.nav-topic-list,
.nav-article-list {
    display: grid;
    gap: 14px;
}

@media (min-width: 768px) {
    .nav-topic-list {
        grid-template-columns: repeat(auto-fill, minmax(min(340px, 100%), 1fr));
    }
}

.nav-topic-item,
.nav-article-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;

    transition: transform 0.2s, box-shadow 0.2s;
}

.nav-topic-item:hover,
.nav-article-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--main-shadow, 0 6px 18px rgba(0, 0, 0, 0.08));
    text-decoration: none;
}

.nav-topic-item__cover,
.nav-article-item__cover {
    flex: none;
    width: 108px;
    height: 72px;
    overflow: hidden;
    border-radius: var(--main-radius, 8px);
    background: var(--body-bg-2, #f5f5f5);
}

.nav-topic-item__cover > img,
.nav-article-item__cover > img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.nav-topic-item__body,
.nav-article-item__body {
    flex: 1 1 auto;
    min-width: 0;
}

.nav-topic-item__title,
.nav-article-item__title {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
    color: var(--key-color, #333);

    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
}

.nav-topic-item:hover .nav-topic-item__title,
.nav-article-item:hover .nav-article-item__title {
    color: var(--focus-color);
}

.nav-topic-item__intro,
.nav-article-item__intro {
    margin: 6px 0 0;
    font-size: 13px;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
}

.nav-topic-item__meta,
.nav-article-item__meta,
.nav-topic-head__meta,
.nav-article-head__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 8px;
    font-size: 12px;
}

.nav-topic-item__meta i,
.nav-article-item__meta i,
.nav-topic-head__meta i,
.nav-article-head__meta i {
    margin-right: 3px;
}

.nav-topic-head__cover {
    margin: -5px 0 15px;
    border-radius: var(--main-radius, 8px);
    overflow: hidden;
}

.nav-topic-head__cover > img {
    width: 100%;
    display: block;
}

.nav-topic-head__title,
.nav-article-head__title {
    margin: 0;
    font-size: 22px;
    font-weight: 700;
    line-height: 1.4;
    color: var(--key-color, #333);
}

.nav-topic-head__intro,
.nav-article-head__intro {
    margin: 10px 0 0;
    font-size: 14px;
    line-height: 1.7;
}

.nav-article-nav {
    display: grid;
    gap: 12px;
}

@media (min-width: 768px) {
    .nav-article-nav {
        grid-template-columns: 1fr 1fr;
    }
}

.nav-article-nav__item {
    display: block;
    padding: 12px 14px;
    border-radius: var(--main-radius, 8px);
    background: var(--body-bg-2, rgba(0, 0, 0, 0.02));
    color: var(--main-color);
    min-width: 0;
}

.nav-article-nav__item:hover {
    color: var(--focus-color);
    text-decoration: none;
}

.nav-article-nav__item > span {
    display: block;
    font-size: 12px;
}

.nav-article-nav__item > strong {
    display: block;
    margin-top: 4px;
    font-weight: 600;

    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nav-article-nav__item--next {
    text-align: right;
}

.posts-content.nav-content pre:not(.block-code) {
    margin: 20px 0;
    padding: 16px 18px;
    background: var(--muted-bg-color);
    border: 1px solid var(--main-border-color);
    border-radius: 8px;

    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.posts-content.nav-content pre code {
    display: block;
    padding: 0;
    background: none;
    border: 0;
    color: var(--main-color);
    font-size: 13px;
    line-height: 1.7;
    white-space: pre;
}

.posts-content.nav-content :not(pre) > code {
    padding: 2px 6px;
    background: var(--muted-bg-color);
    border-radius: 4px;
    font-size: 0.92em;
    word-break: break-word;
}

.posts-content.nav-content li > p {
    margin: 0;
}

.posts-content.nav-content li > p + ul,
.posts-content.nav-content li > p + ol {
    margin-top: 4px;
}

.nav-site-articles {
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav-site-articles__item + .nav-site-articles__item {
    border-top: 1px solid var(--main-border-color);
}

.nav-site-articles__item > a {
    display: block;
    padding: 12px 0;
    color: inherit;
}

.nav-site-articles__item > a:hover .nav-site-articles__title {
    color: var(--focus-color);
}

.nav-site-articles__title {
    display: block;
    font-weight: 600;

    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nav-site-articles__intro {
    display: block;
    margin-top: 4px;
    font-size: 13px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nav-article-site-head__site {
    display: flex;
    align-items: center;
    gap: 14px;
    color: inherit;
}

.nav-article-site-head__logo {
    width: 44px;
    height: 44px;
    flex: 0 0 44px;
    border-radius: 10px;
    object-fit: contain;
}

.nav-article-site-head__body {
    flex: 1 1 auto;
    min-width: 0;
}

.nav-article-site-head__title {
    display: block;
    font-size: 18px;
    font-weight: 700;
}

.nav-article-site-head__intro {
    display: block;
    margin-top: 2px;
    font-size: 13px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nav-article-site-head__go {
    flex: 0 0 auto;
    color: var(--focus-color);
    font-size: 13px;
}

@media (max-width: 767px) {

    .nav-article-site-head__site {
        flex-wrap: wrap;
    }

    .nav-article-site-head__go {
        flex-basis: 100%;
        padding-left: 58px;
    }
}