.main-content {
  margin-top: 80px;
  /* 为固定头部预留空间 */
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-title {
  font-size: 2.5rem;
  color: #1e3c72;
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
  margin: 1rem auto;
}

/* 页面标题横幅 */
.page-banner {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  text-align: center;
  padding: 6rem 0;
}

.page-title {
  font-size: 3rem;
  font-weight: bold;
  margin-bottom: 1rem;
}

.page-subtitle {
  font-size: 1.2rem;
  opacity: 0.9;
}


.intro-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.intro-text h2 {
  font-size: 2.5rem;
  color: #1e3c72;
  margin-bottom: 1rem;
}

.intro-highlight {
  font-size: 1.5rem;
  color: #2a5298;
  margin-bottom: 2rem;
  font-weight: 600;
}

.intro-description {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #555;
  margin-bottom: 3rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 3rem;
  font-weight: bold;
  color: #1e3c72;
  margin-bottom: 0.5rem;
}

.stat-number::after {
  content: '+';
}

.stat-label {
  font-size: 1rem;
  color: #666;
  font-weight: 500;
}

.intro-image {
  text-align: center;
}

.company-image {
  max-width: 100%;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* 服务理念 */
.service-philosophy {
  padding: 5rem 0;
}

.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.philosophy-item {
  text-align: center;
  padding: 2rem;
  background: white;
  border-radius: 15px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.philosophy-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.philosophy-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: white;
}

.philosophy-item h3 {
  font-size: 1.3rem;
  color: #1e3c72;
  margin-bottom: 1rem;
}

.philosophy-item p {
  color: #666;
  line-height: 1.6;
}

/* 客户案例 */
.client-cases {
  padding: 5rem 0;
  background: #f8f9fa;
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.case-item {
  background: white;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease;
}

.case-item:hover {
  transform: translateY(-5px);
}

.case-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.case-header h3 {
  color: #1e3c72;
  font-size: 1.3rem;
}

.case-tag {
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
  color: white;
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.8rem;
}

.case-description {
  color: #666;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.case-results {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.result-item {
  background: #e3f2fd;
  color: #1976d2;
  padding: 0.3rem 0.8rem;
  border-radius: 15px;
  font-size: 0.9rem;
}

/* 屿辰出海优势 */
.advantages {
  padding: 5rem 0;
}

.advantages-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: 2rem;
}

.advantage-item {
  display: flex;
  gap: 1.5rem;
  padding: 1.5rem;
  background: white;
  border-radius: 15px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease;
}

.advantage-item:hover {
  transform: translateY(-3px);
}

.advantage-number {
  font-size: 2rem;
  font-weight: bold;
  color: white;
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.advantage-content h3 {
  color: #1e3c72;
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.advantage-content p {
  color: #666;
  line-height: 1.6;
}

/* 联系我们 */
.contact-us {
  padding: 5rem 0;
  background: #f8f9fa;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-bottom: 3rem;
}

.contact-info h3 {
  color: #1e3c72;
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.contact-info>p {
  color: #666;
  margin-bottom: 2rem;
  font-size: 1.1rem;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
}

.contact-details h4 {
  color: #1e3c72;
  margin-bottom: 0.3rem;
}

.contact-details p {
  color: #666;
}

/* 联系表单 */
.contact-form {
  background: white;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.contact-form h3 {
  color: #1e3c72;
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.8rem;
  border: 2px solid #e9ecef;
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #2a5298;
}

.submit-btn {
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.submit-btn:hover {
  transform: translateY(-2px);
}


.qr-codes {
  display: flex;
  justify-content: center;
  gap: 2rem;
}

.qr-item {
  text-align: center;
}

.qr-item img {
  width: 120px;
  height: 120px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  margin-bottom: 0.5rem;
}

.qr-item p {
  color: #666;
  font-weight: 500;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .page-title {
    font-size: 2rem;
  }

  .intro-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .stats-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .philosophy-grid {
    grid-template-columns: 1fr;
  }

  .cases-grid {
    grid-template-columns: 1fr;
  }

  .advantages-content {
    grid-template-columns: 1fr;
  }

  .contact-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .case-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .advantage-item {
    flex-direction: column;
    text-align: center;
  }

  .contact-item {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }

  .page-banner {
    padding: 2rem 0;
  }

  .company-intro,
  .service-philosophy,
  .client-cases,
  .advantages,
  .contact-us {
    padding: 3rem 0;
  }

  .section-title {
    font-size: 2rem;
  }

  .stat-number {
    font-size: 2rem;
  }
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fadeInUp {
  animation: fadeInUp 0.6s ease-out;
}

@keyframes countUp {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.animate-countUp {
  animation: countUp 0.5s ease-out;
}