/* 基础样式 */
:root {
  --primary-color: #3A86FF;
  --primary-light: #E6F0FF;
  --secondary-color: #6C757D;
  --accent-color: #FF9F1C;
  --light-color: #F8F9FA;
  --dark-color: #212529;
  --success-color: #28A745;
  --warning-color: #FFC107;
  --danger-color: #DC3545;
  --border-radius: 8px;
  --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

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

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

h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }

p {
  margin-bottom: 1rem;
  font-size: 1rem;
}

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

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul {
  list-style-position: inside;
  margin-bottom: 1rem;
}

/* 布局样式 */
.solution-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.section-title {
  text-align: center;
  margin-bottom: 1rem;
  color: var(--dark-color);
  position: relative;
  padding-bottom: 1rem;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background-color: var(--primary-color);
}

.section-description {
  text-align: center;
  margin-bottom: 2rem;
  color: var(--secondary-color);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* 英雄区域 */
.hero-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  margin-bottom: 4rem;
  padding: 2rem 0;
}

.hero-content {
  text-align: center;
  max-width: 800px;
}

.hero-content h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--dark-color);
}

.subtitle {
  font-size: 1.25rem;
  color: var(--secondary-color);
  margin-bottom: 2rem;
}

.hero-image {
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
}

/* 解决方案标签页 */
.solution-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.tab-btn {
  padding: 0.75rem 1.5rem;
  background-color: var(--light-color);
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
  color: var(--secondary-color);
}

.tab-btn:hover {
  background-color: var(--primary-light);
  color: var(--primary-color);
}

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

.tab-content {
  display: none;
  animation: fadeIn 0.5s ease;
}

.tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 解决方案卡片 */
.solution-card {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  background-color: white;
  border-radius: var(--border-radius);
  padding: 2rem;
  margin-bottom: 3rem;
  box-shadow: var(--box-shadow);
}

.solution-info h3 {
  color: var(--primary-color);
  margin-bottom: 1.5rem;
}

.pain-points, .our-solution {
  margin-bottom: 1.5rem;
}

.pain-points h4, .our-solution h4 {
  color: var(--dark-color);
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
}

.pain-points ul, .our-solution ul {
  list-style-type: none;
}

.pain-points li, .our-solution li {
  margin-bottom: 0.5rem;
  padding-left: 1.5rem;
  position: relative;
}

.pain-points li::before, .our-solution li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.pain-points li::before {
  background-color: var(--danger-color);
}

.our-solution li::before {
  background-color: var(--success-color);
}

.solution-image {
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
}

/* 成功案例 */
.case-studies {
  margin-bottom: 3rem;
}

.case-studies h3 {
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  text-align: center;
}

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

.case-card {
  background-color: white;
  border-radius: var(--border-radius);
  padding: 1.5rem;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

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

.case-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.case-header i {
  font-size: 1.5rem;
  color: var(--primary-color);
}

/* 客户评价 */
.testimonials-section {
  margin-bottom: 4rem;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}

.testimonial-card {
  background-color: white;
  border-radius: var(--border-radius);
  padding: 1.5rem;
  box-shadow: var(--box-shadow);
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
}

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

.testimonial-text {
  font-style: italic;
  margin-bottom: 1rem;
}

.rating {
  color: var(--accent-color);
}

/* CTA区域 */
.cta-section {
  text-align: center;
  padding: 3rem 1rem;
  background-color: var(--primary-light);
  border-radius: var(--border-radius);
  margin-bottom: 3rem;
}

.cta-section h2 {
  margin-bottom: 1rem;
}

.cta-section p {
  margin-bottom: 2rem;
  color: var(--secondary-color);
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* 按钮样式 */
.cta-button {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 500;
  transition: var(--transition);
}

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

.cta-button.primary:hover {
  background-color: #2A75E5;
  transform: translateY(-2px);
}

.cta-button.secondary {
  background-color: white;
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
}

.cta-button.secondary:hover {
  background-color: var(--primary-light);
  transform: translateY(-2px);
}

/* 响应式设计 */
@media (min-width: 768px) {
  .hero-section {
    flex-direction: row;
    text-align: left;
    align-items: center;
  }
  
  .hero-content {
    text-align: left;
    flex: 1;
  }
  
  .hero-image {
    flex: 1;
  }
  
  .solution-card {
    flex-direction: row;
  }
  
  .solution-info {
    flex: 1;
  }
  
  .solution-image {
    flex: 1;
  }
  
  .case-grid, .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .hero-content h1 {
    font-size: 3rem;
  }
  
  .subtitle {
    font-size: 1.5rem;
  }
}