/* =========================================
   ROSSUM 罗森骨折复位机器人 官方网站样式
   主色调: 医疗科技蓝 #0057A8 / 白色
   ========================================= */

/* =========================================
   ★ 中英文双语切换核心规则 ★
   机制说明：
   - 默认 body 为中文模式（显示 data-lang="zh"，隐藏 data-lang="en"）
   - 切换英文时，body 添加 .lang-en 类
   - lang-en 模式：显示 data-lang="en"，隐藏 data-lang="zh"
   - 所有 data-lang 元素默认 inline，不影响块级布局
   ========================================= */

/* 默认：中文可见，英文隐藏 */
[data-lang="en"] {
  display: none !important;
}
[data-lang="zh"] {
  display: revert !important;
}

/* 英文模式：英文可见，中文隐藏 */
body.lang-en [data-lang="zh"] {
  display: none !important;
}
body.lang-en [data-lang="en"] {
  display: revert !important;
}

/* ---- 特殊情况：块级容器中的 data-lang 元素 ---- */
/* 按钮、链接等行内元素，用 inline-flex 保持样式 */
body:not(.lang-en) a[data-lang="zh"],
body:not(.lang-en) button[data-lang="zh"] {
  display: inline-flex !important;
}
body.lang-en a[data-lang="en"],
body.lang-en button[data-lang="en"] {
  display: inline-flex !important;
}

/* h1/h2/h3/h4/h5/h6 标题元素强制 block */
body:not(.lang-en) h1[data-lang="zh"],
body:not(.lang-en) h2[data-lang="zh"],
body:not(.lang-en) h3[data-lang="zh"],
body:not(.lang-en) h4[data-lang="zh"],
body:not(.lang-en) h5[data-lang="zh"] {
  display: block !important;
}
body.lang-en h1[data-lang="en"],
body.lang-en h2[data-lang="en"],
body.lang-en h3[data-lang="en"],
body.lang-en h4[data-lang="en"],
body.lang-en h5[data-lang="en"] {
  display: block !important;
}

/* p 段落 */
body:not(.lang-en) p[data-lang="zh"] {
  display: block !important;
}
body.lang-en p[data-lang="en"] {
  display: block !important;
}

/* span 行内文本 */
body:not(.lang-en) span[data-lang="zh"] {
  display: inline !important;
}
body.lang-en span[data-lang="en"] {
  display: inline !important;
}

/* li 列表项 */
body:not(.lang-en) li[data-lang="zh"] {
  display: list-item !important;
}
body.lang-en li[data-lang="en"] {
  display: list-item !important;
}

/* div / section 块 */
body:not(.lang-en) div[data-lang="zh"] {
  display: block !important;
}
body.lang-en div[data-lang="en"] {
  display: block !important;
}

/* label 表单标签 */
body:not(.lang-en) label[data-lang="zh"] {
  display: block !important;
}
body.lang-en label[data-lang="en"] {
  display: block !important;
}

/* ---- 语言切换过渡动画 ---- */
[data-lang] {
  transition: opacity 0.25s ease;
}

/* ---- 英文模式全局字体切换 ---- */
body.lang-en {
  font-family: var(--font-en);
}
body.lang-en .section-title,
body.lang-en h1, body.lang-en h2, body.lang-en h3, body.lang-en h4 {
  letter-spacing: -0.01em;
}

/* ---- HTML lang 属性辅助（由JS同步） ---- */

:root {
  --primary: #0057A8;
  --primary-dark: #003D7A;
  --primary-light: #1A7DD4;
  --accent: #00B4D8;
  --accent-light: #E8F4FD;
  --text-primary: #1A1A2E;
  --text-secondary: #4A5568;
  --text-light: #718096;
  --bg-white: #FFFFFF;
  --bg-light: #F7FAFC;
  --bg-section: #EEF4FB;
  --border: #E2E8F0;
  --shadow-sm: 0 2px 8px rgba(0,87,168,0.08);
  --shadow-md: 0 8px 32px rgba(0,87,168,0.12);
  --shadow-lg: 0 20px 60px rgba(0,87,168,0.15);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s ease;
  --font-cn: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --font-en: 'Inter', 'Helvetica Neue', Arial, sans-serif;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-cn);
  color: var(--text-primary);
  background: var(--bg-white);
  line-height: 1.7;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ---- 通用布局 ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-sm { padding: 60px 0; }
.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.8;
}
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header .section-subtitle { margin: 12px auto 0; }
.tag-line {
  display: inline-block;
  background: var(--accent-light);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 16px;
  border-radius: 20px;
  margin-bottom: 16px;
}
.divider {
  width: 48px; height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  margin: 16px auto 0;
}
.divider-left { margin: 16px 0 0; }

/* ---- 按钮 ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 32px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 0 4px 16px rgba(0,87,168,0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,87,168,0.4);
  color: #fff;
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}
.btn-white {
  background: #fff;
  color: var(--primary);
  font-weight: 700;
}
.btn-white:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
}
.btn-sm { padding: 8px 20px; font-size: 0.85rem; }

/* ---- 导航 ---- */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
#navbar.scrolled {
  box-shadow: var(--shadow-md);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.nav-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

/* 导航栏 LOGO 图片 */
.nav-logo-img {
  height: 44px;        /* 固定高度，宽度自适应，防止变形 */
  width: auto;
  max-width: 200px;
  object-fit: contain;
  display: block;
  /* 保持清晰度 */
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

/* 兼容旧的 logo-icon / logo-text（保留但不显示，避免影响布局） */
.nav-logo .logo-icon,
.nav-logo .logo-text,
.nav-logo .logo-cn,
.nav-logo .logo-en {
  display: none;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  padding: 8px 14px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 8px;
  transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--primary);
  background: var(--accent-light);
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}
.lang-switcher {
  display: inline-flex;
  align-items: center;
}
.lang-toggle {
  padding: 6px 16px;
  font-size: 0.8rem;
  font-weight: 700;
  border: 1px solid var(--border);
  background: var(--bg-light);
  cursor: pointer;
  transition: all 0.25s ease;
  color: var(--primary);
  letter-spacing: 0.05em;
  border-radius: 20px;
  line-height: 1.4;
  white-space: nowrap;
}
.lang-toggle:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.nav-cta { display: none; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border: none;
  background: none;
}
.hamburger span {
  width: 24px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px; left: 0; right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  z-index: 999;
  padding: 16px 24px;
  flex-direction: column;
  gap: 4px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  padding: 12px 16px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 8px;
  transition: var(--transition);
}
.mobile-menu a:hover { background: var(--accent-light); color: var(--primary); }
.mobile-menu .lang-switcher { margin-top: 8px; align-self: flex-start; }

/* ---- 首页 Banner（基础规则，详细样式在 index.html 内联 style 中） ---- */
/* .hero 全宽沉浸式 Banner，背景图片由 img.hero-bg-img 提供 */
.hero-content { position: relative; z-index: 2; max-width: 580px; margin: 0 auto; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.22);
  color: #fff;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}
.hero-badge .dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.2); }
}
.hero h1 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 36px;
  letter-spacing: -0.02em;
}
.hero h1 .highlight {
  background: linear-gradient(90deg, var(--accent), #90E0EF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.82);
  margin-bottom: 40px;
  line-height: 1.85;
  text-shadow: 0 1px 4px rgba(0,0,0,0.4);
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; margin-bottom: 0; }

/* ---- 优势模块 ---- */
.advantages { background: var(--bg-white); }
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.adv-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.adv-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}
.adv-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-8px);
  border-color: var(--primary);
}
.adv-card:hover::before { opacity: 1; }
.adv-icon {
  width: 68px; height: 68px;
  margin: 0 auto 20px;
  background: var(--accent-light);
  border-radius: 18px;
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem;
  color: var(--primary);
  transition: var(--transition);
}
.adv-card:hover .adv-icon {
  background: var(--primary);
  color: #fff;
  transform: scale(1.1);
}
.adv-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 12px; color: var(--text-primary); }
.adv-card p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.7; }

/* ---- 产品展示 ---- */
.products-section { background: var(--bg-white); }
.product-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.product-showcase.reverse { direction: rtl; }
.product-showcase.reverse > * { direction: ltr; }
.product-img-wrap {
  background: linear-gradient(135deg, var(--bg-section), #D0E8FF);
  border-radius: var(--radius-lg);
  height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
/* 当包含真实图片时，图片占满 */
.product-img-wrap .product-real-img {
  position: absolute;
  inset: 0;
  height: 100%;
  border-radius: var(--radius-lg);
}
.product-img-wrap .product-real-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.product-mock {
  width: 80%;
  height: 80%;
  background: linear-gradient(135deg, rgba(0,87,168,0.1), rgba(0,180,216,0.1));
  border: 2px solid rgba(0,87,168,0.2);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  backdrop-filter: blur(10px);
}
.product-mock-icon { font-size: 4rem; }
.product-mock-label {
  font-size: 1rem; font-weight: 600; color: var(--primary); text-align: center;
}
.product-info { padding: 20px 0; }
.product-info h3 { font-size: 1.6rem; font-weight: 700; margin-bottom: 12px; }
.product-info .desc { font-size: 0.95rem; color: var(--text-secondary); margin-bottom: 24px; line-height: 1.8; }
.feature-list { margin-bottom: 28px; }
.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}
.feature-item:last-child { border: none; }
.check {
  width: 20px; height: 20px;
  background: var(--primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 0.65rem; font-weight: 700;
  flex-shrink: 0; margin-top: 2px;
}
.feature-item span { font-size: 0.9rem; color: var(--text-secondary); }

/* ---- 新闻模块 ---- */
.news-section { background: var(--bg-section); }
.news-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
}
.news-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.news-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.news-img {
  height: 200px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
}
.news-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.news-body { padding: 24px; }
.news-meta {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 12px;
}
.news-tag {
  font-size: 0.75rem; font-weight: 600;
  background: var(--accent-light);
  color: var(--primary);
  padding: 3px 10px;
  border-radius: 4px;
}
.news-date { font-size: 0.8rem; color: var(--text-light); }
.news-card h4 { font-size: 1rem; font-weight: 700; margin-bottom: 10px; line-height: 1.5; }
.news-card p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6; }
.news-link {
  display: inline-flex; align-items: center; gap: 4px;
  margin-top: 16px;
  font-size: 0.85rem; font-weight: 600; color: var(--primary);
}

/* ---- 关于我们 ---- */
.about-banner {
  background: linear-gradient(135deg, #001F4E, #0057A8);
  padding: 160px 0 80px;
  text-align: center;
}
.about-banner h1 { font-size: 2.8rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
.about-banner p { font-size: 1.1rem; color: rgba(255,255,255,0.8); max-width: 600px; margin: 0 auto; }
.about-overview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-overview-visual {
  display: flex;
  align-items: stretch;
  align-self: stretch;
  min-height: 400px;
}
.about-overview-img-wrap {
  flex: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
  min-height: 400px;
}
.about-overview-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
/* ===== 悬挂式大数字时间轴（自动轮播） ===== */
.milestone-track {
  position: relative;
  overflow: hidden;
  padding: 0 0 40px;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 4%, #000 96%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 4%, #000 96%, transparent);
}

/* 顶部水平连接线（固定不动） */
.milestone-line {
  position: absolute;
  top: 12px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary) 15%, var(--primary) 85%, transparent);
  opacity: 0.25;
  z-index: 0;
}

/* 横向轮播轨道 */
.milestone-scroll {
  display: flex;
  gap: 0;
  min-width: max-content;
  padding: 40px 0 20px;
  animation: milestoneAutoScroll 30s linear infinite;
}
.milestone-track:hover .milestone-scroll {
  animation-play-state: paused;
}
@media (prefers-reduced-motion: reduce) {
  .milestone-scroll { animation: none; }
}

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

/* 每个节点 */
.milestone-item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 230px;
  padding: 0 28px;
  cursor: default;
}

/* 圆点 - 卡在线条上 */
.milestone-dot {
  width: 12px;
  height: 12px;
  background: var(--primary);
  border: 3px solid #fff;
  border-radius: 50%;
  box-shadow: 0 0 0 6px rgba(0,87,168,0.1);
  position: relative;
  z-index: 2;
  flex-shrink: 0;
  margin-top: -27px;
  transition: all 0.3s;
}
.milestone-item:hover .milestone-dot {
  transform: scale(1.5);
  box-shadow: 0 0 0 10px rgba(0,87,168,0.16), 0 0 20px rgba(0,87,168,0.2);
}

/* 悬挂竖线 */
.milestone-dot::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  width: 1px;
  height: 55px;
  background: linear-gradient(to bottom, var(--primary), transparent);
  opacity: 0.25;
  transform: translateX(-50%);
}

/* 大数字年份 */
.milestone-year {
  font-size: 3.2rem;
  font-weight: 900;
  color: var(--primary);
  opacity: 0.1;
  line-height: 1;
  margin: 26px 0 10px;
  letter-spacing: 2px;
  transition: all 0.4s;
  user-select: none;
}
.milestone-item:hover .milestone-year {
  opacity: 0.35;
}

/* 内容卡片 */
.milestone-card {
  background: #fff;
  border: 1px solid rgba(0,87,168,0.08);
  border-radius: 12px;
  padding: 18px 16px;
  text-align: center;
  width: 100%;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  transition: all 0.3s;
}
.milestone-item:hover .milestone-card {
  box-shadow: 0 6px 24px rgba(0,87,168,0.1);
  border-color: rgba(0,87,168,0.18);
  transform: translateY(-2px);
}

.milestone-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}
.milestone-desc {
  font-size: 0.76rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* 响应式：移动端纵向时间轴 */
@media (max-width: 768px) {
  .milestone-track {
    overflow: visible;
    -webkit-mask-image: none;
    mask-image: none;
  }
  .milestone-scroll {
    flex-direction: column;
    gap: 0;
    padding: 20px 24px;
    min-width: auto;
    animation: none;
    transform: none;
  }
  .milestone-item[aria-hidden="true"] {
    display: none;
  }
  .milestone-line {
    display: none;
  }
  .milestone-item {
    flex-direction: row;
    align-items: flex-start;
    min-width: auto;
    padding: 0 0 32px 36px;
    border-left: 2px solid rgba(0,87,168,0.15);
    scroll-snap-align: none;
  }
  .milestone-item:last-child {
    border-left-color: transparent;
    padding-bottom: 0;
  }
  .milestone-dot {
    position: absolute;
    left: -9px;
    top: 0;
    margin-top: 0;
    width: 14px;
    height: 14px;
  }
  .milestone-dot::after {
    display: none;
  }
  .milestone-year {
    font-size: 1.6rem;
    margin: 0 14px 0 0;
    opacity: 0.2;
    flex-shrink: 0;
    line-height: 1.1;
  }
  .milestone-card {
    text-align: left;
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 0;
  }
  .milestone-item:hover .milestone-card {
    box-shadow: none;
    transform: none;
  }
}
/* ---- 企业文化：深色全宽背景版 ---- */
.culture-section-dark {
  position: relative;
  background: linear-gradient(180deg, #002B55 0%, #003D7A 40%, #0057A8 100%);
  color: #fff;
  overflow: hidden;
  padding: 80px 0 80px;
}
.culture-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.culture-mountains {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 60%;
}
.culture-container {
  position: relative;
  z-index: 2;
}
.culture-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 48px;
}
.culture-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.72);
  margin-bottom: 10px;
}
.culture-title {
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.culture-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.85);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color 0.3s ease, transform 0.3s ease;
  margin-bottom: 4px;
}
.culture-more:hover {
  color: #fff;
  transform: translateX(3px);
}
.culture-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.culture-card {
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.culture-card-dark {
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,0.16);
}
.culture-card-dark:hover {
  background: rgba(255,255,255,0.13);
  border-color: rgba(255,255,255,0.28);
  transform: translateY(-6px);
  box-shadow: 0 24px 56px rgba(0,0,0,0.22);
}
.culture-card-light {
  background: rgba(255,255,255,0.94);
  border: 1px solid rgba(255,255,255,0.4);
}
.culture-card-light:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 56px rgba(0,0,0,0.22);
}
.culture-card-inner {
  padding: 38px 30px;
  min-height: 260px;
  display: flex;
  flex-direction: column;
}
.culture-card h3 {
  font-family: 'Ma Shan Zheng', 'STKaiti', 'KaiTi', 'KaiTi_GB2312', cursive;
  font-size: 2.1rem;
  font-weight: 400;
  margin-bottom: 26px;
  line-height: 1.25;
  letter-spacing: 0.02em;
}
.culture-card-dark h3 { color: #fff; }
.culture-card-light h3 { color: var(--primary); }
.culture-card p {
  font-size: 0.95rem;
  line-height: 1.75;
  margin-top: auto;
}
.culture-card-dark p { color: rgba(255,255,255,0.86); }
.culture-card-light p { color: var(--text-secondary); }

/* 旧企业文化样式保留兼容 */
.culture-card-old {
  background: var(--bg-section);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
}
.culture-card-old:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.culture-card-old .icon { font-size: 2.5rem; margin-bottom: 16px; }
.culture-card-old h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; color: var(--primary); }
.culture-card-old p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6; }
.honor-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.honor-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
}
.honor-card:hover { box-shadow: var(--shadow-md); border-color: var(--primary); }
.honor-card .trophy { width: 48px; height: 48px; margin: 0 auto 12px; }
.honor-card h4 { font-size: 0.9rem; font-weight: 700; color: var(--primary); margin-bottom: 6px; }
.honor-card p { font-size: 0.8rem; color: var(--text-light); }

/* ---- 奖状奖杯轮播 ---- */
.awards-carousel-wrapper {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 48px;
}
.awards-carousel {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  padding: 12px 4px 32px;
  scrollbar-width: none;
}
.awards-carousel::-webkit-scrollbar { display: none; }
.award-slide {
  flex: 0 0 280px;
  scroll-snap-align: center;
  text-align: center;
}
.award-slide-landscape {
  flex: 0 0 440px;
}
.award-img-wrap {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.award-img-wrap:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
  transform: translateY(-4px);
}
.award-img-wrap img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 4px;
}
.award-img-landscape {
  height: 280px;
  padding: 12px;
}
.award-caption {
  margin-top: 12px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}
.awards-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--primary);
  transition: var(--transition);
  z-index: 2;
}
.awards-nav:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.awards-prev { left: 0; }
.awards-next { right: 0; }

/* 荣誉标签 */
.honor-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.honor-tag {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 500;
  transition: var(--transition);
}
.honor-tag:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

@media (max-width: 768px) {
  .awards-carousel-wrapper { padding: 0 36px; }
  .award-slide { flex: 0 0 220px; }
  .award-img-wrap { height: 300px; }
}
@media (max-width: 480px) {
  .award-slide { flex: 0 0 180px; }
  .award-img-wrap { height: 260px; padding: 12px; }
  .awards-nav { width: 32px; height: 32px; }
}

/* ---- 产品方案页 ---- */
.product-page-banner {
  background: linear-gradient(135deg, #001F4E, #003D7A, #0057A8);
  padding: 160px 0 80px;
  text-align: center;
}
.product-page-banner h1 { font-size: 2.8rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
.product-page-banner p { font-size: 1.1rem; color: rgba(255,255,255,0.8); }
.tab-nav {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
}
.tab-btn {
  padding: 12px 28px;
  border: 2px solid var(--border);
  background: #fff;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-secondary);
}
.tab-btn.active, .tab-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.tab-content { display: none; }
.tab-content.active { display: block; }
.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.tech-card {
  background: var(--bg-section);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: var(--transition);
}
.tech-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.tech-card .icon { font-size: 2.5rem; margin-bottom: 16px; }
.tech-card h3 { font-size: 1rem; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.tech-card p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.7; }
.clinical-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.clinical-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: var(--transition);
}
.clinical-card:hover { box-shadow: var(--shadow-md); border-color: var(--primary); transform: translateY(-4px); }
.clinical-card .icon { font-size: 2rem; margin-bottom: 12px; }
.clinical-card h4 { font-size: 0.9rem; font-weight: 700; color: var(--primary); }
.download-section {
  background: var(--bg-section);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
}
.download-grid {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 24px;
}
.download-btn {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 28px;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}
.download-btn:hover { box-shadow: var(--shadow-md); border-color: var(--primary); transform: translateY(-2px); }
.download-btn .icon { font-size: 2rem; }
.download-btn span { font-size: 0.85rem; font-weight: 600; color: var(--primary); }

/* ---- 赋能中心 ---- */
.enablement-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.paper-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}
.paper-card:hover { box-shadow: var(--shadow-md); }
.paper-card .journal {
  font-size: 0.75rem; font-weight: 600; color: var(--primary);
  background: var(--accent-light); padding: 3px 10px; border-radius: 4px;
  display: inline-block; margin-bottom: 12px;
}
.paper-card h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 8px; line-height: 1.5; }
.paper-card .authors { font-size: 0.8rem; color: var(--text-light); margin-bottom: 12px; }
.paper-card .actions { display: flex; gap: 8px; }
/* ---- 案例中心新版 ---- */
.case-product-tabs {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.case-product-tab {
  display: flex !important;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border: 2px solid var(--border);
  border-radius: 50px;
  background: #fff;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}
.case-product-tab:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.case-product-tab.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(0,61,122,0.25);
}
.case-product-tab .tab-icon { font-size: 1.2rem; }

/* 骨折类型筛选条 */
.case-filter-bar {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.case-filter-btn {
  padding: 6px 18px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.25s ease;
}
.case-filter-btn:hover { border-color: var(--primary); color: var(--primary); }
.case-filter-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* 案例卡片网格 */
.case-real-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.case-real-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.35s ease;
  border: 1px solid var(--border);
}
.case-real-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

/* 图片区域 */
.case-card-img-wrap {
  position: relative;
  height: 260px;
  background: #0a1628;
  overflow: hidden;
}
.case-card-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.case-card-img.active { opacity: 1; }

/* 图片切换标签 */
.case-img-tabs {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  padding: 24px 12px 10px;
  gap: 6px;
  justify-content: center;
}
.case-img-tab {
  padding: 5px 16px;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 14px;
  background: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.7);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
  backdrop-filter: blur(4px);
}
.case-img-tab:hover { background: rgba(255,255,255,0.2); color: #fff; }
.case-img-tab.active {
  background: rgba(255,255,255,0.95);
  color: var(--primary);
  border-color: transparent;
}

/* 全球首例标识 */
.global-first-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 4px 12px;
  background: linear-gradient(135deg, #D4A017, #FFD700);
  color: #1a1a1a;
  font-size: 0.72rem;
  font-weight: 700;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(212,160,23,0.35);
  z-index: 2;
  letter-spacing: 0.5px;
}

/* 案例信息区 */
.case-real-body { padding: 22px; }
.case-fracture-type {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  background: rgba(0,180,216,0.1);
  padding: 2px 10px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 10px;
}
.case-real-body h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 8px; line-height: 1.5; color: var(--text-primary); }
.case-patient {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-bottom: 8px;
  line-height: 1.5;
}
.case-summary {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 保留旧版样式兼容 */
.case-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.case-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.case-img {
  height: 180px;
  background: linear-gradient(135deg, #E8F4FD, #B3D9F7);
  display: flex; align-items: center; justify-content: center; font-size: 3rem;
}
.case-body { padding: 20px; }
.case-body .type {
  font-size: 0.75rem; font-weight: 600; color: var(--accent);
  background: rgba(0,180,216,0.1); padding: 2px 8px; border-radius: 4px;
  display: inline-block; margin-bottom: 10px;
}
.case-body h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 8px; line-height: 1.5; }
.case-body p { font-size: 0.82rem; color: var(--text-secondary); }

@media (max-width: 768px) {
  .case-real-grid { grid-template-columns: 1fr; }
  .case-card-img-wrap { height: 220px; }
  .case-product-tab { font-size: 0.8rem; padding: 10px 18px; }
}
.training-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.training-card {
  background: var(--bg-section);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  display: flex; gap: 24px; align-items: flex-start;
  transition: var(--transition);
}
.training-card:hover { box-shadow: var(--shadow-md); }
.training-icon {
  width: 60px; height: 60px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; color: #fff;
}
.training-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; }
.training-card p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.7; }

/* ---- 新闻中心页 ---- */
.news-filter {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.filter-btn {
  padding: 8px 20px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-secondary);
}
.filter-btn.active, .filter-btn:hover {
  background: var(--primary); color: #fff; border-color: var(--primary);
}
.news-list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

/* ---- 人在罗森 ---- */
.life-banner {
  background: linear-gradient(135deg, #001F4E, #0057A8);
  padding: 160px 0 80px;
  text-align: center;
}
.life-banner h1 { font-size: 2.8rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
.life-banner p { font-size: 1.1rem; color: rgba(255,255,255,0.8); }
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.benefit-card {
  background: var(--bg-section);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
}
.benefit-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.benefit-card .icon { font-size: 2rem; margin-bottom: 12px; }
.benefit-card h4 { font-size: 0.9rem; font-weight: 700; color: var(--primary); margin-bottom: 6px; }
.benefit-card p { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.6; }

/* 员工关怀照片墙 */
.benefit-gallery { display: flex; flex-direction: column; gap: 48px; }
.benefit-category { display: flex; flex-direction: column; gap: 20px; }
.benefit-category-header {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 4px;
}
.benefit-category-header .cat-line {
  width: 4px; height: 24px; background: var(--primary); border-radius: 2px;
}
.benefit-category-header h3 {
  font-size: 1.1rem; font-weight: 700; color: var(--primary); margin: 0;
}
.benefit-category-header .cat-count {
  font-size: 0.8rem; color: var(--text-muted); font-weight: 500;
  background: var(--bg-light); padding: 2px 10px; border-radius: 12px;
}
/* ===== 企业图集 — 拼贴风格 ===== */
.gallery-collage {
  position: relative;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  min-height: 580px;
}

.collage-item {
  position: absolute;
  width: 190px;
  background: #fff;
  padding: 7px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  cursor: pointer;
}

.collage-item img {
  display: block;
  width: 100%;
  height: auto;
}

/* 错落位置 + 旋转角度 */
.collage-item:nth-child(1)  { top: 5%;   left: 2%;   transform: rotate(-7deg); }
.collage-item:nth-child(2)  { top: 2%;   left: 20%;  transform: rotate(5deg);  }
.collage-item:nth-child(3)  { top: 8%;   left: 37%;  transform: rotate(-4deg); }
.collage-item:nth-child(4)  { top: 1%;   left: 52%;  transform: rotate(8deg);  }
.collage-item:nth-child(5)  { top: 6%;   left: 68%;  transform: rotate(-6deg); }
.collage-item:nth-child(6)  { top: 28%;  left: 6%;   transform: rotate(4deg);  }
.collage-item:nth-child(7)  { top: 30%;  left: 23%;  transform: rotate(-5deg); }
.collage-item:nth-child(8)  { top: 24%;  left: 40%;  transform: rotate(7deg);  }
.collage-item:nth-child(9)  { top: 32%;  left: 55%;  transform: rotate(-3deg); }
.collage-item:nth-child(10) { top: 27%;  left: 72%;  transform: rotate(6deg);  }
.collage-item:nth-child(11) { top: 50%;  left: 3%;   transform: rotate(-8deg); }
.collage-item:nth-child(12) { top: 52%;  left: 20%;  transform: rotate(4deg);  }
.collage-item:nth-child(13) { top: 48%;  left: 37%;  transform: rotate(-6deg); }
.collage-item:nth-child(14) { top: 54%;  left: 54%;  transform: rotate(5deg);  }

.collage-item:hover {
  transform: rotate(0deg) scale(1.15) !important;
  z-index: 100;
  box-shadow: 0 16px 40px rgba(0,0,0,0.25);
}

@media (max-width: 768px) {
  .gallery-collage {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    min-height: auto;
    padding: 0 10px;
  }
  .collage-item {
    position: relative;
    width: 100%;
    top: auto !important;
    left: auto !important;
    transform: none !important;
    padding: 6px;
  }
  .collage-item:hover {
    transform: scale(1.05) !important;
  }
}
.job-list { display: flex; flex-direction: column; gap: 16px; }
.job-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
  cursor: pointer;
}
.job-card:hover { box-shadow: var(--shadow-md); border-color: var(--primary); }
.job-info h4 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.job-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.job-tag {
  font-size: 0.75rem; font-weight: 500; color: var(--text-secondary);
  background: var(--bg-section); padding: 3px 10px; border-radius: 4px;
}
.job-tag.highlight { background: var(--accent-light); color: var(--primary); font-weight: 600; }
.job-desc { font-size: 0.85rem; color: var(--text-secondary); margin-top: 8px; max-width: 600px; }

/* ---- 联系我们 ---- */
.contact-banner {
  background: linear-gradient(135deg, #001F4E, #0057A8);
  padding: 160px 0 80px;
  text-align: center;
}
.contact-banner h1 { font-size: 2.8rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}
.contact-info-cards { display: flex; flex-direction: column; gap: 16px; }
.contact-info-card {
  background: var(--bg-section);
  border-radius: var(--radius);
  padding: 24px;
  display: flex; gap: 16px; align-items: flex-start;
}
.contact-icon {
  width: 44px; height: 44px; flex-shrink: 0;
  background: var(--primary);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; color: #fff;
}
.contact-info-card h4 { font-size: 0.85rem; font-weight: 700; color: var(--text-light); margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.05em; }
.contact-info-card p { font-size: 0.95rem; color: var(--text-primary); font-weight: 500; }
.map-placeholder {
  height: 300px;
  background: linear-gradient(135deg, #E8F4FD, #B3D9F7);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 12px;
  margin-top: 16px;
  font-size: 3rem;
  color: var(--primary);
}
.map-placeholder p { font-size: 0.9rem; color: var(--text-secondary); }
.form-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}
.form-card h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 24px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block; font-size: 0.85rem; font-weight: 600;
  color: var(--text-secondary); margin-bottom: 6px;
}
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 16px;
  border: 1px solid var(--border); border-radius: 8px;
  font-size: 0.9rem; color: var(--text-primary); font-family: inherit;
  background: var(--bg-light);
  transition: var(--transition);
  outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--primary); background: #fff;
  box-shadow: 0 0 0 3px rgba(0,87,168,0.1);
}
.form-group textarea { height: 120px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-success {
  display: none;
  text-align: center;
  padding: 40px;
  color: var(--primary);
}
.form-success .icon { font-size: 3rem; margin-bottom: 16px; }
.form-success h4 { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; }

/* ---- 弹窗 ---- */
.modal-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.modal-overlay.open { display: flex; }
.modal {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  max-width: 560px; width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
}
.modal-close {
  position: absolute; top: 16px; right: 16px;
  width: 36px; height: 36px;
  border: none; background: var(--bg-section);
  border-radius: 8px; cursor: pointer; font-size: 1.2rem;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.modal-close:hover { background: var(--primary); color: #fff; }

/* ---- 页脚 ---- */
footer {
  background: #001F4E;
  color: rgba(255,255,255,0.8);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand .logo { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
/* 页脚 LOGO 图片样式 */
.footer-logo-img {
  height: 40px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  display: block;
  margin-bottom: 16px;
  /* 深色页脚背景上白底LOGO需要滤镜增强可视性 */
  filter: brightness(0) invert(1);  /* 全白版，在深蓝背景上清晰显示 */
}

/* 保留旧 logo-icon 隐藏（兼容） */
.footer-brand .logo-icon { display: none; }
.footer-brand .logo-text { display: none; }
.footer-brand p { font-size: 0.85rem; line-height: 1.8; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.social-btn {
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.1);
  border-radius: 8px; display: flex; align-items: center; justify-content: center;
  font-size: 1rem; transition: var(--transition); text-decoration: none; color: rgba(255,255,255,0.8);
}
.social-btn:hover { background: var(--primary-light); color: #fff; }
.footer-col h4 { font-size: 0.9rem; font-weight: 700; color: #fff; margin-bottom: 16px; letter-spacing: 0.05em; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: 0.85rem; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--accent); }
.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
}
.footer-bottom a { transition: var(--transition); }
.footer-bottom a:hover { color: var(--accent); }

/* ---- 返回顶部 ---- */
#backToTop {
  position: fixed; bottom: 32px; right: 32px;
  width: 44px; height: 44px;
  background: var(--primary);
  color: #fff; border: none; border-radius: 10px;
  cursor: pointer; font-size: 1.2rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  display: none;
  align-items: center; justify-content: center;
  z-index: 999;
}
#backToTop.show { display: flex; }
#backToTop:hover { background: var(--primary-dark); transform: translateY(-2px); }

/* ---- 通知 ---- */
.toast {
  position: fixed; bottom: 100px; right: 32px;
  background: var(--primary);
  color: #fff; padding: 12px 24px;
  border-radius: 8px; font-size: 0.9rem; font-weight: 600;
  box-shadow: var(--shadow-md);
  z-index: 9999;
  opacity: 0; transform: translateY(20px);
  transition: var(--transition);
  pointer-events: none;
}
.toast.show { opacity: 1; transform: translateY(0); }

/* ---- 页面标题横幅 ---- */
.page-banner {
  background: linear-gradient(135deg, #001F4E, #0057A8);
  padding: 160px 0 80px;
  text-align: center;
}
.page-banner h1 { font-size: 2.8rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
.page-banner p { font-size: 1.1rem; color: rgba(255,255,255,0.8); max-width: 640px; margin: 0 auto; }

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  /* hero-grid 响应式由 index.html 内联 style 控制 */
  .product-showcase { grid-template-columns: 1fr; gap: 24px; }
  .product-showcase.reverse { direction: ltr; }
  .about-overview { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav-cta { display: none; }
  /* hero 移动端样式由 index.html 内联 style 控制 */
  .section { padding: 60px 0; }
  .section-title { font-size: 1.6rem; }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: 1fr; }
  .news-list-grid { grid-template-columns: 1fr; }
  .culture-grid { grid-template-columns: 1fr; }
  .culture-header { flex-direction: column; align-items: flex-start; gap: 16px; }
  .culture-title { font-size: 1.65rem; }
  .culture-card-inner { padding: 30px 24px; min-height: auto; }
  .culture-card h3 { font-size: 1.8rem; }
  .culture-section-dark { padding: 60px 0 70px; }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: 1fr; }
  .clinical-grid { grid-template-columns: repeat(2, 1fr); }
  .benefits-grid { grid-template-columns: repeat(2, 1fr); }
  .training-grid { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: 1fr; }
  .enablement-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .form-row { grid-template-columns: 1fr; }
  .hero-actions { gap: 12px; }
  .hero-actions .btn { flex: 1; justify-content: center; }
}

@media (max-width: 480px) {
  .adv-grid { grid-template-columns: 1fr; }
  .honor-grid { grid-template-columns: 1fr; }
  .clinical-grid { grid-template-columns: 1fr; }
  .benefits-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.8rem; }
  .page-banner h1 { font-size: 2rem; }
  .about-banner h1, .life-banner h1, .contact-banner h1 { font-size: 2rem; }
}

/* ---- 动画 ---- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }

/* ---- 语言切换补充 ---- */
/* 旧规则已迁移至文件顶部，由 [data-lang] + !important 统一控制 */
/* 以下为特殊组件覆盖 */

/* 语言切换时主内容区微淡入效果 */
.lang-transition {
  animation: langFadeIn 0.3s ease forwards;
}
@keyframes langFadeIn {
  from { opacity: 0.6; transform: translateY(4px); }
  to   { opacity: 1;   transform: translateY(0); }
}

/* 页脚双语链接并排 → 切换时隐藏另一个 */
.footer-col ul li { display: flex; align-items: center; gap: 0; }
.footer-col ul li a[data-lang] { display: inline; }

/* 确保 section-header 中 .tag-line span 正确切换 */
.section-header .tag-line { display: block; width: fit-content; }
.section-header .tag-line[data-lang] { display: none; }
body:not(.lang-en) .section-header .tag-line[data-lang="zh"] { display: inline-block; }
body.lang-en .section-header .tag-line[data-lang="en"] { display: inline-block; }

/* =========================================
   产品轮播组件
   ========================================= */
.product-carousel {
  position: relative;
  overflow: hidden;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 32px rgba(0,0,0,0.06);
}

.carousel-wrapper {
  position: relative;
}

.carousel-slide {
  display: none;
  animation: carouselFade 0.4s ease;
}

.carousel-slide.active {
  display: block;
}

@keyframes carouselFade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.carousel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 520px;
  align-items: center;
}

.carousel-image {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #f0f4f8 0%, #e8edf2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 520px;
  padding: 40px;
}

.carousel-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  max-height: 500px;
}

.carousel-info {
  padding: 48px 56px 48px 48px;
}

.carousel-badge {
  display: inline-block;
  background: rgba(0,87,168,0.08);
  color: var(--primary);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.carousel-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.reg-mark {
  font-size: 0.5em;
  vertical-align: super;
  font-weight: 400;
  color: inherit;
}

.carousel-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 28px;
  max-width: 420px;
}

.carousel-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 32px;
}

.cf-item {
  background: var(--bg-section);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}

.cf-value {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.cf-label {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.carousel-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* 产品特点卡片 */
.product-detail-features {
  margin-bottom: 32px;
}
.pdf-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 18px;
  padding-left: 12px;
  border-left: 3px solid var(--primary);
}
.pdf-list-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.pdf-list-cards.pdf-cols-4 {
  grid-template-columns: repeat(2, 1fr);
}
.pdf-card {
  background: var(--bg-white);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.06);
  box-shadow: 0 2px 10px rgba(0,87,168,0.08);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.pdf-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,87,168,0.15);
}
.pdf-card-img {
  width: 100%;
  aspect-ratio: 16 / 11;
  overflow: hidden;
  background: linear-gradient(135deg, #CBDEF0 0%, #B2CFE8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.pdf-card-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.pdf-card-placeholder {
  width: 100%;
  aspect-ratio: 16 / 11;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.9);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}
/* 横向图标卡片（擎天等图标配图场景） */
.pdf-card-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px;
}
.pdf-card-row .pdf-card-img {
  flex: 0 0 56px;
  width: 56px;
  aspect-ratio: unset;
  height: 56px;
  border-radius: 10px;
  padding: 10px;
  background: linear-gradient(135deg, #CBDEF0, #B2CFE8);
}
.pdf-card-row .pdf-card-body {
  padding: 0;
  flex: 1;
  min-width: 0;
}
.pdf-card-row .pdf-card-body h5 {
  font-size: 0.92rem;
  margin-bottom: 6px;
}
.pdf-card-row .pdf-card-body p {
  font-size: 0.8rem;
  line-height: 1.55;
}
@media (max-width: 768px) {
  .pdf-card-row {
    gap: 14px;
    padding: 14px;
  }
  .pdf-card-row .pdf-card-img {
    flex: 0 0 48px;
    width: 48px;
    height: 48px;
    padding: 8px;
  }
}
@media (max-width: 480px) {
  .pdf-card-row {
    gap: 12px;
    padding: 12px;
  }
  .pdf-card-row .pdf-card-img {
    flex: 0 0 44px;
    width: 44px;
    height: 44px;
    padding: 7px;
  }
}
.pdf-card-body {
  padding: 16px 18px 18px;
}
.pdf-card-num {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--primary);
  background: rgba(0,87,168,0.07);
  padding: 2px 10px;
  border-radius: 4px;
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}
.pdf-card-body h5 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.35;
}
.pdf-card-body p {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* 旧样式保留兼容（已废弃，逐步移除） */
.pdf-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.pdf-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.pdf-num {
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  font-size: 0.82rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}
.pdf-content h5 {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.pdf-content p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 响应式：产品特点卡片 */
@media (max-width: 768px) {
  .pdf-list-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .pdf-list-cards.pdf-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .pdf-card-img {
    aspect-ratio: 16 / 10;
    padding: 12px;
  }
  .pdf-card-placeholder {
    aspect-ratio: 16 / 10;
  }
  .pdf-card-body {
    padding: 14px 14px 16px;
  }
  .pdf-card-body h5 {
    font-size: 0.84rem;
  }
  .pdf-card-body p {
    font-size: 0.75rem;
  }
}
@media (max-width: 480px) {
  .pdf-list-cards {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .pdf-list-cards.pdf-cols-4 {
    grid-template-columns: 1fr;
  }
  .pdf-card-img {
    aspect-ratio: 16 / 9;
  }
  .pdf-card-placeholder {
    aspect-ratio: 16 / 9;
  }
  .pdf-card-body {
    padding: 14px 16px 16px;
  }
}

/* 轮播箭头 */
.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.92);
  border: 1px solid rgba(0,0,0,0.08);
  font-size: 1.5rem;
  color: var(--primary);
  cursor: pointer;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  line-height: 1;
}

.carousel-arrow:hover {
  background: #fff;
  box-shadow: 0 4px 18px rgba(0,0,0,0.15);
  color: var(--primary-dark);
}

.carousel-prev { left: 16px; }
.carousel-next { right: 16px; }

/* 指示点 */
.carousel-dots {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 10;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,0.5);
  cursor: pointer;
  transition: all 0.3s;
  padding: 0;
}

.carousel-dot.active {
  background: var(--primary);
  transform: scale(1.3);
}

.carousel-dot:hover {
  background: rgba(255,255,255,0.8);
}

/* 产品标签行 */
.prod-tag-item.active {
  background: var(--primary) !important;
  color: #fff !important;
  border-color: var(--primary) !important;
}

/* 轮播响应式 */
@media (max-width: 768px) {
  .carousel-grid {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .carousel-image {
    min-height: 300px;
    padding: 20px;
  }

  .carousel-image img {
    max-height: 280px;
  }

  .carousel-info {
    padding: 28px 24px;
  }

  .carousel-title {
    font-size: 1.6rem;
  }

  .carousel-arrow {
    width: 36px;
    height: 36px;
    font-size: 1.2rem;
  }

  .carousel-prev { left: 8px; }
  .carousel-next { right: 8px; }

  .carousel-dots { bottom: 10px; }
}