/* 品牌动画与辅助样式 */

html {
  scroll-behavior: smooth;
}

/* 慢速旋转动画 */
@keyframes spin-slow {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.animate-spin-slow {
  animation: spin-slow 30s linear infinite;
}

/* 滚动显示动画 */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* 导航激活态 */
.nav-scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  background-color: rgba(255, 255, 255, 0.95) !important;
}

/* 图片保持清晰 */
img {
  max-width: 100%;
  height: auto;
}

/* 表单占位符颜色统一 */
input::placeholder,
textarea::placeholder {
  color: #a8a29e;
}

/* 移动端菜单过渡 */
#mobileMenu {
  transition: all 0.2s ease-in-out;
}