/* ============ 基础 ============ */
:root {
  --primary: #2394D8;
  --primary-dark: #1B7AB5;
  --primary-soft: rgba(35, 148, 216, .08);
  --title: #0F1C2A;
  --text: #4F6273;
  --muted: #8A9CAD;
  --bg: #F6F8FA;
  --white: #ffffff;
  --line: #E8EDF2;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(15, 28, 42, .06);
  --shadow-md: 0 12px 40px rgba(15, 28, 42, .10);
  --shadow-lg: 0 24px 60px rgba(15, 28, 42, .14);
  --transition: .3s cubic-bezier(.25, .8, .3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  color: var(--text); background: var(--white); font-size: 15px; line-height: 1.8;
}
a { text-decoration: none; color: inherit; transition: all .25s; }
ul, ol { list-style: none; }
img { border: 0; vertical-align: middle; max-width: 100%; }
.wrap { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }

/* ============ 顶部条 ============ */
.topbar { background: var(--title); color: rgba(255, 255, 255, .65); font-size: 13px; }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; height: 40px; }
.topbar-inner > p { letter-spacing: .5px; display: flex; align-items: center; gap: 8px; }
.topbar-inner > p i { color: var(--primary-light); font-size: 13px; }
.topbar-links { display: flex; align-items: center; gap: 18px; }
.topbar-links a { color: rgba(255, 255, 255, .65); display: flex; align-items: center; gap: 6px; }
.topbar-links a:hover { color: #fff; }
.topbar-links a i { font-size: 12px; color: rgba(255, 255, 255, .5); transition: color .25s; }
.topbar-links a:hover i { color: var(--primary-light); }
.topbar-links .split { width: 1px; height: 12px; background: rgba(255, 255, 255, .18); }

/* ============ 头部 ============ */
.header { background: var(--white); padding: 22px 0; }
.header-inner { display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.logo img { width: 300px; height: 80px; object-fit: contain; }
.header-right { display: flex; align-items: center; gap: 28px; }
.hotline { display: flex; align-items: center; gap: 14px; }
.hotline > i { width: 46px; height: 46px; border-radius: 50%; background: var(--primary-soft); color: var(--primary); font-size: 20px; display: flex; align-items: center; justify-content: center; }
.hotline div span { display: block; font-size: 12px; color: var(--muted); letter-spacing: 1px; }
.hotline div strong { font-size: 24px; color: var(--title); letter-spacing: 1px; font-family: Arial, sans-serif; }
.header-cta { display: none; }

/* ============ 导航 ============ */
.navbar { background: var(--white); border-top: 1px solid var(--line); position: sticky; top: 0; z-index: 900; box-shadow: 0 2px 12px rgba(15, 28, 42, .04); }
.navbar-inner { display: flex; align-items: center; justify-content: space-between; }
.nav-list { display: flex; }
.nav-item { position: relative; }
.nav-item > a {
  display: flex; align-items: center; gap: 6px; height: 60px; padding: 0 32px;
  color: var(--title); font-size: 15px; font-weight: 500; letter-spacing: 1px; transition: color var(--transition);
}
.nav-item > a::after {
  content: ""; position: absolute; left: 32px; right: 32px; bottom: 0; height: 2px;
  background: var(--primary); transform: scaleX(0); transition: transform var(--transition);
}
.nav-item:hover > a, .nav-item.active > a { color: var(--primary); }
.nav-item:hover > a::after, .nav-item.active > a::after { transform: scaleX(1); }
.nav-arrow.soncount-0 { display: none; }
.nav-toggle { display: none; width: 44px; height: 44px; align-items: center; justify-content: center; border-radius: 10px; background: var(--primary-soft); color: var(--title); font-size: 22px; cursor: pointer; transition: all var(--transition); }
.nav-toggle:hover { background: var(--primary); color: #fff; }

.sub-nav {
  position: absolute; top: 60px; left: 0; min-width: 200px; background: var(--white);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm); border: 1px solid var(--line); border-top: 2px solid var(--primary);
  opacity: 0; visibility: hidden; transform: translateY(10px); box-shadow: var(--shadow-md);
  transition: all var(--transition); z-index: 99; padding: 8px 0;
}
.nav-item:hover .sub-nav { opacity: 1; visibility: visible; transform: translateY(0); }
.sub-nav.soncount-0, .nav-item:hover .sub-nav.soncount-0 { display: none !important; }
.sub-nav li a { display: block; padding: 11px 24px; color: var(--text); font-size: 14px; border-bottom: 1px solid var(--line); transition: all .2s; }
.sub-nav li:last-child a { border-bottom: 0; }
.sub-nav li a:hover { color: var(--primary); background: var(--bg); padding-left: 28px; }

/* ============ 轮播图 ============ */
.hero { position: relative; background: var(--bg); }
.hero-swiper { width: 100%; aspect-ratio: 1920 / 640; overflow: hidden; }
.hero-slide { position: relative; height: 100%; overflow: hidden; }
.hero-slide img { width: 100%; height: 100%; object-fit: cover; }
.hero-mask { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(15, 28, 42, .78) 0%, rgba(15, 28, 42, .42) 55%, rgba(15, 28, 42, .05) 100%); }
.hero-content { position: absolute; left: 0; right: 0; top: 50%; transform: translateY(-50%); color: #fff; z-index: 3; }
.hero-label { display: inline-block; font-size: 12px; letter-spacing: 5px; color: rgba(255, 255, 255, .75); margin-bottom: 20px; padding: 6px 16px; border: 1px solid rgba(255, 255, 255, .25); border-radius: 20px; }
.hero-content h2 { font-size: 52px; font-weight: 700; line-height: 1.25; letter-spacing: 3px; margin-bottom: 18px; max-width: 720px; }
.hero-content p { font-size: 17px; color: rgba(255, 255, 255, .82); max-width: 560px; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 16px; }
.btn-main {
  display: inline-flex; align-items: center; gap: 8px;
  height: 50px; padding: 0 32px; background: var(--primary); color: #fff;
  font-size: 15px; font-weight: 600; letter-spacing: 1px; border-radius: 25px;
  transition: all var(--transition);
}
.btn-main:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(35, 148, 216, .4); }
.btn-sub {
  display: inline-flex; align-items: center;
  height: 50px; padding: 0 32px; border: 1px solid rgba(255, 255, 255, .6); color: #fff;
  font-size: 15px; font-weight: 500; letter-spacing: 1px; border-radius: 25px;
  background: rgba(255, 255, 255, .08); transition: all var(--transition);
}
.btn-sub:hover { background: rgba(255, 255, 255, .18); border-color: #fff; }

.hero-pagination { position: absolute; left: 50%; bottom: 34px; transform: translateX(-50%); z-index: 10; display: flex; gap: 10px; }
.hero-pagination .swiper-pagination-bullet { width: 10px; height: 10px; border-radius: 50%; background: rgba(255, 255, 255, .35); opacity: 1; margin: 0 !important; transition: all .3s; }
.hero-pagination .swiper-pagination-bullet-active { background: var(--primary); transform: scale(1.3); }
.hero-prev, .hero-next {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 10; cursor: pointer;
  width: 54px; height: 54px; border-radius: 50%; background: rgba(255, 255, 255, .9); color: var(--title); font-size: 20px;
  display: flex; align-items: center; justify-content: center; transition: all .3s; box-shadow: var(--shadow);
}
.hero-prev { left: 40px; }
.hero-next { right: 40px; }
.hero-prev:hover, .hero-next:hover { background: var(--primary); color: #fff; }

/* ============ 数据 ============ */
.stats { background: var(--white); border-bottom: 1px solid var(--line); }
.stats-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; padding: 70px 0; }
.stat { display: flex; align-items: center; justify-content: center; gap: 20px; padding: 10px 0; position: relative; }
.stat:not(:last-child)::after { content: ""; position: absolute; right: 0; top: 20%; bottom: 20%; width: 1px; background: var(--line); }
.stat-icon {
  width: 72px; height: 72px; display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0;
  border-radius: 18px; background: linear-gradient(135deg, #F8FAFC 0%, #EDF1F5 100%); border: 1px solid #E2E8F0;
  font-size: 36px; color: #64748B; transition: all var(--transition);
}
.stat-body { text-align: left; }
.stat strong { display: block; font-size: 42px; font-weight: 700; color: var(--title); font-family: Arial, sans-serif; line-height: 1; transition: color var(--transition); }
.stat strong em { color: var(--primary); font-size: 20px; margin-left: 2px; }
.stat span { display: block; font-size: 14px; color: var(--muted); margin-top: 6px; letter-spacing: 1px; }
.stat:hover .stat-icon { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-4px); box-shadow: 0 12px 28px rgba(35, 148, 216, .25); }
.stat:hover strong { color: var(--primary); }

/* ============ 通用标题 ============ */
.section-head { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 56px; gap: 24px; }
.section-title h2 { font-size: 36px; color: var(--title); font-weight: 700; letter-spacing: 2px; line-height: 1.3; }
.section-title p { color: var(--muted); font-size: 15px; letter-spacing: 1px; margin-top: 10px; }
.section-title.light h2 { color: #fff; }
.section-title.light p { color: rgba(255, 255, 255, .7); }
.section-more {
  display: inline-flex; align-items: center; gap: 8px; flex-shrink: 0;
  font-size: 14px; font-weight: 500; color: var(--primary); letter-spacing: 1px;
  transition: all .25s;
}
.section-more i { transition: transform .25s; }
.section-more:hover { color: var(--primary-dark); }
.section-more:hover i { transform: translateX(5px); }

/* ============ 产品展示 ============ */
.products { background: var(--bg); }
.products-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.product-card {
  display: block; background: var(--white); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); border: 1px solid var(--line); transition: all var(--transition);
}
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: rgba(35, 148, 216, .25); }
.product-img { position: relative; aspect-ratio: 1 / 1; overflow: hidden; background: var(--bg); }
.product-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.product-card:hover .product-img img { transform: scale(1.06); }
.product-body { padding: 22px; text-align: center; }
.product-body h3 { font-size: 16px; color: var(--title); font-weight: 600; margin-bottom: 10px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.product-body span { font-size: 13px; color: var(--muted); letter-spacing: 1px; }
.product-body span i { color: var(--primary); margin-left: 4px; transition: transform .25s; }
.product-card:hover .product-body span { color: var(--primary); }
.product-card:hover .product-body span i { transform: translateX(4px); }

/* ============ 关于我们 ============ */
.about { background: var(--white); }
.about-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.about-visual { position: relative; }
.about-img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); }
.about-img img { width: 100%; height: 480px; object-fit: cover; }
.about-float {
  position: absolute; right: -24px; bottom: 40px; background: var(--white); border-radius: var(--radius-sm);
  padding: 24px 30px; box-shadow: var(--shadow-md); border-left: 3px solid var(--primary);
}
.about-float strong { display: block; font-size: 42px; font-weight: 700; color: var(--primary); line-height: 1; font-family: Arial, sans-serif; }
.about-float strong em { font-size: 22px; }
.about-float span { font-size: 13px; color: var(--text); letter-spacing: 1px; }
.about-main .section-title { margin-bottom: 24px; }
.about-text { margin-bottom: 28px; }
.about-text p { color: var(--text); font-size: 15px; line-height: 2; text-align: justify; }
.about-merits { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-bottom: 34px; }
.merit { display: flex; align-items: flex-start; gap: 12px; }
.merit > i { font-size: 22px; color: var(--primary); margin-top: 2px; }
.merit h4 { font-size: 15px; color: var(--title); font-weight: 600; }
.merit p { font-size: 13px; color: var(--muted); }

/* ============ 解决方案 ============ */
.solutions { background: var(--bg); }
.solutions-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.solution-card {
  background: var(--white); border-radius: var(--radius); padding: 40px 28px;
  border: 1px solid var(--line); box-shadow: var(--shadow); transition: all var(--transition);
}
.solution-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); border-color: rgba(35, 148, 216, .25); }
.solution-icon {
  width: 64px; height: 64px; border-radius: 16px; background: var(--primary-soft); color: var(--primary);
  font-size: 26px; display: flex; align-items: center; justify-content: center; margin-bottom: 22px;
}
.solution-card h3 { font-size: 18px; color: var(--title); font-weight: 600; margin-bottom: 12px; }
.solution-card p { font-size: 14px; color: var(--text); line-height: 1.9; }

/* ============ 合作伙伴 ============ */
.partners { background: linear-gradient(135deg, #0B1929 0%, #132538 100%); }
.partners-track-wrap { max-width: 1320px; margin: 0 auto; overflow: hidden; padding: 0 24px; }
.partners-track { display: flex; width: max-content; animation: marquee 34s linear infinite; }
.partners-track:hover { animation-play-state: paused; }
.partner-item { flex: 0 0 auto; padding: 0 12px; }
.partner-item a {
  display: flex; align-items: center; justify-content: center; width: 150px; height: 150px;
  background: var(--white); border-radius: var(--radius-sm); padding: 18px; transition: all var(--transition);
}
.partner-item a:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.partner-item img { width: 100%; height: 100%; object-fit: contain; filter: grayscale(100%); transition: filter .3s; }
.partner-item a:hover img { filter: grayscale(0); }
@keyframes marquee { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* ============ 新闻资讯 ============ */
.news { background: var(--white); }
.news-layout { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 30px; width: 100%; }
.news-featured-col, .news-col { background: var(--bg); border-radius: var(--radius); padding: 28px; min-width: 0; overflow: hidden; }
.news-col-title { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.news-col-title h3 { font-size: 18px; color: var(--title); font-weight: 600; letter-spacing: 1px; }
.news-col-title a { font-size: 13px; color: var(--muted); }
.news-col-title a:hover { color: var(--primary); }

.news-featured { display: block; margin-bottom: 16px; }
.news-featured-img { border-radius: var(--radius-sm); overflow: hidden; aspect-ratio: 16 / 9; }
.news-featured-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.news-featured:hover .news-featured-img img { transform: scale(1.05); }
.news-featured-body { margin-top: 14px; }
.news-featured-body .news-date { font-size: 12px; color: var(--muted); }
.news-featured-body h4 { font-size: 16px; color: var(--title); font-weight: 600; margin-top: 6px; line-height: 1.5; }
.news-featured:hover h4 { color: var(--primary); }

.news-list li { border-bottom: 1px solid var(--line); }
.news-list li:last-child { border-bottom: 0; }
.news-list li a { display: flex; align-items: center; gap: 10px; padding: 12px 0; color: var(--text); font-size: 14px; transition: all .2s; overflow: hidden; }
.news-list li a:hover { color: var(--primary); padding-left: 4px; }
.news-list .news-title { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.news-list .news-date { color: var(--muted); font-size: 12px; font-family: Arial, sans-serif; flex-shrink: 0; }

.news-list.dated li a { gap: 14px; }
.date-box { flex-shrink: 0; width: 48px; text-align: center; background: var(--white); border-radius: 6px; padding: 6px 0; }
.date-box b { display: block; font-size: 18px; color: var(--primary); line-height: 1.1; font-family: Arial, sans-serif; }
.date-box i { display: block; font-size: 10px; color: var(--muted); }

.news-list.faq li a .q-mark { flex-shrink: 0; width: 26px; height: 26px; border-radius: 6px; background: var(--white); color: var(--primary); font-weight: 700; font-family: Arial, sans-serif; display: flex; align-items: center; justify-content: center; font-size: 14px; }
.news-list.faq li a > i.fa-angle-right { color: var(--muted); font-size: 12px; }

/* ============ 友情链接 ============ */
.links-section { background: var(--bg); padding: 30px 0; }
.links-bar { display: flex; align-items: center; gap: 24px; background: var(--white); border-radius: var(--radius); padding: 24px 30px; box-shadow: var(--shadow); }
.links-label { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.links-label i { font-size: 18px; color: var(--primary); }
.links-label h3 { font-size: 16px; color: var(--title); font-weight: 600; }
.links-list { display: flex; flex-wrap: wrap; gap: 10px; }
.links-list a { font-size: 13px; color: var(--text); background: var(--bg); padding: 7px 18px; border-radius: 4px; transition: all .2s; }
.links-list a:hover { background: var(--primary); color: #fff; }

/* ============ 底部 ============ */
.footer { background: #0B1929; color: rgba(255, 255, 255, .6); }
.footer-main { padding: 80px 0 50px; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1.3fr; gap: 50px; }
.footer-brand img { width: 220px; height: 58px; object-fit: contain; filter: brightness(0) invert(1); opacity: .95; margin-bottom: 20px; }
.footer-brand p { font-size: 13px; line-height: 1.9; margin-bottom: 22px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a { width: 40px; height: 40px; border: 1px solid rgba(255, 255, 255, .18); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 15px; color: rgba(255, 255, 255, .7); transition: all .3s; }
.footer-social a:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-3px); }
.footer-col h3 { color: #fff; font-size: 16px; font-weight: 600; letter-spacing: 1px; margin-bottom: 24px; }
.footer-nav li { margin-bottom: 12px; }
.footer-nav a { font-size: 14px; color: rgba(255, 255, 255, .6); }
.footer-nav a:hover { color: var(--primary-light); padding-left: 6px; }
.footer-contact li { display: flex; gap: 12px; margin-bottom: 14px; font-size: 13px; line-height: 1.7; }
.footer-contact i { color: var(--primary-light); font-size: 14px; margin-top: 4px; flex-shrink: 0; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); padding: 22px 0; }
.footer-bottom p { text-align: center; font-size: 13px; color: rgba(255, 255, 255, .45); }
.footer-bottom a { color: rgba(255, 255, 255, .45); }
.footer-bottom a:hover { color: var(--primary-light); }

/* ============ 返回顶部 / 移动端工具栏 ============ */
.back-top { position: fixed; right: 26px; bottom: 30px; z-index: 950; width: 46px; height: 46px; border-radius: 50%; background: var(--primary); color: #fff; font-size: 18px; display: flex; align-items: center; justify-content: center; cursor: pointer; opacity: 0; visibility: hidden; transform: translateY(16px); box-shadow: 0 8px 22px rgba(35, 148, 216, .4); transition: all var(--transition); }
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { background: var(--primary-dark); }

.mobile-toolbar { display: none; }

/* ============ 响应式 ============ */
@media (max-width: 1400px) { .wrap { max-width: 1200px; } }

@media (max-width: 1200px) {
  .nav-item > a { padding: 0 22px; }
  .nav-item > a::after { left: 22px; right: 22px; }
  .products-grid, .solutions-grid { gap: 18px; }
  .about-layout { gap: 50px; }
  .news-layout { gap: 20px; }
  .footer-grid { gap: 32px; }
  .hero-content h2 { font-size: 44px; }
}

@media (max-width: 992px) {
  :root { --header-height: 124px; }
  .section { padding: 70px 0; }
  .topbar-inner > p { display: none; }
  .header { position: sticky; top: 0; z-index: 900; box-shadow: 0 2px 12px rgba(15, 28, 42, .04); }
  .hotline { display: none; }
  .nav-toggle { display: inline-flex; }
  .navbar { position: relative; z-index: 899; border-top: 0; box-shadow: none; background: transparent; }
  .navbar-inner { flex-wrap: wrap; padding: 0; }
  .nav-list { display: none; flex-direction: column; position: fixed; top: var(--header-height); left: 0; right: 0; width: 100%; align-items: stretch; background: var(--white); border-top: 2px solid var(--primary); box-shadow: var(--shadow-md); max-height: calc(100vh - var(--header-height)); overflow-y: auto; -webkit-overflow-scrolling: touch; }
  .nav-list.open { display: flex; }
  .nav-item > a { height: 52px; padding: 0 18px; justify-content: space-between; border-bottom: 1px solid var(--line); }
  .nav-item > a::after { display: none; }
  .sub-nav { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border-top: 0; min-width: 0; display: none; background: var(--bg); padding: 0; }
  .nav-item.open .sub-nav { display: block; }
  .nav-item.open .sub-nav.soncount-0 { display: none !important; }
  .sub-nav li a { border-bottom: 1px solid var(--line); }
  .hero-content h2 { font-size: 36px; }
  .hero-prev { left: 16px; }
  .hero-next { right: 16px; }
  .stats-list { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .stat:not(:last-child)::after { display: none; }
  .products-grid, .solutions-grid { grid-template-columns: repeat(3, 1fr); }
  .about-layout { grid-template-columns: 1fr; gap: 50px; }
  .about-img img { height: 380px; }
  .news-layout { grid-template-columns: 1fr 1fr; }
  .news-featured-col { grid-column: 1 / -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .section-title h2 { font-size: 30px; }
  .case-page-list { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .pufeike-case-list { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}

@media (max-width: 768px) {
  :root { --header-height: 84px; }
  .topbar { display: none; }
  .header { padding: 14px 0; }
  .logo img { width: 210px; height: 56px; }
  .hotline > i { width: 40px; height: 40px; font-size: 18px; }
  .hotline div strong { font-size: 20px; }
  .hero-label { margin-bottom: 14px; }
  .hero-content h2 { font-size: 26px; letter-spacing: 1px; }
  .hero-content p { font-size: 14px; margin-bottom: 24px; }
  .hero-actions a { height: 42px; padding: 0 22px; font-size: 13px; }
  .hero-prev, .hero-next { width: 44px; height: 44px; font-size: 16px; }
  .stat-icon { width: 58px; height: 58px; border-radius: 14px; font-size: 28px; }
  .stat strong { font-size: 34px; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 14px; margin-bottom: 36px; }
  .section-title h2 { font-size: 26px; }
  .products-grid, .solutions-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .about-img img { height: 300px; }
  .about-float { right: 10px; bottom: 10px; padding: 16px 20px; }
  .about-float strong { font-size: 32px; }
  .about-merits { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .news-featured-col, .news-col { padding: 20px; }
  .news-layout { grid-template-columns: 1fr; gap: 20px; }
  .links-bar { flex-direction: column; align-items: flex-start; gap: 16px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-col:nth-child(4) { grid-column: 1 / -1; }
  .footer-main { padding: 50px 0 36px; }
  .back-top { display: none; }
  .nav-list { max-height: calc(100vh - var(--header-height) - 50px); }
  .page-banner { height: 320px; }
  .page-banner-inner h2 { font-size: 32px; }
  .page-banner-inner p { font-size: 14px; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .contact-card { padding: 28px 20px; }
  .contact-icon { width: 64px; height: 64px; font-size: 26px; }
  .news-page-list { grid-template-columns: 1fr; gap: 18px; }
  .news-page-item > a { grid-template-columns: 180px 1fr; }
  .news-page-body { padding: 18px 20px; }
  .news-page-body h3 { font-size: 16px; }
  .news-detail-title { font-size: 24px; }
  .news-detail-nav { flex-direction: column; gap: 10px; }
  .news-detail-next { text-align: left; }
  .product-page-list { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .product-detail { grid-template-columns: 1fr; gap: 28px; }
  .product-detail-gallery { max-width: 480px; margin: 0 auto; width: 100%; }
  .product-detail-title { font-size: 22px; }
  .case-page-list { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .case-page-body { padding: 18px 20px; }
  .case-page-body h3 { font-size: 16px; }
  .pufeike-case-list { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .pufeike-case-body { padding: 16px 18px; }
  .pufeike-case-body h3 { font-size: 15px; }
  .mobile-toolbar { display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 960; background: #0B1929; }
  .mobile-toolbar a { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 3px; padding: 9px 0 8px; color: rgba(255, 255, 255, .7); font-size: 11px; }
  .mobile-toolbar a i { font-size: 18px; }
  .mobile-toolbar a:active { color: var(--primary-light); }
  .footer-bottom { padding-bottom: 70px; }
}

@media (max-width: 480px) {
  :root { --header-height: 76px; }
  .logo img { width: 180px; height: 48px; }
  .hotline div span { font-size: 11px; }
  .hotline div strong { font-size: 17px; }
  .hero-content h2 { font-size: 22px; }
  .hero-actions { gap: 10px; }
  .stats-list { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .stat { justify-content: center; padding: 12px 0; gap: 10px; }
  .stat-icon { width: 48px; height: 48px; border-radius: 10px; font-size: 24px; }
  .stat strong { font-size: 26px; }
  .stat span { font-size: 13px; }
  .product-body { padding: 16px; }
  .product-body h3 { font-size: 14px; }
  .about-img img { height: 240px; }
  .section-title h2 { font-size: 23px; }
  .news-layout { gap: 16px; }
  .news-featured-col, .news-col { padding: 16px; }
  .news-col-title { margin-bottom: 14px; }
  .news-list li a { padding: 10px 0; }
  .footer-grid { gap: 16px; }
  .solution-card { padding: 28px 20px; }
  .page-banner { height: 220px; }
  .page-banner-inner h2 { font-size: 26px; margin-bottom: 8px; }
  .page-banner-inner p { font-size: 13px; }
  .breadcrumb-wrap > .wrap { height: 48px; font-size: 13px; }
  .contact-grid { grid-template-columns: 1fr; gap: 16px; }
  .contact-card { flex-direction: row; text-align: left; align-items: flex-start; padding: 22px 18px; gap: 16px; }
  .contact-icon { width: 52px; height: 52px; font-size: 22px; flex-shrink: 0; }
  .contact-body h3 { font-size: 16px; }
  .contact-body p { font-size: 14px; }
  .news-page-item > a { grid-template-columns: 1fr; }
  .news-page-body { padding: 16px 18px; }
  .news-page-body h3 { font-size: 15px; }
  .news-page-body p { font-size: 13px; }
  .pagination a, .pagination span { min-width: 34px; height: 34px; font-size: 13px; }
  .news-detail-title { font-size: 20px; margin-bottom: 14px; }
  .news-detail-meta { flex-direction: column; gap: 8px; margin-bottom: 24px; }
  .news-detail-body { font-size: 14px; }
  .news-detail-nav { margin-top: 32px; padding-top: 18px; font-size: 13px; }
  .product-page-list { grid-template-columns: 1fr; gap: 16px; }
  .product-page-item h3 { padding: 14px 12px; font-size: 14px; }
  .product-detail-title { font-size: 18px; margin-bottom: 12px; }
  .product-detail-desc { font-size: 14px; margin-bottom: 16px; }
  .product-detail-meta { font-size: 13px; }
  .product-detail-contact { padding: 14px 18px; }
  .product-detail-contact p { font-size: 14px; }
  .product-detail-tabs span { padding: 12px 20px; font-size: 15px; }
  .product-detail-body { font-size: 14px; }
  .case-page-list { grid-template-columns: 1fr; gap: 16px; }
  .case-page-body { padding: 16px 18px; }
  .case-page-body h3 { font-size: 15px; }
  .case-page-body p { font-size: 13px; }
  .pufeike-case-list { grid-template-columns: 1fr; gap: 16px; }
  .pufeike-case-body { padding: 14px 16px; }
  .pufeike-case-body h3 { font-size: 14px; }
}

/* ============ 内页通用 ============ */
.page-banner { position: relative; height: 400px; overflow: hidden; }
.page-banner-img { position: absolute; inset: 0; }
.page-banner-img img { width: 100%; height: 100%; object-fit: cover; }
.page-banner-inner { position: relative; z-index: 2; height: 100%; display: flex; flex-direction: column; justify-content: center; align-items: center; color: #fff; text-align: center; }
.page-banner-inner h2 { font-size: 42px; font-weight: 700; letter-spacing: 3px; margin-bottom: 12px; }
.page-banner-inner p { font-size: 16px; letter-spacing: 2px; color: rgba(255,255,255,.8); }
.page-banner::after { content: ""; position: absolute; inset: 0; background: rgba(15,28,42,.45); z-index: 1; }

.breadcrumb-wrap { background: var(--bg); border-bottom: 1px solid var(--line); }
.breadcrumb-wrap > .wrap { display: flex; align-items: center; height: 56px; font-size: 14px; color: var(--muted); }
.breadcrumb-wrap a { color: var(--text); }
.breadcrumb-wrap a:hover { color: var(--primary); }

.page-content { background: var(--white); }
.page-content .content-body { font-size: 15px; line-height: 2; color: var(--text); }
.page-content .content-body p { margin-bottom: 16px; }
.page-content .content-body img { max-width: 100%; border-radius: var(--radius-sm); }

.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.contact-card {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  gap: 18px; padding: 36px 24px; background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow); transition: all var(--transition);
}
.contact-card:hover { border-color: var(--primary); transform: translateY(-6px); box-shadow: var(--shadow-md); }
.contact-icon {
  width: 72px; height: 72px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  background: var(--primary-soft); color: var(--primary); font-size: 30px;
  transition: all var(--transition);
}
.contact-card:hover .contact-icon { background: var(--primary); color: #fff; }
.contact-body h3 { font-size: 18px; font-weight: 600; color: var(--title); margin-bottom: 10px; }
.contact-body p { font-size: 15px; color: var(--text); line-height: 1.6; word-break: break-all; }

.news-page-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-bottom: 40px; }
.news-page-item { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all var(--transition); }
.news-page-item > a { display: grid; grid-template-columns: 220px 1fr; gap: 0; }
.news-page-item:hover { border-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-4px); }
.news-page-thumb { aspect-ratio: 1 / 1; overflow: hidden; background: var(--bg); }
.news-page-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition); }
.news-page-item:hover .news-page-thumb img { transform: scale(1.05); }
.news-page-body { padding: 22px 24px; display: flex; flex-direction: column; }
.news-page-body h3 { font-size: 17px; font-weight: 600; color: var(--title); line-height: 1.5; margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-page-body p { font-size: 14px; color: var(--muted); line-height: 1.7; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; flex: 1; }
.news-page-date { font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 6px; }

.pagination { display: flex; justify-content: center; align-items: center; gap: 8px; flex-wrap: wrap; }
.pagination a, .pagination span {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 38px; height: 38px; padding: 0 12px;
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  font-size: 14px; color: var(--text); background: var(--white);
  transition: all var(--transition);
}
.pagination a:hover { border-color: var(--primary); color: var(--primary); }
.pagination .current { background: var(--primary); border-color: var(--primary); color: #fff; }

.news-detail { max-width: 900px; margin: 0 auto; }
.news-detail-title { font-size: 28px; font-weight: 700; color: var(--title); line-height: 1.4; margin-bottom: 18px; text-align: center; }
.news-detail-meta { display: flex; justify-content: center; align-items: center; gap: 24px; margin-bottom: 36px; font-size: 14px; color: var(--muted); }
.news-detail-meta i { margin-right: 5px; }
.news-detail-body { font-size: 15px; line-height: 2; color: var(--text); }
.news-detail-body p { margin-bottom: 16px; }
.news-detail-body img { max-width: 100%; border-radius: var(--radius-sm); }
.news-detail-nav { max-width: 900px; margin: 48px auto 0; padding-top: 24px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 14px; color: var(--muted); }
.news-detail-nav a { color: var(--text); }
.news-detail-nav a:hover { color: var(--primary); }
.news-detail-prev, .news-detail-next { flex: 1; min-width: 220px; }
.news-detail-next { text-align: right; }

.product-page-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-bottom: 40px; }
.product-page-item { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all var(--transition); }
.product-page-item > a { display: block; }
.product-page-item:hover { border-color: var(--primary); transform: translateY(-6px); box-shadow: var(--shadow-md); }
.product-page-thumb { aspect-ratio: 1 / 1; overflow: hidden; background: var(--bg); }
.product-page-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition); }
.product-page-item:hover .product-page-thumb img { transform: scale(1.05); }
.product-page-item h3 { padding: 18px 16px; font-size: 15px; font-weight: 600; color: var(--title); text-align: center; line-height: 1.5; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: color var(--transition); }
.product-page-item:hover h3 { color: var(--primary); }

/* ============ 案例列表 ============ */
.case-page-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 40px; }
.case-page-item { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all var(--transition); }
.case-page-item > a { display: block; }
.case-page-item:hover { border-color: var(--primary); transform: translateY(-6px); box-shadow: var(--shadow-md); }
.case-page-thumb { overflow: hidden; background: var(--bg); }
.case-page-thumb img { width: 100%; height: auto; display: block; transition: transform var(--transition); }
.case-page-item:hover .case-page-thumb img { transform: scale(1.05); }
.case-page-body { padding: 22px 24px; }
.case-page-body h3 { font-size: 17px; font-weight: 600; color: var(--title); line-height: 1.5; margin-bottom: 10px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: color var(--transition); }
.case-page-item:hover .case-page-body h3 { color: var(--primary); }
.case-page-body p { font-size: 14px; color: var(--muted); line-height: 1.7; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.case-page-date { font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 6px; }

/* ============ 普菲科介绍页 ============ */
.pufeike-swiper { aspect-ratio: 1920 / 660; }
.pufeike-about { background: var(--white); }
.pufeike-products { background: var(--bg); }
.pufeike-cases { background: var(--white); }

.pufeike-case-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pufeike-case-item { border-radius: var(--radius); overflow: hidden; transition: all var(--transition); }
.pufeike-case-item > a { display: block; }
.pufeike-case-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.pufeike-case-thumb { aspect-ratio: 4 / 3; overflow: hidden; background: var(--bg); }
.pufeike-case-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition); }
.pufeike-case-item:hover .pufeike-case-thumb img { transform: scale(1.05); }
.pufeike-case-body { padding: 18px 20px; background: var(--white); border: 1px solid var(--line); border-top: 0; }
.pufeike-case-body h3 { font-size: 16px; font-weight: 600; color: var(--title); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: color var(--transition); }
.pufeike-case-item:hover .pufeike-case-body h3 { color: var(--primary); }

.product-detail { display: grid; grid-template-columns: 480px 1fr; gap: 48px; margin-bottom: 50px; }
.product-detail-gallery { background: var(--bg); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.product-detail-mainpic { aspect-ratio: 1 / 1; }
.product-detail-mainpic img { width: 100%; height: 100%; object-fit: cover; }
.product-detail-info { display: flex; flex-direction: column; justify-content: center; }
.product-detail-title { font-size: 26px; font-weight: 700; color: var(--title); line-height: 1.4; margin-bottom: 18px; }
.product-detail-desc { font-size: 15px; color: var(--text); line-height: 1.8; margin-bottom: 24px; }
.product-detail-meta { display: flex; flex-direction: column; gap: 10px; margin-bottom: 28px; font-size: 14px; color: var(--muted); }
.product-detail-meta i { margin-right: 5px; }
.product-detail-contact { padding: 20px 24px; background: var(--primary-soft); border-radius: var(--radius); }
.product-detail-contact p { font-size: 16px; color: var(--primary); font-weight: 600; }
.product-detail-contact i { margin-right: 8px; }

.product-detail-content { margin-bottom: 40px; }
.product-detail-tabs { margin-bottom: 24px; border-bottom: 2px solid var(--line); }
.product-detail-tabs span { display: inline-block; padding: 14px 32px; font-size: 16px; font-weight: 600; color: var(--title); border-bottom: 2px solid var(--primary); margin-bottom: -2px; }
.product-detail-body { font-size: 15px; line-height: 2; color: var(--text); }
.product-detail-body p { margin-bottom: 16px; }
.product-detail-body img { max-width: 100%; border-radius: var(--radius-sm); }