/* About页面专用样式 */
:root {
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --shadow-soft: 0 10px 40px rgba(0,0,0,0.1);
  --shadow-hover: 0 20px 60px rgba(0,0,0,0.15);
  --border-radius: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  line-height: 1.6;
  color: #2d3748;
}

/* 页面头部横幅 */
.page-hero {
  background: var(--primary-gradient);
  color: white;
  padding: 4rem 0 2rem;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.1"/><circle cx="10" cy="60" r="0.5" fill="white" opacity="0.1"/><circle cx="90" cy="40" r="0.5" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  opacity: 0.3;
}

.page-hero-content {
  position: relative;
  z-index: 1;
}

.page-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.page-subtitle {
  font-size: 1.25rem;
  opacity: 0.9;
  margin-bottom: 2rem;
}

/* 面包屑导航现代化 */
.breadcrumb-modern {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius);
  padding: 1rem 1.5rem;
  margin: -2rem auto 0;
  max-width: 600px;
  box-shadow: var(--shadow-soft);
  position: relative;
  z-index: 2;
}

.breadcrumb-modern .breadcrumb {
  margin: 0;
  background: none;
  padding: 0;
}

.breadcrumb-modern .breadcrumb-item {
  font-weight: 500;
}

.breadcrumb-modern .breadcrumb-item + .breadcrumb-item::before {
  content: "›";
  color: #667eea;
  font-weight: bold;
}

/* 主要内容区域 */
.main-content {
  padding: 4rem 0;
}

.content-card {
  background: white;
  border-radius: var(--border-radius);
  padding: 3rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(0,0,0,0.05);
  margin-bottom: 2rem;
  transition: var(--transition);
}

.content-card:hover {
  box-shadow: var(--shadow-hover);
}

.content-card h1, .content-card h2, .content-card h3 {
  color: #2d3748;
  margin-bottom: 1.5rem;
  position: relative;
}

.content-card h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 60px;
  height: 3px;
  background: var(--primary-gradient);
  border-radius: 2px;
}

.content-card p {
  margin-bottom: 1.5rem;
  color: #4a5568;
  line-height: 1.8;
}

/* 联系信息卡片 */
.contact-card {
  background: white;
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(0,0,0,0.05);
  position: sticky;
  top: 2rem;
  transition: var(--transition);
}

.contact-card:hover {
  box-shadow: var(--shadow-hover);
}

.contact-card h5 {
  color: #2d3748;
  font-weight: 700;
  margin-bottom: 2rem;
  text-align: center;
  position: relative;
}

.contact-card h5::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  background: var(--secondary-gradient);
  border-radius: 2px;
}

.contact-item {
  display: flex;
  align-items: center;
  padding: 1.5rem;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border-radius: var(--border-radius);
  transition: var(--transition);
  border: 1px solid rgba(0,0,0,0.05);
}

.contact-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
  background: white;
}

.contact-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 1rem;
  font-size: 1.25rem;
  color: white;
  flex-shrink: 0;
}

.contact-icon.phone {
  background: var(--success-gradient);
}

.contact-icon.email {
  background: var(--secondary-gradient);
}

.contact-icon.address {
  background: var(--primary-gradient);
}

.contact-content {
  flex: 1;
}

.contact-title {
  font-weight: 600;
  color: #2d3748;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.contact-value {
  color: #4a5568;
  font-size: 1rem;
  text-decoration: none;
  transition: var(--transition);
}

.contact-value:hover {
  color: #667eea;
}

/* 按钮样式 */
.btn-gradient {
  background: var(--primary-gradient);
  border: none;
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-gradient:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
  color: white;
}

.btn-outline-primary {
  border: 2px solid #667eea;
  color: #667eea;
  background: transparent;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  transition: var(--transition);
}

.btn-outline-primary:hover {
  background: #667eea;
  color: white;
  transform: translateY(-2px);
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* 响应式优化 */
@media (max-width: 768px) {
  .page-title {
    font-size: 2rem;
  }
  
  .page-subtitle {
    font-size: 1rem;
  }
  
  .content-card {
    padding: 2rem 1.5rem;
  }
  
  .contact-card {
    margin-top: 2rem;
    position: static;
  }
  
  .contact-item {
    padding: 1rem;
  }
  
  .contact-icon {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }
}

/* 内容样式增强 */
.content-card img {
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-soft);
  margin: 1.5rem 0;
  max-width: 100%;
  height: auto;
}

.content-card ul, .content-card ol {
  padding-left: 1.5rem;
  margin-bottom: 1.5rem;
}

.content-card li {
  margin-bottom: 0.5rem;
  color: #4a5568;
}

.content-card blockquote {
  border-left: 4px solid #667eea;
  padding-left: 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  color: #4a5568;
  background: #f8f9fa;
  padding: 1.5rem;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
}