:root {
    --bg: #f7f5f0;
    --fg: #1c1917;
    --muted: #78716c;
    --accent: #0f766e;
    --card: #ffffff;
    --border: #e7e5e4;
    --radius: 10px;
    --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--font);
    color: var(--fg);
    background:
        radial-gradient(circle at top left, rgba(15, 118, 110, 0.08), transparent 40%),
        linear-gradient(180deg, #fafaf9 0%, var(--bg) 100%);
    min-height: 100vh;
    line-height: 1.6;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.container {
    width: min(920px, calc(100% - 2rem));
    margin: 0 auto;
}

.container--wide {
    width: min(1100px, calc(100% - 2rem));
}

.portal-layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 1.75rem;
    align-items: start;
    padding-bottom: 2rem;
}

.portal-layout--one {
    grid-template-columns: 1fr;
}

.portal-layout--one .portal-sidebar {
    position: static;
}

.portal-layout--one .site-category-nav {
    flex-direction: row;
    flex-wrap: wrap;
    overflow-x: auto;
}

.portal-layout--one .site-category-link {
    white-space: nowrap;
    flex: 0 0 auto;
}

.portal-layout--one .portal-main .hero {
    padding-top: 0.75rem;
}

.portal-sidebar {
    position: sticky;
    top: 4.5rem;
}

.site-category-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.5rem;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.site-detail {
    padding: 1.5rem 0 3rem;
}

.site-detail-header {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
    margin: 1rem 0 1.25rem;
}

.site-detail-logo {
    width: 72px;
    height: 72px;
    object-fit: contain;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--card);
    padding: 0.5rem;
}

.site-detail-header h1 {
    margin: 0 0 0.35rem;
    font-size: clamp(1.5rem, 3vw, 2rem);
}

.site-detail-desc {
    color: var(--muted);
    font-size: 1.05rem;
    line-height: 1.7;
    margin: 0 0 1.75rem;
}

.site-detail-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

.btn-visit {
    display: inline-block;
    padding: 0.55rem 1.15rem;
    background: var(--accent);
    color: #fff;
    border-radius: 6px;
    font-weight: 600;
}

.btn-visit:hover {
    text-decoration: none;
    filter: brightness(1.05);
}

.btn-back {
    display: inline-block;
    padding: 0.55rem 1rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--muted);
}

.btn-back:hover {
    text-decoration: none;
    color: var(--accent);
    border-color: rgba(15, 118, 110, 0.35);
}

.site-category-link {
    display: block;
    padding: 0.55rem 0.75rem;
    border-radius: 6px;
    color: var(--fg);
    font-size: 0.95rem;
    line-height: 1.35;
}

.site-category-link:hover {
    text-decoration: none;
    background: rgba(15, 118, 110, 0.06);
    color: var(--accent);
}

.site-category-link.is-active {
    background: rgba(15, 118, 110, 0.12);
    color: var(--accent);
    font-weight: 600;
}

.portal-main .hero {
    padding-top: 1.5rem;
}

.site-cat {
    display: inline-block;
    margin-top: 0.65rem;
    margin-right: 0.5rem;
    padding: 0.1rem 0.45rem;
    border-radius: 4px;
    background: #f5f5f4;
    color: var(--muted);
    font-size: 0.75rem;
}

@media (max-width: 768px) {
    .portal-layout {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .portal-sidebar {
        position: static;
        top: auto;
    }

    .site-category-nav {
        flex-direction: row;
        flex-wrap: nowrap;
        overflow-x: auto;
        gap: 0.35rem;
        -webkit-overflow-scrolling: touch;
    }

    .site-category-link {
        white-space: nowrap;
        flex: 0 0 auto;
    }

    .portal-main .hero {
        padding-top: 0.5rem;
    }
}

.site-header {
    border-bottom: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(8px);
    position: sticky;
    top: 0;
    z-index: 10;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 0;
    flex-wrap: wrap;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.brand {
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--fg);
}

.nav {
    display: flex;
    gap: 1rem;
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.lang-link {
    display: inline-block;
    padding: 0.2rem 0.55rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--muted);
    font-size: 0.8125rem;
    line-height: 1.4;
}

.lang-link:hover {
    color: var(--accent);
    text-decoration: none;
    border-color: rgba(15, 118, 110, 0.35);
}

.lang-link.is-active {
    color: #fff;
    background: var(--accent);
    border-color: var(--accent);
}


.site-footer {
    margin-top: 4rem;
    padding: 2rem 0;
    color: var(--muted);
    border-top: 1px solid var(--border);
    font-size: 0.9rem;
}

.hero {
    padding: 3rem 0 1.5rem;
}

.hero h1 {
    margin: 0 0 0.5rem;
    font-size: clamp(2rem, 5vw, 2.75rem);
}

.lead {
    color: var(--muted);
    margin: 0 0 1.5rem;
}

.site-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
    padding-bottom: 2rem;
}

.site-card {
    display: block;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    color: inherit;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.site-card:hover {
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(28, 25, 23, 0.08);
}

.site-card h2 {
    margin: 0.5rem 0;
    font-size: 1.1rem;
}

.site-card p {
    margin: 0;
    color: var(--muted);
    font-size: 0.95rem;
}

.site-logo {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.domain {
    display: inline-block;
    margin-top: 0.75rem;
    font-size: 0.8rem;
    color: var(--accent);
}

.page-title {
    margin: 2rem 0 1rem;
}

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

.article-item {
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--border);
}

.article-item h2 {
    margin: 0 0 0.35rem;
    font-size: 1.25rem;
}

.meta {
    color: var(--muted);
    font-size: 0.875rem;
}

.summary {
    margin: 0.5rem 0 0;
    color: var(--muted);
}

.tag-top {
    display: inline-block;
    margin-left: 0.5rem;
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    background: #ccfbf1;
    color: #115e59;
    font-size: 0.75rem;
}

.article-detail {
    padding: 2rem 0 3rem;
}

.article-detail h1 {
    margin: 0 0 0.75rem;
    font-size: clamp(1.75rem, 4vw, 2.25rem);
}

.article-content {
    margin-top: 1.5rem;
}

.article-content h2,
.article-content h3 {
    margin-top: 1.5rem;
}

.article-content pre {
    overflow: auto;
    padding: 1rem;
    background: #1c1917;
    color: #fafaf9;
    border-radius: 8px;
}

.article-content code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.article-content img {
    max-width: 100%;
    height: auto;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    align-items: center;
    margin: 1.25rem 0 0.5rem;
    font-size: 0.9rem;
    color: var(--muted);
}

.breadcrumb .sep {
    color: var(--border);
}

.cover {
    display: block;
    width: 100%;
    max-height: 220px;
    object-fit: cover;
    border-radius: var(--radius);
    margin-bottom: 0.75rem;
    border: 1px solid var(--border);
}

.article-nav {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 2.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}

.article-nav a {
    max-width: 48%;
}

.site-footer .footer-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 0.75rem 1.5rem;
    align-items: center;
    padding: 1.5rem 0 2rem;
    /* border-top: 1px solid var(--border); */
    color: var(--muted);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1rem;
}

.pager {
    margin: 2rem 0;
}


.pager ul {
    display: flex;
    gap: 0.5rem;
    list-style: none;
    padding: 0;
}

.pager li a,
.pager li span {
    display: inline-block;
    padding: 0.35rem 0.7rem;
    border: 1px solid var(--border);
    border-radius: 6px;
}

.empty {
    color: var(--muted);
    padding: 3rem 0;
}

.error-page {
    min-height: calc(100vh - 2rem);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted);
    padding: 3rem 0;
    text-align: center;
}

.error-page__inner {
    width: min(28rem, 100%);
}

.error-page__code {
    margin: 0;
    font-size: clamp(3.5rem, 12vw, 5.5rem);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.04em;
    color: var(--fg);
}

.error-page__title {
    margin: 1rem 0 0;
    font-size: 1.25rem;
    font-weight: 500;
    line-height: 1.45;
    color: var(--fg);
}

.error-page__meta {
    margin: 0.75rem 0 0;
    font-size: 0.875rem;
}

.error-page__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    margin-top: 1.75rem;
}

.error-page__langs {
    justify-content: center;
    margin-top: 1.5rem;
}