/* 区块进入视口前的初始状态 */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

/* 区块进入视口后的可见状态 */
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* 页面初始加载遮罩 */
.page-loader {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: #ffffff;
  z-index: 100;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

/* Loader 隐藏态（由 JS 切换） */
.page-loader--hidden {
  opacity: 0;
  visibility: hidden;
}

/* Loader 中的 Logo 动画样式 */
.page-loader__logo {
  width: 138px;
  min-width: 120px;
  padding: 12px;
  border-radius: 14px;
  animation: logo-pulse 0.9s ease-in-out infinite alternate;
}

/* Logo 呼吸动画 */
@keyframes logo-pulse {
  from {
    transform: translateY(0);
    box-shadow: 0 6px 16px rgba(10, 59, 122, 0.15);
  }
  to {
    transform: translateY(-2px);
    box-shadow: 0 10px 18px rgba(212, 175, 55, 0.28);
  }
}

/* 减少动态偏好：关闭大部分动效，提升可访问性 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}