/* 自定义样式 */
.logo-placeholder {
    width: 120px;
    height: 40px;
    background-color: #e5e7eb;
    border-radius: 4px;
}

/* 导航链接样式 */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background-color: currentColor;
    transition: width 0.3s;
}

.nav-link:hover::after {
    width: 100%;
}

/* 活跃链接样式 */
.nav-link.active::after {
    width: 100%;
}