@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.fade-in {
    animation: fadeIn 1s ease-in;
}

.slide-in {
    animation: slideIn 0.5s ease-out;
}

/* 社交媒体图标悬停效果 */
.social-links a {
    transition: transform 0.3s ease;
}

.social-links a:hover {
    transform: translateY(-3px);
}