/* ===== 主题六：品牌商城（按 relx.hk 源码架构：公告条+顶导航+大海报+品牌墙+热销5列+答疑+橙色页脚） ===== */
:root { --brx-orange: #ff6900; --brx-text: #171717; --brx-line: #ededed; }
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', 'Assistant', sans-serif; background: #fff; color: var(--brx-text); line-height: 1.7; overflow-x: hidden; }
.inner { max-width: 1120px; margin: 0 auto; padding: 0 16px; }

/* ===== 顶部公告条（relx：浅蓝底蓝字） ===== */
.top-strip { background: #eaf6ff; color: #0b5fb3; font-size: 14px; text-align: center; padding: 10px 16px; }

/* ===== 顶导航（relx：Logo左 + 菜单居中 + 右侧图标） ===== */
.site-header { background: #fff; border-bottom: 1px solid var(--brx-line); position: sticky; top: 0; z-index: 10; }
.site-header .inner { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; height: 64px; }
.brand { font-size: 24px; font-weight: 800; color: var(--brx-text); text-decoration: none; letter-spacing: 1px; justify-self: start; }
.site-header nav { display: flex; justify-content: center; gap: 2px; }
.site-header nav a { padding: 8px 13px; color: #333; text-decoration: none; font-size: 14px; border-radius: 4px; transition: all .15s; }
.site-header nav a:hover { color: var(--brx-orange); background: #fff7f0; }
.site-header nav a.active, .site-header nav a.nav-btn { color: var(--brx-orange); font-weight: 600; }
.header-right { justify-self: end; display: flex; align-items: center; gap: 12px; font-size: 13px; color: #555; }
.header-right a { color: #555; text-decoration: none; }
.header-right a:hover { color: var(--brx-orange); }
@media (max-width: 980px) {
  .site-header .inner { grid-template-columns: 1fr auto; }
  .site-header nav { display: none; }
}

/* ===== 大海报（relx：渐变底+大标题+承诺图标+支付图标，无图也可用） ===== */
.hero { width: 100%; background: linear-gradient(115deg, #eaf6ff 0%, #c4e4ff 40%, #7ec1f5 75%, #4d94f7 100%); overflow: hidden; position: relative; }
.hero-bg { position: absolute; inset: 0; background-image: radial-gradient(circle at 12% 85%, rgba(255,255,255,.55) 0, transparent 30%), radial-gradient(circle at 88% 18%, rgba(255,255,255,.4) 0, transparent 28%), radial-gradient(circle at 65% 92%, rgba(255,255,255,.3) 0, transparent 24%); }
.hero-img { width: 100%; height: auto; display: block; }
.hero-inner { position: relative; max-width: 1120px; margin: 0 auto; padding: 52px 18px 44px; display: grid; grid-template-columns: 1.15fr 1fr; align-items: center; gap: 24px; }
.hero-left { color: #fff; }
.hero-brand-line { font-size: 13px; letter-spacing: 4px; text-transform: uppercase; opacity: .85; margin-bottom: 12px; }
.hero-title { font-size: clamp(30px, 4vw, 46px); font-weight: 800; line-height: 1.2; letter-spacing: 2px; text-shadow: 0 2px 14px rgba(20,80,170,.25); }
.hero-sub { font-size: 16px; margin-top: 14px; opacity: .95; }
.hero-promises { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
.hero-promise { display: flex; align-items: center; gap: 10px; background: rgba(255,255,255,.18); border: 1px solid rgba(255,255,255,.4); border-radius: 40px; padding: 8px 18px 8px 10px; }
.hero-promise .hp-icon { width: 34px; height: 34px; border-radius: 50%; background: #fff; color: #2f6fd0; display: flex; align-items: center; justify-content: center; font-size: 15px; font-weight: 800; }
.hero-promise .hp-en { font-size: 11px; text-transform: uppercase; letter-spacing: 1px; opacity: .8; }
.hero-promise .hp-cn { font-size: 14px; font-weight: 700; }
.hero-pay { display: flex; align-items: center; gap: 12px; margin-top: 24px; flex-wrap: wrap; }
.hero-pay .pay-label { font-size: 12px; opacity: .85; }
.pay-chip { background: #fff; color: #31527e; border-radius: 6px; padding: 5px 12px; font-size: 12px; font-weight: 600; box-shadow: 0 2px 6px rgba(20,80,170,.12); }
.hero-right { display: flex; justify-content: center; align-items: center; }
.hero-art { width: 280px; height: 260px; position: relative; }
.hero-box { position: absolute; width: 150px; height: 150px; border-radius: 18px; background: linear-gradient(145deg, #ffffff, #dcecff); box-shadow: 0 18px 40px rgba(20,80,170,.25); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; transform: rotate(-6deg); }
.hero-box.b1 { top: 6px; left: 0; }
.hero-box.b2 { bottom: 8px; right: 0; transform: rotate(7deg); }
.hero-box .box-logo { font-size: 22px; font-weight: 900; color: #2f6fd0; letter-spacing: 1px; text-align: center; padding: 0 12px; }
.hero-box .box-tag { font-size: 10px; color: #8aa5c8; border: 1px solid #cfe0f5; border-radius: 4px; padding: 1px 6px; }
.hero-ribbon { position: absolute; top: 44%; left: 50%; transform: translate(-50%,-50%) rotate(-16deg); background: #2f6fd0; color: #fff; font-weight: 800; font-size: 14px; padding: 8px 26px; border-radius: 8px; box-shadow: 0 8px 18px rgba(20,80,170,.3); white-space: nowrap; }
.hero-cta { margin-top: 26px; }
.hero-cta a { display: inline-block; background: #fff; color: #2f6fd0; font-weight: 700; font-size: 15px; padding: 12px 34px; border-radius: 40px; text-decoration: none; box-shadow: 0 8px 20px rgba(20,80,170,.18); }
@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; padding-top: 36px; }
  .hero-title { font-size: 30px; }
  .hero-art { display: none; }
}

/* ===== SEO简介（居中大标题+段） ===== */
.seo-intro { max-width: 960px; margin: 0 auto; padding: 28px 18px 18px; text-align: center; }
.seo-intro h1 { margin: 0 0 12px; color: var(--brx-text); font-size: clamp(26px, 3vw, 38px); line-height: 1.25; font-weight: 700; }
.seo-intro p { margin: 0 auto; max-width: 820px; color: #555; font-size: 15px; line-height: 1.8; }

/* ===== 品牌墙（relx：4列logo灰底） ===== */
.brand-wall { max-width: 1180px; margin: 0 auto; padding: 14px 18px 60px; }
.brand-wall .bw-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 42px 10px; }
.bw-item { display: block; height: 74px; background: #e9e9e9; overflow: hidden; text-decoration: none; transition: transform .18s ease; }
.bw-item:hover { transform: translateY(-2px); }
.bw-item img { display: block; width: 100%; height: 100%; max-width: none; max-height: none; object-fit: cover; filter: none; background: #e9e9e9; }
.bw-item .bw-name { display: flex; align-items: center; justify-content: center; height: 100%; font-size: 15px; font-weight: 700; color: #333; background: #e9e9e9; }

/* ===== 区块标题（relx：橙色居中） ===== */
.cat-section { max-width: 1120px; margin: 0 auto; padding: 18px 18px 8px; }
.cat-title { margin: 0; color: var(--brx-orange); font-size: 20px; font-weight: 500; text-align: center; }
.cat-title a { color: inherit; text-decoration: none; }
.cat-sub { text-align: center; color: #888; font-size: 13px; margin: 6px 0 0; }

/* ===== 热销网格（relx：5列卡片，方图+3行标题+价格） ===== */
.products { max-width: 1120px; margin: 0 auto; padding: 0 18px; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); column-gap: 24px; row-gap: 48px; }
.card { position: relative; display: block; color: inherit; text-decoration: none; }
.card-imgbox { position: relative; height: 220px; display: grid; place-items: end center; margin-bottom: 12px; }
.card img, .card-image-placeholder { max-width: 100%; max-height: 218px; width: auto; height: auto; object-fit: contain; transition: transform .18s ease; background: #fff; }
.card-image-placeholder { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; width: 100%; height: 218px; border: 1.5px dashed #ffd9b8; border-radius: 12px; background: linear-gradient(160deg, #fff8f1, #fff1e2); color: #ff9a4d; }
.card-image-placeholder .ph-icon { opacity: .8; }
.card-image-placeholder .ph-text { font-size: 13px; font-weight: 600; color: #e07c2c; }
.card-image-placeholder .ph-hint { font-size: 11px; color: #c89a6b; }
.card:hover .card-imgbox img, .card:hover .card-image-placeholder { transform: translateY(-4px); }
.card h3 { min-height: 58px; margin: 0 0 8px; font-size: 14px; line-height: 1.45; font-weight: 500; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; }
.card h3 a { color: inherit; text-decoration: none; }
.card h3 a:hover { color: var(--brx-orange); }
.price-row { display: flex; align-items: baseline; gap: 6px; }
.price { margin: 0; font-size: 15px; color: #333; letter-spacing: .04em; }
.price::before { content: '¥'; margin-right: 1px; }
.price-old { color: #bbb; text-decoration: line-through; font-size: 13px; }
.price-old::before { content: '¥'; }
.price.big { font-size: 20px; color: #333; }
.price-old.big { font-size: 14px; }
.card-body p.desc { font-size: 12px; color: #999; margin: 4px 0 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.tag-row { margin: 4px 0 8px; }
.cat-tag { display: inline-block; margin: 2px 4px 2px 0; padding: 1px 8px; font-size: 11px; color: var(--brx-orange); background: #fff3e8; border-radius: 10px; }
.tag-badge { display: inline-block; margin: 2px 4px 2px 0; padding: 1px 8px; font-size: 11px; color: #fff; background: var(--brx-orange); border-radius: 10px; }
.tag-new { display: inline-block; margin: 2px 4px 2px 0; padding: 1px 8px; font-size: 11px; color: #fff; background: #52c41a; border-radius: 10px; }
.card-btn { display: none; }
.more-wrap { display: flex; justify-content: center; padding: 34px 18px 42px; }
.more-btn { color: var(--brx-orange); border: 1px solid var(--brx-orange); border-radius: 14px; min-width: 124px; padding: 12px 24px; text-align: center; text-decoration: none; font-weight: 500; }
.more-btn:hover { background: var(--brx-orange); color: #fff; }
@media (max-width: 980px) { .products { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 700px) {
  .products { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 14px; row-gap: 34px; padding: 0 14px; }
  .brand-wall { padding: 10px 14px 32px; }
  .brand-wall .bw-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 6px; }
  .bw-item { height: auto; aspect-ratio: 3.55 / 1; }
  .card-imgbox { height: clamp(142px, 42vw, 170px); }
}

/* ===== 售前答疑（折叠） ===== */
.faq { max-width: 720px; margin: 0 auto; padding: 0 18px 28px; }
.faq h2 { margin: 0; color: var(--brx-orange); font-size: 20px; font-weight: 500; text-align: center; margin-bottom: 28px; }
.faq details { border-top: 1px solid #e2e2e2; }
.faq details:last-child { border-bottom: 1px solid #e2e2e2; }
.faq summary { cursor: pointer; list-style: none; padding: 15px 4px; font-size: 15px; display: flex; justify-content: space-between; gap: 18px; }
.faq summary::before { content: "◌"; color: #111; margin-right: 8px; }
.faq summary::after { content: "⌄"; color: #555; }
.faq p { margin: 0 0 16px 30px; color: #555; line-height: 1.7; }

/* ===== 三栏服务 ===== */
.service { max-width: 1120px; margin: 0 auto; padding: 20px 18px 58px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); text-align: center; gap: 36px; }
.service h3 { margin: 0 0 14px; color: var(--brx-orange); font-size: 18px; }
.service p { margin: 0; color: #555; line-height: 1.7; }
@media (max-width: 700px) { .service { grid-template-columns: 1fr; } }

/* ===== 橙色页脚（relx：橙色大色块4列） ===== */
.site-footer { background: var(--brx-orange); color: #fff; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 38px; padding: 42px max(18px, calc((100vw - 1120px) / 2)) 62px; margin-top: 0; }
.site-footer h3 { margin: 0 0 22px; color: #fff; font-size: 18px; font-weight: 700; }
.site-footer a { display: block; color: #fff; text-decoration: none; margin: 0 0 13px; font-size: 14px; }
.site-footer a:hover { opacity: .85; }
.site-footer p { margin: 0 0 13px; font-size: 14px; color: #fff; }
.footer-note { color: rgba(255,255,255,.75); font-size: 12px; margin-top: 8px; }
@media (max-width: 700px) { .site-footer { grid-template-columns: 1fr; gap: 18px; } }

/* ===== 页面头（列表页/分类页） ===== */
.page-head { max-width: 1120px; margin: 0 auto; padding: 44px 18px 12px; text-align: center; }
.page-head h1 { font-size: 30px; color: var(--brx-text); letter-spacing: 1px; }
.page-head-sub { margin-top: 10px; color: #888; font-size: 14px; }
.page-head-meta { display: inline-block; margin-top: 14px; padding: 5px 16px; background: #fff3e8; color: var(--brx-orange); border-radius: 20px; font-size: 13px; }

/* ===== 分类页/详情页 ===== */
.cat-page { max-width: 1120px; margin: 0 auto; padding: 24px 18px 6px; }
.cat-page-title { font-size: 24px; color: var(--brx-text); text-align: center; }
.cat-page-desc { color: #888; margin-top: 6px; text-align: center; }
.toolbar { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; margin: 14px auto 26px; padding: 10px 14px; background: #fafafa; border: 1px solid var(--brx-line); border-radius: 8px; font-size: 13px; color: #666; }
.toolbar .tool-count { font-weight: 600; color: #333; }
.toolbar select { padding: 5px 10px; border: 1px solid #ddd; border-radius: 4px; background: #fff; font-size: 13px; color: #333; cursor: pointer; }
.tool-view button { padding: 5px 12px; border: 1px solid #ddd; border-radius: 4px; background: #fff; font-size: 13px; cursor: pointer; }
.tool-view button.active { background: var(--brx-orange); border-color: var(--brx-orange); color: #fff; }
.list-item { max-width: 860px; margin: 0 auto 12px; background: #fff; border: 1px solid var(--brx-line); border-radius: 8px; padding: 14px 18px; }
.list-item h3 a { color: #333; text-decoration: none; }
.list-item h3 a:hover { color: var(--brx-orange); }
.list-date { color: #bbb; font-size: 12px; }
.list-item p { color: #777; font-size: 14px; }
.detail { max-width: 1120px; margin: 0 auto; padding: 20px 18px 50px; }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; background: #fff; border: 1px solid var(--brx-line); border-radius: 8px; padding: 26px; }
.gallery-main { border-radius: 8px; overflow: hidden; background: #fff; border: 1px solid var(--brx-line); }
.gallery-img { width: 100%; max-height: 440px; object-fit: contain; display: none; }
.gallery-img.active { display: block; }
.gallery-thumbs { display: flex; gap: 10px; margin-top: 10px; flex-wrap: wrap; }
.gallery-thumbs .thumb { width: 76px; height: 76px; object-fit: contain; background: #fff; border-radius: 6px; cursor: pointer; border: 2px solid transparent; opacity: .7; }
.gallery-thumbs .thumb.active { border-color: var(--brx-orange); opacity: 1; }
.detail h1 { font-size: 24px; margin: 0 0 8px; }
.detail-tags { margin-bottom: 6px; }
.price-row.detail-price { margin: 10px 0 14px; padding: 12px 14px; background: #fff7f0; border-radius: 8px; justify-content: flex-start; }
.spec-table { width: 100%; border-collapse: collapse; margin: 12px 0 18px; }
.spec-table th { text-align: left; width: 110px; padding: 9px 12px; background: #fafafa; color: #666; font-weight: 600; border: 1px solid var(--brx-line); }
.spec-table td { padding: 9px 12px; color: #444; border: 1px solid var(--brx-line); }
.detail .content { margin: 14px 0 24px; color: #555; }
.contact-box { background: #fff7f0; border: 1px solid #ffd9b8; border-radius: 8px; padding: 16px 18px; color: #555; }
.contact-box p { margin: 3px 0; }
.contact-btn { display: inline-block; margin-top: 10px; padding: 10px 28px; border-radius: 14px; background: var(--brx-orange); color: #fff; text-decoration: none; font-weight: 500; }
.contact-btn:hover { opacity: .9; }
@media (max-width: 720px) { .detail-grid { grid-template-columns: 1fr; } }

/* 客户好评 */
.testi-grid { max-width: 1120px; margin: 0 auto; padding: 0 18px 20px; display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.testi-card { background: #fff; border: 1px solid var(--brx-line); border-radius: 10px; padding: 18px 20px; }
.testi-stars { color: #f7b500; font-size: 15px; letter-spacing: 2px; }
.testi-text { color: #555; font-size: 14px; margin: 8px 0; }
.testi-author { color: #98a1b0; font-size: 13px; text-align: right; }

.back-top { position: fixed; right: 24px; bottom: 30px; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--brx-orange); color: #fff; font-size: 20px; cursor: pointer; box-shadow: 0 2px 10px rgba(255,105,0,.35); z-index: 99; }