/* 海德防雷 官网样式表
   设计原则：工业 B2B 风格，深蓝主色 + 安全红点缀，白底分区，无多余装饰
   图片与字体全部走系统资源，不引入任何外部请求（适配 4M 带宽） */

:root {
  --brand: #0a55a0;
  --brand-dark: #073c73;
  --brand-soft: #eaf2fa;
  --accent: #d8232a;
  --ink: #101a24;
  --ink-2: #3c4b5a;
  --ink-3: #6b7a89;
  --line: #e2e8ef;
  --bg: #ffffff;
  --bg-soft: #f5f8fb;
  --radius: 8px;
  --wrap: 1200px;
  --font: -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; font-family: var(--font); color: var(--ink);
  font-size: 15px; line-height: 1.75; background: var(--bg);
}
img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--brand); }
h1, h2, h3, h4 { margin: 0; line-height: 1.35; font-weight: 700; }
ul { margin: 0; padding: 0; list-style: none; }
p { margin: 0 0 14px; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------- 顶部信息条 + 主导航 ---------- */
.topbar { background: var(--brand-dark); color: #cfe0f2; font-size: 13px; }
.topbar .wrap { display: flex; justify-content: space-between; align-items: center; height: 36px; }
.topbar a { color: #cfe0f2; text-decoration: none; }
.topbar a:hover { color: #fff; }
.topbar .tb-left { display: flex; align-items: center; gap: 7px; }
.topbar .tb-left b { color: #fff; font-size: 14px; letter-spacing: .3px; }
.topbar .tb-right { display: flex; align-items: center; gap: 16px; }
.topbar .tb-right > a, .topbar .tb-right > a + a { position: relative; }
.topbar .tb-right a + a::before {
  content: ""; position: absolute; left: -9px; top: 4px; bottom: 4px; width: 1px; background: rgba(255,255,255,.18);
}

.header { background: #fff; border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 50; }
.header .wrap { display: flex; align-items: center; gap: 28px; height: 76px; }
.logo { display: flex; align-items: center; gap: 10px; flex: none; }
.logo-mark {
  width: 42px; height: 42px; border-radius: 9px; color: #fff; flex: none;
  background: linear-gradient(135deg, #0a55a0, #073c73);
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; font-weight: 700; letter-spacing: .5px;
}
.logo img { height: 42px; width: auto; }
.logo .logo-text b { display: block; font-size: 17px; letter-spacing: .5px; }
.logo .logo-text span { display: block; font-size: 11px; color: var(--ink-3); letter-spacing: .6px; }

.nav { display: flex; align-items: center; margin-left: auto; }
.nav > li { position: relative; }
.nav > li > a {
  display: block; padding: 26px 16px; font-size: 15px; font-weight: 600; color: var(--ink);
  border-bottom: 3px solid transparent;
}
.nav > li > a:hover, .nav > li.active > a { color: var(--brand); border-bottom-color: var(--brand); }
.mega {
  position: absolute; left: 50%; transform: translateX(-50%); top: 100%;
  width: 720px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: 0 12px 32px rgba(10, 40, 80, .12); padding: 18px 20px; display: none;
}
.nav > li:hover .mega { display: block; }
.mega .mega-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px 10px; }
.mega a { display: block; padding: 7px 10px; border-radius: 6px; font-size: 14px; color: var(--ink-2); }
.mega a:hover { background: var(--brand-soft); color: var(--brand); }
.mega-wide { width: auto; left: 0; right: 0; transform: none; border-radius: 0 0 8px 8px; padding: 20px 0; }
.nav > li.has-wide { position: static; }   /* 通栏菜单相对页头定位，否则宽度只有"海德产品"四个字，文字会被挤成竖排 */
.mega-wide .mega-cols { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.mega-cols { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px 22px; }
.mega-col b { display: block; font-size: 14px; color: var(--ink); padding: 0 10px 8px; border-bottom: 1px solid var(--line); margin-bottom: 6px; }
.mega-col a { display: flex; justify-content: space-between; gap: 8px; }
.mega-col .cnt { color: #9aa8b6; font-size: 12px; }
.nav-cta { flex: none; }
.nav-search {
  flex: none; display: flex; align-items: center; margin-right: 10px;
  border: 1px solid var(--line); border-radius: 18px; background: #fff; overflow: hidden;
  transition: border-color .18s, box-shadow .18s;
}
.nav-search input {
  width: 150px; border: 0; outline: 0; padding: 7px 2px 7px 14px;
  font: inherit; font-size: 13px; color: var(--ink); background: transparent;
}
.nav-search input::placeholder { color: var(--ink-3); }
.nav-search button {
  flex: none; width: 34px; height: 34px; display: flex; align-items: center; justify-content: center;
  border: 0; background: transparent; color: var(--ink-2); cursor: pointer; padding: 0;
}
.nav-search button:hover { color: var(--brand); background: var(--brand-soft); }
.nav-search:focus-within { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(10, 85, 160, .12); }

/* ---------- 产品搜索页 ---------- */
.search-bar { display: flex; gap: 10px; margin: 22px 0 12px; flex-wrap: wrap; max-width: 520px; }.search-bar input[type="search"] {
  flex: 1; min-width: 200px; padding: 10px 14px; border: 1px solid var(--line);
  border-radius: 8px; font: inherit; font-size: 14px; background: #fff; color: var(--ink);
}
.search-bar input:focus { outline: 2px solid rgba(10, 85, 160, .18); border-color: var(--brand); }
.search-bar select {
  padding: 10px 14px; border: 1px solid var(--line); border-radius: 8px;
  background: #fff; font: inherit; font-size: 14px; color: var(--ink); max-width: 200px;
}
.search-bar button {
  padding: 10px 22px; border: 0; border-radius: 8px; background: var(--brand);
  color: #fff; font: inherit; font-size: 14px; font-weight: 600; cursor: pointer;
}
.search-bar button:hover { background: var(--brand-dark); }
.search-hint { font-size: 13px; color: var(--ink-3); margin: 0; }
.search-stat { font-size: 14px; color: var(--ink-2); margin: 16px 0 18px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 11px 22px; border-radius: 6px;
  font-size: 15px; font-weight: 600; cursor: pointer; border: 1px solid transparent; transition: .18s;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); color: #fff; }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: #b81b21; color: #fff; }
.btn-ghost { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; }

/* ---------- 首屏 ---------- */
.hero {
  color: #fff;
  background:
    linear-gradient(100deg, rgba(6, 30, 58, .95) 0%, rgba(7, 44, 84, .88) 38%, rgba(9, 56, 106, .58) 72%, rgba(10, 60, 116, .42) 100%),
    url(../scene/hero-wind.webp) center 62% / cover no-repeat,
    linear-gradient(135deg, #0b2a4d 0%, #0a4c8f 100%);
}
.hero-inner { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; padding: 64px 0; }
.hero h1 { font-size: 38px; letter-spacing: .5px; }
.hero h1 em { font-style: normal; color: #ffd66b; }
.hero .lede { font-size: 17px; color: #cddff1; margin: 18px 0 26px; max-width: 620px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-facts { display: flex; gap: 26px; margin-top: 34px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.16); }
.hero-facts div b { display: block; font-size: 22px; }
.hero-facts div span { font-size: 13px; color: #a9c4de; }
.hero-card { background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.16); border-radius: 12px; padding: 22px; }
.hero-card h3 { font-size: 16px; margin-bottom: 14px; color: #fff; }
.hero-card img { width: 100%; height: auto; border-radius: 8px; background: rgba(255,255,255,.15); }
.hero-card dl { margin: 0; display: grid; grid-template-columns: 96px 1fr; gap: 8px 12px; font-size: 14px; }
.hero-card dt { color: #a9c4de; }
.hero-card dd { margin: 0; color: #fff; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 999px;
  background: rgba(255, 255, 255, .12); border: 1px solid rgba(255, 255, 255, .18);
  color: #e6f0fa; font-size: 12.5px; white-space: nowrap;
}
.hero-badge svg { color: #7fd1a3; flex: none; }

/* ---------- 工程案例分组 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.case-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; }
.case-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 12px; }
.case-head b { font-size: 16px; }
.case-head span { font-size: 13px; color: var(--brand); font-weight: 600; }
.case-card ul { margin: 0; padding: 0; }
.case-card li {
  font-size: 13.5px; color: var(--ink-2); padding: 5px 0 5px 14px; position: relative;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.case-card li::before { content: ""; position: absolute; left: 0; top: 14px; width: 5px; height: 5px; border-radius: 50%; background: var(--brand); }

/* ---------- 通用区块 ---------- */
.section { padding: 62px 0; }
.section.soft { background: var(--bg-soft); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 30px; }
.section-head h2 { font-size: 27px; position: relative; padding-left: 14px; }
.section-head h2::before { content: ""; position: absolute; left: 0; top: 6px; bottom: 6px; width: 4px; border-radius: 2px; background: var(--brand); }
.section-head p { color: var(--ink-3); font-size: 14px; margin: 6px 0 0 14px; }
.section-head .more { font-size: 14px; color: var(--brand); font-weight: 600; flex: none; }

/* ---------- 产品分类 ---------- */
.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.scene-card {
  position: relative; display: block; height: 250px; border-radius: var(--radius);
  overflow: hidden; box-shadow: 0 4px 16px rgba(10, 40, 80, .10); background: #0f2d4a;
}
.scene-bg { position: absolute; inset: 0; background-size: cover; background-position: center; transition: transform .45s ease; }
.scene-card:hover .scene-bg { transform: scale(1.05); }
.scene-cap {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 34px 20px 18px; color: #fff;
  background: linear-gradient(transparent, rgba(6, 20, 35, .88));
}
.scene-cap b { display: block; font-size: 18px; margin-bottom: 4px; }
.scene-cap i { font-style: normal; font-size: 13px; color: #c9dcee; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.chip {
  padding: 9px 18px; border: 1px solid var(--line); border-radius: 999px;
  background: #fff; font-size: 14px; color: var(--ink-2);
}
.chip:hover { border-color: var(--brand); color: var(--brand); }

.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.cat-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px;
  display: flex; flex-direction: column; gap: 6px; transition: .18s;
}
.cat-card:hover { border-color: var(--brand); box-shadow: 0 6px 20px rgba(10, 60, 120, .10); transform: translateY(-2px); }
.cat-card b { font-size: 16px; }
.cat-card span { font-size: 13px; color: var(--ink-3); }
.cat-card .rec { display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  margin-top: 2px; padding-top: 10px; border-top: 1px dashed var(--line); }
.cat-card .rec i { font-style: normal; font-size: 12px; color: var(--ink-3); }
.cat-card .rec a { font-size: 12px; color: var(--brand); border: 1px solid var(--line);
  border-radius: 4px; padding: 1px 7px; background: var(--bg-soft); }
.cat-card .rec a:hover { border-color: var(--brand); background: #fff; }
.case-rec { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 0 0 12px; }
.case-rec i { font-style: normal; font-size: 12px; color: var(--ink-3); }
.case-rec a { font-size: 12px; color: var(--brand); border: 1px solid var(--line);
  border-radius: 4px; padding: 1px 7px; background: var(--bg-soft); }
.case-rec a:hover { border-color: var(--brand); background: #fff; }

/* ---------- 产品卡 ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.prod-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: .18s; }
.prod-card:hover { border-color: var(--brand); box-shadow: 0 8px 24px rgba(10, 60, 120, .12); }
.prod-card .thumb { aspect-ratio: 4 / 3; background: #fff; display: flex; align-items: center; justify-content: center; padding: 14px; border-bottom: 1px solid var(--line); }
.prod-card .thumb img { width: 180px; height: 140px; object-fit: contain; }
.prod-card .body { padding: 14px 16px 18px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.prod-card b { font-size: 15px; line-height: 1.5; }
.prod-card .model { font-size: 12px; color: var(--brand); font-weight: 600; letter-spacing: .3px; }
.prod-card .desc { font-size: 13px; color: var(--ink-3); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- 优势 / 数据 ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.adv { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 20px; }
.adv .ico { width: 42px; height: 42px; border-radius: 10px; background: var(--brand-soft); color: var(--brand); display: flex; align-items: center; justify-content: center; margin-bottom: 14px; }
.adv b { display: block; font-size: 16px; margin-bottom: 6px; }
.adv p { font-size: 14px; color: var(--ink-3); margin: 0; }

/* ---------- 案例 ---------- */
.case-cols { columns: 3; column-gap: 24px; }
.case-cols li { break-inside: avoid; font-size: 14px; color: var(--ink-2); padding: 6px 0 6px 16px; position: relative; }
.case-cols li::before { content: ""; position: absolute; left: 0; top: 15px; width: 5px; height: 5px; border-radius: 50%; background: var(--brand); }

/* ---------- 新闻 ---------- */
.news-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.news-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.news-item time { font-size: 13px; color: var(--ink-3); }
.news-item h3 { font-size: 16px; margin: 8px 0 8px; }
.news-item p { font-size: 14px; color: var(--ink-3); margin: 0; }

/* ---------- CTA 带 ---------- */
.cta-band { background: var(--brand-dark); color: #fff; }
.cta-band .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-top: 34px; padding-bottom: 34px; }
.cta-band h2 { font-size: 22px; }
.cta-band p { margin: 6px 0 0; color: #b7cde4; font-size: 14px; }
.cta-band .actions { display: flex; gap: 12px; flex: none; }

/* ---------- 页脚 ---------- */
.footer { background: #0d1b29; color: #93a6b8; font-size: 14px; padding: 48px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 30px; }
.footer h3 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.footer a { color: #93a6b8; }
.footer a:hover { color: #fff; }
.footer li { padding: 4px 0; }
.footer .contact li { display: flex; gap: 8px; }
.footer .contact b { color: #fff; font-size: 20px; letter-spacing: .5px; display: block; margin-bottom: 6px; }
.footer-bottom { border-top: 1px solid #1d2d3d; margin-top: 38px; padding: 18px 0; font-size: 13px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ---------- 面包屑 / 列表页 ---------- */
.crumb { font-size: 13px; color: var(--ink-3); padding: 16px 0; }
.crumb a { color: var(--ink-3); }
.crumb a:hover { color: var(--brand); }
.page-head { background: var(--bg-soft); border-bottom: 1px solid var(--line); padding: 28px 0 30px; }
.page-head h1 { font-size: 28px; }
.page-head p { color: var(--ink-3); margin: 8px 0 0; font-size: 14px; }
.about-banner { width: 100%; height: auto; border-radius: 10px; display: block; margin: 22px 0 0; }
.layout { display: grid; grid-template-columns: 250px 1fr; gap: 32px; padding: 32px 0 56px; align-items: start; }
.side { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; position: sticky; top: 96px; }
.side h3 { background: var(--brand); color: #fff; font-size: 16px; padding: 13px 16px; }
.side a { display: block; padding: 11px 16px; font-size: 15px; border-top: 1px solid var(--line); color: var(--ink-2); }
.side a:hover { background: var(--brand-soft); color: var(--brand); }
.side a.active { background: var(--brand-soft); color: var(--brand); font-weight: 600; border-left: 3px solid var(--brand); padding-left: 13px; }
.side-group { display: flex; align-items: center; gap: 6px; width: 100%; padding: 12px 16px; font-size: 15px; font-weight: 600; color: var(--ink-2); background: var(--bg-soft); border: none; border-top: 1px solid var(--line); letter-spacing: .5px; cursor: pointer; text-align: left; }
.side-group:hover { color: var(--brand); }
.side-group .caret { margin-left: auto; font-size: 12px; transition: transform .2s; }
.side-cat.open .side-group .caret { transform: rotate(90deg); }
.side-sub { display: none; }
.side-cat.open .side-sub { display: block; }
.side a.sub { padding-left: 26px; font-size: 14px; }
.side a.sub.active { padding-left: 23px; }
.side .cnt { color: #9aa8b6; font-size: 13px; float: right; }

/* ---------- 产品大类 / 资质 ---------- */
.group-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.group-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.group-card .group-head h3 { font-size: 17px; }
.group-card .group-head p { font-size: 13px; color: var(--ink-3); margin: 6px 0 14px; }
.group-links { display: flex; flex-direction: column; gap: 2px; }
.group-links a { display: flex; justify-content: space-between; align-items: center; padding: 7px 10px; border-radius: 6px; font-size: 14px; color: var(--ink-2); }
.group-links a:hover { background: var(--brand-soft); color: var(--brand); }
.group-links .cnt { color: #9aa8b6; font-size: 12px; }
/* 产品中心页大类分类折叠 */
.cat-fold-head { display: flex; align-items: center; gap: 8px; border: none; background: none; cursor: pointer; padding: 0; }
.cat-fold-head h2 { margin: 0; }
.cat-fold-head .caret { font-size: 12px; color: var(--ink-3); transition: transform .2s; }
.cat-fold.open .cat-fold-head .caret { transform: rotate(90deg); }
.cat-fold .group-links { display: none; }
.cat-fold.open .group-links { display: block; }
.qual-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.qual { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.qual .ico { width: 36px; height: 36px; border-radius: 9px; background: var(--brand-soft); color: var(--brand); display: flex; align-items: center; justify-content: center; margin-bottom: 12px; }
.qual b { display: block; font-size: 15px; margin-bottom: 6px; }
.qual p { font-size: 13px; color: var(--ink-3); margin: 0; }
.pager { display: flex; justify-content: center; gap: 8px; margin-top: 32px; }
.pager a, .pager span { min-width: 38px; height: 38px; display: flex; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 6px; font-size: 14px; padding: 0 12px; }
.pager a:hover { border-color: var(--brand); color: var(--brand); }
.pager .cur { background: var(--brand); border-color: var(--brand); color: #fff; }
.empty { text-align: center; color: var(--ink-3); padding: 60px 0; border: 1px dashed var(--line); border-radius: var(--radius); }

/* ---------- 产品详情 ---------- */
.detail { display: grid; grid-template-columns: 1.05fr 1fr; gap: 40px; padding-bottom: 40px; }
.gallery .main { border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; display: flex; align-items: center; justify-content: center; min-height: 320px; }
.gallery .main img { max-height: 420px; object-fit: contain; }
.gallery .thumbs { display: flex; gap: 10px; margin-top: 12px; }
.gallery .thumbs img { width: 72px; height: 72px; object-fit: contain; border: 1px solid var(--line); border-radius: 6px; padding: 4px; cursor: pointer; background: #fff; }
.gallery .thumbs img:hover { border-color: var(--brand); }
.detail-info h1 { font-size: 27px; }
.detail-info .model-line { color: var(--brand); font-weight: 600; margin: 8px 0 14px; }
.detail-info .lead { color: var(--ink-2); }
.key-facts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin: 20px 0; }
.key-facts div { background: var(--bg-soft); border-radius: 6px; padding: 12px 14px; font-size: 13px; }
.key-facts b { display: block; font-size: 15px; color: var(--ink); }
.detail-actions { display: flex; gap: 12px; margin-top: 22px; flex-wrap: wrap; }
.prose { padding: 8px 0 24px; }
.prose h2 { font-size: 20px; margin: 0 0 14px; padding-left: 12px; border-left: 4px solid var(--brand); }
.prose p { color: var(--ink-2); }
.spec-imgs img { border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 14px; }
.prose h3 { font-size: 15px; margin: 18px 0 8px; color: var(--ink); font-weight: 600; }
.spec-table-wrap { margin-bottom: 24px; overflow-x: auto; }
.spec-table { width: 100%; max-width: 100%; border-collapse: collapse; font-size: 14px; line-height: 1.6; }
.spec-table th, .spec-table td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; vertical-align: top; word-break: break-word; overflow-wrap: anywhere; }
.spec-table th { background: var(--bg-soft); color: var(--ink); font-weight: 600; text-align: center; white-space: nowrap; }
.spec-table td:first-child { font-weight: 600; color: var(--ink); }
.spec-table td { color: var(--ink-2); }
.spec-table td.common { background: var(--bg-soft); color: var(--ink-2); text-align: center; }
/* ---------- 技术支持：选型指南 / 常见问题 ---------- */
.tech-block { padding: 26px 0 0; }
.tech-block h2 { font-size: 20px; margin: 0 0 16px; padding-left: 12px; border-left: 4px solid var(--brand); }
.tech-item { border-left: 2px solid var(--line); padding: 0 0 0 14px; margin-bottom: 16px; }
.tech-item b { display: block; color: var(--ink); margin-bottom: 2px; }
.tech-item p { margin: 0; color: var(--ink-2); }
.tech-table-wrap { overflow-x: auto; }
.tech-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.tech-table th, .tech-table td { border: 1px solid var(--line); padding: 9px 12px; text-align: left; }
.tech-table th { background: var(--bg-soft); font-weight: 700; white-space: nowrap; }
.tech-table td { color: var(--ink-2); }
.faq { border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 15px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 700; }
.faq summary::marker { color: var(--brand); }
.faq p { margin: 10px 0 0; color: var(--ink-2); }
.tech-notes { list-style: none; }
.tech-notes li { position: relative; padding-left: 20px; margin-bottom: 10px; color: var(--ink-2); }
.tech-notes li::before { content: ""; position: absolute; left: 0; top: 9px; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.related { border-top: 1px solid var(--line); padding-top: 26px; }
.related h2 { font-size: 19px; margin-bottom: 16px; }
.inquiry { background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.inquiry h3 { font-size: 17px; margin-bottom: 4px; }
.inquiry p.hint { font-size: 13px; color: var(--ink-3); margin-bottom: 16px; }
.field { margin-bottom: 12px; }
.field label { display: block; font-size: 13px; color: var(--ink-2); margin-bottom: 5px; }
.field label i { color: var(--accent); font-style: normal; }
.field input, .field textarea, .field select {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 6px;
  font: inherit; font-size: 14px; background: #fff; color: var(--ink);
}
.field input:focus, .field textarea:focus { outline: 2px solid rgba(10, 85, 160, .18); border-color: var(--brand); }
.field textarea { min-height: 96px; resize: vertical; }
.hp { position: absolute; left: -9999px; }
.form-note { font-size: 12px; color: var(--ink-3); margin-top: 10px; }
.form-tips { font-size: 12px; color: var(--ink-3); margin: 12px 0 0; padding: 10px 12px;
  background: var(--bg-soft); border-radius: 6px; }
/* ---------- 页边询价抽屉（产品详情页，默认收起不占版面） ---------- */
.edge-inquiry { position: fixed; right: 0; top: 120px; z-index: 70; }   /* 必须高于页头(50)和浮动客服(60)，否则弹窗被导航压住 */
.edge-inquiry > summary {
  list-style: none; cursor: pointer; background: var(--brand); color: #fff;
  writing-mode: vertical-rl; letter-spacing: 4px; font-size: 13px; font-weight: 600;
  padding: 16px 9px; border-radius: 8px 0 0 8px;
  box-shadow: -2px 0 12px rgba(10, 40, 80, .18);
}
.edge-inquiry > summary::-webkit-details-marker { display: none; }
.edge-inquiry > summary:hover { background: var(--brand-dark); }
.edge-inquiry[open] > summary { background: var(--brand-dark); }
.edge-inquiry-panel {
  position: fixed; right: 52px; top: 120px;          /* 贴着吸顶导航下沿，避免互相遮挡 */
  width: 360px; max-height: calc(100vh - 156px); overflow: auto; padding: 20px 22px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: 0 18px 48px rgba(10, 40, 80, .22);
  max-height: min(72vh, calc(100vh - 156px));
}
.edge-inquiry-panel h3 { font-size: 17px; margin-bottom: 4px; }
.edge-inquiry-panel .hint { font-size: 13px; color: var(--ink-3); margin-bottom: 14px; }
.edge-inquiry-panel .field { margin-bottom: 9px; }
.edge-inquiry-panel .field textarea { min-height: 74px; }
.edge-inquiry-panel .form-tips { display: none; }          /* 抽屉里省掉大段提示，尽量一屏放下 */
.edge-inquiry-panel .btn { width: 100%; }
.edge-inquiry-panel .form-note { display: none; }   /* 抽屉底部不再显示"提交后信息直接发送至企业微信…" */
/* 抽屉里排成两列，短屏也放得下；提交按钮吸底，永远看得见 */
.edge-inquiry-panel form { display: grid; grid-template-columns: 1fr 1fr; gap: 0 10px; align-items: start; }
.edge-inquiry-panel .field:nth-of-type(5),
.edge-inquiry-panel .field:nth-of-type(6) { grid-column: 1 / -1; }
.edge-inquiry-panel button[type="submit"] { grid-column: 1 / -1; position: sticky; bottom: 0; }

/* ---------- 浮动客服 ---------- */
.float-service { position: fixed; right: 18px; bottom: 22px; z-index: 60; display: flex; flex-direction: column; gap: 10px; }
.float-service a, .float-service button {
  width: 52px; height: 52px; border-radius: 50%; background: #fff; border: 1px solid var(--line);
  box-shadow: 0 6px 18px rgba(10, 40, 80, .16); display: flex; align-items: center; justify-content: center;
  color: var(--brand); cursor: pointer; position: relative;
}
.float-service a:hover { background: var(--brand); color: #fff; }
.float-service .wx { background: #07c160; border-color: #07c160; color: #fff; }
.qrcode-pop { position: absolute; right: 64px; bottom: 0; width: 170px; background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 10px; display: none; box-shadow: 0 10px 28px rgba(10,40,80,.18); box-sizing: border-box; }
.qrcode-pop img { width: 150px; height: 150px; object-fit: cover; }
.qrcode-pop span { display: block; text-align: center; font-size: 12px; color: var(--ink-3); }
.float-service .wx:hover .qrcode-pop, .float-service .wx:focus .qrcode-pop, .float-service .wx.show .qrcode-pop { display: block; }
.tel-pop { position: absolute; right: 64px; bottom: 0; width: 170px; box-sizing: border-box; background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 12px 10px; display: none; box-shadow: 0 10px 28px rgba(10,40,80,.18); text-align: center; }
.float-service a[href^="tel:"]:hover .tel-pop, .float-service a[href^="tel:"]:focus .tel-pop, .float-service a[href^="tel:"].show .tel-pop { display: block; }
.tel-pop strong { display: block; font-size: 13px; color: var(--ink-2); margin-bottom: 6px; }
.tel-pop .num { display: block; font-size: 19px; font-weight: 700; color: #0a55a0; letter-spacing: .5px; }
.tel-pop .tip { display: block; font-size: 11px; color: var(--ink-3); margin-top: 6px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .cat-grid, .prod-grid, .adv-grid { grid-template-columns: repeat(3, 1fr); }
  .group-grid, .qual-grid { grid-template-columns: repeat(2, 1fr); }
  .case-cols { columns: 2; }
  .nav-search input { width: 90px; }
}
@media (max-width: 900px) {
  .nav { display: none; }
  .nav-toggle { display: block; margin-left: auto; }
  .nav-search { display: none; }
  .nav.open { display: block; position: absolute; left: 0; right: 0; top: 100%; background: #fff; border-bottom: 1px solid var(--line); padding: 8px 0; box-shadow: 0 12px 24px rgba(10,40,80,.10); }
  .nav.open > li > a { padding: 12px 20px; border-bottom: 0; }
  .mega { position: static; transform: none; width: auto; box-shadow: none; border: 0; border-top: 1px solid var(--line); }
  .mega .mega-grid { grid-template-columns: repeat(2, 1fr); }
  .mega-wide { padding: 12px 0; border-radius: 0; }
  .mega-cols { grid-template-columns: 1fr; }
  .mega-col { padding: 6px 0 10px; }
  .header .wrap { position: relative; }
  .hero-inner { grid-template-columns: 1fr; padding: 40px 0; }
  .hero h1 { font-size: 28px; }
  .layout { grid-template-columns: 1fr; }
  .side { position: static; }
  .detail { grid-template-columns: 1fr; gap: 24px; }
  .scene-grid { grid-template-columns: 1fr; }
  .scene-card { height: 190px; }
  .case-grid { grid-template-columns: 1fr; }
  .news-list { grid-template-columns: 1fr 1fr; }
  .cta-band .wrap { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 620px) {
  .edge-inquiry { top: auto; bottom: 96px; }
  .edge-inquiry-panel { right: 12px; left: 12px; width: auto; top: auto; bottom: 16px;
    transform: none; max-height: 72vh; }
  .edge-inquiry > summary { padding: 12px 7px; letter-spacing: 2px; }
  .topbar .wrap { font-size: 12px; height: auto; padding: 6px 20px; flex-direction: column; gap: 4px; align-items: flex-start; }
  .cat-grid, .prod-grid, .adv-grid, .news-list { grid-template-columns: 1fr 1fr; }
  .group-grid, .qual-grid { grid-template-columns: 1fr; }
  .news-list { grid-template-columns: 1fr; }
  .hero-facts { flex-wrap: wrap; gap: 18px; }
  .case-cols { columns: 1; }
  .section { padding: 40px 0; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .key-facts { grid-template-columns: 1fr; }
}

.dlbox { margin-top: 4px; }
.dlbox > summary { list-style: none; cursor: pointer; }
.dlbox > summary::-webkit-details-marker { display: none; }
.dlbox-body { margin-top: 10px; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--radius); background: #f7f9fc; }
.dlbox-body p { margin: 0 0 10px; font-size: 13px; color: var(--ink-3); }
.dlbox-body .btn { margin-right: 8px; }