/* 基础样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Arial', sans-serif;
}

body {
  color: #333;
  background-color: #f9fafb;
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

a {
  text-decoration: none;
  color: inherit;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 6px;
  font-weight: 600;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: all 0.6s ease;
}

.btn:hover::after {
  left: 100%;
}

.btn-primary {
  background-color: #165DFF;
  color: white;
  border: none;
}

.btn-primary:hover {
  background-color: #0E4CD1;
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(22, 93, 255, 0.3);
}

.btn-secondary {
  background-color: transparent;
  color: white;
  border: 1px solid white;
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.section {
  padding: 80px 0;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 15px;
  text-align: center;
  position: relative;
  display: inline-block;
  left: 50%;
  transform: translateX(-50%);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background-color: #165DFF;
  transition: width 0.3s ease;
}

.section:hover .section-title::after {
  width: 80px;
}

.section-desc {
  font-size: 16px;
  color: #667085;
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}

.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.scroll-reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.hover-lift {
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.hover-lift:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

/* 响应式基础样式 */
@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }
  
  .section-title {
    font-size: 26px;
  }
}

@media (max-width: 576px) {
  .section-title {
    font-size: 24px;
  }
}