/* =========================================================
   GEO 站点模板 · 参考站（sfshouji.com）风格
   白底 / 红点缀 / 无衬线 / 密集商品流；品牌色走 CSS 变量
   ========================================================= */

:root {
  --primary: #b02025;
  --accent: #c8a15a;
  --ink: #222;
  --paper: #fff;
  --soft: #f5f5f5;
  --soft-2: #fafafa;
  --line: #e6e6e6;
  --muted: #777;
  --white: #fff;
  --sans: "Poppins", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --kai: "KaiTi", "STKaiti", "Kaiti SC", "Songti SC", serif;
  --radius: 0;
  --container: 1240px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; overflow-x: clip; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: #343333;
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary); }
h1, h2, h3, h4, h5 {
  font-family: var(--sans);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.35;
  margin: 0 0 0.6em;
  letter-spacing: 0.01em;
}
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.3em; }

.container { width: min(var(--container), calc(100% - 48px)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------- 头部 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 96px; }
.brand-lockup { display: flex; align-items: center; gap: 14px; flex: none; }
.brand-mark {
  width: 52px; height: 52px; display: grid; place-items: center;
  background: var(--primary); color: #fff;
  font-family: var(--kai); font-size: 30px; line-height: 1;
}
.brand-name { font-family: var(--kai); font-size: 28px; letter-spacing: 0.12em; line-height: 1.1; display: block; color: var(--ink); }
.brand-sub { display: block; font-size: 11px; letter-spacing: 0.18em; color: #999; margin-top: 5px; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav__item { position: relative; }
.nav__link {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 10px 22px; font-size: 15px; color: #333;
  border-bottom: 2px solid transparent; transition: 0.2s;
}
.nav__link:hover, .nav__item.is-active > .nav__link { color: var(--primary); border-color: var(--primary); }
.nav__link .caret { width: 7px; height: 7px; border-right: 1px solid currentColor; border-bottom: 1px solid currentColor; transform: rotate(45deg) translateY(-2px); opacity: 0.55; }
.nav__menu {
  position: absolute; top: 100%; left: 0; min-width: 190px; margin: 0; padding: 8px 0;
  list-style: none; background: #fff; border: 1px solid var(--line);
  box-shadow: 0 12px 30px -12px rgba(0, 0, 0, 0.18);
  opacity: 0; visibility: hidden; transform: translateY(4px); transition: 0.2s var(--ease);
  z-index: 5;
}
.nav__item:hover .nav__menu, .nav__item:focus-within .nav__menu { opacity: 1; visibility: visible; transform: translateY(0); }
.nav__menu a { display: block; padding: 9px 20px; font-size: 14px; color: #444; }
.nav__menu a:hover { background: var(--soft); color: var(--primary); }
.nav__toggle {
  display: none; width: 44px; height: 44px; border: 1px solid var(--line); background: #fff;
  align-items: center; justify-content: center; cursor: pointer;
}
.nav__toggle span, .nav__toggle span::before, .nav__toggle span::after {
  display: block; width: 20px; height: 1.5px; background: #333; position: relative; content: "";
}
.nav__toggle span::before { position: absolute; top: -6px; }
.nav__toggle span::after { position: absolute; top: 6px; }

/* 首页：头部压在首屏图上（参考站形态） */
.site-header--overlay { position: absolute; top: 0; left: 0; right: 0; background: transparent; border-bottom-color: rgba(255, 255, 255, 0.16); }
.site-header--overlay .brand-name { color: #fff; }
.site-header--overlay .brand-sub { color: rgba(255, 255, 255, 0.62); }
.site-header--overlay .nav__link { color: #fff; }
.site-header--overlay .nav__link:hover,
.site-header--overlay .nav__item.is-active > .nav__link { color: var(--accent); border-color: var(--accent); }
.site-header--overlay .nav__toggle { border-color: rgba(255, 255, 255, 0.5); background: transparent; }
.site-header--overlay .nav__toggle span,
.site-header--overlay .nav__toggle span::before,
.site-header--overlay .nav__toggle span::after { background: #fff; }
.site-header--overlay + main .hero__inner { padding-top: 150px; }
@media (max-width: 860px) {
  .site-header--overlay .nav.is-open .nav__link { color: #333; }
  .site-header--overlay .nav.is-open .nav__item.is-active > .nav__link { color: var(--primary); }
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 9px 24px; font-size: 13px; letter-spacing: 0.06em;
  border: 1px solid var(--primary); background: var(--primary); color: #fff;
  transition: 0.22s var(--ease); cursor: pointer;
}
.btn:hover { background: #fff; color: var(--primary); }
.btn--ghost { background: transparent; color: var(--primary); }
.btn--ghost:hover { background: var(--primary); color: #fff; }
.btn--light { background: transparent; border-color: #fff; color: #fff; }
.btn--light:hover { background: #fff; color: #333; }
.btn--sm { padding: 5px 14px; font-size: 12px; }
.arrow { width: 18px; height: 1px; background: currentColor; position: relative; }
.arrow::after { content: ""; position: absolute; right: 0; top: -3px; width: 6px; height: 6px; border-right: 1px solid currentColor; border-top: 1px solid currentColor; transform: rotate(45deg); }

/* ---------- 首屏 ---------- */
.hero { position: relative; min-height: 620px; display: flex; align-items: center; overflow: hidden; background: #2a2522; }
.hero__media { position: absolute; inset: 0; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; }
.hero::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.72) 0%, rgba(0, 0, 0, 0.45) 42%, rgba(0, 0, 0, 0.05) 75%);
}
.hero__inner { position: relative; z-index: 2; color: #fff; padding: 60px 0 110px; }
.hero__eyebrow { font-size: 11px; letter-spacing: 0.32em; color: rgba(255, 255, 255, 0.72); margin-bottom: 16px; text-transform: uppercase; }
.hero h1 {
  font-family: var(--kai); color: #fff; font-size: clamp(38px, 4.6vw, 62px); font-weight: 400;
  letter-spacing: 0.06em; line-height: 1.22; margin-bottom: 14px; text-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
}
.hero__lead { max-width: 33em; font-size: 14px; line-height: 1.9; color: rgba(255, 255, 255, 0.82); }
.hero__bullets { display: flex; flex-wrap: wrap; gap: 0; margin: 22px 0 26px; padding: 0; list-style: none; }
.hero__bullets li { position: relative; padding: 0 22px 0 20px; font-size: 13px; color: rgba(255, 255, 255, 0.85); }
.hero__bullets li + li { border-left: 1px solid rgba(255, 255, 255, 0.28); }
.hero__bullets li::before { content: ""; position: absolute; left: 0; top: 0.62em; width: 6px; height: 6px; border: 1px solid rgba(255, 255, 255, 0.6); transform: rotate(45deg); }
.hero__bullets li:first-child { padding-left: 0; }
.hero__bullets li:first-child::before { display: none; }
.hero__actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero__strip {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 3;
  background: rgba(0, 0, 0, 0.42);
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}
.hero__strip .container { display: flex; align-items: center; gap: 4px; height: 50px; }
.hero__strip a { color: rgba(255, 255, 255, 0.8); font-size: 13px; padding: 0 18px; height: 50px; display: inline-flex; align-items: center; border-right: 1px solid rgba(255, 255, 255, 0.12); }
.hero__strip a:first-child { padding-left: 0; }
.hero__strip a:hover { color: #fff; }

/* ---------- 区块 ---------- */
.section { padding: 64px 0; }
.section--tight { padding: 40px 0; }
.section--soft { background: var(--soft-2); }
.section--white { background: #fff; }
.section--deep { background: var(--soft); }

.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 32px; }
.section-head__left { max-width: 760px; }
.eyebrow { font-size: 11px; letter-spacing: 0.24em; color: #999; text-transform: uppercase; margin-bottom: 8px; }
.section-title { font-size: 26px; font-weight: 600; margin: 0 0 10px; letter-spacing: 0.04em; }
.section-desc { color: var(--muted); font-size: 14px; margin: 0; }
.link-more { flex: none; font-size: 13px; color: var(--primary); display: inline-flex; align-items: center; gap: 8px; }
.link-more:hover .arrow { width: 24px; }
.link-more .arrow { transition: width 0.2s; }

/* 居中标题 + 两侧细线（参考站“推荐产品/资质与荣誉/新闻资讯”） */
.section-head--center { display: flex; align-items: center; justify-content: center; gap: 22px; margin-bottom: 34px; text-align: center; }
.section-head--center .section-title { margin: 0; font-size: 28px; }
.section-head--center::before, .section-head--center::after { content: ""; width: 90px; height: 1px; background: #ddd; }
.section-head--center .eyebrow { display: none; }

/* ---------- 品牌介绍 ---------- */
.split { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items: center; }
.split__media img { width: 100%; aspect-ratio: 1.05 / 1; object-fit: cover; }
.split__body h2 { font-size: 26px; margin-bottom: 16px; }
.split__body .lead { color: #444; font-size: 14.5px; line-height: 1.95; }
.split__body p { color: var(--muted); font-size: 14px; line-height: 1.95; }
.split__list { margin: 16px 0 24px; padding: 0; list-style: none; display: grid; gap: 8px; }
.split__list li { position: relative; padding-left: 16px; color: #444; font-size: 13.5px; }
.split__list li::before { content: ""; position: absolute; left: 0; top: 0.66em; width: 6px; height: 6px; border: 1px solid var(--primary); transform: rotate(45deg); }

/* ---------- 统计（首页可不用） ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); }
.stats__item { padding: 22px 20px; border-right: 1px solid var(--line); text-align: center; }
.stats__item:last-child { border-right: 0; }
.stats__value { font-size: 32px; color: var(--primary); line-height: 1; font-weight: 600; }
.stats__value small { font-size: 13px; margin-left: 2px; color: var(--muted); font-weight: 400; }
.stats__label { margin-top: 8px; font-size: 13px; color: var(--muted); }

/* ---------- 商品卡（白底、无边框、标题在下方） ---------- */
.grid { display: grid; gap: 26px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.card { background: #fff; display: flex; flex-direction: column; }
.card__media { background: var(--soft); overflow: hidden; }
.card__media img { width: 100%; aspect-ratio: 800 / 688; object-fit: contain; background: var(--soft); transition: transform 0.6s var(--ease); }
.card:hover .card__media img { transform: scale(1.035); }
.card__body { padding: 12px 2px 0; }
.card__kicker { display: none; }
.card__title { font-size: 14px; font-weight: 400; line-height: 1.6; margin: 0 0 4px; }
.card__title a { color: #333; }
.card__title a:hover { color: var(--primary); }
.card__desc { display: none; }
.card__foot { margin-top: 2px; font-size: 12px; color: #999; display: flex; align-items: center; justify-content: space-between; }
.card__foot .arrow { display: none; }

/* 徽标（热卖/精选） */
.badge { display: inline-block; background: var(--primary); color: #fff; font-size: 11px; padding: 1px 7px; line-height: 1.7; }

/* ---------- 资质 ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.cert { margin: 0; background: #fff; }
.cert img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: var(--soft); }
.cert figcaption { padding: 12px 0 0; }
.cert figcaption strong { display: block; font-size: 15px; font-weight: 600; color: #333; margin-bottom: 3px; }
.cert figcaption p { font-size: 12.5px; color: #999; margin: 0 0 8px; }

/* ---------- 新闻卡 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-card { display: block; background: #fff; }
.news-card__media { overflow: hidden; background: var(--soft); }
.news-card__media img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; transition: transform 0.6s var(--ease); }
.news-card:hover .news-card__media img { transform: scale(1.035); }
.news-card__body { padding: 12px 2px 0; }
.news-card__title { font-size: 15px; font-weight: 500; line-height: 1.6; margin: 0 0 6px; }
.news-card__title a { color: #333; }
.news-card__title a:hover { color: var(--primary); }
.news-card__desc { display: none; }
.news-card__meta { display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: 12.5px; color: #999; }
.news-card__meta .link-more { font-size: 12px; }

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--line); max-width: 900px; margin: 0 auto; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; padding: 18px 40px 18px 0; position: relative; font-size: 15px; color: #333; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 18px; color: var(--primary); }
.faq details[open] summary::after { content: "−"; }
.faq .faq__answer { padding: 0 40px 18px 0; color: var(--muted); font-size: 13.5px; line-height: 1.9; }
.faq .faq__answer p:last-child { margin-bottom: 0; }

/* ---------- 页脚 ---------- */
.site-footer { background: #333; color: #bbb; font-size: 13px; padding: 48px 0 0; }
.site-footer a { color: #bbb; }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 0.9fr 0.9fr 1.1fr; gap: 40px; padding-bottom: 34px; }
.footer-brand .brand-name { color: #fff; font-size: 24px; }
.footer-brand .brand-sub { color: #888; }
.footer-brand .brand-mark { width: 44px; height: 44px; font-size: 24px; }
.footer-brand p { margin: 14px 0 18px; color: #999; font-size: 12.5px; line-height: 1.8; max-width: 28em; }
.footer-title { font-size: 16px; color: #fff; margin-bottom: 16px; font-weight: 600; }
.footer-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 9px; font-size: 13px; }
.footer-contact { display: grid; gap: 12px; font-size: 13px; }
.footer-contact span { display: inline-block; font-size: 11px; color: #888; letter-spacing: 0.14em; margin-bottom: 2px; text-transform: uppercase; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1); padding: 16px 0 20px;
  display: flex; justify-content: center; gap: 8px 26px; flex-wrap: wrap;
  font-size: 12px; color: #888; text-align: center;
}
.footer-bottom a { color: #999; }

/* ---------- 内页 ---------- */
.page-hero { background: #fff; padding: 26px 0 10px; }
.page-hero .crumbs { margin-bottom: 14px; }
.page-hero h1 { font-size: 24px; margin-bottom: 8px; }
.page-hero p { color: var(--muted); font-size: 13.5px; max-width: 56em; margin: 0; }
.page-hero--slim { padding: 18px 0 6px; }
.page-hero--slim .crumbs { margin-bottom: 0; }

.crumbs { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; font-size: 12px; color: #999; }
.crumbs a:hover { color: var(--primary); }
.crumbs span { opacity: 0.6; }

.layout { display: grid; grid-template-columns: 264px minmax(0, 1fr); gap: 40px; align-items: start; }
.sidebar { position: sticky; top: 116px; }
.sidebar__title { font-size: 19px; font-weight: 600; margin: 0 0 14px; padding-bottom: 10px; border-bottom: 2px solid #333; }
.sidebar__nav { list-style: none; padding: 0; margin: 0 0 34px; }
.sidebar__nav li { margin-bottom: 6px; }
.sidebar__nav a {
  display: flex; align-items: center; gap: 8px; height: 44px; padding: 0 14px;
  background: var(--soft); font-size: 14.5px; color: #444; transition: 0.2s;
}
.sidebar__nav a::before { content: "›"; color: #aaa; font-size: 17px; line-height: 1; }
.sidebar__nav a:hover { background: #efefef; color: var(--primary); }
.sidebar__nav .is-active { background: #fbeff0; color: var(--primary); }
.sidebar__nav .is-active::after { display: none; }
.sidebar__cta { background: var(--soft); padding: 20px; }
.sidebar__cta h3 { font-size: 15px; margin-bottom: 6px; }
.sidebar__cta p { font-size: 12.5px; color: var(--muted); margin-bottom: 12px; }

/* 侧栏“最新资讯” */
.sidebar-news { margin-top: 8px; }
.sidebar-news h3 { font-size: 16px; border-bottom: 2px solid #333; padding-bottom: 10px; margin-bottom: 12px; }
.sidebar-news ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.sidebar-news li { position: relative; padding-left: 12px; font-size: 12.5px; color: #777; line-height: 1.6; }
.sidebar-news li::before { content: ""; position: absolute; left: 0; top: 0.66em; width: 3px; height: 3px; background: #bbb; }

.prose { font-size: 14px; line-height: 1.95; color: #444; }
.prose h2 { font-size: 18px; margin: 2em 0 0.7em; padding-bottom: 8px; border-bottom: 1px solid var(--line); }
.prose h3 { font-size: 15.5px; margin: 1.6em 0 0.6em; }
.prose p { color: #444; }
.prose a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.prose ul, .prose ol { color: #444; }
.prose img { margin: 1.6em 0; }
.prose blockquote { margin: 1.6em 0; padding: 14px 18px; background: var(--soft); border-left: 3px solid var(--primary); color: var(--muted); }
.prose table { width: 100%; border-collapse: collapse; margin: 1.4em 0; font-size: 13.5px; }
.prose th, .prose td { border: 1px solid #ddd; padding: 10px 12px; text-align: left; vertical-align: top; }
.prose th { background: var(--soft); font-weight: 600; white-space: nowrap; }

.spec { display: grid; grid-template-columns: 1fr; border-top: 1px solid #ddd; border-left: 1px solid #ddd; margin: 16px 0 26px; }
.spec div { display: grid; grid-template-columns: 110px 1fr; border-right: 1px solid #ddd; border-bottom: 1px solid #ddd; }
.spec dt { padding: 9px 12px; background: var(--soft); font-size: 13px; color: #666; }
.spec dd { margin: 0; padding: 9px 12px; font-size: 13px; }

.article-head { margin-bottom: 16px; }
.article-head .kicker { font-size: 11px; letter-spacing: 0.18em; color: #999; text-transform: uppercase; margin-bottom: 8px; }
.article-head h1 { font-size: 24px; margin-bottom: 10px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 6px 18px; color: #999; font-size: 12px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.article-cover { margin: 18px 0 24px; }
.article-cover img { width: 100%; height: 460px; object-fit: cover; background: var(--soft); }

.product-hero { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.product-hero__media { background: var(--soft); }
.product-hero__media img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
.product-hero h1 { font-size: 22px; margin-bottom: 10px; }
.product-hero .kicker { font-size: 11px; letter-spacing: 0.18em; color: #999; text-transform: uppercase; margin-bottom: 8px; }
.product-hero .summary { color: var(--muted); font-size: 13.5px; }
.product-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }

.tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 0; padding: 0; list-style: none; }
.tags li { font-size: 12px; border: 1px solid var(--line); padding: 3px 9px; color: #888; }

.list-head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--line); margin-bottom: 24px; }
.list-head h2 { font-size: 20px; margin: 0; }
.list-head span { font-size: 12.5px; color: #999; }

.article-list { list-style: none; margin: 0; padding: 0; }
.article-list li { border-bottom: 1px solid var(--line); }
.article-list a { display: grid; grid-template-columns: 1fr auto; gap: 16px; align-items: baseline; padding: 16px 0; }
.article-list__title { font-size: 15px; color: #333; }
.article-list a:hover .article-list__title { color: var(--primary); }
.article-list__date { font-size: 12.5px; color: #999; white-space: nowrap; }
.article-list__desc { grid-column: 1 / -1; font-size: 12.5px; color: #999; margin-top: -8px; }

.pager { display: flex; gap: 6px; justify-content: center; margin-top: 36px; }
.pager a, .pager span { min-width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid #ddd; font-size: 13px; color: #666; }
.pager .is-current, .pager .page-num-current { background: var(--primary); color: #fff; border-color: var(--primary); }
.pager a:hover { border-color: var(--primary); color: var(--primary); }

.related { margin-top: 44px; }
.related h2 { font-size: 18px; margin-bottom: 16px; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.contact-card { background: var(--soft-2); border: 1px solid var(--line); padding: 30px; }
.contact-card dl { display: grid; gap: 14px; margin: 0; }
.contact-card dt { font-size: 11px; letter-spacing: 0.16em; color: #999; text-transform: uppercase; margin-bottom: 2px; }
.contact-card dd { margin: 0; font-size: 15px; }
.map-frame { background: var(--soft); border: 1px solid var(--line); aspect-ratio: 4 / 3; display: grid; place-items: center; color: var(--muted); font-size: 13px; text-align: center; padding: 30px; }
.map-frame strong { display: block; font-size: 18px; color: #333; margin-bottom: 8px; }

.timeline { list-style: none; padding: 0; margin: 8px 0 0; border-left: 1px solid #ddd; }
.timeline li { position: relative; padding: 0 0 26px 26px; }
.timeline li::before { content: ""; position: absolute; left: -4px; top: 7px; width: 7px; height: 7px; background: var(--primary); }
.timeline time { font-size: 18px; color: var(--primary); display: block; margin-bottom: 3px; font-weight: 600; }
.timeline p { margin: 0; color: var(--muted); font-size: 13.5px; }

.notfound { text-align: center; padding: 110px 0 130px; }
.notfound h1 { font-size: 90px; color: var(--primary); margin: 0; }
.notfound p { color: var(--muted); }

/* 关于页横向标签（参考站品牌页） */
.about-tabs { display: flex; justify-content: center; flex-wrap: wrap; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 40px; }
.about-tabs a { padding: 10px 26px; font-size: 14px; color: #555; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.about-tabs a:hover { color: var(--primary); }
.about-tabs .is-active { color: var(--primary); border-color: var(--primary); }

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .grid--4 { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .band__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .container { width: calc(100% - 32px); }
  .section { padding: 44px 0; }
  .site-header__inner { min-height: 76px; }
  .brand-mark { width: 42px; height: 42px; font-size: 24px; }
  .brand-name { font-size: 22px; }
  .nav {
    position: absolute; top: 100%; left: 0; right: 0; display: none;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 8px 16px 16px;
    box-shadow: 0 14px 24px -16px rgba(0, 0, 0, 0.2);
  }
  .nav.is-open { display: flex; }
  .nav__link { padding: 12px 2px; border-bottom: 1px solid var(--line); }
  .nav__menu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; padding: 0 0 8px 14px; display: none; }
  .nav__item.is-open .nav__menu { display: block; }
  .nav__toggle { display: inline-flex; }
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 28px; }
  .layout { grid-template-columns: 1fr; gap: 28px; }
  .sidebar { position: static; }
  .sidebar__nav { display: flex; flex-wrap: wrap; gap: 6px; }
  .sidebar__nav li { margin: 0; }
  .sidebar__nav a { height: 36px; padding: 0 12px; font-size: 13px; }
  .product-hero { grid-template-columns: 1fr; gap: 24px; }
  .contact-grid { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: 1fr; }
  .hero { min-height: 560px; }
}

@media (max-width: 620px) {
  .topbar { display: none; }
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .hero { min-height: 540px; }
  .hero__inner { padding: 40px 0 96px; }
  .hero h1 { font-size: 34px; }
  .hero__bullets { display: none; }
  .hero__strip .container { height: auto; flex-wrap: wrap; padding: 6px 0; }
  .hero__strip a { height: 32px; padding: 0 10px; font-size: 12px; border-right: 0; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 10px; }
  .section-head--center::before, .section-head--center::after { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .cert-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .article-cover img { height: 220px; }
  .article-list a { grid-template-columns: 1fr; gap: 4px; }
  .article-list__date { order: -1; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}