/* 全局样式 */
:root {
  --primary-color: #3a7bd5;
  --primary-light: #e1ecff;
  --primary-dark: #1e5cb3;
  --secondary-color: #6c757d;
  --light-color: #f8f9fa;
  --dark-color: #212529;
  --success-color: #28a745;
  --info-color: #17a2b8;
  --warning-color: #ffc107;
  --danger-color: #dc3545;
  --border-radius: 8px;
  --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
  color: var(--dark-color);
  line-height: 1.6;
  background-color: #fff;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

section {
  padding: 80px 0;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
  text-align: center;
  color: var(--primary-dark);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--secondary-color);
  text-align: center;
  margin-bottom: 3rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-outline:hover {
  background-color: var(--primary-light);
  transform: translateY(-2px);
}

/* 轮播图样式 */
.hero-slider {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.slider-container {
  position: relative;
  height: 600px;
}

.slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease;
}

.slide.active {
  opacity: 1;
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.slide-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: white;
  width: 100%;
  max-width: 800px;
  padding: 0 20px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.slide-content h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.slide-content p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
}

.slider-controls {
  position: absolute;
  bottom: 40px;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
}

.slider-controls button {
  background: rgba(255, 255, 255, 0.3);
  border: none;
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  font-size: 1.25rem;
}

.slider-controls button:hover {
  background: rgba(255, 255, 255, 0.5);
}

.slider-dots {
  display: flex;
  gap: 10px;
}

.slider-dots .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: var(--transition);
}

.slider-dots .dot.active {
  background: white;
  transform: scale(1.2);
}

/* 产品价值区域 */
.product-value {
  background-color: var(--light-color);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.value-card {
  background: white;
  padding: 30px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  text-align: center;
  transition: var(--transition);
}

.value-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.value-icon {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 1.5rem;
}

.value-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--primary-dark);
}

/* 功能模块区域 */
.module-tabs {
  display: flex;
  justify-content: center;
  margin-bottom: 40px;
  gap: 10px;
}

.tab-btn {
  padding: 12px 24px;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  font-size: 1rem;
  font-weight: 600;
  color: var(--secondary-color);
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

.tab-btn:hover:not(.active) {
  color: var(--primary-dark);
}

.module-content {
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  overflow: hidden;
}

.tab-panel {
  display: none;
  padding: 40px;
}

.tab-panel.active {
  display: flex;
  gap: 40px;
  align-items: center;
}

.module-info {
  flex: 1;
}

.module-info h3 {
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  color: var(--primary-dark);
}

.module-info p {
  margin-bottom: 1.5rem;
  color: var(--secondary-color);
}

.module-info ul {
  margin-bottom: 2rem;
  list-style: none;
}

.module-info li {
  margin-bottom: 0.75rem;
  display: flex;
  align-items: flex-start;
}

.module-info li i {
  color: var(--primary-color);
  margin-right: 10px;
  margin-top: 3px;
}

.module-image {
  flex: 1;
}

.module-image img {
  width: 100%;
  border-radius: var(--border-radius);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* 客户案例区域 */
.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.case-card {
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  overflow: hidden;
  transition: var(--transition);
}

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

.case-logo {
  padding: 30px;
  background: var(--light-color);
  display: flex;
  justify-content: center;
  align-items: center;
}

.case-logo img {
  max-height: 80px;
  max-width: 100%;
}

.case-content {
  padding: 30px;
}

.case-content h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--primary-dark);
}

.case-content p {
  font-style: italic;
  margin-bottom: 1.5rem;
  color: var(--secondary-color);
}

.case-stats {
  display: flex;
  gap: 20px;
  margin-top: 20px;
}

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

.stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--secondary-color);
}

/* 新闻动态区域 */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.news-card {
  background: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

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

.news-image img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.news-content {
  padding: 20px;
}

.news-content time {
  font-size: 0.875rem;
  color: var(--secondary-color);
  display: block;
  margin-bottom: 0.5rem;
}

.news-content h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--primary-dark);
}

.news-content p {
  margin-bottom: 1.5rem;
  color: var(--secondary-color);
}

.read-more {
  color: var(--primary-color);
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: var(--transition);
}

.read-more:hover {
  color: var(--primary-dark);
  gap: 10px;
}

.news-cta {
  text-align: center;
  margin-top: 40px;
}

/* 联系表单区域 */
.contact-form {
  background-color: var(--light-color);
}

.form-container {
  display: flex;
  gap: 40px;
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  overflow: hidden;
}

.form-info {
  flex: 1;
  padding: 40px;
  background: var(--primary-light);
  color: var(--primary-dark);
}

.form-info h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.form-info p {
  margin-bottom: 2rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 1rem;
}

.contact-item i {
  font-size: 1.25rem;
}

.form-content {
  flex: 1;
  padding: 40px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--primary-dark);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(58, 123, 213, 0.2);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* 响应式设计 */
@media (max-width: 992px) {
  .slide-content h1 {
    font-size: 2.5rem;
  }
  
  .slide-content p {
    font-size: 1.1rem;
  }
  
  .tab-panel.active {
    flex-direction: column;
  }
  
  .form-container {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  section {
    padding: 60px 0;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .slider-container {
    height: 500px;
  }
  
  .slide-content h1 {
    font-size: 2rem;
  }
  
  .module-tabs {
    flex-wrap: wrap;
  }
}

@media (max-width: 576px) {
  .section-title {
    font-size: 1.5rem;
  }
  
  .slider-container {
    height: 400px;
  }
  
  .slide-content h1 {
    font-size: 1.75rem;
  }
  
  .slide-content p {
    font-size: 1rem;
  }
  
  .btn {
    padding: 10px 20px;
  }
}