/* 全局样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  scroll-behavior: smooth;
}

/* FAQ样式 */
.faq-toggle.active + .faq-content {
  display: block;
}

.faq-toggle.active i {
  transform: rotate(180deg);
}

.faq-toggle:hover {
  background-color: #f8f9fa;
}

/* 图片容器样式 */
img {
  max-width: 100%;
  height: auto;
}

/* 动画效果 */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.5s ease forwards;
}

/* 响应式调整 */
@media (max-width: 768px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  
  header nav {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .step-image {
    width: 100% !important;
    height: auto !important;
    max-height: 400px;
  }
}

/* 回到顶部按钮 */
#back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#back-to-top {
  transform: translateY(20px);
}

/* 按钮悬停效果增强 */
.btn-hover {
  position: relative;
  overflow: hidden;
}

.btn-hover: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 0.5s ease;
}

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

/* 卡片阴影效果 */
.card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

/* 防止内容被固定导航栏遮挡 */
section {
  scroll-margin-top: 80px;
}