/* 滚动揭示、动效工具类 */
.hm-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.7s var(--hm-ease),
    transform 0.7s var(--hm-ease);
}

.hm-reveal.hm-reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

.hm-reveal--left {
  transform: translateX(-32px);
}

.hm-reveal--left.hm-reveal--visible {
  transform: translateX(0);
}

.hm-reveal--scale {
  transform: scale(0.96);
}

.hm-reveal--scale.hm-reveal--visible {
  transform: scale(1);
}

.hm-stagger > *:nth-child(1) { transition-delay: 0.05s; }
.hm-stagger > *:nth-child(2) { transition-delay: 0.1s; }
.hm-stagger > *:nth-child(3) { transition-delay: 0.15s; }
.hm-stagger > *:nth-child(4) { transition-delay: 0.2s; }
.hm-stagger > *:nth-child(5) { transition-delay: 0.25s; }
.hm-stagger > *:nth-child(6) { transition-delay: 0.3s; }

@keyframes hm-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.hm-float {
  animation: hm-float 5s ease-in-out infinite;
}

@keyframes hm-wave {
  0% { transform: translateX(0) translateZ(0); }
  100% { transform: translateX(-50%) translateZ(0); }
}

.hm-hero-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 200%;
  height: 120px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120' preserveAspectRatio='none'%3E%3Cpath fill='%23f6f6f5' d='M0,60 C300,120 600,0 900,60 C1050,90 1150,80 1200,70 L1200,120 L0,120 Z'/%3E%3C/svg%3E") repeat-x;
  background-size: 1200px 120px;
  animation: hm-wave 18s linear infinite;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .hm-reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .hm-float { animation: none; }
  .hm-hero-wave { animation: none; }
}