/* ============================================
   恒固彩钢 HENGGU STEEL — 全站样式
   ============================================ */

/* ---------- 字体（本地化） ---------- */
@font-face {
  font-family: "Barlow Condensed";
  src: url("../fonts/barlow-condensed-600.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}
@font-face {
  font-family: "Barlow Condensed";
  src: url("../fonts/barlow-condensed-700.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
}
@font-face {
  font-family: "Barlow";
  src: url("../fonts/barlow-400.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Barlow";
  src: url("../fonts/barlow-500.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: "Barlow";
  src: url("../fonts/barlow-600.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}

/* ---------- 设计令牌 ---------- */
:root {
  --blue-900: #0c2440;
  --blue-800: #123458;
  --blue-700: #16467c;
  --blue-600: #1c5a9e;
  --blue-100: #e8f0f9;
  --orange: #e8710a;
  --orange-dark: #c95f06;
  --ink: #232a33;
  --gray-700: #4a5560;
  --gray-500: #7c8894;
  --gray-200: #dde3ea;
  --gray-100: #f2f5f8;
  --white: #ffffff;
  --font-zh: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-en: "Barlow", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-num: "Barlow Condensed", "PingFang SC", sans-serif;
  --shadow-sm: 0 2px 8px rgba(12, 36, 64, .08);
  --shadow-md: 0 10px 30px rgba(12, 36, 64, .12);
  --shadow-lg: 0 18px 48px rgba(12, 36, 64, .18);
  --radius: 6px;
  --header-h: 76px;
}

/* ---------- 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-zh);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--white);
  text-wrap: pretty;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
.container { width: min(1200px, 92%); margin-inline: auto; }

/* ---------- 通用版式 ---------- */
.section { padding: 88px 0; }
.section--gray { background: var(--gray-100); }
.section-head { text-align: center; margin-bottom: 56px; }
.section-head .en {
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .35em;
  text-transform: uppercase;
  color: var(--orange);
  display: block;
  margin-bottom: 10px;
}
.section-head h2 {
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 700;
  color: var(--blue-900);
  letter-spacing: .04em;
}
.section-head p { margin-top: 14px; color: var(--gray-500); max-width: 640px; margin-inline: auto; }
.section-head--left { text-align: left; margin-bottom: 0; }
.section-head--left p { margin-inline: 0; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 34px;
  background: var(--orange);
  color: var(--white);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: .12em;
  border-radius: var(--radius);
  transition: background .25s ease, transform .25s ease, box-shadow .25s ease;
}
.btn:hover { background: var(--orange-dark); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(232, 113, 10, .35); }
.btn--ghost {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, .55);
  color: var(--white);
}
.btn--ghost:hover { background: rgba(255, 255, 255, .14); box-shadow: none; }
.btn--blue { background: var(--blue-700); }
.btn--blue:hover { background: var(--blue-800); box-shadow: 0 10px 24px rgba(18, 52, 88, .3); }

/* 滚动进场（仅在 JS 可用时启用隐藏态，无 JS 时内容直接可见） */
html.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
html.js .reveal.is-visible { opacity: 1; transform: none; }

/* ---------- 顶部信息条 ---------- */
.topbar {
  background: var(--blue-900);
  color: rgba(255, 255, 255, .82);
  font-size: 13px;
  padding: 8px 0;
}
.topbar .container { display: flex; justify-content: space-between; gap: 16px; }
.topbar span { display: inline-flex; align-items: center; gap: 7px; }
.topbar svg { width: 14px; height: 14px; fill: var(--orange); flex: none; }
.topbar .right span + span { margin-left: 26px; }

/* ---------- 头部导航 ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .97);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-sm);
}
.header .container {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo { display: flex; align-items: center; gap: 12px; flex: none; }
.logo svg { width: 44px; height: 44px; }
.logo .name { font-size: 21px; font-weight: 700; color: var(--blue-900); letter-spacing: .06em; line-height: 1.2; }
.logo .name small {
  display: block;
  font-family: var(--font-num);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .3em;
  color: var(--gray-500);
}
.nav { display: flex; gap: 6px; }
.nav a {
  position: relative;
  padding: 10px 18px;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  border-radius: var(--radius);
  transition: color .2s ease, background .2s ease;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 4px;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s ease;
}
.nav a:hover { color: var(--blue-700); }
.nav a:hover::after, .nav a.active::after { transform: scaleX(1); }
.nav a.active { color: var(--blue-700); font-weight: 600; }
.header-cta {
  flex: none;
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: .04em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.header-cta small { display: block; font-family: var(--font-zh); font-size: 11px; font-weight: 400; color: var(--gray-500); letter-spacing: .1em; }
.header-cta svg { width: 22px; height: 22px; fill: var(--orange); }
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border: 0; background: none; cursor: pointer;
  flex-direction: column; justify-content: center; align-items: center; gap: 6px;
}
.nav-toggle i { display: block; width: 24px; height: 2px; background: var(--blue-900); transition: transform .25s ease, opacity .25s ease; }
.nav-toggle.open i:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle.open i:nth-child(2) { opacity: 0; }
.nav-toggle.open i:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  color: var(--white);
  background: var(--blue-900);
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .55; }
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(12, 36, 64, .92) 20%, rgba(12, 36, 64, .45) 60%, rgba(12, 36, 64, .2));
}
.hero .container { position: relative; z-index: 2; padding: 90px 0; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  letter-spacing: .25em;
  color: #ffd9b3;
  border: 1px solid rgba(255, 217, 179, .4);
  padding: 7px 18px;
  border-radius: 99px;
  margin-bottom: 26px;
}
.hero-tag::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--orange); }
.hero h1 {
  font-size: clamp(38px, 5.4vw, 62px);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: .03em;
  max-width: 720px;
}
.hero h1 em { font-style: normal; color: #ffa14d; }
.hero p.sub {
  margin: 24px 0 40px;
  font-size: 18px;
  color: rgba(255, 255, 255, .85);
  max-width: 560px;
}
.hero-actions { display: flex; gap: 18px; flex-wrap: wrap; }

/* 数据带 */
.stats { background: var(--blue-800); color: var(--white); padding: 0; }
.stats .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat {
  padding: 40px 20px;
  text-align: center;
  border-left: 1px solid rgba(255, 255, 255, .12);
}
.stat:first-child { border-left: 0; }
.stat .num {
  font-family: var(--font-num);
  font-size: clamp(40px, 4.6vw, 58px);
  font-weight: 700;
  line-height: 1.1;
  color: #ffa14d;
}
.stat .num sup { font-size: .5em; margin-left: 2px; }
.stat .label { margin-top: 6px; font-size: 15px; color: rgba(255, 255, 255, .8); letter-spacing: .08em; }

/* ---------- 产品卡片 ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.product-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  transition: transform .3s ease, box-shadow .3s ease;
  display: flex;
  flex-direction: column;
}
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.product-card .pic { position: relative; aspect-ratio: 4 / 3; overflow: hidden; }
.product-card .pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.product-card:hover .pic img { transform: scale(1.06); }
.product-card .pic .no {
  position: absolute;
  top: 14px; left: 14px;
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .1em;
  background: var(--orange);
  color: var(--white);
  padding: 4px 12px;
  border-radius: 4px;
}
.product-card .body { padding: 24px 26px 28px; flex: 1; display: flex; flex-direction: column; }
.product-card h3 { font-size: 20px; font-weight: 700; color: var(--blue-900); }
.product-card .en-name {
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .22em;
  color: var(--gray-500);
  text-transform: uppercase;
  margin: 4px 0 12px;
}
.product-card .desc { font-size: 14.5px; color: var(--gray-700); flex: 1; }
.product-card .specs {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--gray-200);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.product-card .specs span {
  font-size: 12.5px;
  color: var(--blue-700);
  background: var(--blue-100);
  padding: 3px 10px;
  border-radius: 99px;
}

/* 产品详情页（参数表） */
.product-detail {
  display: grid;
  grid-template-columns: 5fr 6fr;
  gap: 48px;
  align-items: start;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}
.product-detail + .product-detail { margin-top: 40px; }
.product-detail:nth-child(even) { direction: rtl; }
.product-detail:nth-child(even) > * { direction: ltr; }
.product-detail .pic { border-radius: var(--radius); overflow: hidden; aspect-ratio: 4 / 3; }
.product-detail .pic img { width: 100%; height: 100%; object-fit: cover; }
.product-detail h3 { font-size: 26px; color: var(--blue-900); font-weight: 700; }
.product-detail .en-name { font-family: var(--font-num); font-size: 13px; letter-spacing: .25em; color: var(--orange); text-transform: uppercase; font-weight: 600; margin-bottom: 8px; display: block; }
.product-detail .desc { margin: 14px 0 20px; color: var(--gray-700); }
.spec-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.spec-table th, .spec-table td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--gray-200); }
.spec-table th { width: 34%; color: var(--gray-500); font-weight: 500; background: var(--gray-100); }
.spec-table td { color: var(--ink); }
.product-detail .apps { margin-top: 18px; font-size: 14px; color: var(--gray-700); }
.product-detail .apps b { color: var(--blue-700); }

/* ---------- 关于摘要 / 工厂 ---------- */
.about-strip { display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: center; }
.about-strip .pic { position: relative; }
.about-strip .pic img { border-radius: var(--radius); box-shadow: var(--shadow-md); aspect-ratio: 4/3; object-fit: cover; width: 100%; }
.about-strip .pic .badge {
  position: absolute;
  right: -22px; bottom: -22px;
  background: var(--orange);
  color: var(--white);
  padding: 20px 26px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  text-align: center;
}
.about-strip .pic .badge .num { font-family: var(--font-num); font-size: 42px; font-weight: 700; line-height: 1; }
.about-strip .pic .badge .txt { font-size: 13px; letter-spacing: .15em; margin-top: 6px; }
.about-strip .text h2 { font-size: clamp(26px, 3vw, 36px); color: var(--blue-900); font-weight: 700; margin: 10px 0 18px; }
.about-strip .text .en { font-family: var(--font-num); font-size: 14px; letter-spacing: .3em; color: var(--orange); text-transform: uppercase; font-weight: 600; }
.about-strip .text p { color: var(--gray-700); margin-bottom: 14px; }
.about-points { margin: 22px 0 30px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; }
.about-points li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; color: var(--ink); }
.about-points svg { width: 18px; height: 18px; flex: none; margin-top: 4px; fill: var(--orange); }

/* ---------- 优势 ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.adv-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 34px 26px;
  text-align: center;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.adv-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--blue-600); }
.adv-card .icon {
  width: 64px; height: 64px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--blue-100);
  display: flex; align-items: center; justify-content: center;
}
.adv-card .icon svg { width: 30px; height: 30px; fill: var(--blue-700); }
.adv-card h3 { font-size: 18px; color: var(--blue-900); margin-bottom: 10px; }
.adv-card p { font-size: 14px; color: var(--gray-500); }

/* ---------- 案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.case-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  box-shadow: var(--shadow-sm);
}
.case-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s ease; }
.case-card:hover img { transform: scale(1.07); }
.case-card .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(12, 36, 64, .92) 8%, rgba(12, 36, 64, .25) 55%, transparent);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px 30px;
  color: var(--white);
}
.case-card .tag {
  align-self: flex-start;
  font-size: 12.5px;
  letter-spacing: .15em;
  background: var(--orange);
  padding: 3px 12px;
  border-radius: 4px;
  margin-bottom: 12px;
}
.case-card h3 { font-size: 22px; font-weight: 700; }
.case-card p { font-size: 14px; color: rgba(255, 255, 255, .82); margin-top: 8px; max-width: 90%; }
.case-card .meta {
  margin-top: 12px;
  font-family: var(--font-num);
  font-size: 14px;
  letter-spacing: .12em;
  color: #ffa14d;
  font-weight: 600;
}

/* ---------- 新闻 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.news-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .3s ease, box-shadow .3s ease;
  display: flex; flex-direction: column;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.news-card .pic { aspect-ratio: 16 / 9; overflow: hidden; }
.news-card .pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.news-card:hover .pic img { transform: scale(1.05); }
.news-card .body { padding: 22px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.news-card .date { font-family: var(--font-num); font-size: 13px; font-weight: 600; letter-spacing: .15em; color: var(--orange); }
.news-card h3 { font-size: 18px; color: var(--blue-900); margin: 8px 0 10px; line-height: 1.5; }
.news-card p { font-size: 14px; color: var(--gray-500); flex: 1; }
.news-card .more { margin-top: 16px; font-size: 13.5px; font-weight: 600; color: var(--blue-700); letter-spacing: .1em; }

/* 新闻列表页 */
.news-list { display: grid; gap: 22px; }
.news-row {
  display: grid;
  grid-template-columns: 150px 1fr auto;
  gap: 26px;
  align-items: center;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 24px 30px;
  transition: box-shadow .25s ease, transform .25s ease;
}
.news-row:hover { box-shadow: var(--shadow-md); transform: translateX(6px); }
.news-row .date { text-align: center; border-right: 1px solid var(--gray-200); padding-right: 22px; }
.news-row .date .d { font-family: var(--font-num); font-size: 38px; font-weight: 700; color: var(--blue-700); line-height: 1; }
.news-row .date .ym { font-size: 13px; color: var(--gray-500); margin-top: 4px; }
.news-row h3 { font-size: 19px; color: var(--blue-900); margin-bottom: 6px; }
.news-row p { font-size: 14px; color: var(--gray-500); }
.news-row .cat {
  flex: none;
  font-size: 12.5px;
  color: var(--blue-700);
  background: var(--blue-100);
  border-radius: 99px;
  padding: 5px 14px;
  letter-spacing: .1em;
}

/* ---------- 页头横幅（内页） ---------- */
.page-banner {
  position: relative;
  padding: 96px 0 84px;
  color: var(--white);
  background: var(--blue-900);
  overflow: hidden;
}
.page-banner img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .35; }
.page-banner::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(12, 36, 64, .9), rgba(12, 36, 64, .5)); }
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1 { font-size: clamp(32px, 4vw, 46px); font-weight: 700; letter-spacing: .05em; }
.page-banner .en { font-family: var(--font-num); font-size: 15px; letter-spacing: .35em; text-transform: uppercase; color: #ffa14d; font-weight: 600; display: block; margin-bottom: 10px; }
.breadcrumb { margin-top: 14px; font-size: 14px; color: rgba(255, 255, 255, .75); }
.breadcrumb a:hover { color: #ffa14d; }

/* ---------- 发展历程 ---------- */
.timeline { position: relative; max-width: 860px; margin-inline: auto; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px; background: var(--gray-200); }
.timeline li { position: relative; padding: 0 0 40px 30px; }
.timeline li::before {
  content: "";
  position: absolute;
  left: -32px; top: 8px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 5px rgba(232, 113, 10, .18);
}
.timeline .year { font-family: var(--font-num); font-size: 26px; font-weight: 700; color: var(--blue-700); }
.timeline h3 { font-size: 18px; color: var(--blue-900); margin: 4px 0 8px; }
.timeline p { font-size: 14.5px; color: var(--gray-700); max-width: 640px; }

/* ---------- 资质荣誉 ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.cert-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 30px 24px;
  text-align: center;
  transition: transform .3s ease, box-shadow .3s ease;
}
.cert-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.cert-card .icon { width: 58px; height: 58px; margin: 0 auto 16px; border-radius: 50%; background: var(--blue-100); display: flex; align-items: center; justify-content: center; }
.cert-card .icon svg { width: 28px; height: 28px; fill: var(--orange); }
.cert-card h3 { font-size: 16.5px; color: var(--blue-900); }
.cert-card p { font-size: 13px; color: var(--gray-500); margin-top: 6px; }

/* ---------- 联系页 ---------- */
.contact-wrap { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: start; }
.contact-list { display: grid; gap: 18px; }
.contact-item {
  display: flex;
  gap: 18px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 24px 26px;
  transition: box-shadow .25s ease;
}
.contact-item:hover { box-shadow: var(--shadow-md); }
.contact-item .icon { flex: none; width: 52px; height: 52px; border-radius: 50%; background: var(--blue-100); display: flex; align-items: center; justify-content: center; }
.contact-item .icon svg { width: 24px; height: 24px; fill: var(--blue-700); }
.contact-item h3 { font-size: 16px; color: var(--gray-500); font-weight: 500; }
.contact-item .val { font-size: 19px; font-weight: 600; color: var(--blue-900); margin-top: 2px; }
.contact-item .val.big { font-family: var(--font-num); font-size: 26px; letter-spacing: .05em; }
.contact-item p.note { font-size: 13px; color: var(--gray-500); margin-top: 4px; }
.contact-side .pic { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); }
.contact-side .route { margin-top: 26px; background: var(--blue-100); border-radius: var(--radius); padding: 24px 26px; }
.contact-side .route h3 { color: var(--blue-900); font-size: 17px; margin-bottom: 10px; }
.contact-side .route p { font-size: 14px; color: var(--gray-700); }

/* ---------- 页脚 ---------- */
.footer { background: var(--blue-900); color: rgba(255, 255, 255, .78); padding: 64px 0 0; }
.footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 48px; padding-bottom: 48px; }
.footer .f-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.footer .f-logo svg { width: 40px; height: 40px; }
.footer .f-logo .name { font-size: 19px; font-weight: 700; color: var(--white); }
.footer .f-logo .name small { display: block; font-family: var(--font-num); font-size: 10.5px; letter-spacing: .28em; color: rgba(255, 255, 255, .55); font-weight: 600; }
.footer p.intro { font-size: 14px; line-height: 1.9; }
.footer h4 { color: var(--white); font-size: 17px; margin-bottom: 18px; letter-spacing: .08em; }
.footer .links li { margin-bottom: 10px; font-size: 14.5px; }
.footer .links a:hover { color: #ffa14d; }
.footer .contact li { display: flex; gap: 10px; margin-bottom: 12px; font-size: 14.5px; align-items: flex-start; }
.footer .contact svg { width: 16px; height: 16px; fill: var(--orange); flex: none; margin-top: 5px; }
.footer .hotline { margin-top: 16px; }
.footer .hotline .num { font-family: var(--font-num); font-size: 30px; font-weight: 700; color: #ffa14d; letter-spacing: .05em; }
.footer .hotline small { font-size: 12.5px; color: rgba(255, 255, 255, .55); }
.footer .bottom {
  border-top: 1px solid rgba(255, 255, 255, .12);
  padding: 20px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, .5);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .product-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .adv-grid, .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .stats .container { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3) { border-left: 0; }
  .stat { border-top: 1px solid rgba(255, 255, 255, .12); }
  .stat:nth-child(-n+2) { border-top: 0; }
  .about-strip { grid-template-columns: 1fr; gap: 48px; }
  .about-strip .pic .badge { right: 12px; bottom: -18px; }
  .product-detail { grid-template-columns: 1fr; }
  .product-detail:nth-child(even) { direction: ltr; }
  .contact-wrap { grid-template-columns: 1fr; }
  .footer .cols { grid-template-columns: 1fr 1fr; }
  .header-cta { display: none; }
}
@media (max-width: 720px) {
  .section { padding: 60px 0; }
  .nav {
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 12px 4%;
    gap: 2px;
    box-shadow: var(--shadow-md);
    display: none;
  }
  .nav.open { display: flex; }
  .nav a { padding: 13px 14px; }
  .nav-toggle { display: flex; }
  .topbar .right { display: none; }
  .hero { min-height: 520px; }
  .product-grid, .news-grid, .case-grid, .adv-grid, .cert-grid { grid-template-columns: 1fr; }
  .news-row { grid-template-columns: 1fr; gap: 12px; }
  .news-row .date { border-right: 0; border-bottom: 1px solid var(--gray-200); padding: 0 0 10px; text-align: left; display: flex; align-items: baseline; gap: 10px; }
  .footer .cols { grid-template-columns: 1fr; gap: 34px; }
  .stats .container { grid-template-columns: 1fr 1fr; }
}