/* ============================================================
   皖工机电设备有限公司 · 全站样式
   工业机电风格：深海军蓝 + 安全橙 + 钢灰，直角工程感
   ============================================================ */

/* ---------- 字体本地化 ---------- */
@font-face {
  font-family: 'Noto Sans SC';
  src: url('../assets/fonts/noto-sc-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Noto Sans SC';
  src: url('../assets/fonts/noto-sc-500.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Noto Sans SC';
  src: url('../assets/fonts/noto-sc-700.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Rajdhani';
  src: url('../assets/fonts/rajdhani-500.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Rajdhani';
  src: url('../assets/fonts/rajdhani-600.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Rajdhani';
  src: url('../assets/fonts/rajdhani-700.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ---------- 设计令牌 ---------- */
:root {
  --navy-950: #071726;
  --navy-900: #0B2034;
  --navy-800: #102B45;
  --navy-700: #163A5C;
  --navy-600: #1D4A78;
  --steel-500: #46708F;
  --steel-300: #8FB0C7;
  --steel-100: #C9D8E4;
  --orange: #E85D04;
  --orange-hover: #C94F03;
  --orange-bright: #FF7A1A;
  --paper: #F3F6F9;
  --card: #FFFFFF;
  --ink: #152330;
  --ink-2: #54677A;
  --line: #DCE4EC;
  --line-dark: rgba(255, 255, 255, .14);
  --shadow-sm: 0 1px 2px rgba(11, 32, 52, .06), 0 4px 14px rgba(11, 32, 52, .06);
  --shadow-md: 0 10px 30px rgba(11, 32, 52, .12);
  --font-cn: 'Noto Sans SC', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-num: 'Rajdhani', 'Noto Sans SC', sans-serif;
  --container: 1200px;
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-cn);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--card);
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
:focus-visible { outline: 2px solid var(--orange-bright); outline-offset: 2px; }
::selection { background: var(--orange); color: #fff; }

.num { font-family: var(--font-num); font-weight: 600; letter-spacing: .02em; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 48px;
  padding: 0 28px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .04em;
  border-radius: 2px;
  transition: background .2s, color .2s, border-color .2s, transform .2s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--orange); color: #fff; }
.btn-primary:hover { background: var(--orange-bright); }
.btn-ghost-light { border: 1px solid rgba(255, 255, 255, .6); color: #fff; background: rgba(7, 23, 38, .25); }
.btn-ghost-light:hover { background: rgba(255, 255, 255, .14); border-color: #fff; }
.btn-ghost-dark { border: 1px solid var(--navy-700); color: var(--navy-800); }
.btn-ghost-dark:hover { background: var(--navy-800); color: #fff; }
.btn-sm { height: 38px; padding: 0 18px; font-size: 14px; }

/* ---------- 顶栏与页头 ---------- */
.topbar {
  background: var(--navy-950);
  color: var(--steel-300);
  font-size: 13px;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 36px;
  gap: 16px;
}
.topbar-left { display: flex; align-items: center; gap: 22px; }
.topbar-left span { display: inline-flex; align-items: center; gap: 6px; }
.topbar-right { display: flex; align-items: center; gap: 22px; }
.topbar a:hover { color: #fff; }
.topbar svg { width: 14px; height: 14px; fill: none; stroke: var(--orange-bright); stroke-width: 1.8; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 23, 38, .55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  transition: background .3s, box-shadow .3s, border-color .3s;
}
.site-header.scrolled {
  background: rgba(255, 255, 255, .97);
  border-bottom-color: var(--line);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand img.logo-main { height: 42px; width: auto; }
.brand .logo-light { display: block; }
.brand .logo-dark { display: none; }
.site-header.scrolled .logo-light,
body.nav-open .site-header .logo-light { display: none; }
.site-header.scrolled .logo-dark,
body.nav-open .site-header .logo-dark { display: block; }

.main-nav { display: flex; align-items: center; gap: 6px; }
.nav-link {
  position: relative;
  display: block;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255, 255, 255, .92);
  transition: color .2s;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 16px; right: 16px; bottom: 4px;
  height: 2px;
  background: var(--orange-bright);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s;
}
.nav-link:hover, .nav-link.active { color: #fff; }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
.site-header.scrolled .nav-link { color: var(--ink); }
.site-header.scrolled .nav-link:hover,
.site-header.scrolled .nav-link.active { color: var(--navy-800); }

.header-cta { flex-shrink: 0; }

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 0 8px;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: #fff;
  transition: transform .25s, opacity .25s;
}
.site-header.scrolled .nav-toggle span,
body.nav-open .site-header .nav-toggle span { background: var(--navy-800); }
body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 通用区块 ---------- */
.section { padding: 92px 0; }
.section-paper { background: var(--paper); }
.section-navy {
  background: var(--navy-900);
  color: var(--steel-300);
}
.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head.center .lead { margin-left: auto; margin-right: auto; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .22em;
  color: var(--orange);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--orange); }
.section-head.center .eyebrow::after { content: ""; width: 26px; height: 2px; background: var(--orange); }
.section-title {
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--navy-900);
  margin-bottom: 14px;
}
.section-navy .section-title { color: #fff; }
.lead { color: var(--ink-2); font-size: 15.5px; max-width: 640px; }
.section-navy .lead { color: var(--steel-300); }
.head-link { margin-top: 18px; }
.head-link a { color: var(--navy-600); font-weight: 500; font-size: 14.5px; border-bottom: 1px solid var(--steel-100); padding-bottom: 2px; }
.head-link a:hover { color: var(--orange); border-color: var(--orange); }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  margin-top: -112px; /* 顶栏+页头叠到背景图上 */
  padding-top: 170px;
  padding-bottom: 110px;
  overflow: hidden;
  color: #fff;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../assets/images/hero-factory.jpg');
  background-size: cover;
  background-position: center 62%;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(7, 23, 38, .92) 0%, rgba(11, 32, 52, .72) 42%, rgba(11, 32, 52, .28) 100%),
    linear-gradient(180deg, rgba(7, 23, 38, .55) 0%, rgba(7, 23, 38, 0) 26%, rgba(7, 23, 38, .35) 100%);
}
.hero-grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(90deg, #000 0%, transparent 70%);
  mask-image: linear-gradient(90deg, #000 0%, transparent 70%);
}
.hero-content { position: relative; z-index: 2; max-width: 640px; }
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--orange-bright);
  margin-bottom: 22px;
}
.hero-eyebrow::before { content: ""; width: 34px; height: 2px; background: var(--orange-bright); }
.hero h1 {
  font-size: clamp(2rem, 4.6vw, 3.3rem);
  font-weight: 700;
  line-height: 1.22;
  margin-bottom: 20px;
  letter-spacing: .01em;
}
.hero h1 em { font-style: normal; color: var(--orange-bright); }
.hero-desc {
  font-size: 16.5px;
  color: var(--steel-100);
  max-width: 520px;
  margin-bottom: 34px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 数据带 ---------- */
.stats-band { background: var(--navy-800); border-bottom: 1px solid rgba(255, 255, 255, .07); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  padding: 46px 0;
}
.stat-item { position: relative; padding-left: 18px; }
.stat-item::before { content: ""; position: absolute; left: 0; top: 8px; bottom: 8px; width: 3px; background: var(--orange); }
.stat-num {
  font-family: var(--font-num);
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  color: #fff;
}
.stat-num .unit { font-size: 20px; color: var(--orange-bright); margin-left: 3px; }
.stat-label { margin-top: 8px; font-size: 13.5px; color: var(--steel-300); letter-spacing: .08em; }

/* ---------- 简介条 ---------- */
.intro-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 64px;
  align-items: center;
}
.intro-media { position: relative; }
.intro-media img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: var(--shadow-md);
}
.intro-media::after {
  content: "";
  position: absolute;
  right: -16px;
  bottom: -16px;
  width: 62%;
  height: 62%;
  border: 2px solid var(--orange);
  z-index: -1;
}
.intro-badge {
  position: absolute;
  left: -18px;
  bottom: 28px;
  background: var(--orange);
  color: #fff;
  padding: 14px 20px;
  border-radius: 2px;
  box-shadow: var(--shadow-md);
}
.intro-badge .num { font-size: 30px; font-weight: 700; display: block; line-height: 1.1; }
.intro-badge small { font-size: 12.5px; letter-spacing: .12em; }
.intro-text h3 { font-size: 22px; color: var(--navy-900); margin-bottom: 16px; line-height: 1.45; }
.intro-text p { color: var(--ink-2); margin-bottom: 14px; }
.intro-points { margin: 20px 0 28px; display: grid; gap: 10px; }
.intro-points li { display: flex; gap: 10px; align-items: flex-start; color: var(--ink); font-size: 15px; }
.intro-points svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 4px; fill: none; stroke: var(--orange); stroke-width: 2; }

/* ---------- 产品卡片 ---------- */
.prod-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.prod-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
  transition: transform .25s, box-shadow .25s;
}
.prod-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.prod-card .thumb { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--paper); }
.prod-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s; }
.prod-card:hover .thumb img { transform: scale(1.05); }
.prod-card .cat-tag {
  position: absolute;
  left: 12px; top: 12px;
  background: rgba(7, 23, 38, .72);
  color: #fff;
  font-size: 12px;
  letter-spacing: .1em;
  padding: 4px 10px;
  border-radius: 2px;
}
.prod-card .body { padding: 18px 20px 22px; }
.prod-card .body h3 { font-size: 16.5px; color: var(--navy-900); margin-bottom: 8px; font-weight: 600; }
.prod-card .body p { font-size: 13.5px; color: var(--ink-2); line-height: 1.65; margin-bottom: 12px; }
.prod-card .spec { font-family: var(--font-num); font-size: 13px; color: var(--orange); letter-spacing: .04em; }

/* ---------- 应用领域 ---------- */
.app-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.app-card {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 30px 26px;
  border-radius: 2px;
  position: relative;
  transition: border-color .25s, box-shadow .25s;
}
.app-card:hover { border-color: var(--steel-500); box-shadow: var(--shadow-sm); }
.app-icon {
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  background: var(--navy-800);
  color: var(--orange-bright);
  border-radius: 2px;
  margin-bottom: 18px;
}
.app-icon svg { width: 26px; height: 26px; fill: none; stroke: currentColor; stroke-width: 1.7; }
.app-card h3 { font-size: 17px; color: var(--navy-900); margin-bottom: 8px; }
.app-card p { font-size: 13.5px; color: var(--ink-2); }

/* ---------- 优势（编号列表） ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.adv-item {
  border: 1px solid var(--line);
  background: var(--card);
  padding: 32px 28px;
  border-radius: 2px;
  position: relative;
}
.adv-num {
  font-family: var(--font-num);
  font-size: 44px;
  font-weight: 700;
  color: var(--steel-100);
  line-height: 1;
  margin-bottom: 16px;
}
.adv-item h3 { font-size: 17px; color: var(--navy-900); margin-bottom: 10px; }
.adv-item p { font-size: 14px; color: var(--ink-2); }

/* ---------- 数字区（深色） ---------- */
.num-band { background: var(--navy-900); color: #fff; }
.num-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.num-cell { text-align: center; padding: 8px 0; }
.num-cell .num { font-size: 46px; font-weight: 700; color: var(--orange-bright); line-height: 1.1; }
.num-cell .lbl { margin-top: 8px; font-size: 14px; color: var(--steel-300); letter-spacing: .06em; }
.num-cell + .num-cell { border-left: 1px solid var(--line-dark); }

/* ---------- 新闻卡片 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .25s, box-shadow .25s;
}
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.news-card .thumb { aspect-ratio: 3 / 2; overflow: hidden; background: var(--paper); }
.news-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s; }
.news-card:hover .thumb img { transform: scale(1.05); }
.news-card .body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.news-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.news-meta .tag {
  font-size: 12px;
  color: var(--orange);
  border: 1px solid rgba(232, 93, 4, .45);
  padding: 2px 9px;
  border-radius: 2px;
  letter-spacing: .08em;
}
.news-meta time { font-family: var(--font-num); font-size: 13px; color: var(--ink-2); letter-spacing: .04em; }
.news-card .body h3 { font-size: 16.5px; line-height: 1.5; color: var(--navy-900); margin-bottom: 10px; }
.news-card .body p { font-size: 13.5px; color: var(--ink-2); line-height: 1.7; }

/* ---------- CTA 条 ---------- */
.cta-band { background: var(--navy-800); position: relative; overflow: hidden; }
.cta-band::before {
  content: "";
  position: absolute;
  right: -120px; top: -120px;
  width: 420px; height: 420px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .08);
  box-shadow: 0 0 0 60px rgba(255, 255, 255, .03), 0 0 0 120px rgba(255, 255, 255, .025);
}
.cta-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 64px 0;
  flex-wrap: wrap;
}
.cta-inner h2 { color: #fff; font-size: clamp(1.4rem, 2.6vw, 2rem); margin-bottom: 10px; }
.cta-inner p { color: var(--steel-300); font-size: 15px; max-width: 640px; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--navy-950); color: var(--steel-300); }
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding: 72px 0 56px;
}
.footer-brand img { height: 46px; margin-bottom: 18px; }
.footer-brand p { font-size: 14px; line-height: 1.9; max-width: 300px; }
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .1em;
  margin-bottom: 22px;
  position: relative;
  padding-bottom: 12px;
}
.footer-col h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 26px; height: 2px; background: var(--orange); }
.footer-col ul { display: grid; gap: 12px; }
.footer-col a { font-size: 14px; transition: color .2s, padding-left .2s; }
.footer-col a:hover { color: var(--orange-bright); padding-left: 4px; }
.footer-contact li { display: flex; gap: 10px; font-size: 14px; line-height: 1.8; margin-bottom: 12px; }
.footer-contact svg { width: 16px; height: 16px; flex-shrink: 0; margin-top: 5px; fill: none; stroke: var(--orange-bright); stroke-width: 1.8; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 22px 0;
  font-size: 13px;
}
.footer-bottom .fb-flex {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---------- 内页 Hero ---------- */
.page-hero {
  position: relative;
  background: var(--navy-900);
  color: #fff;
  padding: 128px 0 64px;
  margin-top: -112px;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(100deg, #000 30%, transparent 90%);
  mask-image: linear-gradient(100deg, #000 30%, transparent 90%);
}
.page-hero::after {
  content: "";
  position: absolute;
  right: -140px; top: -140px;
  width: 480px; height: 480px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .07);
  box-shadow: 0 0 0 70px rgba(255, 255, 255, .03), 0 0 0 140px rgba(255, 255, 255, .02);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(1.9rem, 4vw, 2.7rem); margin-bottom: 14px; }
.page-hero p { color: var(--steel-300); max-width: 600px; font-size: 15.5px; }
.breadcrumb { margin-top: 22px; display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--steel-300); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb svg { width: 14px; height: 14px; fill: none; stroke: var(--orange-bright); stroke-width: 2; }

/* ---------- 时间轴（三列网格，像素级对齐） ---------- */
.timeline {
  display: grid;
  grid-template-columns: 148px 44px 1fr;
  row-gap: 0;
  max-width: 920px;
  margin: 0 auto;
}
.tl-item { display: contents; }
.tl-year {
  text-align: right;
  font-family: var(--font-num);
  font-size: 26px;
  font-weight: 700;
  color: var(--navy-600);
  padding: 22px 0;
  line-height: 1.3;
}
.tl-axis { position: relative; }
.tl-axis::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--line);
  transform: translateX(-50%);
}
.tl-dot {
  position: relative;
  z-index: 2;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--orange);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--orange);
  justify-self: center;
  margin-top: 27px;
}
.tl-body { padding: 20px 0 20px 28px; }
.tl-body h3 { font-size: 17px; color: var(--navy-900); margin-bottom: 6px; }
.tl-body p { font-size: 14px; color: var(--ink-2); max-width: 600px; }
.tl-item:last-child .tl-axis::before { bottom: auto; height: 27px; }
.tl-item:first-child .tl-axis::before { top: 27px; }

/* ---------- 资质 ---------- */
.cred-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cred-card {
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  padding: 26px 24px;
  border-radius: 2px;
}
.cred-card .ic {
  width: 52px; height: 52px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--orange);
}
.cred-card .ic svg { width: 26px; height: 26px; fill: none; stroke: currentColor; stroke-width: 1.6; }
.cred-card h3 { font-size: 15.5px; color: var(--navy-900); margin-bottom: 4px; }
.cred-card p { font-size: 13px; color: var(--ink-2); }

/* ---------- 产品筛选 ---------- */
.filter-bar { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 44px; }
.filter-btn {
  height: 40px;
  padding: 0 22px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--navy-800);
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 2px;
  transition: all .2s;
}
.filter-btn:hover { border-color: var(--navy-700); }
.filter-btn.active { background: var(--navy-800); color: #fff; border-color: var(--navy-800); }
.prod-grid { margin-top: 0; }
.prod-card.hide { display: none; }

/* ---------- 选型流程 ---------- */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
.step-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 30px 26px 26px;
}
.step-card::before {
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--font-num);
  font-size: 30px;
  font-weight: 700;
  color: var(--steel-100);
  display: block;
  margin-bottom: 14px;
  line-height: 1;
}
.step-card h3 { font-size: 16px; color: var(--navy-900); margin-bottom: 8px; }
.step-card p { font-size: 13.5px; color: var(--ink-2); }
.step-arrow {
  position: absolute;
  right: -15px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px; height: 26px;
  background: var(--orange);
  color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  z-index: 2;
}
.step-arrow svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 2.4; }
.step-card:last-child .step-arrow { display: none; }

/* ---------- 新闻列表页 ---------- */
.news-list { display: grid; gap: 24px; }
.news-row {
  display: grid;
  grid-template-columns: 340px 1fr;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
  transition: box-shadow .25s;
}
.news-row:hover { box-shadow: var(--shadow-md); }
.news-row .thumb { aspect-ratio: 3 / 2; overflow: hidden; }
.news-row .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s; }
.news-row:hover .thumb img { transform: scale(1.04); }
.news-row .body { padding: 26px 30px; display: flex; flex-direction: column; justify-content: center; }
.news-row .body h3 { font-size: 19px; color: var(--navy-900); line-height: 1.5; margin-bottom: 10px; }
.news-row .body p { font-size: 14px; color: var(--ink-2); margin-bottom: 14px; }
.news-row .meta { font-family: var(--font-num); font-size: 13px; color: var(--ink-2); display: flex; gap: 16px; align-items: center; }
.news-row .meta .tag { font-family: var(--font-cn); }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.contact-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 30px 26px;
  text-align: center;
  transition: border-color .25s, box-shadow .25s;
}
.contact-card:hover { border-color: var(--steel-500); box-shadow: var(--shadow-sm); }
.contact-card .ic {
  width: 56px; height: 56px;
  margin: 0 auto 18px;
  display: flex; align-items: center; justify-content: center;
  background: var(--navy-800);
  color: var(--orange-bright);
  border-radius: 2px;
}
.contact-card .ic svg { width: 26px; height: 26px; fill: none; stroke: currentColor; stroke-width: 1.7; }
.contact-card h3 { font-size: 15.5px; color: var(--navy-900); margin-bottom: 10px; }
.contact-card p { font-size: 14px; color: var(--ink-2); line-height: 1.8; }
.contact-card .big { font-family: var(--font-num); font-size: 21px; font-weight: 700; color: var(--navy-800); letter-spacing: .03em; }

/* 位置示意图 */
.map-wrap {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 32px;
  align-items: stretch;
}
.map-svg {
  background: #EAF0F5;
  border: 1px solid var(--line);
  border-radius: 2px;
  min-height: 420px;
}
.map-svg svg { width: 100%; height: 100%; display: block; }
.map-side {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 30px;
}
.map-side h3 { font-size: 18px; color: var(--navy-900); margin-bottom: 20px; }
.route-item { display: flex; gap: 14px; padding: 16px 0; border-bottom: 1px dashed var(--line); }
.route-item:last-child { border-bottom: none; }
.route-item .ic {
  width: 40px; height: 40px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--paper);
  color: var(--orange);
  border-radius: 2px;
}
.route-item .ic svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.route-item h4 { font-size: 15px; color: var(--navy-900); margin-bottom: 4px; }
.route-item p { font-size: 13.5px; color: var(--ink-2); }

/* ---------- 回到顶部 ---------- */
.to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--navy-800);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity .25s, transform .25s, visibility .25s, background .2s;
  z-index: 90;
}
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--orange); }
.to-top svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2.2; }

/* ---------- 进场动画 ---------- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .prod-card, .news-card { transition: none; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .prod-grid, .app-grid, .num-grid, .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .adv-grid, .cred-grid, .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .intro-grid { grid-template-columns: 1fr; gap: 48px; }
  .map-wrap { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); row-gap: 28px; }
  .news-row { grid-template-columns: 260px 1fr; }
  .hero { min-height: 560px; }
}

@media (max-width: 760px) {
  .section { padding: 64px 0; }
  .topbar .container { height: auto; padding: 8px 24px; flex-wrap: wrap; }
  .topbar-right { display: none; }
  .nav-toggle { display: flex; }
  .header-cta { display: none; }
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    padding: 10px 20px 22px;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    display: none;
  }
  body.nav-open .main-nav { display: flex; }
  .nav-link { color: var(--ink) !important; padding: 13px 8px; border-bottom: 1px solid var(--paper); }
  .nav-link::after { display: none; }
  .nav-link.active { color: var(--orange) !important; }
  .hero { margin-top: -112px; padding-top: 150px; padding-bottom: 90px; min-height: 520px; }
  .hero-actions .btn { flex: 1; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .prod-grid, .app-grid, .adv-grid, .cred-grid, .steps-grid, .contact-grid, .news-grid, .num-grid { grid-template-columns: 1fr; }
  .num-cell + .num-cell { border-left: none; }
  .footer-top { grid-template-columns: 1fr; gap: 36px; padding: 56px 0 40px; }
  .timeline { grid-template-columns: 92px 36px 1fr; }
  .tl-year { font-size: 20px; }
  .tl-body { padding-left: 18px; }
  .news-row { grid-template-columns: 1fr; }
  .news-row .thumb { aspect-ratio: 16 / 9; }
  .map-svg { min-height: 300px; }
  .cta-inner { padding: 48px 0; }
  .page-hero { padding: 116px 0 52px; }
  .stat-num { font-size: 30px; }
  .stat-item { padding-left: 14px; }
}