@charset "utf-8";
/**
 * 关于我们页面增强样式
 * About Us Page Enhancement Styles
 */

/* ========================================
   公司发展历程时间轴 - 横向滚动
   Company Timeline Section - Horizontal
   ======================================== */
.company-timeline {
  background: #fff;
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}

.company-timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 10% 20%, rgba(255,112,25,0.03) 0%, transparent 50%),
    radial-gradient(circle at 90% 80%, rgba(255,112,25,0.03) 0%, transparent 50%);
}

.company-timeline .timeline-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

/* 时间轴标题 */
.about-section-title {
  text-align: center;
  margin-bottom: 70px;
  position: relative;
}

.about-section-title::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(135deg, #ff7019 0%, #ff9a56 100%);
  border-radius: 2px;
}

.about-section-title dd {
  font-size: 34px;
  font-weight: 700;
  color: #2d3436;
  margin-bottom: 15px;
  letter-spacing: 2px;
  display: block;
  text-align: center;
}

.about-section-title dt {
  font-size: 16px;
  color: #636e72;
  line-height: 1.8;
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

/* 横向时间轴容器 */
.timeline-horizontal-wrapper {
  position: relative;
  overflow: hidden;
  padding: 60px 0 80px;
}

.timeline-horizontal {
  display: flex;
  gap: 40px;
  transition: transform 0.5s ease;
  padding-bottom: 40px;
  position: relative;
}

/* 时间轴项目 */
.timeline-item {
  flex: 0 0 350px;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* 时间轴节点 - 圆点在线条上方 */
.timeline-dot {
  width: 24px;
  height: 24px;
  background: linear-gradient(135deg, #ff7019 0%, #ff9a56 100%);
  border-radius: 50%;
  border: 5px solid #fff;
  box-shadow: 0 0 0 4px rgba(255,112,25,0.2), 0 5px 20px rgba(255,112,25,0.3);
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  transition: all 0.4s ease;
}

.timeline-item:hover .timeline-dot {
  transform: translateX(-50%) scale(1.3);
  box-shadow: 0 0 0 8px rgba(255,112,25,0.15), 0 8px 30px rgba(255,112,25,0.4);
}

/* 从内容卡片到圆点的连接线 */
.timeline-dot::before {
  content: '';
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 30px;
  background: linear-gradient(180deg, 
    rgba(255, 112, 25, 0.3) 0%, 
    #ff7019 100%
  );
  z-index: 2;
}

/* 横向时间线 - 在圆点下方，营造时间流动效果 */
.timeline-horizontal::before {
  content: '';
  position: absolute;
  bottom: 12px;
  left: 175px;
  right: -9999px;
  height: 4px;
  background: linear-gradient(90deg, 
    #ff7019 0%, 
    #ff9a56 20%, 
    #ffc078 40%,
    #ff9a56 60%,
    #ff7019 80%,
    #ff9a56 100%
  );
  border-radius: 2px;
  box-shadow: 0 2px 15px rgba(255,112,25,0.4);
  z-index: 1;
}

/* 添加流动光效动画 */
.timeline-horizontal::after {
  content: '';
  position: absolute;
  bottom: 12px;
  left: 175px;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(255, 255, 255, 0.9) 50%, 
    transparent 100%
  );
  border-radius: 2px;
  z-index: 2;
  animation: timelineFlow 4s linear infinite;
}

@keyframes timelineFlow {
  0% {
    transform: translateX(0);
    opacity: 0;
  }
  5% {
    opacity: 1;
  }
  95% {
    opacity: 1;
  }
  100% {
    transform: translateX(calc((350px + 40px) * 8));
    opacity: 0;
  }
}

/* 时间轴内容卡片 */
.timeline-content {
  background: #fff;
  border-radius: 20px;
  padding: 35px;
  width: 100%;
  position: relative;
  border: 1px solid rgba(0,0,0,0.05);
  box-shadow: 0 10px 40px rgba(0,0,0,0.08);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  margin-bottom: 40px;
}

.timeline-content::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border: 10px solid transparent;
  border-top-color: #fff;
}

.timeline-content:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.12);
}

/* 年份标签 */
.timeline-year {
  display: inline-block;
  background: linear-gradient(135deg, #ff7019 0%, #ff9a56 100%);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  padding: 8px 24px;
  border-radius: 30px;
  margin-bottom: 20px;
  box-shadow: 0 6px 20px rgba(255,112,25,0.3);
}

.timeline-content h4 {
  font-size: 20px;
  color: #2d3436;
  margin-bottom: 12px;
  font-weight: 700;
}

.timeline-content p {
  font-size: 15px;
  color: #636e72;
  line-height: 1.8;
  margin: 0;
}

/* 时间轴图标 */
.timeline-icon {
  position: absolute;
  top: -15px;
  right: 20px;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, rgba(255,112,25,0.1) 0%, rgba(255,112,25,0.05) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.4s ease;
}

.timeline-icon .iconfont {
  font-size: 24px;
  color: #ff7019;
  transition: all 0.4s ease;
}

.timeline-content:hover .timeline-icon {
  background: linear-gradient(135deg, #ff7019 0%, #ff9a56 100%);
  transform: rotate(10deg) scale(1.1);
  box-shadow: 0 8px 25px rgba(255,112,25,0.35);
}

.timeline-content:hover .timeline-icon .iconfont {
  color: #fff;
}

/* 时间轴导航按钮 */
.timeline-nav {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  display: flex;
  justify-content: space-between;
  pointer-events: none;
  z-index: 10;
  padding: 0 20px;
}

.timeline-nav-btn {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #ff7019 0%, #ff9a56 100%);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  pointer-events: all;
  transition: all 0.3s ease;
  box-shadow: 0 5px 20px rgba(255,112,25,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
}

.timeline-nav-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 30px rgba(255,112,25,0.5);
}

.timeline-nav-btn.prev .iconfont {
  transform: rotate(180deg);
}

.timeline-nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  pointer-events: none;
}


/* ========================================
   团队介绍模块 - 自动轮播
   Team Introduction Section - Carousel
   ======================================== */
.team-section {
  background: #f8f9fc;
  padding: 80px 0;
  position: relative;
}

.team-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(180deg, rgba(255,255,255,0.8) 0%, transparent 100%);
}

.team-section .team-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

/* 团队轮播容器 */
.team-carousel-wrapper {
  position: relative;
  overflow: hidden;
  padding: 20px 0 60px;
}

.team-carousel {
  display: flex;
  gap: 35px;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* 团队成员卡片 */
.team-card {
  flex: 0 0 calc(25% - 27px);
  background: #fff;
  border-radius: 24px;
  overflow: hidden;
  transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  border: 1px solid rgba(0,0,0,0.04);
  box-shadow: 0 8px 30px rgba(0,0,0,0.06);
}

.team-card:hover {
  transform: translateY(-15px);
  box-shadow: 0 25px 60px rgba(0,0,0,0.12);
}

/* 成员头像区域 */
.team-card .member-avatar {
  position: relative;
  width: 150px;
  height: 150px;
  margin: 30px auto 0;
  overflow: hidden;
  border-radius: 50%;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

.team-card .member-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: all 0.6s ease;
}

.team-card:hover .member-avatar img {
  transform: scale(1.1);
}

/* 头像占位符 */
.team-card .avatar-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #ff7019 0%, #ff9a56 100%);
}

.team-card .avatar-placeholder .iconfont {
  font-size: 80px;
  color: rgba(255,255,255,0.9);
}

/* 成员信息遮罩 */
.team-card .member-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 30px 20px 20px;
  background: linear-gradient(180deg, transparent 0%, rgba(0,0,0,0.8) 100%);
  transform: translateY(100%);
  transition: all 0.4s ease;
}

.team-card:hover .member-overlay {
  transform: translateY(0);
}

.team-card .member-overlay .social-links {
  display: flex;
  justify-content: center;
  gap: 15px;
}

.team-card .member-overlay .social-links a {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  transition: all 0.3s ease;
}

.team-card .member-overlay .social-links a:hover {
  background: #ff7019;
  transform: translateY(-3px);
}

/* 成员信息 */
.team-card .member-info {
  padding: 30px 25px;
  text-align: center;
}

.team-card .member-info h4 {
  font-size: 20px;
  color: #2d3436;
  margin-bottom: 8px;
  font-weight: 700;
}

.team-card .member-info .position {
  font-size: 14px;
  color: #ff7019;
  font-weight: 600;
  margin-bottom: 15px;
  display: block;
}

.team-card .member-info p {
  font-size: 14px;
  color: #636e72;
  line-height: 1.7;
  margin: 0;
}

/* 成员技能标签 */
.team-card .member-skills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 15px;
}

.team-card .member-skills .skill-tag {
  background: linear-gradient(135deg, rgba(255,112,25,0.1) 0%, rgba(255,112,25,0.05) 100%);
  color: #ff7019;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 15px;
  transition: all 0.3s ease;
}

.team-card:hover .member-skills .skill-tag {
  background: linear-gradient(135deg, #ff7019 0%, #ff9a56 100%);
  color: #fff;
}

/* 团队轮播导航按钮 */
.team-carousel-nav {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  display: flex;
  justify-content: space-between;
  pointer-events: none;
  z-index: 10;
  padding: 0 20px;
}

.team-nav-btn {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #ff7019 0%, #ff9a56 100%);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  pointer-events: all;
  transition: all 0.3s ease;
  box-shadow: 0 5px 20px rgba(255,112,25,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
}

.team-nav-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 30px rgba(255,112,25,0.5);
}

.team-nav-btn.prev .iconfont {
  transform: rotate(180deg);
}

.team-nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  pointer-events: none;
}

/* 轮播指示器 */
.team-carousel-dots {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 30px;
}

.team-carousel-dots .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #ddd;
  cursor: pointer;
  transition: all 0.3s ease;
}

.team-carousel-dots .dot.active {
  background: linear-gradient(135deg, #ff7019 0%, #ff9a56 100%);
  width: 32px;
  border-radius: 6px;
}

.team-carousel-dots .dot:hover {
  background: #ff7019;
}


/* ========================================
   资质荣誉展示增强
   Enhanced Certifications Section
   ======================================== */
.certifications-section {
  background: #fff;
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.certifications-section::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,112,25,0.04) 0%, transparent 70%);
  top: -200px;
  right: -200px;
  border-radius: 50%;
}

.certifications-section .cert-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

/* 证书网格 */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

/* 证书卡片 */
.cert-card {
  background: #fff;
  border-radius: 20px;
  overflow: hidden;
  transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  border: 2px solid #e8ecef;
  box-shadow: 0 5px 25px rgba(0,0,0,0.04);
}

.cert-card:hover {
  transform: translateY(-12px);
  border-color: #ff7019;
  box-shadow: 0 25px 60px rgba(0,0,0,0.12);
}

/* 证书图片 */
.cert-card .cert-image {
  position: relative;
  height: 220px;
  overflow: hidden;
  background: #f8f9fc;
}

.cert-card .cert-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 20px;
  transition: all 0.5s ease;
}

.cert-card:hover .cert-image img {
  transform: scale(1.05);
}

/* 证书查看按钮 */
.cert-card .cert-image .view-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #ff7019 0%, #ff9a56 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all 0.4s ease;
  cursor: pointer;
  box-shadow: 0 10px 30px rgba(255,112,25,0.4);
}

.cert-card .cert-image .view-btn .iconfont {
  font-size: 24px;
  color: #fff;
}

.cert-card:hover .cert-image .view-btn {
  transform: translate(-50%, -50%) scale(1);
  opacity: 1;
}

/* 证书信息 */
.cert-card .cert-info {
  padding: 25px;
  text-align: center;
  border-top: 1px solid #e8ecef;
}

.cert-card .cert-info h4 {
  font-size: 16px;
  color: #2d3436;
  margin-bottom: 8px;
  font-weight: 700;
}

.cert-card .cert-info p {
  font-size: 13px;
  color: #636e72;
  margin: 0;
}

/* 证书徽章 */
.cert-card .cert-badge {
  position: absolute;
  top: 15px;
  right: 15px;
  background: linear-gradient(135deg, #ff7019 0%, #ff9a56 100%);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 20px;
  box-shadow: 0 4px 15px rgba(255,112,25,0.3);
}


/* ========================================
   合作伙伴展示增强
   Enhanced Partners Section
   ======================================== */
.partners-enhanced {
  background: #f8f9fc;
  padding: 100px 0;
  position: relative;
}

.partners-enhanced .partners-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 合作伙伴分类标签 */
.partner-tabs {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 50px;
  flex-wrap: wrap;
}

.partner-tabs .tab-btn {
  padding: 12px 30px;
  background: #fff;
  border: 2px solid #e8ecef;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  color: #636e72;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}

.partner-tabs .tab-btn:hover {
  border-color: #ff7019;
  color: #ff7019;
}

.partner-tabs .tab-btn.active {
  background: linear-gradient(135deg, #ff7019 0%, #ff9a56 100%);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 25px rgba(255,112,25,0.35);
}

/* 技术合作伙伴区域 */
.tech-partners {
  margin-bottom: 60px;
}

.tech-partners .partner-subtitle {
  text-align: center;
  font-size: 20px;
  color: #2d3436;
  margin-bottom: 35px;
  font-weight: 600;
  position: relative;
  display: inline-block;
  width: 100%;
}

.tech-partners .partner-subtitle::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  background: linear-gradient(135deg, #ff7019 0%, #ff9a56 100%);
  border-radius: 2px;
}

/* 技术伙伴Logo网格 */
.tech-partner-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 25px;
}

.tech-partner-item {
  background: #fff;
  border-radius: 16px;
  padding: 30px 20px;
  text-align: center;
  transition: all 0.4s ease;
  border: 2px solid transparent;
  box-shadow: 0 5px 20px rgba(0,0,0,0.04);
}

.tech-partner-item:hover {
  transform: translateY(-8px);
  border-color: #ff7019;
  box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}

.tech-partner-item img {
  max-width: 100%;
  max-height: 50px;
  filter: grayscale(100%);
  opacity: 0.7;
  transition: all 0.4s ease;
}

.tech-partner-item:hover img {
  filter: grayscale(0%);
  opacity: 1;
}

.tech-partner-item .partner-name {
  font-size: 14px;
  color: #636e72;
  margin-top: 15px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.tech-partner-item:hover .partner-name {
  color: #ff7019;
}

/* 客户Logo墙 */
.client-logos {
  margin-top: 60px;
}

.client-logos .partner-subtitle {
  text-align: center;
  font-size: 20px;
  color: #2d3436;
  margin-bottom: 35px;
  font-weight: 600;
  position: relative;
  display: inline-block;
  width: 100%;
}

.client-logos .partner-subtitle::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  background: linear-gradient(135deg, #ff7019 0%, #ff9a56 100%);
  border-radius: 2px;
}

/* 行业分类客户 */
.industry-clients {
  margin-bottom: 40px;
}

.industry-clients .industry-label {
  display: inline-block;
  background: linear-gradient(135deg, rgba(255,112,25,0.1) 0%, rgba(255,112,25,0.05) 100%);
  color: #ff7019;
  font-size: 14px;
  font-weight: 700;
  padding: 8px 20px;
  border-radius: 25px;
  margin-bottom: 25px;
}

.client-logo-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}

.client-logo-item {
  background: #fff;
  border-radius: 12px;
  padding: 25px 15px;
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid #e8ecef;
}

.client-logo-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
  border-color: #ff7019;
}

.client-logo-item img {
  max-width: 100%;
  max-height: 40px;
  filter: grayscale(100%);
  opacity: 0.6;
  transition: all 0.3s ease;
}

.client-logo-item:hover img {
  filter: grayscale(0%);
  opacity: 1;
}


/* ========================================
   响应式适配
   Responsive Styles
   ======================================== */
@media (max-width: 1200px) {
  .team-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .cert-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .tech-partner-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .client-logo-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 992px) {
  .company-timeline,
  .team-section,
  .certifications-section,
  .partners-enhanced {
    padding: 80px 0;
  }
  
  .about-section-title dd {
    font-size: 28px;
  }
  
  .timeline-wrapper::before {
    left: 30px;
  }
  
  .timeline-item {
    padding-right: 0;
    padding-left: 80px;
    justify-content: flex-start;
  }
  
  .timeline-item:nth-child(even) {
    padding-left: 80px;
  }
  
  .timeline-item::before {
    left: 30px;
    transform: translateX(-50%);
  }
  
  .timeline-item:nth-child(odd) .timeline-content::before,
  .timeline-item:nth-child(even) .timeline-content::before {
    left: -24px;
    right: auto;
    border-left-color: transparent;
    border-right-color: #fff;
  }
  
  .timeline-content {
    max-width: 100%;
  }
  
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
  }
  
  .cert-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .tech-partner-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .client-logo-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .company-timeline,
  .team-section,
  .certifications-section,
  .partners-enhanced {
    padding: 60px 0;
  }
  
  .about-section-title {
    margin-bottom: 50px;
  }
  
  .about-section-title dd {
    font-size: 24px;
  }
  
  .about-section-title dt {
    font-size: 14px;
  }
  
  .timeline-item {
    padding-left: 60px;
  }
  
  .timeline-item:nth-child(even) {
    padding-left: 60px;
  }
  
  .timeline-wrapper::before {
    left: 20px;
  }
  
  .timeline-item::before {
    left: 20px;
    width: 18px;
    height: 18px;
  }
  
  .timeline-content {
    padding: 25px;
  }
  
  .timeline-year {
    font-size: 16px;
    padding: 6px 18px;
  }
  
  .timeline-content h4 {
    font-size: 18px;
  }
  
  .timeline-content p {
    font-size: 14px;
  }
  
  .team-card .member-avatar {
    width: 120px;
    height: 120px;
  }
  
  .team-card .member-info {
    padding: 25px 20px;
  }
  
  .team-card .member-info h4 {
    font-size: 18px;
  }
  
  .cert-card .cert-image {
    height: 180px;
  }
  
  .cert-card .cert-info {
    padding: 20px;
  }
  
  .partner-tabs {
    gap: 10px;
  }
  
  .partner-tabs .tab-btn {
    padding: 10px 20px;
    font-size: 14px;
  }
  
  .tech-partner-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
  
  .client-logo-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
}

@media (max-width: 576px) {
  .team-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .cert-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .timeline-item {
    padding-left: 50px;
  }
  
  .timeline-item:nth-child(even) {
    padding-left: 50px;
  }
  
  .timeline-wrapper::before {
    left: 15px;
    width: 3px;
  }
  
  .timeline-item::before {
    left: 15px;
    width: 16px;
    height: 16px;
    border-width: 3px;
  }
  
  .timeline-content {
    padding: 20px;
  }
  
  .timeline-icon {
    width: 40px;
    height: 40px;
    top: -10px;
    right: 15px;
  }
  
  .timeline-icon .iconfont {
    font-size: 18px;
  }
  
  .tech-partner-item {
    padding: 20px 15px;
  }
  
  .client-logo-item {
    padding: 20px 10px;
  }
}


/* Fix for about_banner height issue */
.about_banner {
  position: relative;
  max-height: 600px;
  overflow: hidden;
}

.about_banner .about_banner_img {
  max-height: 600px;
  overflow: hidden;
}

.about_banner .about_banner_img img {
  width: 100%;
  height: auto;
  max-height: 600px;
  object-fit: cover;
}


/* ========================================
   证书查看器
   Certificate Viewer
   ======================================== */
.cert-viewer {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 99999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.cert-viewer.active {
  display: flex;
}

.cert-viewer-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.9);
  animation: fadeIn 0.3s ease;
}

.cert-viewer-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  width: 100%;
  background: #fff;
  border-radius: 20px;
  overflow: hidden;
  animation: zoomIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.3);
}

.cert-viewer-content img {
  width: 100%;
  height: auto;
  display: block;
  max-height: 70vh;
  object-fit: contain;
  background: #f8f9fa;
  padding: 30px;
}

.cert-viewer-info {
  padding: 30px;
  text-align: center;
  border-top: 1px solid #e8ecef;
}

.cert-viewer-info h3 {
  font-size: 24px;
  color: #2d3436;
  margin-bottom: 10px;
  font-weight: 700;
}

.cert-viewer-info p {
  font-size: 16px;
  color: #636e72;
  margin: 0;
}

.cert-viewer-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  background: rgba(255, 255, 255, 0.95);
  border: none;
  border-radius: 50%;
  font-size: 32px;
  line-height: 1;
  color: #2d3436;
  cursor: pointer;
  transition: all 0.3s ease;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.cert-viewer-close:hover {
  background: #ff7019;
  color: #fff;
  transform: rotate(90deg) scale(1.1);
}

/* 证书卡片添加点击提示 */
.cert-card {
  cursor: pointer;
}

.cert-card .cert-image::after {
  content: '点击查看大图';
  position: absolute;
  bottom: 15px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255, 112, 25, 0.95);
  color: #fff;
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
  white-space: nowrap;
}

.cert-card:hover .cert-image::after {
  opacity: 1;
  bottom: 20px;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes zoomIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@media (max-width: 768px) {
  .cert-viewer-content {
    max-width: 100%;
    margin: 0 10px;
  }
  
  .cert-viewer-content img {
    padding: 20px;
    max-height: 60vh;
  }
  
  .cert-viewer-info {
    padding: 20px;
  }
  
  .cert-viewer-info h3 {
    font-size: 20px;
  }
  
  .cert-viewer-info p {
    font-size: 14px;
  }
  
  .cert-viewer-close {
    width: 40px;
    height: 40px;
    font-size: 28px;
    top: 15px;
    right: 15px;
  }
}