.sm-nav li {
    display: grid;
    grid-template:
        "link link-split-toggler" auto
        "sub sub" auto/1fr auto;
    position: relative;
    list-style: none;
    margin: 0;
    padding: 0;
    line-height: inherit;
}

.sm-nav li a {
    grid-area: link / link / link / link-split-toggler;
    border-radius: var(--sm-dropdowns-nav-link-border-radius);
    padding: var(--sm-dropdowns-nav-link-padding-y) var(--sm-dropdowns-nav-link-padding-x);
    background: var(--sm-dropdowns-nav-link-bg);
    color: var(--sm-dropdowns-nav-link-color);
    font-family: var(--sm-font-family);
    font-size: var(--sm-font-size);
    font-weight: var(--sm-dropdowns-nav-link-font-weight);
    line-height: var(--sm-line-height);
    text-decoration: none;
}

.sm-nav li a:hover {
    color: #EF711D;
}

/* 分页样式 */

#pagi {
    text-align: center;
    margin: 20px 0;
}

#pagi a,
#pagi b {
    border-radius: 10px;
    display: inline-block;
    padding: 5px 10px;
    margin: 0 5px;
    border: 1px solid #ddd;
    text-decoration: none;
}

#pagi a:hover {
    background-color: #f5f5f5;
}

.zit {
    background-color: #007bff;
    color: white;
    border-color: #007bff;
}

/* 上一章文章下一章文章导航 */
.article-nav {
    display: flex;
    justify-content: space-between;
    /* margin: 40px 0; */
    margin-top: 20px;
    padding: 20px 0;
    border-top: 1px solid #eee;
    border-bottom: 1px solid #eee;
}

.nav-item {
    flex: 1;
    display: flex;
    align-items: center;
    padding: 0 20px;
    text-decoration: none;
    color: #333;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.nav-item:hover {
    color: #1890ff;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: #1890ff;
    transition: width 0.3s ease;
}

.nav-item:hover::before {
    width: 100%;
}

.nav-item.prev {
    text-align: left;
}

.nav-item.next {
    text-align: right;
    flex-direction: row-reverse;
}

.nav-icon {
    font-size: 24px;
    margin: 0 15px;
    color: #999;
    transition: transform 0.3s ease;
}

.nav-item:hover .nav-icon {
    transform: translateX(-5px);
}

.nav-item.next:hover .nav-icon {
    transform: translateX(5px);
}

.nav-content {
    flex: 1;
}

.nav-label {
    font-size: 14px;
    color: #999;
    margin-bottom: 5px;
}

.nav-title {
    font-size: 16px;
    font-weight: 500;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
}


/* 响应式设计 */
@media (max-width: 768px) {
    .article-nav {
        flex-direction: column;
        gap: 20px;
    }

    .nav-item {
        width: 100%;
    }

    .nav-item.next {
        flex-direction: row;
    }

    .nav-icon {
        margin: 0 10px;
    }
}

/* 添加一些动画效果 */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.article-nav {
    animation: slideIn 0.5s ease;
}