:root {
    --text: #314659;
    --muted: #8a97a4;
    --line: #eef2f8;
    --light-line: #f5f7fb;
    --accent: #5d9cec;
    --accent-soft: #eef6ff;
    --bg: #fff;
    --panel: #fff;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--text);
    background: var(--bg);
    font: 300 14px/1.8 Lato, "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
    color: inherit;
    text-decoration: none;
}

a:hover {
    color: var(--accent);
}

.topbar {
    height: 30px;
    border-bottom: 1px solid var(--light-line);
    color: #9aa6b2;
    font-size: 12px;
}

.topbar-inner,
.site-header,
.site-grid,
.site-footer {
    width: 960px;
    max-width: calc(100% - 36px);
    margin: 0 auto;
}

.topbar-inner {
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.topbar-links {
    display: flex;
    gap: 16px;
    white-space: nowrap;
}

.site-header {
    min-height: 76px;
    display: grid;
    grid-template-columns: 246px 1fr;
    align-items: center;
    gap: 30px;
    border-bottom: 1px solid var(--line);
}

.site-title {
    margin: 0;
    color: #223447;
    font-size: 30px;
    font-weight: 700;
    line-height: 1.1;
}

.site-title a:hover {
    color: #223447;
}

.site-nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 22px;
    color: #6f7d8a;
    font-size: 15px;
}

.site-stats {
    grid-column: 2;
    display: flex;
    justify-content: flex-end;
    gap: 18px;
    color: #8d9aa6;
    font-size: 13px;
    margin-top: -18px;
    padding-bottom: 12px;
}

.site-grid {
    display: grid;
    grid-template-columns: 246px minmax(0, 1fr);
    gap: 30px;
    padding: 18px 0 44px;
}

.sidebar {
    color: #6c7a86;
}

.profile-card {
    text-align: center;
    margin: 0 0 34px;
    padding: 18px 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.profile-name {
    margin: 0 0 12px;
    color: #314659;
    font-size: 18px;
    font-weight: 600;
}

.profile-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin: 0 0 16px;
}

.profile-stats strong {
    display: block;
    color: #5f6d7a;
    font-weight: 400;
}

.profile-stats span {
    display: block;
    color: #9aa6b2;
    font-size: 13px;
}

.follow {
    display: block;
    border: 1px solid var(--line);
    line-height: 34px;
    color: #8a97a4;
}

.side-section {
    margin: 0 0 32px;
}

.side-title {
    margin: 0 0 16px;
    padding-left: 10px;
    border-left: 4px solid var(--accent);
    color: #5f6d7a;
    font-size: 20px;
    font-weight: 300;
}

.side-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.side-list li {
    padding: 7px 0;
    color: #7c8995;
}

.search-row {
    display: flex;
}

.search-row input {
    min-width: 0;
    flex: 1;
    height: 36px;
    border: 1px solid var(--line);
    border-right: 0;
    padding: 0 10px;
    color: var(--text);
    outline: none;
}

.search-row button {
    width: 58px;
    border: 1px solid var(--line);
    background: #fff;
    color: #8a97a4;
}

.content {
    min-width: 0;
}

.page-title {
    margin: 0 0 18px;
    color: #5f6d7a;
    font-size: 20px;
    font-weight: 300;
}

.pager {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin: -34px 0 18px;
    color: #9aa6b2;
    font-size: 13px;
}

.pager span {
    min-width: 24px;
    height: 24px;
    padding: 0 8px;
    border: 1px solid var(--line);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.pager .current {
    color: var(--accent);
    border-color: var(--accent-soft);
    background: var(--accent-soft);
}

.post-list {
    margin-top: 8px;
}

.post-item {
    display: block;
    padding: 18px 0 16px;
    border-bottom: 1px solid var(--line);
}

.post-title {
    margin: 0 0 10px;
    color: #314659;
    font-size: 17px;
    font-weight: 300;
    line-height: 1.5;
}

.post-summary {
    margin: 0 0 10px;
    color: #7c8995;
}

.post-meta {
    display: flex;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 12px;
    color: #82909c;
    font-size: 13px;
}

.post-meta span::before {
    content: "○ ";
    color: #9aa6b2;
}

.article {
    padding-bottom: 40px;
}

.article-date {
    margin-bottom: 12px;
    color: #8a97a4;
}

.article h1 {
    margin: 0 0 22px;
    color: #314659;
    font-size: 24px;
    font-weight: 400;
    line-height: 1.4;
}

.article p {
    margin: 0 0 18px;
    color: #4f6070;
    font-size: 17px;
    line-height: 2;
}

.back-link {
    display: inline-block;
    margin-top: 28px;
    color: #8a97a4;
}

.site-footer {
    padding: 24px 0 36px;
    border-top: 1px solid var(--line);
    color: #9aa6b2;
    font-size: 13px;
    text-align: center;
}

@media (max-width: 820px) {
    .topbar {
        display: none;
    }

    .site-header {
        grid-template-columns: 1fr;
        gap: 14px;
        padding: 22px 0 14px;
    }

    .site-nav,
    .site-stats {
        justify-content: flex-start;
    }

    .site-stats {
        grid-column: 1;
        margin-top: 0;
        padding-bottom: 0;
    }

    .site-grid {
        grid-template-columns: 1fr;
    }

    .sidebar {
        order: 2;
    }

    .pager {
        justify-content: flex-start;
        margin: 0 0 12px;
    }

    .post-meta {
        justify-content: flex-start;
    }
}