body {
    font-family: 'Noto Sans SC', sans-serif;
}
html {
    scroll-behavior: smooth;
}
.nav-link {
    position: relative;
    font-size: 20px;
    padding: 0 10px;
}
.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background-color: #f9e216;
    transition: width 0.3s ease;
}
.nav-link:hover::after {
    width: 100%;
}
/* 卡片悬停效果 */
.card-hover {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.card-hover:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}
/* 按钮动画 */
.btn-primary {
    transition: all 0.3s ease;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}
/* 加载动画 */
.loader {
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top: 4px solid #3b82f6;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}