@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.animate-fade-in {
  animation: fade-in 0.3s ease-out;
}

/* 模型选择器样式已迁移至 css/ai-model-selector.css（公共组件） */