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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'PingFang SC', 'Source Han Sans CN', 'Microsoft YaHei', sans-serif;
  background-color: #F8F8F8;
  color: #1A1A1A;
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'PingFang SC', 'Source Han Sans CN', 'Microsoft YaHei', sans-serif;
  font-weight: 500;
  letter-spacing: 0.02em;
}

a {
  text-decoration: none;
  color: #1A1A1A;
  transition: color 0.3s ease;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

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

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.hover-lift {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.hover-scale {
  transition: transform 0.3s ease;
}

.hover-scale:hover {
  transform: scale(1.02);
}

.btn {
  display: inline-block;
  padding: 12px 32px;
  border: 1px solid #E5E5E5;
  background: transparent;
  color: #1A1A1A;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn:hover {
  border-color: #9FA8C1;
  color: #9FA8C1;
}

.btn-primary {
  background: #1A1A1A;
  color: #FFFFFF;
  border-color: #1A1A1A;
}

.btn-primary:hover {
  background: #9FA8C1;
  border-color: #9FA8C1;
  color: #FFFFFF;
}

.section {
  padding: 100px 0;
}

.section-title {
  font-size: 32px;
  text-align: center;
  margin-bottom: 60px;
  font-weight: 400;
}

.text-secondary {
  color: #666666;
}

.text-accent {
  color: #9FA8C1;
}

.border-light {
  border-color: #E5E5E5;
}

.bg-white {
  background-color: #FFFFFF;
}

.bg-light {
  background-color: #F8F8F8;
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
  
  .section {
    padding: 60px 0;
  }
  
  .section-title {
    font-size: 24px;
    margin-bottom: 40px;
  }
}