/* ============================================
   纯利水处理 ChunLi Water - 共享样式
   基于Ardot设计稿生成
   ============================================ */

/* ========== CSS Reset ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-bg-warm);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }

/* ========== 设计 Token 变量 ========== */
:root {
  /* 颜色 */
  --color-primary: #0A3D62;
  --color-primary-deep: #062C4F;
  --color-primary-light: #3F6299;
  --color-secondary: #3DC4D4;
  --color-secondary-light: #C7E8ED;
  --color-accent: #3CC4D0;
  --color-bg-warm: #FAF8F4;
  --color-bg-section: #E8F0F5;
  --color-bg-card: #FFFFFF;
  --color-text-primary: #0A2540;
  --color-text-secondary: #5A6B7B;
  --color-text-muted: #8B9DAD;
  --color-text-on-dark: #FFFFFF;
  --color-border: #E0E7ED;
  --color-border-strong: #A5B6C4;
  --color-success: #2ECC71;

  /* 间距 */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 40px;
  --spacing-xl: 64px;
  --spacing-2xl: 96px;
  --spacing-3xl: 128px;

  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  /* 字号 */
  --font-display: 56px;
  --font-h1: 44px;
  --font-h2: 32px;
  --font-h3: 24px;
  --font-h4: 20px;
  --font-body-lg: 18px;
  --font-body: 16px;
  --font-sm: 14px;
  --font-xs: 12px;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(10, 37, 64, 0.06);
  --shadow-md: 0 4px 12px rgba(10, 37, 64, 0.08);
  --shadow-lg: 0 12px 32px rgba(10, 37, 64, 0.12);

  /* 顶部导航高度（吸顶元素需按它偏移，避免被导航盖住） */
  --header-h: 80px;
}

/* ========== 通用容器 ========== */
.container {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding-left: 60px;
  padding-right: 60px;
}

.section {
  padding-top: 80px;
  padding-bottom: 80px;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--color-secondary);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: var(--font-h1);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: var(--font-body-lg);
  color: var(--color-text-secondary);
  max-width: 900px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ========== Header 导航 ========== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg-card);
  height: var(--header-h);
  display: flex;
  align-items: center;
  padding: 0 60px;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-icon {
  height: 44px;
  width: auto;
  max-width: 150px;
  border-radius: var(--radius-md);
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}

.logo-icon img {
  height: 100%;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}

.logo-icon svg { width: 24px; height: 24px; }

.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
}

.logo-text-en {
  font-size: 10px;
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 1.5px;
  display: block;
}

.nav {
  display: flex;
  align-items: center;
  gap: 36px;
  flex: 1;
  justify-content: center;
}

.nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.2s;
  position: relative;
}

.nav a:hover { color: var(--color-primary); }

.nav a.active {
  color: var(--color-primary);
  font-weight: 600;
}

.nav a.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-secondary);
  border-radius: 1px;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  background: var(--color-secondary);
  color: var(--color-text-on-dark);
  font-size: 14px;
  font-weight: 600;
  transition: background 0.2s, transform 0.2s;
  flex-shrink: 0;
}

.header-cta:hover { background: #34b5c4; transform: translateY(-1px); }

/* ========== Hero 主视觉 ========== */
.hero {
  background: var(--color-primary-deep);
  color: var(--color-text-on-dark);
  padding: 80px 60px;
  position: relative;
  overflow: hidden;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: var(--color-secondary);
  font-size: 13px;
  font-weight: 500;
  align-self: flex-start;
}

.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-text-on-dark);
}

.hero-main {
  display: flex;
  align-items: center;
  gap: 60px;
}

.hero-left {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.hero-title {
  font-size: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
}

.hero-title-sub {
  font-size: 48px;
  font-weight: 300;
  color: var(--color-secondary);
  line-height: 1.1;
}

.hero-desc {
  font-size: 17px;
  color: #CFE0EC;
  line-height: 1.6;
  max-width: 600px;
}

.hero-cta-group {
  display: flex;
  gap: 16px;
  align-items: center;
}

.hero-visual {
  width: 520px;
  height: 420px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--color-primary);
}

.hero-visual img { width: 100%; height: 100%; object-fit: cover; }

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 32px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  transition: all 0.2s;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-secondary);
  color: var(--color-text-on-dark);
}

.btn-primary:hover { background: #34b5c4; transform: translateY(-2px); }

.btn-secondary {
  background: transparent;
  color: var(--color-text-on-dark);
  border: 1.5px solid rgba(61, 196, 212, 0.6);
}

.btn-secondary:hover { background: rgba(61, 196, 212, 0.1); }

.btn-dark {
  background: var(--color-primary);
  color: var(--color-text-on-dark);
}

.btn-dark:hover { background: var(--color-primary-deep); transform: translateY(-2px); }

/* ========== 信任栏 ========== */
.trust-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.trust-item {
  text-align: center;
}

.trust-num {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-secondary);
  line-height: 1;
}

.trust-label {
  font-size: 13px;
  color: #A0B5C5;
  margin-top: 4px;
}

/* ========== 核心优势卡片 ========== */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.advantage-card {
  background: var(--color-bg-section);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.advantage-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
}

.advantage-icon svg { width: 32px; height: 32px; }

.advantage-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.advantage-data {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.advantage-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ========== 工艺流程图 ========== */
.flow-chart {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.flow-step {
  text-align: center;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.flow-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.flow-icon svg { width: 40px; height: 40px; }

.flow-icon.primary { background: var(--color-primary); }
.flow-icon.secondary { background: var(--color-secondary); }

.flow-label {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
}

.flow-desc {
  font-size: 11px;
  color: var(--color-text-muted);
}

.flow-arrow {
  font-size: 24px;
  color: var(--color-text-muted);
  padding: 0 8px;
}

/* ========== 产品卡片 ========== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--color-bg-section);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}

.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.product-image {
  width: 100%;
  height: 240px;
  background: var(--color-primary);
  display: flex;
  align-items: flex-end;
  padding: 20px;
  color: var(--color-text-on-dark);
}

.product-image img { width: 100%; height: 100%; object-fit: cover; }

/* ============================================
   图片完整显示且无白边（首页产品/案例卡 + 产品中心列表）
   全图 contain 居中（::after），空隙不垫白底，而是垫同一张图
   放大高斯模糊后的虚化层（::before）——边缘是图片自身颜色的
   延续，既看到完整设备，又不会出现白边条（信箱模式做法）。
   用法：容器加 .img-fill，图片由 JS 写入 background-image。
   ============================================ */
.img-fill {
  position: relative;
  isolation: isolate;   /* 让负 z-index 伪元素留在本卡片内，不漏到页面底下 */
  overflow: hidden;     /* 兜底：老浏览器 */
  overflow: clip;       /* 裁切但不产生可滚动溢出——垫底层 36px 出血不会虚增 scrollWidth */
}
.img-fill::before,
.img-fill::after {
  content: '';
  position: absolute;
  background-image: inherit;   /* 继承容器由 JS 设置的 background-image */
  background-repeat: no-repeat;
  background-position: center;
  pointer-events: none;
}
.img-fill::before {
  /* 垫底层：同图 cover 拉满 + 高斯模糊 + 压暗，向外出血避免模糊边缘发虚 */
  inset: -36px;
  z-index: -2;
  background-size: cover;
  filter: blur(26px) brightness(.85) saturate(1.12);
  transform: scale(1.06);
}
.img-fill::after {
  /* 前景层：全图完整显示，居中不裁剪 */
  inset: 0;
  z-index: -1;
  background-size: contain;
}

.product-body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* 产品列表卡：型号行（图片下方，独立于照片，避免被照片边缘横穿） */
.product-model {
  align-self: flex-start;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--color-primary-deep);
  background: rgba(61, 196, 212, 0.12);
  border-radius: 6px;
  padding: 4px 10px;
}

.product-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
}

.product-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.product-spec {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-secondary);
}

.product-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  margin-top: 4px;
}

.product-link:hover { color: var(--color-secondary); }

/* ========== 行业解决方案卡片 ========== */
.solution-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.solution-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}

.solution-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.solution-top {
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  font-weight: 700;
  color: var(--color-text-on-dark);
}

.solution-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.solution-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
}

.solution-req {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-secondary);
}

.solution-desc {
  font-size: 12px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ========== 案例卡片 ========== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}

.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.case-image {
  height: 200px;
  display: flex;
  align-items: flex-end;
  padding: 20px;
  color: var(--color-text-on-dark);
}

.case-image img { width: 100%; height: 100%; object-fit: cover; }

.case-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.case-tag {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-secondary);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.case-data {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

.case-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ========== 服务卡片 ========== */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  color: var(--color-text-on-dark);
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-icon svg { width: 32px; height: 32px; }

.service-title {
  font-size: 22px;
  font-weight: 700;
}

.service-desc {
  font-size: 13px;
  color: #CFE0EC;
  line-height: 1.6;
}

/* ========== CTA 区块 ========== */
.cta-section {
  background: var(--color-primary);
  color: var(--color-text-on-dark);
  padding: 60px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.cta-title {
  font-size: 36px;
  font-weight: 700;
}

.cta-subtitle {
  font-size: 16px;
  color: #CFE0EC;
  max-width: 900px;
}

.cta-button-group {
  display: flex;
  gap: 16px;
  align-items: center;
}

/* ========== Footer ========== */
.footer {
  background: #0A1A2A;
  color: var(--color-text-on-dark);
  padding: 60px 60px 32px;
}

.footer-main {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand { max-width: 340px; }

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.footer-logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-on-dark);
}

.footer-desc {
  font-size: 13px;
  color: #8B9DAD;
  line-height: 1.6;
}

.footer-col { min-width: 160px; }

/* 信息共享快捷栏（第 4 栏，稍窄，避免挤占品牌区） */
.footer-col--info { min-width: 132px; }
.footer-col--info a:first-of-type { color: #A9EDF5; }

.footer-col-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-on-dark);
  margin-bottom: 14px;
}

.footer-col a, .footer-col li {
  display: block;
  font-size: 13px;
  color: #8B9DAD;
  margin-bottom: 8px;
  transition: color 0.2s;
}

.footer-col a:hover { color: var(--color-secondary); }

/* 页脚联系方式：标签列 + 内容列对齐，号码可独立多行 */
.footer-contact {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 8px;
}

.fc-key {
  flex: 0 0 auto;
  min-width: 2.8em;
  text-align: right;
  color: #5A6B7B;
  white-space: nowrap;
}

.fc-key::after { content: '：'; }

.fc-val {
  flex: 1 1 auto;
  line-height: 1.7;
  word-break: break-word;
}

/* 页脚号码逐行显示（含号码后的联系人姓名） */
.fc-val .fc-num { display: block; }
.fc-val .fc-alt { display: block; }

/* 电话号码后的联系人姓名：弱化处理，突出号码本身 */
.c-person {
  margin-left: 0.4em;
  font-size: 0.85em;
  font-weight: 400;
  color: var(--color-text-secondary);
  white-space: nowrap;
}
.footer .c-person { color: #7C90A3; }

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 12px;
  color: #5A6B7B;
}

.footer-legal {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

/* 工信部备案号：醒目标签 + 链接备案管理系统 */
.beian-no {
  color: #8B9DAD;
  font-size: 12px;
  text-decoration: none;
  padding: 4px 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 4px;
  transition: color 0.2s, border-color 0.2s;
}
.beian-no:hover {
  color: var(--color-secondary);
  border-color: var(--color-secondary);
  text-decoration: none;
}

/* 公安备案：官方徽标图标 + 编号，与 ICP 备案标签同排同高 */
.beian-ps {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.beian-ps img {
  display: block;
  width: 14px;
  height: 14px;
  /* 徽标底色深，在深色页脚上补一圈浅描边避免糊在一起 */
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.25);
}

.footer-legal a:not(.beian-no) {
  color: #8B9DAD;
  font-size: 12px;
  text-decoration: none;
  transition: color 0.2s;
}
.footer-legal a:not(.beian-no):hover { color: var(--color-secondary); }

.footer-copy { color: #5A6B7B; }

/* ========== 广告位（js/ads.js 注入） ========== */
/* 默认隐藏：只有 js 注入内容后（.ad-slot--filled）才显示，
   保证「没贴代码 = 零布局影响」；注入后居中、限宽，不撑破版心 */
.ad-slot {
  display: none;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  text-align: center;
  overflow: hidden;
}
.ad-slot--filled {
  display: block;
  margin-top: 26px;
  margin-bottom: 26px;
}
.ad-slot--filled iframe,
.ad-slot--filled ins {
  max-width: 100% !important;
}

/* 移动端：备案栏竖向堆叠居中 */
@media (max-width: 768px) {
  .footer-bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 12px;
  }
  .footer-legal { justify-content: center; }
}

/* ========== 法律/协议页面（隐私政策、服务条款、网站地图） ========== */
.legal-page {
  max-width: 880px;
  margin: 0 auto;
  padding: 48px 24px 64px;
}
.legal-page .legal-header {
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}
.legal-page h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}
.legal-page .legal-updated {
  font-size: 13px;
  color: var(--color-text-secondary);
}
.legal-page h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin: 32px 0 12px;
}
.legal-page h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 20px 0 8px;
}
.legal-page p {
  font-size: 14px;
  line-height: 1.9;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}
.legal-page ul {
  /* 站点全局重置了 ul 的 list-style，法律正文需恢复圆点以提升可读性 */
  list-style: disc;
  margin: 0 0 16px 0;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--color-text-secondary);
}
.legal-page li { margin-bottom: 6px; }
.legal-page li::marker { color: var(--color-secondary); }
.legal-page a { color: var(--color-secondary); text-decoration: none; }
.legal-page a:hover { text-decoration: underline; }

/* 网站地图分组 */
.sitemap-group { margin-bottom: 28px; }
.sitemap-group h2 { margin-top: 0; }
.sitemap-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 24px;
}
.sitemap-list li {
  margin: 0;
  padding: 10px 14px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
}
.sitemap-list a { font-size: 14px; }
@media (max-width: 640px) {
  .sitemap-list { grid-template-columns: 1fr; }
}

/* ========== 分类筛选 ========== */
.filter-bar {
  background: var(--color-bg-card);
  padding: 32px 60px;
  display: flex;
  gap: 16px;
  align-items: center;
}

.filter-pill {
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg-section);
  transition: all 0.2s;
}

.filter-pill.active {
  background: var(--color-primary);
  color: var(--color-text-on-dark);
  font-weight: 600;
}

.filter-pill:hover { background: var(--color-secondary-light); }
.filter-pill.active:hover { background: var(--color-primary-light); }

/* ========== 对比表 ========== */
.compare-table {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.compare-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  align-items: center;
  height: 64px;
}

.compare-row.header {
  background: var(--color-primary);
  height: 60px;
}

.compare-row:nth-child(even):not(.header) {
  background: var(--color-bg-section);
}

.compare-cell {
  text-align: center;
  font-size: 14px;
}

.compare-row.header .compare-cell {
  color: var(--color-text-on-dark);
  font-size: 15px;
  font-weight: 700;
}

.compare-row.header .compare-cell:nth-child(3) {
  font-weight: 500;
  color: #CFE0EC;
}

.compare-cell:first-child { font-weight: 600; color: var(--color-text-primary); }
.compare-cell:nth-child(2) { font-size: 16px; font-weight: 700; color: var(--color-secondary); }
.compare-cell:nth-child(3) { color: var(--color-text-secondary); }

/* ========== 技术原理 ========== */
.principle-main {
  display: flex;
  gap: 40px;
  align-items: center;
}

.principle-image {
  width: 520px;
  height: 400px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-primary);
  flex-shrink: 0;
}

.principle-image img { width: 100%; height: 100%; object-fit: cover; }

.principle-points {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.principle-point {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--color-bg-section);
  border-radius: 12px;
}

.principle-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-secondary);
  flex-shrink: 0;
}

.principle-body { flex: 1; }

.principle-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.principle-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ========== 文章卡片 ========== */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.article-card {
  background: var(--color-bg-section);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.article-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.article-date {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-secondary);
  letter-spacing: 1px;
}

.article-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.3;
}

.article-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.article-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  margin-top: auto;
}

.article-link:hover { color: var(--color-secondary); }

/* ========== 联系信息卡片 ========== */
.contact-info-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.contact-info-card {
  background: var(--color-bg-section);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.contact-info-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-info-icon svg { width: 32px; height: 32px; }

.contact-info-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
}

.contact-info-value {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-secondary);
  /* 后台可换行：content.json 中的 \n 直接换行显示 */
  white-space: pre-line;
  line-height: 1.65;
  text-align: center;
  /* 统一两行高度，保证多张卡片的号码逐行平行对齐 */
  min-height: 52px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 100%;
}

/* 较长内容（邮箱、地址）用较小字号，仍保持同一基线 */
.contact-info-value.is-compact { font-size: 14px; }

.contact-info-desc {
  font-size: 12px;
  color: var(--color-text-secondary);
}

/* ========== 表单 ========== */
.form-main {
  display: flex;
  gap: 40px;
  align-items: flex-start;
}

.form-left {
  flex: 1;
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
}

.form-input {
  height: 48px;
  padding: 0 16px;
  border-radius: var(--radius-md);
  background: var(--color-bg-section);
  border: 1.5px solid transparent;
  font-size: 14px;
  color: var(--color-text-primary);
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-input:focus {
  outline: none;
  border-color: var(--color-secondary);
  background: var(--color-bg-card);
}

.form-textarea {
  min-height: 120px;
  padding: 16px;
  border-radius: var(--radius-md);
  background: var(--color-bg-section);
  border: 1.5px solid transparent;
  font-size: 14px;
  color: var(--color-text-primary);
  font-family: inherit;
  resize: vertical;
  transition: border-color 0.2s;
}

.form-textarea:focus {
  outline: none;
  border-color: var(--color-secondary);
  background: var(--color-bg-card);
}

.form-submit {
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-secondary);
  color: var(--color-text-on-dark);
  font-size: 16px;
  font-weight: 600;
  transition: background 0.2s, transform 0.2s;
}

.form-submit:hover { background: #34b5c4; transform: translateY(-2px); }

.form-right {
  width: 420px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-map {
  height: 280px;
  border-radius: var(--radius-lg);
  background: var(--color-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--color-text-on-dark);
}

/* 地图区地址文案：后台可换行，居中显示 */
.form-map-text {
  font-size: 14px;
  font-weight: 500;
  text-align: center;
  line-height: 1.7;
  white-space: pre-line;
}

.form-info-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-info-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
}

/* 公司信息：标签列 + 内容列，两列对齐；内容支持后台换行 */
.form-info-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.form-info-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  line-height: 1.7;
}

.form-info-label {
  flex: 0 0 auto;
  min-width: 4.5em;
  text-align: right;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.form-info-label::after { content: '：'; }

.form-info-value {
  flex: 1 1 auto;
  color: var(--color-text-primary);
  /* 支持换行：两个号码即独立两行 */
  white-space: pre-line;
  word-break: break-word;
}

/* ========== 页面 Hero ========== */
.page-hero {
  background: var(--color-primary-deep);
  color: var(--color-text-on-dark);
  padding: 80px 60px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.page-hero-tag {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--color-secondary);
  text-transform: uppercase;
}

.page-hero-title {
  font-size: var(--font-display);
  font-weight: 700;
}

.page-hero-desc {
  font-size: var(--font-body-lg);
  color: #CFE0EC;
  max-width: 900px;
  line-height: 1.6;
}

/* ========== 响应式 ========== */
@media (max-width: 1200px) {
  .container { padding-left: 40px; padding-right: 40px; }
  .header { padding: 0 40px; }
  .hero { padding: 60px 40px; }
  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .solution-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-info-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  /* 手机端把导航改造成"第二行可横向滑动"，不再直接隐藏：
     之前 .nav{display:none} 会让手机访客完全进不去产品中心/信息共享等栏目，
     对以手机访问为主的访客是致命的。此处保留全部入口，横向滑动即可看到。 */
  :root { --header-h: 108px; }
  .header { padding: 12px 20px; height: var(--header-h); }
  .header-inner { flex-wrap: wrap; gap: 12px; row-gap: 8px; }
  .nav {
    display: flex;
    order: 3;
    flex: 1 0 100%;
    justify-content: flex-start;
    gap: 18px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    border-top: 1px solid var(--color-border);
    padding-top: 9px;
  }
  .nav::-webkit-scrollbar { display: none; }
  .nav a {
    flex: 0 0 auto;
    font-size: 14px;
    white-space: nowrap;
    padding: 4px 0 8px;
  }
  .nav a.active::after { bottom: 0; }

  .container { padding-left: 20px; padding-right: 20px; }
  .hero { padding: 40px 20px; }
  .hero-main { flex-direction: column; }
  .hero-visual { width: 100%; height: 280px; }
  .hero-title { font-size: 36px; }
  .hero-title-sub { font-size: 28px; }
  .trust-bar { flex-wrap: wrap; gap: 24px; }
  .advantage-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .solution-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: 1fr; }
  .flow-chart { flex-direction: column; gap: 24px; }
  .flow-arrow { transform: rotate(90deg); }
  .principle-main { flex-direction: column; }
  .principle-image { width: 100%; height: 280px; }
  .article-grid { grid-template-columns: 1fr; }
  .contact-info-grid { grid-template-columns: 1fr; }
  .form-main { flex-direction: column; }
  .form-right { width: 100%; }
  .footer-main { flex-direction: column; }

/* ========== 产品中心：两级筛选 ========== */
.filter-bar {
  flex-direction: column;
  align-items: stretch;
  gap: 14px;
}
.filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.filter-group-label {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-right: 2px;
  white-space: nowrap;
}
.pp-pill {
  padding: 10px 22px;
  border: none;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg-section);
  transition: all 0.2s;
  cursor: pointer;
}
.pp-pill.active {
  background: var(--color-primary);
  color: var(--color-text-on-dark);
  font-weight: 600;
}
.pp-pill:hover { background: var(--color-secondary-light); }
.pp-pill.active:hover { background: var(--color-primary-light); }
.pp-pill.hidden { display: none; }

.result-count {
  font-size: 13px;
  color: var(--color-text-muted);
  padding-bottom: 4px;
}

.product-card {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}
  .footer-bottom { flex-direction: column; gap: 16px; }
  .compare-row { grid-template-columns: 1fr 1fr 1fr; }
  .page-hero-title { font-size: 36px; }
}

/* ============================================
   详情页样式（产品/文章/方案/案例）
   ============================================ */

/* 面包屑 */
.breadcrumb {
  padding: 20px 60px;
  background: var(--color-bg-warm);
  border-bottom: 1px solid var(--color-border);
  font-size: 13px;
  color: var(--color-text-muted);
}

.breadcrumb a { color: var(--color-primary); font-weight: 500; }
.breadcrumb a:hover { color: var(--color-secondary); }
.breadcrumb .sep { margin: 0 8px; color: var(--color-text-muted); }
.breadcrumb .current { color: var(--color-text-secondary); }

/* 详情 Hero */
.detail-hero {
  background: linear-gradient(135deg, var(--color-primary-deep), var(--color-primary) 70%, #123D5C);
  color: var(--color-text-on-dark);
  padding: 72px 60px;
  position: relative;
  overflow: hidden;
}

.detail-hero::after {
  content: '';
  position: absolute;
  right: -120px;
  top: -120px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(61, 196, 212, 0.12);
}

.detail-hero-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--color-secondary);
  margin-bottom: 14px;
}

.detail-hero-title {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.detail-hero-desc {
  font-size: 17px;
  color: #CFE0EC;
  max-width: 760px;
  line-height: 1.7;
  position: relative;
  z-index: 1;
}

/* 详情主容器 */
.detail-container {
  padding: 64px 60px;
  max-width: 1440px;
  margin: 0 auto;
}

.detail-layout {
  display: flex;
  gap: 48px;
  align-items: flex-start;
}

.detail-image-box {
  width: 520px;
  flex-shrink: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-section);
  aspect-ratio: 4 / 3;
}

.detail-image-box img { width: 100%; height: 100%; object-fit: contain; }

.detail-image-box.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 15px;
}

.detail-info { flex: 1; }

.detail-info h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.detail-summary {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
}

/* 详情关键数据 */
.detail-meta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.detail-meta-item {
  background: var(--color-bg-section);
  border-radius: 12px;
  padding: 16px;
}

.detail-meta-label { font-size: 12px; color: var(--color-text-muted); }
.detail-meta-value { font-size: 16px; font-weight: 600; color: var(--color-primary); margin-top: 4px; }

/* 参数表 */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-bg-card);
  border-radius: 12px;
  overflow: hidden;
  margin: 16px 0 32px;
}

.spec-table tr { border-bottom: 1px solid var(--color-border); }
.spec-table tr:last-child { border-bottom: none; }
.spec-table td { padding: 14px 20px; font-size: 14px; }
.spec-table td:first-child { width: 220px; font-weight: 600; color: var(--color-primary); background: #F8FAFB; }
.spec-table td:last-child { color: var(--color-text-secondary); }
.spec-table tr:nth-child(even) td:last-child { background: #FDFDFE; }

/* Section 标题 */
.detail-section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary);
  margin: 48px 0 24px;
  padding-left: 16px;
  border-left: 4px solid var(--color-secondary);
}

/* 特点网格 */
.detail-feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.detail-feature {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
  transition: box-shadow 0.2s, transform 0.2s;
}

.detail-feature:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }

.detail-feature-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.detail-feature-title::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-secondary);
}

.detail-feature-desc { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

/* 工艺流程图 */
.flow-box {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 28px;
  font-size: 15px;
  color: var(--color-text-primary);
  line-height: 2;
  margin-bottom: 32px;
}

.flow-box .flow-arrow { color: var(--color-secondary); font-weight: 700; margin: 0 4px; }

/* 亮点列表 */
.highlight-list { list-style: none; display: flex; flex-direction: column; gap: 14px; }

.highlight-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.highlight-list li::before {
  content: '✓';
  color: var(--color-secondary);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

/* 文章正文 */
.article-body { max-width: 860px; margin: 0 auto; }

.article-body p {
  font-size: 16px;
  color: var(--color-text-primary);
  line-height: 1.9;
  margin-bottom: 20px;
  text-indent: 2em;
}

.article-body h3 {
  font-size: 20px;
  color: var(--color-primary);
  margin: 32px 0 16px;
  font-weight: 700;
}

.article-info {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--color-text-muted);
  font-size: 13px;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

/* 相关推荐 */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.related-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
  transition: box-shadow 0.2s, transform 0.2s;
  text-decoration: none;
  display: block;
}

.related-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); border-color: var(--color-secondary); }

.related-card-title { font-size: 16px; font-weight: 700; color: var(--color-primary); margin-bottom: 8px; }

.related-card-desc { font-size: 13px; color: var(--color-text-secondary); line-height: 1.6; }

/* 项目设备全景（案例详情） */
.case-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 8px 0 8px;
}

.case-pano {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-section);
  aspect-ratio: 16 / 9;
  box-shadow: var(--shadow-sm);
}

.case-pano img { width: 100%; height: 100%; object-fit: contain; display: block; }

.case-pano.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 15px;
}

/* 产品图集（产品详情，参数下方 2 张） */
.product-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 8px 0 32px;
}

.product-shot {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-section);
  aspect-ratio: 4 / 3;
  box-shadow: var(--shadow-sm);
}

.product-shot img { width: 100%; height: 100%; object-fit: contain; display: block; }

.product-shot.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 15px;
}

/* 详情页CTA */
.detail-cta {
  text-align: center;
  padding: 60px;
  background: var(--color-primary);
  color: var(--color-text-on-dark);
}

.detail-cta-title { font-size: 32px; font-weight: 700; margin-bottom: 12px; }
.detail-cta-desc { font-size: 16px; color: #CFE0EC; margin-bottom: 24px; }
.detail-cta-buttons { display: flex; gap: 16px; justify-content: center; align-items: center; }

/* 详情页响应式 */
@media (max-width: 768px) {
  .breadcrumb { padding: 16px 20px; }
  .detail-hero { padding: 48px 20px; }
  .detail-hero-title { font-size: 32px; }
  .detail-container { padding: 40px 20px; }
  .detail-layout { flex-direction: column; }
  .detail-image-box { width: 100%; }
  .detail-meta-grid { grid-template-columns: 1fr; }
  .detail-feature-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .case-gallery { grid-template-columns: 1fr; }
  .product-gallery { grid-template-columns: 1fr; }
  .detail-cta { padding: 40px 20px; }
  .spec-table td:first-child { width: 120px; }
}

/* ============================================
   悬浮智能问答助手样式
   ============================================ */
#chatbot-root { position: fixed; right: 24px; bottom: 24px; z-index: 9999; font-family: inherit; }

#chatbot-btn {
  width: 60px; height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3DC4D4, #0A3D62);
  border: none;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(10, 61, 98, 0.35);
  display: flex; align-items: center; justify-content: center;
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
}

#chatbot-btn:hover { transform: scale(1.08); box-shadow: 0 12px 32px rgba(10, 61, 98, 0.45); }
#chatbot-btn.open { display: none; }
#chatbot-btn svg { width: 30px; height: 30px; }

.chatbot-btn-dot {
  position: absolute; top: 2px; right: 2px;
  width: 14px; height: 14px; border-radius: 50%;
  background: #2ECC71; border: 2px solid #fff;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(46, 204, 113, 0.5); }
  50% { box-shadow: 0 0 0 6px rgba(46, 204, 113, 0); }
}

#chatbot-panel {
  position: fixed; right: 24px; bottom: 24px;
  width: 360px; max-height: 560px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(10, 37, 64, 0.25);
  overflow: hidden;
  flex-direction: column;
  animation: chatIn 0.25s ease;
  font-size: 14px;
}

@keyframes chatIn {
  from { opacity: 0; transform: translateY(16px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.chatbot-header {
  background: linear-gradient(135deg, #0A3D62, #123D5C);
  color: #fff;
  padding: 14px 16px;
  display: flex; align-items: center; gap: 12px;
}

.chatbot-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: #3DC4D4;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}

.chatbot-avatar svg { width: 22px; height: 22px; }

.chatbot-header-info { flex: 1; }
.chatbot-name { font-size: 14px; font-weight: 700; }
.chatbot-status { font-size: 11px; color: #A0D8E0; display: flex; align-items: center; gap: 4px; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: #2ECC71; display: inline-block; }

.chatbot-close {
  background: none; border: none; color: #CFE0EC;
  font-size: 22px; cursor: pointer; line-height: 1;
  padding: 4px;
}
.chatbot-close:hover { color: #fff; }

.chatbot-msgs {
  flex: 1; overflow-y: auto;
  padding: 16px; min-height: 260px; max-height: 340px;
  background: #F7FAFB;
  display: flex; flex-direction: column; gap: 12px;
}

.chatbot-msg { display: flex; gap: 8px; }
.chatbot-msg.user { justify-content: flex-end; }

.chatbot-msg-avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: #3DC4D4; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.chatbot-msg-avatar svg { width: 16px; height: 16px; }

.chatbot-msg-bubble {
  max-width: 78%;
  padding: 10px 14px;
  border-radius: 12px;
  line-height: 1.6;
  font-size: 13px;
  word-break: break-word;
}

.chatbot-msg.bot .chatbot-msg-bubble {
  background: #fff; color: #0A2540;
  border: 1px solid #E0E7ED;
  border-top-left-radius: 4px;
}

.chatbot-msg.user .chatbot-msg-bubble {
  background: linear-gradient(135deg, #0A3D62, #123D5C);
  color: #fff;
  border-top-right-radius: 4px;
}

.chatbot-quick {
  padding: 8px 12px;
  background: #fff;
  display: flex; flex-wrap: wrap; gap: 8px;
  border-top: 1px solid #F0F3F5;
}

.chatbot-chip {
  background: #EDF7FA; color: #0A3D62;
  border: 1px solid #C7E8ED; border-radius: 999px;
  padding: 5px 12px; font-size: 12px; cursor: pointer;
  transition: all 0.15s;
}
.chatbot-chip:hover { background: #3DC4D4; color: #fff; border-color: #3DC4D4; }

.chatbot-input-row {
  display: flex; gap: 8px;
  padding: 10px 12px;
  background: #fff;
  border-top: 1px solid #F0F3F5;
}

.chatbot-input-row input {
  flex: 1;
  border: 1.5px solid #E0E7ED;
  border-radius: 8px;
  padding: 9px 12px;
  font-size: 13px;
  outline: none;
  font-family: inherit;
  transition: border-color 0.2s;
}
.chatbot-input-row input:focus { border-color: #3DC4D4; }

.chatbot-send {
  background: #0A3D62; color: #fff;
  border: none; border-radius: 8px;
  padding: 0 16px; font-size: 13px; font-weight: 600;
  cursor: pointer; transition: background 0.2s;
}
.chatbot-send:hover { background: #062C4F; }

@media (max-width: 480px) {
  #chatbot-panel { width: calc(100vw - 32px); right: 16px; bottom: 16px; }
  #chatbot-btn { right: 16px; bottom: 16px; }
}

/* ============================================
   关于我们页面样式
   ============================================ */

/* 公司简介布局 */
.about-intro {
  display: flex;
  gap: 48px;
  align-items: center;
}

.about-intro-left { flex: 1; }
.about-intro-right { width: 440px; flex-shrink: 0; }

.about-summary {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-text {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.9;
  margin-bottom: 14px;
}

.about-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #eef3f8, #dce8f2);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  /* 完整显示上传图，不裁切（覆盖 content-loader 行内 cover） */
  background-size: contain !important;
  background-repeat: no-repeat !important;
  background-position: center !important;
}

.about-img img { width: 100%; height: 100%; object-fit: cover; }
.about-img.placeholder { color: rgba(255,255,255,0.7); font-size: 15px; }

/* 经营数据 */
.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.about-stat {
  background: var(--color-bg-card);
  border-radius: 16px;
  padding: 36px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}

.about-stat:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.about-stat-num {
  font-size: 40px;
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: 8px;
}

.about-stat-label { font-size: 14px; color: var(--color-text-secondary); }

/* 经营范围 */
.business-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.business-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 28px;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.business-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-secondary);
}

.business-card-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--color-bg-section);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
}

.business-card-title { font-size: 16px; font-weight: 700; color: var(--color-primary); margin-bottom: 8px; }
.business-card-desc { font-size: 13px; color: var(--color-text-secondary); line-height: 1.7; }

/* 经营理念 */
.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.philosophy-card {
  background: var(--color-primary);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
  transition: transform 0.2s;
}

.philosophy-card:hover { transform: translateY(-4px); }

.philosophy-icon {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--color-secondary);
  margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px;
}

.philosophy-title { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.philosophy-desc { font-size: 13px; color: #CFE0EC; line-height: 1.7; }

/* 发展历程时间线 */
.timeline {
  position: relative;
  padding-left: 40px;
  max-width: 860px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 14px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-secondary), var(--color-primary));
}

.timeline-item {
  position: relative;
  padding-bottom: 36px;
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-dot {
  position: absolute;
  left: -40px; top: 4px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--color-secondary);
  box-shadow: 0 0 0 4px rgba(61, 196, 212, 0.15);
}

.timeline-year {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: 4px;
}

.timeline-title { font-size: 16px; font-weight: 700; color: var(--color-primary); margin-bottom: 6px; }
.timeline-desc { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

/* ========== 关于页 · 联系方式 ========== */
.about-contact { max-width: 760px; margin: 0 auto; }
.about-contact-box {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 32px 36px;
}
.about-contact-text {
  font-size: 15px;
  line-height: 2;          /* 行距放大，配合换行更清晰 */
  color: var(--color-text);
  white-space: pre-line;   /* 后台换行（\n）在前台正确显示为换行 */
  word-break: break-all;
}
.about-contact-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 28px;
}

/* 关于页响应式 */
@media (max-width: 768px) {
  .about-intro { flex-direction: column; }
  .about-intro-right { width: 100%; }
  .about-stats { grid-template-columns: repeat(2, 1fr); }
  .business-grid { grid-template-columns: 1fr 1fr; }
  .philosophy-grid { grid-template-columns: 1fr; }
  .timeline { padding-left: 32px; }
  .timeline-dot { left: -32px; }
}

/* ============================================
   首页 · 信息共享入口区块
   （放在全站样式表而非 info.css，避免首页加载整份栏目样式）
   ============================================ */
.if-home-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: center;
  background: linear-gradient(135deg, #062C4F 0%, #0A3D62 42%, #0E5178 78%, #0F6A8A 100%);
  border-radius: var(--radius-xl);
  padding: 38px 44px;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.if-home-entry::after {
  content: '';
  position: absolute;
  right: -60px;
  top: -60px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(61, 196, 212, 0.3), transparent 68%);
  pointer-events: none;
}

.if-home-entry-txt { position: relative; z-index: 2; }

.if-home-entry-title {
  font-size: 25px;
  font-weight: 800;
  margin-bottom: 10px;
}

.if-home-entry-desc {
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.76);
  max-width: 640px;
}

.if-home-entry-chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.if-home-entry-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  font-weight: 600;
  padding: 5px 13px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #CFEFF4;
}

.if-home-entry-act { position: relative; z-index: 2; }

.if-home-entry-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: var(--radius-pill);
  background: var(--color-secondary);
  color: #062C4F;
  font-size: 15px;
  font-weight: 700;
  transition: all 0.22s ease;
  white-space: nowrap;
}

.if-home-entry-btn:hover {
  background: #fff;
  transform: translateX(3px);
}

@media (max-width: 768px) {
  .if-home-entry {
    grid-template-columns: minmax(0, 1fr);
    padding: 26px 22px;
    gap: 20px;
  }
  .if-home-entry-title { font-size: 21px; }
  .if-home-entry-desc { font-size: 14px; }
  .if-home-entry-btn { width: 100%; justify-content: center; }
}

/* ============================================
   技术发布页（technology.html）扩展样式
   ============================================ */

/* 页内锚点导航（吸顶） */
.t-subnav {
  position: sticky;
  top: var(--header-h);
  z-index: 40;
  background: var(--color-bg-card);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}
.t-subnav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 4px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.t-subnav-inner::-webkit-scrollbar { display: none; }
.t-subnav a {
  flex-shrink: 0;
  padding: 14px 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary);
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  scroll-margin-top: calc(var(--header-h) + 52px);
}
.t-subnav a:hover { color: var(--color-primary); border-color: var(--color-border-strong); }

/* 通用说明文字 */
.t-note {
  margin-top: 28px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  background: var(--color-bg-section);
  border-left: 3px solid var(--color-secondary);
  border-radius: 0 8px 8px 0;
  padding: 14px 18px;
}
.t-note--tight { margin-top: 12px; }
.t-note--center { text-align: center; border-left: none; border-radius: 8px; }

/* 双列参数表 */
.t-param-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}
.t-param-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 14px;
  padding-left: 12px;
  border-left: 3px solid var(--color-secondary);
}
.t-param-title--gap { margin-top: 44px; }

/* 通用技术表格 */
.t-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  font-size: 14px;
}
.t-table tbody tr { border-bottom: 1px solid var(--color-border); }
.t-table tbody tr:last-child { border-bottom: none; }
.t-table td { padding: 13px 18px; color: var(--color-text-secondary); line-height: 1.7; vertical-align: top; }
.t-table td:first-child { width: 200px; font-weight: 600; color: var(--color-primary); background: #F8FAFB; }
.t-table small { color: var(--color-text-muted); font-size: 12px; }
.t-table--wide th, .t-table--wide td { text-align: left; }
.t-table thead tr { background: var(--color-primary); }
.t-table thead th {
  padding: 13px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-on-dark);
  text-align: left;
}
.t-table--wide td:first-child { width: auto; }

/* 九大子系统 */
.t-sys-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.t-sys-card {
  background: var(--color-bg-section);
  border-radius: var(--radius-lg);
  padding: 26px 24px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.t-sys-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.t-sys-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-secondary);
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.t-sys-title { font-size: 17px; font-weight: 700; color: var(--color-primary); margin-bottom: 8px; }
.t-sys-desc { font-size: 13.5px; line-height: 1.75; color: var(--color-text-secondary); }
.t-sys-desc b { color: var(--color-primary); }

/* 选型规则卡 */
.t-rule-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.t-rule-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-secondary);
  border-radius: var(--radius-md);
  padding: 20px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--color-text-secondary);
}
.t-rule-model { font-size: 20px; font-weight: 800; color: var(--color-primary); margin-bottom: 8px; }

/* 工艺流程横条 */
.t-flowline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  margin-bottom: 32px;
}
.t-fl-node {
  background: var(--color-bg-section);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 7px 16px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-primary);
  white-space: nowrap;
}
.t-fl-node em {
  font-style: normal;
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-left: 6px;
}
.t-fl-node.is-opt { border-style: dashed; }
.t-fl-node.is-key { background: var(--color-primary); color: var(--color-text-on-dark); border-color: var(--color-primary); }
.t-fl-arrow { color: var(--color-text-muted); font-weight: 700; }

/* 预处理卡片 */
.t-pretreat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.t-pre-card {
  background: var(--color-bg-section);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.t-pre-title { font-size: 16px; font-weight: 700; color: var(--color-primary); margin-bottom: 8px; }
.t-pre-card p { font-size: 13.5px; line-height: 1.75; color: var(--color-text-secondary); }

/* 工艺路线三卡 */
.t-route-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.t-route-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 30px 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.t-route-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.t-route-card.is-hot { border-color: var(--color-secondary); box-shadow: var(--shadow-md); }
.t-route-name { font-size: 20px; font-weight: 800; color: var(--color-primary); }
.t-route-quality {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-secondary-light);
  border-radius: var(--radius-pill);
  padding: 8px 16px;
  align-self: flex-start;
}
.t-route-list { display: flex; flex-direction: column; gap: 8px; }
.t-route-list li {
  position: relative;
  padding-left: 20px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}
.t-route-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-secondary);
}
.t-route-app {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px dashed var(--color-border);
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* EDI 三步 */
.t-edi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 36px;
}
.t-edi-step {
  background: var(--color-bg-section);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.t-edi-num { font-size: 16px; font-weight: 800; color: var(--color-primary); margin-bottom: 8px; }
.t-edi-step p { font-size: 13.5px; line-height: 1.75; color: var(--color-text-secondary); }

/* 行业标准表横向滚动 */
.t-std-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.t-std-table { min-width: 860px; }
.t-std-table td:first-child { width: 120px; }
.t-std-table td:nth-child(2) { width: 240px; }

/* 维护要点 */
.t-maint-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.t-maint-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 26px 24px;
}
.t-maint-card:hover { box-shadow: var(--shadow-md); }
.t-maint-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
  padding-left: 12px;
  border-left: 3px solid var(--color-secondary);
}
.t-maint-card p { font-size: 13.5px; line-height: 1.8; color: var(--color-text-secondary); }
.t-maint-card b { color: var(--color-primary); }

/* 技术实力数字 */
.t-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.t-stat {
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  padding: 36px 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.t-stat b { font-size: 44px; font-weight: 800; color: var(--color-text-on-dark); line-height: 1; }
.t-stat span { font-size: 14px; color: var(--color-secondary-light); }

/* FAQ 手风琴（原生 details，键盘可用） */
.t-faq { display: flex; flex-direction: column; gap: 14px; }
.t-faq details {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.t-faq details[open] { border-color: var(--color-secondary); }
.t-faq summary {
  padding: 18px 56px 18px 22px;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--color-primary);
  cursor: pointer;
  position: relative;
  list-style: none;
}
.t-faq summary::-webkit-details-marker { display: none; }
.t-faq summary::after {
  content: '+';
  position: absolute;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 22px;
  font-weight: 400;
  color: var(--color-secondary);
  transition: transform 0.2s;
}
.t-faq details[open] summary::after { content: '−'; }
.t-faq summary:focus-visible { outline: 2px solid var(--color-secondary); outline-offset: -2px; }
.t-faq details p {
  padding: 0 22px 20px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--color-text-secondary);
}

/* 锚点定位偏移（吸顶导航不遮挡目标） */
#t-principle, #t-params, #t-system, #t-membrane, #t-pretreat,
#t-route, #t-edi, #t-standards, #t-maint, #t-faq {
  scroll-margin-top: calc(var(--header-h) + 52px);
}

/* 响应式 */
@media (max-width: 992px) {
  .t-param-grid { grid-template-columns: 1fr; gap: 24px; }
  .t-sys-grid { grid-template-columns: repeat(2, 1fr); }
  .t-rule-grid { grid-template-columns: repeat(2, 1fr); }
  .t-route-grid { grid-template-columns: 1fr; }
  .t-edi-grid { grid-template-columns: 1fr; }
  .t-maint-grid { grid-template-columns: repeat(2, 1fr); }
  .t-stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .t-subnav a { padding: 12px 12px; font-size: 13px; }
  .t-sys-grid, .t-pretreat-grid, .t-maint-grid, .t-rule-grid { grid-template-columns: 1fr; }
  .t-table td:first-child { width: 130px; }
  .t-flowline { padding: 16px; }
  .t-stat b { font-size: 34px; }
}

/* ========== 首页选型指引条 ========== */
.home-guide {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  background: linear-gradient(135deg, var(--color-primary-deep), var(--color-primary));
  color: #fff;
  border-radius: 14px;
  padding: 26px 32px;
  margin: 0 0 8px;
}
.home-guide-title { font-size: 19px; font-weight: 700; margin-bottom: 6px; }
.home-guide-steps { font-size: 14px; color: rgba(255,255,255,.85); }
.home-guide .btn-secondary { border-color: rgba(255,255,255,.5); color: #fff; flex-shrink: 0; }
.home-guide .btn-secondary:hover { background: rgba(255,255,255,.12); }
@media (max-width: 768px) {
  .home-guide { flex-direction: column; align-items: flex-start; padding: 22px 20px; }
}