/* 全局样式设置 */
:root {
  --primary-color: #0052FF;
  --secondary-color: #FF6B00;
  --dark-gray: #1F2937;
  --medium-gray: #6B7280;
  --light-gray: #F3F4F6;
  --white: #FFFFFF;
}

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

body {
  font-family: 'Noto Sans SC', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--dark-gray);
  background-color: var(--white);
}

/* 导航栏样式 */
#navbar.scrolled {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

/* 数据可视化背景 */
#visualization-bg {
  background-image: radial-gradient(var(--primary-color) 1px, transparent 1px);
  background-size: 30px 30px;
  animation: moveBackground 30s linear infinite;
}

/* ICP备案号链接样式 */
footer .border-t a {
  color: inherit; /* 继承父元素颜色 */
  text-decoration: none;
  transition: color 0.3s ease;
}

footer .border-t a:hover {
  color: var(--primary-color); /* 鼠标悬停时变为主题色 */
}

@keyframes moveBackground {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 300px 300px;
  }
}

#cta-bg {
  background-image: radial-gradient(var(--white) 1px, transparent 1px);
  background-size: 20px 20px;
  animation: moveBackground 20s linear infinite reverse;
}

/* 卡片悬停效果 */
.feature-card {
  transition: all 0.3s ease;
}

.feature-card:hover {
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.feature-card:hover .w-12 {
  background-color: rgba(0, 82, 255, 0.2);
}

/* 按钮样式 */
.btn-primary {
  background-color: var(--primary-color);
  color: var(--white);
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background-color: #0041cc;
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--white);
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.btn-secondary:hover {
  background-color: var(--primary-color);
  color: var(--white);
}

/* 响应式调整 */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem !important;
  }
  
  h2 {
    font-size: 1.75rem !important;
  }
  
  .feature-card {
    padding: 1rem;
  }
  
  .grid-cols-3 {
    grid-template-columns: 1fr;
  }
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.8s ease forwards;
}

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

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

/* 加载动画 */
.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(0, 82, 255, 0.1);
  border-radius: 50%;
  border-top-color: var(--primary-color);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* 表单样式 */
.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid #D1D5DB;
  border-radius: 0.5rem;
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 82, 255, 0.1);
}

/* 进度条 */
.progress-bar {
  height: 4px;
  background-color: #E5E7EB;
  border-radius: 2px;
  overflow: hidden;
}

.progress-value {
  height: 100%;
  background-color: var(--primary-color);
  transition: width 0.5s ease;
}

/* 卡片阴影效果 */
.card-shadow {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.card-shadow-hover {
  transition: all 0.3s ease;
}

.card-shadow-hover:hover {
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  transform: translateY(-2px);
}

/* 数字计数动画 */
.countup {
  counter-reset: count var(--start-count);
  animation: countup 2s forwards ease-out;
}

@keyframes countup {
  to {
    counter-reset: count var(--end-count);
  }
}

.countup::after {
  content: counter(count);
}

/* 平滑滚动 */
html {
  scroll-behavior: smooth;
}

/* 移动端菜单动画 */
@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#mobile-menu.active {
  display: block;
  animation: slideDown 0.3s ease forwards;
}