:root {
  --primary: #0D47A1;
  --primary-dark: #08306b;
  --primary-soft: #1565c0;
  --accent: #42A5F5;
  --bg: #ffffff;
  --bg-light: #f4f8fc;
  --bg-dark: #0a1f3c;
  --text: #1f2933;
  --text-dim: #6b7785;
  --line: #e3ebf3;
  --radius: 12px;
  --maxw: 1280px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
.wal { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ============ Reveal animation ============ */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in-view { opacity: 1; transform: none; }

/* ============ Header ============ */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 18px rgba(13,71,161,.08);
  transition: all .3s;
}
.headbody { display: flex; align-items: center; justify-content: space-between; height: 86px; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo img { height: 72px; width: auto; }
.logo .name { font-size: 19px; font-weight: 800; color: var(--primary-dark); letter-spacing: .5px; }
.logo .name small { display: block; font-size: 11px; font-weight: 500; color: var(--text-dim); letter-spacing: 1px; }
.nav { flex: 1; display: flex; justify-content: center; min-width: 0; }
.nav ul { display: flex; gap: 4px; flex-wrap: wrap; justify-content: center; }
.nav a { display: block; padding: 10px 16px; font-size: 15px; color: var(--text); border-radius: 8px; transition: all .25s; white-space: nowrap; }
.nav a:hover, .nav a.active { color: #fff; background: var(--primary); }

/* 产品中心下拉菜单 */
.nav > ul > li.has-sub { position: relative; }
.nav .subnav-arrow { display: inline-block; margin-left: 4px; width: 0; height: 0; border-left: 4px solid transparent; border-right: 4px solid transparent; border-top: 5px solid currentColor; vertical-align: middle; transition: transform .25s; }
.nav > ul > li.has-sub:hover > a .subnav-arrow { transform: rotate(180deg); }
.nav .subnav {
  position: absolute; top: calc(100% + 4px); left: 50%; transform: translate(-50%, 8px);
  min-width: 180px; padding: 8px 0; margin: 0; list-style: none;
  background: #fff; border-radius: 10px;
  box-shadow: 0 8px 32px rgba(13,71,161,.15), 0 2px 8px rgba(0,0,0,.06);
  opacity: 0; visibility: hidden;
  transition: all .25s ease; z-index: 200;
}
.nav > ul > li.has-sub:hover > .subnav,
.nav > ul > li.has-sub:focus-within > .subnav {
  opacity: 1; visibility: visible; transform: translate(-50%, 0);
}
.nav .subnav::before {
  content: ""; position: absolute; top: -6px; left: 50%; transform: translateX(-50%);
  width: 12px; height: 12px; background: #fff;
  box-shadow: -2px -2px 4px rgba(13,71,161,.05);
  clip-path: polygon(0 100%, 50% 0, 100% 100%);
}
.nav .subnav li { display: block; }
.nav .subnav a {
  display: block; padding: 10px 20px; font-size: 14px; color: var(--text);
  border-radius: 0; background: transparent !important; color: var(--text) !important;
  white-space: nowrap; text-align: center;
  transition: all .2s;
}
.nav .subnav a:hover { color: var(--primary) !important; transform: translateX(2px); }
.nav > ul > li.has-sub:hover > a { color: #fff; background: var(--primary); }
.head-right { display: flex; align-items: center; gap: 14px; }
.lang-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px; border: 1px solid var(--line); border-radius: 30px;
  font-size: 13px; color: var(--text-dim); cursor: pointer; transition: all .25s;
}
.lang-btn:hover { border-color: var(--accent); color: var(--primary); }
.lang-btn i { color: var(--accent); }
.mobile-nav-btn { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.mobile-nav-btn i { width: 26px; height: 2px; background: var(--primary); border-radius: 2px; }

/* ============ Hero ============ */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  overflow: hidden; color: #fff;
  background: linear-gradient(125deg, #06182f 0%, #0D47A1 55%, #1565c0 100%);
}
.hero-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 0; transform: scale(1.5) translate(4%, 4%); transform-origin: center; }
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(125deg, rgba(6,24,47,.82) 0%, rgba(13,71,161,.68) 55%, rgba(21,101,192,.52) 100%);
}
.hero-content { position: relative; z-index: 2; width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 90px 20px 40px; }
.hero-text { max-width: 660px; }
.hero-eyebrow {
  display: inline-block; padding: 7px 16px; border: 1px solid rgba(255,255,255,.4);
  border-radius: 30px; font-size: 13px; letter-spacing: 1.5px; margin-bottom: 22px;
  animation: fadeUp .8s ease both;
}
.hero h1 { font-size: clamp(38px, 6vw, 62px); font-weight: 800; line-height: 1.12; margin-bottom: 18px; animation: fadeUp .8s .1s ease both; }
.hero h1 .hl { color: var(--accent); }
.hero h2 { font-size: clamp(18px, 3vw, 24px); font-weight: 400; opacity: .92; margin-bottom: 22px; animation: fadeUp .8s .2s ease both; }
.hero p { font-size: 17px; opacity: .85; margin-bottom: 38px; max-width: 540px; animation: fadeUp .8s .3s ease both; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; animation: fadeUp .8s .4s ease both; }
.btn-primary { background: var(--accent); color: #fff; padding: 14px 38px; border-radius: 6px; font-weight: 600; transition: all .3s; }
.btn-primary:hover { background: #1e88e5; transform: translateY(-2px); box-shadow: 0 10px 28px rgba(66,165,245,.4); }
.btn-outline { border: 2px solid rgba(255,255,255,.6); color: #fff; padding: 14px 38px; border-radius: 6px; font-weight: 600; transition: all .3s; }
.btn-outline:hover { background: rgba(255,255,255,.14); }
.hero-scroll { position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); z-index: 2; color: rgba(255,255,255,.7); font-size: 12px; letter-spacing: 2px; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(26px); } to { opacity: 1; transform: none; } }

/* ============ Section ============ */
.section { padding: 84px 0; }
.section.alt { background: var(--bg-light); }
.sec-title { text-align: center; margin-bottom: 52px; }
.sec-title h2 { font-size: 34px; font-weight: 800; color: var(--primary-dark); }
.sec-title p { color: var(--text-dim); margin-top: 10px; font-size: 16px; }
.sec-title .line { width: 54px; height: 4px; background: linear-gradient(90deg, var(--accent), var(--primary)); border-radius: 2px; margin: 14px auto 0; }

/* ============ Products ============ */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.prod-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .35s; }
.prod-card:hover { transform: translateY(-6px); box-shadow: 0 18px 42px rgba(13,71,161,.14); border-color: var(--accent); }
.prod-card .pic { aspect-ratio: 4/3; overflow: hidden; background: var(--bg-light); }
.prod-card .pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.prod-card:hover .pic img { transform: scale(1.06); }
.prod-card .info { padding: 22px; }
.prod-card .info h4 { font-size: 18px; color: var(--primary-dark); margin-bottom: 8px; }
.prod-card .info p { font-size: 14px; color: var(--text-dim); margin-bottom: 14px; min-height: 42px; }
.prod-card .link { color: var(--accent); font-weight: 600; font-size: 14px; }
.prod-card .link:hover { text-decoration: underline; }

/* ============ Advantages ============ */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.adv-item { text-align: center; padding: 38px 22px; border-radius: var(--radius); background: #fff; border: 1px solid var(--line); transition: all .3s; }
.adv-item:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: 0 12px 30px rgba(13,71,161,.08); }
.adv-item .ic { font-size: 40px; color: var(--primary); margin-bottom: 14px; }
.adv-item h4 { font-size: 18px; margin-bottom: 8px; color: var(--primary-dark); }
.adv-item p { font-size: 14px; color: var(--text-dim); }

/* ============ About ============ */
.about { display: grid; grid-template-columns: 1fr; gap: 28px; }
.about .pic { border-radius: var(--radius); overflow: hidden; box-shadow: 0 16px 40px rgba(13,71,161,.12); aspect-ratio: 16/7; }
.about .pic img { width: 100%; height: 100%; object-fit: cover; display: block; }
.about h2 { font-size: 30px; color: var(--primary-dark); margin-bottom: 14px; }
.about .sub { color: var(--accent); font-weight: 600; margin-bottom: 18px; letter-spacing: .5px; }
.about p { color: var(--text-dim); margin-bottom: 14px; }
.stats { display: flex; gap: 36px; margin-top: 26px; }
.stat .num { font-size: 32px; font-weight: 800; color: var(--primary); }
.stat .lbl { font-size: 13px; color: var(--text-dim); }

/* 首页关于板块：图左文右（覆盖 .about 单列） */
.about-home { grid-template-columns: 1fr 1fr; gap: 54px; align-items: center; }
.about-home .pic { aspect-ratio: auto; }

/* 首页四宫格特性 */
.feat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0; margin-top: 26px; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.feat-grid .feat:nth-child(2n) { border-left: 1px solid var(--line); }
.feat-grid .feat:nth-child(n+3) { border-top: 1px solid var(--line); }
.feat { display: flex; align-items: center; gap: 14px; padding: 22px 24px; }
.feat i { font-size: 26px; color: var(--primary); flex-shrink: 0; }
.feat .ftxt { font-size: 16px; font-weight: 600; color: var(--primary-dark); }
@media (max-width: 640px) {
  .about-home { grid-template-columns: 1fr; gap: 28px; }
  .feat-grid { grid-template-columns: 1fr; }
  .feat-grid .feat:nth-child(2n) { border-left: none; }
  .feat-grid .feat { border-top: 1px solid var(--line); }
  .feat-grid .feat:first-child { border-top: none; }
}

/* ============ News ============ */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-card { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .3s; background: #fff; }
.news-card:hover { transform: translateY(-4px); box-shadow: 0 14px 32px rgba(13,71,161,.1); }
.news-card .pic { aspect-ratio: 16/9; overflow: hidden; }
.news-card .pic img { width: 100%; height: 100%; object-fit: cover; }
.news-card .body { padding: 20px; }
.news-card .date { font-size: 13px; color: var(--accent); font-weight: 600; }
.news-card h4 { font-size: 17px; color: var(--primary-dark); margin: 8px 0; line-height: 1.4; }
.news-card p { font-size: 14px; color: var(--text-dim); }

/* ============ CTA ============ */
.cta { background: linear-gradient(120deg, var(--primary), var(--accent)); color: #fff; text-align: center; padding: 72px 20px; }
.cta h2 { font-size: 32px; margin-bottom: 14px; }
.cta p { opacity: .92; margin-bottom: 26px; max-width: 560px; margin-left: auto; margin-right: auto; }
.cta .btn-white { background: #fff; color: var(--primary); padding: 14px 44px; border-radius: 6px; font-weight: 700; display: inline-block; transition: all .3s; }
.cta .btn-white:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(0,0,0,.18); }

/* ============ Contact ============ */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 54px; }
.contact .info h3 { font-size: 24px; color: var(--primary-dark); margin-bottom: 18px; }
.contact .info .row { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; color: var(--text-dim); font-size: 15px; }
.contact .info .row i { color: var(--accent); width: 22px; text-align: center; }
.contact-list { list-style: none; margin-top: 18px; }
.contact-list li { display: flex; align-items: flex-start; gap: 16px; padding: 16px 0; border-bottom: 1px dashed var(--line); }
.contact-list li i { font-size: 20px; color: var(--accent); width: 30px; text-align: center; margin-top: 2px; }
.contact-list li strong { display: block; color: var(--primary-dark); font-size: 15px; margin-bottom: 3px; }
.contact-list li p { margin: 0; color: var(--text-dim); font-size: 14px; }
.form-box { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.form-box h4 { font-size: 18px; color: var(--primary-dark); margin-bottom: 18px; }
.form-box .row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-box .field { margin-bottom: 16px; }
.form-box .field label { display: block; font-size: 14px; color: var(--text); margin-bottom: 7px; }
.form-box .field input, .form-box .field textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 8px;
  font-size: 14px; font-family: inherit; background: var(--bg-light); box-sizing: border-box; resize: vertical;
}
.form-box .field input:focus, .form-box .field textarea:focus { outline: none; border-color: var(--accent); background: #fff; }
.btn-submit {
  background: var(--primary); color: #fff; border: none; padding: 13px 38px; border-radius: 8px;
  font-size: 15px; font-weight: 600; cursor: pointer; transition: all .3s; margin-top: 6px;
}
.btn-submit:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 8px 20px rgba(66,165,245,.3); }
.map-placeholder { display: flex; flex-direction: column; align-items: center; gap: 14px; }
.map-placeholder i { font-size: 40px; color: var(--primary); }
.map-placeholder span { font-size: 15px; color: var(--text-dim); }
.form input, .form textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 8px;
  margin-bottom: 14px; font-size: 14px; font-family: inherit; background: var(--bg-light);
}
.form input:focus, .form textarea:focus { outline: none; border-color: var(--accent); background: #fff; }
.form button { background: var(--primary); color: #fff; border: none; padding: 13px 36px; border-radius: 8px; font-weight: 600; cursor: pointer; transition: all .3s; }
.form button:hover { background: var(--primary-dark); }

/* ============ Footer ============ */
.footer { background: var(--bg-dark); color: rgba(255,255,255,.72); padding: 54px 0 22px; }
.footer .cols { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
.footer h4 { color: #fff; margin-bottom: 16px; font-size: 17px; }
.foot-logo { max-width: 210px; height: auto; margin: 0 0 16px 0; display: block; justify-self: start; }
.footer .about-txt { font-size: 14px; line-height: 1.8; max-width: 380px; }
.footer a { color: rgba(255,255,255,.72); display: block; margin-bottom: 9px; font-size: 14px; transition: color .2s; }
.footer a:hover { color: var(--accent); }
.footer .bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 32px; padding-top: 18px; text-align: center; font-size: 13px; color: rgba(255,255,255,.5); }
.links { background: #06162b; }
.links ul { max-width: var(--maxw); margin: 0 auto; padding: 13px 20px; display: flex; gap: 16px; flex-wrap: wrap; font-size: 13px; }
.links .lbl { color: rgba(255,255,255,.6); }
.links a { color: rgba(255,255,255,.55); }
.links a:hover { color: var(--accent); }

/* ============ Mobile Nav Panel ============ */
.mobile-panel { position: fixed; inset: 0; background: rgba(10,31,60,.96); z-index: 200; display: none; flex-direction: column; padding: 80px 30px; }
.mobile-panel.open { display: flex; }
.mobile-panel a { color: #fff; font-size: 20px; padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,.12); }
.mobile-panel .close { position: absolute; top: 26px; right: 26px; color: #fff; font-size: 28px; cursor: pointer; }

/* ============ Responsive ============ */
@media (max-width: 980px) {
  .prod-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .about, .contact { grid-template-columns: 1fr; gap: 32px; }
  .nav { display: none; }
  .lang-btn { display: none; }
  .mobile-nav-btn { display: flex; }
  .footer .cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .prod-grid, .news-grid, .adv-grid { grid-template-columns: 1fr; }
  .hero { min-height: 82vh; }
  .section { padding: 56px 0; }
  .stats { gap: 20px; }
  .footer .cols { grid-template-columns: 1fr; }
  .sec-title h2 { font-size: 27px; }
}

/* ============ 栏目页头 Banner ============ */
.banner { background: linear-gradient(120deg, #06182f 0%, #0D47A1 60%, #1565c0 100%); color: #fff; padding: 116px 20px 58px; text-align: center; }
.banner h1 { font-size: clamp(30px, 5vw, 46px); font-weight: 800; }
.banner p { opacity: .85; margin-top: 12px; font-size: 17px; }

/* ============ 发展历程 Timeline ============ */
.timeline { max-width: 820px; margin: 0 auto; position: relative; padding-left: 8px; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 6px; bottom: 6px; width: 2px; background: var(--line); }
.tl-item { position: relative; padding: 0 0 38px 34px; }
.tl-item::before { content: ""; position: absolute; left: 1px; top: 5px; width: 16px; height: 16px; border-radius: 50%; background: var(--accent); border: 3px solid #fff; box-shadow: 0 0 0 2px var(--accent); }
.tl-item .date { color: var(--accent); font-weight: 700; font-size: 15px; }
.tl-item h4 { font-size: 18px; color: var(--primary-dark); margin: 6px 0; }
.tl-item p { color: var(--text-dim); font-size: 14px; }

/* ============ 产品详述 ============ */
.prod-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; margin-bottom: 56px; }
.prod-detail:nth-child(even) .pd-pic { order: 2; }
.prod-detail .pd-pic img { border-radius: var(--radius); box-shadow: 0 14px 36px rgba(13,71,161,.1); width: 100%; }
.prod-detail h3 { font-size: 24px; color: var(--primary-dark); margin-bottom: 6px; }
.prod-detail .tag { color: var(--accent); font-weight: 600; margin-bottom: 14px; }
.prod-detail p { color: var(--text-dim); margin-bottom: 14px; font-size: 15px; }
.prod-detail ul { list-style: none; }
.prod-detail li { padding: 9px 0; border-bottom: 1px solid var(--line); color: var(--text); font-size: 14px; }
.prod-detail li b { color: var(--primary); }

/* ============ 价值观卡 ============ */
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
      .value-grid.four { grid-template-columns: repeat(4, 1fr); }
.value-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 24px; text-align: center; transition: all .3s; }
.value-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(13,71,161,.08); border-color: var(--accent); }
.value-card .ic { font-size: 34px; color: var(--primary); margin-bottom: 12px; }
.value-card h4 { color: var(--primary-dark); margin-bottom: 8px; font-size: 17px; }
.value-card p { color: var(--text-dim); font-size: 14px; }

/* ============ 地图占位 ============ */
.map-box { width: 100%; height: 320px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.map-box .real-map { width: 100%; height: 100%; }

/* ============ 新闻列表 ============ */
.news-list { max-width: 940px; margin: 0 auto; }
.news-row { display: grid; grid-template-columns: 280px 1fr; gap: 30px; padding: 26px 0; border-bottom: 1px solid var(--line); align-items: center; }
.news-row .pic img { border-radius: var(--radius); width: 100%; }
.news-row .date { color: var(--accent); font-weight: 600; font-size: 14px; }
.news-row h4 { font-size: 19px; color: var(--primary-dark); margin: 8px 0; }
.news-row p { color: var(--text-dim); font-size: 14px; }
.news-row .more { color: var(--accent); font-weight: 600; font-size: 14px; }

/* ============ 资质卡 ============ */
.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cert-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; text-align: center; transition: all .3s; }
.cert-card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: 0 12px 30px rgba(13,71,161,.08); }
.cert-card .ic { font-size: 36px; color: var(--primary); margin-bottom: 14px; }
.cert-card h4 { color: var(--primary-dark); margin-bottom: 8px; font-size: 17px; }
.cert-card p { color: var(--text-dim); font-size: 14px; }

@media (max-width: 760px) {
  .prod-detail, .news-row { grid-template-columns: 1fr; }
  .prod-detail:nth-child(even) .pd-pic { order: 0; }
  .value-grid, .value-grid.four, .cert-grid { grid-template-columns: 1fr; }
}

/* ============ 补充按钮与工具类 ============ */
.btn-ghost { display: inline-block; padding: 14px 38px; border-radius: 6px; font-weight: 600; color: var(--primary); border: 2px solid var(--primary); background: transparent; transition: all .3s; }
.btn-ghost:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-text { display: inline-block; color: var(--primary); font-weight: 600; font-size: 15px; transition: color .25s; }
.btn-text:hover { color: var(--accent); }
.btn-contact { display: inline-flex; align-items: center; padding: 10px 22px; border-radius: 30px; background: var(--primary); color: #fff; font-size: 14px; font-weight: 600; transition: all .3s; }
.btn-contact:hover { background: var(--primary-dark); transform: translateY(-1px); }
.center { text-align: center; }
.article-meta { color: var(--text-dim); font-size: 14px; margin-bottom: 18px; }
.article-meta span { display: inline-block; }
.search-bar input:focus { outline: none; border-color: var(--accent); }

/* ============ 首页轮播 ============ */
.hero-carousel { position: relative; width: 100%; height: 78vh; min-height: 520px; max-height: 760px; overflow: hidden; background: var(--bg-dark); }
.carousel-track { position: relative; width: 100%; height: 100%; }
.carousel-item { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .9s ease, visibility .9s; z-index: 1; }
.carousel-item.active { opacity: 1; visibility: visible; z-index: 2; }
.carousel-bg { position: absolute; inset: 0; background-size: cover; background-position: center; transform: scale(1.08); transition: transform 6.5s ease; }
.carousel-item.active .carousel-bg { transform: scale(1); }
.carousel-overlay { position: absolute; inset: 0; background: linear-gradient(120deg, rgba(6,24,47,.78) 0%, rgba(13,71,161,.55) 60%, rgba(21,101,192,.4) 100%); }
.carousel-content { position: relative; z-index: 3; height: 100%; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; color: #fff; padding-top: 74px; }
.carousel-tag { display: inline-block; padding: 8px 18px; border: 1px solid rgba(255,255,255,.35); border-radius: 30px; font-size: 14px; letter-spacing: 1px; margin-bottom: 22px; background: rgba(255,255,255,.08); backdrop-filter: blur(4px); }
.carousel-content h2 { font-size: clamp(32px, 5.2vw, 56px); font-weight: 800; line-height: 1.18; max-width: 760px; margin-bottom: 28px; text-shadow: 0 4px 20px rgba(0,0,0,.25); }
.carousel-content .btn-primary { box-shadow: 0 8px 24px rgba(0,0,0,.25); }
.carousel-arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 5; width: 48px; height: 48px; border-radius: 50%; border: 1px solid rgba(255,255,255,.3); background: rgba(255,255,255,.12); color: #fff; font-size: 18px; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all .25s; backdrop-filter: blur(4px); }
.carousel-arrow:hover { background: rgba(255,255,255,.28); border-color: rgba(255,255,255,.6); }
.carousel-prev { left: 24px; }
.carousel-next { right: 24px; }
.carousel-dots { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); z-index: 5; display: flex; gap: 10px; }
.carousel-dots button { width: 10px; height: 10px; border-radius: 50%; border: none; background: rgba(255,255,255,.35); cursor: pointer; transition: all .25s; }
.carousel-dots button.active { background: #fff; width: 28px; border-radius: 5px; }

@media (max-width: 760px) {
  .hero-carousel { height: 70vh; min-height: 460px; }
  .carousel-arrow { width: 40px; height: 40px; font-size: 15px; }
  .carousel-prev { left: 12px; }
  .carousel-next { right: 12px; }
  .carousel-content { align-items: center; text-align: center; }
  .carousel-content h2 { font-size: clamp(26px, 8vw, 38px); }
}

/* ============ 二级页：面包屑/当前位置 ============ */
.innerrtitle { background: var(--bg-light); border-bottom: 1px solid var(--line); padding: 13px 0; }
.navpost { font-size: 14px; color: var(--text-dim); }
.navpost a { color: var(--text-dim); }
.navpost a:hover { color: var(--primary); }
.navpost .inposition { margin-right: 4px; }

/* ============ 内容正文（文章/产品/单页） ============ */
.rich { font-size: 16px; line-height: 1.9; color: #2b3742; }
.rich p { margin-bottom: 18px; }
.rich img { max-width: 100%; border-radius: var(--radius); margin: 14px 0; }
.rich h2 { font-size: 22px; color: var(--primary-dark); margin: 26px 0 12px; line-height: 1.4; }
.rich h3 { font-size: 19px; color: var(--primary-dark); margin: 22px 0 10px; }
.rich ul, .rich ol { margin: 0 0 18px 22px; }
.rich li { margin-bottom: 8px; }

/* ============ 上一篇/下一篇 ============ */
.detpnt { border-top: 1px solid var(--line); margin-top: 34px; padding-top: 16px; }
.detpntline { font-size: 14px; color: var(--text-dim); padding: 6px 0; }
.detpntline a { color: var(--text); }
.detpntline a:hover { color: var(--primary); }
.clearfix::after { content: ""; display: block; clear: both; }

/* ============ 产品详情 ============ */
.pro-gallery { float: left; width: 46%; }
.pro-gallery .main-pic img { width: 100%; border-radius: var(--radius); box-shadow: 0 14px 36px rgba(13,71,161,.12); }
.pro-gallery .thumbs { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.pro-gallery .thumb { width: 72px; height: 72px; object-fit: cover; border-radius: 8px; cursor: pointer; border: 2px solid transparent; transition: border-color .2s; }
.pro-gallery .thumb:hover { border-color: var(--accent); }
.pro-info { float: right; width: 50%; }
.pro-info h1 { font-size: 26px; color: var(--primary-dark); margin-bottom: 12px; }
.pro-desc { color: var(--text-dim); font-size: 15px; line-height: 1.8; margin-bottom: 22px; }
.pro-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.pro-detail { clear: both; margin-top: 42px; }
.detail-title { font-size: 22px; color: var(--primary-dark); margin-bottom: 16px; padding-left: 12px; border-left: 4px solid var(--accent); }

/* ============ 栏目 Tab / 分页 ============ */
.ny_tab { margin: 6px 0 30px; border-bottom: 1px solid var(--line); }
.ny_tab ul { display: flex; gap: 6px; flex-wrap: wrap; }
.ny_tab li a { display: inline-block; padding: 10px 18px; color: var(--text-dim); border-radius: 8px 8px 0 0; transition: all .2s; }
.ny_tab li a:hover { color: var(--primary); }
.ny_tab li.active a { color: #fff; background: var(--primary); }
.pagebar { margin-top: 38px; text-align: center; }
.pagination { display: inline-flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
.page-item { display: inline-block; padding: 8px 14px; border: 1px solid var(--line); border-radius: 8px; color: var(--text); font-size: 14px; transition: all .2s; }
.page-item:hover { border-color: var(--accent); color: var(--primary); }
.tac { text-align: center; }
.text-secondary { color: var(--text-dim); }

/* ============ 列表微调 ============ */
.list-mode { gap: 22px; }
.desc { color: var(--text-dim); font-size: 14px; }
.news-main .date { color: var(--accent); font-weight: 600; font-size: 14px; }
.news-main h4 { font-size: 19px; color: var(--primary-dark); margin: 8px 0; line-height: 1.4; }
.news-main p { color: var(--text-dim); font-size: 14px; }
.sec-title.left { text-align: left; }
.sec-title.left .line { margin-left: 0; }

/* ============ 页脚补充 ============ */
.footer .slogan { margin-top: 10px; color: var(--accent); font-weight: 600; font-size: 14px; }
.footer .f-contact { font-size: 14px; margin-top: 8px; display: flex; align-items: center; gap: 8px; }
.footer .f-contact i { color: var(--accent); width: 18px; }
.banner.sub { padding-top: 96px; }

@media (max-width: 760px) {
  .pro-gallery, .pro-info { float: none; width: 100%; }
  .pro-info { margin-top: 24px; }
}

/* ============ 中英文切换 ============ */
.zh, .en { transition: opacity .2s; }
.en { display: none; }
body.lang-en .zh { display: none; }
body.lang-en .en { display: inline; }
/* 移动抽屉内的语言按钮始终可见 */
.mobile-panel .lang-btn { display: inline-flex; align-self: flex-start; margin: 18px 0 4px; }
/* 当前语言标签文字（按钮内） */
.lang-label { font-weight: 600; }


/* ============ Banner video section ============ */
.banner-video-section{position:relative;width:100%;height:500px;overflow:hidden;background:linear-gradient(125deg,#06182f 0%,#0D47A1 55%,#1565c0 100%);}
.banner-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;}
.banner-video-overlay{position:absolute;inset:0;z-index:1;background:linear-gradient(125deg,rgba(6,24,47,.82) 0%,rgba(13,71,161,.68) 55%,rgba(21,101,192,.52) 100%);}

.banner-video-caption{position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:#fff;padding:0 20px;}
.banner-video-caption h3{font-size:44px;font-weight:800;line-height:1.2;margin-bottom:14px;letter-spacing:2px;text-shadow:0 4px 24px rgba(0,0,0,.35);}
.banner-video-caption p{font-size:20px;font-weight:400;opacity:.95;letter-spacing:1px;text-shadow:0 2px 14px rgba(0,0,0,.35);}
/* 整块 banner 可点击：透明覆盖层，层级高于 video(0)/overlay(1)/caption(2) */
.banner-video-link{position:absolute;inset:0;z-index:3;display:block;}

/* WhatsApp footer QR */
.f-contact a{color:inherit;text-decoration:none}
.f-contact a:hover{color:#25d366}
.foot-wa{margin-top:10px;display:flex;flex-direction:column;align-items:flex-start;gap:8px}
.foot-wa-qr{display:inline-block;background:#fff;border-radius:10px;padding:6px;box-shadow:0 3px 12px rgba(0,0,0,.22);transition:box-shadow .25s}
.foot-wa-qr:hover{box-shadow:0 4px 16px rgba(37,211,102,.5)}
.foot-wa-qr-img{display:block;width:104px;height:104px;border-radius:6px}
.foot-wa .f-contact{margin:0}
/* ============ 关于我们 正文首行缩进 ============ */
.rich.indent2 p { text-indent: 2em; }