/* ============ 基础重置 ============ */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #222;
  background: #fff;
  line-height: 1.6;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ============ 顶部导航 ============ */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 70px;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid rgba(0,0,0,0.06);
  transition: all .3s;
}
.nav {
  max-width: 1400px;
  margin: 0 auto;
  height: 100%;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
}
.logo img {
  height: 50px;
  width: auto;
  object-fit: contain;
}
.logo .brand-cn,
.logo .brand-en { display: none; }


.nav-menu { display: flex; gap: 40px; }
.nav-menu li a {
  font-size: 15px;
  color: #333;
  padding: 6px 0;
  position: relative;
  transition: color .3s;
}
.nav-menu li a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -4px;
  width: 0; height: 2px;
  background: #0072ce;
  transition: width .3s;
}
.nav-menu li a:hover,
.nav-menu li a.active { color: #0072ce; }
.nav-menu li a:hover::after,
.nav-menu li a.active::after { width: 100%; }

.lang-switch {
  display: none;
}


/* ============ 通用页面 banner(非首页用) ============ */
.page-banner {
  margin-top: 70px;
  height: 360px;
  background: linear-gradient(135deg, #0072ce 0%, #00a3e0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(255,255,255,0.15) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(255,255,255,0.1) 0%, transparent 40%);
}
.page-banner-content { position: relative; z-index: 2; }
.page-banner h1 {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: 4px;
}
.page-banner p {
  font-size: 17px;
  opacity: .9;
  letter-spacing: 2px;
}

/* 面包屑 */
.breadcrumb {
  max-width: 1400px;
  margin: 0 auto;
  padding: 18px 40px;
  font-size: 13px;
  color: #888;
  border-bottom: 1px solid #eee;
}
.breadcrumb a { color: #888; transition: color .3s; }
.breadcrumb a:hover { color: #0072ce; }
.breadcrumb .sep { margin: 0 8px; color: #ccc; }

/* ============ Hero 轮播(首页) ============ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
  margin-top: 70px;
}
.slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1s ease;
  display: flex;
  align-items: center;
}
.slide.active { opacity: 1; }
.slide::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,0.45) 0%, rgba(0,0,0,0.1) 60%);
}
.slide-content {
  position: relative;
  z-index: 2;
  color: #fff;
  padding-left: 8%;
  max-width: 600px;
  transform: translateY(30px);
  opacity: 0;
  transition: all 1s ease .3s;
}
.slide.active .slide-content {
  transform: translateY(0);
  opacity: 1;
}
.slide-content h2 {
  font-size: 56px;
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.2;
}
.slide-content p {
  font-size: 18px;
  margin-bottom: 30px;
  opacity: .9;
}
.btn-more {
  display: inline-block;
  padding: 12px 36px;
  border: 2px solid #fff;
  color: #fff;
  border-radius: 30px;
  font-size: 15px;
  transition: all .3s;
}
.btn-more:hover { background: #fff; color: #0072ce; }

.btn-primary {
  display: inline-block;
  padding: 12px 36px;
  background: #0072ce;
  color: #fff;
  border-radius: 30px;
  font-size: 15px;
  border: none;
  cursor: pointer;
  transition: all .3s;
}
.btn-primary:hover { background: #005ba8; transform: translateY(-2px); }

.indicators {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 5;
}
.indicators span {
  width: 40px;
  height: 3px;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: background .3s;
}
.indicators span.active { background: #fff; }

/* ============ 通用区段 ============ */
.section-title {
  font-size: 36px;
  font-weight: 600;
  margin-bottom: 12px;
  color: #1a1a1a;
}
.section-subtitle {
  color: #888;
  font-size: 15px;
  margin-bottom: 60px;
}
.section-pad {
  padding: 100px 40px;
  max-width: 1400px;
  margin: 0 auto;
}

/* 数据快览 */
.stats {
  padding: 100px 40px;
  background: linear-gradient(135deg, #f8fafc 0%, #eef4fb 100%);
  text-align: center;
}
.stats-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.stat-item { padding: 30px 20px; }
.stat-growth {
  color: #0072ce;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
}
.stat-num {
  font-size: 64px;
  font-weight: 700;
  color: #1a1a1a;
  line-height: 1;
}
.stat-num small {
  font-size: 22px;
  color: #666;
  font-weight: 400;
  margin-left: 6px;
}
.stat-label {
  margin-top: 14px;
  font-size: 16px;
  color: #555;
}

/* ============ 业务卡片网格 ============ */
.biz-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 50px;
}
.biz-card {
  position: relative;
  height: 360px;
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  background-size: cover;
  background-position: center;
  transition: transform .5s;
}
.biz-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0) 40%, rgba(0,0,0,0.75) 100%);
  transition: background .4s;
}
.biz-card:hover { transform: translateY(-8px); }
.biz-card:hover::before {
  background: linear-gradient(180deg, rgba(0,114,206,0.3) 0%, rgba(0,114,206,0.85) 100%);
}
.biz-info {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 30px;
  color: #fff;
  z-index: 2;
}
.biz-info h3 {
  font-size: 26px;
  font-weight: 600;
  margin-bottom: 10px;
}
.biz-info p {
  font-size: 14px;
  opacity: 0;
  transform: translateY(10px);
  transition: all .4s;
  max-height: 0;
  overflow: hidden;
}
.biz-card:hover .biz-info p {
  opacity: .95;
  transform: translateY(0);
  max-height: 100px;
  margin-bottom: 12px;
}
.biz-info .arrow {
  display: inline-block;
  font-size: 14px;
  opacity: 0;
  transform: translateX(-10px);
  transition: all .4s .1s;
}
.biz-card:hover .biz-info .arrow {
  opacity: 1;
  transform: translateX(0);
}
.biz-1 { background-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.biz-2 { background-image: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); }
.biz-3 { background-image: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%); }
.biz-4 { background-image: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%); }
.biz-5 { background-image: linear-gradient(135deg, #fa709a 0%, #fee140 100%); }
.biz-6 { background-image: linear-gradient(135deg, #30cfd0 0%, #330867 100%); }

/* ============ 商品网格(商城页) ============ */
.product-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}
.product-toolbar button {
  padding: 8px 22px;
  border: 1px solid #e0e0e0;
  background: #fff;
  border-radius: 24px;
  cursor: pointer;
  font-size: 14px;
  color: #555;
  transition: all .3s;
}
.product-toolbar button.active,
.product-toolbar button:hover {
  background: #0072ce;
  border-color: #0072ce;
  color: #fff;
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.product-card {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 12px;
  overflow: hidden;
  transition: all .3s;
  cursor: pointer;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(0,114,206,0.15);
  border-color: transparent;
}
.product-thumb {
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
  color: #fff;
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}
.product-info { padding: 20px; }
.product-info h4 {
  font-size: 16px;
  margin-bottom: 8px;
  color: #1a1a1a;
}
.product-info .desc {
  font-size: 13px;
  color: #888;
  margin-bottom: 14px;
  height: 38px;
  overflow: hidden;
}
.product-info .price {
  font-size: 22px;
  color: #ff5722;
  font-weight: 700;
}
.product-info .price small { font-size: 14px; font-weight: 400; }

/* ============ 服务支持(服务页) ============ */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}
.service-card {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 12px;
  padding: 36px 28px;
  text-align: center;
  transition: all .3s;
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(0,114,206,0.12);
  border-color: transparent;
}
.service-icon {
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, #0072ce, #00a3e0);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: #fff;
  margin: 0 auto 22px;
}
.service-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
  color: #1a1a1a;
}
.service-card p {
  font-size: 14px;
  color: #777;
  line-height: 1.7;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 50px;
  align-items: center;
  margin-top: 40px;
}
.contact-form {
  display: grid;
  gap: 16px;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color .3s;
}
.contact-form input:focus,
.contact-form textarea:focus { border-color: #0072ce; }
.contact-form textarea { min-height: 130px; resize: vertical; }

.contact-info-card { background: #f8fafc; border-radius: 12px; padding: 36px; }
.contact-info-card h3 { font-size: 22px; margin-bottom: 20px; color: #1a1a1a; }
.contact-info-card .info-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
  font-size: 14px;
  color: #555;
}
.contact-info-card .info-item .icon {
  width: 38px; height: 38px;
  background: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  color: #0072ce;
  flex-shrink: 0;
}
.contact-info-card .info-item strong { color: #1a1a1a; display: block; margin-bottom: 2px; font-weight: 500; }

/* ============ 招聘(加入我们) ============ */
.culture-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 40px;
}
.culture-item {
  text-align: center;
  padding: 30px 20px;
}
.culture-item .icon {
  width: 80px; height: 80px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0072ce, #00a3e0);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 32px;
}
.culture-item h4 { font-size: 18px; margin-bottom: 10px; color: #1a1a1a; }
.culture-item p { font-size: 13px; color: #888; }

.job-list { margin-top: 40px; }
.job-item {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 10px;
  padding: 24px 28px;
  margin-bottom: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all .3s;
}
.job-item:hover {
  border-color: #0072ce;
  box-shadow: 0 6px 18px rgba(0,114,206,0.1);
  transform: translateX(4px);
}
.job-meta h4 { font-size: 17px; color: #1a1a1a; margin-bottom: 6px; }
.job-meta .tags { display: flex; gap: 12px; font-size: 13px; color: #888; }
.job-meta .tags span::before { content: '·'; margin-right: 8px; color: #ccc; }
.job-meta .tags span:first-child::before { content: ''; margin-right: 0; }
.job-item .btn-apply {
  padding: 8px 22px;
  background: #f0f6fc;
  color: #0072ce;
  border-radius: 6px;
  font-size: 13px;
  transition: all .3s;
}
.job-item:hover .btn-apply { background: #0072ce; color: #fff; }

/* ============ Footer ============ */
.footer {
  background: #1a1a1a;
  color: #999;
  padding: 70px 40px 30px;
}
.footer-grid {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 50px;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 20px;
  font-weight: 500;
}
.footer-col ul li { margin-bottom: 12px; font-size: 14px; }
.footer-col ul li a { color: #999; transition: color .3s; }
.footer-col ul li a:hover { color: #fff; }
.copyright {
  max-width: 1400px;
  margin: 50px auto 0;
  padding-top: 30px;
  border-top: 1px solid #333;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 70px;
  flex-wrap: wrap;
  text-align: center;
  font-size: 15px;
  color: #ccc;
}
.copyright a {
  color: #ccc;
  transition: color .3s;
}
.copyright a:hover {
  color: #fff;
}

/* ============ 响应式 ============ */
@media (max-width: 968px) {
  .nav-menu { display: none; }
  .nav { padding: 0 20px; }
  .slide-content h2 { font-size: 36px; }
  .slide-content p { font-size: 15px; }
  .stats-grid { grid-template-columns: 1fr; }
  .biz-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .service-grid { grid-template-columns: 1fr; }
  .culture-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .copyright { gap: 12px; flex-direction: column; font-size: 13px; }
  .stat-num { font-size: 48px; }
  .page-banner h1 { font-size: 32px; }
  .logo .brand-en { display: none; }
  .job-item { flex-direction: column; align-items: flex-start; gap: 14px; }
}

/* ============ 视频介绍区(首页) ============ */
.video-section {
  padding: 100px 40px;
  background: linear-gradient(180deg, #fff 0%, #f8fafc 100%);
  text-align: center;
}
.video-wrapper {
  max-width: 1100px;
  margin: 50px auto 0;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 114, 206, 0.18);
  background: #000;
  position: relative;
}
.video-wrapper video {
  width: 100%;
  height: auto;
  display: block;
  outline: none;
}
.video-tip {
  margin-top: 18px;
  font-size: 13px;
  color: #999;
}

/* ============ 品牌力量(图文展示) ============ */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 50px;
}
.feature-card {
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 6px 20px rgba(0,0,0,0.06);
  transition: all .3s;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(0,114,206,0.15);
}
.feature-img {
  height: 220px;
  background-size: cover;
  background-position: center;
  background-color: #eef4fb;
}
.feature-text {
  padding: 24px 26px 28px;
}
.feature-text h4 {
  font-size: 19px;
  margin-bottom: 10px;
  color: #1a1a1a;
}
.feature-text p {
  font-size: 14px;
  color: #777;
  line-height: 1.7;
}
@media (max-width: 968px) {
  .video-section { padding: 60px 20px; }
  .feature-grid { grid-template-columns: 1fr; }
}