/* ============================================
   华夏磁电子 HUAXIAMAG - 企业门户设计系统 v2
   100% 贴合手绘原型 / 实景素材设计
   ============================================ */

/* --- Design Tokens (从原型图和Logo提取) --- */
:root {
  --primary: #C8102E;           /* 品牌红 (Logo实际色) */
  --primary-dark: #A30D24;
  --primary-light: #E8394F;
  --primary-soft: rgba(200,16,46,.08);

  --dark: #1a1a2e;              /* 导航/页脚深色 */
  --dark-2: #16162a;
  --text-primary: #1a1a1e;
  --text-secondary: #4a4a52;
  --text-muted: #888893;

  --bg-white: #ffffff;
  --bg-light: #f7f8fa;
  --bg-gray: #eeeff3;

  --border: #e4e4e8;
  --shadow-sm: 0 2px 6px rgba(0,0,0,.06);
  --shadow-md: 0 6px 20px rgba(0,0,0,.10);
  --shadow-lg: 0 12px 36px rgba(0,0,0,.14);

  --radius: 6px;
  --radius-lg: 12px;

  --max-width: 1400px;          /* 内容宽度上限（仅超大屏触发） */
  --content-ratio: 86%;         /* 内容占视口比例，保证留白比例恒定 */
  --header-height: 76px;
  --transition: .25s ease;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--text-primary); background: var(--bg-white);
  line-height: 1.6; font-size: 15px; -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: color var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button, input, textarea, select { font: inherit; border: none; outline: none; }

/* --- Buttons --- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 30px; border-radius: 4px; font-weight: 600; font-size: 14px;
  cursor: pointer; transition: all var(--transition); border: none;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-pill { border-radius: 50px; padding: 8px 22px; font-size: 13px; }
.btn-sm { padding: 8px 18px; font-size: 13px; }

/* --- Layout Container (内容宽度=视口86%，上限1400px，留白比例恒定) --- */
.container { width: var(--content-ratio); max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* --- Header / Navigation --- */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--header-height); transition: all .35s ease;
}
/* 默认透明态（内页浅色banner透明 + 深色字） */
.header {
  background: transparent;
  backdrop-filter: none;
  box-shadow: none;
}
.header .nav-list a { color: var(--text-primary); }
.header .nav-list a:hover,
.header .nav-list a.active { color: var(--primary); background: rgba(200,16,46,.06); }
.header .header-right { color: var(--text-muted); }
.header .logo img { filter: none; }
.header .menu-toggle span { background: var(--text-primary); }

/* 首页透明态（深色hero透明 + 白字） */
.header.transparent {
  background: transparent;
  backdrop-filter: none;
  box-shadow: none;
}
.header.transparent .nav-list a { color: rgba(255,255,255,.88); }
.header.transparent .nav-list a:hover { color: #fff; background: rgba(255,255,255,.12); }
.header.transparent .nav-list a.active { color: var(--primary); background: rgba(255,255,255,.15); }
.header.transparent .header-right { color: rgba(255,255,255,.7); }
.header.transparent .logo img { filter: brightness(0) invert(1); }
.header.transparent .menu-toggle span { background: #fff; }

/* hover 透明态时显示白底 */
.header:hover {
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(14px);
  box-shadow: 0 2px 16px rgba(0,0,0,.08);
}
.header:hover .nav-list a { color: var(--text-primary); }
.header:hover .nav-list a:hover,
.header:hover .nav-list a.active { color: var(--primary); background: rgba(200,16,46,.06); }
.header:hover .header-right { color: var(--text-muted); }
.header:hover .logo img { filter: none; }
.header:hover .menu-toggle span { background: var(--text-primary); }

/* 白底固态（滚动后 / 非首页内页默认） */
.header.solid {
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(14px);
  box-shadow: 0 2px 16px rgba(0,0,0,.08);
}
.header.solid .nav-list a { color: var(--text-primary); }
.header.solid .nav-list a:hover,
.header.solid .nav-list a.active { color: var(--primary); background: rgba(200,16,46,.06); }
.header.solid .header-right { color: var(--text-muted); }
.header.solid .logo img { filter: none; }
.header.solid .menu-toggle span { background: var(--text-primary); }
.header-inner { width: 98%; max-width: 1680px; margin: 0 auto; padding: 0 20px; height: 100%; display: flex; align-items: center; justify-content: space-between; }
.logo img { height: 44px; width: auto; }
.nav-list { display: flex; align-items: center; gap: 2px; }
.nav-list a {
  display: block; padding: 10px 18px;
  font-size: 16px; font-weight: 700; border-radius: 4px; transition: all var(--transition);
}
.nav-list a:hover, .nav-list a.active { }
.nav-list a.active::after {
  content: ''; display: block; height: 2px; background: var(--primary);
  margin-top: 4px; border-radius: 1px;
}
.header-right { display: flex; align-items: center; gap: 16px; font-size: 13px; }

/* 导航下拉菜单 */
.nav-dropdown { position: relative; }
.nav-dropdown .dropdown-menu { display: none; position: absolute; top: 100%; left: 0; background: #fff; border-radius: 6px; box-shadow: 0 4px 16px rgba(0,0,0,.12); min-width: 200px; padding: 6px 0; z-index: 100; }
.nav-dropdown:hover .dropdown-menu { display: block; }
.nav-dropdown .dropdown-menu a { display: block; padding: 8px 16px; font-size: 13px; color: var(--text-primary); text-decoration: none; border-radius: 0; }
.nav-dropdown .dropdown-menu a:hover { background: rgba(200,16,46,.06); color: var(--primary); }

/* 产品中心巨型下拉 */
.nav-mega { position: relative; }
.nav-mega .dropdown-mega { display: none; position: absolute; top: 100%; left: 0; background: #fff; box-shadow: 0 4px 16px rgba(0,0,0,.12); border-radius: 6px; padding: 20px 24px; z-index: 99; min-width: 560px; }
.nav-mega:hover .dropdown-mega { display: block; }
.nav-mega .dropdown-mega-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.nav-mega .mega-col h4 { font-size: 14px; font-weight: 700; color: var(--primary); margin-bottom: 10px; white-space: nowrap; }
.nav-mega .mega-col a { display: block; font-size: 12px; color: var(--text-primary); text-decoration: none; padding: 4px 0; white-space: nowrap; }
.nav-mega .mega-col a:hover { color: var(--primary); }
.header-right .lang-switch { display: inline-flex; align-items: center; gap: 2px; cursor: pointer; color: var(--text-primary); }
.header-right .lang-switch .lang-item { color: inherit; text-decoration: none; padding: 4px 8px; border-radius: 3px; transition: all var(--transition); cursor: pointer; font-weight: 500; }
.header-right .lang-switch .lang-item:hover { color: var(--primary); background: rgba(200,16,46,.06); }
.header-right .lang-switch .lang-item.active { color: var(--primary); font-weight: 700; position: relative; }
.header-right .lang-switch .lang-item.active::after { content: ''; position: absolute; left: 8px; right: 8px; bottom: 0; height: 2px; background: var(--primary); border-radius: 1px; }
.header-right .lang-switch .lang-sep { color: inherit; opacity: 0.4; padding: 0 2px; user-select: none; }
.header-right .search-icon { display: inline-flex; align-items: center; justify-content: center; cursor: pointer; color: var(--text-primary); transition: color var(--transition); }
.header-right .search-icon img { width: 18px; height: 18px; opacity: 0.78; transition: all var(--transition); }
.header-right .search-icon:hover { color: var(--primary); }
.header-right .search-icon:hover img { opacity: 1; }
/* 透明 header 下（首页）反白显示 */
.header.transparent .header-right .lang-switch { color: rgba(255,255,255,.88); }
.header.transparent .header-right .search-icon { color: rgba(255,255,255,.88); }
.header.transparent .header-right .search-icon img { filter: invert(1) brightness(1.8); opacity: 0.85; }
/* 鼠标 hover header 后回到实色（深色） */
.header.transparent:hover .header-right .lang-switch { color: var(--text-primary); }
.header.transparent:hover .header-right .search-icon { color: var(--text-primary); }
.header.transparent:hover .header-right .search-icon img { filter: none; opacity: 0.78; }

/* solid 滚动后强制覆盖 transparent 样式（特异性相同，靠后胜出） */
.header.solid .header-right .lang-switch { color: var(--text-primary); }
.header.solid .header-right .search-icon { color: var(--text-primary); }
.header.solid .header-right .search-icon img { filter: none; opacity: 0.78; }
.menu-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.menu-toggle span { display: block; width: 22px; height: 2px; border-radius: 2px; transition: all .3s; }

@media (max-width: 960px) {
  .menu-toggle { display: flex; }
  .nav-list {
    position: fixed; top: var(--header-height); left: 0; right: 0; bottom: 0;
    background: var(--dark); flex-direction: column; padding: 20px 0; overflow-y: auto;
    transform: translateX(100%); transition: transform .35s ease;
  }
  .nav-list.open { transform: translateX(0); }
  .nav-list a { padding: 16px 24px; font-size: 16px; border-bottom: 1px solid rgba(255,255,255,.06); border-radius: 0; }
}

/* --- Footer (深色) --- */
.footer { background: var(--dark); color: rgba(255,255,255,.7); padding-top: 56px; }
/* 页脚黑底部分：宽度更宽（缩进减小），独立于中间内容区 */
.footer .container { width: 98%; max-width: 1680px; }
/* 整行以中心为居中；列宽 fr 等比 + gap 按比例，拉伸时比例恒定 */
.footer-main {
  display: grid; grid-template-columns: 2.7fr 1fr 1.1fr 0.7fr 0.8fr 2.2fr 0.9fr 1fr;
  column-gap: clamp(10px, 0.8%, 18px); row-gap: 32px;
  padding-bottom: 40px; align-items: start;
}
.footer-brand { white-space: nowrap; padding-right: 40px; }
.footer-brand .logo img { height: 56px; }
.footer-col h4 { color: #fff; font-size: 14px; font-weight: 600; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col:nth-child(4) { padding-right: 6px; }
.footer-col:nth-child(5) { padding-left: 6px; padding-right: 6px; }
.footer-col:nth-child(6) { padding-left: 6px; }
.footer-col:nth-child(7) { padding-left: 20px; }
.footer-col ul li a { font-size: 12.5px; color: rgba(255,255,255,.55); }
.footer-col ul li a:hover { color: var(--primary-light); }
.footer .contact-item { display: flex; align-items: flex-start; gap: 8px; margin-bottom: 10px; font-size: 12.5px; color: rgba(255,255,255,.6); white-space: nowrap; }
.footer .contact-item .icon { color: var(--primary); flex-shrink: 0; display: flex; align-items: center; }
.footer .contact-item .icon img { width: 16px; height: 16px; object-fit: contain; filter: brightness(0) invert(1); }
.btn-publish { background: var(--primary); color: #fff; padding: 8px 18px; border-radius: 4px; font-size: 13px; font-weight: 600; display: inline-flex; align-items: center; gap: 4px; text-decoration: none; }
.footer .btn-publish { margin-top: 12px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.07); padding: 18px 0;
  display: flex; align-items: center; justify-content: space-between; font-size: 12px; color: rgba(255,255,255,.4);
}
.footer-bottom a { color: rgba(255,255,255,.4); }

@media (max-width: 1024px) { .footer-main { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 600px) { .footer-main { grid-template-columns: 1fr; } .footer-bottom { flex-direction: column; gap: 12px; } }

/* --- 联系我们子导航（绿色 + 红激活态） --- */
.contact-subnav { background: rgba(0,0,0,.08); }
.contact-subnav-inner { width: var(--content-ratio); max-width: var(--max-width); margin: 0 auto; padding: 6px 24px; display: flex; gap: 4px; }
.contact-subnav a { display: block; padding: 10px 28px; border-radius: 6px; color: var(--text-secondary); font-size: 14px; font-weight: 500; transition: all .2s ease; }
.contact-subnav a:hover { background: rgba(200,16,46,.08); color: var(--primary); }
.contact-subnav a.active { background: var(--primary); color: #fff; font-weight: 700; }

/* --- Inner Page Banner (共用) --- */
.page-banner {
  margin-top: 0; position: relative; width: 100% !important; padding: 0 !important;
  display: flex; align-items: center; justify-content: center;
}
.page-banner-bg { width: 100%; aspect-ratio: 6/1; overflow: hidden; }
.page-banner-bg img { width: 100%; height: 100%; object-fit: cover; display: block; }
.page-banner-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(255,255,255,.0) 0%, rgba(255,255,255,.15) 100%); }
.page-banner-content { position: absolute; z-index: 2; text-align: center; top: 50%; left: 50%; transform: translate(-50%,-50%); }
.page-banner-content .en { display: block; font-size: 14px; letter-spacing: 6px; color: var(--text-secondary); margin-bottom: 6px; text-transform: uppercase; font-weight: 500; }
.page-banner-content h1 { font-size: 34px; font-weight: 700; color: var(--text-primary); letter-spacing: 4px; }

.breadcrumb { padding: 30px 0; font-size: 13px; color: var(--text-muted); }
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .breadcrumb-home { width: 14px; height: 14px; vertical-align: -2px; display: inline-block; }

/* ============================================
   HOME PAGE
   ============================================ */

/* Hero Section - 直接展示成品原图(1920x869, 比例2.21:1)，不做拉伸裁切 */
.hero {
  position: relative; overflow: hidden; background: #1a1a2e;
}
.hero-slides { position: relative; }
.hero-slide { position: absolute; inset: 0; opacity: 0; transition: opacity .8s ease; }
.hero-slide.active { position: relative; opacity: 1; }
.hero-slide img { width: 100%; height: auto; display: block; }
.hero-dots {
  position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 10px; z-index: 5;
}
.hero-dots .hdot {
  width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.45);
  cursor: pointer; transition: all .25s ease;
}
.hero-dots .hdot:hover { background: rgba(255,255,255,.8); }
.hero-dots .hdot.active { background: var(--primary); transform: scale(1.2); }

/* Section common title */
.section-title-row { text-align: center; margin-bottom: 48px; }
.section-title-row h2 { font-size: 30px; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; letter-spacing: 2px; }
.section-title-row .accent-bar { width: 28px; height: 3px; background: var(--primary); margin: 12px auto 16px; border-radius: 2px; }
.section-title-row p { color: var(--text-muted); font-size: 14px; letter-spacing: 1px; }

/* Industry Solutions (行业成熟传感器解决方案) - 左图联动轮播 + 右侧 2x2 分类 */
.industry-section { padding: 80px 0; background: #fff; }
/* 左右两列等高：左侧图填满整行(上=右侧卡片上沿, 下=了解更多下沿)，右侧 2x2+CTA 决定行高 */
.industry-grid {
  display: grid; grid-template-columns: 1.15fr 1fr; gap: 40px;
  align-items: stretch;
}

/* 左侧联动轮播：高度随右侧整体，图片 cover 填充不变形 */
.industry-slider { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); background: var(--bg-gray); min-height: 340px; }
.slider-stage { position: absolute; inset: 0; }
.slider-slide { position: absolute; inset: 0; opacity: 0; transition: opacity .7s ease; }
.slider-slide.active { opacity: 1; }
.slider-slide img { width: 100%; height: 100%; object-fit: cover; display: block; }
.slider-dots {
  position: absolute; bottom: 14px; left: 0; right: 0;
  display: flex; justify-content: center; gap: 8px; z-index: 5;
}
.slider-dots .dot {
  width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.55);
  cursor: pointer; transition: all var(--transition); border: none; padding: 0;
}
.slider-dots .dot:hover { background: rgba(255,255,255,.85); }
.slider-dots .dot.active { background: var(--primary); transform: scale(1.15); }

/* 右侧 2x2 分类卡片（块状、撑满左侧高度、内部垂直居中） */
.industry-tags { display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; gap: 16px; height: 100%; }
.industry-tag-item {
  background: #fff; border-radius: var(--radius); padding: 22px 20px;
  box-shadow: var(--shadow-sm); transition: all var(--transition);
  border: 1px solid var(--border); display: flex; flex-direction: column; justify-content: center; gap: 10px;
  cursor: pointer; color: var(--text-primary); height: 100%; text-decoration: none;
}
.industry-tag-item:hover { box-shadow: var(--shadow-md); border-color: var(--primary); transform: translateY(-2px); }
/* 激活态：红色实底白字（贴合原型高亮卡片） */
.industry-tag-item.active {
  background: var(--primary); border-color: var(--primary);
  box-shadow: 0 6px 18px rgba(200,16,46,.20);
}
.industry-tag-item.active h4,
.industry-tag-item.active p { color: #fff; }
.industry-tag-item .icon {
  width: 40px; height: 40px; background: transparent; border-radius: 8px;
  display: flex; align-items: center; justify-content: center; font-size: 22px;
  transition: all var(--transition);
}
.industry-tag-item.active .icon { background: transparent; }
.industry-tag-item h4 { font-size: 16px; font-weight: 700; line-height: 1.3; transition: color var(--transition); }
.industry-tag-item p { font-size: 13px; color: var(--text-secondary); line-height: 1.55; transition: color var(--transition); }
.industry-cta { grid-column: 1 / -1; display: flex; justify-content: flex-end; margin-top: 8px; }

/* Product Series (按测量类型分类 - 4大类，严格贴合原型) */
.products-section { padding: 80px 0; background: var(--bg-light); }
.product-series-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; align-items: stretch; }
.product-series-card {
  background: #fff; border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: all var(--transition); display: flex; flex-direction: column;
  cursor: pointer; height: 100%; position: relative;
}
.product-series-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
/* 标题 + 右上角小图标 */
.product-series-card .card-head { display: flex; align-items: center; justify-content: space-between; padding: 18px 20px 12px; }
.product-series-card .card-head h3 { font-size: 16px; font-weight: 700; color: var(--text-primary); }
.product-series-card .head-icon {
  width: 28px; height: 28px; background: transparent; color: var(--primary);
  display: flex; align-items: center; justify-content: center; font-size: 16px;
}
/* 图片区固定高度，保证4张卡片图片区域完全等高对齐 */
.product-series-card .img-wrap { height: 240px; background: #fff; display: flex; align-items: center; justify-content: center; margin: 0 16px; border-radius: var(--radius); overflow: hidden; }
.product-series-card .img-wrap img { max-width: 100%; max-height: 100%; object-fit: contain; transition: transform .4s ease; }
.product-series-card:hover .img-wrap img { transform: scale(1.04); }
/* 灰色实线分隔 */
.product-series-card .dashed-line { height: 0; border-top: 1px solid var(--border); margin: 16px 20px 14px; }
/* 描述区自然高度，文字短的卡片底部留白 */
.product-series-card .desc { font-size: 12.5px; color: var(--text-secondary); line-height: 1.6; padding: 0 20px 22px; flex: 1; }

/* Hover 浮层：红色半透底 + 白色虚线边框 + 白字（贴合点击效果原型） */
.product-series-card .hover-detail {
  position: absolute; inset: 0; display: none; flex-direction: column;
  background: rgba(200,16,46,.92);
  border: 1.5px solid rgba(255,255,255,.55);
  border-radius: var(--radius-lg);
  padding: 18px 20px; color: #fff;
  animation: fadeInUp .25s ease forwards;
}
.product-series-card:hover .hover-detail { display: flex; }
.product-series-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.product-series-card .hover-detail .detail-title { font-size: 16px; font-weight: 700; margin-bottom: 10px; color: #fff; line-height: 1.3; }
/* 描述区固定最小高度（容纳最长描述），保证虚线位置各卡一致 */
.product-series-card .hover-detail .detail-text { font-size: 12.5px; line-height: 1.65; color: #fff; margin-bottom: 12px; min-height: 100px; }
/* 一级产品列表：紧跟描述（不贴底），虚线位置固定 */
.product-series-card .hover-detail .detail-products {
  padding-top: 10px;
  border-top: 1px solid rgba(255,255,255,.35);
}
.product-series-card .hover-detail .product-label {
  font-size: 11px; letter-spacing: 2px; color: rgba(255,255,255,.78);
  margin-bottom: 6px; text-transform: uppercase;
}
.product-series-card .hover-detail .detail-products ul { list-style: none; padding: 0; margin: 0; }
.product-series-card .hover-detail .detail-products li {
  font-size: 12.5px; line-height: 1.75; color: #fff; padding: 1px 0 1px 16px; position: relative;
}
/* 圆点代替序号 */
.product-series-card .hover-detail .detail-products li::before {
  content: ''; position: absolute; left: 2px; top: 50%; transform: translateY(-50%);
  width: 5px; height: 5px; border-radius: 50%; background: #fff;
}

/* Core Advantages (5个深色卡片，用素材图) */
.advantages-section { padding: 80px 0; background: #fff; }
.advantages-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.advantage-card {
  border-radius: var(--radius-lg); overflow: hidden; position: relative;
  aspect-ratio: 3/4.6; transition: all var(--transition); cursor: pointer;
  background: var(--dark);
}
.advantage-card .bg { position: absolute; inset: 0; }
.advantage-card .bg img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.advantage-card:hover .bg img { transform: scale(1.06); }
.advantage-card .bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.85) 0%, rgba(0,0,0,.2) 50%, transparent 100%);
}
.advantage-card .body { position: relative; z-index: 2; padding: 22px 18px; height: 100%; display: flex; flex-direction: column; justify-content: flex-end; color: #fff; }
.advantage-card .body h3 { font-size: 15px; font-weight: 700; margin-bottom: 6px; }
.advantage-card .body p { font-size: 12px; opacity: .82; line-height: 1.5; }
.advantage-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

/* Service Network (左侧标题+按钮 / 右侧大地图+缩放 / 底部3文本块) */
.network-section { padding: 80px 0; background: var(--bg-light); }
.network-card {
  display: grid; grid-template-columns: 0.55fr 2.6fr; gap: 20px; align-items: flex-start;
}
.network-info h2 { font-size: 26px; font-weight: 700; line-height: 1.4; margin-bottom: 18px; }
.network-info .btn { font-size: 15px; }

/* 右侧整列：地图 + 文本块 */
.network-right { min-width: 0; display: flex; flex-direction: column; }

/* 地图视口 */
.network-map-wrap { min-width: 0; }
.map-viewport {
  position: relative; overflow: hidden; border-radius: var(--radius-lg);
  background: #fff; box-shadow: var(--shadow-sm);
  aspect-ratio: 16/9; cursor: grab; user-select: none;
}
.map-viewport:active { cursor: grabbing; }
.map-content {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  transition: transform .15s ease; transform-origin: center center;
}
.map-content img { width: 100%; height: 100%; object-fit: contain; user-select: none; pointer-events: none; }

/* 缩放控件（左上角，仅 +/- 重置） */
.map-controls-zoom {
  position: absolute; top: 14px; left: 14px; z-index: 5;
  display: flex; flex-direction: column; gap: 6px;
}
.mc-btn {
  width: 32px; height: 32px; border-radius: 6px; border: none; background: rgba(255,255,255,.92);
  box-shadow: 0 1px 4px rgba(0,0,0,.15); cursor: pointer; font-size: 16px; font-weight: 600;
  color: var(--text-primary); display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.mc-btn:hover { background: var(--primary); color: #fff; transform: scale(1.05); }

.map-hint { text-align: center; font-size: 12px; color: var(--text-muted); margin-top: 12px; }

/* 三个纯文本块：图片正下方，随图宽度居中 */
.network-stats-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 20px; padding: 0 8px; text-align: center; }
.stat-block { text-align: center; }
.stat-block .stat-num { font-size: 18px; font-weight: 800; color: var(--primary); margin-bottom: 6px; }
.stat-block .stat-desc { font-size: 14px; color: var(--text-secondary); }

/* Partners / Cases */
.partners-section { padding: 80px 0; background: #fff; text-align: center; overflow: hidden; }
/* 累计服务客户超过 400 家 */
.partners-summary {
  display: flex; align-items: baseline; justify-content: center; gap: 6px;
  margin: 28px 0 36px;
}
.partners-summary .ps-text { font-size: 18px; color: var(--text-primary); font-weight: 600; }
.partners-summary .ps-num { font-size: 38px; font-weight: 800; color: var(--primary); line-height: 1; }

/* 3 行循环滚动品牌墙 + 两侧渐变遮罩 */
.partner-marquee { display: flex; flex-direction: column; gap: 14px; overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.marquee-track { display: flex; width: max-content; animation: marquee-scroll 72s linear infinite; }
.marquee-track.track-2 { animation-direction: reverse; }
.marquee-row { display: flex; gap: 16px; padding-right: 16px; flex-shrink: 0; }
.partner-marquee:hover .marquee-track { animation-play-state: paused; }

@keyframes marquee-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* logo 图片样式 */
.partner-logo-item {
  width: 160px; height: 100px; background: #fff; border-radius: 10px;
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition); flex-shrink: 0; overflow: hidden;
}
.partner-logo-item img { width: 100%; height: 100%; object-fit: contain; transition: transform var(--transition); padding: 0; }
.partner-logo-item:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.partner-logo-item:hover img { transform: scale(1.05); }

/* ============================================
   PRODUCTS PAGE - 多维筛选 + 产品网格
   ============================================ */
.products-page { padding: 48px 0 80px; }
.products-layout { display: grid; grid-template-columns: 280px 1fr; gap: 24px; }
.filter-sidebar { background: #fff; border-radius: var(--radius-lg); padding: 24px; box-shadow: var(--shadow-sm); height: fit-content; position: sticky; top: calc(var(--header-height) + 24px); }
.filter-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; padding-bottom: 14px; border-bottom: 1px solid var(--border); }
.filter-header h3 { font-size: 15px; font-weight: 700; display: flex; align-items: center; gap: 6px; }
.filter-header h3 img { width: 18px; height: 18px; object-fit: contain; }
.filter-reset { font-size: 12px; color: var(--primary); cursor: pointer; }
.filter-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.filter-tag { display: inline-flex; align-items: center; gap: 4px; padding: 3px 10px; background: rgba(200,16,46,.06); color: var(--primary); border: 1px solid rgba(200,16,46,.2); border-radius: 3px; font-size: 12px; }
.filter-tag .x { cursor: pointer; opacity: .6; padding: 0 2px; }
.filter-tag .x:hover { opacity: 1; }
.filter-group { margin-bottom: 14px; }
.filter-group-title { font-size: 13px; font-weight: 700; color: var(--text-primary); padding: 10px 0; display: flex; align-items: center; justify-content: space-between; cursor: pointer; border-bottom: 1px solid var(--border); user-select: none; }
.filter-group-title .caret { font-size: 10px; color: var(--text-muted); transition: transform .2s; }
.filter-group.collapsed .caret { transform: rotate(-90deg); }
.filter-group.collapsed .filter-options { display: none; }
.filter-options label { display: flex; align-items: center; gap: 8px; padding: 6px 0; font-size: 13px; color: var(--text-secondary); cursor: pointer; }
.filter-options label em { margin-left: auto; font-style: normal; color: var(--text-muted); font-size: 12px; }
.filter-options input[type="checkbox"] { accent-color: var(--primary); width: 14px; height: 14px; }
.filter-options input[type="radio"] { accent-color: var(--primary); width: 14px; height: 14px; }
.filter-options label:has(input:checked) span { color: var(--primary); font-weight: 600; }

.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.product-card-v2 { background: #fff; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: all var(--transition); border: 1px solid transparent; display: flex; flex-direction: column; height: 580px; cursor: pointer; }
.product-card-v2:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--primary); }
.product-card-v2 .tag-label { display: inline-block; padding: 4px 12px; background: var(--primary-soft); color: var(--primary); border-radius: 4px; font-size: 11px; font-weight: 600; margin: 14px 16px 0; align-self: flex-start; }
.product-card-v2 .img-wrap { padding: 12px; background: var(--bg-light); margin: 10px 16px 0; border-radius: var(--radius); display: flex; align-items: center; justify-content: center; aspect-ratio: 16 / 9; }
.product-card-v2 .img-wrap img { max-width: 100%; max-height: 100%; object-fit: contain; }
.product-card-v2 .body { padding: 16px 18px 20px; flex: 1; display: flex; flex-direction: column; }
.product-card-v2 .body h3 { font-size: 15px; font-weight: 700; margin-bottom: 8px; }
.product-card-v2 .body .desc { font-size: 13px; color: var(--text-secondary); line-height: 1.55; margin-bottom: 12px; flex: 1; overflow: hidden; }
.product-card-v2 .body .info-row { display: flex; align-items: baseline; flex-wrap: wrap; gap: 6px; margin-bottom: 6px; font-size: 12px; }
.product-card-v2 .body .info-row-type { margin-top: auto; padding-top: 8px; border-top: 1px dashed #eee; }
.product-card-v2 .body .info-label { color: var(--text-muted); font-weight: 500; }
.product-card-v2 .body .info-tag { padding: 2px 8px; background: var(--bg-light); border-radius: 3px; font-size: 11px; color: var(--text-secondary); }
.product-card-v2 .body .info-row-type .info-tag { background: #EAEAEA; color: var(--text-secondary); }
.product-card-v2 .body .info-row-domain { margin-bottom: 18px; }
.product-card-v2 .body .info-row-domain .info-tag { background: #F5EDE0; color: var(--text-secondary); }
.product-card-v2 .body .link-more { display: inline-flex; align-items: center; justify-content: center; gap: 6px; color: var(--primary); font-size: 13px; font-weight: 600; margin-top: auto; padding: 9px 16px; border: 1px solid var(--primary); border-radius: 6px; align-self: flex-start; transition: all var(--transition); }
.product-card-v2 .body .link-more:hover { background: var(--primary); color: #fff; }

/* ============================================
   PRODUCT DETAIL PAGE
   ============================================ */
.pd-banner { height: 320px; background: linear-gradient(135deg, #d4e4f7 0%, #c0d8f0 100%); }
.pd-banner .breadcrumb { padding-top: calc(var(--header-height) + 20px); }
.pd-intro { display: grid; grid-template-columns: 1fr 360px; gap: 40px; padding: 48px 0; }
.pd-thumbnails { display: flex; flex-direction: column; gap: 12px; margin-bottom: 24px; }
.pd-thumbnails .row { display: flex; gap: 12px; }
.pd-thumb { width: 110px; height: 110px; border-radius: var(--radius); background: var(--bg-light); padding: 12px; display: flex; align-items: center; justify-content: center; }
.pd-thumb img { max-width: 100%; max-height: 100%; object-fit: contain; }
.pd-info h1 { font-size: 28px; font-weight: 800; margin-bottom: 16px; }
.pd-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.pd-tag { padding: 5px 14px; background: var(--primary-soft); color: var(--primary); border-radius: 4px; font-size: 12px; font-weight: 600; }
.pd-section { margin-bottom: 24px; }
.pd-section-title { font-size: 14px; font-weight: 700; color: var(--primary); letter-spacing: 1px; margin-bottom: 10px; }
.pd-section p { color: var(--text-secondary); line-height: 1.8; }
.pd-features { padding: 0; }
.pd-features li { display: flex; align-items: flex-start; gap: 8px; padding: 6px 0; font-size: 14px; color: var(--text-secondary); }
.pd-features li::before { content: '✓'; color: var(--primary); font-weight: 700; }
.pd-params { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; background: var(--bg-light); padding: 16px; border-radius: var(--radius); }
.pd-params .item { display: flex; justify-content: space-between; padding: 4px 0; font-size: 13px; }
.pd-params .item .k { color: var(--text-muted); }
.pd-params .item .v { color: var(--text-primary); font-weight: 600; }
.pd-sidebar { display: flex; flex-direction: column; gap: 20px; }
.pd-side-card { background: #fff; border-radius: var(--radius-lg); padding: 22px; box-shadow: var(--shadow-sm); }
.pd-side-card h3 { font-size: 15px; font-weight: 700; color: var(--primary); margin-bottom: 14px; letter-spacing: 1px; }
.pd-apps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.pd-app { padding: 8px 12px; background: var(--bg-light); border-radius: var(--radius); font-size: 12px; text-align: center; }
.pd-solutions .item { padding: 12px 14px; background: var(--bg-light); border-radius: var(--radius); margin-bottom: 10px; font-size: 13px; color: var(--text-secondary); }
.pd-solutions .item strong { color: var(--primary); display: block; margin-bottom: 4px; }

.pd-selector { padding: 48px 0; background: var(--bg-light); }
.pd-selector h2 { font-size: 24px; font-weight: 700; margin-bottom: 20px; }
.pd-table { width: 100%; background: #fff; border-collapse: collapse; box-shadow: var(--shadow-sm); border-radius: var(--radius-lg); overflow: hidden; }
.pd-table th, .pd-table td { padding: 12px 16px; text-align: center; font-size: 13px; border-bottom: 1px solid var(--border); }
.pd-table th { background: var(--bg-light); font-weight: 700; color: var(--text-primary); }
.pd-table tbody tr:hover { background: #fffaf0; }

.pd-other { padding: 48px 0; }
.pd-other-item { display: grid; grid-template-columns: 240px 1fr 320px; gap: 32px; padding: 24px 0; border-bottom: 1px solid var(--border); }
.pd-other-item:last-child { border-bottom: none; }
.pd-other-item .img { width: 220px; height: 180px; background: var(--bg-light); border-radius: var(--radius); padding: 16px; display: flex; align-items: center; justify-content: center; }
.pd-other-item .img img { max-width: 100%; max-height: 100%; object-fit: contain; }
.pd-other-item .info h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.pd-other-item .info h3 .tag { display: inline-block; margin-left: 8px; padding: 2px 8px; background: var(--primary-soft); color: var(--primary); border-radius: 3px; font-size: 11px; font-weight: 600; vertical-align: middle; }
.pd-other-item .info ul li { font-size: 13px; color: var(--text-secondary); padding: 4px 0; line-height: 1.6; }
.pd-other-item .params-card { background: var(--bg-light); border-radius: var(--radius); padding: 16px; }
.pd-other-item .params-card .row { display: flex; justify-content: space-between; padding: 5px 0; font-size: 13px; border-bottom: 1px dashed var(--border); }
.pd-other-item .params-card .row:last-child { border-bottom: none; }
.pd-other-item .params-card .row .k { color: var(--text-muted); }

/* ----- Product Detail V2 - 卡片布局 ----- */

/* 外层分组标题 */
.pdv2-section-title-out { padding: 24px 0 40px 8px; max-width: var(--container-width); margin: 0 auto; }
.pdv2-section-title-out .en { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 2px; color: var(--text-muted); margin-right: 14px; vertical-align: middle; }
.pdv2-section-title-out .cn { display: inline-block; font-size: 20px; font-weight: 800; color: var(--primary); vertical-align: middle; }

/* 通用产品卡片 */
.pdv2-card-main { background: #fff; border-radius: var(--radius-lg); box-shadow: 0 2px 12px rgba(0,0,0,.08); padding: 36px 0 40px; margin: 0 0 48px; border: 1px solid #d0d4da; }
.pdv2-card-main > .container { max-width: none; padding: 0; }
.pdv2-card-top { display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: center; margin-bottom: 32px; padding-bottom: 28px; border-bottom: 1px solid var(--border); }
.pdv2-card-meta { color: var(--text-muted); font-size: 13px; margin-bottom: 12px; }
.pdv2-card-title { font-size: 30px; font-weight: 800; color: var(--primary); letter-spacing: 1px; margin-bottom: 16px; }
.pdv2-card-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.pdv2-card-pill { padding: 6px 14px; background: var(--primary); color: #fff; border-radius: 4px; font-size: 12px; font-weight: 600; }
.pdv2-card-thumbs { display: flex; gap: 14px; }
.pdv2-card-thumb { width: 33.33%; aspect-ratio: 1; background: var(--bg-light); border-radius: var(--radius); padding: 14px; display: flex; align-items: center; justify-content: center; border: 2px solid var(--border); }
.pdv2-card-thumb img { max-width: 100%; max-height: 100%; object-fit: contain; }

/* 两列布局 */
.pdv2-card-grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: 40px; align-items: start; }
.pdv2-card-col { min-width: 0; }

/* 区块标题 */
.pdv2-card-section { margin-bottom: 20px; padding: 20px; border-radius: var(--radius); background: #fafbfc; border: 1px solid #dde0e4; }
.pdv2-card-section:nth-of-type(1) { background: #f9fafb; }
.pdv2-card-section:nth-of-type(2) { background: #f7f8fa; }
.pdv2-card-section:nth-of-type(3) { background: #f5f6f9; }
.pdv2-card-sec-title { display: flex; align-items: baseline; gap: 14px; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px dashed #e0e3e8; }
.pdv2-card-sec-title .en { color: var(--primary); font-size: 14px; font-weight: 700; letter-spacing: 1.5px; }
.pdv2-card-sec-title .cn { color: var(--text-primary); font-size: 14px; font-weight: 700; }

.pdv2-card-desc { color: var(--text-secondary); line-height: 1.85; font-size: 14px; }
.pdv2-card-features { padding: 0; }
.pdv2-card-features li { display: flex; align-items: flex-start; gap: 10px; padding: 6px 0; font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
.pdv2-card-features li::before { content: '\2713'; color: var(--primary); font-weight: 700; flex-shrink: 0; }

/* 参数 3列 */
.pdv2-card-params { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
@media (max-width: 900px) {
  .pdv2-card-top { grid-template-columns: 1fr; gap: 24px; }
  .pdv2-card-grid { grid-template-columns: 1fr; gap: 24px; }
  .pdv2-card-apps { grid-template-columns: repeat(2, 1fr); }
  .pdv2-deriv-card { grid-template-columns: 1fr; }
  .pdv2-deriv-card .deriv-img { width: 100%; max-width: 240px; margin: 0 auto; }
}
.pdv2-card-param { background: #fff; border-radius: var(--radius); padding: 14px 16px; border: 1px solid #dde0e4; box-shadow: 0 1px 3px rgba(0,0,0,.03); }
.pdv2-card-param .pk { display: block; font-size: 12px; color: var(--text-muted); margin-bottom: 6px; }
.pdv2-card-param .pv { display: block; font-size: 15px; color: var(--primary); font-weight: 700; }

/* 特殊参数图（关键参数为图片时） */
.pdv2-special-chart { margin-top: 4px; text-align: center; }
.pdv2-special-chart img { max-width: 100%; height: auto; border-radius: 6px; border: 1px solid #dde0e4; display: inline-block; }

/* 应用领域 2x3 */
.pdv2-card-apps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.pdv2-card-app { display: flex; align-items: center; gap: 8px; padding: 12px 10px; background: #fff; border-radius: var(--radius); font-size: 13px; color: var(--text-primary); border: 1px solid #d5d9de; box-shadow: 0 1px 2px rgba(0,0,0,.02); }
.pdv2-card-app > span:last-child { flex: 1; text-align: center; }
.pdv2-card-app .ico { font-size: 20px; display: flex; align-items: center; margin-left: 10px; }
.pdv2-card-app .ico img { width: 20px; height: 20px; object-fit: contain; }

/* 关联解决方案卡片 */
.pdv2-card-solus { display: flex; flex-direction: column; gap: 12px; }
.pdv2-card-solu { background: #fff; border-radius: var(--radius); padding: 16px 18px; display: flex; align-items: center; gap: 26px; border: 1px solid #dde0e4; box-shadow: 0 1px 3px rgba(0,0,0,.04); }
.pdv2-card-solu .ico { font-size: 22px; color: var(--primary); flex-shrink: 0; display: flex; align-items: center; margin-left: 5px; }
.pdv2-card-solu .ico img { width: 26px; height: 26px; object-fit: contain; filter: brightness(0) saturate(100%) invert(14%) sepia(87%) saturate(6931%) hue-rotate(358deg) brightness(81%) contrast(114%); }
.pdv2-card-solu .body { flex: 1; }
.pdv2-card-solu .body .t { font-size: 15px; font-weight: 700; color: var(--text-primary); margin-bottom: 6px; }
.pdv2-card-solu .body .meta { font-size: 12px; color: var(--text-muted); }

/* 衍生产品 */
.pdv2-deriv-head { display: flex; align-items: baseline; gap: 14px; padding: 24px 0 40px 8px; max-width: var(--container-width); margin: 0 auto; }
.pdv2-deriv-head .en { font-size: 13px; font-weight: 700; letter-spacing: 2px; color: var(--text-muted); }
.pdv2-deriv-head .cn { font-size: 20px; font-weight: 800; color: var(--primary); }

.pdv2-deriv-card { display: grid; grid-template-columns: 160px 1fr 480px; gap: 0 25px; padding: 28px 60px 28px 80px;
  background: #fff; border-radius: var(--radius-lg); box-shadow: 0 2px 12px rgba(0,0,0,.08); border: 1px solid #d0d4da;
  margin-bottom: 32px; align-items: center; min-height: 200px; }
.pdv2-deriv-card .deriv-img { width: 160px; aspect-ratio: 1; background: #f9fafb; border-radius: var(--radius);
  padding: 16px; display: flex; align-items: center; justify-content: center; border: 1px solid #dde0e4; }
.pdv2-deriv-card .deriv-img img { max-width: 100%; max-height: 100%; object-fit: contain; }
.pdv2-deriv-card .deriv-name { font-size: 22px; font-weight: 700; color: var(--text-primary); margin: 0; }
.pdv2-deriv-card .deriv-name-row { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.pdv2-deriv-card .deriv-tag { padding: 4px 12px; background: var(--primary); color: #fff; border-radius: 4px; font-size: 12px; font-weight: 600; }
.pdv2-deriv-card .deriv-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.85; margin-bottom: 10px; }
.pdv2-deriv-card .deriv-features { padding: 0; margin: 0; }
.pdv2-deriv-card .deriv-features li { display: flex; align-items: flex-start; gap: 8px; padding: 4px 0; font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
.pdv2-deriv-card .deriv-features li::before { content: '\2713'; color: var(--primary); font-weight: 700; flex-shrink: 0; }
.pdv2-deriv-card .deriv-params { background: #fafbfc; border-radius: var(--radius); padding: 14px 16px; border: 1px solid #dde0e4; }
.pdv2-deriv-card .deriv-params table { width: 100%; border-collapse: collapse; }
.pdv2-deriv-card .deriv-params td { padding: 7px 0; font-size: 14px; border-bottom: 1px dashed var(--border); vertical-align: top; }
.pdv2-deriv-card .deriv-params td:first-child { color: var(--text-muted); white-space: nowrap; width: 1%; padding-right: 12px; }
.pdv2-deriv-card .deriv-params td:last-child { color: var(--primary); font-weight: 700; text-align: right; word-break: break-all; line-height: 1.5; }
.pdv2-deriv-card .deriv-params tr:last-child td { border-bottom: none; }

/* 底部咨询栏 */
.pdv2-bottom-bar { background: #eef0f3; border-radius: var(--radius); padding: 18px 24px; display: flex; align-items: center; justify-content: space-between; margin: 48px 0 80px; max-width: none; }
.pdv2-bottom-bar .tip { color: var(--text-secondary); font-size: 14px; }
.pdv2-bottom-bar .tip .ico { color: var(--primary); margin-right: 6px; }
.pdv2-bottom-bar .actions { display: flex; gap: 12px; }
.pdv2-bottom-bar .btn-contact { padding: 10px 24px; border-radius: var(--radius); font-size: 14px; font-weight: 600; cursor: pointer; border: none; background: var(--primary); color: #fff; text-decoration: none; }

}
}

/* ============================================
   SOLUTIONS PAGE - Tab + 案例研究
   ============================================ */
.sol-tabs { background: rgba(0,0,0,.08); }
.sol-tabs-inner { width: var(--content-ratio); max-width: var(--max-width); margin: 0 auto; display: flex; padding: 6px 24px; gap: 4px; }
.sol-tabs a { padding: 10px 28px; border-radius: 6px; color: var(--text-secondary); font-size: 14px; font-weight: 500; white-space: nowrap; transition: all .2s ease; }
.sol-tabs a:hover { background: rgba(200,16,46,.08); color: var(--primary); }
.sol-tabs a.active { background: var(--primary); color: #fff; font-weight: 700; }
.sol-tabs a .en { display: block; font-size: 10px; letter-spacing: 1.5px; color: rgba(255,255,255,.7); font-weight: 500; margin-bottom: 2px; }

.sol-content { padding: 48px 0 80px; }
.sol-header { margin-bottom: 32px; }
.sol-header h2 { font-size: 28px; font-weight: 700; margin-bottom: 12px; }
.sol-header p { color: var(--text-secondary); font-size: 15px; line-height: 1.7; max-width: 800px; }

/* 解决方案子页面 */
.sol-detail-main { padding: 48px 0 80px; }
.sol-detail-head { margin-bottom: 32px; }
.sol-tag { display: inline-block; padding: 6px 16px; background: rgba(200,16,46,.06); color: var(--primary); border-radius: 16px; font-size: 12px; font-weight: 700; letter-spacing: 2px; margin-bottom: 14px; }
.sol-detail-head h2 { font-size: 30px; font-weight: 700; margin-bottom: 14px; line-height: 1.4; }
.sol-detail-head h1 { font-size: 32px; font-weight: 700; margin-bottom: 14px; line-height: 1.4; }
.sol-detail-head p { color: var(--text-secondary); font-size: 15px; line-height: 1.75; max-width: 900px; }
.sol-detail-diagram { background: #fff; border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow-sm); margin-bottom: 32px; }
.sol-detail-diagram img { width: 100%; display: block; }

/* ----- 新能源整车方案：左右分栏 + 中央带标注底图 ----- */
.sol-layout { display: grid; grid-template-columns: 195px 1fr 190px; gap: 8px; align-items: start; margin-bottom: 18px; }
.sol-panel { background: #fff; border: 3px solid var(--primary); border-radius: var(--radius); padding: 16px 18px; font-size: 13px; }
.sol-panel-left { border-color: #1a8a3f; }
.sol-panel-right { border-color: #0e8a96; }
.sol-panel-title { font-size: 15px; font-weight: 700; color: #fff; padding: 10px 14px; margin: -16px -18px 12px; border-bottom: none; background: #1a8a3f; border-radius: 3px 3px 0 0; }
.sol-panel-left .sol-panel-title { color: #fff; background: #1a8a3f; }
.sol-panel-right .sol-panel-title { color: #fff; background: #0e8a96; }
.sol-panel > p { color: var(--text-secondary); font-size: 12px; line-height: 1.6; margin-bottom: 12px; }
.sol-cat { margin-bottom: 14px; }
.sol-cat h4 { font-size: 13px; font-weight: 700; color: var(--text-primary); padding-left: 8px; border-left: 3px solid var(--primary); margin-bottom: 8px; }
.sol-panel-left .sol-cat h4 { border-left-color: #1a8a3f; }
.sol-panel-right .sol-cat h4 { border-left-color: #0e8a96; }
.sol-cat ul { display: flex; flex-wrap: wrap; gap: 4px 12px; }
.sol-cat li { font-size: 12px; }
.sol-cat a { color: #1e6fcf; text-decoration: underline; }
.sol-cat a:hover { color: var(--primary); }

.sol-img-wrap { position: relative; }
.sol-label { position: absolute; background: #1a8a3f; color: #fff; font-size: 11px; font-weight: 700; padding: 5px 10px; border-radius: 3px; line-height: 1.3; text-align: center; white-space: nowrap; box-shadow: 0 2px 6px rgba(0,0,0,.15); }
.sol-label-1 { top: 28%; left: 14%; }
.sol-label-2 { top: 28%; left: 36%; }
.sol-label-3 { background: #0e8a96; top: 50%; left: 28%; }
.sol-label-4 { background: #0d5ec7; top: 64%; left: 70%; }

/* 工程特种车辆页面：3 个标签，位置不同 */
.sol-img-wrap .sol-label-1 { top: 22%; left: 28%; }
.sol-img-wrap .sol-label-2 { background: #0e8a96; top: 38%; left: 50%; }
.sol-img-wrap .sol-label-3 { background: #0e8a96; top: 55%; left: 30%; }

.sol-line { position: absolute; z-index: 1; }
.sol-line-left1 { top: 32%; left: 0; width: 14%; height: 3px; background: #1a8a3f; }
.sol-line-left2 { top: 32%; left: 14%; width: 22%; height: 3px; background: #1a8a3f; }
.sol-line-right3 { top: 54%; left: 36%; width: 64%; height: 3px; background: #0e8a96; }
.sol-line-blue-v { top: 72%; left: 74%; width: 3px; height: 28%; background: #0d5ec7; }

/* 工程特种车辆页面连线 */
.sol-img-wrap .sol-line-left1 { top: 26%; left: 0; width: 28%; height: 3px; background: #1a8a3f; }
.sol-img-wrap .sol-line-left2 { display: none; }
.sol-img-wrap .sol-line-right3 { top: 38%; left: 56%; width: 44%; height: 3px; background: #0e8a96; }
.sol-img-wrap .sol-line-right3a { top: 55%; left: 36%; width: 64%; height: 3px; background: #0e8a96; }

/* 机器人关节页面 */
.sol-img-wrap .sol-line-left1 { top: 56%; left: 0; width: 18%; height: 3px; background: #1a8a3f; }
.sol-img-wrap .sol-line-right3a { top: 26%; left: 64%; width: 36%; height: 3px; background: #0e8a96; }
.sol-img-wrap .sol-line-blue-v { top: 74%; left: 62%; width: 3px; height: 26%; background: #0d5ec7; }

.sol-panel-bottom { border-color: #0d5ec7; max-width: 50%; margin: -8px auto 0; }
.sol-panel-bottom .sol-panel-title { color: #fff; background: #0d5ec7; }
.sol-panel-bottom .sol-cat h4 { border-left-color: #0d5ec7; }
.sol-cat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; padding-top: 8px; }
.sol-cat-grid .sol-cat { margin-bottom: 0; }
.sol-panel-right-stack { display: flex; flex-direction: column; gap: 14px; }
.sol-panel-right-stack .sol-panel-bottom { max-width: none; margin-left: 0; margin-right: 0; }

/* 无人机页面：左右两栏（中间栏放图） */
.sol-layout.drone-layout { grid-template-columns: 215px 1fr 225px; }
.sol-layout.drone-layout .sol-img-wrap img { max-width: 100%; margin: 0 auto; }

/* 机器人关节页面：中间图缩小居中 */
.sol-layout.robot-layout .sol-img-wrap img { max-width: 84%; margin: 0 auto; display: block; }
/* 左右文字块向中间靠拢 */
.sol-layout.robot-layout .sol-panel-left { transform: translateX(80px); }
.sol-layout.robot-layout .sol-panel-right-stack { transform: translateX(-78px); }

.case-study-head { margin: 32px 0 16px; }
.case-study-head h2 { font-size: 18px; font-weight: 700; margin-top: 8px; }
.case-study-wrap { background: #fff; border-radius: var(--radius-lg); padding: 40px; box-shadow: var(--shadow-sm); }
.case-col ul { margin-left: 16px; }
.case-col ul li { font-size: 13.5px; color: var(--text-secondary); line-height: 1.75; margin-bottom: 8px; list-style: disc; }

.sol-diagram { background: #fff; border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow-sm); margin-bottom: 48px; }
.sol-diagram img { max-width: 100%; margin: 0 auto; display: block; }

.case-study { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }
.case-col { padding: 0 20px; min-height: 330px; }
.case-col h3 { font-size: 17px; font-weight: 700; margin-bottom: 20px; display: flex; align-items: center; gap: 8px; padding-bottom: 14px; border-bottom: 2px solid var(--primary-soft); }
.case-col h3 .icon { color: var(--primary); font-size: 20px; }
.case-col.cus h3 .icon { background: var(--primary); color: #fff; width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 16px; }
.case-col.sol h3 .icon { background: var(--primary); color: #fff; width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 14px; }
.case-col.val h3 .icon { color: var(--primary); font-size: 20px; }
.case-col p { font-size: 13.5px; color: var(--text-secondary); line-height: 1.75; margin-bottom: 10px; }
.case-prod-list .item { display: flex; align-items: center; gap: 12px; padding: 12px 14px; background: var(--bg-light); border-radius: var(--radius); margin-bottom: 10px; font-size: 13px; }
.case-prod-list .item .pic { width: 36px; height: 36px; background: #fff; border-radius: 4px; padding: 4px; flex-shrink: 0; }
.case-prod-list .item .pic img { width: 100%; height: 100%; object-fit: contain; }
.case-prod-list .item .text strong { color: var(--text-primary); display: block; margin-bottom: 2px; font-size: 13.5px; }
.case-prod-list .item .text span { color: var(--text-muted); font-size: 12px; }
/* 新版解决方案卡片 */
.case-prod-item { display: flex; align-items: center; gap: 12px; padding: 14px 16px; background: var(--bg-light); border-radius: var(--radius); margin-bottom: 10px; }
.prod-icon { flex-shrink: 0; width: 36px; height: 36px; background: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 18px; }
.prod-text strong { display: block; color: var(--text-primary); font-size: 13.5px; margin-bottom: 3px; }
.prod-text span { color: var(--text-muted); font-size: 12px; }
.cta-btn { margin-top: 40px; margin-left: auto; margin-right: auto; display: table; }
.sol-case-tag { display: inline-block; padding: 6px 14px; background: rgba(200,16,46,.06); color: var(--primary); font-size: 12px; font-weight: 700; letter-spacing: 2px; border-radius: 4px; margin: 32px 0 16px; }
.case-value-list li { display: flex; align-items: flex-start; gap: 8px; padding: 6px 0; font-size: 13.5px; color: var(--text-secondary); }
.case-value-list li::before { content: '✓'; color: var(--primary); font-weight: 700; flex-shrink: 0; }
.case-cta { text-align: center; margin-top: 32px; }

/* ============================================
   ABOUT PAGE - 5个子页面
   ============================================ */
.about-nav { background: rgba(0,0,0,.08); }
.about-nav-inner { display: flex; padding: 6px 24px; gap: 4px; width: var(--content-ratio); max-width: var(--max-width); margin: 0 auto; }
.about-nav a { display: block; padding: 10px 28px; border-radius: 6px; color: var(--text-secondary); font-size: 14px; font-weight: 500; transition: all .2s ease; white-space: nowrap; }
.about-nav a:hover { background: rgba(200,16,46,.08); color: var(--primary); }
.about-nav a.active { background: var(--primary); color: #fff; font-weight: 700; }
.about-content { padding: 0; }

.about-intro-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; }
.about-intro-grid .left h2 { font-size: 32px; font-weight: 800; line-height: 1.35; margin-bottom: 12px; }
.about-intro-grid .left .sub { color: var(--primary); font-size: 14px; font-weight: 600; margin-bottom: 24px; display: flex; align-items: center; gap: 8px; }
.about-intro-grid .left .sub::after { content: ''; flex: 1; height: 1px; background: var(--primary); max-width: 60px; }
.about-intro-grid .left p { color: var(--text-secondary); line-height: 1.85; margin-bottom: 16px; font-size: 14.5px; }
.about-intro-grid .left .features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 28px; padding-top: 24px; border-top: 1px dashed var(--border); }
.about-intro-grid .left .features .f { text-align: center; }
.about-intro-grid .left .features .f .ic { width: 44px; height: 44px; margin: 0 auto 8px; background: var(--primary-soft); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 20px; }
.about-intro-grid .left .features .f strong { display: block; font-size: 14px; margin-bottom: 2px; }
.about-intro-grid .left .features .f span { font-size: 12px; color: var(--text-muted); }
.about-intro-grid .right { background: var(--bg-light); border-radius: var(--radius-lg); aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.about-intro-grid .right .play-btn { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 64px; height: 64px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 22px; cursor: pointer; transition: all var(--transition); }
.about-intro-grid .right .play-btn:hover { transform: translate(-50%, -50%) scale(1.1); background: var(--primary-dark); }
.about-intro-grid .right img { width: 100%; height: 100%; object-fit: cover; }

/* Development Timeline */
.timeline-wrap { background: linear-gradient(180deg, #2d2d4a 0%, #3a3a5c 100%); border-radius: var(--radius-lg); padding: 60px 40px; color: #fff; }
.timeline-wrap .header h2 { font-size: 30px; font-weight: 700; margin-bottom: 6px; display: flex; align-items: center; gap: 12px; }
.timeline-wrap .header h2 .en { font-size: 12px; letter-spacing: 3px; color: rgba(255,255,255,.6); font-weight: 500; }
.timeline-wrap .header .accent-bar { width: 28px; height: 3px; background: var(--primary); margin: 14px 0 36px; }
.timeline-rows { display: flex; flex-direction: column; gap: 28px; }
.timeline-row { display: grid; grid-template-columns: 220px 1fr; gap: 36px; padding: 20px 0; border-bottom: 1px solid rgba(255,255,255,.08); }
.timeline-row:last-child { border-bottom: none; }
.timeline-row .left { font-size: 18px; font-weight: 700; color: var(--primary-light); }
.timeline-row .events { display: flex; flex-direction: column; gap: 18px; }
.timeline-row .event { display: grid; grid-template-columns: 90px 1fr; gap: 20px; padding-left: 18px; border-left: 2px solid rgba(255,255,255,.12); position: relative; }
.timeline-row .event::before { content: ''; position: absolute; left: -6px; top: 8px; width: 10px; height: 10px; background: var(--primary); border-radius: 50%; }
.timeline-row .event .year { font-size: 22px; font-weight: 700; color: #fff; }
.timeline-row .event .desc { font-size: 13.5px; color: rgba(255,255,255,.85); line-height: 1.7; padding-top: 2px; }
.timeline-row .stage { background: rgba(255,255,255,.05); padding: 4px 14px; border-radius: 4px; font-size: 13px; color: rgba(255,255,255,.9); margin-bottom: 6px; display: inline-block; }

/* Strengths (企业实力) tabs + content */
.strength-tabs { display: flex; gap: 0; border-bottom: 2px solid var(--bg-gray); margin-bottom: 36px; }
.strength-tabs button { padding: 14px 28px; background: none; font-size: 15px; font-weight: 600; color: var(--text-secondary); border-bottom: 3px solid transparent; margin-bottom: -2px; cursor: pointer; transition: all var(--transition); }
.strength-tabs button.active { color: var(--primary); border-bottom-color: var(--primary); }
.strength-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.strength-list .item { display: flex; gap: 14px; padding: 16px 0; border-bottom: 1px dashed var(--border); }
.strength-list .item .ic { width: 40px; height: 40px; background: var(--primary-soft); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 18px; flex-shrink: 0; }
.strength-list .item .info h4 { font-size: 15px; font-weight: 700; margin-bottom: 6px; }
.strength-list .item .info p { font-size: 13.5px; color: var(--text-secondary); line-height: 1.7; }
.strength-list .item .info .tag-row { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px; }
.strength-list .item .info .tag-row .tg { padding: 3px 10px; background: var(--bg-light); border-radius: 3px; font-size: 11px; color: var(--text-secondary); }
.strength-image { background: var(--bg-light); border-radius: var(--radius-lg); aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.strength-image img { width: 100%; height: 100%; object-fit: cover; }

/* Certifications */
.cert-section { margin-bottom: 48px; }
.cert-section h2 { font-size: 24px; font-weight: 700; margin-bottom: 24px; display: flex; align-items: center; gap: 12px; padding-bottom: 14px; border-bottom: 2px solid var(--bg-gray); }
.cert-section h2::before { content: ''; width: 4px; height: 22px; background: var(--primary); border-radius: 2px; }
.cert-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cert-card { background: #fff; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--border); transition: all var(--transition); }
.cert-card:hover { border-color: var(--primary); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.cert-card .img-wrap { aspect-ratio: 4/3; background: #fff; padding: 16px; display: flex; align-items: center; justify-content: center; }
.cert-card .img-wrap img { max-width: 100%; max-height: 100%; object-fit: contain; }
.cert-card .body { padding: 12px 16px; text-align: center; font-size: 13px; font-weight: 600; border-top: 1px solid var(--border); }

/* About 各节（浅色默认背景） */
.culture-block h2 { font-size: 24px; font-weight: 700; margin-bottom: 24px; padding-bottom: 14px; border-bottom: 2px solid var(--bg-gray); }

/* Culture (企业文化节 - 深色背景，仅此节) */
#culture { background: linear-gradient(180deg, #2a2a45 0%, #1f1f38 100%); color: #fff; }
#culture h2 { border-bottom-color: rgba(255,255,255,.12); }
#culture .breadcrumb { color: rgba(255,255,255,.7); }
#culture .breadcrumb a { color: rgba(255,255,255,.7); }

.culture-values { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.culture-value-card { padding: 28px 20px; background: rgba(255,255,255,.05); border-radius: var(--radius-lg); border: 1px solid rgba(255,255,255,.08); text-align: center; }
.culture-value-card .ic { font-size: 36px; color: var(--primary); margin-bottom: 14px; }
.culture-value-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; color: var(--primary-light); }
.culture-value-card p { font-size: 13px; line-height: 1.7; color: rgba(255,255,255,.78); }
.culture-banner { background: linear-gradient(135deg, #1a1a2e 0%, #2d2d4a 100%); border-radius: var(--radius-lg); padding: 60px 40px; text-align: center; margin-top: 48px; }
.culture-banner h3 { font-size: 32px; font-weight: 800; color: #fff; letter-spacing: 2px; }
.culture-banner .en { display: block; font-size: 13px; letter-spacing: 4px; color: var(--primary-light); margin-top: 8px; }

/* ============================================
   NEWS PAGE - 白底 banner
   ============================================ */
.news-banner { height: 280px; background: #fafbfc; position: relative; overflow: hidden; }
.news-banner::before { content: 'CORPORATE NEWS'; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: 96px; font-weight: 900; color: rgba(0,0,0,.04); letter-spacing: 12px; white-space: nowrap; }
.news-banner .deco-circles { position: absolute; inset: 0; pointer-events: none; }
.news-banner .deco-circles .c1 { position: absolute; top: 30px; left: 12%; width: 80px; height: 80px; border-radius: 50%; background: radial-gradient(circle, rgba(200,16,46,.12), transparent); }
.news-banner .deco-circles .c2 { position: absolute; bottom: 40px; right: 18%; width: 60px; height: 60px; border-radius: 50%; background: radial-gradient(circle, rgba(200,16,46,.18), transparent); }
.news-banner .deco-chat { position: absolute; top: 60px; right: 12%; width: 80px; height: 60px; background: var(--primary); border-radius: 16px; }
.news-banner .deco-chat::before { content: ''; position: absolute; bottom: -10px; left: 20px; border: 10px solid transparent; border-top-color: var(--primary); }
.news-banner .deco-cube { position: absolute; bottom: 50px; right: 8%; width: 60px; height: 60px; background: linear-gradient(135deg, #aaa, #666); transform: rotate(15deg); border-radius: 6px; }
.news-banner-content { position: relative; z-index: 2; max-width: 1200px; margin: 0 auto; padding: 0 20px; height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.news-banner-content .en { font-size: 12px; letter-spacing: 6px; color: var(--primary); font-weight: 600; margin-bottom: 8px; }
.news-banner-content h1 { font-size: 36px; font-weight: 800; color: var(--text-primary); letter-spacing: 4px; }

.news-list { display: flex; flex-direction: column; gap: 24px; padding: 40px 0 60px; }
.news-list .news-item {
  display: grid; grid-template-columns: 100px 220px 1fr; gap: 28px; align-items: center;
  background: #fff; border-radius: var(--radius-lg); padding: 24px;
  box-shadow: var(--shadow-sm); transition: all var(--transition); border: 1px solid transparent;
}
.news-list .news-item:hover { box-shadow: var(--shadow-md); border-color: var(--primary); }
.news-list .news-date .day { font-size: 48px; font-weight: 800; color: var(--text-primary); line-height: 1; }
.news-list .news-date .ym { font-size: 13px; color: var(--text-muted); margin-top: 4px; }
.news-list .news-thumb { width: 220px; height: 130px; background: var(--bg-light); border-radius: var(--radius); overflow: hidden; display: flex; align-items: center; justify-content: center; padding: 8px; }
.news-list .news-thumb img { max-width: 100%; max-height: 100%; object-fit: contain; }
.news-list .news-info h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; line-height: 1.45; }
.news-list .news-info h3 a:hover { color: var(--primary); }
.news-list .news-info p { font-size: 13.5px; color: var(--text-secondary); line-height: 1.65; margin-bottom: 14px; }
.news-list .news-info .btn-sm { padding: 6px 14px; font-size: 12px; }

.pagination { display: flex; justify-content: center; gap: 6px; margin-top: 48px; margin-bottom: 80px; }
.pagination a, .pagination span {
  min-width: 38px; height: 38px; padding: 0 12px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 4px; font-size: 14px; border: 1px solid var(--border); transition: all var(--transition); color: var(--text-secondary);
}
.pagination a:hover, .pagination span.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* News Detail */
.news-detail { padding: 40px 0 80px; }
.news-detail .container { width: 92%; max-width: 880px; }
.news-detail .article-card { background: #fff; border-radius: var(--radius-lg); padding: 40px 48px; box-shadow: var(--shadow-sm); }
.news-detail h1 { font-size: 26px; font-weight: 800; line-height: 1.4; margin-bottom: 14px; }
.news-detail .meta { display: flex; gap: 20px; font-size: 13px; color: var(--text-muted); margin-bottom: 28px; padding-bottom: 20px; border-bottom: 1px solid var(--border); }
.news-detail .article-body p { color: var(--text-secondary); line-height: 1.85; margin-bottom: 16px; font-size: 14.5px; }
.news-detail .article-body h2 { font-size: 19px; font-weight: 700; margin: 24px 0 12px; color: var(--text-primary); }
.news-detail .article-body blockquote { border-left: 4px solid var(--primary); padding: 16px 24px; margin: 28px 0; background: var(--bg-light); border-radius: 0 var(--radius) var(--radius) 0; }
.news-detail .article-images { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 24px 0; }
.news-detail .article-images img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: var(--radius); }
.news-detail .related { margin-top: 40px; padding-top: 28px; border-top: 1px solid var(--border); }
.news-detail .related h3 { font-size: 17px; font-weight: 700; margin-bottom: 18px; }
.news-detail .related .item { display: flex; justify-content: space-between; align-items: center; padding: 12px 0; border-bottom: 1px dashed var(--border); font-size: 14px; color: var(--text-secondary); }
.news-detail .related .item:hover .title { color: var(--primary); }
.news-detail .related .item .title { flex: 1; }
.news-detail .related .item .date { color: var(--text-muted); font-size: 12px; margin-left: 16px; }
.news-detail .nav-bar { display: flex; justify-content: space-between; align-items: center; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--border); }
.nav-btn { display: inline-flex; align-items: center; padding: 8px 20px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; color: var(--text-secondary); background: #fff; text-decoration: none; transition: all .2s ease; cursor: pointer; }
.nav-btn:hover { color: var(--primary); border-color: var(--primary); background: rgba(200,16,46,.04); }
.nav-btn.disabled { color: var(--text-muted); border-color: var(--border); background: #f5f5f7; cursor: not-allowed; pointer-events: none; opacity: .5; }
.nav-btn:active { background: rgba(200,16,46,.1); transform: scale(.97); }
.nav-btn-group { display: flex; gap: 10px; }

/* ============================================
   CONTACT PAGE - 自然风景 banner
   ============================================ */
.contact-banner { height: 320px; background: linear-gradient(180deg, #a8d8e8 0%, #c8e6c9 100%); position: relative; overflow: hidden; }
.contact-banner::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 60%; background: linear-gradient(180deg, rgba(168,216,232,.7) 0%, transparent 100%); }
.contact-banner::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 50%; background: linear-gradient(180deg, transparent 0%, #88c478 60%, #5a9a4e 100%); border-radius: 50% 50% 0 0 / 30% 30% 0 0; }
.contact-banner .clouds { position: absolute; top: 30px; left: 0; right: 0; }
.contact-banner .clouds .c { position: absolute; background: rgba(255,255,255,.85); border-radius: 50px; }
.contact-banner .clouds .c1 { width: 80px; height: 24px; top: 20px; left: 18%; }
.contact-banner .clouds .c2 { width: 100px; height: 28px; top: 50px; left: 50%; }
.contact-banner .clouds .c3 { width: 60px; height: 20px; top: 80px; left: 78%; }
.contact-banner .badge-row { position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%); display: flex; gap: 14px; z-index: 5; }
.contact-banner .badge-row .b { padding: 8px 18px; background: var(--primary); color: #fff; font-size: 13px; font-weight: 600; border-radius: 4px; box-shadow: 0 2px 8px rgba(0,0,0,.2); }
.contact-banner .badge-row .b.green { background: #4a9d3f; }
.contact-banner-content { position: relative; z-index: 6; max-width: 1200px; margin: 0 auto; padding: 0 20px; height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.contact-banner-content .en { font-size: 12px; letter-spacing: 4px; color: #fff; font-weight: 500; margin-bottom: 6px; text-shadow: 0 1px 4px rgba(0,0,0,.2); }
.contact-banner-content h1 { font-size: 34px; font-weight: 800; color: #fff; letter-spacing: 6px; text-shadow: 0 2px 12px rgba(0,0,0,.25); }

.contact-content { padding: 56px 0 80px; }
.contact-grid { display: grid; grid-template-columns: 1fr 420px; gap: 36px; }
.contact-info-card { background: #fff; border-radius: var(--radius-lg); padding: 40px; box-shadow: var(--shadow-sm); }
.contact-info-card h2 { font-size: 22px; font-weight: 800; margin-bottom: 32px; }
.contact-info-card .row { display: flex; gap: 14px; margin-bottom: 26px; padding-bottom: 26px; border-bottom: 1px solid var(--border); }
.contact-info-card .row:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.contact-info-card .row .ic { width: 42px; height: 42px; background: var(--bg-light); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 18px; flex-shrink: 0; }
.contact-info-card .row .ic img { width: 24px; height: 24px; object-fit: contain; }
.contact-info-card .row .info h4 { font-size: 14px; font-weight: 700; margin-bottom: 6px; color: var(--text-primary); }
.contact-info-card .row .info p { font-size: 13.5px; color: var(--text-secondary); line-height: 1.6; }
.contact-info-card .row .info p a { color: var(--primary); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; transition: color var(--transition), opacity var(--transition); }
.contact-info-card .row .info p a:hover { color: var(--primary-dark); opacity: .85; }
.contact-form-card { background: #fff; border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow-sm); border: 1px solid var(--border); }
.contact-form-card .form-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 28px; }
.contact-form-card .form-head h3 { font-size: 20px; font-weight: 800; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--text-secondary); }
.form-group label::after { content: ' *'; color: var(--primary); }
.form-group input, .form-group textarea {
  width: 100%; padding: 11px 14px; border: 1.5px solid var(--border); border-radius: 4px;
  font-size: 14px; transition: border-color var(--transition); background: #fff;
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-submit { width: 100%; padding: 12px; justify-content: center; font-size: 15px; }

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 960px) {
  .industry-grid, .about-intro-grid, .strength-panel, .pd-intro, .contact-grid { grid-template-columns: 1fr; }
  .product-series-grid, .product-grid { grid-template-columns: repeat(2, 1fr); }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .case-study, .cert-grid-4, .culture-values { grid-template-columns: repeat(2, 1fr); }
  .pd-other-item { grid-template-columns: 1fr; }
  .products-layout { grid-template-columns: 1fr; }
  .filter-sidebar { position: static; }
  .timeline-row { grid-template-columns: 1fr; gap: 12px; }
  .network-card { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 600px) {
  .product-series-grid, .product-grid, .advantages-grid, .cert-grid-4, .culture-values, .case-study { grid-template-columns: 1fr; }
  .partner-logos { grid-template-columns: 1fr; }
  .hero-content h1 { font-size: 30px; }
  .page-banner-content h1, .news-banner-content h1, .contact-banner-content h1 { font-size: 24px; }
  .pd-params, .about-intro-grid .left .features { grid-template-columns: 1fr; }
  .news-list .news-item { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; }
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
.animate-in { animation: fadeInUp .6s ease forwards; }

/* ============================================
   About Page (关于我们)
   ============================================ */
.about-section { padding: 60px 0; background: #fff; }
.about-section + .about-section { padding-top: 0; }

/* breadcrumb */
.breadcrumb { padding: 30px 0 24px; font-size: 13px; color: var(--text-muted); }

/* 公司概况 双栏 */
/* 公司概况：背景底图 + 白卡片 */
.profile-section { position: relative; }
.profile-bg {
  position: absolute; inset: 0;
  background: url('../images/about/profile-bg.png') center/cover no-repeat;
  opacity: .45; z-index: 0;
}
.profile-section .container { position: relative; z-index: 1; }
.profile-grid { display: grid; grid-template-columns: 1fr 1.35fr; gap: 48px; align-items: stretch; }
.profile-kicker { font-size: 18px; color: var(--text-muted); font-weight: 600; margin-bottom: 12px; }
.profile-title { font-size: 28px; font-weight: 700; line-height: 1.4; color: var(--text-primary); margin-bottom: 18px; }
.accent-dots { display: flex; gap: 6px; margin-bottom: 20px; }
.accent-dots span { width: 8px; height: 8px; border-radius: 50%; background: var(--primary); }
.accent-dots span:nth-child(2) { background: rgba(0,0,0,.15); }
.profile-left p { font-size: 14px; line-height: 1.85; color: var(--text-secondary); margin-bottom: 12px; }
.profile-mini-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; margin-top: 28px; }
.mini-card { background: #fff; border-radius: 8px; padding: 12px 14px; transition: all .2s ease; box-shadow: 0 2px 10px rgba(0,0,0,.08); }
.mini-card:hover { box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.mini-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 8px; }
.mini-icon { width: 30px; height: 30px; border-radius: 6px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; font-size: 15px; }
.mini-icon img { width: 22px; height: 22px; object-fit: contain; }
.mini-title { font-size: 13px; font-weight: 700; color: var(--text-primary); }
.mini-desc { font-size: 10px; color: var(--text-muted); line-height: 1.7; }
.profile-video { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); aspect-ratio: 16 / 9; width: 100%; }
.profile-video img, .profile-video video { width: 100%; height: 100%; object-fit: cover; display: block; }
.play-btn { position: absolute; top:50%; left:50%; transform:translate(-50%,-50%); width:78px; height:78px; border-radius:50%; background:var(--primary); color:#fff; font-size:32px; display:flex; align-items:center; justify-content:center; padding-left:8px; box-shadow:0 6px 24px rgba(200,16,46,.4); transition:all .25s ease; text-decoration:none; }
.play-btn:hover { transform:translate(-50%,-50%) scale(1.08); }

/* 发展历程 时间线（紫色） */
.timeline-wrap { background: linear-gradient(180deg, #3d3360 0%, #5b4d85 100%); border-radius: var(--radius-lg); padding: 60px 48px; color: #fff; }
.timeline-header h2 { font-size: 28px; font-weight: 700; margin-bottom: 8px; display: flex; align-items: baseline; gap: 14px; }
.timeline-header h2 .en { font-size: 12px; letter-spacing: 4px; color: rgba(255,255,255,.6); font-weight: 500; }
.timeline-header .accent-bar { width: 36px; height: 3px; background: var(--primary); margin: 8px 0 36px; }
.timeline-rows { display: flex; flex-direction: column; gap: 36px; }
.timeline-stage { display: grid; grid-template-columns: 140px 1fr; gap: 32px; padding: 18px 0; border-bottom: 1px solid rgba(255,255,255,.08); }
.timeline-stage:last-child { border-bottom: none; }
.ts-label { background: rgba(255,255,255,.08); padding: 8px 16px; border-radius: 6px; font-size: 15px; font-weight: 700; color: #fff; text-align: center; border:1px solid rgba(255,255,255,.12); height:fit-content; }
.ts-events { display: flex; flex-direction: column; gap: 16px; }
.ts-event { position: relative; padding-left: 18px; border-left: 2px solid rgba(255,255,255,.15); display: flex; gap: 16px; font-size: 13.5px; line-height: 1.75; color: rgba(255,255,255,.85); }
.ts-event::before { content: ''; position: absolute; left: -6px; top: 8px; width: 10px; height: 10px; background: var(--primary); border-radius: 50%; }
.ts-year { font-size: 18px; font-weight: 700; color: #fff; white-space: nowrap; min-width: 80px; }

/* 企业实力 Tab */
.strength-tabs { display: flex; gap: 0; border-bottom: 2px solid var(--bg-gray); margin-bottom: 36px; }
.stab { display: flex; align-items: center; gap: 8px; padding: 14px 28px; font-size: 15px; font-weight: 600; color: var(--text-secondary); border-bottom: 3px solid transparent; margin-bottom: -2px; transition: all .2s ease; cursor: pointer; }
.stab .stab-icon { width: 20px; height: 20px; object-fit: contain; }
.stab:hover { color: var(--primary); }
.stab.active { color: var(--primary); border-bottom-color: var(--primary); }
.strength-panel { display: none; }
.strength-panel.active { display: block; animation: fadeInUp .35s ease; }
.strength-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 32px; align-items: start; }
.si-item { display: flex; gap: 14px; margin-bottom: 24px; }
.si-icon { flex-shrink: 0; width: 32px; height: 32px; border-radius: 50%; background: rgba(200,16,46,.12); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 16px; margin-top: 2px; }
.si-item h4 { font-size: 16px; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.si-item h4 span { font-size: 13px; font-weight: 400; color: var(--text-muted); margin-left: 6px; }
.si-item p { font-size: 13px; line-height: 1.75; color: var(--text-secondary); margin-bottom: 4px; }
.si-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 8px; }
.si-tags span { flex: 0 0 calc(25% - 8px); text-align: center; padding: 6px 8px; background: var(--bg-light); border-radius: 16px; font-size: 12.5px; color: var(--text-secondary); border: 1px solid var(--border); }
.si-tags .si-break { flex-basis: 100%; height: 0; margin: 0; padding: 0; border: none; background: none; }

/* 产品产能标签：灰色胶囊 + 年产量右对齐 */
.prod-tags { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 24px; margin-top: 12px; }
.prod-tag { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 6px 16px; background: var(--bg-light); border-radius: 18px; font-size: 13px; color: var(--text-primary); }
.prod-tag em { font-style: normal; font-size: 12.5px; color: var(--text-secondary); white-space: nowrap; }

/* 三端流程：标签胶囊 + 描述同行展示 */
.prod-list { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.prod-item { display: flex; align-items: baseline; gap: 12px; font-size: 13px; line-height: 1.75; color: var(--text-secondary); }
.prod-label { flex-shrink: 0; padding: 3px 14px; background: var(--bg-light); border-radius: 12px; font-size: 12.5px; color: var(--text-primary); font-weight: 500; }
.si-case { background: rgba(200,16,46,.04); border-left: 4px solid var(--primary); padding: 18px 22px; border-radius: 0 8px 8px 0; margin-top: 8px; font-size: 13.5px; line-height: 1.8; color: var(--text-secondary); }
.si-case b, .si-case strong { color: var(--primary); }
.si-case .solution { color: var(--primary); font-weight: 500; }
.strength-img { display: flex; justify-content: flex-start; }
.strength-img img { width: 74%; aspect-ratio: 11/16; object-fit: cover; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
#sp-quality .strength-img img { width: 80%; }
#sp-rd .strength-img img { width: 80%; }
#sp-prod .strength-img img { width: 80%; }

/* 资质认证 */
.cert-group-title { font-size: 18px; font-weight: 700; color: var(--text-primary); margin: 0 0 22px; display: flex; align-items: center; gap: 10px; }
.cert-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--primary); flex-shrink: 0; }
.cert-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; margin-bottom: 36px; }
.cert-card { background: #fff; border-radius: 8px; padding: 18px; text-align: center; border: 1px solid var(--border); transition: all .2s ease; display: block; }
.cert-card:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); transform: translateY(-3px); }
.cert-card img { width: 100%; height: 180px; object-fit: contain; background: #fff; border-radius: 4px; margin-bottom: 12px; }
.cert-card span { font-size: 13px; font-weight: 600; color: var(--text-primary); }
.cert-card .cert-name-main { display: block; font-size: 14px; font-weight: 700; }
.cert-card .cert-name-sub { display: block; font-size: 12px; font-weight: 400; color: var(--text-secondary); margin-top: 4px; line-height: 1.5; }
.cert-card .cert-name-ver { display: block; font-size: 12px; font-weight: 400; color: var(--text-muted); margin-top: 2px; }

/* 企业文化（6 大模块 + 各自背景图） */
.culture-section { background: #fff !important; color: var(--text-primary); padding: 0 0 80px; }
.cu-core-head h2 { font-size: 32px; font-weight: 700; color: #c81224; margin-bottom: 16px; letter-spacing: 6px; text-align: center !important; width: 100%; display: block; }
.cu-module { padding: 60px 0; }
.cu-module-inner { }
.cu-module-title { font-size: 22px; font-weight: 700; color: var(--text-primary); margin-bottom: 32px; padding-bottom: 14px; border-bottom: 1px solid rgba(0,0,0,.15); display: flex; align-items: center; gap: 8px; }
.cu-module-title::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--primary); flex-shrink: 0; }

/* 价值核心：行稳志远 + 6 值 2 列（中央分割线 + 左对齐文本） */
.cu-core-head { text-align: center; margin-bottom: 40px; }
.cu-core-head h2 { font-size: 32px; font-weight: 700; color: #c81224; margin-bottom: 16px; letter-spacing: 6px; text-align: center !important; width: 100%; display: block; }
.cu-core-head p { font-size: 14px; line-height: 1.95; color: #666; max-width: 720px; margin: 0 auto; text-align: center; }
.cu-values-section { position: relative; padding-bottom: 30px; }
.cu-values-section::before { content: ''; position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; background: #ddd; transform: translateX(-50%); }
.cu-values-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px 56px; padding: 30px 0 20px; }
.cv { text-align: center; }
.cv-k { font-size: 22px; font-weight: 700; color: #c81224; margin-bottom: 10px; }
.cv-d { font-size: 13px; line-height: 1.85; color: #666; display: inline-block; text-align: left; max-width: 235px; }
.cu-values-foot { display: grid; grid-template-columns: repeat(2, 1fr); gap: 56px; margin-top: 24px; font-size: 14px; color: #666; }
.cu-values-foot span { width: 235px; display: inline-block; justify-self: center; }
.cu-values-foot span:first-child { text-align: left; }
.cu-values-foot span:last-child { text-align: right; }

/* 企业定位 */
.cu-position-content { text-align: center; padding: 40px 20px; }
.cu-position-content h4 { font-size: 26px; font-weight: 700; color: #c81224; margin-bottom: 20px; }
.cu-position-content p { font-size: 14px; line-height: 1.95; color: #666; max-width: 760px; margin: 0 auto; text-align: left; }

/* 企业使命 */
.cu-mission-content { text-align: center; padding: 80px 20px; }
.cu-mission-content h4 { font-size: 26px; font-weight: 700; color: #c81224; letter-spacing: 1px; }

/* 发展愿景 */
.cu-vision-content { text-align: center; padding: 40px 20px; }
.cu-vision-content h4 { font-size: 26px; font-weight: 700; color: #c81224; margin-bottom: 22px; }
.cu-vision-content p { font-size: 14px; line-height: 1.95; color: #666; max-width: 820px; margin: 0 auto; text-align: left; }

/* 经营理念 */
.cu-philosophy-content { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; }
.cu-ph h5 { font-size: 18px; font-weight: 700; color: #c81224; margin-bottom: 14px; text-align: center; }
.cu-ph p { font-size: 13px; line-height: 1.85; color: #666; max-width: 280px; margin: 0 auto; text-align: left; }

/* 企业口号 */
.cu-slogan-content { text-align: center; padding: 60px 20px; }
.cu-slogan-content h2 { font-size: 36px; font-weight: 700; color: #c81224; margin-bottom: 16px; letter-spacing: 6px; display: block; }
.cs-en { font-size: 14px; color: #999; letter-spacing: 3px; margin-bottom: 24px; }
.cu-slogan-content p { font-size: 14px; line-height: 1.95; color: #666; max-width: 760px; margin: 0 auto 8px; }

/* about 响应式 */
@media (max-width: 1024px) {
  .profile-grid, .strength-grid, .cu-position, .cu-mission { grid-template-columns: 1fr; gap: 30px; }
  .profile-mini-cards { grid-template-columns: repeat(3,1fr); }
  .cert-grid { grid-template-columns: repeat(2,1fr); }
  .cu-values { grid-template-columns: 1fr; }
  .cu-values::before { display: none; }
  .cu-philosophy { grid-template-columns: 1fr; }
  .timeline-stage { grid-template-columns: 1fr; gap: 16px; }
}
@media (max-width: 600px) {
  .profile-mini-cards, .cert-grid { grid-template-columns: 1fr; }
  .ts-event { flex-direction: column; gap: 4px; }
}

/* --- 历史时间线轮播式 --- */
.history-tl { position: relative; min-height: max(78vh, 850px); padding: 0; overflow: visible; background: #4a3d6e; }
.history-tl::before { content: ""; position: absolute; left: var(--line-x, 50%); top: 0; bottom: 0; width: 2px; transform: translateX(-50%); z-index: 1; background: linear-gradient(180deg, transparent 0%, rgba(255,255,255,.3) 18%, rgba(255,255,255,.5) 50%, rgba(255,255,255,.3) 82%, transparent 100%); }
.history-bg { position: absolute; inset: 0; background: url('../images/about/history-bg.png') center/cover no-repeat !important; z-index: 0; }
.history-bg::after { content: ''; position: absolute; inset: 0; background: rgba(0,0,0,.15); z-index: 1; }

/* 标题：与 breadcrumb 首页图标完全对齐（container 86%/1400px 居中 + 24px padding） */
.history-title { position: absolute; left: max(calc((100% - 1400px) / 2 + 24px), calc(7% + 24px)); top: calc(50% - 398px); z-index: 3; color: #fff; }
.history-title h2 { font-size: 34px; font-weight: 700; letter-spacing: 4px; }
.history-title .accent-bar { width: 36px; height: 3px; background: var(--primary); margin-top: 12px; }

/* 时间线轨道：随页面滚动（absolute），视口 500px 显示 3 行 */
.history-track {
  position: absolute; z-index: 2;
  left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 1080px; height: 500px; overflow: hidden;
  opacity: 0;   /* JS 定位完成后显示，消除初始居中→左移的跳动 */
}
.history-track.aligned { opacity: 1; transition: opacity .3s ease; }
.history-track .ht-rows { display: flex; flex-direction: column; gap: 40px; will-change: transform; padding-top: 0; }

.ht-row {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 180px 60px 1fr; align-items: center;
  height: 140px; min-height: 140px; max-height: 140px; overflow: hidden;
  transition: all .35s ease;
}
.ht-year { text-align: right; padding-right: 20px; color: rgba(255,255,255,.6); font-size: 25px; font-weight: 700; white-space: nowrap; transition: all .35s ease; }
.ht-desc { text-align: left; padding-left: 24px; color: rgba(255,255,255,.6); font-size: 18px; line-height: 1.5; transition: all .35s ease; }
/* 阶段节点：文字全在右侧 */
.ht-stage-row .ht-desc { display: flex; align-items: center; }
.ht-stagetitle { font-size: 22px; font-weight: 700; color: rgba(255,255,255,.85); transition: all .35s ease; }
.ht-stage-row.active .ht-desc { font-size: 23px; font-weight: 600; }
.ht-stage-row.active .ht-stagetitle { font-size: 28px; }
.ht-dot {
  width: 14px; height: 14px; border-radius: 50%; background: rgba(200,16,46,.6); margin: 0 auto;
  transition: all .35s ease;
}
.ht-dot::before { content: ''; display: block; width: 6px; height: 6px; border-radius: 50%; background: #fff; margin: 4px; transition: all .35s ease; }

/* 选中（中间）行放大突出 */
.ht-row.active .ht-dot { width: 26px; height: 26px; background: var(--primary); box-shadow: 0 0 0 8px rgba(200,16,46,.28), 0 0 28px rgba(200,16,46,.6); }
.ht-row.active .ht-dot::before { width: 11px; height: 11px; margin: 7.5px; }
.ht-row.active .ht-year { color: #fff; font-size: 36px; font-weight: 800; }
.ht-row.active .ht-desc { color: rgba(255,255,255,.95); font-size: 23px; font-weight: 600; }
/* 上下按钮：在时间线延长线上 */
.history-nav {
  position: absolute; left: 50%; transform: translateX(-50%);
  width: 46px; height: 46px; border-radius: 50%;
  border: 2px solid var(--primary); background: var(--primary);
  color: #fff; font-size: 14px;
  cursor: pointer; z-index: 5; box-shadow: 0 4px 16px rgba(200,16,46,.4);
  transition: background .25s ease, transform .25s ease;
  display: flex; align-items: center; justify-content: center; padding: 0;
  opacity: 0;   /* JS 定位完成后显示，消除初始居中→左移的跳动 */
}
.history-nav.aligned { opacity: 1; transition: background .25s ease, transform .25s ease, opacity .3s ease; }
.history-nav:hover { background: var(--primary-dark); transform: translateX(-50%) scale(1.1); }
.hnav-up { top: calc(50% - 375px); }
.hnav-down { bottom: calc(50% - 375px); }

.history-rail::-webkit-scrollbar { width: 4px; }
.history-rail::-webkit-scrollbar-thumb { background: rgba(255,255,255,.3); border-radius: 2px; }
.hr-item {
  text-align: center; padding: 6px 16px; color: rgba(255,255,255,.5);
  cursor: pointer; transition: all .25s ease; border-radius: 4px;
  font-size: 13px;
}
.hr-item:hover { color: rgba(255,255,255,.85); }
.hr-item.active { color: var(--primary); font-weight: 700; font-size: 15px; background: rgba(200,16,46,.12); }

@media (max-width: 768px) {
  .ht-year { font-size: 16px; }
  .ht-desc { font-size: 12px; }
  .ht-row { gap: 8px; }
  .ht-row.active .ht-year { font-size: 20px; }
  .ht-row.active .ht-desc { font-size: 13px; }
  .history-track { width: 100%; }
  .history-title { left: calc(50% - 200px); top: 16%; }
  .history-title h2 { font-size: 26px; }
  .hnav-up { top: 80px; }
  .hnav-down { bottom: 80px; }
  .history-nav { width: 38px; height: 38px; font-size: 12px; }
}

/* === 资质认证灯箱预览 === */
.cert-lightbox { position: fixed; inset: 0; z-index: 9999; display: flex; align-items: center; justify-content: center; animation: clbFade .25s ease; }
.clb-overlay { position: absolute; inset: 0; background: rgba(0,0,0,.88); }
.clb-stage { position: relative; z-index: 1; max-width: 80vw; max-height: 78vh; display: flex; flex-direction: column; align-items: center; }
.clb-img { max-width: 80vw; max-height: 72vh; object-fit: contain; border-radius: 8px; box-shadow: 0 16px 48px rgba(0,0,0,.5); }
.clb-cap { margin-top: 14px; color: #fff; font-size: 14px; text-align: center; opacity: .9; }
.clb-close { position: absolute; top: 24px; right: 32px; width: 44px; height: 44px; border-radius: 50%; background: rgba(255,255,255,.12); border: none; color: #fff; font-size: 28px; cursor: pointer; z-index: 2; transition: all .2s ease; }
.clb-close:hover { background: rgba(255,255,255,.25); transform: rotate(90deg); }
.clb-prev, .clb-next { position: absolute; top: 50%; transform: translateY(-50%); width: 56px; height: 56px; border-radius: 50%; background: rgba(255,255,255,.12); border: none; color: #fff; font-size: 32px; cursor: pointer; z-index: 2; transition: all .2s ease; display: flex; align-items: center; justify-content: center; padding: 0; line-height: 1; }
.clb-prev { left: 32px; }
.clb-next { right: 32px; }
.clb-prev:hover, .clb-next:hover { background: rgba(255,255,255,.25); }
.clb-counter { position: absolute; bottom: 130px; left: 50%; transform: translateX(-50%); color: rgba(255,255,255,.65); font-size: 13px; letter-spacing: 1px; z-index: 2; }
.clb-thumbs { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; max-width: 80vw; overflow-x: auto; padding: 8px; z-index: 2; }
.clb-thumbs::-webkit-scrollbar { height: 4px; }
.clb-thumbs::-webkit-scrollbar-thumb { background: rgba(255,255,255,.3); border-radius: 2px; }
.clb-thumb { width: 64px; height: 64px; border-radius: 4px; overflow: hidden; cursor: pointer; border: 2px solid transparent; transition: all .2s ease; flex-shrink: 0; background: rgba(255,255,255,.06); }
.clb-thumb img { width: 100%; height: 100%; object-fit: cover; }
.clb-thumb:hover { border-color: rgba(255,255,255,.5); }
.clb-thumb.active { border-color: var(--primary); }
@keyframes clbFade { from { opacity: 0; } to { opacity: 1; } }

/* ============================================================
   移动端适配（≤768px 平板/大屏手机，≤480px 手机）
   ============================================================ */
@media (max-width: 768px) {
  /* 容器与 header 紧凑 */
  .container { width: 100%; padding: 0 16px; }
  .header-inner { padding: 0 14px; }
  .header-right { gap: 8px; }
  .header-right .lang-switch .lang-item { padding: 4px 6px; font-size: 14px; }
  .header { --header-height: 60px; }

  /* 区块纵向间距收窄 */
  .industry-section, .products-section, .advantages-section,
  .network-section, .partners-section, .about-section, .cu-module { padding: 48px 0; }
  .products-page, .pd-intro, .pd-selector, .pd-other,
  .sol-content, .sol-detail-main, .contact-content { padding: 32px 0 48px; }
  .news-list, .news-detail { padding: 24px 0 48px; }
  .culture-section { padding: 0 0 48px; }
  .footer { padding-top: 40px; }

  /* 关键多列布局 → 单列（含覆盖内联 grid 样式） */
  .pdv2-card-grid { grid-template-columns: 1fr !important; gap: 24px !important; }
  .pdv2-card-params { grid-template-columns: 1fr; }
  .pdv2-card-apps { grid-template-columns: repeat(2, 1fr); }
  .sol-layout, .sol-layout.drone-layout { grid-template-columns: 1fr; gap: 16px; }
  .sol-panel-right, .sol-panel-left { margin-top: 0 !important; }
  .cu-philosophy-content { grid-template-columns: 1fr; gap: 24px; }
  .news-detail .article-images { grid-template-columns: 1fr; }
  .network-stats-row { grid-template-columns: repeat(3, 1fr); gap: 16px; }

  /* 卡片内边距收窄 */
  .pdv2-deriv-card { grid-template-columns: 1fr; padding: 20px 16px; }
  .pdv2-card-main { padding: 24px 0 28px; }
  .case-study-wrap, .timeline-wrap, .culture-banner { padding: 24px 16px; }
  .news-detail .article-card { padding: 24px 18px; }
  .contact-info-card { padding: 24px 18px; }
  .cu-position-content, .cu-vision-content, .cu-slogan-content { padding: 32px 16px; }
  .cu-mission-content { padding: 48px 16px; }

  /* 图片不溢出 */
  .news-detail .article-images img { min-width: 0 !important; flex: 1 1 100% !important; }
  img { max-width: 100%; }

  /* 标题字号 */
  .hero-content h1 { font-size: 26px; }
  .page-banner-content h1, .news-banner-content h1, .contact-banner-content h1 { font-size: 22px; }
}

@media (max-width: 480px) {
  .container { padding: 0 14px; }
  .product-series-grid, .product-grid, .advantages-grid,
  .cert-grid, .cert-grid-4, .culture-values, .case-study,
  .profile-mini-cards, .network-stats-row { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; }
  .pdv2-card-apps { grid-template-columns: 1fr; }
  .hero-content h1 { font-size: 22px; }
  .page-banner-content h1, .news-banner-content h1, .contact-banner-content h1 { font-size: 20px; }
}

/* 移动端标题字号收敛（避免长标题 / 大字号溢出屏幕） */
@media (max-width: 768px) {
  .section-title-row h2,
  .pd-info h1,
  .pdv2-card-title,
  .sol-header h2,
  .sol-detail-head h1,
  .sol-detail-head h2,
  .timeline-wrap .header h2,
  .timeline-header h2,
  .profile-title { font-size: 22px; letter-spacing: .5px; }
  .about-intro-grid .left h2 { font-size: 23px; }
  .culture-banner h3 { font-size: 24px; letter-spacing: 1px; }
  .cu-core-head h2 { font-size: 24px; letter-spacing: 2px; }
  .cu-slogan-content h2 { font-size: 26px; letter-spacing: 2px; }
  .news-list .news-date .day { font-size: 32px; }
  .partners-summary .ps-num { font-size: 26px; }
  .page-banner-content .en { font-size: 12px; letter-spacing: 3px; }
}

/* about-nav（关于我们子页 tab 条）移动端横向滚动，避免撑破页面 */
@media (max-width: 768px) {
  .about-nav-inner { width: 100%; max-width: none; overflow-x: auto; padding: 6px 14px; scrollbar-width: none; -webkit-overflow-scrolling: touch; }
  .about-nav-inner::-webkit-scrollbar { display: none; }
  .about-nav a { padding: 9px 16px; font-size: 13px; flex-shrink: 0; }
}

/* 其余移动端溢出修复 */
@media (max-width: 768px) {
  /* 解决方案-机器人页：面板位移归零 */
  .sol-layout.robot-layout .sol-panel-left,
  .sol-layout.robot-layout .sol-panel-right-stack { transform: none; }
  /* 企业文化：底部价值观条 2 列改单列，去掉固定 235px */
  .cu-values-foot { grid-template-columns: 1fr; gap: 10px; }
  .cu-values-foot span { width: auto; }
  .cu-values-foot span:first-child, .cu-values-foot span:last-child { text-align: center; }
  /* 发展历程：轨道左偏移归零（JS 会设内联 left，需 !important） */
  .history-track { left: 0 !important; }
}

/* 小屏 header：缩小 logo / 收紧间距，保证 hamburger 不被挤出屏幕 */
@media (max-width: 768px) {
  .logo img { height: 32px; }
  .header-right { gap: 8px; }
  /* 用具体属性过渡，避免 header 上 transition:all 引发的展开闪烁 */
  .header { transition: background .25s ease, box-shadow .25s ease; }
  /* 移动端去掉 backdrop-filter（blur 在部分手机 WebView 上展开菜单会闪屏） */
  .header, .header:hover, .header.solid { backdrop-filter: none; -webkit-backdrop-filter: none; }
}
@media (max-width: 480px) {
  .logo img { height: 27px; }
  .header-right .lang-switch .lang-item { padding: 4px 5px; font-size: 13px; }
  .header-right .search-icon img { width: 16px; height: 16px; }
  .menu-toggle { padding: 6px; }
  .nav-list a { padding: 14px 20px; font-size: 15px; }
}

/* 移动端抽屉菜单是深色底，一级菜单项文字必须用浅色。
   注意用 `> li > a` 限定为一级项，避免误伤下拉子菜单（白底）里的链接。
   用 !important 覆盖 .transparent/.solid/.hover 各状态下 active 的红色 */
@media (max-width: 960px) {
  .header .nav-list > li > a { color: rgba(255, 255, 255, .85) !important; }
  .header .nav-list > li > a:hover,
  .header .nav-list > li > a.active { color: #fff !important; background: var(--primary) !important; }
  .header .nav-list > li > a.active::after { display: none !important; }
}

/* 下拉子菜单背景是白色，链接必须用深色。
   否则会被 .header.transparent .nav-list a（浅色，特异性更高）波及 —— 白底白字看不见 */
.header .nav-list .dropdown-menu a,
.header .nav-list .nav-mega .mega-col a { color: var(--text-primary) !important; }
.header .nav-list .dropdown-menu a:hover,
.header .nav-list .nav-mega .mega-col a:hover { color: var(--primary) !important; background: rgba(200,16,46,.06) !important; }

/* 移动端抽屉里的下拉菜单：改「静态展开 + 自适应宽度 + 深色底」，
   避免桌面尺寸（.dropdown-mega min-width:560px / 4 列）超出屏幕被截断 */
@media (max-width: 960px) {
  .nav-mega .dropdown-mega,
  .nav-dropdown .dropdown-menu {
    position: static; min-width: 0; width: auto; left: auto; top: auto;
    margin: 6px 16px 10px; padding: 12px 14px;
    background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .08);
    box-shadow: none; border-radius: 8px;
  }
  .nav-mega .dropdown-mega-grid { grid-template-columns: 1fr; gap: 14px; }
  /* 深色底 → 分组标题与链接改浅色 */
  .nav-mega .mega-col h4 { color: #fff !important; font-size: 13px; margin-bottom: 6px; white-space: normal; }
  .header .nav-list .nav-mega .mega-col a { color: rgba(255, 255, 255, .8) !important; font-size: 13px; padding: 5px 0; white-space: normal; }
  .header .nav-list .nav-mega .mega-col a:hover { color: #fff !important; background: transparent !important; }
  .header .nav-list .dropdown-menu a { color: rgba(255, 255, 255, .8) !important; }
  .header .nav-list .dropdown-menu a:hover { color: #fff !important; background: rgba(255, 255, 255, .06) !important; }
}