/* 全局重置 + IE 兼容 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', Arial, sans-serif;
}

/* ==================== 页眉和导航包裹容器 ==================== */
.header-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
}

.header-wrapper:hover .yemei {
  background: #fff;
}

.header-wrapper:hover .top-nav {
  background: #d8232a;
}

.header-wrapper:hover .duoyuyan {
  color: #666;
}

.header-wrapper:hover .link-sep {
  color: #ccc;
}

.header-wrapper:hover .yemei-social img {
  opacity: 0.8;
}

/* ==================== 官网页眉样式（透明叠加在Banner上） ==================== */
.yemei {
  position: relative;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  background: transparent;
  border-bottom: none;
  z-index: 200;
  transition: background 0.3s ease;
}

/* 第八版修改：移除max-width限制，logo左对齐，导航区延伸，左边距改为158px */
.yemei-inner {
  width: 100%;
  max-width: none;
  margin: 0 auto;
  padding: 0 158px 0 158px;
  height: 130px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-sizing: border-box;
}

.yemei-logo {
  display: flex;
  align-items: center;
}

.yemei-logo img {
  width: auto;
  height: auto;
}

.yemei-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: center;
  height: 100%;
  padding: 0;
}

/* 第八版修改：顶部链接和社交图标分散开，字体放大 */
.yemei-top-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 20px;
  margin-bottom: 35px;
}

.duoyuyan {
  color: #fff;
  font-size: 14px; /* 第八版修改：从12px增大到14px */
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s;
  letter-spacing: 0.3px;
}

.yemei:hover .duoyuyan {
  color: #666;
}

.duoyuyan:hover {
  color: #d8232a !important;
}

.link-sep {
  color: rgba(255,255,255,0.6);
  font-size: 14px; /* 第八版修改：从12px增大到14px */
}

.yemei:hover .link-sep {
  color: #ccc;
}

/* 第八版修改：社交图标放大并增加间距 */
.yemei-social {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 20px; /* 第八版修改：从15px增大到20px */
}

.yemei-social a {
  display: flex;
  align-items: center;
}

.yemei-social img {
  width: 28px; /* 第八版修改：从24px增大到28px */
  height: 28px;
  opacity: 0.85;
  transition: opacity 0.2s;
}

.yemei:hover .yemei-social img {
  opacity: 0.8;
}

.yemei-social img:hover {
  opacity: 1;
}

/* 响应式 */
@media (max-width: 768px) {
  .yemei-inner {
    height: auto;
    padding: 10px 15px;
    flex-direction: column;
    gap: 10px;
  }

  .yemei-logo img {
    height: 50px;
  }

  .yemei-right {
    width: 100%;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .yemei-top-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .top-nav {
    padding-left: 15px;
    padding-right: 15px;
  }
}

img, video {
  display: block;
  width: 100%;
  border: 0;
}

body {
  line-height: 1.6;
  color: #333;
  text-align: center;
  margin: 0 auto;
  padding: 0;
}

a {
  text-decoration: none;
  color: inherit;
}

.banner,
.why-bgp,
.worldwide,
.contact {
  width: 100%;
  max-width: 1920px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
  text-align: left;
}

.news,
.services,
.tech {
  width: 1200px;
  max-width: 100%;
  margin: 0 auto;
  text-align: left;
}

/* ==================== 顶部导航（半透明红色背景） ==================== */
.top-nav {
  position: relative;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(216, 35, 42, 0.5); /* 第八版修改：略微加深背景 */
  padding: 0;
  width: 100%;
  max-width: none;
  margin: 0 auto;
  padding-left: 158px;  /* 左边距158px，与页眉区对齐 */
  padding-right: 158px; /* 右边距158px，对称 */
  text-align: left;
  height: 42px; /* 第八版修改：从36px增大到42px */
  z-index: 199;
  transition: background 0.3s ease;
  box-sizing: border-box;
}

/* 移除单独的top-nav:hover，统一由body控制 */

/* PC端隐藏汉堡菜单按钮 */
@media (min-width: 769px) {
  .nav-toggle {
    display: none;
  }
}

/* 基础PC端样式：菜单左对齐 */
.nav-main {
  list-style: none;
  display: flex;
  justify-content: flex-start; /* 左对齐 */
  gap: 0;
  padding: 0;
  margin: 0;
  height: 42px;
  line-height: 42px;
  transform: none;
  width: 100%;
  padding-left: 0;  /* 左边距0，菜单从导航栏最左侧开始 */
  padding-right: 158px; /* 右边距158px，对称 */
  box-sizing: border-box;
}

/* 菜单项间距统一缩小 */
.nav-item > a {
  display: block;
  color: #fff;
  font-family: Arial, sans-serif;
  font-size: 14px;
  font-weight: 600;
  line-height: 42px;
  padding: 0 40px;
  text-decoration: none;
  transition: background 0.3s ease;
  letter-spacing: 0.3px;
  white-space: nowrap; /* 防止文字换行 */
}

.nav-main::before,
.nav-main::after {
  content: none;
}

/* 菜单项 - 固定宽度 */
.nav-item {
  position: relative;
  flex: 0 0 auto;
  text-align: center;
}

.nav-item {
  position: relative;
}

.nav-item > a {
  display: block;
  color: #fff;
  font-family: Arial, sans-serif;
  font-size: 14px;
  font-weight: 600;
  line-height: 42px;
  padding: 0 40px;
  text-decoration: none;
  transition: background 0.3s ease;
  letter-spacing: 0.3px;
  white-space: nowrap; /* 防止文字换行 */
}

/* 导航第一项左padding改为0 */
.nav-item:first-child > a {
  padding-left: 0;
}

.nav-item > a:hover {
  background: rgba(255,255,255,0.2);
}

/* 二级菜单 - 弹出层 */
.has-submenu {
  position: relative;
}
.submenu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 700px;
  background: #fff8f9;
  box-shadow: 0 15px 40px rgba(0,0,0,0.2);
  border-radius: 0 0 12px 12px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s ease;
  z-index: 1000;
  overflow: hidden;
}
.has-submenu:hover .submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.submenu-inner {
  display: flex;
  padding: 0;
  min-width: 600px;
}
.submenu-links {
  flex: 1;
  min-width: 300px;
  max-width: 420px;
  padding: 20px 15px;
  display: flex;
  flex-direction: column;
}
.submenu-gallery {
  flex: 1;
  min-width: 280px;
  max-width: 380px;
  padding: 25px 25px 25px 15px;
  overflow: hidden;
}
.submenu-img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  transition: transform 0.5s ease;
  border-radius: 8px;
}
.has-submenu:hover .submenu-img {
  transform: scale(1.05);
}
.submenu-links a {
  display: block;
  color: #333;
  font-size: 14px;
  font-weight: 500;
  padding: 10px 25px;
  text-decoration: none;
  text-align: left; /* 确保左对齐 */
  transition: all 0.2s ease;
  border-left: 3px solid transparent;
  line-height: 1.4;
}
.submenu-links a:hover {
  background: linear-gradient(90deg, rgba(216,35,42,0.08), transparent);
  border-left-color: #d8232a;
  color: #d8232a;
  padding-left: 30px;
}

/* 右侧下拉菜单右对齐 */
.submenu-right .submenu {
  left: auto;
  right: 0;
}

/* ==================== 响应式导航 ==================== */

  /* 移动端导航样式 - 1024px以下切换汉堡菜单 */
@media (max-width: 1024px) {
  /* 移动端导航栏 - 透明背景覆盖在banner上 */
  .header-wrapper {
    position: relative;
    z-index: 998;
  }

  .top-nav {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    background: transparent;
    height: 60px;
    padding-left: 15px;
    padding-right: 50px;
    z-index: 1001;
  }

  .top-nav:hover {
    background: transparent;
  }

  /* 汉堡菜单 - 最高层级，确保始终可见 */
  .nav-toggle {
    display: flex !important;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    position: fixed !important;
    top: 18px !important;
    right: 15px !important;
    left: auto !important;
    bottom: auto !important;
    z-index: 99999 !important;
    visibility: visible !important;
    opacity: 1 !important;
    transform: none !important;
  }

  .nav-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background: #fff;
    border-radius: 2px;
    transition: all 0.3s ease;
  }

  /* 确保汉堡菜单在所有情况下都可见 */
  body.nav-open .nav-toggle {
    position: fixed !important;
    z-index: 99999 !important;
  }

  .top-nav:hover .nav-item > a {
    color: inherit;
  }

  /* 隐藏PC端菜单 */
  .top-nav > .nav-main {
    display: none;
  }

  /* 移动端菜单面板 */
  .nav-main {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    background: #fff;
    padding: 0;
    margin: 0;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
    z-index: 1000;
    gap: 0;
    display: flex;
    width: 100%; /* 移动端占满宽度 */
    height: auto; /* 自动高度 */
  }
  
  .nav-open .nav-main {
    display: flex;
    transform: translateX(0);
  }

  .nav-item {
    height: auto;
    border-bottom: 1px solid #eee;
  }
  
  .nav-item.has-submenu::before {
    display: none;
  }
  
  .nav-item > a {
    color: #333 !important;
    padding: 15px 20px;
    font-size: 15px;
    justify-content: space-between;
  }
  
  .nav-item > a::after {
    content: '+';
    font-size: 18px;
    font-weight: bold;
  }
  
  .nav-item.expanded > a::after {
    content: '-';
  }
  
  /* 移动端下拉菜单 - 在下方展开 */
  .submenu {
    position: static;
    width: 100%;
    min-width: auto;
    background: #f8f8f8;
    box-shadow: none;
    border-radius: 0;
    opacity: 1;
    visibility: visible;
    transform: none;
    display: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    left: auto;
    right: auto;
  }
  
  .nav-item.expanded .submenu {
    display: block;
    max-height: 500px;
  }
  
  .submenu-inner {
    flex-direction: column;
    min-width: auto;
  }
  
  .submenu-links {
    min-width: auto;
    max-width: 100%;
    padding: 10px 20px 20px;
  }
  
  .submenu-links a {
    padding: 10px 0;
    font-size: 14px;
    border-bottom: 1px solid #eee;
    color: #333;
  }
  
  .submenu-links a:hover {
    color: #d8232a;
    border-left: none;
    padding-left: 0;
  }
  
  .submenu-gallery {
    display: none;
  }
  
  /* yemei 移动端适配 - 隐藏或调整 */
  .yemei {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
    background: transparent;
    pointer-events: none; /* 让点击事件穿透到下层 */
  }
  
  .yemei-inner {
    height: 60px;
    padding: 5px 15px;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    background: transparent;
  }
  
  .yemei-logo img {
    height: 45px;
    pointer-events: auto;
  }
  
  .yemei-right {
    display: none; /* 移动端隐藏yemei的右侧内容 */
  }
  
  /* 隐藏hover效果 */
  .header-wrapper:hover .yemei,
  .header-wrapper:hover .top-nav,
  .header-wrapper:hover .duoyuyan,
  .header-wrapper:hover .link-sep,
  .header-wrapper:hover .yemei-social img {
    background: transparent;
    color: inherit;
    opacity: 1;
  }
}

/* 下拉箭头旋转 */
.has-submenu > a::after {
  transform: rotate(-90deg);
}

.has-submenu.submenu-open > a::after {
  transform: rotate(0deg);
}

/* ==================== BGP Logo 渐变色（用于按钮和进度条） ==================== */
:root {
  --bgp-gradient: linear-gradient(90deg, 
    rgb(29, 80, 162) 0%,    /* 深蓝 */
    rgb(7, 102, 166) 25%,   /* 蓝色 */
    rgb(2, 142, 143) 75%,   /* 青绿色 */
    rgb(0, 162, 115) 100%   /* 绿色 */
  );
}

/* Banner */
.banner-section {
  width: 100%;
  height: 100vh;
  overflow: hidden;
  position: relative;
}

.banner-slider {
  width: 100%;
  height: 100%;
  position: relative;
}

.banner-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.8s ease;
  z-index: 1;
}
.banner-slide.active {
  opacity: 1;
  z-index: 2;
}

.banner-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* FWI轮播使用静态图片 */
.banner-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.banner-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: transparent;
  z-index: 3;
}

/* 新增：左侧渐变阴影 */
.banner-left-shadow {
  position: absolute;
  top: 0;
  left: 0;
  width: 40%;
  height: 100%;
  background: linear-gradient(to right, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.55) 20%, rgba(0,0,0,0.4) 40%, rgba(0,0,0,0.2) 60%, transparent 80%);
  z-index: 4;
  pointer-events: none;
}

.banner-content {
  position: absolute;
  top: 50%;
  left: 158px;
  transform: translateY(-50%);
  color: #fff;
  z-index: 5;
  max-width: 700px;
  text-align: left;
}

/* Banner 内容入场动画 */
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-60px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.banner-slide.active .banner-title {
  animation: slideInLeft 0.8s ease-out forwards;
}

.banner-slide.active .banner-subtitle {
  opacity: 0;
  animation: fadeInUp 0.6s ease-out 0.3s forwards;
}

.banner-slide.active .banner-btn {
  opacity: 0;
  animation: fadeInUp 0.6s ease-out 0.5s forwards;
}

.banner-title {
  font-family: 'Inter', Arial, sans-serif;
  font-size: clamp(48px, 6vw, 100px); /* 小一号：最大值从110px改为100px */
  font-weight: 600;
  margin: 0 0 1.2rem;
  padding-bottom: 0;
  border-bottom: none;
  display: inline-block;
  text-shadow: 2px 4px 20px rgba(0,0,0,0.4);
  letter-spacing: -0.01em;
  text-transform: capitalize;
  line-height: 1.2;
}

.banner-subtitle {
  font-size: clamp(16px, 1.5vw, 18px);
  margin: 0 0 2.5rem;
  opacity: 0.95;
  line-height: 1.6;
  text-shadow: 1px 2px 10px rgba(0,0,0,0.3);
}

.banner-btn {
  display: inline-block;
  padding: 14px 36px;
  background: linear-gradient(90deg, rgb(29, 80, 162) 0%, rgb(7, 102, 166) 25%, rgb(2, 142, 143) 75%, rgb(0, 162, 115) 100%);
  color: #fff;
  border-radius: 30px;
  text-decoration: none;
  font-size: clamp(16px, 1.4vw, 22px); /* 第八版修改：1920屏约27px */
  font-weight: 500;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  letter-spacing: 0.5px;
}
.banner-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.4);
  filter: brightness(1.1);
}

/* 视频进度条（底部）- 已禁用
.banner-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: rgba(255,255,255,0.15);
  z-index: 10;
}

.banner-progress-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, rgb(29, 80, 162), rgb(0, 162, 115));
  transition: width 0.1s linear;
}
*/

/* 标签菜单 */
.banner-tab-menu {
  position: absolute;
  bottom: 130px; /* 第八版修改：从40px上移到130px，腾出空间给滚动箭头 */
  left: 50%; /* 第八版修改：改为50%实现居中 */
  transform: translateX(-50%); /* 第八版修改：水平居中 */
  width: 100%;
  max-width: 2800px; /* 第八版修改：从1920px增大到2800px，大屏时更美观 */
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  z-index: 10;
  background: transparent;
  padding: 0 158px;
  box-sizing: border-box;
  overflow-x: auto;
  scrollbar-width: none; /* Firefox隐藏滚动条 */
}

.banner-tab-menu::-webkit-scrollbar {
  display: none; /* Chrome/Safari隐藏滚动条 */
}

/* 第八版修改：底部滚动箭头（参照美孚网站） */
.scroll-down-arrow {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 15;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  animation: scrollBounce 2s ease-in-out infinite;
}

.scroll-down-arrow i {
  font-size: 32px;
  color: #fff;
  opacity: 0.9;
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.scroll-down-arrow:hover i {
  opacity: 1;
}

@keyframes scrollBounce {
  0%, 100% {
    transform: translateX(-50%) translateY(0);
    opacity: 0.9;
  }
  50% {
    transform: translateX(-50%) translateY(8px);
    opacity: 0.7;
  }
}

.tab-item {
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  position: relative;
  transition: color 0.3s;
  padding-top: 20px;
  padding-bottom: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  letter-spacing: 1px;
  text-transform: capitalize;
  flex: 1; /* 每个Tab项均分空间 */
  min-width: 0; /* 防止内容溢出 */
}

.tab-text {
  font-weight: 500;
}

/* 蓝绿带擦除风格进度条容器 */
.tab-progress {
  width: 100%; /* 进度条宽度占满Tab项 */
  height: 4px;
  background: rgba(255,255,255,0.2);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}

/* 进度条填充 - 蓝色到绿色渐变 */
.tab-progress-bar {
  position: absolute;
  top: 0;
  left: 0;
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, 
    rgb(29, 80, 162) 0%,
    rgb(7, 102, 166) 25%,
    rgb(2, 142, 143) 75%,
    rgb(0, 162, 115) 100%
  );
  border-radius: 2px;
  transition: width 0.1s linear;
}

/* 当前激活的标签 */
.tab-item.active {
  color: #fff;
}

/* 进度条填充 + 快速右滑擦除（展开6秒 + 擦除4秒 = 10秒） */
.tab-item.active .tab-progress-bar {
  animation: progressFill 10s linear forwards;
}

@keyframes progressFill {
  0% { 
    width: 0%;
    filter: none;
  }
  60% { 
    width: 100%;
    filter: none;
  }
  60.01% {
    width: 100%;
    transform: translateX(0);
  }
  100% { 
    width: 100%;
    transform: translateX(100%);
  }
}

/* 非激活标签进度条保持空白 */
.tab-item:not(.active) .tab-progress-bar {
  width: 0%;
}

/* 小屏时圆点指示器（替代进度条） */
.tab-dots {
  display: none;
  gap: 8px;
  align-items: center;
}

.tab-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  transition: all 0.3s ease;
}

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

/* 标签悬停效果 */
.tab-item:hover {
  color: #fff;
}

/* 小屏768px以下：隐藏进度条，显示圆点 */
@media (max-width: 768px) {
  .tab-progress {
    display: none;
  }
  .tab-dots {
    display: flex;
  }
  .banner-tab-menu {
    justify-content: center;
    gap: 20px;
  }
}

@media (min-width: 1360px) {
  /* 大屏时左边距158px */
  .banner-content {
    left: 158px;
  }
}

@media (max-width: 768px) {
  .banner-content {
    left: 5%;
    max-width: 90%;
  }
  .banner-title {
    font-size: 28px;
  }
  .banner-subtitle {
    font-size: 1rem;
    margin-bottom: 1.5rem;
  }
  .banner-btn {
    padding: 12px 28px;
    font-size: 0.9rem;
  }
  .banner-tab-menu {
    gap: 40px;
    padding: 0 20px;
    justify-content: center;
  }
  .tab-text {
    font-size: 0.8rem;
  }
  .tab-progress {
    min-width: 40px;
  }
  /* 移动端隐藏左侧阴影或调小 */
  .banner-left-shadow {
    width: 30%;
    background: linear-gradient(to right, rgba(0,0,0,0.4) 0%, rgba(0,0,0,0.2) 50%, transparent 100%);
  }
}

/* Why BGP */
.why_bgp_section {
  position: relative;
  width: 100%;
  min-height: 900px;
  overflow: hidden;
}

.wb_bg_wrap {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  /* 背景固定，文字滚动效果 */
  background-image: url('../images/whybgp.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}
.wb_overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.3);
  z-index: 2;
}

.wb_container {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  width: 1200px;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  text-align: center;
}

.wb_animate_line,
.wb_animate_item {

  opacity: 0;
  transform: translateY(30px);
  transition: all 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
.wb_animate_line.wb_show,
.wb_animate_item.wb_show {
  opacity: 1;
  transform: translateY(0);
}

.wb_container h2 {
  font-size: 130px;
  font-weight: bold;
  margin-bottom: 32px;
  padding-top: 30px;
  color: #ffffff;
}
.wb_desc {
  font-size: 18px;
  line-height: 1.7;
  max-width: 900px;
  margin-bottom: 60px;
  color: #ffffff;
}
.wb_stats {
  display: flex;
  justify-content: space-between; /* 统计项左右分散对齐 */
  gap: 60px;
  width: 100%;
}
.wb_num {
  font-size: 60px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #ffffff;
}
.counter {
  color: #ffffff;
}
.wb_label {
  font-size: 20px;
  opacity: 0.9;
  color: #ffffff;
}

/* Why BGP 响应式样式 */
@media (max-width: 768px) {
  .why_bgp_section {
    min-height: auto;
    display: block;
    position: relative;
  }
  
  .wb_bg_wrap {
    background-attachment: scroll;
    min-height: auto;
    height: auto;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
  }
  
  .wb_overlay {
    min-height: auto;
    height: auto;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
  }
  
  .wb_container {
    position: relative;
    width: 100%;
    padding: 60px 20px;
    transform: none;
    left: 0;
    min-height: auto;
    z-index: 3;
  }
  
  .wb_container h2 {
    font-size: 36px;
    margin-bottom: 20px;
    padding-top: 0;
  }
  
  .wb_desc {
    font-size: 14px;
    max-width: 100%;
    margin-bottom: 40px;
    padding: 0 10px;
  }
  
  .wb_stats {
    display: flex;
    flex-direction: column;
    gap: 30px;
    width: 100%;
    justify-content: center;
    align-items: center;
  }
  
  .wb_stat {
    text-align: center;
  }
  
  .wb_num {
    font-size: 40px;
  }
  
  .wb_label {
    font-size: 16px;
  }
}

/* ==================== BGP NEWS 样式已经全部加进来了 ==================== */
.news-wrap {
  width: 100%;
  background-color: #fcf9f4;
  padding: 50px 0;
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s ease;
}
.news-wrap.active {
  opacity: 1;
  transform: translateY(0);
}

.news-container {
  width: 100%;
  margin: 0 auto;
  max-width: 1920px;
  padding: 0 158px;
}

.news-title {
  font-size: 50px;
  font-weight: bold;
  text-align: center;
  color: #111;
  margin-bottom: 40px;
}

.news-title::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, rgb(29, 80, 162) 0%, rgb(7, 102, 166) 25%, rgb(2, 142, 143) 75%, rgb(0, 162, 115) 100%);
  margin: 20px auto 0;
  border-radius: 2px;
}

.main-news {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 30px;
  padding-bottom: 30px;
}
.main-news-text {
  width: 464px;
}
.main-news-text h3 {
  font-size: 36px;
  font-weight: normal;
  color: #111;
  line-height: 1.3;
  margin-bottom: 12px;
  text-align: left;
}
.main-news-text .date {
  font-size: 13px;
  color: #666;
  margin-bottom: 16px;
  text-align: left;
}
.main-news-text .summary {
  font-size: 15px;
  color: #333;
  line-height: 2.0;
  margin-bottom: 24px;
  text-align: left;
}

.read-more-btn {
  display: inline-block;
  padding: 10px 22px;
  border: 2px solid #0071bc;
  border-radius: 20px;
  color: #0071bc;
  text-decoration: none;
  font-size: 14px;
  transition: all 0.3s;
}
.read-more-btn:hover {
  background: var(--bgp-gradient);
  border-color: var(--bgp-gradient);
  color: #fff;
}

.main-news-img {
  width: 696px;
  height: 426px;
  border-radius: 8px;
  object-fit: cover;
}

.news-list {
  display: flex;
  justify-content: flex-start;
  gap: 44px;
  margin-bottom: 20px;
  width: 100%;
}

/* 三张卡片时 */
.news-list.three-cards .news-card {
  flex: 0 0 calc((100% - 88px) / 3);
  max-width: calc((100% - 88px) / 3);
  aspect-ratio: 1 / 1.2;
  height: auto;
}

.news-card {
  position: relative;
  flex: 1;
  height: 660px;
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.4s ease;
}
.news-card:hover {
  transform: scale(1.03);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  z-index: 10;
}

.news-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: all 0.4s ease;
}
.news-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.15) 50%, transparent 100%);
  z-index: 1;
  transition: all 0.4s ease;
}

/* 悬停时渐变加深 */
.news-card:hover::before {
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.4) 50%, transparent 100%);
}

.news-card-content {
  position: absolute;
  bottom: 16px;
  left: 20px;
  right: 20px;
  z-index: 2;
  color: #fff;
  text-align: left;
  transition: all 0.4s ease;
}

/* 悬停时内容上移 */
.news-card:hover .news-card-content {
  bottom: 132px;
}

.news-card-title {
  font-size: 26px;
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 20px;
  transition: all 0.4s ease;
}

/* 悬停时标题变大 */
.news-card:hover .news-card-title {
  font-size: 30px;
  margin-bottom: 10px;
}

.news-card-date {
  font-size: 24px;
  font-weight: 400;
  transition: all 0.4s ease;
}

.news-card:hover .news-card-date {
  font-size: 14px;
  opacity: 0.8;
}

/* 详情区域 */
.news-card-detail {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px;
  color: #fff;
  z-index: 3;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.4s ease;
  text-align: left;
}

.news-card:hover .news-card-detail {
  opacity: 1;
  transform: translateY(0);
}

.news-card-detail p {
  font-size: 15px;
  line-height: 1.6;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}
.news-card-arrow {
  position: absolute;
  bottom: 24px;
  right: 20px;
  z-index: 4;
  width: 48px;
  height: 48px;
  border: 2px solid #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 24px;
  text-decoration: none;
  transition: all 0.4s ease;
}

/* 悬停时箭头上移 */
.news-card:hover .news-card-arrow {
  bottom: 140px;
}

/* 箭头滚动动画 */
.news-card-arrow:hover {
  background: rgba(255,255,255,0.2);
}

.news-card-arrow:hover::before {
  animation: arrowRoll 0.5s ease forwards;
}

@keyframes arrowRoll {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(90deg);
  }
}


.all-news-link {
  display: block;
  text-align: center;
  font-size: 16px;
  color: rgb(29, 80, 162);
  text-decoration: none;
  font-weight: 600;
  padding: 16px 32px;
  border: 2px solid rgb(29, 80, 162);
  border-radius: 30px;
  transition: all 0.3s;
  width: 200px;
  margin: 40px auto 0;
}
.all-news-link:hover {
  background: linear-gradient(90deg, rgb(29, 80, 162) 0%, rgb(7, 102, 166) 25%, rgb(2, 142, 143) 75%, rgb(0, 162, 115) 100%);
  border-color: transparent;
  color: #fff;
}





/* ==================== BGP SERVICES & PRODUCTS ==================== */
.services-wrap {
  width: 100%;
  background-color: #fcf9f4;
  padding: 60px 0 95px;
  /* 先去掉动画效果，直接显示 */
  opacity: 1;
  transform: translateY(0);
}

/* 如果要动画效果，用这个 */
/*
.services-wrap {
  width: 100%;
  background-color: #fcf9f4;
  padding: 60px 0;
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s ease;
}
.services-wrap.active {
  opacity: 1;
  transform: translateY(0);
}
*/

.services-container {
  width: 100%;
  margin: 0 auto;
  max-width: 1920px;
  padding: 0 158px;
}

.services-title {
  font-size: 50px;
  font-weight: bold;
  text-align: center;
  color: #111;
  margin-top: 20px;
  margin-bottom: 60px;
}

.services-title::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, rgb(29, 80, 162) 0%, rgb(7, 102, 166) 25%, rgb(2, 142, 143) 75%, rgb(0, 162, 115) 100%);
  margin: 20px auto 0;
  border-radius: 2px;
}

.services-desc {
  font-size: 22px;
  font-weight: normal;
  text-align: center;
  color: #444;
  margin-top: -30px;
  line-height: 1.6;
}

.services-desc-block {
  margin-bottom: 50px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 44px;
  justify-content: center;
  width: 100%;
}


.service-card {
  display: block;
  position: relative;
  width: 100%;
  height: 280px;
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  text-decoration: none;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.18);
}

.service-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.service-card:hover .service-img {
  transform: scale(1.08);
}

/* 文字标签叠加在图片底部 */
.service-label {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 40px 20px 15px;
   background: linear-gradient(to top, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0.4) 50%, transparent 100%);
  text-align: center;
  z-index: 2;
}

.service-name {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  margin: 0;
}

/* 响应式适配 */
@media (max-width: 1280px) {
  .services-container {
    width: 100%;
    min-width: auto;
    padding: 0 20px;
  }
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;  /* 修复：调大间距 */
  }
  .service-card {
    width: 100%;
  }
}

@media (max-width: 768px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;  /* 调大间距 */
  }
  .services-title {
    font-size: 26px;
    margin-top: 40px;
    margin-bottom: 40px;
  }
  .service-name {
    font-size: 15px;
  }
}

@media (max-width: 480px) {
  .services-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}











<!-- ==================== BGP Worldwide CSS样式部分 ==================== -->


.bgp-worldwide {
    position: relative; /* 关键：让背景图相对于此容器定位 */
    width: 100%;
    min-height: 600px;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow: hidden;
    /* 添加渐变底部过渡到白色 */
    background: linear-gradient(to bottom, transparent 70%, #f5f5f5 100%);
}

/* 背景图 */
.bgp-bg {
    position: absolute;
   
    width: 100%;
    height: 100%;
    background-image: url('../images/bgpworldwide.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 1;
}

/* 内容容器 */
.bgp-content {
    position: relative;
    z-index: 2;
    width: 100%;
    padding: 40px 80px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

/* 标题 - 居中 */
.bgp-title {
    color: #fff;
    font-size: 50px;
    font-weight: blod;
    text-transform: capitalize;
    letter-spacing: 2px;
    margin-bottom: 50px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    width: 100%;
    text-align: center;
}

/* 统计数据容器 */
.bgp-stats {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

/* 单个统计项 - 居中对齐 */
.bgp-stat {
    text-align: center;
}

/* 数字 */
.bgp-num {
    display: block;
    font-size: 48px;
    font-weight: bold;
    color: #fff;
    line-height: 1;
    margin-bottom: 5px;
}

/* 说明文字 */
.bgp-text {
    display: block;
    font-size: 20px;
    color: #fff;
    letter-spacing: 0px;
    text-transform: lowercase;
}

/* 响应式 - 平板 */
@media (max-width: 1024px) {
    .bgp-worldwide {
        min-height: 500px;
    }
    .bgp-content {
        padding: 30px 60px;
    }
    .bgp-title {
        font-size: 42px;
        letter-spacing: 6px;
        margin-bottom: 40px;
    }
    .bgp-stats {
        gap: 25px;
    }
    .bgp-num {
        font-size: 40px;
    }
}

/* 响应式 - 手机 */
@media (max-width: 768px) {
    .bgp-worldwide {
        min-height: 400px;
    }
    .bgp-content {
        padding: 25px 40px;
    }
    .bgp-title {
        font-size: 32px;
        letter-spacing: 4px;
        margin-bottom: 30px;
    }
    .bgp-stats {
        gap: 20px;
    }
    .bgp-num {
        font-size: 36px;
    }
    .bgp-text {
        font-size: 12px;
    }
}


/* ==================== BGP Worldwide 样式 结束 ==================== */


/* ==================== TECHNOLOGY & INNOVATION 样式 ==================== */


/* 大标题 */
.tech-section-title {
    background: #fff;
    padding:60px 0 50px;
    text-align: center;
    position: relative;
    z-index: 100;
}

.tech-section-title h1 {
    font-size: 50px;
    font-weight: bold;
    margin: 0;
    color: #111;
}

.tech-section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, rgb(29, 80, 162) 0%, rgb(7, 102, 166) 25%, rgb(2, 142, 143) 75%, rgb(0, 162, 115) 100%);
    margin: 20px auto 0;
    border-radius: 2px;
}

.tech-section-desc {
    text-align: center;
    padding-bottom: 30px;
    background: #fff;
}

/* 交互式三栏轮播 */
.tech-carousel-section {
    background: linear-gradient(180deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 40px 0;
    max-height: none;
    overflow: visible;
}

.tech-carousel-container {
    width: 100%;
    max-width: 1920px;
    margin: 0 auto;
    display: flex;
    align-items: stretch;
    padding: 0 158px;
    box-sizing: border-box;
    height: 380px;
    transition: height 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* 激活状态 - 容器高度自适应内容 */
.tech-carousel-container.active {
    height: auto;
    min-height: 450px;
}

/* 三张卡片容器 - 初始横向排列 */
.tech-cards-wrapper {
    display: flex;
    flex-direction: row;
    gap: 44px;
    flex: 0 0 100%;
    min-width: 0;
    transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    height: 380px;
}

/* 激活状态 - 左侧占28%，卡片变为纵向排列 */
.tech-carousel-container.active .tech-cards-wrapper {
    flex: 0 0 28% !important;
    display: flex !important;
    flex-direction: column;
    height: auto;
    min-height: 450px;
    max-height: none;
}

/* 确保激活时卡片自适应高度，最小140px */
.tech-carousel-container.active .tech-carousel-card {
    flex: 1 !important;
    width: 100%;
    min-height: 140px;
    max-height: none;
}

/* 单个卡片 - 横向排列时的样式，固定高度，三等分 */
.tech-carousel-card {
    flex: 0 0 calc((100% - 60px) / 3);
    min-width: 0;
    height: 100%;
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    cursor: pointer;
    transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.tech-carousel-card .tech-card-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transition: transform 0.5s ease;
    z-index: 0;
}

.tech-carousel-card:hover .tech-card-image {
    transform: scale(1.1);
}

/* 卡片渐变遮罩 */
.tech-carousel-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.2) 60%, rgba(0,0,0,0.1) 100%);
    z-index: 1;
    transition: all 0.4s ease;
}
.tech-carousel-card:hover::before {
    background: linear-gradient(to top, rgba(29,80,162,0.8) 0%, rgba(0,162,115,0.5) 100%);
}

/* 卡片标题 - 横向排列时居中，文字换行显示 */
.tech-carousel-card .tech-card-title {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    font-size: 22px;
    font-weight: bold;
    z-index: 2;
    text-align: center;
    width: 85%;
    transition: all 0.3s ease;
    line-height: 1.4;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

/* 激活状态 - 左侧显示时标题往下移，避免被加号挡住 */
.tech-carousel-container.active .tech-carousel-card .tech-card-title {
    top: 65%;
}

/* 卡片加号图标 */
.tech-carousel-card .tech-card-icon {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    border: 2px solid #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 24px;
    z-index: 2;
    transition: all 0.3s ease;
    background: rgba(0,0,0,0.3);
}

.tech-carousel-card:hover .tech-card-icon {
    background: #fff;
    color: #1d50a2;
    transform: rotate(90deg);
}

/* 悬停时卡片放大 */
.tech-carousel-card:hover {
    cursor: pointer;
    transform: scale(1.03);
}

/* 激活状态 - 卡片变大 */
.tech-carousel-card.active {
    flex: 1.3;
}

.tech-carousel-card.active .tech-card-title {
    font-size: 22px;
}

/* 激活状态 - 卡片变大 */
.tech-detail-panel {
    flex: 0 0 0%;
    overflow: hidden;
    background: #fff;
    border-radius: 20px;
    margin-left: 30px;
    transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 0 8px 40px rgba(0,0,0,0.1);
    opacity: 0;
    padding: 0;
    height: 100%;
}

/* 激活状态 - 右侧详情面板占72% */
.tech-carousel-container.active .tech-detail-panel {
    flex: 0 0 72% !important;
    opacity: 1;
    padding: 35px;
}

/* 详情区头部 - See All */
.tech-detail-header {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 20px;
    opacity: 0;
    transition: opacity 0.3s ease 0.2s;
}

.tech-detail-panel.show .tech-detail-header {
    opacity: 1;
}

.tech-see-all {
    color: #1d50a2;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: color 0.3s ease;
}

.tech-see-all:hover {
    color: #00a273;
}

/* 详情内容 */
.tech-detail-content {
    opacity: 0;
    transition: opacity 0.3s ease 0.3s;
}

.tech-detail-panel.show .tech-detail-content {
    opacity: 1;
}

.tech-detail-item {
    display: none;
    width: 100%;
}

.tech-detail-item.active {
    display: block;
}

.tech-detail-item h2 {
    font-size: 32px;
    color: #1a1a1a;
    margin-bottom: 24px;
    font-weight: bold;
}

/* 详情卡片网格 */
.tech-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.tech-detail-desc {
    margin-bottom: 24px;
}

.tech-detail-desc p {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
    margin: 0;
}

.tech-detail-card {
    border-radius: 16px;
    overflow: hidden;
    background: #f8f9fa;
    transition: all 0.3s ease;
}

.tech-detail-card:hover {
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);
    transform: translateY(-5px);
}

.tech-detail-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.tech-detail-card img.img-top {
    object-position: center 40%;
}

.tech-detail-card img.img-mfss {
    object-position: center 18%;
}

.tech-detail-card.tech-logo-card {
    padding: 24px;
    background: #fff;
    border: 1px solid #eee;
    display: flex;
    flex-direction: column;
}

.tech-detail-card.tech-logo-card img {
    width: auto;
    height: 70px;
    object-fit: contain;
    margin-bottom: 15px;
}

.tech-detail-card h3 {
    font-size: 18px;
    color: #333;
    padding: 12px 15px 8px;
    margin: 0;
}

.tech-detail-card p {
    font-size: 15px;
    color: #666;
    padding: 0 15px 10px;
    line-height: 1.5;
    margin: 0;
	text-align:left;
}

.tech-detail-card .tech-btn {
    display: inline-block;
    margin: 0 15px 15px;
    color: #1d50a2;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    padding: 8px 16px;
    border-radius: 20px;
}

.tech-detail-card .tech-btn:hover {
    background: linear-gradient(90deg, rgb(29, 80, 162), rgb(0, 162, 115));
    color: #fff;
}

/* 响应式 */
@media (max-width: 1200px) {
    .tech-carousel-container {
        flex-direction: row;
        padding: 0 40px;
        width: 100%;
    }
    
    .tech-cards-wrapper {
        flex: 0 0 100%;
    }
    
    .tech-carousel-container.active .tech-cards-wrapper {
        flex: 0 0 20%;
    }
    
    .tech-carousel-container.active .tech-detail-panel {
        flex: 0 0 80%;
    }
}

@media (max-width: 768px) {
    .tech-carousel-container {
        flex-direction: column;
        padding: 0 20px;
    }
    
    .tech-cards-wrapper,
    .tech-carousel-container.active .tech-cards-wrapper {
        flex: none;
        width: 100%;
    }
    
    .tech-carousel-container.active .tech-detail-panel {
        flex: none;
        width: 100%;
        margin-left: 0;
        margin-top: 20px;
    }
    
    .tech-detail-grid {
        grid-template-columns: 1fr;
    }
}

/* 各部分之间的空白 */
.tech-part1 {
    background: linear-gradient(to right, #e8e8e8, #f5f5f5);
    padding: 0 0 45px 0;
}

.tech-part1 + .tech-part1 {
    margin-top: 45px;
}

.tech-section-title + .tech-part1 {
    padding-top: 0;
}

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

body {
    font-family: 'Inter', Arial, sans-serif;
    background: #f5f5f5;
}

/* 通用容器 */
.tech-container {
    width: 100%;
    max-width: 1920px;
    margin: 0 auto;
    padding: 0 60px;
    box-sizing: border-box;
}

/* 通用按钮样式 */
.tech-btn {
    display: inline-block;
    padding: 8px 20px;
    border: 2px solid #0071bc;
    border-radius: 20px;
    color: #0071bc;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
}

.tech-btn:hover {
    background: #0071bc;
    color: #fff;
}

/* ==================== 第一部分：Techniques & Applications ==================== */
.tech-part1 .tech-container {
    display: flex;
    gap: 30px;
    align-items: center;
}

/* 第二部分：左右对调 */
.tech-part1-reverse .tech-container {
    flex-direction: row-reverse;
}

/* 左侧大图 - 直角 */
.tech-main-card {
    position: relative;
    width: 40%;
    height: 450px;
    overflow: hidden;
    /* 直角，去掉border-radius */
    margin-top: 30px;
}

/* 第二部分右侧大图也保持一致 */
.tech-part1-reverse .tech-main-card {
    margin-top: 30px;
}

.tech-main-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.tech-main-title {
    position: absolute;
    top: 50%;
    left: 30px;
    transform: translateY(-50%);
    color: #fff;
    font-size: 32px;
    font-weight: bold;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

/* 右侧小卡片 - 无背景 */
.tech-side-cards {
    width: 60%;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.tech-card {
    display: flex;
    align-items: center;
    gap: 30px;
    /* 去掉白色背景 */
    background: transparent;
    border-radius: 12px;
    padding: 20px 20px;
    flex: 1;
}

.tech-card-img {
    width: auto;
    height: auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-card-img img {
    max-width: 180px;
    height: auto;
}

/* 第一部分图片放大 */
.tech-part1:first-of-type .tech-card-img {
    max-width: 280px;
    margin-right: 10px;
}

.tech-part1:first-of-type .tech-card {
    padding: 15px;
}

/* 卡片图片占位 - 去掉渐变 */
.tech-card:first-child .tech-card-img {
    /* background: linear-gradient(45deg, #2ecc71, #27ae60); */
}

.tech-card:last-child .tech-card-img {
    /* background: linear-gradient(45deg, #e74c3c, #c0392b); */
}

.tech-card-content {
    width: 60%;
}

.tech-card-content h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 10px;
}

.tech-card-content p {
    font-size: 18px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 15px;
}

/* ==================== 第二部分：Geophysical Software System ==================== */
.tech-part2 {
    background: #f5f5f5;
    padding: 60px 0;
}

.software-item {
    display: flex;
    align-items: center;
    gap: 40px;
    margin-bottom: 40px;
}

.software-item:last-child {
    margin-bottom: 0;
}

.software-reverse {
    flex-direction: row-reverse;
}

.software-img {
    width: 40%;
    height: 150px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 12px;
    overflow: hidden;
}

.software-img img {
    max-width: 100%;
    height: auto;
}

/* GeoEast 占位 */
.software-item:first-child .software-img {
    background: linear-gradient(135deg, #3498db, #2980b9);
}

/* KLSeis 占位 */
.software-item:last-child .software-img {
    background: linear-gradient(135deg, #9b59b6, #8e44ad);
}


.software-content {
    width: 60%;
}

.software-content h3 {
    font-size: 24px;
    color: #333;
    margin-bottom: 15px;
}

.software-content p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
}

/* ==================== 第三、四部分：Software/Equipment Development ==================== */
.tech-part3 {
    background: linear-gradient(to right, #87CEEB, #E0F6FF);
    padding: 0;
}

.tech-part4 {
    background: linear-gradient(to right, #E0F6FF, #87CEEB);
    padding: 0;
}

.split-layout {
    display: flex;
    min-height: 600px;
}

/* 左侧大图 */
.split-left {
    width: 50%;
    position: relative;
    overflow: hidden;
}

/* Software Development 大图占位 */
.tech-part3 .split-left {
    background: linear-gradient(135deg, #34495e, #2c3e50, #1a252f);
}

/* Equipment Development 大图占位 */
.tech-part4 .split-left {
    background: linear-gradient(135deg, #1abc9c, #16a085, #0e6655);
}

.split-left img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.split-title {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    font-size: 36px;
    font-weight: bold;
    text-align: center;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

/* 右侧内容 */
.split-right {
    width: 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 40px;
    gap: 40px;
}

.right-module {
    display: flex;
    align-items: center;
    gap: 30px;
    background: #fff;
    border-radius: 12px;
    padding: 20px;
}

.module-reverse {
    flex-direction: row-reverse;
}

.module-img {
    width: 50%;
    height: 100px;
    border-radius: 8px;
    overflow: hidden;
}

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

/* 模块图片占位 */
.tech-part3 .right-module:nth-child(1) .module-img {
    background: linear-gradient(45deg, #3498db, #2980b9);
}

.tech-part3 .right-module:nth-child(2) .module-img {
    background: linear-gradient(45deg, #f39c12, #d68910);
}

.tech-part4 .right-module:nth-child(1) .module-img {
    background: linear-gradient(45deg, #27ae60, #229954);
}

.tech-part4 .right-module:nth-child(2) .module-img {
    background: linear-gradient(45deg, #e74c3c, #c0392b);
}

.module-content {
    width: 50%;
}

.module-content h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 10px;
}

.module-content p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 15px;
}

/* Equipment Development 布局反转 */
.equip-layout {
    flex-direction: row-reverse;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1200px) {
    .tech-container {
        width: 100%;
        padding: 0 20px;
    }
}

@media (max-width: 768px) {
    .tech-part1 .tech-container,
    .software-item,
    .software-reverse,
    .split-layout,
    .equip-layout,
    .right-module,
    .module-reverse {
        flex-direction: column;
    }
    
    .tech-main-card,
    .tech-side-cards,
    .software-img,
    .software-content,
    .split-left,
    .split-right,
    .module-img,
    .module-content {
        width: 100%;
    }
    
    .tech-main-card {
        height: 250px;
    }
    
    .split-layout {
        min-height: auto;
    }
    
    .split-left {
        height: 250px;
    }
}

/* ==================== CONTACT US 样式 ==================== */
.contact-section {
  background: linear-gradient(90deg, #e73650 0%, #1d50a3 35%, #0f62a6 52%, #01779f 68%, #018995 84%, #00a271 100%);
  color: #fff;
  padding: 50px 0 25px;
  margin-top:45px;
  font-family: 'Inter', Arial, sans-serif;
}

.contact-container {
  width: 1200px;
  margin: 0 auto;
  max-width: 100%;
  padding: 0 60px;
}

/* 上部分：联系信息和社交媒体 */
.contact-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 35px;
  min-height: 100px;
}

/* 左侧：联系方式 */
.contact-info-wrapper {
  flex: 1;
}

.contact-section-title {
  font-size: 50px;
  font-weight: bold;
  color: #fff;
  margin-bottom: 30px;
  text-transform: capitalize;
  letter-spacing: 2px;
  text-align: left;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.contact-icon {
  width: 24px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
}

.contact-text {
  font-size: 15px;
  color: #fff;
  line-height: 1.5;
  text-align: left;
}

.contact-text a {
  color: #fff;
  text-decoration: none;
}

.contact-text a:hover {
  text-decoration: underline;
}

/* 右侧：社交媒体 */
.contact-social {
  flex-shrink: 0;
  display: flex;
  align-items: flex-start;
  padding-top: 48px;
}

/* 社交媒体图标 */
.social-icons {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 40px;
  height: 40px;
  border: 2px solid rgba(255, 255, 255, 0.7);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  background: transparent;
  color: #fff;
  font-size: 16px;
}

.social-link:hover {
  background: #fff;
  border-color: #fff;
  color: #1f54a4;
  transform: translateY(-2px);
}

/* 下部分：社交媒体图标左对齐，链接右对齐 */
.contact-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}

.contact-bottom .social-icons {
  display: flex;
  gap: 12px;
}

.contact-links {
  display: flex;
  gap: 10px;
  align-items: center;
}

.contact-links a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 15px;
  text-decoration: none;
  transition: color 0.3s ease;
}

.contact-links a:hover {
  color: #fff;
}

.contact-separator {
  color: rgba(255, 255, 255, 0.5);
}

/* 响应式适配 */
@media (max-width: 768px) {
  .contact-container {
    padding: 0 30px;
  }

  .footer-top {
    flex-direction: column;
    align-items: flex-start;
    min-height: auto;
    margin-bottom: 25px;
  }

  .footer-social {
    padding-top: 0;
    margin-top: 20px;
  }

  .footer-section-title {
    font-size: 18px;
  }

  .contact-text {
    font-size: 12px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 15px;
  }

  .footer-copyright,
  .footer-links {
    text-align: center;
  }
}

@media (max-width: 480px) {
  .site-footer {
    padding: 35px 0 20px;
  }

  .social-icons {
    justify-content: center;
  }
}

/* ==================== FOOTER 样式结束 ==================== */





/* ==================== BGP NEWS 响应式布局 ==================== */

/* 平板 (768px - 1024px) */
@media screen and (max-width: 1024px) {
  .news-container {
    width: 100%;
    max-width: 100%;
    padding: 0 30px;
  }

  .news-title {
    font-size: 36px;
  }
    gap: 20px;
  }

  .main-news-text {
    width: 100%;
  }

  .main-news-text h3 {
    font-size: 28px;
  }

  .main-news-img {
    width: 100%;
    height: 300px;
  }

  /* 1024px以上保持3列，不要换行 */
  .news-list {
    flex-wrap: nowrap;
    gap: 44px;
  }

  .news-card {
    flex: 0 0 calc((100% - 88px) / 3);
    max-width: calc((100% - 88px) / 3);
    min-width: auto;
    height: auto;
    aspect-ratio: 1 / 1;
  }

  .news-card-title {
    font-size: 22px;
  }

  .news-card:hover .news-card-content {
    bottom: 110px;
  }
}

/* 平板以下 (480px - 900px) */
@media screen and (max-width: 900px) {
  .news-card {
    flex: 1 1 calc(50% - 10px);
    min-width: 280px;
  }
}

/* 手机 (480px - 768px) */
@media screen and (max-width: 768px) {
  .news-container {
    width: 95%;
    padding: 0 15px;
  }

  .news-wrap {
    padding: 30px 0;
  }

  .news-title {
    font-size: 28px;
    margin-bottom: 24px;
  }

  .main-news-text h3 {
    font-size: 22px;
  }

  .main-news-text .summary {
    font-size: 14px;
    line-height: 1.8;
  }

  .news-list {
    flex-direction: column;
    gap: 16px;
  }

  .news-list.three-cards .news-card {
    flex: none;
    width: 100%;
    max-width: none;
    aspect-ratio: unset;
  }

  .news-card {
    width: 100%;
  }

  .news-card-content {
    bottom: 20px;
    left: 20px;
    right: 20px;
  }

  .news-card-title {
    font-size: 22px;
    margin-bottom: 10px;
  }

  .news-card-date {
    font-size: 14px;
  }

  .news-card:hover .news-card-title {
    font-size: 20px;
  }

  .news-card:hover .news-card-content {
    bottom: 100px;
  }

  .news-card-detail p {
    font-size: 13px;
    -webkit-line-clamp: 2;
  }

  .news-card-arrow {
    width: 36px;
    height: 36px;
    font-size: 18px;
    bottom: 16px;
  }

  .news-card:hover .news-card-arrow {
    bottom: 100px;
  }

  .read-more-btn {
    padding: 8px 16px;
    font-size: 13px;
  }

  .all-news-link {
    text-align: center;
    margin-top: 20px;
  }
}

/* 小屏手机 (480px) */
@media screen and (max-width: 480px) {
  .news-title {
    font-size: 24px;
  }

  .main-news {
    margin-bottom: 20px;
    padding-bottom: 20px;
  }

  .main-news-text h3 {
    font-size: 18px;
  }

  .main-news-img {
    height: 200px;
  }

  .news-card {
    width: 100%;
  }

  .news-card-title {
    font-size: 20px;
  }

  .news-card-detail {
    padding: 12px;
  }

  .news-card-detail p {
    font-size: 12px;
  }
}

/* ==================== 官方页脚样式（已弃用，请使用 contact-v2-section） ==================== */
/* 蓝绿渐变版本已移除，如有需要请从备份中恢复 */
  }
}

.xz-manyidu {
  color: #666;
}

/* ==================== CONTACT US 栏目样式 ==================== */
.contact-v2-section {
  background: linear-gradient(90deg, #1d50a3 0%, #0f62a6 25%, #01779f 50%, #018995 75%, #00a271 100%);
  color: #fff;
  padding: 50px 0 25px;
  margin-top: 45px;
  font-family: 'Inter', Arial, sans-serif;
}

.contact-v2-container {
  width: 100%;
  max-width: 1920px;
  margin: 0 auto;
  padding: 0 158px;  /* 第八版修改：左右边距改为158px */
  box-sizing: border-box;
}

.contact-v2-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 35px;
  min-height: 100px;
}

.contact-v2-info {
  flex: 1;
  margin-left: 0;
}

.contact-v2-section-title {
  font-size: 50px;
  font-weight: bold;
  color: #fff;
  margin-bottom: 30px;
  text-transform: uppercase;
  letter-spacing: 2px;
  text-align: left;
}

.contact-v2-details {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-v2-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.contact-v2-icon {
  width: 24px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
}

.contact-v2-text {
  font-size: 13px;
  color: #fff;
  line-height: 1.5;
  text-align: left;
}

.contact-v2-text a {
  color: #fff;
  text-decoration: none;
}

.contact-v2-text a:hover {
  text-decoration: underline;
}

.contact-v2-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}

.contact-v2-social-icons {
  display: flex;
  gap: 12px;
}

.contact-v2-social-link {
  width: 40px;
  height: 40px;
  border: 2px solid rgba(255, 255, 255, 0.7);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  background: transparent;
  color: #fff;
  font-size: 16px;
}

.contact-v2-social-link:hover {
  background: #fff;
  border-color: #fff;
  color: #1f54a4;
  transform: translateY(-2px);
}

.contact-v2-links {
  display: flex;
  gap: 10px;
  align-items: center;
}

.contact-v2-links a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 12px;
  text-decoration: none;
  transition: color 0.3s ease;
}

.contact-v2-links span {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.85);
}

.contact-v2-links a:hover {
  color: #fff;
}

.contact-v2-separator {
  color: rgba(255, 255, 255, 0.5);
}

/* 响应式适配 */
@media (max-width: 768px) {
  .contact-v2-container {
    padding: 0 30px;
  }

  .contact-v2-section-title {
    font-size: 32px;
  }

  .contact-v2-top {
    flex-direction: column;
    gap: 20px;
  }

  .contact-v2-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}