/* ============================================================================
 * Animations — 关键帧动画(去重) + 应用
 * 集中所有 @keyframes,避免在多文件中重复定义。
 * ============================================================================ */

/* 页面渐入 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
    filter: blur(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

/* 视图过渡(View Transitions API) */
@keyframes vtFadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

@keyframes vtFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

::view-transition-old(root) {
  animation: vtFadeOut 0.3s ease;
}

::view-transition-new(root) {
  animation: vtFadeIn 0.4s ease 0.05s;
}

/* Hero 与 Features 应用渐入动画 */
.dark :deep(.VPHero) {
  animation: fadeInUp 0.9s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.dark :deep(.VPHero .features) {
  animation: fadeInUp 1s cubic-bezier(0.34, 1.56, 0.64, 1) 0.25s both;
}