/* === 关于我们页面专用样式 === */
:root {
  --max: 1100px;
  --radius: 12px;
  --tb-primary: linear-gradient(135deg, #456df0 0%, #a06ce8 35%, #fc60aa 70%, #ff456c 100%);
  --tb-dark: #111;
  --tb-gray: #1a1a1a;
  --tb-light: #333;
  --tb-white: #fff;
  --header-gradient: linear-gradient(135deg, #456df0 0%, #ff456c 75%);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", sans-serif;
  line-height: 1.6;
  background-color: var(--tb-dark);
  color: var(--tb-white);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 20px;
}

/* 头部样式 */
header {
  background: var(--header-gradient);
  color: var(--tb-white);
  padding: clamp(30px, 5vw, 50px) 20px;
  text-align: center;
  margin-bottom: 30px;
}

.back-home a {
  color: var(--tb-white);
  text-decoration: none;
  font-weight: bold;
  display: inline-block;
  margin-bottom: 15px;
}

/* 服务介绍区域 */
.service-intro {
  background-color: rgba(255, 255, 255, 0.05);
  padding: 25px;
  border-radius: var(--radius);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  margin: 20px auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.service-intro h1 {
  text-align: center;
  margin-bottom: 15px;
}

.service-intro-content {
  text-align: left;
  width: 100%;
  max-width: 800px;
}

.service-intro-content h3 {
  color: var(--tb-white);
  margin: 25px 0 15px 0;
  font-size: 1.2em;
}

.service-intro-content ul {
  color: #ccc;
  margin: 15px 0;
  padding-left: 20px;
}

.service-intro-content li {
  margin-bottom: 8px;
  line-height: 1.6;
}

/* 团队展示区域 */
.team-showcase {
  margin: 50px 0;
  text-align: center;
}

.team-showcase h2 {
  margin-bottom: 30px;
  color: var(--tb-white);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 30px;
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-item {
  background: rgba(255, 255, 255, 0.05);
  padding: 25px 15px;
  border-radius: var(--radius);
  transition: transform 0.3s ease;
}

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

.stat-number {
  font-size: 2.2em;
  font-weight: bold;
  background: var(--tb-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 10px;
  display: block;
}

.stat-label {
  color: #ccc;
  font-size: 0.9em;
}

/* 联系按钮区域 */
.contact-section {
  text-align: center;
  margin: 40px 0;
}

.contact-section h2 {
  margin-bottom: 20px;
  color: var(--tb-white);
}

.contact-btn {
  background: var(--tb-primary);
  color: white;
  padding: 12px 30px;
  text-decoration: none;
  border-radius: 30px;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(255, 80, 0, 0.35);
  transition: opacity 0.3s, transform 0.3s;
  display: inline-block;
}

.contact-btn:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

/* 页脚 */
footer {
  background-color: var(--tb-gray);
  color: #aaa;
  padding: 20px;
  text-align: center;
  margin-top: auto;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
  
  .stat-item {
    padding: 20px 10px;
  }
  
  .stat-number {
    font-size: 1.8em;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .service-intro {
    padding: 20px 15px;
  }
}