:root { --ink:#1f3042; --text:#4d6275; --muted:#8193a2; --line:#dfe7ee; --page:#f5f8fa; --cyan:#00a7c4; --blue:#14698c; --orange:#ff9d00; --footer:#142238; --shadow:0 8px 24px rgba(35,62,82,.06); }
* { box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { margin:0; color:var(--text); background:var(--page); font:14px/1.7 "Noto Sans SC","Microsoft YaHei",sans-serif; }
a { color:inherit; text-decoration:none; }
button,input { font:inherit; }
img { display:block; max-width:100%; }
.shell { width:min(1180px,calc(100% - 40px)); margin:0 auto; }
.utility-bar { height:31px; color:#718395; border-bottom:1px solid #e6edf2; background:#fbfcfd; font-size:11px; }
.utility-inner { height:100%; display:flex; align-items:center; justify-content:space-between; }
.utility-inner div { display:flex; gap:24px; }
.utility-inner a:hover { color:var(--cyan); }
.site-header { background:white; }
.brand-row { height:78px; display:flex; align-items:center; gap:30px; }
.brand { display:flex; align-items:center; }
.brand-mark { width:40px; height:40px; display:grid; place-items:center; color:white; background:var(--blue); border-radius:5px; }
.brand-mark svg { width:22px; }
.brand strong { margin-left:10px; color:var(--ink); font-size:24px; }
.brand small { margin-left:14px; padding-left:14px; color:#8493a0; border-left:1px solid var(--line); }
.search { width:410px; height:42px; margin-left:auto; display:flex; align-items:center; border:1px solid #dce6ee; border-radius:22px; overflow:hidden; background:#f8fafc; }
.search svg { width:17px; margin-left:16px; color:#9aabba; }
.search input { min-width:0; flex:1; padding:0 11px; border:0; outline:0; background:transparent; }
.search button { align-self:stretch; width:78px; border:0; color:#17283a; background:var(--orange); font-weight:700; }
.menu-button { display:none; }
.main-nav { border-block:1px solid #e6edf2; background:white; }
.nav-inner { height:50px; display:flex; gap:39px; }
.nav-inner a { position:relative; display:grid; place-items:center; color:#33485b; font-weight:700; }
.nav-inner a:hover,.nav-inner a.active { color:var(--blue); }
.nav-inner a.active::after { content:""; position:absolute; right:0; bottom:-1px; left:0; height:3px; background:var(--orange); }
.breadcrumb { height:56px; display:flex; align-items:center; gap:7px; color:#72869a; font-size:12px; }
.breadcrumb svg { width:13px; }
.catalog-head { position:relative; overflow:hidden; color:white; background:var(--footer); }
.catalog-head::before { content:""; position:absolute; top:0; bottom:0; left:calc(50% - 590px); width:6px; background:var(--cyan); }
.catalog-head::after { content:""; position:absolute; top:0; left:calc(50% - 584px); width:120px; height:5px; background:var(--orange); }
.catalog-head-inner { min-height:210px; display:flex; align-items:center; justify-content:space-between; padding-left:38px; }
.catalog-head span { color:#6ad1e3; font-size:10px; font-weight:800; }
.catalog-head h1 { margin:4px 0 5px; font-size:38px; }
.catalog-head p { margin:0; color:#a9bac7; }
.catalog-head nav { display:flex; border:1px solid rgba(255,255,255,.2); }
.catalog-head nav a { min-width:118px; padding:15px 18px; border-right:1px solid rgba(255,255,255,.2); text-align:center; }
.catalog-head nav a:last-child { border:0; }
.catalog-head nav a:hover { color:#17283a; background:var(--orange); }
.page-sections { padding-block:20px 44px; }
.catalog-section { position:relative; margin-bottom:24px; padding:30px; border:1px solid var(--line); background:white; box-shadow:var(--shadow); }
.catalog-section::before { content:""; position:absolute; top:0; left:0; width:88px; height:4px; background:var(--cyan); }
.catalog-section::after { content:""; position:absolute; top:0; left:88px; width:28px; height:4px; background:var(--orange); }
.section-head { min-height:66px; display:flex; align-items:center; gap:15px; padding-bottom:20px; border-bottom:1px solid #e8eef2; }
.section-index { width:46px; height:46px; display:grid; place-items:center; color:white; background:var(--blue); font-size:22px; font-weight:800; }
.section-head div { min-width:0; }
.section-head small { color:var(--cyan); font-size:9px; font-weight:800; }
.section-head h2 { margin:0; color:var(--ink); font-size:22px; }
.section-head > a { margin-left:auto; display:flex; align-items:center; gap:4px; color:#7d8f9e; font-size:11px; }
.section-head > a svg { width:14px; }
.company-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:1px; margin-top:20px; background:var(--line); }
.company-item { min-width:0; min-height:82px; display:grid; grid-template-columns:minmax(0,1fr) 18px; align-items:center; gap:13px; padding:16px 18px; background:white; }
.company-item h3 { margin:0; overflow:hidden; color:var(--ink); text-overflow:ellipsis; white-space:nowrap; font-size:15px; }
.company-item p { margin:3px 0 0; overflow:hidden; color:#8394a2; text-overflow:ellipsis; white-space:nowrap; font-size:11px; }
.company-item > svg { width:16px; color:#bec9d0; }
.company-item:hover { position:relative; z-index:1; box-shadow:inset 0 -3px var(--orange); }
.company-item:hover > svg { color:var(--orange); }
.product-grid { display:grid; grid-template-columns:1fr 1fr; gap:1px; margin-top:20px; background:var(--line); }
.product-card { min-width:0; min-height:82px; display:grid; grid-template-columns:34px minmax(0,1fr) auto 16px; align-items:center; gap:13px; padding:14px 18px; background:white; transition:.2s ease; }
.product-card:hover { position:relative; z-index:1; box-shadow:inset 4px 0 var(--cyan); }
.product-index { width:30px; height:30px; display:grid; place-items:center; color:var(--blue); background:#edf5f7; font-size:10px; font-weight:800; }
.product-info { min-width:0; }
.product-info > span { color:var(--cyan); font-size:9px; font-weight:700; }
.product-info h3 { margin:3px 0; overflow:hidden; color:var(--ink); text-overflow:ellipsis; white-space:nowrap; font-size:16px; }
.product-card > strong { color:#f17d00; font-size:14px; }
.product-card > svg { width:15px; color:#b9c6ce; }
.product-card:hover .product-index { color:white; background:var(--orange); }
.product-card:hover > svg { color:var(--cyan); }
.article-list { display:grid; grid-template-columns:1fr 1fr; gap:0 26px; margin-top:8px; }
.article-list a { min-width:0; min-height:64px; display:grid; grid-template-columns:32px minmax(0,1fr) 38px; align-items:center; gap:12px; border-bottom:1px dashed #dce5eb; }
.article-list > a > span { width:27px; height:27px; display:grid; place-items:center; color:var(--blue); background:#edf5f7; font-size:9px; font-weight:800; }
.article-list h3 { margin:0; overflow:hidden; color:#354b5e; text-overflow:ellipsis; white-space:nowrap; font-size:13px; }
.article-list time { color:#9dabB5; font-size:9px; }
.article-list a:hover h3 { color:var(--cyan); }
.article-list a:hover > span { color:white; background:var(--orange); }
.site-footer { padding:34px 0; color:#b9c6d0; background:var(--footer); }
.footer-inner { display:flex; align-items:center; justify-content:space-between; gap:24px; }
.footer-inner nav { display:flex; gap:24px; }
.footer-inner a:hover { color:white; }
.footer-inner small { color:#718696; }

@media (max-width:980px) {
  .brand small { display:none; }
  .product-grid { grid-template-columns:1fr 1fr; }
  .catalog-head::before,.catalog-head::after { display:none; }
}

@media (max-width:760px) {
  .shell { width:min(100% - 26px,1180px); }
  .utility-bar,.search { display:none; }
  .brand-row { height:66px; }
  .brand-mark { width:35px; height:35px; }
  .brand strong { font-size:20px; }
  .menu-button { margin-left:auto; width:40px; height:40px; display:grid; place-items:center; color:var(--ink); border:1px solid var(--line); background:white; }
  .main-nav { position:absolute; z-index:20; top:66px; right:0; left:0; display:none; box-shadow:var(--shadow); }
  .main-nav.open { display:block; }
  .nav-inner { width:100%; height:auto; display:grid; gap:0; }
  .nav-inner a { min-height:47px; border-top:1px solid #edf2f5; }
  .nav-inner a.active::after { top:10px; right:auto; bottom:10px; left:0; width:3px; height:auto; }
  .breadcrumb { height:50px; }
  .catalog-head-inner { min-height:180px; align-items:flex-start; flex-direction:column; justify-content:center; gap:20px; padding-left:0; }
  .catalog-head h1 { font-size:30px; }
  .catalog-head nav { width:100%; }
  .catalog-head nav a { min-width:0; flex:1; padding:12px 8px; font-size:12px; }
  .catalog-section { padding:22px 17px; }
  .section-head { align-items:flex-start; }
  .section-index { width:38px; height:38px; font-size:18px; }
  .section-head h2 { font-size:19px; }
  .company-grid,.product-grid,.article-list { grid-template-columns:1fr; }
  .article-list a { min-height:76px; }
  .footer-inner { align-items:center; flex-direction:column; text-align:center; }
  .footer-inner nav { flex-wrap:wrap; justify-content:center; }
}