/* 基础样式 */
:root {
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary-color: #f8fafc;
  --text-color: #1e293b;
  --light-text: #64748b;
  --white: #ffffff;
}

body {
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  overflow-x: hidden;
}

/* 动画效果 */
.animate-fade-in {
  animation: fadeIn 1s ease-in-out;
}

.animate-float {
  animation: float 6s ease-in-out infinite;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
  100% {
    transform: translateY(0px);
  }
}

/* 导航栏样式 */
nav {
  transition: all 0.3s ease;
}

nav.scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(5px);
}

/* 按钮悬停效果 */
.btn-hover-effect {
  transition: all 0.3s ease;
}

.btn-hover-effect:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.2);
}

/* 卡片悬停效果 */
.card-hover {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-hover:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

/* 响应式调整 */
@media (max-width: 768px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  
  h1 {
    font-size: 2.25rem;
  }
  
  h2 {
    font-size: 1.875rem;
  }
  
  h3 {
    font-size: 1.5rem;
  }
}

/* 特殊效果 */
.text-gradient {
  background: linear-gradient(90deg, var(--primary-color), #3b82f6);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.glass-effect {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* 滚动效果 */
.scroll-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* 高亮文本 */
.highlight {
  position: relative;
  display: inline-block;
}

.highlight::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 30%;
  background-color: rgba(37, 99, 235, 0.2);
  z-index: -1;
  transform: rotate(-1deg);
}