/* ===================================
   智洁超声科技官网 - 样式文件
   =================================== */

/* --- 基础重置 --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #0066FF;
  --primary-dark: #0052CC;
  --primary-light: #E8F0FF;
  --accent: #00C8FF;
  --text: #1c1c1c;
  --text-secondary: #191919;
  --text-muted: #888899;
  --bg: #fafafa;
  --bg-gray: #F7F8FC;
  --bg-dark: #0D1B3E;
  --border: #E2E8F0;
  --shadow: 0 4px 24px rgba(0,102,255,0.08);
  --shadow-hover: 0 12px 40px rgba(0,102,255,0.18);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; }
body { font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif; color: var(--text); background: var(--bg); line-height: 1.6; overflow-x: hidden; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; }
input, textarea, select { font-family: inherit; }

/* --- 容器 --- */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;

}

/* --- 通用段落 --- */
.section { padding: 80px 0; }
.section-header { text-align: center; margin-bottom: 56px; }
.section-tag { display: inline-block; background: var(--primary-light); color: var(--primary); font-size: 13px; font-weight: 600; padding: 4px 14px; border-radius: 20px; margin-bottom: 12px; letter-spacing: 0.5px; }
.section-title {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 700;
  color: #012201;
  line-height: 1.3;
  margin-bottom: 16px; }
.section-desc {
  font-size: 16px;
  color: #012201;
  max-width: 600px; margin: 0 auto; }
.section-action { text-align: center; margin-top: 48px; }

/* --- 按钮 --- */
.btn-primary { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); color: white; border: none; border-radius: 8px; padding: 12px 28px; font-size: 15px; font-weight: 600; cursor: pointer; transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(0,102,255,0.35); }
.btn-outline {
  background: transparent;
  color: #00AA44;
  border: 2px solid #00AA44;
  border-radius: 8px; padding: 10px 26px; font-size: 15px; font-weight: 600; cursor: pointer; transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; }
.btn-outline:hover { background: var(--primary-light); }
.btn-lg { padding: 16px 36px; font-size: 16px; border-radius: 10px; }
.btn-sm { padding: 8px 18px; font-size: 13px; }
.btn-full { width: 100%; justify-content: center; }
.btn-white { background: white; color: var(--primary); border: none; border-radius: 10px; padding: 16px 36px; font-size: 16px; font-weight: 700; cursor: pointer; transition: var(--transition); }
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(0,0,0,0.15); }
.btn-outline-white { background: transparent; color: white; border: 2px solid rgba(255,255,255,0.6); border-radius: 10px; padding: 14px 34px; font-size: 16px; font-weight: 600; cursor: pointer; transition: var(--transition); }
.btn-outline-white:hover { border-color: white; background: rgba(255,255,255,0.1); }

/* ===================================
   导航栏
   =================================== */
.navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(255,255,255,0.95); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(255,255,255,0.2); transition: var(--transition); }
.navbar.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.08); }
.nav-inner { display: flex; align-items: center; height: 70px; gap: 40px; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon { font-size: 28px; filter: drop-shadow(0 2px 8px rgba(0,102,255,0.4)); }
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-main { font-size: 26px; font-weight: 800; color: var(--primary); letter-spacing: 1px; }
.logo-sub { font-size: 10px; color: var(--text-muted); letter-spacing: 2px; }
.nav-links { display: flex; align-items: center; gap: 4px; flex: 1; }
.nav-link { padding: 8px 16px; font-size: 15px; color: var(--text-secondary); border-radius: 8px; transition: var(--transition); font-weight: 500; cursor: pointer; }
.nav-link:hover, .nav-link.active { color: var(--primary); background: var(--primary-light); }
.nav-cta { margin-left: auto; }
.menu-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.menu-toggle span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); }

/* ===================================
   首页 - Hero
   =================================== */
/* 固定 hero 高度：确保轮播图 height:100% 链路生效；1920×800 比例约为 42vw，限制在合理范围 */
.hero { position: relative; height: 100vh; min-height: 560px; max-height: 900px; display: flex; align-items: center; background: linear-gradient(135deg, #0D1B3E 0%, #0D2D6B 50%, #0D1B3E 100%); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; overflow: hidden; }
.hero-particles { position: absolute; inset: 0; background-image: radial-gradient(circle at 20% 50%, rgba(0,200,255,0.06) 0%, transparent 50%), radial-gradient(circle at 80% 20%, rgba(0,102,255,0.1) 0%, transparent 40%), radial-gradient(circle at 60% 80%, rgba(0,200,255,0.05) 0%, transparent 40%); }
.hero-wave { position: absolute; bottom: 0; left: 0; right: 0; height: 100px; background: var(--bg); clip-path: ellipse(55% 60% at 50% 100%); }

/* 动态粒子效果 */
.hero-bg::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,102,255,0.15) 0%, transparent 70%);
  top: -200px; right: -100px;
  border-radius: 50%;
  animation: float 8s ease-in-out infinite;
}
.hero-bg::after {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(0,200,255,0.1) 0%, transparent 70%);
  bottom: 100px; left: -100px;
  border-radius: 50%;
  animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translateY(0px) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.hero-content { position: relative; z-index: 2; text-align: center; max-width: 800px; margin: 0 auto; padding: 80px 20px 40px; display: flex;
  flex-direction: column; /* 设置子元素垂直排列 */
  min-height: 100vh;      /* 让父容器至少占满整个视口高度 */
  position: relative;     /* 建立定位上下文，是个好习惯 */}
.hero-badge { display: inline-block; background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); color: rgba(255,255,255,0.9); padding: 6px 18px; border-radius: 20px; font-size: 13px; margin-bottom: 24px; backdrop-filter: blur(10px); }
.hero-title { font-size: clamp(36px, 5vw, 64px); font-weight: 800; color: white; line-height: 1.2; margin-bottom: 20px; }
.gradient-text { background: linear-gradient(90deg, #00C8FF, #0066FF); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-desc { font-size: clamp(15px, 1.5vw, 18px); color: rgba(255,255,255,0.75); margin-bottom: 40px; line-height: 1.8; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 56px; margin-top: auto;}
.hero-stats { display: flex; gap: 0; background: rgba(255,255,255,0.08); backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,0.12); border-radius: 16px; padding: 24px 36px; justify-content: center; margin-top: auto; }
.stat-item { text-align: center; padding: 0 32px; }
.stat-num { display: block; font-size: 32px; font-weight: 800; color: white; line-height: 1; }
.stat-num sup { font-size: 18px; }
.stat-label { font-size: 13px; color: rgba(255,255,255,0.6); margin-top: 6px; display: block; }
.stat-divider { width: 1px; background: rgba(255,255,255,0.15); margin: 4px 0; }
.hero-scroll { position: absolute; bottom: 120px; left: 50%; transform: translateX(-50%); text-align: center; color: rgba(255,255,255,0.4); font-size: 12px; }
.scroll-arrow { width: 24px; height: 24px; border-right: 2px solid rgba(255,255,255,0.3); border-bottom: 2px solid rgba(255,255,255,0.3); transform: rotate(45deg) translateX(-6px); margin: 8px auto; animation: bounce 2s infinite; }
@keyframes bounce { 0%,100%{transform:rotate(45deg) translateY(-6px)} 50%{transform:rotate(45deg) translateY(2px)} }

/* ===================================
   核心优势
   =================================== */
.advantages-section { background: var(--bg); }
.advantages-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.advantage-card { background: white; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 36px 28px; text-align: center; transition: var(--transition); cursor: default; }
.advantage-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.adv-icon { width: 72px; height: 72px; margin: 0 auto 20px; border-radius: 20px; padding: 16px; display: flex; align-items: center; justify-content: center; }
.adv-icon svg { width: 100%; height: 100%; }
.adv-icon-1 { background: linear-gradient(135deg, #E8F4FF, #C3E0FF); color: #0066FF; }
.adv-icon-2 { background: linear-gradient(135deg, #E8FFF4, #C3FFE0); color: #00AA66; }
.adv-icon-3 { background: linear-gradient(135deg, #FFF8E8, #FFE8C3); color: #FF8C00; }
.adv-icon-4 { background: linear-gradient(135deg, #F8E8FF, #E8C3FF); color: #9900CC; }
.advantage-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.advantage-card p { color: var(--text-secondary); font-size: 14px; line-height: 1.7; }

/* ===================================
   产品预览
   =================================== */
.products-preview-section { background: var(--bg-gray); }
.products-preview-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.product-preview-card { background: white; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); transition: var(--transition); cursor: pointer; }
.product-preview-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
/* .pp-img 是图片容器（包含 <img> 子元素），固定高度，图片自适应填充 */
.pp-img { height: 200px; position: relative; overflow: hidden; background: var(--bg-gray); }
.pp-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.pp-overlay { position: absolute; top: 12px; right: 12px; }
.pp-tag { background: rgba(255,255,255,0.9); color: var(--text); font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 6px; }
.pp-tag.hot { background: #FF4444; color: white; }
.pp-tag.new { background: #00AA44; color: white; }
.pp-info { padding: 20px; }
.pp-info h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.pp-info p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 12px; }
.pp-specs { display: flex; flex-direction: column; gap: 4px; margin-bottom: 16px; }
.pp-specs span { font-size: 12px; color: var(--text-muted); background: var(--bg-gray); padding: 3px 8px; border-radius: 4px; display: inline-block; }
.pp-link { font-size: 13px; color: var(--primary); font-weight: 600; }

/* ===================================
   行业覆盖
   =================================== */
.industries-section {
  /* 1. 原有的深色背景作为兜底 */
  background: var(--bg-dark);

  /* 2. 添加背景图片 (这里使用了一张免费的科技风图片，你可以替换链接) */
  background-image: linear-gradient(rgba(15, 23, 42, 0.6), rgba(15, 23, 42, 0.6)), url('images/bg-photo.jpg');

  /* 3. 确保图片覆盖全屏且居中 */
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;

  /* 4. 可选：视差滚动效果，让背景固定，内容滑过，显得更高级 */
  background-attachment: fixed;
}
.industries-section .section-title, .industries-section .section-tag { color: white; }
.industries-section .section-tag { background: rgba(0,102,255,0.3); color: rgba(255,255,255,0.9); }
.industries-grid { display: grid; grid-template-columns: repeat(8, 1fr); gap: 16px; }
.industry-item {
  text-align: center;
  padding: 24px 12px;
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(10px); /* 毛玻璃效果 */
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  transition: var(--transition);
  cursor: default;
}
.industry-item:hover { background: rgba(0,102,255,0.2); border-color: rgba(0,102,255,0.4); transform: translateY(-4px); }
.ind-icon { font-size: 32px; margin-bottom: 8px; }
.industry-item span { font-size: 13px; color: rgba(255,255,255,0.75); font-weight: 500; }







/* ===================================
   客户评价
   =================================== */
.why-section { background: var(--bg-gray); }
.why-inner { display: grid; grid-template-columns: 1fr 1.5fr; gap: 80px; align-items: center; }
.why-left .section-title { text-align: left; }
.why-left .section-desc { text-align: left; margin: 0 0 32px; }
.highlight-num { color: var(--primary); font-size: 1.2em; }
.trust-badges { display: flex; flex-wrap: wrap; gap: 12px; }
.trust-badge { display: flex; align-items: center; gap: 6px; background: white; border: 1px solid var(--border); padding: 8px 16px; border-radius: 8px; font-size: 14px; font-weight: 500; }
.tb-icon { color: #00AA44; font-weight: 700; }
.testimonials { display: flex; flex-direction: column; gap: 20px; }
.testimonial-card { background: white; border-radius: var(--radius-lg); padding: 24px; border: 1px solid var(--border); transition: var(--transition); }
.testimonial-card:hover { box-shadow: var(--shadow-hover); }
.tc-stars { color: #FFC107; font-size: 16px; margin-bottom: 12px; letter-spacing: 2px; }
.tc-content { color: var(--text-secondary); font-size: 14px; line-height: 1.8; margin-bottom: 16px; font-style: italic; }
.tc-author { display: flex; align-items: center; gap: 12px; }
.tc-avatar { width: 48px; height: 48px; background: linear-gradient(135deg, var(--primary), var(--accent)); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: white; font-weight: 700; font-size: 16px; flex-shrink: 0; }
.tc-name { font-weight: 600; font-size: 14px; }
.tc-company { font-size: 12px; color: var(--text-muted); }

/* ===================================
   最新资讯预览
   =================================== */
.news-preview-section { background: white; }
.news-preview-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.news-preview-card { background: var(--bg-gray); border-radius: var(--radius-lg); overflow: hidden; cursor: pointer; transition: var(--transition); border: 1px solid var(--border); }
.news-preview-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
/* .np-img 容器高度统一在下方图片样式区块定义 */
.np-img-1 { background: linear-gradient(135deg, #1A1A2E, #0066FF); display:flex; align-items:center; justify-content:center; font-size:80px; }
.np-img-1::before { content: '🔬'; }
.np-info { padding: 24px; }
.np-cat { display: inline-block; font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 4px; margin-bottom: 12px; }
.np-cat.tech { background: #E8F0FF; color: #0066FF; }
.np-cat.apply { background: #E8FFF0; color: #00AA44; }
.np-cat.company { background: #FFF8E8; color: #FF8C00; }
.np-info h3 { font-size: 18px; font-weight: 700; line-height: 1.4; margin-bottom: 10px; }
.np-info p { color: var(--text-secondary); font-size: 14px; line-height: 1.7; margin-bottom: 16px; }
.np-meta { display: flex; gap: 16px; font-size: 12px; color: var(--text-muted); }
.news-mini-list { display: flex; flex-direction: column; gap: 0; }
.news-mini-item { padding: 20px 0; border-bottom: 1px solid var(--border); cursor: pointer; transition: var(--transition); }
.news-mini-item:hover { padding-left: 8px; }
.news-mini-item:last-child { border-bottom: none; }
.nm-cat { display: inline-block; font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: 4px; margin-bottom: 6px; }
.nm-cat.tech { background: #E8F0FF; color: #0066FF; }
.nm-cat.apply { background: #E8FFF0; color: #00AA44; }
.nm-cat.company { background: #FFF8E8; color: #FF8C00; }
.news-mini-item h4 { font-size: 15px; color: var(--text); line-height: 1.5; margin-bottom: 6px; }
.nm-date { font-size: 12px; color: var(--text-muted); }

/* ===================================
   CTA Banner
   =================================== */
.cta-banner { background: linear-gradient(135deg, #0066FF, #0052CC); padding: 80px 0; text-align: center; }
.cta-banner h2 { font-size: 36px; color: white; font-weight: 800; margin-bottom: 16px; }
.cta-banner p { color: rgba(255,255,255,0.8); font-size: 18px; margin-bottom: 40px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===================================
   Footer
   =================================== */
.footer { background: #0D1B3E; color: rgba(255,255,255,0.7); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-logo .logo-main { color: white; }
.footer-logo .logo-sub { color: rgba(255,255,255,0.4); }
.footer-desc { font-size: 13px; line-height: 1.8; margin-bottom: 20px; color: rgba(255,255,255,0.5); }
.footer-certifications { display: flex; gap: 8px; flex-wrap: wrap; }
.cert-badge { background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.15); color: rgba(255,255,255,0.7); font-size: 11px; padding: 3px 10px; border-radius: 4px; }
.footer h4 { color: white; font-size: 15px; font-weight: 600; margin-bottom: 20px; }
.footer ul { display: flex; flex-direction: column; gap: 10px; }
.footer ul li a { font-size: 14px; color: rgba(255,255,255,0.5); transition: var(--transition); }
.footer ul li a:hover { color: var(--accent); }
.fc-item { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 10px; font-size: 13px; color: rgba(255,255,255,0.55); }
.footer-bottom { text-align: center; padding: 20px 0; font-size: 13px; color: rgba(255,255,255,0.3); }

/* ===================================
   页面 Hero（内页）
   =================================== */
.page-hero { background: linear-gradient(135deg, #0D1B3E, #0D2D6B); padding: 120px 0 60px; }
.ph-breadcrumb { font-size: 13px; color: rgba(255,255,255,0.5); margin-bottom: 16px; }
.ph-breadcrumb a { color: rgba(255,255,255,0.5); }
.ph-breadcrumb a:hover { color: white; }
.page-hero h1 { font-size: 42px; color: white; font-weight: 800; margin-bottom: 12px; }
.page-hero p { font-size: 18px; color: rgba(255,255,255,0.7); }

/* ===================================
   关于智洁
   =================================== */
.about-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.about-intro-text .section-title { text-align: left; }
.about-intro-text p { color: var(--text-secondary); line-height: 1.9; margin-bottom: 16px; font-size: 15px; }
.about-key-numbers { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 32px; }
.akn-item { text-align: center; background: var(--primary-light); border-radius: var(--radius); padding: 20px 12px; }
.akn-num { display: block; font-size: 28px; font-weight: 800; color: var(--primary); }
.akn-item span:last-child { font-size: 12px; color: var(--text-muted); margin-top: 4px; display: block; }
.factory-showcase { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
/* .factory-img 是图片容器（含 <img> 和 <span> 子元素），600×400 比例 */
.factory-img { height: 200px; border-radius: var(--radius); overflow: hidden; position: relative; background: var(--bg-gray); }
.factory-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.factory-img span { position: absolute; bottom: 8px; left: 8px; background: rgba(0,0,0,0.5); color: white; font-size: 11px; font-weight: 500; padding: 3px 8px; border-radius: 4px; }

.culture-section { background: var(--bg-gray); }
.culture-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.culture-card { background: white; border-radius: var(--radius-lg); padding: 40px 32px; text-align: center; border: 1px solid var(--border); transition: var(--transition); }
.culture-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.culture-icon { font-size: 48px; margin-bottom: 20px; display: flex; align-items: center; justify-content: center; min-height: 56px; }
.culture-card h3 { font-size: 20px; font-weight: 700; color: var(--text); margin-bottom: 16px; }
.culture-card p { color: var(--text-secondary); font-size: 15px; line-height: 1.8; }
.values-tags { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin-top: 8px; }
.values-tags span { background: var(--primary-light); color: var(--primary); font-weight: 600; padding: 6px 16px; border-radius: 20px; font-size: 15px; }

/* 时间线 */
.timeline-section { background: white; }
.timeline { max-width: 800px; margin: 0 auto; position: relative; }
.timeline::before { content: ''; position: absolute; left: 110px; top: 0; bottom: 0; width: 2px; background: linear-gradient(180deg, var(--primary), var(--accent)); }
.timeline-item { display: grid; grid-template-columns: 100px 40px 1fr; gap: 0 20px; align-items: start; margin-bottom: 48px; position: relative; }
.tl-year { text-align: right; font-size: 18px; font-weight: 800; color: var(--primary); padding-top: 2px; }
.tl-dot { width: 16px; height: 16px; background: var(--primary); border: 3px solid white; border-radius: 50%; box-shadow: 0 0 0 3px var(--primary-light); position: relative; z-index: 1; margin-top: 4px; flex-shrink: 0; }
.tl-dot.active { background: var(--accent); box-shadow: 0 0 0 3px rgba(0,200,255,0.2); }
.tl-content { background: var(--bg-gray); border-radius: var(--radius); padding: 20px 24px; border-left: 3px solid var(--primary); }
.tl-content h4 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.tl-content p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* 资质证书 */
.certs-section { background: var(--bg-gray); }
.certs-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.cert-card { background: white; border-radius: var(--radius); padding: 24px; text-align: center; border: 1px solid var(--border); transition: var(--transition); }
.cert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
/* .cert-img 是 <img> 标签，300×200 尺寸比例 */
.cert-img { width: 100%; height: 150px; object-fit: contain; border-radius: 8px; margin: 0 auto 16px; display: block; background: var(--bg-gray); padding: 8px; }
.cert-card span { font-size: 13px; color: var(--text-secondary); font-weight: 500; line-height: 1.4; }

/* ===================================
   产品中心
   =================================== */
.products-layout { display: grid; grid-template-columns: 260px 1fr; gap: 40px; }
.products-sidebar { position: sticky; top: 90px; height: fit-content; }
.filter-group { background: white; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 20px; }
.filter-group h4 { font-size: 15px; font-weight: 700; margin-bottom: 16px; color: var(--text); }
.filter-options { display: flex; flex-direction: column; gap: 8px; }
.filter-option { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-secondary); cursor: pointer; padding: 6px 8px; border-radius: 6px; transition: var(--transition); }
.filter-option:hover { background: var(--primary-light); color: var(--primary); }
.filter-option.active { color: var(--primary); font-weight: 600; }
.filter-option input { width: 14px; height: 14px; cursor: pointer; accent-color: var(--primary); }
.sidebar-contact-box { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); border-radius: var(--radius); padding: 24px; color: white; }
.sidebar-contact-box h4 { color: white; font-size: 16px; margin-bottom: 8px; }
.sidebar-contact-box p { font-size: 13px; color: rgba(255,255,255,0.8); margin-bottom: 16px; line-height: 1.6; }
.sidebar-contact-box .btn-primary { background: white; color: var(--primary); }

.products-toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.products-count { font-size: 14px; color: var(--text-muted); }
.products-sort select { border: 1px solid var(--border); border-radius: 6px; padding: 6px 12px; font-size: 14px; cursor: pointer; outline: none; }
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.product-card { background: white; border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; transition: var(--transition); cursor: pointer; }
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.pc-img { height: 180px; position: relative; display: flex; align-items: center; justify-content: center; font-size: 64px; }
.pc-img-1 { background: linear-gradient(135deg, #E3F2FD, #BBDEFB); }
.pc-img-1::before { content: '🔧'; }
.pc-img-2 { background: linear-gradient(135deg, #E8F5E9, #C8E6C9); }
.pc-img-2::before { content: '⚙️'; }
.pc-img-3 { background: linear-gradient(135deg, #FFF3E0, #FFE0B2); }
.pc-img-3::before { content: '🏭'; }
.pc-img-4 { background: linear-gradient(135deg, #F3E5F5, #E1BEE7); }
.pc-img-4::before { content: '🤖'; }
.pc-img-5 { background: linear-gradient(135deg, #FCE4EC, #F8BBD0); }
.pc-img-5::before { content: '🏥'; }
.pc-img-6 { background: linear-gradient(135deg, #E0F2F1, #B2DFDB); }
.pc-img-6::before { content: '🔬'; }
.pc-badges { position: absolute; top: 10px; left: 10px; display: flex; gap: 6px; flex-wrap: wrap; }
.badge { font-size: 11px; font-weight: 700; padding: 3px 8px; border-radius: 4px; }
.badge.hot { background: #FF4444; color: white; }
.badge.new { background: #00AA44; color: white; }
.badge.custom { background: var(--primary); color: white; }
.pc-info { padding: 16px; }
.pc-info h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; line-height: 1.4; }
.pc-specs { font-size: 12px; color: var(--text-muted); margin-bottom: 10px; line-height: 1.6; }
.pc-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.tag { background: var(--bg-gray); color: var(--text-secondary); font-size: 11px; padding: 3px 8px; border-radius: 4px; }
.pc-actions { display: flex; gap: 8px; }

/* ===================================
   新闻中心
   =================================== */
.news-layout { display: grid; grid-template-columns: 1fr 300px; gap: 48px; }

/* ---------- Tabs ---------- */
.news-tabs {
  display: flex; gap: 6px; margin-bottom: 28px;
  padding: 6px; background: #F4F6FA; border-radius: 12px;
  border: none;
}
.news-tab {
  background: none; border: none; padding: 9px 20px;
  font-size: 14px; font-weight: 600; color: var(--text-muted);
  cursor: pointer; border-radius: 8px; transition: all 0.2s;
  border-bottom: none; margin-bottom: 0;
}
.news-tab:hover { color: var(--primary); background: white; }
.news-tab.active { background: white; color: var(--primary); box-shadow: 0 2px 8px rgba(0,0,0,0.08); }

/* ---------- List ---------- */
.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-article-card {
  display: grid; grid-template-columns: 220px 1fr;
  background: white; border: 1px solid #EAECF0;
  border-radius: 14px; overflow: hidden; cursor: pointer;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.news-article-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0,60,180,0.10);
  border-color: #C7D8FF;
}
.news-article-card.hidden { display: none; }

/* ---------- 图片区 ---------- */
.nac-img {
  width: 220px; min-width: 220px; height: 170px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 52px; transition: transform 0.3s ease;
  position: relative; overflow: hidden;
}
.news-article-card:hover .nac-img { transform: scale(1.04); }
img.nac-img { object-fit: cover; font-size: 0; }

/* 图片主题色 */
.nac-img-1 { background: linear-gradient(140deg, #D6E8FF, #A8CBFF); }
.nac-img-1::before { content: '🔬'; }
.nac-img-2 { background: linear-gradient(140deg, #D6F5E8, #A3E4C9); }
.nac-img-2::before { content: '💧'; }
.nac-img-3 { background: linear-gradient(140deg, #FFF0D6, #FFD8A8); }
.nac-img-3::before { content: '🧪'; }
.nac-img-4 { background: linear-gradient(140deg, #FFE0EC, #FFAECB); }
.nac-img-4::before { content: '🏭'; }
.nac-img-5 { background: linear-gradient(140deg, #EFD6FF, #D8A8FF); }
.nac-img-5::before { content: '⚛️'; }

/* ---------- 内容区 ---------- */
.nac-info {
  padding: 20px 22px; display: flex; flex-direction: column;
  justify-content: center; gap: 0;
}
.nac-meta {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 10px; flex-wrap: wrap;
}
.nac-cat {
  font-size: 11px; font-weight: 700; padding: 3px 10px;
  border-radius: 20px; letter-spacing: 0.3px;
}
.nac-cat.tech    { background: #E8F0FF; color: #0052CC; }
.nac-cat.apply   { background: #E3FAF0; color: #00875A; }
.nac-cat.company { background: #FFF4E0; color: #B85C00; }
.nac-date  { font-size: 12px; color: #9AA5B8; }
.nac-views { font-size: 12px; color: #9AA5B8; }
.nac-info h3 {
  font-size: 16px; font-weight: 700; line-height: 1.55;
  margin-bottom: 9px; color: #1A2540;
  display: -webkit-box; -webkit-line-clamp: 2;
  -webkit-box-orient: vertical; overflow: hidden;
}
.nac-info p {
  font-size: 13px; color: #6B7899; line-height: 1.75;
  margin-bottom: 14px;
  display: -webkit-box; -webkit-line-clamp: 2;
  -webkit-box-orient: vertical; overflow: hidden;
}
.nac-readmore {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 13px; color: var(--primary); font-weight: 600;
  margin-top: auto;
}
.nac-readmore::after { content: '→'; transition: transform 0.2s; }
.news-article-card:hover .nac-readmore::after { transform: translateX(4px); }

/* ---------- 首条精选卡片（大图顶部横贯） ---------- */
.featured-card {
  grid-template-columns: 1fr !important;
  border-color: #D0E4FF;
  background: linear-gradient(to bottom, #F6F9FF, white);
}
.featured-card .nac-img {
  width: 100% !important; min-width: 0 !important;
  height: 220px !important; border-radius: 0;
}
.featured-card .nac-info { padding: 22px 26px 24px; }
.featured-card .nac-info h3 {
  font-size: 19px; font-weight: 800;
  -webkit-line-clamp: 2;
}

.news-sidebar { position: sticky; top: 90px; height: fit-content; }
.ns-widget { background: white; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 20px; }
.ns-widget h4 { font-size: 15px; font-weight: 700; margin-bottom: 16px; color: var(--text); padding-bottom: 12px; border-bottom: 2px solid var(--primary-light); }
.hot-articles { display: flex; flex-direction: column; gap: 12px; }
.hot-article { display: flex; align-items: flex-start; gap: 10px; cursor: pointer; padding: 8px; border-radius: 6px; transition: var(--transition); }
.hot-article:hover { background: var(--bg-gray); }
.ha-rank { width: 22px; height: 22px; border-radius: 4px; background: var(--bg-gray); color: var(--text-muted); font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.ha-rank.rank-1 { background: #FF4444; color: white; }
.ha-rank.rank-2 { background: #FF8C00; color: white; }
.ha-rank.rank-3 { background: #FFC107; color: white; }
.hot-article div p { font-size: 13px; color: var(--text); line-height: 1.5; margin-bottom: 3px; }
.hot-article div span { font-size: 11px; color: var(--text-muted); }
.sidebar-products { display: flex; flex-direction: column; gap: 8px; }
.sidebar-products span { font-size: 13px; color: var(--text-secondary); padding: 8px 12px; border-radius: 6px; border: 1px solid var(--border); cursor: pointer; transition: var(--transition); display: block; }
.sidebar-products span:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }
.ns-contact-form { }
.form-input { width: 100%; border: 1px solid var(--border); border-radius: 6px; padding: 10px 12px; font-size: 13px; outline: none; transition: var(--transition); margin-bottom: 8px; }
.form-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }
.form-textarea { width: 100%; border: 1px solid var(--border); border-radius: 6px; padding: 10px 12px; font-size: 13px; outline: none; transition: var(--transition); resize: vertical; margin-bottom: 8px; }
.form-textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }

/* ---------- news-card（EJS模板渲染类名）---------- */
.news-list { display: flex; flex-direction: column; gap: 20px; }

.news-card {
  background: white;
  border: 1.5px solid #EAECF0;
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,60,180,0.10);
  border-color: #C7D8FF;
}
.news-card:first-child { border-color: #D0E4FF; background: linear-gradient(to bottom, #F6F9FF, white); }

.news-card-link {
  display: grid;
  grid-template-columns: 220px 1fr;
  text-decoration: none;
  color: inherit;
}
.news-card:first-child .news-card-link {
  grid-template-columns: 1fr;
}

/* 图片区 */
.news-card-img {
  position: relative;
  width: 220px;
  min-width: 220px;
  height: 170px;
  overflow: hidden;
  flex-shrink: 0;
  background: linear-gradient(140deg, #D6E8FF, #A8CBFF);
}
.news-card:first-child .news-card-img {
  width: 100%;
  min-width: 0;
  height: 220px;
}
.news-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.35s ease;
}
.news-card:hover .news-card-img img { transform: scale(1.06); }

/* 分类角标 */
.news-card-cat {
  position: absolute;
  top: 10px;
  left: 10px;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  letter-spacing: 0.3px;
  backdrop-filter: blur(4px);
}
.news-card-cat.tech    { background: rgba(232,240,255,0.92); color: #0052CC; }
.news-card-cat.apply   { background: rgba(227,250,240,0.92); color: #00875A; }
.news-card-cat.company { background: rgba(255,244,224,0.92); color: #B85C00; }
/* 首条精选角标：右上角，橙红 */
.news-card:first-child .news-card-cat {
  top: 12px;
  right: 12px;
  left: auto;
  background: linear-gradient(135deg, #FF6B35, #FF4757);
  color: white;
}

/* 内容区 */
.news-card-body {
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0;
}
.news-card:first-child .news-card-body { padding: 22px 28px 26px; }

.news-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.news-card-date, .news-card-views { font-size: 12px; color: #9AA5B8; }

.news-card-body h3 {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  margin-bottom: 9px;
  color: #1A2540;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card:first-child .news-card-body h3 {
  font-size: 20px;
  font-weight: 800;
  -webkit-line-clamp: 2;
}

.news-card-body p {
  font-size: 13px;
  color: #6B7899;
  line-height: 1.75;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-readmore {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  margin-top: auto;
  transition: gap 0.2s;
}
.news-card:hover .news-card-readmore { gap: 8px; }

/* 热门文章链接 */
.hot-article-link { text-decoration: none; color: inherit; display: block; }
.hot-article-link:hover .hot-article { background: var(--bg-gray); border-radius: 6px; }

/* ===================================
   联系我们
   =================================== */
.contact-layout { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; }
.contact-info-panel h2, .contact-form-panel h2 { font-size: 28px; font-weight: 800; margin-bottom: 12px; }
.contact-intro { color: var(--text-secondary); line-height: 1.8; margin-bottom: 32px; font-size: 15px; }
.contact-info-cards { display: flex; flex-direction: column; gap: 16px; margin-bottom: 32px; }
.cic-item { display: flex; align-items: flex-start; gap: 16px; padding: 16px 20px; background: var(--bg-gray); border-radius: var(--radius); border: 1px solid var(--border); transition: var(--transition); }
.cic-item:hover { border-color: var(--primary); background: var(--primary-light); }
.cic-icon { font-size: 24px; flex-shrink: 0; }
.cic-label { font-size: 12px; color: var(--text-muted); margin-bottom: 4px; }
.cic-value { font-size: 15px; color: var(--text); font-weight: 500; }
a.cic-value:hover { color: var(--primary); }
.wechat-qr { display: flex; align-items: center; gap: 20px; padding: 20px; background: var(--bg-gray); border-radius: var(--radius); border: 1px solid var(--border); }
.qr-box { flex-shrink: 0; }
.qr-placeholder { width: 80px; height: 80px; background: white; border: 2px solid var(--border); border-radius: 8px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; padding: 8px; }
.qr-grid { width: 48px; height: 48px; background: linear-gradient(45deg, #000 25%, transparent 25%, transparent 75%, #000 75%), linear-gradient(45deg, #000 25%, transparent 25%, transparent 75%, #000 75%), linear-gradient(0deg, #000 0%, #000 50%, transparent 50%), linear-gradient(90deg, #000 0%, #000 50%, transparent 50%); background-size: 8px 8px, 8px 8px, 8px 8px, 8px 8px; background-position: 0 0, 4px 4px, 0 4px, 4px 0; opacity: 0.3; border-radius: 4px; }
.qr-placeholder span { font-size: 9px; color: var(--text-muted); text-align: center; }
.wechat-qr strong { font-size: 14px; display: block; margin-bottom: 4px; }
.wechat-qr p { font-size: 12px; color: var(--text-muted); line-height: 1.6; }

.contact-form-panel > p { color: var(--text-secondary); margin-bottom: 28px; font-size: 15px; }
.contact-form { }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.required { color: #FF4444; }
.contact-form .form-input, .contact-form .form-textarea { margin-bottom: 0; font-size: 14px; padding: 12px 16px; }
.form-agree { }
.checkbox-label { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; color: var(--text-secondary); cursor: pointer; line-height: 1.5; }
.checkbox-label input { width: 16px; height: 16px; margin-top: 1px; accent-color: var(--primary); flex-shrink: 0; }
.form-error-msg { margin-top: 12px; padding: 10px 14px; background: #FFF2F2; border: 1px solid #FFCCCC; border-radius: 6px; color: #CC0000; font-size: 14px; }
.form-success { text-align: center; padding: 48px 24px; }
.success-icon { width: 64px; height: 64px; background: #E8FFF0; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 28px; color: #00AA44; margin: 0 auto 16px; }
.form-success h3 { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.form-success p { color: var(--text-secondary); }

.map-section { padding: 0; }
.map-placeholder { position: relative; height: 400px; overflow: hidden; }
.map-mock { width: 100%; height: 100%; background: #E8F0FF; position: relative; display: flex; align-items: center; justify-content: center; }
.map-bg { position: absolute; inset: 0; background: repeating-linear-gradient(0deg, rgba(0,102,255,0.04) 0px, rgba(0,102,255,0.04) 1px, transparent 1px, transparent 40px), repeating-linear-gradient(90deg, rgba(0,102,255,0.04) 0px, rgba(0,102,255,0.04) 1px, transparent 1px, transparent 40px); }
.map-marker { position: relative; z-index: 2; text-align: center; animation: mapBounce 2s ease-in-out infinite; }
.map-marker span { font-size: 48px; display: block; filter: drop-shadow(0 4px 8px rgba(0,102,255,0.3)); }
.map-popup { background: white; border-radius: 8px; padding: 8px 16px; font-size: 14px; font-weight: 600; box-shadow: 0 4px 16px rgba(0,0,0,0.15); white-space: nowrap; margin-top: 8px; }
@keyframes mapBounce { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)} }
.map-info-overlay { position: absolute; bottom: 24px; left: 24px; background: white; border-radius: var(--radius); padding: 16px 20px; box-shadow: var(--shadow); }
.map-info-overlay strong { display: block; font-size: 15px; color: var(--text); margin-bottom: 4px; }
.map-info-overlay p { font-size: 13px; color: var(--text-secondary); margin-bottom: 2px; }
.map-info-overlay small { font-size: 12px; color: var(--text-muted); }

/* ===================================
   Modal
   =================================== */
.modal-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5); backdrop-filter: blur(4px); z-index: 2000; align-items: center; justify-content: center; padding: 20px; }
.modal-overlay.active { display: flex; }
.modal-box { background: white; border-radius: var(--radius-lg); max-width: 900px; width: 100%; max-height: 90vh; overflow-y: auto; position: relative; }
.modal-article { max-width: 800px; }
.modal-close { position: absolute; top: 16px; right: 16px; background: var(--bg-gray); border: none; width: 32px; height: 32px; border-radius: 50%; cursor: pointer; font-size: 16px; display: flex; align-items: center; justify-content: center; z-index: 1; transition: var(--transition); }
.modal-close:hover { background: #FFE8E8; color: #FF4444; }
.modal-product-content { display: grid; grid-template-columns: 1fr 1.2fr; min-height: 500px; }
.modal-product-img { border-radius: var(--radius-lg) 0 0 var(--radius-lg); display: flex; align-items: center; justify-content: center; font-size: 120px; min-height: 400px; }
.modal-product-info { padding: 40px 36px; }
.modal-product-info h2 { font-size: 22px; font-weight: 800; margin-bottom: 24px; line-height: 1.4; }
.params-table { width: 100%; border-collapse: collapse; margin-bottom: 24px; font-size: 14px; }
.params-table tr { border-bottom: 1px solid var(--border); }
.params-table td { padding: 10px 12px; }
.params-table td:first-child { color: var(--text-muted); background: var(--bg-gray); width: 40%; font-weight: 500; }
.params-table td:last-child { color: var(--text); font-weight: 600; }
.product-features { margin-bottom: 28px; }
.product-features h4 { font-size: 15px; font-weight: 700; margin-bottom: 12px; color: var(--text); }
.product-features ul { list-style: none; }
.product-features li { font-size: 14px; color: var(--text-secondary); padding: 6px 0; border-bottom: 1px solid var(--border); display: flex; align-items: flex-start; gap: 8px; }
.product-features li::before { content: '✓'; color: #00AA44; font-weight: 700; flex-shrink: 0; }
.modal-actions { display: flex; gap: 12px; }
#articleContent { padding: 40px; }
#articleContent h2 { font-size: 26px; font-weight: 800; margin-bottom: 16px; line-height: 1.4; }
#articleContent .article-meta { display: flex; gap: 16px; font-size: 13px; color: var(--text-muted); margin-bottom: 32px; padding-bottom: 20px; border-bottom: 1px solid var(--border); }
#articleContent h3 { font-size: 18px; font-weight: 700; margin: 28px 0 12px; color: var(--text); }
#articleContent p { color: var(--text-secondary); line-height: 1.9; margin-bottom: 16px; font-size: 15px; }
#articleContent .tip-box { background: var(--primary-light); border-left: 4px solid var(--primary); border-radius: 0 8px 8px 0; padding: 16px 20px; margin: 20px 0; }
#articleContent .tip-box p { color: var(--primary-dark); margin: 0; font-weight: 500; }
#articleContent table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14px; }
#articleContent th { background: var(--bg-dark); color: white; padding: 12px 16px; text-align: left; }
#articleContent td { padding: 10px 16px; border-bottom: 1px solid var(--border); }
#articleContent tr:nth-child(even) td { background: var(--bg-gray); }

/* ===================================
   页面切换
   =================================== */
.page { display: none; }
.page.active { display: block; }

/* ===================================
   响应式
   =================================== */
@media (max-width: 1024px) {
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .products-preview-grid { grid-template-columns: repeat(2, 1fr); }
  .industries-grid { grid-template-columns: repeat(4, 1fr); }
  .why-inner { grid-template-columns: 1fr; gap: 48px; }
  .news-preview-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .about-intro { grid-template-columns: 1fr; }
  .products-layout { grid-template-columns: 1fr; }
  .products-sidebar { position: static; }
  .news-layout { grid-template-columns: 1fr; }
  .news-sidebar { position: static; }
  .contact-layout { grid-template-columns: 1fr; }
  .certs-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .hero { height: 70vh; min-height: 460px; max-height: 650px; }
  .nav-links, .nav-cta { display: none; }
  .menu-toggle { display: flex; }
  .nav-links.open { display: flex; flex-direction: column; position: absolute; top: 70px; left: 0; right: 0; background: white; box-shadow: 0 8px 24px rgba(0,0,0,0.1); padding: 16px; gap: 4px; z-index: 100; }
  .hero-stats { flex-direction: column; gap: 16px; padding: 20px; }
  .stat-divider { width: 80px; height: 1px; }
  .advantages-grid { grid-template-columns: 1fr; }
  .products-preview-grid { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: repeat(4, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .culture-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .news-article-card { grid-template-columns: 1fr; }
  /* 移动端新闻卡片单列时，图片改为全宽 */
  .nac-img { width: 100%; min-width: 0; height: 180px; }
  img.nac-img { width: 100%; }
  .form-row { grid-template-columns: 1fr; }
  .modal-product-content { grid-template-columns: 1fr; }
  .modal-product-img { border-radius: var(--radius-lg) var(--radius-lg) 0 0; min-height: 200px; }
  .timeline::before { left: 60px; }
  .timeline-item { grid-template-columns: 50px 30px 1fr; gap: 0 12px; }
  .tl-year { font-size: 14px; }
  .certs-grid { grid-template-columns: repeat(2, 1fr); }
  .about-key-numbers { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: center; }
  .cta-actions { flex-direction: column; align-items: center; }
  .products-grid { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ===================================
   产品中心 - 升级样式
   =================================== */

/* 统计横幅 */
.products-stats-bar { background: linear-gradient(135deg, var(--primary), #0052CC); padding: 20px 0; }
.psb-inner { display: flex; align-items: center; justify-content: center; gap: 0; }
.psb-item { text-align: center; padding: 0 40px; }
.psb-num { display: block; font-size: 22px; font-weight: 800; color: white; }
.psb-item span:last-child { font-size: 12px; color: rgba(255,255,255,0.7); }
.psb-divider { width: 1px; height: 40px; background: rgba(255,255,255,0.25); }

/* 新筛选按钮风格 */
.products-page-section { background: var(--bg-gray); }
.filter-group { background: white; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 20px; }
.filter-group h4 { font-size: 14px; font-weight: 700; margin-bottom: 14px; color: var(--text); display: flex; align-items: center; gap: 6px; }
.filter-icon { font-size: 16px; }
.filter-options { display: flex; flex-direction: column; gap: 6px; }
.filter-btn { padding: 8px 14px; border-radius: 6px; font-size: 13px; color: var(--text-secondary); cursor: pointer; transition: var(--transition); border: 1px solid var(--border); background: white; text-align: left; }
.filter-btn:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }
.filter-btn.active { background: var(--primary); color: white; border-color: var(--primary); font-weight: 600; }
.sidebar-contact-box { background: linear-gradient(135deg, #0D1B3E, #0D2D6B); border-radius: var(--radius); padding: 24px; color: white; }
.scb-icon { font-size: 32px; margin-bottom: 12px; }
.sidebar-contact-box h4 { color: white; font-size: 16px; margin-bottom: 8px; }
.sidebar-contact-box p { font-size: 13px; color: rgba(255,255,255,0.75); margin-bottom: 16px; line-height: 1.7; }
.btn-white-solid { background: white; color: var(--primary); border: none; border-radius: 8px; padding: 10px 20px; font-size: 14px; font-weight: 700; cursor: pointer; transition: var(--transition); display: inline-flex; align-items: center; justify-content: center; }
.btn-white-solid:hover { background: var(--primary-light); transform: translateY(-2px); }

/* 产品卡片 - 视觉化机器图示 */
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.product-card { background: white; border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; transition: var(--transition); cursor: pointer; }
.product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.pc-visual { height: 180px; position: relative; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.pc-v1 { background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%); }
.pc-v2 { background: linear-gradient(135deg, #E8F5E9 0%, #A5D6A7 100%); }
.pc-v3 { background: linear-gradient(135deg, #FFF3E0 0%, #FFCC80 100%); }
.pc-v4 { background: linear-gradient(135deg, #F3E5F5 0%, #CE93D8 100%); }
.pc-v5 { background: linear-gradient(135deg, #FCE4EC 0%, #F48FB1 100%); }
.pc-v6 { background: linear-gradient(135deg, #E0F2F1 0%, #80CBC4 100%); }
.pc-v7 { background: linear-gradient(135deg, #FFF8E1 0%, #FFE082 100%); }
.pc-v8 { background: linear-gradient(135deg, #E8EAF6 0%, #9FA8DA 100%); }
.pc-v9 { background: linear-gradient(135deg, #F1F8E9 0%, #AED581 100%); }
.pc-v10 { background: linear-gradient(135deg, #E0F7FA 0%, #80DEEA 100%); }
.pc-v11 { background: linear-gradient(135deg, #EFEBE9 0%, #BCAAA4 100%); }
.pc-v12 { background: linear-gradient(135deg, #EDE7F6 0%, #B39DDB 100%); }
.pc-machine-img { display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; }



/* CSS机器图示 */
.pc-machine { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.mc-body { background: rgba(255,255,255,0.9); border: 2px solid rgba(0,0,0,0.15); border-radius: 8px; padding: 12px 14px; display: flex; align-items: center; gap: 10px; min-width: 100px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.mc-body.multi { flex-direction: column; gap: 6px; }
.mc-body.med { background: rgba(255,240,245,0.95); border-color: rgba(255,100,150,0.3); }
.mc-body.opt { background: rgba(240,255,250,0.95); border-color: rgba(0,180,150,0.3); flex-direction: column; gap: 6px; }
.mc-body.pcb-b { background: rgba(235,240,255,0.95); border-color: rgba(80,100,200,0.3); flex-direction: column; }
.mc-body.semi-b { flex-direction: column; }
.mc-screen { background: linear-gradient(135deg, #0D1B3E, #0052CC); color: white; border-radius: 5px; padding: 4px 8px; font-size: 10px; font-weight: 700; line-height: 1.3; text-align: center; min-width: 48px; }
.mc-screen.small { font-size: 9px; }
.mc-slot { width: 44px; height: 36px; background: linear-gradient(180deg, #C8E6FF, #90C3FF); border: 2px solid rgba(0,80,200,0.3); border-radius: 4px; }
.mc-slot.large { width: 56px; height: 44px; }
.mc-slot.sm { width: 32px; height: 28px; }
.mc-slot.med { background: linear-gradient(180deg, #FFD6E8, #FF9ABD); border-color: rgba(200,50,100,0.3); }
.mc-slot-row { display: flex; gap: 5px; align-items: center; }
.mc-slot-row.opt { gap: 8px; }
.mc-slot-s { width: 24px; height: 22px; background: linear-gradient(180deg, #C8E6FF, #90C3FF); border: 1.5px solid rgba(0,80,200,0.25); border-radius: 3px; }
.mc-slot-s.hi { background: linear-gradient(180deg, #D4C8FF, #A090FF); border-color: rgba(100,50,200,0.3); }
.mc-base { background: rgba(0,0,0,0.12); border-radius: 4px; height: 8px; width: 110px; }
.mc-base.wide { width: 150px; }
.mc-base.sm { width: 80px; }
.pc-machine.single-slot.large .mc-base { width: 140px; }

/* 传送带机器 */
.pc-machine.conveyor .mc-conveyor-body { background: rgba(255,255,255,0.9); border: 2px solid rgba(0,0,0,0.15); border-radius: 8px; padding: 10px 16px; display: flex; align-items: center; gap: 10px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.mc-conveyor-belt { width: 70px; height: 14px; background: repeating-linear-gradient(90deg, rgba(0,0,0,0.1) 0px, rgba(0,0,0,0.1) 3px, transparent 3px, transparent 8px); border: 2px solid rgba(0,0,0,0.2); border-radius: 20px; }

/* 碳氢机 */
.pc-machine.hydrocarbon .mc-hc-body { background: rgba(255,255,255,0.9); border: 2px solid rgba(0,0,0,0.15); border-radius: 10px; padding: 14px; display: flex; flex-direction: column; align-items: center; gap: 8px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.mc-hc-tank { width: 60px; height: 44px; background: linear-gradient(135deg, #E8F5E9, #A5D6A7); border: 2px solid rgba(0,150,80,0.3); border-radius: 6px; position: relative; }
.mc-hc-tank::after { content: ''; position: absolute; top: 4px; left: 8px; right: 8px; height: 8px; background: rgba(0,200,100,0.3); border-radius: 3px; }

/* 投入式振板 */
.pc-machine.panel-type .mc-panel-body { background: rgba(255,255,255,0.9); border: 2px solid rgba(0,0,0,0.15); border-radius: 8px; padding: 12px; display: flex; flex-direction: column; align-items: center; gap: 8px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.mc-panel-plate { width: 80px; height: 40px; background: linear-gradient(180deg, #B2EBF2, #80DEEA); border: 2px solid rgba(0,150,180,0.4); border-radius: 6px; position: relative; overflow: hidden; }
.mc-panel-plate::before { content: ''; position: absolute; inset: 4px; background: repeating-linear-gradient(0deg, rgba(0,150,180,0.15) 0px, rgba(0,150,180,0.15) 2px, transparent 2px, transparent 6px); }

/* 重载机 */
.pc-machine.heavy .mc-heavy-body { background: rgba(255,255,255,0.9); border: 2px solid rgba(0,0,0,0.15); border-radius: 10px; padding: 12px 16px; display: flex; align-items: center; gap: 12px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.mc-heavy-chamber { width: 60px; height: 52px; background: linear-gradient(180deg, #D7CCC8, #BCAAA4); border: 2px solid rgba(100,70,60,0.3); border-radius: 6px; }

/* 医用机 */
.pc-machine.medical .mc-body.med { flex-direction: column; }

.pc-badges { position: absolute; top: 10px; left: 10px; display: flex; gap: 5px; flex-wrap: wrap; }
.badge { font-size: 11px; font-weight: 700; padding: 3px 8px; border-radius: 4px; }
.badge.hot { background: #FF4444; color: white; }
.badge.new { background: #00AA44; color: white; }
.badge.custom { background: var(--primary); color: white; }
.badge.spec { background: #FF8C00; color: white; }
.pc-info { padding: 14px 16px; }
.pc-info h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; line-height: 1.4; color: var(--text); }
.pc-specs { font-size: 12px; color: var(--text-muted); margin-bottom: 8px; line-height: 1.6; }
.pc-tags { display: flex; gap: 5px; flex-wrap: wrap; margin-bottom: 12px; }
.tag { background: var(--bg-gray); color: var(--text-secondary); font-size: 11px; padding: 2px 7px; border-radius: 4px; }
.pc-actions { display: flex; gap: 8px; }

/* 无结果 */
.no-results { text-align: center; padding: 60px 20px; }
.nr-icon { font-size: 48px; margin-bottom: 16px; }
.no-results h3 { font-size: 20px; color: var(--text); margin-bottom: 8px; }
.no-results p { color: var(--text-secondary); }
.no-results a { color: var(--primary); }

/* 定制方案横幅 */
.custom-solution-banner { background: linear-gradient(135deg, #0D1B3E 0%, #0D2D6B 100%); padding: 56px 0; }
.csb-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.csb-left h3 { font-size: 26px; color: white; font-weight: 800; margin-bottom: 12px; }
.csb-left p { color: rgba(255,255,255,0.7); font-size: 15px; line-height: 1.7; max-width: 560px; }
.csb-right { display: flex; gap: 16px; flex-shrink: 0; flex-wrap: wrap; }

/* 产品详情弹窗 - 升级 */
.modal-product-visual { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 40px 24px; border-radius: var(--radius-lg) 0 0 var(--radius-lg); min-height: 420px; }
.modal-prod-icon { font-size: 100px; margin-bottom: 16px; }
.modal-prod-badge-row { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
.modal-product-content { display: grid; grid-template-columns: 1fr 1.4fr; }
.modal-product-info { padding: 36px 40px; overflow-y: auto; max-height: 90vh; }
.modal-prod-cat { display: inline-block; font-size: 12px; font-weight: 700; padding: 3px 12px; border-radius: 20px; background: var(--primary-light); color: var(--primary); margin-bottom: 10px; }
.modal-product-info h2 { font-size: 20px; font-weight: 800; margin-bottom: 20px; line-height: 1.4; }
.modal-params h4 { font-size: 14px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.modal-prod-apps { margin-bottom: 24px; }
.modal-prod-apps h4 { font-size: 14px; font-weight: 700; margin-bottom: 10px; }
.modal-prod-apps .apps-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.apps-tags span { background: var(--bg-gray); border: 1px solid var(--border); color: var(--text-secondary); font-size: 12px; padding: 4px 12px; border-radius: 20px; }

/* ===================================
   新闻中心 - 升级样式
   =================================== */
/* featured-card 已在"新闻中心"主样式块中定义，此处只补充图片色 */
.nac-img-6 { background: linear-gradient(140deg, #D0F5E8, #85DDB0); }
.nac-img-6::before { content: '🚗'; }
.nac-img-7 { background: linear-gradient(140deg, #FFF3CC, #FFD966); }
.nac-img-7::before { content: '🔧'; }
.nac-img-8 { background: linear-gradient(140deg, #EAD6FF, #C49DFF); }
.nac-img-8::before { content: '📦'; }

/* 分页 */
.news-pagination { display: flex; align-items: center; gap: 6px; margin-top: 36px; justify-content: center; }
.page-btn {
  min-width: 38px; height: 38px; padding: 0 12px;
  border: 1.5px solid #DDE3EF; border-radius: 9px; background: white;
  cursor: pointer; font-size: 14px; font-weight: 600; color: #4A5568;
  transition: all 0.18s;
}
.page-btn:hover { border-color: var(--primary); color: var(--primary); background: #F0F5FF; }
.page-btn.active { background: var(--primary); color: white; border-color: var(--primary); box-shadow: 0 3px 10px rgba(0,80,220,0.25); }
.page-btn.next-btn { padding: 0 18px; }

/* 搜索框 */
.ns-search-bar { display: flex; gap: 8px; }
.ns-search-btn { background: var(--primary); color: white; border: none; border-radius: 6px; padding: 0 14px; cursor: pointer; font-size: 16px; }

/* 侧边栏分类 */
.ns-cats { display: flex; flex-direction: column; gap: 8px; }
.ns-cat-item { display: flex; align-items: center; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--border); cursor: pointer; }
.ns-cat-item:last-child { border-bottom: none; }
.ns-cat-item:hover .nac-cat { opacity: 0.8; }
.ns-cat-count { font-size: 12px; color: var(--text-muted); background: var(--bg-gray); padding: 2px 8px; border-radius: 10px; }

/* CTA小卡片 */
.ns-cta-box { text-align: center; background: linear-gradient(135deg, #E8F0FF, #D0E4FF); }
.ns-cta-box .ns-widget { }
.ns-cta-icon { font-size: 36px; margin-bottom: 12px; }
.ns-cta-box h4 { color: var(--primary); }
.ns-cta-box p { font-size: 13px; color: var(--text-secondary); margin-bottom: 16px; line-height: 1.6; }

/* 文章详情页 */
.article-hero { padding: 100px 0 40px; }
.article-detail-layout { display: grid; grid-template-columns: 1fr 300px; gap: 48px; }
.article-detail-main { background: white; border-radius: var(--radius-lg); padding: 48px; border: 1px solid var(--border); }
.article-sidebar { }

/* 文章正文样式 */
.article-full-content { }
.article-full-content .article-header { margin-bottom: 32px; padding-bottom: 24px; border-bottom: 2px solid var(--border); }
.article-full-content .article-title { font-size: 28px; font-weight: 800; color: var(--text); line-height: 1.4; margin-bottom: 16px; }
.article-full-content .article-meta-bar { display: flex; align-items: center; flex-wrap: wrap; gap: 16px; font-size: 13px; color: var(--text-muted); }
.article-full-content .article-body h3 { font-size: 20px; font-weight: 700; margin: 32px 0 14px; color: var(--text); padding-left: 14px; border-left: 4px solid var(--primary); }
.article-full-content .article-body p { color: var(--text-secondary); line-height: 1.9; margin-bottom: 16px; font-size: 15px; }
.article-full-content .article-body strong { color: var(--text); }
.article-full-content .article-body .tip-box { background: var(--primary-light); border-left: 4px solid var(--primary); border-radius: 0 8px 8px 0; padding: 16px 20px; margin: 20px 0; }
.article-full-content .article-body .tip-box p { color: var(--primary-dark); margin: 0; font-weight: 500; font-size: 14px; }
.article-full-content .article-body table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14px; border-radius: var(--radius); overflow: hidden; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.article-full-content .article-body th { background: var(--bg-dark); color: white; padding: 12px 16px; text-align: left; font-size: 13px; }
.article-full-content .article-body td { padding: 10px 16px; border-bottom: 1px solid var(--border); }
.article-full-content .article-body tr:nth-child(even) td { background: var(--bg-gray); }
.article-full-content .article-cta { background: linear-gradient(135deg, var(--primary-light), #D0E4FF); border-radius: var(--radius); padding: 32px; text-align: center; margin-top: 40px; }
.article-full-content .article-cta h4 { font-size: 18px; color: var(--text); margin-bottom: 8px; }
.article-full-content .article-cta p { color: var(--text-secondary); font-size: 14px; margin-bottom: 20px; }

/* 文章导航 */
.article-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 40px 0 0; padding-top: 32px; border-top: 1px solid var(--border); }
.article-nav-prev, .article-nav-next { background: var(--bg-gray); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 20px; cursor: pointer; transition: var(--transition); }
.article-nav-prev:hover, .article-nav-next:hover { border-color: var(--primary); background: var(--primary-light); }
.article-nav-next { text-align: right; }
.article-nav-label { font-size: 11px; color: var(--text-muted); margin-bottom: 4px; }
.article-nav-title { font-size: 13px; color: var(--text); font-weight: 600; line-height: 1.4; }

/* 评论区 */
.article-comments { margin-top: 48px; padding-top: 40px; border-top: 1px solid var(--border); }
.article-comments h3 { font-size: 20px; font-weight: 700; margin-bottom: 24px; }
.comment-form { background: var(--bg-gray); border-radius: var(--radius); padding: 24px; }

/* ===================================
   悬浮按钮组
   =================================== */
.float-actions { position: fixed; right: 24px; bottom: 40px; z-index: 999; display: flex; flex-direction: column; gap: 10px; align-items: flex-end; }
.float-btn { display: flex; align-items: center; gap: 8px; background: white; border: 1px solid var(--border); border-radius: 28px; padding: 10px 16px 10px 12px; cursor: pointer; transition: var(--transition); box-shadow: 0 4px 16px rgba(0,0,0,0.1); font-size: 14px; font-weight: 600; color: var(--text); text-decoration: none; white-space: nowrap; }
.float-btn:hover { transform: translateX(-4px); box-shadow: 0 8px 24px rgba(0,102,255,0.2); border-color: var(--primary); color: var(--primary); }
.float-btn-icon { font-size: 18px; }
.float-phone { background: #E8FFF0; border-color: #00AA44; color: #00AA44; }
.float-phone:hover { background: #00AA44; color: white; }
.float-consult { background: var(--primary); color: white; border-color: var(--primary); }
.float-consult:hover { background: var(--primary-dark); color: white; transform: translateX(-4px); }
.float-top { padding: 10px 14px; border-radius: 50%; background: var(--bg-dark); color: white; border-color: transparent; font-size: 16px; font-weight: 700; opacity: 0; transition: opacity 0.3s, transform 0.3s; }
.float-top.visible { opacity: 1; }
.float-top:hover { background: var(--primary); color: white; transform: translateY(-4px) !important; }
.float-wechat { position: relative; background: #E8FFF5; border-color: #07C160; color: #07C160; }
.float-wechat:hover { background: #07C160; color: white; }
.float-wechat-popup { position: absolute; right: calc(100% + 12px); bottom: 0; background: white; border-radius: var(--radius); padding: 20px; box-shadow: 0 8px 32px rgba(0,0,0,0.15); border: 1px solid var(--border); text-align: center; display: none; min-width: 140px; }
.float-wechat:hover .float-wechat-popup { display: block; }
.fwp-qr { width: 80px; height: 80px; background: var(--bg-gray); margin: 0 auto 10px; border-radius: 6px; border: 1px dashed var(--border); display: flex; align-items: center; justify-content: center; font-size: 24px; }
.fwp-qr::before { content: '💬'; }
.float-wechat-popup p { font-size: 13px; color: var(--text); font-weight: 600; margin-bottom: 2px; }
.float-wechat-popup small { font-size: 11px; color: var(--text-muted); }

/* ===================================
   响应式补充
   =================================== */
@media (max-width: 1024px) {
  .csb-inner { flex-direction: column; text-align: center; }
  .csb-right { justify-content: center; }
  .products-stats-bar .psb-inner { gap: 0; }
  .article-detail-layout { grid-template-columns: 1fr; }
  .article-sidebar { display: none; }
}
@media (max-width: 768px) {
  .float-btn-text { display: none; }
  .float-btn { padding: 12px; border-radius: 50%; }
  .float-phone, .float-wechat { color: inherit; }
  .float-actions { gap: 8px; }
  .news-pagination { flex-wrap: wrap; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .article-detail-main { padding: 24px 20px; }
  .article-full-content .article-title { font-size: 22px; }
  .psb-item { padding: 0 20px; }
}
@media (max-width: 480px) {
  .products-grid { grid-template-columns: 1fr; }
  .float-actions { right: 12px; bottom: 24px; }
}

/* ===================================
   行业案例区块
   =================================== */
.cases-section {
  background: #F8FAFF;
  /* 2. 添加背景图片 (这里使用了一张免费的科技风图片，你可以替换链接) */
  background-image: linear-gradient(rgba(64, 80, 129, 0.6), rgba(15, 23, 42, 0.6)), url('images/pt-5.jpg');

  /* 3. 确保图片覆盖全屏且居中 */
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;

  /* 4. 可选：视差滚动效果，让背景固定，内容滑过，显得更高级 */
  background-attachment: fixed;
}
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 40px;
}
.case-card {
  background: #ededed;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.07);
  transition: transform 0.3s, box-shadow 0.3s;
}
.case-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(0,0,0,0.12); }
.case-img {
  height: 180px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.case-auto .case-img { background: linear-gradient(135deg, #E3F2FD, #1565C0); }
.case-optics .case-img { background: linear-gradient(135deg, #E0F2F1, #00695C); }
.case-medical .case-img { background: linear-gradient(135deg, #FCE4EC, #C62828); }
.case-icon-wrap {
  width: 72px; height: 72px;
  background: rgba(255,255,255,0.25);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(4px);
}
.case-icon { font-size: 36px; }
.case-industry-tag {
  position: absolute;
  top: 12px; left: 12px;
  background: rgba(255,255,255,0.9);
  color: #333;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
}
.case-content {padding: 24px;}
.case-content h3 { font-size: 15px; font-weight: 700; margin-bottom: 12px; color: #1A1A2E; line-height: 1.4; }
.case-challenge, .case-solution {
  font-size: 13px;
  color: #666;
  line-height: 1.7;
  margin-bottom: 8px;
}
.case-results {
  display: flex;
  gap: 0;
  margin-top: 16px;
  border-top: 1px solid #F0F0F0;
  padding-top: 16px;
}
.case-result-item {
  flex: 1;
  text-align: center;
  border-right: 1px solid #F0F0F0;
  padding: 0 8px;
}
.case-result-item:last-child { border-right: none; }
.crv {
  display: block;
  font-size: 18px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.3;
}
.case-result-item > span:last-child { font-size: 11px; color: #888; }

/* ===================================
   FAQ 常见问题
   =================================== */
.faq-section { background: #fff; }
.faq-inner { max-width: 880px; margin: 0 auto; }
.faq-header { text-align: center; margin-bottom: 40px; }
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  border: 1px solid #E8EDF5;
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.faq-item:hover { border-color: var(--primary); }
.faq-item.open { border-color: var(--primary); box-shadow: 0 4px 16px rgba(0,102,255,0.1); }
.faq-question {
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: #1A1A2E;
  gap: 16px;
  user-select: none;
  background: #fff;
  transition: background 0.2s;
}
.faq-item.open .faq-question { background: #F0F5FF; color: var(--primary); }
.faq-arrow {
  font-size: 12px;
  color: #999;
  flex-shrink: 0;
  transition: transform 0.3s;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-item.open .faq-answer { max-height: 300px; }
.faq-answer p {
  padding: 16px 24px 20px;
  font-size: 14px;
  color: #555;
  line-height: 1.8;
  background: #FAFBFF;
  border-top: 1px solid #EEF2FF;
}
.faq-cta {
  text-align: center;
  margin-top: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
.faq-cta p { color: #666; font-size: 15px; }

/* ===================================
   核心团队
   =================================== */
.team-section { background: linear-gradient(180deg, #F8FAFF, #fff); }
.team-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 40px;
}
.team-card {
  background: #fff;
  border-radius: 16px;
  padding: 28px;
  display: flex;
  gap: 24px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  border: 1px solid #EFF2F8;
  transition: transform 0.3s, box-shadow 0.3s;
}
.team-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.1); }
.team-avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  overflow: hidden;
}
.ta-1 { background: linear-gradient(135deg, #0066FF, #003399); }
.ta-2 { background: linear-gradient(135deg, #00B894, #006E50); }
.ta-3 { background: linear-gradient(135deg, #E17055, #9B3520); }
.ta-4 { background: linear-gradient(135deg, #6C5CE7, #4527A0); }
.team-info h3 { font-size: 17px; font-weight: 700; color: #1A1A2E; margin-bottom: 4px; }
.team-title {
  display: inline-block;
  font-size: 12px;
  background: #EEF2FF;
  color: var(--primary);
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 10px;
}
.team-info p { font-size: 13px; color: #666; line-height: 1.7; margin-bottom: 12px; }
.team-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.team-tags span {
  font-size: 11px;
  background: #F5F7FA;
  color: #555;
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid #E0E4EE;
}

/* ===================================
   工厂实力
   =================================== */
.factory-section { background: #1A1A2E; color: #fff; }
.factory-section .section-tag { background: rgba(255,255,255,0.15); color: rgba(255,255,255,0.9); }
.factory-section .section-title { color: #fff; }
.factory-strength {}
.fs-header { text-align: center; margin-bottom: 48px; }
.fs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.fs-item {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  padding: 28px 20px;
  text-align: center;
  transition: background 0.3s, transform 0.3s;
}
.fs-item:hover { background: rgba(255,255,255,0.1); transform: translateY(-4px); }
.fs-icon-box {
  width: 56px; height: 56px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px;
  margin: 0 auto 16px;
}
.fs-icon-1 { background: linear-gradient(135deg, #0066FF22, #0066FF55); }
.fs-icon-2 { background: linear-gradient(135deg, #00B89422, #00B89455); }
.fs-icon-3 { background: linear-gradient(135deg, #E1705522, #E1705555); }
.fs-icon-4 { background: linear-gradient(135deg, #6C5CE722, #6C5CE755); }
.fs-item h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.fs-item p { font-size: 13px; color: rgba(255,255,255,0.65); line-height: 1.6; }

/* ===================================
   服务承诺
   =================================== */
.service-promise-section { background: #F8FAFF; }
.promise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.promise-card {
  background: #fff;
  border-radius: 14px;
  padding: 28px 24px;
  text-align: center;
  border: 1px solid #E8EDF5;
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}
.promise-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0,102,255,0.1);
  border-color: var(--primary);
}
.promise-icon { font-size: 36px; margin-bottom: 14px; display: block; }
.promise-card h4 { font-size: 16px; font-weight: 700; color: #1A1A2E; margin-bottom: 10px; }
.promise-card p { font-size: 13px; color: #666; line-height: 1.7; }

/* ===================================
   联系页地图增强
   =================================== */
.map-content-wrap {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 28px;
  align-items: start;
}
.map-mock {
  position: relative;
  height: 380px;
  border-radius: 16px;
  overflow: hidden;
  background: #E8ECEF;
}
.map-bg {
  position: absolute;
  inset: 0;
  background: 
    repeating-linear-gradient(0deg, rgba(0,0,0,0.05) 0, rgba(0,0,0,0.05) 1px, transparent 1px, transparent 60px),
    repeating-linear-gradient(90deg, rgba(0,0,0,0.05) 0, rgba(0,0,0,0.05) 1px, transparent 1px, transparent 60px),
    linear-gradient(135deg, #BDC3C7, #ECF0F1);
}
.map-grid-lines {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(0deg, transparent, transparent 29px, rgba(0,0,0,0.08) 30px),
    repeating-linear-gradient(90deg, transparent, transparent 29px, rgba(0,0,0,0.08) 30px);
}
.map-marker {
  position: absolute;
  top: 45%; left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  z-index: 2;
}
.map-marker span { font-size: 36px; display: block; filter: drop-shadow(0 4px 8px rgba(0,0,0,0.3)); animation: mapBounce 2s ease-in-out infinite; }
@keyframes mapBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.map-popup {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  background: #fff;
  border-radius: 10px;
  padding: 10px 14px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.18);
  white-space: nowrap;
  font-size: 13px;
  font-weight: 500;
}
.map-popup strong { display: block; color: var(--primary); font-size: 14px; margin-bottom: 2px; }
.map-popup p { color: #555; font-size: 12px; margin: 0; }
.map-popup::after {
  content: '';
  position: absolute;
  top: 100%; left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: #fff;
}
.map-landmark {
  position: absolute;
  background: rgba(255,255,255,0.85);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 11px;
  color: #444;
  font-weight: 500;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.lm-1 { top: 20%; left: 15%; }
.lm-2 { bottom: 25%; right: 20%; }
.map-info-cards { display: flex; flex-direction: column; gap: 12px; }
.map-info-card {
  background: #fff;
  border-radius: 12px;
  padding: 16px 20px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  border: 1px solid #E8EDF5;
  transition: border-color 0.3s;
}
.map-info-card:hover { border-color: var(--primary); }
.mic-icon { font-size: 20px; flex-shrink: 0; margin-top: 2px; }
.map-info-card strong { display: block; font-size: 13px; font-weight: 700; color: #1A1A2E; margin-bottom: 3px; }
.map-info-card p { font-size: 13px; color: #666; margin: 0; }
.map-visit-btn { margin-top: 8px; }

/* ===================================
   响应式：新增组件
   =================================== */
@media (max-width: 1024px) {
  .cases-grid { grid-template-columns: 1fr; max-width: 600px; margin: 40px auto 0; }
  .team-grid { grid-template-columns: 1fr; }
  .fs-grid { grid-template-columns: repeat(2, 1fr); }
  .promise-grid { grid-template-columns: repeat(2, 1fr); }
  .map-content-wrap { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .cases-grid { grid-template-columns: 1fr; }
  .promise-grid { grid-template-columns: 1fr; }
  .fs-grid { grid-template-columns: repeat(2, 1fr); }
  .team-card { flex-direction: column; align-items: flex-start; }
  .faq-question { font-size: 14px; padding: 14px 18px; }
}
@media (max-width: 480px) {
  .fs-grid { grid-template-columns: 1fr; }
  .case-results { flex-direction: row; }
  .crv { font-size: 16px; }
}

/* ===================================
   全局 UI 细节优化
   =================================== */

/* 平滑滚动 */
html { scroll-behavior: smooth; }

/* 选中文字颜色 */
::selection { background: rgba(0,102,255,0.18); color: #0052CC; }

/* 导航栏增加渐变光泽 */
.navbar {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.navbar.scrolled {
  background: rgba(255,255,255,0.98);
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

/* Hero 粒子动画优化 */
@keyframes heroFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); opacity: 0.6; }
  50% { transform: translateY(-20px) rotate(180deg); opacity: 1; }
}
.hero-particles::before,
.hero-particles::after {
  animation-timing-function: ease-in-out;
}

/* 统计数字计数效果基础 */
.stat-num, .akn-num {
  font-variant-numeric: tabular-nums;
}

/* 产品卡片悬浮微光效果 */
.product-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(0,102,255,0.05));
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}
.product-card:hover::after { opacity: 1; }

/* 证书卡片优化 */
.cert-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 12px 32px rgba(0,102,255,0.12);
  border-color: var(--primary);
}

/* 时间线节点脉冲动画 */
.tl-dot.active {
  animation: dotPulse 2s ease-in-out infinite;
}
@keyframes dotPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0,102,255,0.4); }
  50% { box-shadow: 0 0 0 12px rgba(0,102,255,0); }
}

/* 新闻文章卡片featured标记 */
.featured-card { position: relative; }
.featured-card::before {
  content: '精选';
  position: absolute;
  top: 12px; right: 12px;
  background: linear-gradient(135deg, #FF6B35, #FF3E00);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  z-index: 1;
}

/* 按钮点击涟漪效果 */
.btn-primary, .btn-outline {
  position: relative;
  overflow: hidden;
}
.btn-primary::after, .btn-outline::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.3);
  border-radius: inherit;
  opacity: 0;
  transition: opacity 0.2s;
}
.btn-primary:active::after, .btn-outline:active::after { opacity: 1; }

/* 悬浮按钮增强 */
.float-btn { transition: transform 0.25s, box-shadow 0.25s, background 0.25s; }
.float-btn:hover { transform: translateX(-4px) scale(1.05); }
.float-top:hover { transform: translateY(-4px) scale(1.05) !important; }

/* 页脚优化 */
.footer {
  background: linear-gradient(180deg, #1A1A2E, #0F0F1E);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 20px;
  margin-top: 20px;
}

/* 加载时淡入动画 */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.page.active .hero-content {
  animation: fadeInUp 0.7s ease-out forwards;
}
.page.active .hero-badge {
  animation: fadeInUp 0.5s ease-out forwards;
}

/* 表格样式优化（文章内） */
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 13px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 0 0 1px #E0E0E0;
}
.article-body th {
  background: linear-gradient(135deg, #0066FF, #0052CC);
  color: #fff;
  padding: 10px 14px;
  font-weight: 600;
  text-align: left;
}
.article-body td {
  padding: 10px 14px;
  border-bottom: 1px solid #F0F0F0;
  color: #555;
}
.article-body tr:last-child td { border-bottom: none; }
.article-body tr:nth-child(even) td { background: #F9FAFB; }

/* tip-box 样式优化 */
.tip-box {
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
  border-left: 4px solid var(--primary);
  border-radius: 0 10px 10px 0;
  padding: 14px 18px;
  margin: 16px 0;
}
.tip-box p { margin: 0; font-size: 13.5px; color: #1E40AF; line-height: 1.7; }

/* ===================================
   图片相关样式
   =================================== */

/* Logo 图片 */
.logo-img {
  height: 40px;
  width: auto;
}

/* Footer Logo 图片 */
.footer-logo-img {
  height: 36px;
  width: auto;
}

/* Hero 背景图片 */
.hero-bg-img {
  position: absolute;
  inset: 0;
  width: auto;
  height: auto;
  object-fit: cover;
  z-index: 0;
}

/* 行业图标（纯 CSS emoji，无 img 标签，用 font-size 控制） */
/* 如果替换为真实 <img>，添加 width/height 到此处 */
/* .ind-icon { width: 40px; height: 40px; } */

/* 客户头像 - .tc-avatar 是纯 <div> 显示文字，保留 div 渐变样式不覆盖 */

/* 新闻预览封面容器 */
.np-img {
  height: 200px;
  overflow: hidden;
  background: var(--bg-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 80px;
}
.np-img img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* 案例图片（<img> 标签，填满父容器 .case-img） */
.case-img-real {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 团队头像（<img> 标签） */
.team-avatar-img {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

/* 工厂实力图片（<img> 标签） */
.fs-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 12px;
  margin: 0 auto 16px;
  display: block;
}

/* 二维码图片 */
.qr-placeholder-img {
  width: 120px;
  height: 120px;
  border-radius: 8px;
  object-fit: contain;
}

/* 地图背景 */
.map-bg-img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  border-radius: 16px;
}

/* 新闻侧边栏产品图标 */
.sidebar-products img {
  width: 24px;
  height: 24px;
  margin-right: 8px;
}

/* 企业文化图标（about.html 中 .culture-icon 内的 <img>） */
.culture-icon img {
  width: 56px;
  height: 56px;
  object-fit: contain;
  display: block;
  margin: 0 auto;
}

/* ===================================
   Hero 轮播样式
   =================================== */
.hero-carousel {
  position: absolute;
  inset: 0;
  overflow: hidden;
  width: 100%;
  height: 100%;
}

.hero-slides {
  position: relative;
  width: 100%;
  height: 100%;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1s ease-in-out;
  z-index: 0;
}

.hero-slide.active {
  opacity: 1;
}

/* 轮播指示器 */
.carousel-indicators {
  position: absolute;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 10;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  border: 2px solid rgba(255, 255, 255, 0.6);
  cursor: pointer;
  transition: all 0.3s;
  padding: 0;
}

.carousel-dot:hover {
  background: rgba(255, 255, 255, 0.7);
}

.carousel-dot.active {
  background: #fff;
  transform: scale(1.2);
}

/* 轮播箭头 */
.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 28px;
  cursor: pointer;
  z-index: 10;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.carousel-arrow:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-50%) scale(1.1);
}

.carousel-prev {
  left: 24px;
}

.carousel-next {
  right: 24px;
}

@media (max-width: 768px) {
  .carousel-arrow {
    width: 40px;
    height: 40px;
    font-size: 22px;
  }
  
  .carousel-prev {
    left: 12px;
  }
  
  .carousel-next {
    right: 12px;
  }
  
  .carousel-indicators {
    bottom: 80px;
  }
}

/*页面标题栏的背景图*/

.about-hero, .products-hero, .news-hero, .contact-hero{
  /* 设置背景图片路径 */
  background-image: url('images/tew.jpg');

  /* 让背景图覆盖整个容器 */
  background-size: cover;

  /* 让背景图在容器中居中显示 */
  background-position: center center;

  /* 防止背景图重复平铺 */
  background-repeat: no-repeat;

  /* 可选：设置一个固定高度，确保区域可见 */
  /* height: 400px; */
}

.footer-contact, .footer-links, .footer-brand{
  width: 400px;
}