/* 全局样式 */
:root {
  --primary-color: #1890ff;
  --secondary-color: #722ed1;
  --text-color: #333;
  --text-light: #666;
  --bg-color: #fff;
  --bg-light: #f5f7ff;
  --border-radius: 8px;
  --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  --transition: all 0.3s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-color);
  line-height: 1.6;
  background-color: var(--bg-color);
}

h1,
h2,
h3,
h4 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

p {
  margin-bottom: 1rem;
  color: var(--text-light);
}

a {
  text-decoration: none;
  color: var(--primary-color);
  transition: var(--transition);
}

a:hover {
  color: var(--secondary-color);
}

section {
  padding: 4rem 0;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

.section-subtitle {
  text-align: center;
  font-size: 1.125rem;
  color: var(--text-light);
  margin-bottom: 3rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* 联系英雄区域 */
.contact-hero {
  background: linear-gradient(135deg, var(--bg-light), rgba(255, 255, 255, 0.8));
  padding: 6rem 0 4rem;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.contact-hero h1 {
  font-size: 3rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 1rem;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-light);
  margin-bottom: 0;
}

/* 联系信息区域 */
.contact-info {
  background-color: var(--bg-color);
  padding: 4rem 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.contact-card {
  background-color: white;
  padding: 2.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  text-align: center;
}

.contact-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.contact-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  color: white;
}

.contact-icon i {
  font-size: 2rem;
}

.contact-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-color);
}

.contact-desc {
  color: var(--text-light);
  margin-bottom: 1.5rem;
  font-size: 1rem;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary-color);
  font-weight: 600;
  font-size: 1.125rem;
  transition: var(--transition);
}

.contact-link:hover {
  color: var(--secondary-color);
  gap: 0.75rem;
}

.contact-link i {
  transition: var(--transition);
}

.contact-link:hover i {
  transform: translateX(5px);
}

.contact-detail {
  text-align: left;
  margin-top: 1rem;
}

.contact-detail p {
  margin-bottom: 0.5rem;
  color: var(--text-color);
}

.contact-detail strong {
  color: var(--text-color);
  font-weight: 600;
}

/* 联系表单区域 */
.contact-form-section {
  background-color: var(--bg-light);
  padding: 4rem 0;
}

.contact-form-section h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.contact-form {
  max-width: 800px;
  margin: 0 auto;
  background-color: white;
  padding: 3rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-color);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 2px solid #e0e0e0;
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition);
  background-color: var(--bg-color);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(24, 144, 255, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 150px;
}

.form-actions {
  text-align: center;
  margin-top: 2rem;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-size: 1rem;
}

.btn.primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
}

.btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(24, 144, 255, 0.3);
}

.btn.large {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

/* FAQ区域 */
.faq-section {
  background-color: var(--bg-color);
  padding: 4rem 0;
}

.faq-section h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.faq-list {
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  background-color: white;
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
  box-shadow: var(--box-shadow);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.faq-question {
  padding: 1.5rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.faq-question:hover {
  background-color: var(--bg-light);
}

.faq-question h3 {
  font-size: 1.125rem;
  margin: 0;
  color: var(--text-color);
  flex: 1;
}

.faq-question i {
  color: var(--primary-color);
  font-size: 1.25rem;
  transition: var(--transition);
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding: 0 1.5rem;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 1.5rem 1.5rem;
}

.faq-answer p {
  color: var(--text-light);
  line-height: 1.8;
  margin: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .contact-hero h1 {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1.125rem;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .contact-card {
    padding: 2rem;
  }

  .contact-form {
    padding: 2rem 1.5rem;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .faq-question h3 {
    font-size: 1rem;
  }

  .contact-form-section h2,
  .faq-section h2 {
    font-size: 2rem;
  }
}