btn-buy:hover{transform:translateY(-1px);box-shadow:0 3px 8px rgba(255,152,0,.45);background:linear-gradient(180deg,#ffc107 0%,#ff9800 100%)}
}

/* ===== Responsive ===== */
@media(max-width:900px){
  .faq-grid{grid-template-columns:1fr;gap:0}
  .category-cols{display:none}
  .products-section .container{padding:0}
  .product-category{border-radius:0;margin-bottom:10px;box-shadow:none}
  .category-bar{padding:10px 12px}
  .main-nav a{padding:8px 10px;font-size:13px}
  .contact-box{flex-direction:column;text-align:center}
}
@media(max-width:600px){
  .header-inner{flex-wrap:wrap;height:auto;padding:8px 0}
  .main-nav{flex-wrap:wrap;justify-content:center;width:100%}
  .logo-title{font-size:16px}
  .product-thumb{flex:0 0 80px;width:80px;height:80px}
  .product-icon{width:80px;height:80px}
  .product-icon svg{width:40px;height:40px}
  .btn-buy{padding:8px 12px;font-size:13px}
}