@charset "utf-8";
/* =========================================================================
   GPTECH 独立站 · 样式表
   1. 设计变量      2. 基础重置      3. 通用组件
   4. 头部/页脚     5. 首页          6. 内页区块
   7. 产品详情      8. 表单/新闻     9. 响应式
   ========================================================================= */

/* ------------------------------------------------------------ 1. 变量 */
:root {
  --brand:        #313D95;   /* 品牌标识色（取自 LOGO） */
  --primary:      #1C5CD3;
  --primary-dark: #1449AC;
  --primary-soft: #E8F0FD;
  --primary-line: #C3D8F6;

  --ink:   #16202E;
  --text:  #333C49;
  --muted: #6A7787;
  --faint: #97A3B2;

  --line:      #E4EAF1;
  --line-soft: #EFF3F8;
  --bg:        #FFFFFF;
  --tint:      #F5F8FB;
  --tint-2:    #EDF2F8;

  --dark:   #1E2A3E;
  --dark-2: #16202F;
  --dark-3: #2A3950;

  --warm: #E2603C;
  --ok:   #2F9E6B;

  --radius:    10px;
  --radius-sm: 6px;
  --shadow:    0 2px 10px rgba(22, 32, 46, .05);
  --shadow-md: 0 8px 28px rgba(22, 32, 46, .10);
  --shadow-lg: 0 18px 48px rgba(22, 32, 46, .14);

  --container: 1240px;
  --header-h:  92px;

  /* 产品图展台底：白色机身的透明 PNG 需要浅底才看得清 */
  --stage: radial-gradient(120% 100% at 50% 16%, #FFFFFF 0%, #F0F5FA 52%, #DCE7F2 100%);

  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC",
          "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
html[lang="en"] { --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }

/* ------------------------------------------------------------ 2. 重置 */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 56px); }
body {
  margin: 0; font-family: var(--font); color: var(--text);
  font-size: 15px; line-height: 1.75; background: var(--bg);
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}
h1, h2, h3, h4 { margin: 0; color: var(--ink); font-weight: 700; line-height: 1.35; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; transition: color .18s ease; }
img, svg { display: block; max-width: 100%; }
img { height: auto; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }
table { border-collapse: collapse; }
em { font-style: normal; }
::selection { background: var(--primary); color: #fff; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 28px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 999;
  background: var(--primary); color: #fff; padding: 10px 18px; border-radius: 0 0 6px 0;
}
.skip-link:focus { left: 0; }

/* ------------------------------------------------------------ 3. 组件 */
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  height: 44px; padding: 0 22px; border-radius: var(--radius-sm);
  font-size: 14.5px; font-weight: 500; white-space: nowrap;
  transition: background .18s ease, color .18s ease, border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}
.btn .btn-arrow { transition: transform .2s ease; }
.btn:hover .btn-arrow { transform: translateX(3px); }
.btn-sm { height: 38px; padding: 0 18px; font-size: 14px; }
.btn-block { display: flex; width: 100%; }

.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 2px 10px rgba(28, 92, 211, .22); }
.btn-primary:hover { background: var(--primary-dark); box-shadow: 0 4px 16px rgba(28, 92, 211, .3); }

.btn-outline { border: 1px solid var(--line); background: #fff; color: var(--ink); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

.btn-ghost { border: 1px solid rgba(22, 32, 46, .16); background: rgba(255, 255, 255, .82); color: var(--ink); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); background: #fff; }

.btn-ghost-light { border: 1px solid rgba(255, 255, 255, .55); color: #fff; }
.btn-ghost-light:hover { background: rgba(255, 255, 255, .12); border-color: #fff; }

.btn-text { height: auto; padding: 0; color: var(--primary); font-weight: 500; }
.btn-text:hover { color: var(--primary-dark); }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: var(--radius-sm); color: var(--muted);
  transition: background .18s ease, color .18s ease;
}
.icon-btn:hover { background: var(--tint); color: var(--ink); }

.link-more { display: inline-flex; align-items: center; gap: 5px; color: var(--primary); font-size: 14px; font-weight: 500; }
.link-more svg { transition: transform .2s ease; }
.link-more:hover svg { transform: translateX(3px); }

.tag-link {
  display: inline-flex; align-items: center; height: 24px; padding: 0 9px;
  border: 1px solid var(--primary-line); border-radius: 4px; background: var(--primary-soft);
  color: var(--primary); font-size: 12px; font-weight: 600; letter-spacing: .3px;
}
.tag-link:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* 区块与标题 */
.section { padding: 72px 0; }
.section-tight { padding: 56px 0; }
.section-tint { background: var(--tint); }

.sec-head { position: relative; margin-bottom: 38px; text-align: center; }
.sec-head h2 { font-size: 29px; letter-spacing: .5px; }
.sec-head .rule { display: block; width: 42px; height: 3px; margin: 14px auto 0; border-radius: 2px; background: var(--primary); }
.sec-head .sec-sub { margin-top: 12px; color: var(--muted); font-size: 14.5px; }
.sec-head.is-left { text-align: left; padding-left: 14px; border-left: 4px solid var(--primary); margin-bottom: 26px; }
.sec-head.is-left h2 { font-size: 21px; }
.sec-head.is-left .sec-sub { margin-top: 6px; }
.sec-link {
  position: absolute; right: 0; top: 4px;
  display: inline-flex; align-items: center; gap: 5px; color: var(--muted); font-size: 13.5px;
}
.sec-link:hover { color: var(--primary); }
.sec-head:not(.is-left) .sec-link { top: 6px; }

.grid { display: grid; gap: 22px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-6 { grid-template-columns: repeat(6, 1fr); }

.split-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.panel { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.section-tint .panel { box-shadow: var(--shadow); }
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.panel-head h2 { font-size: 19px; padding-left: 12px; border-left: 4px solid var(--primary); line-height: 1.2; }

/* 面包屑 */
.crumb { border-bottom: 1px solid var(--line-soft); background: #fff; }
.crumb ol { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; height: 44px; font-size: 13px; color: var(--faint); }
.crumb li + li::before { content: "/"; margin-right: 6px; color: var(--line); }
.crumb a:hover { color: var(--primary); }
.crumb li:last-child span { color: var(--muted); }

/* ------------------------------------------------------------ 4. 头部 */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .96); backdrop-filter: saturate(1.6) blur(10px);
  border-bottom: 1px solid var(--line-soft);
}

/* 首页：页眉透明浮在首屏之上；滚动或展开菜单时转为实底 */
body.page-home .site-header {
  position: fixed; left: 0; right: 0;
  background: transparent; backdrop-filter: none; border-bottom-color: transparent;
  transition: background .28s ease, border-color .28s ease, box-shadow .28s ease, backdrop-filter .28s ease;
}
body.page-home .site-header.is-stuck {
  background: rgba(255, 255, 255, .93);
  backdrop-filter: saturate(1.6) blur(12px);
  border-bottom-color: var(--line-soft);
  box-shadow: 0 1px 16px rgba(22, 32, 46, .06);
}
.header-inner { display: flex; align-items: center; gap: 30px; height: var(--header-h); }
.brand { flex: none; display: flex; align-items: center; }
.brand-logo { width: 126px; height: auto; }

.site-nav { flex: 1 1 auto; display: flex; justify-content: center; }
.site-nav ul { display: flex; gap: 6px; }
.nav-link {
  position: relative; display: block; padding: 10px 14px;
  font-size: 15px; color: #3B4553; letter-spacing: .2px; white-space: nowrap;
}
.nav-link:hover { color: var(--primary); }
.nav-link.is-active { color: var(--primary); font-weight: 500; }
.nav-link.is-active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 0;
  height: 2px; border-radius: 2px; background: var(--primary);
}

.header-actions { flex: none; display: flex; align-items: center; gap: 6px; }

/* 语言切换：下拉列出全部语种 */
.lang-wrap { position: relative; }
/* 只留地球图标：与搜索按钮同为 38px 方钮，图标放大到 22px 保持可辨识 */
.lang-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: var(--radius-sm); color: var(--text);
  transition: color .18s ease, background .18s ease;
}
.lang-btn:hover, .lang-wrap.is-open .lang-btn { color: var(--primary); background: var(--tint); }
.lang-menu {
  position: absolute; right: 0; top: calc(100% + 8px); z-index: 120; min-width: 136px;
  padding: 6px; background: #fff; border: 1px solid var(--line);
  border-radius: 9px; box-shadow: var(--shadow-md);
}
.lang-menu a { display: block; padding: 9px 12px; border-radius: 6px; font-size: 14px; color: var(--text); }
.lang-menu a:hover { background: var(--tint); color: var(--primary); }
.lang-menu a.is-on { color: var(--primary); font-weight: 600; }

.header-cta { height: 46px; padding: 0 22px; font-size: 14.5px; border-radius: 8px; margin-left: 6px; }
.menu-toggle { display: none; }

.mobile-nav { border-top: 1px solid var(--line-soft); background: #fff; padding: 12px 0 18px; }
.mobile-nav ul { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px; margin-bottom: 14px; }
.mobile-nav .nav-link { padding: 11px 12px; border-radius: var(--radius-sm); }
.mobile-nav .nav-link.is-active { background: var(--primary-soft); }
.mobile-nav .nav-link.is-active::after { display: none; }

.search-panel { border-top: 1px solid var(--line-soft); background: #fff; padding: 18px 0 22px; }
.search-form {
  display: flex; align-items: center; gap: 10px; height: 50px; padding: 0 14px;
  border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--tint);
  color: var(--muted);
}
.search-form input { flex: 1; border: 0; background: none; outline: none; font-size: 15px; }
.search-results { margin-top: 14px; font-size: 14px; }
.search-results a { display: block; padding: 9px 12px; border-radius: var(--radius-sm); }
.search-results a:hover { background: var(--tint); color: var(--primary); }
.search-results .sr-empty { padding: 9px 2px; color: var(--faint); }
.search-results .sr-kind { margin-left: 8px; color: var(--faint); font-size: 12.5px; }

/* ------------------------------------------------------------ 4b. 页脚 */
/* 页脚骨架：四列链接 → 大字标语 → 分隔线 → 底栏（法务左 / 社交右） */
.site-footer { background: #131C2B; color: rgba(255, 255, 255, .70); font-size: 14px; }
.foot-main { padding: 66px 28px 56px; }

.foot-cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.foot-col h4 { margin-bottom: 22px; color: #fff; font-size: 15px; font-weight: 600; letter-spacing: .2px; }
.foot-col li + li { margin-top: 15px; }

/* 链接：接近纯白；hover 时整条向右滑出一段（同 ABB 的做法） */
.foot-col a,
.foot-contact a {
  display: inline-block;
  color: rgba(255, 255, 255, .88); font-size: 15px; line-height: 1.45;
  transition: transform .26s cubic-bezier(.33, 0, .2, 1), color .2s ease;
}
.foot-col a:hover, .foot-col a:focus-visible {
  transform: translateX(9px); color: #fff;
}
.foot-contact a:hover, .foot-contact a:focus-visible {
  transform: translateX(5px); color: #fff;
}

.foot-statement {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 40px;
  margin-top: 76px;
}
.foot-brand img { width: 146px; }
/* 大字标语：重字重 + 紧行距紧字距，作为页脚的品牌收束 */
.foot-word {
  margin-top: 28px; color: #fff; font-weight: 700;
  font-size: clamp(34px, 5vw, 74px); line-height: 1.02;
}
.foot-word span { display: block; }
html[lang="en"] .foot-word { text-transform: uppercase; letter-spacing: -1.8px; }
html[lang="zh-Hans"] .foot-word { letter-spacing: 2px; }

.foot-contact { flex: none; }
.foot-contact li { display: flex; align-items: flex-start; gap: 10px; }
.foot-contact li + li { margin-top: 16px; }
.foot-contact svg { flex: none; margin-top: 4px; color: rgba(255, 255, 255, .48); }
.foot-contact span { color: rgba(255, 255, 255, .88); font-size: 15px; line-height: 1.45; }

.foot-bar { border-top: 1px solid rgba(255, 255, 255, .13); }
.foot-bar .container {
  display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  min-height: 64px; padding-top: 14px; padding-bottom: 14px;
  color: rgba(255, 255, 255, .42); font-size: 12.5px;
}
.foot-legal { display: flex; flex-wrap: wrap; gap: 6px 24px; }
/* 社交：实心白圆底 + 深色图标（同 ABB），hover 轻微上浮 */
.foot-social { display: flex; gap: 11px; }
.foot-social a {
  display: flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 50%;
  background: #fff; color: #131C2B;
  transition: transform .2s ease, background .2s ease;
}
.foot-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

.back-top {
  position: fixed; right: 22px; bottom: 26px; z-index: 90;
  display: flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 50%;
  background: #fff; color: var(--muted); border: 1px solid var(--line);
  box-shadow: var(--shadow-md); opacity: 0; visibility: hidden;
  transition: opacity .2s ease, visibility .2s ease, color .2s ease;
}
.back-top svg { transform: rotate(180deg); }
.back-top.is-on { opacity: 1; visibility: visible; }
.back-top:hover { color: var(--primary); border-color: var(--primary-line); }

/* ------------------------------------------------------------ 5. 首页 */
/* 首屏：原图整幅通栏铺满，不加蒙版。
   机组位于画面 x 68%–91% / y 19%–70%，横向永不裁切；
   纵向裁掉的只是天花板与地面，机组始终完整。文案落在左侧干净的反光地面上。 */
.home-hero { position: relative; overflow: hidden; background: #EDF3F8; }
.hero-bg { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 48%; }
.home-hero-inner {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: minmax(0, 620px); align-items: center;
  /* 页眉透明浮于其上，首屏吃满整屏；顶部内边距补出页眉高度，文案不被压住 */
  min-height: clamp(560px, 100svh, 960px);
  padding-top: calc(var(--header-h) + 40px); padding-bottom: 52px;
}
/* 文案层次：短横 + 眉标 → 双色大标题 → 描述 → 下划线式 CTA → 参数带
   主视觉重量全部压在标题上，第二行用品牌蓝形成全屏唯一强色点 */
.hh-eyebrow {
  display: block; color: var(--primary); font-size: 13px; font-weight: 600;
  letter-spacing: 1.7px; text-transform: uppercase;
}
.hh-eyebrow::before {
  content: ""; display: block; width: 36px; height: 2px; border-radius: 1px;
  margin-bottom: 22px; background: var(--primary);
}
.hh-title {
  margin-top: 24px; font-weight: 700;
  /* 上限 64px：保证「Precision Thermal」在 620px 栏宽内不断行 */
  font-size: clamp(40px, 4.2vw, 64px); line-height: 1.1; letter-spacing: -1.1px;
}
.hh-title .t1 { display: block; color: var(--ink); }
.hh-title .t2 { display: block; color: var(--primary); }
.hh-desc { margin-top: 26px; max-width: 430px; color: #5A6675; font-size: 18px; line-height: 1.72; }

.hh-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 30px; margin-top: 34px; }
.hh-cta {
  display: inline-flex; align-items: center;
  padding-bottom: 11px; border-bottom: 2px solid var(--primary);
  color: var(--primary); font-size: 16px; font-weight: 600;
  transition: color .18s ease, border-color .18s ease;
}
.hh-cta:hover { color: var(--primary-dark); border-bottom-color: var(--primary-dark); }
.hh-cta2 { display: inline-flex; align-items: center; gap: 8px; color: var(--muted); font-size: 14.5px; }
.hh-cta2:hover { color: var(--primary); }

/* 参数带：数字压深、标签小字大字距，靠竖线分隔 */
.hh-stats { display: flex; flex-wrap: wrap; gap: 18px 0; margin-top: 58px; }
.hh-stats li { position: relative; padding: 0 26px; }
.hh-stats li:first-child { padding-left: 0; }
.hh-stats li + li::before {
  content: ""; position: absolute; left: 0; top: 4px; bottom: 6px;
  width: 1px; background: rgba(22, 32, 46, .16);
}
.hh-stats b { display: block; font-size: 34px; font-weight: 700; color: var(--ink); letter-spacing: -.5px; line-height: 1.1; }
.hh-stats span {
  display: block; margin-top: 9px; color: var(--muted);
  font-size: 12px; letter-spacing: 1.1px; text-transform: uppercase;
}

/* 特性条：图标为实色蓝、无底盒，四项成组居中（对齐原型稿） */
.feature-bar {
  background: linear-gradient(180deg, #F7FAFD 0%, #EFF4FA 100%);
  border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft);
}
.feature-bar ul {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 20px clamp(38px, 6.6vw, 96px); padding: 26px 0;
}
.feature-bar li { display: flex; align-items: center; gap: 12px; min-width: 0; }
.feature-bar li > div { min-width: 0; }
/* 注意：副标题选择器必须限定在 > div 内，否则会连图标外层 span 一起染色 */
.feature-bar .fb-icon { flex: none; display: flex; color: var(--primary); }
.feature-bar .fb-icon svg { stroke-width: 1.9; }
.why-icon svg, .svc-icon svg, .value-icon svg, .sp-icon svg, .cc-icon svg { stroke-width: 1.75; }
.feature-bar strong { display: block; font-size: 15.5px; color: var(--ink); font-weight: 600; letter-spacing: .2px; }
.feature-bar li > div span { display: block; margin-top: 1px; color: var(--muted); font-size: 12.5px; overflow-wrap: anywhere; }

.ind-card {
  display: block; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden; transition: box-shadow .22s ease, transform .22s ease, border-color .22s ease;
}
.ind-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: var(--primary-line); }
.ind-thumb { aspect-ratio: 16 / 10; overflow: hidden; background: var(--tint-2); }
.ind-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.ind-card:hover .ind-thumb img { transform: scale(1.05); }
.ind-body { padding: 16px 18px 20px; }
.ind-body h3 { font-size: 16px; }
.ind-body p { margin-top: 7px; color: var(--muted); font-size: 13.5px; line-height: 1.7; }

.sys-panel {
  display: grid; grid-template-columns: 356px 1fr; gap: 36px; align-items: center;
  padding: 40px; background: #fff; border: 1px solid var(--line); border-radius: 14px;
}
/* 标题沿用首屏那套语言：上方短横 + 收紧字距；副线改小字大字距，与首屏参数标签同调 */
.sys-copy h2 {
  font-size: 29px; line-height: 1.32; letter-spacing: -.3px;
  text-wrap: balance;                     /* 英文标题两行更均衡，不支持时自然降级 */
}
.sys-copy h2::before {
  content: ""; display: block; width: 34px; height: 2px; border-radius: 1px;
  margin-bottom: 20px; background: var(--primary);
}
.sys-lead {
  display: flex; flex-wrap: wrap; align-items: center; gap: 9px;
  margin-top: 14px; color: var(--muted);
  font-size: 12.5px; letter-spacing: 1.1px; text-transform: uppercase;
}
.sys-lead i { width: 3px; height: 3px; border-radius: 50%; background: var(--primary); opacity: .55; }
.sys-points { margin-top: 30px; }
.sys-points li { display: flex; align-items: flex-start; gap: 13px; }
.sys-points li + li { margin-top: 20px; }
.sp-icon {
  flex: none; display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 9px; background: var(--primary-soft); color: var(--primary);
}
.sys-points strong { display: block; font-size: 15px; color: var(--ink); font-weight: 600; }
.sys-points li > div span { display: block; color: var(--muted); font-size: 13px; }
/* ---- 一体化系统实体图 + 编号标注 ---- */
.sys-figure { margin: 0; }
.sys-photo { position: relative; background: #fff; }
.sys-photo img { width: 100%; height: auto; }
.sys-pin {
  position: absolute; transform: translate(-50%, -50%);
  display: flex; align-items: center; justify-content: center;
  width: 23px; height: 23px; border-radius: 50%;
  background: var(--primary); color: #fff;
  font-size: 12px; font-weight: 700; line-height: 1;
  box-shadow: 0 2px 7px rgba(28, 92, 211, .38), 0 0 0 3px rgba(255, 255, 255, .95);
  transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
}
/* 编号与图例互相高亮 */
.sys-pin.is-hot {
  transform: translate(-50%, -50%) scale(1.28);
  background: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(28, 92, 211, .5), 0 0 0 4px rgba(255, 255, 255, .98);
}
.sys-legend {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 9px 16px; margin-top: 18px;
}
.sys-legend li {
  display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--text);
  cursor: default; transition: color .2s ease;
}
.sys-legend i {
  flex: none; display: flex; align-items: center; justify-content: center;
  width: 19px; height: 19px; border-radius: 50%;
  background: var(--primary-soft); color: var(--primary);
  font-style: normal; font-size: 11px; font-weight: 700;
  transition: background .2s ease, color .2s ease;
}
.sys-legend li.is-hot { color: var(--primary); }
.sys-legend li.is-hot i { background: var(--primary); color: #fff; }
.sys-loops { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--line); }
.sys-loops .loop { display: flex; align-items: center; gap: 9px; color: var(--muted); font-size: 12.5px; }
.sys-loops .loop::before { content: ""; width: 30px; height: 3.5px; border-radius: 2px; }
.loop-cool::before { background: #2E7BD6; }
.loop-heat::before { background: #E2603C; }

/* ---- 型号轮播：无缝左滑 ---- */
.model-carousel { position: relative; }
/* 两侧渐隐，暗示还有更多内容 */
.model-carousel::before, .model-carousel::after {
  content: ""; position: absolute; top: 0; bottom: 0; width: 56px; z-index: 2; pointer-events: none;
  opacity: 0; transition: opacity .25s ease;
}
.model-carousel::before { left: 0; background: linear-gradient(90deg, #fff 12%, rgba(255,255,255,0)); }
.model-carousel::after { right: 0; background: linear-gradient(270deg, #fff 12%, rgba(255,255,255,0)); }
.model-carousel.can-prev::before, .model-carousel.can-next::after { opacity: 1; }

.model-rail { overflow-x: auto; scrollbar-width: none; scroll-snap-type: x mandatory; }
.model-rail::-webkit-scrollbar { display: none; }
.model-rail.is-dragging { scroll-snap-type: none; cursor: grabbing; }
.model-track { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(178px, 1fr); gap: 18px; padding: 4px 0; }
.model-card.is-clone { pointer-events: none; }

.rail-nav {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
  display: flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 50%;
  background: #fff; border: 1px solid var(--line); color: var(--muted);
  box-shadow: var(--shadow-md);
  transition: color .18s ease, border-color .18s ease, background .18s ease, opacity .2s ease;
}
.rail-nav:hover { color: var(--primary); border-color: var(--primary-line); background: var(--primary-soft); }
.rail-nav:active { transform: translateY(-50%) scale(.94); }
.rail-prev { left: -19px; }
.rail-next { right: -19px; }

.rail-dots { display: flex; justify-content: center; gap: 7px; margin-top: 22px; }
.rail-dots i { width: 7px; height: 7px; border-radius: 50%; background: var(--line); cursor: pointer; transition: background .2s ease, width .2s ease; }
.rail-dots i:hover { background: var(--primary-line); }
.rail-dots i.is-on { width: 20px; border-radius: 4px; background: var(--primary); }
.model-card {
  scroll-snap-align: start;
  display: flex; flex-direction: column; padding: 16px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  transition: box-shadow .22s ease, transform .22s ease, border-color .22s ease;
}
.model-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: var(--primary-line); }
.mc-thumb { height: 128px; display: flex; align-items: center; justify-content: center; margin-bottom: 12px; padding: 8px; border-radius: 8px; background: var(--stage); }
.mc-thumb img { max-height: 112px; width: auto; }
.mc-head { display: flex; align-items: center; gap: 8px; }
.mc-head b { font-size: 16px; color: var(--ink); }
.mc-tag {
  display: inline-flex; align-items: center; height: 21px; padding: 0 8px;
  border-radius: 11px; background: var(--primary); color: #fff; font-size: 11.5px; font-weight: 600;
}
.mc-meta { margin-top: 7px; color: var(--muted); font-size: 12.5px; }
.rail-more { margin-top: 20px; text-align: center; }

/* ---- 首页引言带：左引言 / 右导语与行动，中间竖线分栏 ---- */
.quote-band { background: #EDF1F5; padding: 76px 0; }
.qb { display: grid; grid-template-columns: minmax(0, 1.16fr) minmax(0, 1fr); }
.qb-quote { margin: 0; padding-right: 66px; }
.qb-mark { display: block; margin-bottom: 20px; color: var(--primary); }
.qb-text { color: var(--ink); font-size: 26px; line-height: 1.5; letter-spacing: -.2px; }
.qb-by { margin-top: 32px; }
.qb-by b { display: block; color: var(--ink); font-size: 15px; font-weight: 600; }
.qb-by span { display: block; margin-top: 4px; color: var(--faint); font-size: 14.5px; }

.qb-side { padding-left: 66px; border-left: 1px solid rgba(22, 32, 46, .17); }
.qb-side h3 { font-size: 20px; line-height: 1.5; }
.qb-side p { margin-top: 14px; color: var(--muted); font-size: 15.5px; line-height: 1.72; }
.qb-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 22px; margin-top: 28px; }
.qb-tel { display: inline-flex; align-items: center; gap: 8px; color: var(--muted); font-size: 14.5px; }
.qb-tel:hover { color: var(--primary); }

/* ------------------------------------------------------------ 6. 内页区块 */
.page-hero { position: relative; overflow: hidden; background: var(--tint-2); }
.page-hero::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(245, 249, 252, .97) 0%, rgba(245, 249, 252, .9) 38%, rgba(238, 244, 250, .4) 62%, rgba(238, 244, 250, .05) 100%);
}
.hero-inner { position: relative; z-index: 2; padding: 54px 28px 46px; min-height: 320px; }
.hero-copy { max-width: 700px; }
.hero-copy h1 { font-size: 40px; letter-spacing: 1px; }
.hero-sub { margin-top: 10px; font-size: 20px; font-weight: 600; color: var(--ink); }
.hero-desc { margin-top: 16px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.hero-chips { display: flex; flex-wrap: wrap; gap: 16px 26px; margin-top: 26px; }
.hero-chips li { display: flex; align-items: flex-start; gap: 10px; color: var(--primary); }
.hero-chips div { color: var(--text); }
.hero-chips strong { display: block; font-size: 14px; font-weight: 600; color: var(--ink); }
.hero-chips span { display: block; color: var(--muted); font-size: 12.5px; line-height: 1.6; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 46px; margin-top: 28px; }
.hero-stats li { color: var(--primary); }
.hero-stats b { display: block; margin-top: 4px; font-size: 30px; font-weight: 700; letter-spacing: .5px; }
.hero-stats span { display: block; color: var(--muted); font-size: 13px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.hero-about .hero-copy { max-width: 560px; }
.hero-about::after {
  background: linear-gradient(100deg, rgba(248, 251, 253, .97) 0%, rgba(248, 251, 253, .88) 34%, rgba(240, 246, 251, .3) 60%, rgba(240, 246, 251, 0) 100%);
}

/* 系列切换条 */
.series-tabs { padding: 22px 0; background: #fff; border-bottom: 1px solid var(--line-soft); }
.series-tabs ul { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.stab {
  display: flex; align-items: center; gap: 12px; padding: 12px 16px;
  background: var(--tint); border: 1px solid transparent; border-radius: var(--radius);
  transition: background .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.stab:hover { background: #fff; border-color: var(--primary-line); box-shadow: var(--shadow); }
.stab.is-active { background: var(--primary); border-color: var(--primary); box-shadow: 0 4px 14px rgba(28, 92, 211, .25); }
.stab-thumb {
  flex: none; display: flex; align-items: center; justify-content: center;
  width: 52px; height: 52px; padding: 4px; border-radius: 7px;
  background: var(--stage); border: 1px solid var(--line-soft); overflow: hidden;
}
.stab-thumb img { max-height: 42px; width: auto; }
.stab-text b { display: block; font-size: 14.5px; color: var(--ink); font-weight: 600; }
.stab-text i { display: block; font-style: normal; color: var(--muted); font-size: 12px; }
.stab.is-active .stab-text b, .stab.is-active .stab-text i { color: #fff; }
.stab.is-active .stab-text i { color: rgba(255, 255, 255, .75); }

/* 产品系列卡 */
.prod-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.prod-card {
  display: flex; flex-direction: column; padding: 22px 20px 20px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  transition: box-shadow .22s ease, transform .22s ease, border-color .22s ease;
}
.prod-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.prod-card.is-primary { border-color: var(--primary-line); background: linear-gradient(180deg, #F7FAFE 0%, #fff 42%); }
.pc-head h3 { font-size: 19px; line-height: 1.4; }
.pc-head h3 span { font-weight: 700; }
.pc-badge {
  display: inline-flex; align-items: center; height: 24px; margin-top: 10px; padding: 0 10px;
  border: 1px solid var(--line); border-radius: 4px; background: var(--tint);
  color: var(--muted); font-size: 12px;
}
.prod-card.is-primary .pc-badge { border-color: var(--primary-line); background: var(--primary-soft); color: var(--primary); }
.pc-thumb {
  height: 178px; display: flex; align-items: center; justify-content: center; margin: 16px 0;
  padding: 12px; border-radius: 8px; background: var(--stage); border: 1px solid var(--line-soft);
}
.pc-thumb img { max-height: 154px; width: auto; }
.pc-desc { color: var(--muted); font-size: 13px; line-height: 1.8; min-height: 68px; }
.pc-specs { margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--line); flex: 1; }
.pc-specs li { display: flex; align-items: flex-start; gap: 6px; font-size: 12.5px; line-height: 1.9; color: var(--muted); }
.pc-specs li svg { flex: none; margin-top: 5px; color: var(--primary); }
.pc-specs .k { flex: none; }
.pc-specs b { color: var(--ink); font-weight: 600; }
.pc-foot { margin-top: 18px; }
.pc-foot .btn { width: 100%; }

/* 完整产品线 */
.line-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.line-item {
  display: grid; grid-template-columns: 54px 1fr 20px; align-items: center; gap: 4px 12px;
  padding: 14px 16px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm);
  transition: border-color .2s ease, box-shadow .2s ease;
}
.line-item:hover { border-color: var(--primary-line); box-shadow: var(--shadow); }
.li-code { grid-column: 1; grid-row: 1 / span 2; align-self: center; font-weight: 700; color: var(--primary); font-size: 15px; letter-spacing: .5px; }
.li-name { grid-column: 2; grid-row: 1; color: var(--ink); font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.li-range { grid-column: 2; grid-row: 2; color: var(--muted); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.li-arrow { grid-column: 3; grid-row: 1 / span 2; align-self: center; color: var(--faint); transition: transform .2s ease, color .2s ease; }
.line-item:hover .li-arrow { color: var(--primary); transform: translateX(3px); }

/* 为什么选择 */
.why-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; }
.why-item { text-align: center; padding: 8px; }
.why-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 62px; height: 62px; margin-bottom: 14px; border-radius: 50%;
  background: #fff; color: var(--primary); box-shadow: var(--shadow);
}
.why-item h3 { font-size: 15.5px; }
.why-item p { margin-top: 4px; color: var(--muted); font-size: 12.5px; line-height: 1.75; }

/* 解决方案卡 */
.sol-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: box-shadow .22s ease, border-color .22s ease; }
.sol-card:hover { box-shadow: var(--shadow-md); border-color: var(--primary-line); }
.sol-thumb { aspect-ratio: 16 / 9; background: var(--tint-2); overflow: hidden; }
.sol-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.sol-card:hover .sol-thumb img { transform: scale(1.05); }
.sol-body { padding: 18px 20px 20px; display: flex; flex-direction: column; flex: 1; }
.sol-body h3 { font-size: 16px; }
.sol-body p { margin-top: 8px; color: var(--muted); font-size: 13.5px; line-height: 1.75; flex: 1; }
.sol-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.sol-body .link-more { margin-top: 14px; }

/* 流程条 */
.flow-strip {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px;
  padding: 28px 22px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
}
.flow-step { position: relative; padding: 0 12px; text-align: left; }
.fs-icon { display: block; color: var(--primary); margin-bottom: 12px; }
.fs-n {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 26px; height: 22px; padding: 0 6px; margin-right: 8px;
  border-radius: 4px; background: var(--primary-soft); color: var(--primary);
  font-size: 12.5px; font-weight: 700;
}
.flow-step b { font-size: 14.5px; color: var(--ink); }
.flow-step p { margin-top: 8px; color: var(--muted); font-size: 12.5px; line-height: 1.7; }
.fs-arrow { position: absolute; right: -14px; top: 4px; color: var(--line); }

/* 方案优势 */
.adv-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.adv-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.adv-thumb { aspect-ratio: 16 / 9; background: var(--tint-2); overflow: hidden; }
.adv-thumb img { width: 100%; height: 100%; object-fit: cover; }
.adv-body { padding: 16px 18px 18px; }
.adv-body h3 { display: flex; align-items: center; gap: 8px; font-size: 15px; }
.adv-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 24px; height: 24px; border-radius: 5px; background: var(--primary-soft); color: var(--primary);
}
.adv-body ul { margin-top: 12px; }
.adv-body li { position: relative; padding-left: 13px; color: var(--muted); font-size: 12.5px; line-height: 2; }
.adv-body li::before { content: ""; position: absolute; left: 0; top: 11px; width: 4px; height: 4px; border-radius: 50%; background: var(--primary); }

/* 案例卡 */
.case-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; padding-bottom: 16px; }
.case-thumb { aspect-ratio: 16 / 8; background: var(--tint-2); overflow: hidden; }
.case-thumb img { width: 100%; height: 100%; object-fit: cover; }
.case-card h3 { margin: 14px 18px 0; font-size: 15px; }
.case-prod { margin: 6px 18px 0; color: var(--primary); font-size: 12.5px; }
.case-spec { margin: 3px 18px 0; color: var(--muted); font-size: 12.5px; }

/* 行业卡 */
.sector-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: box-shadow .22s ease, border-color .22s ease; }
.sector-card:hover { box-shadow: var(--shadow-md); border-color: var(--primary-line); }
.sector-thumb { position: relative; aspect-ratio: 16 / 9; background: var(--tint-2); overflow: hidden; }
.sector-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.sector-card:hover .sector-thumb img { transform: scale(1.05); }
.sector-badge {
  position: absolute; left: 14px; bottom: 14px;
  display: flex; align-items: center; justify-content: center; width: 34px; height: 34px;
  border-radius: 8px; background: rgba(255, 255, 255, .92); color: var(--primary); box-shadow: var(--shadow);
}
.sector-body { padding: 16px 18px 18px; display: flex; flex-direction: column; flex: 1; }
.sector-body h3 { font-size: 16px; }
.sector-body > p { margin-top: 8px; color: var(--muted); font-size: 13px; line-height: 1.75; }
.sector-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; padding: 11px 12px; background: var(--tint); border-radius: var(--radius-sm); flex: 1; align-content: flex-start; }
.sector-tags li { position: relative; padding-left: 11px; color: var(--muted); font-size: 12px; line-height: 1.9; }
.sector-tags li::before { content: ""; position: absolute; left: 0; top: 10px; width: 3.5px; height: 3.5px; border-radius: 50%; background: var(--faint); }
.sector-foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 14px; }

/* 客户 */
.cust-grid { display: grid; grid-template-columns: repeat(8, 1fr); gap: 12px; }
.cust-item {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  height: 76px; padding: 0 8px; text-align: center;
  background: var(--tint); border: 1px solid var(--line-soft); border-radius: var(--radius-sm);
  transition: background .2s ease, border-color .2s ease;
}
.cust-item:hover { background: #fff; border-color: var(--primary-line); }
.cust-en { color: var(--ink); font-size: 13px; font-weight: 700; letter-spacing: .5px; }
.cust-zh { color: var(--muted); font-size: 11.5px; }
.cust-note { margin-top: 14px; text-align: center; color: var(--faint); font-size: 12px; }

/* 服务卡 */
.svc-card { padding: 24px 18px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); text-align: center; transition: box-shadow .22s ease, transform .22s ease; }
.svc-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.svc-icon { display: inline-flex; align-items: center; justify-content: center; width: 56px; height: 56px; margin-bottom: 14px; border-radius: 50%; background: var(--primary-soft); color: var(--primary); }
.svc-card h3 { font-size: 15.5px; }
.svc-card p { margin-top: 3px; color: var(--muted); font-size: 12.5px; line-height: 1.75; }

/* 下载 / FAQ */
.dl-wrap { display: grid; grid-template-columns: 1fr 178px; gap: 18px; align-items: start; }
.dl-list li + li { margin-top: 4px; }
.dl-list a { display: flex; align-items: center; gap: 12px; padding: 11px 12px; border-radius: var(--radius-sm); transition: background .18s ease; }
.dl-list a:hover { background: var(--tint); }
.dl-icon { flex: none; display: flex; color: var(--primary); }
.dl-text { flex: 1; min-width: 0; }
.dl-text b { display: block; font-size: 13.5px; color: var(--ink); font-weight: 500; }
.dl-text i { display: block; font-style: normal; color: var(--faint); font-size: 12px; }
.dl-act { flex: none; color: var(--faint); }
.dl-list a:hover .dl-act { color: var(--primary); }
.dl-visual { border-radius: var(--radius-sm); overflow: hidden; background: var(--tint); }

.faq-item { border-bottom: 1px solid var(--line-soft); }
.faq-item:last-child { border-bottom: 0; }
.faq-q { display: flex; align-items: center; gap: 11px; width: 100%; padding: 15px 4px; text-align: left; }
.faq-mark {
  flex: none; display: flex; align-items: center; justify-content: center;
  width: 22px; height: 22px; border-radius: 5px; background: var(--primary-soft);
  color: var(--primary); font-size: 12px; font-weight: 700;
}
.faq-text { flex: 1; font-size: 14px; color: var(--ink); }
.faq-chev { flex: none; color: var(--faint); transition: transform .22s ease; }
.faq-item.is-open .faq-chev { transform: rotate(180deg); color: var(--primary); }
.faq-a { display: none; padding: 0 4px 16px 44px; color: var(--muted); font-size: 13.5px; line-height: 1.85; }
.faq-item.is-open .faq-a { display: block; }

/* 服务流程 */
.proc-strip { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; }
.proc-step {
  position: relative; padding: 20px 16px; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius);
}
.ps-icon { display: block; color: var(--primary); margin-bottom: 10px; }
.proc-step b { font-size: 14.5px; color: var(--ink); }
.proc-step p { margin-top: 4px; color: var(--muted); font-size: 12px; line-height: 1.7; }
.ps-n {
  position: absolute; right: 14px; top: 12px;
  font-size: 20px; font-weight: 700; color: var(--line); letter-spacing: .5px;
}
.ps-arrow { position: absolute; right: -12px; top: 50%; transform: translateY(-50%); color: var(--line); z-index: 2; }

/* 关于我们 */
.profile-split { display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); gap: 36px; align-items: start; }
.profile-text p { color: var(--text); font-size: 14.5px; line-height: 2.1; }
.profile-text p + p { margin-top: 18px; }
.profile-range { color: var(--muted) !important; font-size: 13.5px !important; }
.profile-actions { margin-top: 24px; }
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.value-card { padding: 24px 10px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); text-align: center; transition: box-shadow .22s ease; }
.value-card:hover { box-shadow: var(--shadow-md); }
.value-icon { display: inline-flex; align-items: center; justify-content: center; width: 54px; height: 54px; margin-bottom: 12px; color: var(--primary); }
.value-card h3 { font-size: 15.5px; }
.value-card p { margin-top: 3px; color: var(--muted); font-size: 12.5px; line-height: 1.75; }

.timeline { position: relative; display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; padding-top: 26px; }
.timeline::before { content: ""; position: absolute; left: 6%; right: 6%; top: 32px; height: 2px; background: var(--line); }
.tl-item { position: relative; padding: 0 8px; text-align: center; }
.tl-dot { position: absolute; left: 50%; top: -20px; transform: translateX(-50%); width: 13px; height: 13px; border-radius: 50%; background: #fff; border: 3px solid var(--primary); z-index: 2; }
.tl-year { display: block; margin-top: 12px; font-size: 20px; font-weight: 700; color: var(--ink); }
.tl-title { display: block; margin-top: 6px; font-size: 13.5px; color: var(--ink); font-weight: 500; }
.tl-desc { display: block; margin-top: 4px; color: var(--muted); font-size: 12.5px; line-height: 1.7; }

.split-strength { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); }
.cap-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
.cap-card { margin: 0; border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; background: var(--tint); }
.cap-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.cap-card figcaption { padding: 11px 12px 13px; background: #fff; }
.cap-card b { display: block; font-size: 13.5px; color: var(--ink); }
.cap-card span { display: block; margin-top: 2px; color: var(--muted); font-size: 12px; line-height: 1.6; }
.map-wrap { border-radius: var(--radius-sm); overflow: hidden; background: var(--tint); padding: 8px; }
.map-legend { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 14px; }
.map-legend li { position: relative; padding-left: 14px; color: var(--muted); font-size: 12.5px; }
.map-legend li::before { content: ""; position: absolute; left: 0; top: 8px; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); }

/* CTA */
.cta-band { position: relative; overflow: hidden; background: var(--dark-2); }
.cta-bg { position: absolute; inset: 0; }
.cta-bg img { width: 100%; height: 100%; object-fit: cover; }
.cta-band::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(20, 32, 50, .96) 0%, rgba(20, 32, 50, .88) 42%, rgba(20, 32, 50, .5) 78%, rgba(20, 32, 50, .32) 100%);
}
.cta-inner {
  position: relative; z-index: 2;
  display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap;
  padding-top: 44px; padding-bottom: 44px;
}
.cta-copy h2 { color: #fff; font-size: 26px; line-height: 1.5; }
.cta-copy p { margin-top: 10px; color: rgba(255, 255, 255, .65); font-size: 14px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.cta-home .cta-inner { padding-top: 54px; padding-bottom: 54px; }

/* ------------------------------------------------------------ 7. 产品详情 */
.pd-hero { background: linear-gradient(180deg, #F6F9FD 0%, #FFF 100%); border-bottom: 1px solid var(--line-soft); }
.pd-hero-inner { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 40%); gap: 40px; align-items: center; padding-top: 44px; padding-bottom: 44px; }
.pd-eyebrow { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.pd-code { font-size: 13px; font-weight: 700; letter-spacing: 2px; color: var(--primary); }
.pd-badge {
  display: inline-flex; align-items: center; height: 24px; padding: 0 10px;
  border: 1px solid var(--primary-line); border-radius: 4px; background: var(--primary-soft);
  color: var(--primary); font-size: 12px;
}
.pd-copy h1 { font-size: 34px; }
.pd-tagline { margin-top: 10px; font-size: 16px; color: var(--ink); font-weight: 500; }
.pd-summary { margin-top: 12px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.pd-specs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 24px; margin-top: 24px; padding: 18px 20px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.pd-specs li { display: flex; align-items: center; flex-wrap: wrap; gap: 4px 8px; font-size: 13px; min-width: 0; }
.pds-icon { display: flex; flex: none; color: var(--primary); }
.pds-k { flex: none; color: var(--muted); }
.pds-v { margin-left: auto; color: var(--ink); font-weight: 600; overflow-wrap: anywhere; }
.pd-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 26px; }
.pd-stage {
  display: flex; align-items: center; justify-content: center; padding: 30px;
  background: radial-gradient(120% 90% at 50% 22%, #FFFFFF 0%, #EDF3F9 62%, #DCE7F1 100%);
  border-radius: 16px; border: 1px solid var(--line);
}
.pd-stage img { max-height: 420px; width: auto; filter: drop-shadow(0 20px 34px rgba(22, 32, 46, .16)); }

.pd-subnav { position: sticky; top: var(--header-h); z-index: 60; background: rgba(255, 255, 255, .96); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line-soft); }
.pd-subnav ul { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.pd-subnav ul::-webkit-scrollbar { display: none; }
.pd-subnav a { position: relative; display: block; padding: 15px 16px; font-size: 14px; color: var(--muted); white-space: nowrap; }
.pd-subnav a:hover { color: var(--primary); }
.pd-subnav a.is-active { color: var(--primary); font-weight: 500; }
.pd-subnav a.is-active::after { content: ""; position: absolute; left: 16px; right: 16px; bottom: 0; height: 2.5px; border-radius: 2px 2px 0 0; background: var(--primary); }

.pd-intro p { max-width: 980px; color: var(--text); font-size: 14.5px; line-height: 2.1; }

.feat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 26px; }
.feat-item { display: flex; align-items: flex-start; gap: 13px; padding: 14px 16px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm); }
.feat-n { flex: none; font-size: 14px; font-weight: 700; color: var(--primary); opacity: .55; }
.feat-text { font-size: 13.5px; line-height: 1.8; }

.app-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px 20px; }
.app-item { display: flex; align-items: flex-start; gap: 9px; padding: 11px 14px; background: var(--tint); border-radius: var(--radius-sm); font-size: 13.5px; }
.app-item svg { flex: none; margin-top: 4px; color: var(--ok); }

/* 原理图 */
.diagram { margin: 0; }
.diagram-canvas { padding: 24px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow-x: auto; }
.diagram-canvas svg { width: 100%; min-width: 680px; height: auto; font-family: var(--font); }
.diagram figcaption { margin-top: 12px; color: var(--faint); font-size: 12.5px; }

/* 型号说明 */
.spec-title { display: flex; align-items: center; gap: 9px; margin-bottom: 16px; font-size: 18px; }
.spec-title .dot { width: 16px; height: 9px; border-radius: 5px; background: linear-gradient(90deg, var(--primary) 0 50%, var(--warm) 50% 100%); }
.spec-title em { color: var(--muted); font-size: 15px; font-weight: 400; }
.spec-title b { color: var(--ink); }
.naming-body { display: grid; grid-template-columns: minmax(300px, 340px) 1fr; gap: 30px; padding: 26px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); align-items: start; }
.naming-pattern { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 9px 6px; padding: 24px 16px; background: var(--tint); border-radius: var(--radius-sm); }
.np { position: relative; display: inline-flex; align-items: center; justify-content: center; min-width: 32px; height: 38px; padding: 0 8px; background: #fff; border: 1px solid var(--line); border-radius: 5px; font-weight: 700; color: var(--ink); font-size: 15px; }
.np::after { content: attr(data-i); position: absolute; top: -7px; right: -6px; width: 16px; height: 16px; border-radius: 50%; background: var(--primary); color: #fff; font-size: 10px; font-weight: 600; display: flex; align-items: center; justify-content: center; }
.np-dash { border: 0; background: none; min-width: 14px; }
.np-dash::after { display: none; }
.naming-list li { position: relative; padding-left: 2px; color: var(--muted); font-size: 13.5px; line-height: 2; }
.naming-list li + li { margin-top: 4px; }

/* 参数表 */
.spec-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.spec-tab { height: 36px; padding: 0 16px; border: 1px solid var(--line); border-radius: 18px; background: #fff; color: var(--muted); font-size: 13.5px; transition: all .18s ease; }
.spec-tab:hover { border-color: var(--primary-line); color: var(--primary); }
.spec-tab.is-active { background: var(--primary); border-color: var(--primary); color: #fff; }
.spec-panel.is-hidden { display: none; }
.spec-block { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.spec-panels:not(.is-tabbed) .spec-panel + .spec-panel { margin-top: 22px; }
.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-sm); }
.spec-table { width: 100%; min-width: 720px; font-size: 12.5px; background: #fff; }
.spec-table th, .spec-table td { border: 1px solid var(--line); padding: 8px 10px; text-align: center; vertical-align: middle; }
.spec-table thead th { background: var(--primary); color: #fff; font-weight: 600; white-space: nowrap; }
.spec-table thead th.rh { background: var(--dark); }
.spec-table th.rh {
  position: sticky; left: 0; z-index: 3;
  width: 128px; min-width: 128px; background: var(--tint);
  color: var(--text); font-weight: 500; text-align: left; line-height: 1.6;
}
.spec-table th.rh[colspan="2"] { width: 214px; min-width: 214px; }
.spec-table th.rh-sub {
  left: 128px; z-index: 2; width: 86px; min-width: 86px;
  background: var(--tint-2); font-size: 12px; text-align: center;
}
.spec-table thead th.rh { z-index: 4; }
.spec-table td { min-width: 76px; color: var(--text); white-space: nowrap; }
.spec-table td.td-span { white-space: normal; text-align: left; line-height: 1.85; color: var(--muted); min-width: 320px; }
.spec-table tbody tr:nth-child(even) td { background: #FCFDFE; }
.spec-table tbody tr:hover td { background: var(--primary-soft); }
.spec-notes { margin-top: 16px; }
.notes-title { color: var(--muted); font-size: 12.5px; font-weight: 600; }
.spec-notes ol { margin-top: 6px; counter-reset: n; }
.spec-notes li { counter-increment: n; position: relative; padding-left: 22px; color: var(--faint); font-size: 12px; line-height: 1.9; }
.spec-notes li::before { content: counter(n) "、"; position: absolute; left: 0; }

/* 相关产品 */
.rel-card { display: block; padding: 16px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); text-align: center; transition: box-shadow .22s ease, transform .22s ease, border-color .22s ease; }
.rel-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: var(--primary-line); }
.rel-thumb {
  height: 142px; display: flex; align-items: center; justify-content: center; margin-bottom: 12px;
  padding: 10px; border-radius: 8px; background: var(--stage); border: 1px solid var(--line-soft);
}
.rel-thumb img { max-height: 122px; width: auto; }
.rel-card b { display: block; font-size: 14px; color: var(--ink); }
.rel-card span { display: block; margin-top: 3px; color: var(--muted); font-size: 12.5px; }

/* ------------------------------------------------------------ 8. 新闻 / 表单 */
.news-filter { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.chip { height: 34px; padding: 0 16px; border: 1px solid var(--line); border-radius: 17px; background: #fff; color: var(--muted); font-size: 13.5px; transition: all .18s ease; }
.chip:hover { border-color: var(--primary-line); color: var(--primary); }
.chip.is-active { background: var(--primary); border-color: var(--primary); color: #fff; }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.news-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: box-shadow .22s ease; }
.news-card:hover { box-shadow: var(--shadow-md); }
.news-card.is-hidden { display: none; }
.news-thumb { position: relative; aspect-ratio: 16 / 9; background: var(--tint-2); overflow: hidden; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-sample { position: absolute; right: 12px; top: 12px; padding: 3px 9px; border-radius: 4px; background: rgba(226, 96, 60, .92); color: #fff; font-size: 11.5px; }
.news-body { padding: 18px 20px 20px; display: flex; flex-direction: column; flex: 1; }
.news-meta { display: flex; align-items: center; gap: 10px; color: var(--faint); font-size: 12.5px; }
.news-cat { padding: 1px 8px; border-radius: 3px; background: var(--tint); color: var(--muted); }
.news-body h3 { margin-top: 10px; font-size: 16px; line-height: 1.5; }
.news-body p { margin-top: 9px; color: var(--muted); font-size: 13.5px; line-height: 1.8; flex: 1; }
.news-body .link-more { margin-top: 14px; }

.contact-card { padding: 24px 20px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); transition: box-shadow .22s ease; }
.contact-card:hover { box-shadow: var(--shadow-md); }
.cc-icon { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; margin-bottom: 14px; border-radius: 10px; background: var(--primary-soft); color: var(--primary); }
.contact-card h3 { font-size: 15px; }
.cc-value { display: block; margin-top: 8px; font-size: 16px; font-weight: 600; color: var(--ink); word-break: break-word; }
a.cc-value:hover { color: var(--primary); }
.cc-note { margin-top: 6px; color: var(--muted); font-size: 12.5px; line-height: 1.7; }

.split-contact { grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 40px; align-items: start; }
.form-intro h2 { font-size: 25px; }
.form-intro p { margin-top: 14px; color: var(--muted); font-size: 14px; line-height: 1.95; }
.form-points { margin-top: 22px; }
.form-points li { display: flex; align-items: center; gap: 9px; color: var(--text); font-size: 13.5px; line-height: 2.2; }
.form-points svg { flex: none; color: var(--ok); }
.enquiry-form { padding: 28px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field-wide { grid-column: 1 / -1; }
.field label { font-size: 13px; color: var(--text); }
.field label em { margin-left: 3px; color: var(--warm); }
.field input, .field select, .field textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: #fff; font-size: 14px; outline: none; transition: border-color .18s ease, box-shadow .18s ease;
}
.field textarea { resize: vertical; line-height: 1.7; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(28, 92, 211, .12); }
.field .is-invalid { border-color: var(--warm); }
.form-foot { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 22px; flex-wrap: wrap; }
.form-privacy { flex: 1; min-width: 220px; color: var(--faint); font-size: 12px; line-height: 1.7; }
.form-status { margin-top: 14px; font-size: 13.5px; }
.form-status.is-ok { color: var(--ok); }
.form-status.is-err { color: var(--warm); }

/* ------------------------------------------------------------ 9. 响应式 */
@media (max-width: 1180px) {
  .site-nav ul { gap: 0; }
  .nav-link { padding: 8px 9px; font-size: 14px; }
  .hh-copy h1 { font-size: 40px; }
  .prod-grid { grid-template-columns: repeat(3, 1fr); }
  .adv-grid { grid-template-columns: repeat(3, 1fr); }
  .why-grid { grid-template-columns: repeat(3, 1fr); }
  .cust-grid { grid-template-columns: repeat(4, 1fr); }
  .series-tabs ul { grid-template-columns: repeat(3, 1fr); }
  .line-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 1024px) {
  .site-nav, .header-cta { display: none; }
  .menu-toggle { display: inline-flex; }
  .header-inner { justify-content: space-between; }
  .foot-main { padding-top: 54px; padding-bottom: 44px; }
  .foot-statement { margin-top: 56px; }
  .foot-word { font-size: clamp(30px, 5.4vw, 48px); }
  /* 窄屏：原图放在顶部，文案落到下方实底上；页眉恢复实底吸顶 */
  body.page-home .site-header { position: sticky; background: rgba(255, 255, 255, .96); backdrop-filter: saturate(1.6) blur(10px); border-bottom-color: var(--line-soft); }
  .home-hero { display: flex; flex-direction: column; background: #F4F8FC; }
  .hero-bg { position: relative; inset: auto; width: 100%; order: -1; }
  .hero-bg img { height: auto; aspect-ratio: 980 / 776; object-position: 50% 50%; }
  .home-hero-inner { grid-template-columns: 1fr; min-height: 0; padding-top: 30px; padding-bottom: 34px; }
  .sys-panel { grid-template-columns: 1fr; padding: 28px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-6 { grid-template-columns: repeat(3, 1fr); }
  .split-2, .split-strength, .split-contact { grid-template-columns: 1fr; }
  .flow-strip, .proc-strip { grid-template-columns: repeat(3, 1fr); gap: 18px; }
  .fs-arrow, .ps-arrow { display: none; }
  .timeline { grid-template-columns: repeat(3, 1fr); gap: 26px 10px; }
  .timeline::before { display: none; }
  .tl-dot { position: static; display: block; margin: 0 auto 6px; transform: none; }
  .profile-split { grid-template-columns: 1fr; gap: 28px; }
  .pd-hero-inner { grid-template-columns: 1fr; }
  .pd-visual { order: -1; }
  .pd-stage img { max-height: 300px; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .page-hero::after { background: linear-gradient(180deg, rgba(245, 249, 252, .84) 0%, rgba(245, 249, 252, .97) 40%); }
  .naming-body { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .section { padding: 52px 0; }
  .section-tight { padding: 42px 0; }
  .container { padding: 0 18px; }
  .sec-head h2 { font-size: 24px; }
  .hh-eyebrow { font-size: 11.5px; letter-spacing: 1.3px; }
  .hh-eyebrow::before { width: 26px; margin-bottom: 16px; }
  .hh-title { margin-top: 18px; font-size: 36px; letter-spacing: -.6px; }
  .hh-desc { margin-top: 18px; font-size: 16px; }
  .hh-actions { margin-top: 26px; gap: 12px 22px; }
  .hh-stats { margin-top: 34px; }
  .hh-stats li { padding: 0 20px; }
  .hh-stats b { font-size: 27px; }
  .hero-copy h1 { font-size: 30px; }
  .hero-sub { font-size: 17px; }
  .hero-chips, .hero-stats { gap: 20px 26px; }
  .feature-bar ul { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px 14px; justify-content: stretch; }
  .feature-bar strong { font-size: 14.5px; }
  .feature-bar li > div span { font-size: 12px; line-height: 1.5; }
  .feature-bar .fb-icon svg { width: 26px; height: 26px; }
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .foot-cols { grid-template-columns: repeat(2, 1fr); gap: 28px 24px; }
  .foot-statement { flex-direction: column; align-items: flex-start; gap: 32px; margin-top: 44px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .cta-copy h2 { font-size: 22px; }
  .cta-band::after { background: linear-gradient(90deg, rgba(20, 32, 50, .96) 0%, rgba(20, 32, 50, .9) 70%, rgba(20, 32, 50, .78) 100%); }
  .dl-wrap { grid-template-columns: 1fr; }
  .dl-visual { display: none; }
  .quote-band { padding: 52px 0; }
  .qb { grid-template-columns: 1fr; }
  .qb-quote { padding-right: 0; }
  .qb-text { font-size: 21px; }
  .qb-side { margin-top: 36px; padding-left: 0; padding-top: 34px; border-left: 0; border-top: 1px solid rgba(22, 32, 46, .17); }
  .pd-copy h1 { font-size: 27px; }
  .pd-specs { grid-template-columns: 1fr; }
  .feat-grid { grid-template-columns: 1fr; }
  .app-grid { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
  .mobile-nav ul { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .grid-4, .grid-6 { grid-template-columns: 1fr; }
  .cust-grid { grid-template-columns: repeat(2, 1fr); }
  .series-tabs ul { grid-template-columns: 1fr; }
  .prod-grid, .adv-grid, .why-grid, .news-grid, .line-grid { grid-template-columns: 1fr; }
  .flow-strip, .proc-strip { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr; }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .app-grid { grid-template-columns: 1fr; }
  .sys-legend { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 12px; }
  .sys-pin { width: 18px; height: 18px; font-size: 10.5px; box-shadow: 0 1px 5px rgba(28, 92, 211, .4), 0 0 0 2px rgba(255, 255, 255, .95); }
  .hh-title { font-size: 31px; }
  .hh-desc { font-size: 15.5px; }
  .hh-stats li { padding: 0 13px; }
  .hh-stats b { font-size: 23px; }
  .hh-stats span { margin-top: 6px; font-size: 10.5px; letter-spacing: .8px; }
  /* 窄屏按钮整行排列，避免 nowrap 文案撑破容器 */
  .hero-actions, .cta-actions { flex-direction: column; align-items: stretch; gap: 10px; }
  .hero-actions .btn, .cta-actions .btn { width: 100%; }
  /* 首屏是文字式 CTA，左对齐堆叠即可 */
  .hh-actions { flex-direction: column; align-items: flex-start; gap: 16px; }
  .feature-bar ul { grid-template-columns: 1fr; gap: 16px; }
  /* 窄屏用原生滑动，隐藏箭头与渐隐 */
  .rail-nav { display: none; }
  .model-carousel::before, .model-carousel::after { display: none; }
  .hero-copy h1 { font-size: 26px; }
  .foot-bar .container { flex-direction: column; align-items: flex-start; gap: 16px; padding: 18px; }
  .foot-word { font-size: 30px; }
  .back-top { right: 14px; bottom: 16px; }
}

@media print {
  .site-header, .site-footer, .cta-band, .back-top, .pd-subnav, .crumb { display: none !important; }
  .section { padding: 18px 0; }
  .spec-table { min-width: 0; font-size: 10px; }
  .table-scroll { overflow: visible; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}