/* ============================================================
   深圳市君和智能装备有限公司 - 官网全站样式
   配色：深藏青 #0e2a47 / 藏青亮 #16406e / 工业橙 #f2732d
   ============================================================ */
:root {
  --navy: #0e2a47;
  --navy-2: #16406e;
  --navy-light: #eef3f9;
  --orange: #f2732d;
  --orange-dark: #d95f1c;
  --text: #2b3440;
  --text-light: #6b7686;
  --border: #e3e8ef;
  --white: #ffffff;
  --radius: 10px;
  --shadow: 0 4px 20px rgba(14, 42, 71, 0.08);
  --shadow-hover: 0 10px 30px rgba(14, 42, 71, 0.14);
  --max-w: 1180px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; transition: color .25s; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }

/* ---------- 顶部信息条 ---------- */
.topbar {
  background: var(--navy);
  color: rgba(255,255,255,.8);
  font-size: 13px;
  padding: 7px 0;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.topbar .slogan { letter-spacing: 2px; }
.topbar .tel { color: #fff; white-space: nowrap; }
.topbar .tel b { color: var(--orange); font-weight: 600; }

/* ---------- 导航 ---------- */
.header {
  position: sticky; top: 0; z-index: 100;
  background: var(--white);
  box-shadow: 0 2px 12px rgba(14,42,71,.07);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark {
  height: 46px; width: auto; flex-shrink: 0; display: block; object-fit: contain;
}
.logo-text .cn { font-size: 19px; font-weight: 700; color: var(--navy); letter-spacing: 1px; line-height: 1.3; }
.logo-text .en { font-size: 11px; color: var(--text-light); letter-spacing: .5px; }

.nav { display: flex; gap: 6px; align-items: center; }
.nav a {
  padding: 8px 18px; border-radius: 6px; font-size: 15.5px; font-weight: 500;
  color: var(--text); position: relative;
}
.nav a:hover { color: var(--navy); background: var(--navy-light); }
.nav a.active { color: var(--navy); font-weight: 700; }
.nav a.active::after {
  content: ""; position: absolute; left: 18px; right: 18px; bottom: 2px;
  height: 3px; border-radius: 2px; background: var(--orange);
}
.nav-cta {
  background: var(--orange); color: #fff !important; margin-left: 10px;
  padding: 9px 20px !important; border-radius: 30px !important; font-weight: 600;
}
.nav-cta:hover { background: var(--orange-dark) !important; }
.nav-cta.active::after { display: none; }

/* ---------- 语言切换器 ---------- */
.head-tools { display: flex; align-items: center; gap: 10px; }
.lang-switch { position: relative; }
.lang-btn {
  display: flex; align-items: center; gap: 6px;
  background: var(--navy-light); border: 1px solid var(--border); color: var(--navy);
  padding: 8px 14px; border-radius: 30px; font-size: 13.5px; cursor: pointer; transition: .2s;
  white-space: nowrap; font-family: inherit;
}
.lang-btn:hover { border-color: var(--navy-2); }
.lang-caret { font-size: 10px; transition: transform .25s; }
.lang-btn.open .lang-caret { transform: rotate(180deg); }
.lang-menu {
  position: absolute; top: calc(100% + 8px); right: 0; z-index: 200;
  background: #fff; border: 1px solid var(--border); border-radius: 10px;
  box-shadow: var(--shadow-hover); padding: 6px; min-width: 172px;
  opacity: 0; visibility: hidden; transform: translateY(-6px); transition: .2s;
  list-style: none; margin: 0;
}
.lang-menu.open { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-item {
  padding: 9px 14px; border-radius: 7px; font-size: 14px; color: var(--text);
  cursor: pointer; white-space: nowrap; transition: .15s;
}
.lang-item:hover { background: var(--navy-light); }
.lang-item.on { background: var(--navy); color: #fff; font-weight: 600; }

.menu-toggle {
  display: none; background: none; border: none; cursor: pointer;
  width: 42px; height: 42px; position: relative;
}
.menu-toggle span, .menu-toggle span::before, .menu-toggle span::after {
  content: ""; display: block; position: absolute; height: 2px; width: 24px;
  background: var(--navy); border-radius: 2px; transition: .3s; left: 9px;
}
.menu-toggle span { top: 21px; }
.menu-toggle span::before { top: -7px; left: 0; }
.menu-toggle span::after { top: 7px; left: 0; }
.menu-toggle.open span { background: transparent; }
.menu-toggle.open span::before { transform: rotate(45deg); top: 0; }
.menu-toggle.open span::after { transform: rotate(-45deg); top: 0; }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(1000px 500px at 85% -10%, rgba(242,115,45,.18), transparent 60%),
    radial-gradient(800px 400px at 10% 110%, rgba(22,64,110,.55), transparent 60%),
    linear-gradient(135deg, #0b2340 0%, var(--navy) 45%, var(--navy-2) 100%);
  color: #fff;
  padding: 96px 0 110px;
  position: relative;
  overflow: hidden;
}
.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: 48px 48px;
  pointer-events: none;
}
.hero-inner { position: relative; max-width: 820px; }
.hero .badge {
  display: inline-block; padding: 6px 16px; border: 1px solid rgba(255,255,255,.35);
  border-radius: 30px; font-size: 13.5px; letter-spacing: 2px; margin-bottom: 24px;
  color: rgba(255,255,255,.9);
}
.hero h1 { font-size: 44px; line-height: 1.35; font-weight: 700; letter-spacing: 1px; margin-bottom: 20px; }
.hero h1 em { font-style: normal; color: var(--orange); }
.hero p.sub { font-size: 17px; color: rgba(255,255,255,.82); max-width: 680px; margin-bottom: 40px; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-block; padding: 13px 32px; border-radius: 34px;
  font-size: 15.5px; font-weight: 600; transition: .25s; cursor: pointer; border: none;
}
.btn-primary { background: var(--orange); color: #fff; box-shadow: 0 6px 18px rgba(242,115,45,.35); }
.btn-primary:hover { background: var(--orange-dark); transform: translateY(-2px); color: #fff; }
.btn-ghost { border: 1.5px solid rgba(255,255,255,.6); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.12); color: #fff; }
.btn-outline { border: 1.5px solid var(--navy); color: var(--navy); }
.btn-outline:hover { background: var(--navy); color: #fff; }

/* ---------- 数据条 ---------- */
.stats-band { margin-top: -54px; position: relative; z-index: 5; }
.stats-card {
  background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow-hover);
  display: grid; grid-template-columns: repeat(4, 1fr);
  padding: 30px 10px;
}
.stat { text-align: center; border-right: 1px solid var(--border); }
.stat:last-child { border-right: none; }
.stat .num { font-size: 34px; font-weight: 700; color: var(--navy); line-height: 1.2; }
.stat .num small { font-size: 16px; color: var(--orange); font-weight: 600; }
.stat .label { font-size: 14px; color: var(--text-light); margin-top: 4px; }

/* ---------- 通用 Section ---------- */
.section { padding: 84px 0; }
.section.gray { background: var(--navy-light); }
.section.navy { background: linear-gradient(135deg, var(--navy), var(--navy-2)); color: #fff; }
.sec-head { text-align: center; margin-bottom: 52px; }
.sec-head .kicker {
  font-size: 13px; letter-spacing: 4px; color: var(--orange); font-weight: 700;
  text-transform: uppercase; margin-bottom: 10px;
}
.sec-head h2 { font-size: 32px; color: var(--navy); letter-spacing: 1px; }
.section.navy .sec-head h2 { color: #fff; }
.sec-head .desc { color: var(--text-light); margin-top: 14px; max-width: 640px; margin-left: auto; margin-right: auto; }
.section.navy .sec-head .desc { color: rgba(255,255,255,.75); }
.sec-head .line { width: 52px; height: 4px; background: var(--orange); border-radius: 2px; margin: 18px auto 0; }

/* ---------- 关于卡片（首页） ---------- */
.about-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 48px; align-items: center; }
.about-text h3 { font-size: 24px; color: var(--navy); margin-bottom: 18px; line-height: 1.5; }
.about-text p { color: var(--text-light); margin-bottom: 14px; }
.about-text .values { display: flex; gap: 12px; margin: 22px 0 28px; flex-wrap: wrap; }
.about-text .values span {
  background: var(--navy-light); color: var(--navy); font-weight: 700;
  padding: 8px 22px; border-radius: 6px; font-size: 15px;
  border-left: 3px solid var(--orange);
}
.about-visual {
  background: linear-gradient(150deg, var(--navy) 0%, var(--navy-2) 100%);
  border-radius: var(--radius); padding: 38px 34px; color: #fff;
  display: grid; gap: 22px; box-shadow: var(--shadow);
}
.about-visual .item { display: flex; gap: 16px; align-items: flex-start; }
.about-visual .item .ic {
  width: 42px; height: 42px; border-radius: 8px; flex-shrink: 0;
  background: rgba(255,255,255,.12); display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 700; color: var(--orange);
}
.about-visual .item h4 { font-size: 16px; margin-bottom: 4px; color: #fff; }
.about-visual .item p { font-size: 13.5px; color: rgba(255,255,255,.72); line-height: 1.6; }

/* ---------- 产品卡片 ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.prod-card {
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: .3s; display: flex; flex-direction: column;
}
.prod-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: transparent; }
.prod-img {
  height: 170px; position: relative; overflow: hidden;
  background: #fff;
  display: flex; align-items: center; justify-content: center;
}
.prod-img > img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: contain; padding: 14px; background: #fff;
  transition: opacity .45s ease, transform .45s ease;
}
.prod-img .real { opacity: 0; }
.prod-card:hover .prod-img .design { opacity: 0; transform: scale(1.05); }
.prod-card:hover .prod-img .real { opacity: 1; transform: scale(1.05); }
.prod-img::before {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background-image:
    linear-gradient(rgba(14,42,71,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14,42,71,.06) 1px, transparent 1px);
  background-size: 24px 24px;
}
.prod-img .no {
  position: absolute; top: 10px; left: 14px; font-size: 34px; font-weight: 800;
  color: rgba(14,42,71,.14); letter-spacing: 1px; z-index: 2;
}
.prod-body { padding: 22px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.prod-body h3 { font-size: 18px; color: var(--navy); margin-bottom: 10px; }
.prod-body .fn { font-size: 14px; color: var(--text-light); margin-bottom: 14px; }
.prod-specs { margin-top: auto; border-top: 1px dashed var(--border); padding-top: 14px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 14px; }
.prod-specs .sp { font-size: 12.5px; color: var(--text-light); }
.prod-specs .sp b { display: block; color: var(--navy); font-size: 13.5px; font-weight: 600; }
.tag {
  display: inline-block; font-size: 11.5px; padding: 2px 10px; border-radius: 12px;
  margin-left: 8px; vertical-align: 3px; font-weight: 500;
}
.tag.auto { background: #e5f5ec; color: #1c9d5d; }
.tag.semi { background: #fdeee2; color: var(--orange-dark); }

/* ---------- 流程（首页横向 / 服务页竖向） ---------- */
.process-strip { display: grid; grid-template-columns: repeat(8, 1fr); gap: 10px; }
.pstep { text-align: center; position: relative; padding: 18px 6px; }
.pstep .circle {
  width: 58px; height: 58px; margin: 0 auto 12px; border-radius: 50%;
  background: var(--white); border: 2px solid var(--navy);
  color: var(--navy); font-weight: 700; font-size: 17px;
  display: flex; align-items: center; justify-content: center; position: relative; z-index: 2;
  transition: .25s;
}
.pstep:hover .circle { background: var(--orange); border-color: var(--orange); color: #fff; }
.pstep:not(:last-child)::after {
  content: ""; position: absolute; top: 47px; left: calc(50% + 34px); right: calc(-50% + 34px);
  border-top: 2px dashed rgba(14,42,71,.25);
}
.pstep h4 { font-size: 15px; color: var(--navy); margin-bottom: 6px; }
.pstep p { font-size: 12px; color: var(--text-light); line-height: 1.55; }

/* 服务页时间线 */
.timeline { max-width: 860px; margin: 0 auto; position: relative; padding-left: 0; }
.timeline::before {
  content: ""; position: absolute; left: 29px; top: 8px; bottom: 8px;
  border-left: 2px dashed rgba(255,255,255,.3);
}
.tl-item { display: flex; gap: 26px; margin-bottom: 34px; position: relative; }
.tl-item .node {
  width: 60px; height: 60px; border-radius: 50%; flex-shrink: 0;
  background: var(--orange); color: #fff; font-size: 20px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 0 6px rgba(242,115,45,.25); z-index: 2;
}
.tl-item .card {
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius); padding: 20px 26px; flex: 1; backdrop-filter: blur(2px);
}
.tl-item .card h4 { font-size: 18px; margin-bottom: 8px; }
.tl-item .card ul li { font-size: 14px; color: rgba(255,255,255,.78); padding-left: 16px; position: relative; margin-bottom: 4px; }
.tl-item .card ul li::before { content: ""; position: absolute; left: 0; top: 11px; width: 6px; height: 6px; border-radius: 50%; background: var(--orange); }

/* ---------- CTA 条 ---------- */
.cta-band {
  background: linear-gradient(90deg, var(--orange) 0%, #f5924e 100%);
  padding: 54px 0; color: #fff;
}
.cta-band .container { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-band h3 { font-size: 26px; margin-bottom: 6px; }
.cta-band p { font-size: 15px; opacity: .92; }
.cta-band .btn { background: #fff; color: var(--orange-dark); }
.cta-band .btn:hover { background: var(--navy); color: #fff; }

/* ---------- 页头（内页 Banner） ---------- */
.page-head {
  background:
    radial-gradient(700px 300px at 80% 0%, rgba(242,115,45,.16), transparent 60%),
    linear-gradient(135deg, #0b2340, var(--navy-2));
  color: #fff; padding: 64px 0 56px; position: relative;
}
.page-head::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 44px 44px;
}
.page-head .container { position: relative; }
.page-head h1 { font-size: 34px; letter-spacing: 2px; margin-bottom: 10px; }
.page-head p { color: rgba(255,255,255,.75); font-size: 15.5px; }
.breadcrumb { margin-top: 18px; font-size: 13.5px; color: rgba(255,255,255,.6); }
.breadcrumb a:hover { color: var(--orange); }
.breadcrumb span { margin: 0 8px; }

/* ---------- 关于页 ---------- */
.profile-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: stretch; }
.profile-card {
  background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 36px 38px;
}
.profile-card h3 { color: var(--navy); font-size: 20px; margin-bottom: 18px; padding-bottom: 12px; border-bottom: 2px solid var(--navy-light); position: relative; }
.profile-card h3::after { content: ""; position: absolute; bottom: -2px; left: 0; width: 48px; border-bottom: 2px solid var(--orange); }
.profile-card p { color: var(--text-light); margin-bottom: 12px; font-size: 15px; }
.profile-card ul li { color: var(--text); margin-bottom: 12px; padding-left: 26px; position: relative; font-size: 15px; }
.profile-card ul li::before {
  content: "◆"; position: absolute; left: 0; top: 0; color: var(--orange); font-size: 12px; line-height: 2.1;
}
.info-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 44px; }
.info-cell {
  background: var(--white); border-radius: var(--radius); padding: 26px 20px; text-align: center;
  box-shadow: var(--shadow); border-top: 3px solid var(--orange);
}
.info-cell .v { font-size: 28px; font-weight: 800; color: var(--navy); }
.info-cell .v small { font-size: 14px; }
.info-cell .k { font-size: 14px; color: var(--text-light); margin-top: 4px; }

 .culture-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.culture-card {
  border-radius: var(--radius); padding: 40px 30px; text-align: center;
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.15);
  transition: .3s;
}
.culture-card:hover { background: rgba(255,255,255,.13); transform: translateY(-4px); }
.culture-card .zi { font-size: 40px; font-weight: 800; color: var(--orange); letter-spacing: 6px; margin-bottom: 14px; }
.culture-card p { color: rgba(255,255,255,.78); font-size: 14px; }

/* ---------- 产品详情页式大卡片（products.html） ---------- */
.filter-bar { display: flex; justify-content: center; gap: 12px; margin-bottom: 44px; flex-wrap: wrap; }
.filter-bar button {
  padding: 9px 26px; border-radius: 30px; border: 1.5px solid var(--border);
  background: var(--white); font-size: 14.5px; color: var(--text-light); cursor: pointer; transition: .25s;
}
.filter-bar button:hover { border-color: var(--navy); color: var(--navy); }
.filter-bar button.on { background: var(--navy); border-color: var(--navy); color: #fff; }

.prod-detail {
  background: var(--white); border: 1px solid var(--border); border-radius: 14px;
  margin-bottom: 30px; display: grid; grid-template-columns: 380px 1fr; overflow: hidden;
  transition: .3s;
}
.prod-detail:hover { box-shadow: var(--shadow-hover); border-color: transparent; }
.pd-visual {
  background: #fff; position: relative; overflow: hidden;
  border-right: 1px solid var(--border);
  min-height: 260px;
}
.pd-img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: contain; padding: 18px; background: #fff;
  transition: opacity .45s ease, transform .45s ease;
}
.pd-img.design { opacity: 1; }
.pd-img.real { opacity: 0; }
.prod-detail:hover .pd-img.design { opacity: 0; transform: scale(1.03); }
.prod-detail:hover .pd-img.real { opacity: 1; transform: scale(1.03); }
.pd-figcap {
  position: absolute; left: 12px; bottom: 12px; z-index: 3;
  font-size: 12px; padding: 4px 12px; border-radius: 20px;
  background: rgba(14,42,71,.82); color: #fff; overflow: hidden;
  display: grid;
}
.pd-figcap span { grid-area: 1 / 1; transition: transform .45s ease; line-height: 1.5; white-space: nowrap; }
.pd-figcap .cap-real { transform: translateY(-100%); }
.prod-detail:hover .pd-figcap .cap-design { transform: translateY(100%); }
.prod-detail:hover .pd-figcap .cap-real { transform: translateY(0); }
.switch-hint { text-align: center; color: var(--text-light); font-size: 13.5px; margin: -18px 0 34px; }
.pd-info { padding: 28px 34px; }
.pd-info .title-row { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; flex-wrap: wrap; }
.pd-info .title-row h3 { font-size: 22px; color: var(--navy); }
.pd-info .fn { font-size: 14.5px; color: var(--text-light); margin-bottom: 18px; }
.pd-specs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.pd-specs .cell { background: var(--navy-light); border-radius: 8px; padding: 12px 14px; }
.pd-specs .cell .k { font-size: 12px; color: var(--text-light); }
.pd-specs .cell .v { font-size: 15px; font-weight: 700; color: var(--navy); margin-top: 2px; }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr; gap: 40px; width: 100%; align-items: start; }
.contact-info-card {
  background: linear-gradient(160deg, var(--navy), var(--navy-2)); color: #fff;
  border-radius: 14px; padding: 42px 38px; position: relative; overflow: hidden;
}
.contact-info-card::after {
  content: ""; position: absolute; right: -60px; bottom: -60px; width: 220px; height: 220px;
  border-radius: 50%; border: 30px solid rgba(255,255,255,.05);
}
.contact-info-card h3 { font-size: 22px; margin-bottom: 26px; }
.ci-item { display: flex; gap: 14px; margin-bottom: 20px; font-size: 15px; position: relative; z-index: 2; }
.ci-item .ic {
  width: 38px; height: 38px; border-radius: 8px; flex-shrink: 0;
  background: rgba(242,115,45,.18); color: var(--orange);
  display: flex; align-items: center; justify-content: center; font-size: 16px; font-weight: 700;
}
.ci-item .k { font-size: 12.5px; color: rgba(255,255,255,.55); }
.ci-item .v { color: #fff; }
.wechat-box {
  margin-top: 4px; padding: 18px; border-radius: 12px; position: relative; z-index: 2;
  background: #fff; display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.wechat-box .wechat-qr { width: 168px; height: 168px; object-fit: contain; display: block; }
.wechat-box span { font-size: 13px; color: var(--navy); font-weight: 600; text-align: center; }

.map-embed { margin-top: 60px; }
.map-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap; margin-bottom: 16px;
}
.map-head strong { color: var(--navy); font-size: 16px; }
.map-head .btn { padding: 8px 20px; font-size: 13.5px; }
.map-embed iframe {
  width: 100%; height: 460px; border: 1px solid var(--border);
  border-radius: 14px; box-shadow: var(--shadow); display: block;
}

/* ---------- 页脚 ---------- */
.footer { background: #0a1f38; color: rgba(255,255,255,.7); font-size: 14px; }
.footer-main { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.3fr; gap: 40px; padding: 60px 0 44px; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 18px; position: relative; padding-bottom: 10px; }
.footer h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 26px; border-bottom: 2px solid var(--orange); }
.footer .f-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer .f-logo .logo-mark { height: 42px; width: auto; background: #fff; padding: 5px; border-radius: 8px; }
.footer .f-logo .name { color: #fff; font-weight: 700; font-size: 17px; }
.footer p { margin-bottom: 10px; line-height: 1.8; }
.footer .f-wechat { display: flex; align-items: center; gap: 12px; }
.footer .f-wechat .f-wechat-qr {
  width: 76px; height: 76px; object-fit: contain; display: block;
  background: #fff; padding: 4px; border-radius: 6px;
}
.footer .f-wechat a { flex-shrink: 0; line-height: 0; }
.footer ul li { margin-bottom: 10px; }
.footer ul a:hover { color: var(--orange); }
.footer .f-values { display: flex; gap: 8px; margin-top: 14px; }
.footer .f-values span { border: 1px solid rgba(255,255,255,.25); border-radius: 4px; padding: 3px 12px; font-size: 12.5px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 18px 0; text-align: center; font-size: 13px; color: rgba(255,255,255,.45); }

/* ---------- 回到顶部 ---------- */
.backtop {
  position: fixed; right: 24px; bottom: 30px; width: 44px; height: 44px;
  border-radius: 8px; background: var(--navy); color: #fff; border: none; cursor: pointer;
  font-size: 18px; opacity: 0; visibility: hidden; transition: .3s; z-index: 99;
  box-shadow: var(--shadow-hover);
}
.backtop.show { opacity: 1; visibility: visible; }
.backtop:hover { background: var(--orange); }

/* ---------- 入场动画 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .process-strip { grid-template-columns: repeat(4, 1fr); }
  .pstep:not(:last-child)::after { display: none; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .prod-detail { grid-template-columns: 1fr; }
  .pd-visual { min-height: 160px; }
  .pd-specs { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .topbar .slogan { display: none; }
  .hero { padding: 64px 0 88px; }
  .hero h1 { font-size: 30px; }
  .hero p.sub { font-size: 15px; }
  .stats-card { grid-template-columns: repeat(2, 1fr); gap: 18px 0; }
  .stat:nth-child(2) { border-right: none; }
  .about-grid, .profile-grid, .contact-grid { grid-template-columns: 1fr; }
  .culture-grid { grid-template-columns: 1fr; }
  .info-row { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 56px 0; }
  .sec-head h2 { font-size: 26px; }

  .menu-toggle { display: block; }
  .nav {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    background: var(--white); flex-direction: column; align-items: stretch;
    padding: 12px 20px 20px; box-shadow: 0 14px 24px rgba(14,42,71,.12); gap: 2px;
  }
  .nav.open { display: flex; }
  .nav a { padding: 13px 16px; border-radius: 8px; }
  .nav a.active::after { display: none; }
  .nav a.active { background: var(--navy-light); }
  .nav-cta { margin: 10px 0 0; text-align: center; }
  .lang-btn { padding: 7px 11px; font-size: 12.5px; }
  #langCurrent { max-width: 78px; overflow: hidden; text-overflow: ellipsis; }
}

@media (max-width: 560px) {
  .prod-grid { grid-template-columns: 1fr; }
  .process-strip { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1fr; gap: 26px; }
  .cta-band .container { justify-content: center; text-align: center; }
}