/* ============ 滚动渐显 ============ */
.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 0.7s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

.reveal[data-delay="1"] {
  transition-delay: 0.08s;
}

.reveal[data-delay="2"] {
  transition-delay: 0.16s;
}

.reveal[data-delay="3"] {
  transition-delay: 0.24s;
}

.reveal[data-delay="4"] {
  transition-delay: 0.32s;
}

/* ============ 关键帧 ============ */
@keyframes scroll-x {
  to {
    transform: translateX(-50%);
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0) rotate(-1deg);
  }
  50% {
    transform: translateY(-16px) rotate(1deg);
  }
}

@keyframes blink {
  0%,
  92%,
  100% {
    transform: scaleY(1);
  }
  96% {
    transform: scaleY(0.1);
  }
}

@keyframes rise {
  0% {
    opacity: 0;
    transform: translateY(10px) scaleY(0.7);
  }
  30% {
    opacity: 0.55;
  }
  100% {
    opacity: 0;
    transform: translateY(-46px) scaleY(1.1);
  }
}

@keyframes wheel {
  0% {
    opacity: 0;
    transform: translate(-50%, 0);
  }
  40% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translate(-50%, 12px);
  }
}

/* 尊重减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}