/* 通用导航栏样式 */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 5%;
  background: rgba(255, 255, 255, 0.4);
  color: #2c3e50;
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
  backdrop-filter: blur(5px);
  transition: all 0.3s ease;
}

nav.scrolled {
  padding: 0.8rem 5%;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

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

.logo img {
  height: 70px;
  width: auto;
  transition: transform 0.3s ease;
}

.logo img:hover {
  transform: scale(1.02);
}

.main-menu {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
}

.main-menu li {
  list-style: none;
  margin: 0 0.5rem;
  position: relative;
}

.main-menu a {
  font-size: 1.1rem;
  color: #2c3e50;
  transition: all 0.3s ease;
  padding: 0.8rem 1.2rem;
  text-decoration: none;
  font-weight: 600;
  border-radius: 6px;
  display: block;
}

.main-menu a:hover {
  color: #3498db;
  background: rgba(52, 152, 219, 0.05);
  text-decoration: none;
}

.main-menu a::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 3px;
  background: #3498db;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform: translateX(-50%);
}

.main-menu a:hover::after {
  width: 70%;
}

/* 下拉菜单样式 */
.dropdown {
  position: relative;
}

.dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-10px);
  background: rgba(255,255,255,0.95);
  width: 900px;
  padding: 30px 40px;
  box-shadow: 0 12px 24px rgba(0,0,0,0.15);
  z-index: 1000;
  border-radius: 8px;
  opacity: 0;
  transition: opacity 0.3s ease-out, transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  /* 确保下拉菜单不会超出视口范围 */
  max-width: 90vw;
  overflow-x: hidden;
  /* 确保在所有页面上都能正确定位 */
  margin-left: -450px;
  left: 50%;
}

.dropdown:hover .dropdown-content {
  display: flex;
  justify-content: space-between;
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.submenu {
  flex: 1;
  padding: 0 15px;
}

.submenu h4 {
  color: #2c3e50;
  margin-bottom: 16px;
  font-size: 16px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  position: relative;
  padding-bottom: 8px;
}

.submenu h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 2px;
  background: #3498db;
}

.submenu ul {
  list-style: none;
  padding: 0;
}

.submenu li {
  margin: 12px 0;
}

.submenu a {
  color: #4a5568;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
  position: relative;
  padding-left: 18px;
}

.submenu a::before {
  content: '•';
  position: absolute;
  left: 0;
  color: #3498db;
  opacity: 0;
  transition: all 0.3s ease;
}

.submenu a:hover {
  color: #3498db;
  transform: translateX(5px);
}

.submenu a:hover::before {
  opacity: 1;
  transform: translateX(0);
}

.divider {
  width: 1px;
  background: rgba(0,0,0,0.08);
  margin: 0 10px;
}

/* 通用页脚样式 */
.footer {
  background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
  color: #fff;
  padding: 80px 5% 40px;
  position: relative;
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, #3498db, #4299e1, #4fd1c5, #667eea);
}

.footer::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.5;
}

.footer-container {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 60px;
  max-width: 1300px;
  margin: 0 auto 50px;
  position: relative;
  z-index: 1;
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.footer-content {
  display: flex;
  align-items: flex-start;
  gap: 50px;
  justify-content: flex-start;
}

.qr-code {
  text-align: center;
  flex-shrink: 0;
}

.qr-image {
  width: 120px;
  height: 120px;
  border-radius: 8px;
  margin-bottom: 8px;
  background: white;
  padding: 5px;
}

.qr-code p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 16px;
  margin: 0;
}

.footer-logo {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  flex: 1;
  min-width: 300px;
}

.footer-logo h3 {
  font-size: 32px;
  letter-spacing: 2px;
  margin-bottom: 20px;
  color: #fff;
  font-weight: 800;
  background: linear-gradient(135deg, #fff, #cbd5e0);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-logo p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 25px;
}

.footer-nav {
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  text-align: right;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 50px;
  width: 100%;
  margin: 0;
  padding: 0;
  text-align: right;
}

.footer-link-group h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
  color: #fff;
  position: relative;
  padding-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-link-group h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, #3498db, #4299e1);
  border-radius: 2px;
}

.footer-link-group ul {
  list-style: none;
  margin: 0;
  padding: 0;
  text-align: right;
}

.footer-link-group li {
  margin-bottom: 12px;
}

.footer-link-group a {
  color: rgba(255, 255, 255, 0.8);
  transition: all 0.3s ease;
  text-decoration: none;
  font-size: 15px;
  position: relative;
  display: inline-block;
  padding-left: 0;
  font-weight: 500;
}

.footer-link-group a::before {
  content: '';
  position: absolute;
  right: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #3498db, #4299e1);
  transition: width 0.3s ease;
}

.footer-link-group a:hover {
  color: #3498db;
  padding-left: 0;
  transform: translateX(-5px);
}

.footer-link-group a:hover::before {
  width: 100%;
  opacity: 1;
  left: 0;
}

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  margin: 40px 0;
  max-width: 1300px;
  margin-left: auto;
  margin-right: auto;
}

.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  max-width: 1300px;
  margin: 0 auto 40px;
}

.contact-column {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 30px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.contact-column:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.contact-column h4 {
  font-size: 20px;
  margin-bottom: 20px;
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.contact-column h4::before {
  content: '';
  width: 4px;
  height: 20px;
  background: linear-gradient(135deg, #3498db, #4299e1);
  border-radius: 2px;
}

.contact-column p {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  margin: 15px 0;
  opacity: 0.9;
  font-size: 16px;
  line-height: 1.6;
}

.contact-column strong {
  color: #3498db;
  min-width: 70px;
  font-weight: 600;
}

.copyright {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  opacity: 0.7;
  font-size: 16px;
  color: #cbd5e0;
  max-width: 1300px;
  margin: 0 auto;
}

/* 5列页脚布局优化 */
.footer-links {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 40px;
  width: 100%;
  margin: 0;
  padding: 0 0 0 60px;
  text-align: left;
}

.footer-link-group h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
  color: #3498db;
  position: relative;
  padding-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  display: inline-block;
}

.footer-link-group h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, #3498db, #4299e1);
  border-radius: 2px;
}

.footer-link-group ul {
  list-style: none;
  margin: 0;
  padding: 0;
  text-align: left;
}

.footer-link-group li {
  margin-bottom: 12px;
}

.footer-link-group a {
  color: rgba(255, 255, 255, 0.8);
  transition: all 0.3s ease;
  text-decoration: none;
  font-size: 16px;
  position: relative;
  display: inline-block;
  padding-left: 0;
  font-weight: 500;
  line-height: 1.8;
}

.footer-link-group a::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #3498db, #4299e1);
  transition: width 0.3s ease;
}

.footer-link-group a:hover {
  color: #3498db;
  padding-left: 0;
  transform: translateX(5px);
}

.footer-link-group a:hover::before {
  width: 100%;
  opacity: 1;
}

/* 响应式设计 */
@media (max-width: 1200px) {
  .footer-container {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .footer-content {
    flex-direction: column;
    align-items: center;
    gap: 30px;
  }
  
  .footer-logo {
    min-width: auto;
  }
  
  .qr-code {
    margin: 0 auto;
  }
  
  .footer-links {
    grid-template-columns: repeat(3, 1fr);
    gap: 50px;
    justify-items: center;
    padding: 0;
  }
  
  .footer-link-group h4 {
    left: 50%;
    transform: translateX(-50%);
  }
  
  .footer-link-group h4::after {
    left: 0;
    transform: none;
  }
}

@media (max-width: 992px) {
  .footer {
    padding: 60px 5% 30px;
  }
  
  .footer-container {
    gap: 30px;
  }
  
  .footer-links {
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    padding: 0;
  }
  
  .contact-info {
    grid-template-columns: 1fr;
    gap: 25px;
  }
  
  .contact-column {
    padding: 25px;
  }
}

@media (max-width: 768px) {
  .footer {
    padding: 50px 5% 25px;
  }
  
  .footer-container {
    gap: 25px;
  }
  
  .footer-logo h3 {
    font-size: 28px;
  }
  
  .footer-logo p {
    font-size: 14px;
  }
  
  .footer-links {
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    text-align: left;
  }
  
  .footer-link-group h4 {
    font-size: 16px;
  }
  
  .footer-link-group a {
    font-size: 14px;
  }
  
  .contact-column {
    padding: 20px;
  }
  
  .contact-column h4 {
    font-size: 18px;
  }
  
  .contact-column p {
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .footer {
    padding: 40px 4% 20px;
  }
  
  .footer-logo h3 {
    font-size: 24px;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .contact-column {
    padding: 20px 15px;
  }
}

@media (max-width: 768px) {
  .main-menu {
    display: none;
  }
}

/* 固定位置联系图标样式 */
.contact-icons {
  position: fixed !important;
  top: 50% !important;
  right: 20px !important;
  bottom: auto !important;
  transform: translateY(-50%) !important;
  z-index: 99999 !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 15px !important;
  pointer-events: none !important;
  margin: 0 !important;
  padding: 0 !important;
  width: auto !important;
  height: auto !important;
}

.contact-icons > * {
  pointer-events: auto;
}

.contact-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: white;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  cursor: pointer;
  overflow: hidden;
  position: relative;
}

.contact-icon img {
  width: 28px;
  height: 28px;
  object-fit: contain;
  transition: transform 0.3s ease;
}

.contact-icon:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(52, 152, 219, 0.2);
}

.contact-icon:hover img {
  transform: scale(1.1);
}

.contact-icon::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(52, 152, 219, 0.1), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.contact-icon:hover::after {
  opacity: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
  .contact-icons {
    right: 10px;
  }
  
  .contact-icon {
    width: 50px;
    height: 50px;
  }
  
  .contact-icon img {
    width: 24px;
    height: 24px;
  }
}

/* 模态框样式 */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  z-index: 2000;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal.active {
  display: flex;
  opacity: 1;
}

.modal-content {
  position: relative;
  max-width: 90%;
  max-height: 90vh;
  background-color: white;
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
  cursor: default;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.modal.active .modal-content {
  transform: scale(1);
}

.modal-image {
  max-width: 100%;
  max-height: 70vh;
  display: block;
  margin: 0 auto;
}

.modal-close {
  position: absolute;
  top: 15px;
  right: 15px;
  width: 35px;
  height: 35px;
  background-color: rgba(255, 255, 255, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 24px;
  color: #333;
  transition: all 0.3s ease;
  border: none;
}

.modal-close:hover {
  background-color: white;
  transform: rotate(90deg);
}

/* 电话联系弹窗样式 */
.phone-content {
  width: 100%;
  min-width: 300px;
  max-width: 500px;
  display: flex;
  flex-direction: column;
}

.phone-header {
  background-color: white;
  padding: 20px 40px;
  text-align: center;
  border-radius: 12px 12px 0 0;
}

.phone-header h2 {
  font-size: 2.5rem;
  font-weight: bold;
  color: #2c52e5;
  margin: 0;
  letter-spacing: 1px;
}

.phone-body {
  background-color: #2c52e5;
  padding: 30px 40px;
  border-radius: 0 0 12px 12px;
  color: white;
}

.phone-body p {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 20px;
  margin-top: 0;
}

.phone-body ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.phone-body li {
  font-size: 1.1rem;
  margin-bottom: 15px;
  display: flex;
  align-items: flex-start;
  line-height: 1.5;
}

.phone-body li:last-child {
  margin-bottom: 0;
}

.phone-body li:before {
  content: '✓';
  margin-right: 10px;
  font-weight: bold;
  color: white;
  font-size: 1.3rem;
}