/* ============================================================
   鼎智PC - 加固计算机企业站模板
   Flat / Tech-Blue / Responsive (PC > 1024 > 768 > 560)
   ============================================================ */

/* ---------- Tokens & Reset ---------- */
:root {
  --primary: #0a5fa8;
  --primary-d: #084a86;
  --deep: #0b2e5b;
  --deep-d: #082544;
  --accent: #f39c12;
  --text: #333;
  --muted: #767e88;
  --bg: #f4f6fa;
  --line: #e4e9f1;
  --tint: #eef4fb;
  --pri-a: #9db1cc;
  --pri-b: #aebcd2;
  --pri-c: #cfdcec;
  --acc-d: #d7890c;
  --acc-l: #ffd28a;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  font: 14px/1.7 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--text);
  background: #fff;
  overflow-x: hidden;
}
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; transition: color .2s, background .2s, border-color .2s; }
a:hover { color: var(--primary); }
img { max-width: 100%; border: 0; display: block; }
h1, h2, h3, h4, h5, h6 { font-weight: 600; line-height: 1.4; }
table { border-collapse: collapse; }
input, button, textarea, select { font: inherit; color: inherit; outline: none; }
em, i { font-style: normal; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 15px; }
.sec { padding: 50px 0; }
.sec.alt { background: var(--bg); }
.sec-head { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 26px; }
.sec-title { font-size: 26px; color: var(--deep); position: relative; padding-left: 14px; }
.sec-title::before { content: ""; position: absolute; left: 0; top: 8px; bottom: 8px; width: 5px; background: var(--primary); }
.sec-title small { display: block; font-size: 12px; color: var(--muted); font-weight: 400; letter-spacing: 1px; text-transform: uppercase; margin-top: 2px; }
.sec-more { color: var(--muted); font-size: 13px; }
.sec-more:hover { color: var(--primary); }

.grid { display: grid; gap: 24px; }
.grid > *, .g-side > *, .foot-grid > *, .about-in > *, .cta-band .wrap > * { min-width: 0; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }
.cat-chips { display: none; }
.cat-chips:empty { display: none; }
.g5 { grid-template-columns: repeat(5, 1fr); }
.g-side { display: grid; grid-template-columns: 260px 1fr; gap: 24px; align-items: start; }

.btn { display: inline-block; padding: 10px 28px; background: var(--primary); color: #fff; font-size: 14px; border: 1px solid var(--primary); cursor: pointer; }
.btn:hover { background: var(--primary-d); border-color: var(--primary-d); color: #fff; }
.btn.line { background: none; color: var(--primary); }
.btn.line:hover { background: var(--primary); color: #fff; }
.btn.wide { display: block; text-align: center; }

/* ---------- 面包屑 ---------- */
.crumb-bar { background: var(--bg); border-bottom: 1px solid var(--line); padding: 12px 0; font-size: 13px; color: var(--muted); }
.crumb-bar a { color: var(--muted); }
.crumb-bar a:hover { color: var(--primary); }
.crumb-bar strong { color: var(--primary); font-weight: 600; }
.crumb-bar li { display: inline-block; }
.crumb-bar li + li::before { content: "/"; margin: 0 6px; color: var(--muted); }

/* ---------- 顶部条 ---------- */
.topbar { background: var(--deep-d); color: var(--pri-b); font-size: 12px; line-height: 34px; }
.topbar .wrap { display: flex; justify-content: space-between; }
.topbar a { color: var(--pri-b); }
.topbar a:hover { color: #fff; }
.topbar-r { display: flex; }
.topbar-r span { margin-left: 18px; }

/* ---------- 头部 ---------- */
.header { background: #fff; }
.header .wrap { display: flex; align-items: center; justify-content: space-between; height: 92px; }
.logo { display: flex; align-items: center; }
.logo-ico { width: 46px; height: 46px; background: var(--primary); color: #fff; font-size: 26px; font-weight: 700; display: flex; align-items: center; justify-content: center; margin-right: 12px; font-family: "Microsoft YaHei"; }
.logo-txt .cn { display: block; font-size: 24px; color: var(--deep); font-weight: 700; letter-spacing: 2px; line-height: 1.2; }
.logo-txt .en { display: block; font-size: 11px; color: var(--muted); letter-spacing: 2.5px; text-transform: uppercase; }
.header-r { display: flex; align-items: center; gap: 30px; }
.h-phone { text-align: right; }
.h-phone .t { display: block; font-size: 12px; color: var(--muted); }
.h-phone .n { display: block; font-size: 22px; color: var(--primary); font-weight: 700; font-family: Arial; }
.h-search { display: flex; border: 2px solid var(--primary); }
.h-search input { width: 190px; height: 36px; border: 0; padding: 0 10px; font-size: 13px; }
.h-search button { width: 62px; border: 0; background: var(--primary); color: #fff; cursor: pointer; font-size: 13px; }
.h-search button:hover { background: var(--primary-d); }

/* ---------- 导航 ---------- */
.nav { background: var(--deep); position: sticky; top: 0; z-index: 900; }
.nav .wrap { display: flex; }
.nav-ul { display: flex; flex: 1; }
.nav-item { position: relative; flex: 1; text-align: center; }
.nav-item > a { display: block; color: #fff; font-size: 16px; padding: 14px 6px; }
.nav-item > a:hover, .nav-item.on > a { background: var(--primary); color: #fff; }
.sub { display: none; position: absolute; left: 50%; transform: translateX(-50%); top: 100%; min-width: 168px; background: #fff; border: 1px solid var(--line); border-top: 2px solid var(--primary); z-index: 910; box-shadow: 0 6px 16px rgba(0, 0, 0, .12); }
.sub a { display: block; padding: 9px 16px; font-size: 14px; color: var(--text); border-bottom: 1px solid var(--line); white-space: nowrap; }
.sub a:last-child { border-bottom: 0; }
.sub a:hover { background: var(--tint); color: var(--primary); }
.sub:not(:has(a)) { display: none; }
@media (hover: hover) { .nav-item:hover .sub { display: block; } }
.nav-btn { display: none; width: 44px; height: 44px; cursor: pointer; margin-left: auto; padding: 12px 10px; }
.nav-btn i { display: block; height: 2px; background: #fff; margin: 5px 0; transition: .3s; }
.nav-btn.on i:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-btn.on i:nth-child(2) { opacity: 0; }
.nav-btn.on i:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.m-nav { display: none; }

/* ---------- 轮播 ---------- */
.banner { position: relative; height: 440px; overflow: hidden; background: var(--deep); }
.banner-track { display: flex; height: 100%; transition: transform .5s ease; }
.banner-track li { min-width: 100%; height: 100%; position: relative; }
.banner-track img { width: 100%; height: 100%; object-fit: cover; }
.banner-cap { position: absolute; left: 0; top: 50%; transform: translateY(-50%); background: rgba(0, 0, 0, .55); color: #fff; padding: 26px 34px; max-width: 520px; }
.banner-cap h2 { font-size: 26px; letter-spacing: 1px; }
.banner-cap p { font-size: 14px; margin-top: 8px; color: var(--pri-c); }
.banner-cap .btn { margin-top: 16px; background: var(--accent); border-color: var(--accent); color: var(--deep); font-weight: 600; }
.banner-cap .btn:hover { background: var(--acc-d); border-color: var(--acc-d); }
.banner-dots { position: absolute; left: 0; right: 0; bottom: 16px; display: flex; justify-content: center; gap: 10px; }
.banner-dots span { width: 26px; height: 4px; background: rgba(255, 255, 255, .45); cursor: pointer; }
.banner-dots span.on { background: var(--accent); }
.banner-nav { position: absolute; top: 50%; transform: translateY(-50%); width: 44px; height: 64px; line-height: 62px; text-align: center; color: #fff; font-size: 30px; font-family: Simsun; background: rgba(8, 37, 68, .4); cursor: pointer; user-select: none; }
.banner-nav:hover { background: var(--primary); }
.banner-prev { left: 0; }
.banner-next { right: 0; }

/* ---------- 分类磁贴 ---------- */
.cat-tile { display: block; background: var(--tint); border: 1px solid var(--line); padding: 24px 20px; text-align: center; }
.cat-tile:hover { background: var(--primary); border-color: var(--primary); }
.cat-tile:hover * { color: #fff; }
.cat-tile .t { display: block; font-size: 17px; color: var(--deep); font-weight: 600; }
.cat-tile .e { display: block; font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; margin: 4px 0 8px; }
.cat-tile .d { display: block; font-size: 12px; color: var(--muted); line-height: 1.6; }
.cat-tile.more { background: var(--deep); border-color: var(--deep); }
.cat-tile.more * { color: #fff !important; }
.cat-tile.more:hover { background: var(--primary); border-color: var(--primary); }

/* ---------- 产品卡片 ---------- */
.pro-card { background: #fff; border: 1px solid var(--line); transition: border-color .2s, transform .2s; }
.pro-card:hover { border-color: var(--primary); transform: translateY(-4px); }
.pro-img { display: block; overflow: hidden; padding: 16px 16px 0; background: #fff; }
.pro-img img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.pro-info { padding: 14px 16px 18px; }
.pro-info h3 { font-size: 15px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pro-info h3 a:hover { color: var(--primary); }
.pro-info p { font-size: 12px; color: var(--muted); margin-top: 6px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- 解决方案卡片 ---------- */
.sol-card { background: #fff; border: 1px solid var(--line); }
.sol-card:hover { border-color: var(--primary); }
.sol-img { display: block; overflow: hidden; }
.sol-img img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; transition: transform .4s; }
.sol-card:hover .sol-img img { transform: scale(1.05); }
.sol-txt { padding: 16px 18px 20px; }
.sol-txt h3 { font-size: 16px; color: var(--deep); }
.sol-txt p { font-size: 13px; color: var(--muted); margin-top: 6px; line-height: 1.7; height: 44px; overflow: hidden; }

/* ---------- 新闻块 ---------- */
.news-col { background: #fff; border: 1px solid var(--line); }
.news-col-hd { display: flex; justify-content: space-between; align-items: center; padding: 14px 18px; border-bottom: 2px solid var(--primary); }
.news-col-hd h3 { font-size: 17px; color: var(--deep); }
.news-col-hd a { font-size: 12px; color: var(--muted); }
.news-li { padding: 0 18px; }
.news-li li { border-bottom: 1px dashed var(--line); }
.news-li li:last-child { border-bottom: 0; }
.news-li a { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding: 11px 0; }
.news-li .tt { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.news-li .tt::before { content: "▪"; color: var(--primary); margin-right: 8px; }
.news-li .dt { color: var(--muted); font-size: 12px; font-family: Arial; }
.news-li a:hover .tt { color: var(--primary); }

/* ---------- 关于我们 ---------- */
.about-in { display: grid; grid-template-columns: 5fr 6fr; gap: 40px; align-items: center; }
.about-img { position: relative; }
.about-img img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.about-img::after { content: ""; position: absolute; left: -14px; bottom: -14px; right: 14px; top: 14px; border: 2px solid var(--primary); z-index: -1; }
.about-txt h3 { font-size: 24px; color: var(--deep); }
.about-txt h3 small { display: block; font-size: 12px; color: var(--muted); font-weight: 400; letter-spacing: 2px; text-transform: uppercase; margin-top: 4px; }
.about-txt p { color: var(--muted); margin-top: 14px; text-align: justify; }
.about-stat { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 22px; padding-top: 22px; border-top: 1px solid var(--line); }
.about-stat li { text-align: center; }
.about-stat b { display: block; font-size: 28px; color: var(--primary); font-family: Arial; }
.about-stat span { font-size: 12px; color: var(--muted); }
.about-btns { margin-top: 22px; display: flex; gap: 14px; }

/* ---------- CTA 横幅 ---------- */
.cta-band { background: var(--primary); color: #fff; padding: 30px 0; }
.cta-band .wrap { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.cta-band h3 { font-size: 22px; }
.cta-band p { font-size: 13px; opacity: .85; margin-top: 4px; }
.cta-band .phone { font-size: 28px; font-weight: 700; font-family: Arial; color: #fff; }
.cta-band .btn { background: #fff; color: var(--primary); border-color: #fff; }
.cta-band .btn:hover { background: var(--deep); color: #fff; border-color: var(--deep); }

/* ---------- 侧栏 ---------- */
.side { display: grid; gap: 24px; }
.side-box { background: #fff; border: 1px solid var(--line); }
.side-box:has(.side-menu:empty) { display: none; }
.side-hd { background: var(--deep); color: #fff; padding: 12px 18px; font-size: 16px; }
.side-hd small { float: right; font-size: 11px; opacity: .6; text-transform: uppercase; letter-spacing: 1px; }
.side-menu li { border-bottom: 1px solid var(--line); }
.side-menu li:last-child { border-bottom: 0; }
.side-menu a { display: block; padding: 11px 18px; font-size: 14px; position: relative; }
.side-menu a::after { content: "›"; position: absolute; right: 18px; color: var(--muted); }
.side-menu li.on a, .side-menu a:hover { background: var(--tint); color: var(--primary); padding-left: 24px; }
.side-menu li.on a::after { color: var(--primary); }
.side-pro { padding: 16px 18px; display: grid; gap: 14px; }
.side-pro a { display: flex; gap: 12px; align-items: center; }
.side-pro img { width: 88px; height: 66px; object-fit: cover; flex-shrink: 0; }
.side-pro .t { font-size: 13px; line-height: 1.5; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }

/* ---------- 列表页正文 ---------- */
.main-list { padding: 34px 0 50px; }
.page-title { font-size: 24px; color: var(--deep); padding-bottom: 14px; border-bottom: 2px solid var(--primary); margin-bottom: 24px; }
.news-item { display: flex; gap: 20px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.news-thumb { flex-shrink: 0; width: 220px; }
.news-thumb img { width: 220px; height: 150px; object-fit: cover; }
.news-txt { flex: 1; min-width: 0; }
.news-txt h3 { font-size: 17px; margin-top: 2px; }
.news-txt h3 a { color: var(--deep); }
.news-txt h3 a:hover { color: var(--primary); }
.news-txt p { color: var(--muted); font-size: 13px; margin-top: 8px; line-height: 1.8; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-meta { display: block; margin-top: 10px; font-size: 12px; color: var(--muted); }
.news-meta i { margin-right: 16px; }

/* ---------- 分页 ---------- */
.pagination { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; margin-top: 30px; list-style: none; padding: 0; }
.pagination .page-link { display: inline-block; min-width: 38px; padding: 7px 12px; border: 1px solid var(--line); background: #fff; color: var(--text); font-size: 13px; font-weight: 400; text-align: center; }
.pagination a.page-link:hover { border-color: var(--primary); color: var(--primary); }
.pagination .active .page-link { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.pagination .disabled .page-link { color: var(--muted); background: #f5f7fa; }

/* ---------- 详情页 ---------- */
.article { padding: 34px 0 50px; }
.article-hd { text-align: center; padding-bottom: 22px; border-bottom: 1px solid var(--line); margin-bottom: 26px; }
.article-hd h1 { font-size: 26px; color: var(--deep); line-height: 1.5; }
.article-meta { margin-top: 14px; font-size: 13px; color: var(--muted); }
.article-meta span { margin: 0 12px; }
.article-tags { margin: 30px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.article-tags a { display: inline-block; padding: 4px 12px; border: 1px solid var(--line); border-radius: 999px; font-size: 13px; color: var(--muted); transition: all .2s; }
.article-tags a:hover { color: #fff; background: var(--pri-a); border-color: var(--pri-a); }
.article-body { font-size: 15px; line-height: 2; color: #444; overflow-wrap: break-word; }
.article-body p { margin-bottom: 14px; }
.article-body img { max-width: 100%; height: auto; margin: 10px auto; }
.article-body h2, .article-body h3 { color: var(--deep); margin: 24px 0 12px; font-size: 18px; }
.article-body ul, .article-body ol { padding-left: 24px; list-style: disc; margin-bottom: 14px; }
.article-body ol { list-style: decimal; }
.article-body table { width: 100%; border: 1px solid var(--line); margin: 14px 0; }
.article-body th, .article-body td { border: 1px solid var(--line); padding: 8px 12px; font-size: 14px; }
.article-body th { background: var(--tint); }
/* 产品图集与参数 */
.prod-sec { margin-bottom: 30px; }
.prod-sec:last-child { margin-bottom: 0; }
.prod-sec-t { font-size: 20px; color: var(--deep); position: relative; padding: 0 0 10px 14px; border-bottom: 1px solid var(--line); margin-bottom: 18px; }
.prod-sec-t::before { content: ""; position: absolute; left: 0; top: 5px; bottom: 15px; width: 5px; background: var(--primary); }
.prod-sec-t small { font-size: 11px; color: var(--muted); font-weight: 400; letter-spacing: 1px; text-transform: uppercase; margin-left: 10px; }
.gallery-main { border: 1px solid var(--line); padding: 10px; background: #fff; }
.gallery-main img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: opacity .2s; cursor: zoom-in; }
#imgMask { display: none; position: fixed; left: 0; top: 0; right: 0; bottom: 0; background: rgba(8, 37, 68, .92); z-index: 999; cursor: zoom-out; align-items: center; justify-content: center; }
#imgMask.show { display: flex; }
#imgMask img { max-width: 94vw; max-height: 90vh; width: auto; height: auto; object-fit: contain; box-shadow: 0 0 40px rgba(0, 0, 0, .5); }
#imgMask .close { position: absolute; top: 10px; right: 20px; color: #fff; font-size: 40px; line-height: 1; font-family: Arial; opacity: .8; cursor: pointer; }
.gallery-main img.zoom { opacity: .3; }
.gallery-thumbs { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-top: 10px; }
.gallery-thumbs li { border: 1px solid var(--line); padding: 4px; cursor: pointer; background: #fff; }
.gallery-thumbs li.on { border-color: var(--primary); }
.gallery-thumbs img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; opacity: .85; }
.gallery-thumbs li.on img { opacity: 1; }
table.spec { width: 100%; border: 1px solid var(--line); }
.spec th, .spec td { border: 1px solid var(--line); padding: 9px 14px; font-size: 14px; text-align: left; vertical-align: top; }
.spec th { width: 130px; background: var(--tint); color: var(--deep); font-weight: 600; white-space: nowrap; }
.prenext { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 30px; font-size: 13px; }
.prenext div { border: 1px solid var(--line); padding: 12px 16px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.prenext a { color: var(--primary); }

/* ---------- 单页 ---------- */
.page-body { background: #fff; border: 1px solid var(--line); padding: 34px; }
.page-intro { background: var(--tint); border-left: 3px solid var(--primary); padding: 14px 18px; font-size: 14px; color: var(--muted); line-height: 1.9; margin-bottom: 26px; }
.page-intro:empty { display: none; }
.child-block { margin-top: 40px; }
.child-block:first-of-type { margin-top: 0; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 12px; }
.tag-cloud a { display: inline-block; border: 1px solid var(--line); padding: 5px 14px; font-size: 13px; color: var(--muted); }
.tag-cloud a:hover { border-color: var(--primary); color: var(--primary); }

/* ---------- 搜索页 ---------- */
.search-tip { font-size: 14px; color: var(--muted); padding-bottom: 16px; border-bottom: 1px solid var(--line); margin-bottom: 6px; }
.search-tip b { color: var(--primary); margin: 0 4px; }

/* ---------- 表单 ---------- */
.form-box { max-width: 620px; }
.form-row { display: grid; grid-template-columns: 90px 1fr; gap: 10px; align-items: center; margin-bottom: 14px; }
.form-row label { text-align: right; color: var(--muted); font-size: 13px; }
.form-row input, .form-row textarea, .form-row select { border: 1px solid var(--line); padding: 9px 12px; width: 100%; }
.form-row input:focus, .form-row textarea:focus { border-color: var(--primary); }

/* ---------- 页脚 ---------- */
.footer { background: var(--deep); color: var(--pri-a); font-size: 13px; }
.foot-grid { display: grid; grid-template-columns: 3fr 2fr 2fr 3fr; gap: 30px; padding: 44px 0 34px; }
.foot-col h4 { color: #fff; font-size: 16px; margin-bottom: 16px; position: relative; padding-bottom: 10px; }
.foot-col h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 26px; height: 2px; background: var(--primary); }
.foot-col p { line-height: 1.9; }
.foot-col ul li { margin-bottom: 8px; }
.foot-col a { color: var(--pri-a); }
.foot-col a:hover { color: #fff; }
.foot-contact li { display: flex; gap: 8px; }
.copyright { background: var(--deep-d); padding: 16px 0; text-align: center; font-size: 12px; line-height: 1.9; }
.copyright a { color: var(--pri-a); }
.copyright a:hover { color: #fff; }

/* ---------- 友情链接 ---------- */
.flink-bar { background: var(--bg); border-top: 1px solid var(--line); padding: 20px 0; font-size: 13px; }
.flink-bar .wrap { display: flex; gap: 14px; align-items: baseline; flex-wrap: wrap; }
.flink-bar b { color: var(--deep); flex-shrink: 0; }
.flink-bar li { display: inline-block; margin-right: 16px; }
.flink-bar a { color: var(--muted); }
.flink-bar a:hover { color: var(--primary); }

/* ---------- 回到顶部 ---------- */
#backtop { position: fixed; right: 18px; bottom: 60px; width: 44px; height: 44px; background: var(--deep); color: #fff; text-align: center; line-height: 44px; cursor: pointer; display: none; z-index: 950; font-size: 12px; }
#backtop:hover { background: var(--primary); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .g4, .g5 { grid-template-columns: repeat(3, 1fr); }
  .g-side { grid-template-columns: 220px 1fr; }
  .banner { height: 340px; }
  .header .wrap { height: 78px; }
  .h-phone { display: none; }
  .foot-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .sec { padding: 34px 0; }
  .sec-title { font-size: 21px; }
  .g3, .g4, .g5 { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .g2 { gap: 14px; }
  .g-side { grid-template-columns: 1fr; }
  .g-side > .side { order: 2; }
  .pro-info h3 { white-space: normal; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
  .article-body table { display: block; width: 100%; overflow-x: auto; }
  .gallery-thumbs { grid-template-columns: repeat(4, 1fr); gap: 8px; }
  .spec-body { overflow-x: auto; }
  .spec th, .spec td { padding: 7px 10px; font-size: 13px; }
  .spec th { width: 88px; }
  .topbar { display: none; }
  .header { position: sticky; top: 0; z-index: 910; box-shadow: 0 2px 10px rgba(13, 36, 64, .08); }
  .header .wrap { height: 64px; }
  .header-r { display: none; }
  .logo-ico { width: 38px; height: 38px; font-size: 22px; }
  .logo-txt .cn { font-size: 19px; }
  .logo-txt .en { font-size: 9px; letter-spacing: 1.5px; }
  .nav { position: relative; background: var(--deep); }
  .nav-ul { display: none; position: fixed; left: 0; right: 0; top: 64px; background: var(--deep); flex-direction: column; z-index: 920; max-height: 60vh; overflow-y: auto; box-shadow: 0 10px 20px rgba(13, 36, 64, .25); }
  .nav-ul.open { display: flex; }
  .nav-item { flex: none; text-align: left; border-top: 1px solid rgba(255, 255, 255, .08); }
  .nav-item > a { padding: 12px 18px; font-size: 15px; }
  .sub { display: block; position: static; transform: none; border: 0; border-top: 1px solid rgba(255, 255, 255, .08); background: var(--deep-d); box-shadow: none; padding: 6px 0; }
  .sub a { color: var(--pri-b); border-bottom: 0; padding: 8px 32px; }
  .sub a:hover { background: none; color: #fff; }
  .nav-btn { display: block; }
  .nav-btn i { background: var(--deep); }
  .banner { height: 210px; }
  .banner-cap { padding: 12px 16px; max-width: 78%; }
  .banner-cap h2 { font-size: 15px; }
  .banner-cap p { display: none; }
  .banner-cap .btn { display: none; }
  .banner-nav { display: none; }
  .about-in { grid-template-columns: 1fr; gap: 24px; }
  .news-item { gap: 12px; }
  .news-thumb, .news-thumb img { width: 110px; height: 78px; }
  .news-txt h3 { font-size: 15px; }
  .news-txt p { display: none; }
  .foot-grid { grid-template-columns: repeat(2, 1fr); gap: 24px 18px; padding: 28px 0 22px; }
  .foot-col:first-child, .foot-col:last-child { grid-column: 1 / -1; }
  .foot-col h4 { font-size: 15px; margin-bottom: 10px; padding-bottom: 8px; }
  .foot-col ul li { margin-bottom: 6px; }
  .foot-col p { line-height: 1.8; }
  .flink-bar { padding: 14px 0; }
  .flink-bar .wrap { gap: 8px 14px; }
  .copyright { padding: 12px 0; font-size: 11px; line-height: 1.8; }
  .prenext { grid-template-columns: 1fr; }
  .grid.g3 > *:last-child:nth-child(odd), .grid.g4 > *:last-child:nth-child(odd), .grid.g5 > *:last-child:nth-child(odd) { grid-column: 1 / -1; }
  .side-box:has(.side-menu) { display: none; }
  .cat-chips { display: flex; gap: 8px; overflow-x: auto; padding: 0 0 14px; scrollbar-width: none; -webkit-overflow-scrolling: touch; }
  .cat-chips::-webkit-scrollbar { display: none; }
  .cat-chips a { flex: 0 0 auto; padding: 7px 14px; border: 1px solid var(--line); border-radius: 999px; background: #fff; font-size: 13px; color: var(--ink); white-space: nowrap; }
  .cat-chips a.on { background: var(--primary); border-color: var(--primary); color: #fff; }
  .page-body { padding: 20px 16px; }
  .form-row { grid-template-columns: 1fr; }
  .form-row label { text-align: left; }
  #backtop { bottom: 20px; }
}
@media (max-width: 560px) {
  .g4.cat-tiles { grid-template-columns: repeat(2, 1fr); }
  .cat-tile { padding: 16px 10px; }
  .cat-tile .t { font-size: 15px; }
  .pro-info p { display: none; }
  .spec th, .spec td { font-size: 12px; }
  .g3 > .news-col { grid-column: 1 / -1; }
  .about-stat b { font-size: 22px; }
  .article-hd h1 { font-size: 20px; }
  .cta-band { text-align: center; }
  .cta-band .wrap { justify-content: center; }
}

/* ---------- 悬浮客服 ---------- */
.float-bar { position: fixed; right: 0; top: 38%; z-index: 90; display: flex; flex-direction: column; }
.fb-btn { width: 62px; height: 60px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; background: #fff; border: 1px solid var(--line); border-right: 0; margin-top: -1px; color: var(--ink); text-decoration: none; transition: background .15s, color .15s; }
.fb-btn svg { display: block; }
.fb-btn em { font-style: normal; font-size: 11px; line-height: 1; }
.fb-btn:hover { background: var(--primary); border-color: var(--primary); color: #fff; }
.fb-wx { border-radius: 8px 0 0 0; }
.fb-tel { border-radius: 0 0 0 8px; }
.fb-qr { position: absolute; right: 70px; top: 0; width: 160px; padding: 10px; background: #fff; border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 8px 24px rgba(15, 34, 67, .16); opacity: 0; visibility: hidden; transform: translateX(8px); transition: all .18s; text-align: center; }
.fb-qr img { width: 100%; display: block; border-radius: 4px; }
.fb-qr span { display: block; margin-top: 6px; font-size: 12px; color: var(--muted); }
.fb-wx:hover ~ .fb-qr, .fb-qr.show { opacity: 1; visibility: visible; transform: translateX(0); }
@media (max-width: 768px) {
  .float-bar { top: 42%; right: 0; bottom: auto; flex-direction: column; gap: 0; }
  .fb-btn { width: 46px; height: 46px; border-radius: 0 !important; border: 0 !important; margin: 0; color: #fff !important; box-shadow: none; }
  .float-bar .fb-wx { background: #2aae67; border-radius: 6px 0 0 0; }
  .float-bar .fb-qq { background: #12b7f5; }
  .float-bar .fb-tel { background: #ff8300; border-radius: 0 0 0 6px; }
  .fb-btn em { display: none; }
  .fb-btn svg { width: 22px; height: 22px; }
  .fb-qr { right: 54px; top: 0; left: auto; bottom: auto; transform: translateX(8px); width: 150px; }
  .fb-qr.show { transform: translateX(0); }
}