/* ── 极简 · .NET 紫 ── */
:root {
    --site-bg: #fafafa;
    --site-bg-2: #f3f3f3;
    --site-surface: #ffffff;
    --site-border: rgba(0, 0, 0, 0.08);
    --site-border-strong: rgba(0, 0, 0, 0.14);
    --site-text: #1a1a1a;
    --site-text-muted: #737373;
    --site-accent: #512bd4;
    --site-accent-2: #4527a0;
    --site-accent-light: #6b4ce6;
    --site-accent-soft: rgba(81, 43, 212, 0.06);
    --site-shadow: none;
    --site-radius: 4px;
    --site-radius-sm: 3px;
    --site-radius-lg: 6px;
}

* {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body.site-body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--site-text);
    background: var(--site-bg);
}

.site-container {
    max-width: 1080px;
}

.site-container-narrow {
    max-width: 720px;
}

/* ── 顶栏 ── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--site-surface);
    border-bottom: 1px solid var(--site-border);
    overflow: visible;
}

.site-navbar {
    padding: 0.6rem 0;
    overflow: visible;
}

.site-navbar .navbar,
.site-navbar .site-container,
.site-navbar-center {
    overflow: visible;
}

.site-navbar .site-container {
    display: flex;
    justify-content: flex-start;
    align-items: center;
}

.site-navbar-center {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    width: 100%;
    gap: 0.75rem 1rem;
}

.site-search {
    position: relative;
    margin-left: auto;
    flex: 0 1 200px;
    width: 200px;
    max-width: 200px;
    overflow: visible;
}

.site-search-input,
.site-search .autoComplete_wrapper > input {
    width: 100%;
    height: 34px;
    margin: 0;
    padding: 0 0.65rem;
    font-size: 0.85rem;
    line-height: 34px;
    color: var(--site-text);
    background: var(--site-bg);
    background-image: none;
    border: 1px solid var(--site-border);
    border-radius: var(--site-radius-sm);
    outline: none;
    box-sizing: border-box;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.site-search-input::placeholder,
.site-search .autoComplete_wrapper > input::placeholder {
    color: var(--site-text-muted);
}

.site-search-input:focus,
.site-search .autoComplete_wrapper > input:focus {
    border-color: var(--site-accent);
    box-shadow: 0 0 0 2px var(--site-accent-soft);
    color: var(--site-text);
}

.site-search-page {
    display: flex;
    gap: 0.65rem;
    max-width: 520px;
}

.site-search-page .site-search-input {
    flex: 1;
    max-width: none;
    height: auto;
    line-height: 1.4;
    padding: 0.4rem 0.65rem;
}

/* autoComplete.js 下拉：悬浮弹出，不占导航栏高度 */
.site-search .autoComplete_wrapper {
    display: block;
    width: 100%;
    position: relative;
    overflow: visible;
}

.site-search .autoComplete_wrapper > ul,
.site-search .site-search-dropdown {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    width: 100%;
    min-width: 240px;
    z-index: 300;
    margin: 0;
    padding: 0;
    list-style: none;
    background: var(--site-surface);
    border: 1px solid var(--site-border);
    border-radius: var(--site-radius-sm);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    max-height: 280px;
    overflow-y: auto;
}

.site-search .autoComplete_wrapper > ul[hidden],
.site-search .site-search-dropdown[hidden] {
    display: none !important;
}

.site-search .autoComplete_wrapper > ul > li {
    margin: 0;
    padding: 0.55rem 0.7rem;
    font-size: 0.85rem;
    cursor: pointer;
    border-bottom: 1px solid var(--site-border);
    white-space: normal;
    list-style: none;
}

.site-search .autoComplete_wrapper > ul > li:last-child {
    border-bottom: none;
}

.site-search .autoComplete_wrapper > ul > li:hover,
.site-search .autoComplete_wrapper > ul > li[aria-selected="true"] {
    background: var(--site-accent-soft);
}

.site-search-suggest-title {
    display: block;
    color: var(--site-text);
}

.site-search-suggest-title mark {
    background: transparent;
    color: var(--site-accent);
    font-weight: 600;
    padding: 0;
}

.site-search-suggest-meta {
    display: block;
    margin-top: 0.15rem;
    font-size: 0.72rem;
    color: var(--site-text-muted);
}

@media (max-width: 767.98px) {
    .site-navbar-center {
        flex-wrap: wrap;
    }

    .site-search {
        order: 3;
        flex: 1 1 100%;
        width: 100%;
        max-width: none;
        margin-left: 0;
    }
}

.site-navbar-group {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 0.25rem 2rem;
}

.site-brand {
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.04em;
    color: var(--site-text) !important;
    margin: 0;
    padding: 0;
    white-space: nowrap;
}

.site-nav-collapse {
    flex-grow: 0;
}

.site-nav {
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 0.1rem;
}

@media (min-width: 768px) {
    .site-navbar-group {
        flex-wrap: nowrap;
    }

    .site-nav-collapse {
        display: flex !important;
    }

    .site-toggler {
        display: none;
    }
}

.site-nav .nav-link {
    color: var(--site-text-muted);
    font-size: 0.9rem;
    padding: 0.35rem 0.75rem;
    border-radius: var(--site-radius-sm);
    transition: color 0.15s;
}

.site-nav .nav-link:hover {
    color: var(--site-text);
    background: transparent;
}

.site-nav .nav-link.active {
    color: var(--site-text);
    background: transparent;
    font-weight: 600;
    box-shadow: none;
}

.site-toggler {
    border-radius: var(--site-radius-sm);
    border-color: var(--site-border);
}

@media (max-width: 767.98px) {
    .site-navbar-center {
        width: 100%;
        justify-content: space-between;
        flex-wrap: wrap;
    }

    .site-navbar-group {
        flex: 1;
    }

    .site-nav-collapse {
        width: 100%;
        flex-basis: 100%;
    }

    .site-nav {
        margin-top: 0.5rem;
        padding-top: 0.5rem;
        border-top: 1px solid var(--site-border);
    }
}

/* ── 主内容 ── */
.site-main {
    flex: 1;
    padding-bottom: 3rem;
}

/* ── Hero ── */
.hero-section {
    padding: 3rem 0 1.5rem;
}

.hero-title {
    font-size: clamp(1.5rem, 3.5vw, 1.85rem);
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--site-text);
    letter-spacing: -0.01em;
}

.hero-desc {
    color: var(--site-text-muted);
    max-width: 480px;
    margin: 0;
    line-height: 1.7;
    font-size: 0.95rem;
}

/* ── 按钮 ── */
.btn-site-primary {
    background: var(--site-accent);
    border: 1px solid var(--site-accent);
    color: #fff;
    border-radius: var(--site-radius-sm);
    padding: 0.45rem 1.1rem;
    font-weight: 500;
    font-size: 0.88rem;
    box-shadow: none;
    transition: background 0.15s;
}

.btn-site-primary:hover {
    color: #fff;
    background: var(--site-accent-2);
    border-color: var(--site-accent-2);
}

.btn-site-outline {
    background: transparent;
    border: 1px solid var(--site-border-strong);
    color: var(--site-text);
    border-radius: var(--site-radius-sm);
    padding: 0.45rem 1.1rem;
    font-weight: 500;
    font-size: 0.88rem;
    transition: border-color 0.15s;
}

.btn-site-outline:hover {
    border-color: var(--site-text);
    color: var(--site-text);
    background: transparent;
}

/* ── 区块 ── */
.section-block {
    padding: 2rem 0;
}

.section-block + .section-block {
    border-top: 1px solid var(--site-border);
}

.section-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 1.25rem;
}

.section-head h2 {
    font-size: 0.85rem;
    font-weight: 600;
    margin: 0;
    color: var(--site-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.section-more {
    color: var(--site-text-muted);
    text-decoration: none;
    font-size: 0.85rem;
}

.section-more:hover {
    color: var(--site-accent);
}

.page-hero {
    padding: 2.5rem 0 1rem;
}

.page-hero h1 {
    font-size: 1.65rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
    letter-spacing: -0.01em;
}

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

/* ── 最新文章（左文右图 · 全宽列表） ── */
.article-list {
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--site-border);
}

.article-row {
    display: flex;
    gap: 1.25rem;
    align-items: center;
    padding: 1.15rem 0;
    border-bottom: 1px solid var(--site-border);
    color: inherit;
    transition: background 0.15s;
}

.article-row:hover {
    background: rgba(0, 0, 0, 0.02);
}

.article-row-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.article-row-link:hover .article-row-title {
    color: var(--site-accent);
}

.article-row-cover {
    flex-shrink: 0;
    width: 160px;
    height: 96px;
    border-radius: var(--site-radius);
    overflow: hidden;
    border: 1px solid var(--site-border);
    text-decoration: none;
}

.article-row-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.article-row-body {
    flex: 1;
    min-width: 0;
}

.article-row-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin: 0 0 0.45rem;
    line-height: 1.45;
    color: var(--site-text);
    transition: color 0.15s;
}

.article-row-summary {
    margin: 0 0 0.65rem;
    font-size: 0.88rem;
    line-height: 1.65;
    color: var(--site-text-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-row-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.article-row-stats {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.78rem;
    color: var(--site-text-muted);
    flex-shrink: 0;
}

.article-row-stat-sep {
    opacity: 0.5;
}

.article-row-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    justify-content: flex-end;
    margin-left: auto;
}

.article-category {
    color: var(--site-text-muted);
    font-weight: 500;
    font-size: 0.78rem;
    text-decoration: none;
    transition: color 0.15s;
}

a.article-category:hover {
    color: var(--site-accent);
}

.article-tag {
    font-size: 0.75rem;
    color: var(--site-text-muted);
    text-decoration: none;
    transition: color 0.15s;
}

a.article-tag:hover {
    color: var(--site-accent);
}

@media (max-width: 640px) {
    .article-row {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }

    .article-row-cover {
        width: 100%;
        height: auto;
        aspect-ratio: 16 / 9;
        order: 1;
    }
}

/* ── 文章卡片（保留供其他页面复用） ── */
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.article-card {
    display: flex;
    flex-direction: column;
    background: var(--site-surface);
    border: 1px solid var(--site-border);
    border-radius: var(--site-radius);
    transition: border-color 0.15s;
    height: 100%;
    overflow: hidden;
}

.article-card:hover {
    border-color: var(--site-border-strong);
}

.article-card-cover {
    display: block;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-bottom: 1px solid var(--site-border);
}

.article-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: opacity 0.2s;
}

.article-card:hover .article-card-cover img {
    opacity: 0.92;
}

.article-card-body {
    padding: 1rem 1.1rem 1.15rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.article-card-meta {
    display: flex;
    gap: 0.65rem;
    align-items: center;
    font-size: 0.78rem;
    color: var(--site-text-muted);
    margin-bottom: 0.5rem;
}

.article-card-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    line-height: 1.45;
}

.article-card-title a {
    color: var(--site-text);
    text-decoration: none;
    transition: color 0.15s;
}

.article-card-title a:hover {
    color: var(--site-accent);
}

.article-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: auto;
}

/* ── 开源项目 ── */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.25rem;
}

.project-card {
    display: flex;
    gap: 0.85rem;
    align-items: flex-start;
    background: var(--site-surface);
    border: 1px solid var(--site-border);
    border-radius: var(--site-radius);
    padding: 1rem 1.1rem;
    transition: border-color 0.15s;
}

.project-card:hover {
    border-color: var(--site-border-strong);
}

.project-card-icon {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--site-radius-sm);
    background: var(--site-bg);
    color: var(--site-text-muted);
    font-family: Consolas, "Cascadia Mono", monospace;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid var(--site-border);
}

.project-card-body {
    min-width: 0;
    flex: 1;
}

.project-card-head {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.35rem;
}

.project-card-title {
    font-size: 0.98rem;
    font-weight: 600;
    margin: 0;
    line-height: 1.4;
}

.project-card-title a {
    color: var(--site-text);
    text-decoration: none;
    transition: color 0.15s;
}

.project-card-title a:hover {
    color: var(--site-accent);
}

.project-card-lang {
    font-size: 0.72rem;
    color: var(--site-text-muted);
    font-family: Consolas, "Cascadia Mono", monospace;
}

.project-card-desc {
    font-size: 0.86rem;
    color: var(--site-text-muted);
    line-height: 1.65;
    margin: 0 0 0.55rem;
}

.project-card-links {
    display: flex;
    gap: 0.85rem;
    font-size: 0.85rem;
}

.project-card-links a {
    color: var(--site-text-muted);
    text-decoration: none;
}

.project-card-links a:hover {
    color: var(--site-accent);
}

/* ── 文章详情 ── */
.article-detail {
    padding: 2rem 0;
}

.article-detail-cover {
    margin: 0 0 1.25rem;
    border-radius: var(--site-radius);
    overflow: hidden;
    border: 1px solid var(--site-border);
}

.article-detail-cover img {
    width: 100%;
    max-height: 260px;
    display: block;
    object-fit: cover;
    object-position: center;
}

.article-detail-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--site-border);
}

.article-detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    font-size: 0.82rem;
    color: var(--site-text-muted);
    margin-bottom: 0.85rem;
}

.article-detail-header h1 {
    font-size: clamp(1.4rem, 3.5vw, 1.75rem);
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 0.65rem;
    letter-spacing: -0.01em;
}

.article-detail-summary {
    font-size: 0.95rem;
    color: var(--site-text-muted);
    line-height: 1.75;
    margin-bottom: 0.5rem;
}

.article-detail-author {
    font-size: 0.85rem;
    color: var(--site-text-muted);
}

.article-detail-footer {
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--site-border);
}

/* ── Markdown 正文 ── */
.markdown-body {
    line-height: 1.85;
    font-size: 0.98rem;
    color: var(--site-text);
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
    margin-top: 1.75rem;
    margin-bottom: 0.65rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--site-text);
}

.markdown-body h2 {
    padding-bottom: 0.3rem;
    border-bottom: 1px solid var(--site-border);
}

.markdown-body p,
.markdown-body ul,
.markdown-body ol {
    margin-bottom: 1rem;
}

.markdown-body a {
    color: var(--site-accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.markdown-body a:hover {
    color: var(--site-accent-2);
}

.markdown-body code {
    background: var(--site-bg-2);
    color: var(--site-text);
    padding: 0.1rem 0.3rem;
    border-radius: var(--site-radius-sm);
    font-size: 0.88em;
}

.markdown-body pre {
    background: #1e1e1e;
    color: #e8e8e8;
    padding: 1rem;
    border-radius: var(--site-radius);
    overflow-x: auto;
    margin-bottom: 1rem;
    font-size: 0.88rem;
}

.markdown-body pre code {
    background: transparent;
    color: inherit;
    padding: 0;
}

.markdown-body blockquote {
    border-left: 2px solid var(--site-border-strong);
    padding: 0.25rem 0 0.25rem 1rem;
    color: var(--site-text-muted);
    margin-bottom: 1rem;
}

.markdown-body img {
    max-width: 100%;
    border-radius: var(--site-radius-sm);
}

.markdown-body table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
    font-size: 0.92rem;
}

.markdown-body th,
.markdown-body td {
    border: 1px solid var(--site-border);
    padding: 0.45rem 0.65rem;
}

.markdown-body th {
    background: var(--site-bg);
    font-weight: 600;
}

/* ── 时间线 ── */
.timeline {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.timeline-label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--site-text-muted);
    margin-bottom: 0.5rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.timeline-filters {
    margin-bottom: 1.75rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--site-border);
}

.timeline-filter-group + .timeline-filter-group {
    margin-top: 1rem;
}

.timeline-filter-label {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--site-text-muted);
    margin-bottom: 0.55rem;
}

.timeline-categories,
.timeline-tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 0.85rem;
    align-items: center;
}

.timeline-filter-link {
    font-size: 0.85rem;
    color: var(--site-text-muted);
    text-decoration: none;
    transition: color 0.15s;
}

.timeline-filter-link:hover {
    color: var(--site-text);
}

.timeline-filter-link.is-active {
    color: var(--site-accent);
    font-weight: 600;
}

.timeline-tag-cloud .article-tag.tag-size-lg {
    font-size: 0.88rem;
}

.timeline-tag-cloud .article-tag.tag-size-md {
    font-size: 0.8rem;
}

.timeline-tag-cloud .article-tag.is-active {
    color: var(--site-accent);
    font-weight: 600;
}

.timeline-hero-filter {
    margin: 0;
    color: var(--site-text-muted);
    font-size: 0.95rem;
}

.timeline-hero-sep {
    margin: 0 0.35rem;
    opacity: 0.6;
}

.timeline-items {
    display: flex;
    flex-direction: column;
    gap: 0;
    border-top: 1px solid var(--site-border);
}

.timeline-item {
    display: flex;
    gap: 1rem;
    align-items: center;
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--site-border);
    color: inherit;
    transition: background 0.15s;
}

.timeline-item:hover {
    background: rgba(0, 0, 0, 0.02);
}

.timeline-item-title {
    text-decoration: none;
    color: inherit;
    transition: color 0.15s;
}

.timeline-item-title:hover {
    color: var(--site-accent);
}

.timeline-item-category {
    color: var(--site-text-muted);
    text-decoration: none;
    transition: color 0.15s;
}

.timeline-item-category:hover {
    color: var(--site-accent);
}

.timeline-item-cover {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    border-radius: var(--site-radius-sm);
    overflow: hidden;
    border: 1px solid var(--site-border);
    text-decoration: none;
}

.timeline-item-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.timeline-item-date {
    flex: 0 0 44px;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--site-text-muted);
    font-variant-numeric: tabular-nums;
}

.timeline-item-body {
    flex: 1;
    min-width: 0;
}

.timeline-item-body h3 {
    font-size: 0.95rem;
    font-weight: 500;
    margin: 0 0 0.2rem;
    color: inherit;
}

.timeline-item-meta {
    display: flex;
    gap: 0.65rem;
    font-size: 0.78rem;
    color: var(--site-text-muted);
}

.timeline-item:hover .timeline-item-meta {
    color: var(--site-text-muted);
}

/* ── 关于页（与时间线同宽，无内嵌卡片） ── */
.about-card {
    padding: 0;
}

.about-card h2 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--site-text);
}

.about-card > p {
    color: var(--site-text);
    line-height: 1.8;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.about-card > p strong {
    color: var(--site-text);
    font-weight: 600;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--site-border);
}

@media (max-width: 640px) {
    .about-features {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

.about-feature {
    padding: 0;
}

.about-feature-icon {
    display: none;
}

.about-feature strong {
    display: block;
    margin-bottom: 0.35rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--site-text);
}

.about-feature p {
    margin: 0;
    font-size: 0.88rem;
    color: var(--site-text-muted);
    line-height: 1.65;
}

/* ── 空状态 ── */
.empty-state {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--site-text-muted);
    font-size: 0.9rem;
}

/* ── 页脚 ── */
.site-footer {
    margin-top: auto;
    padding: 1.5rem 0;
    border-top: 1px solid var(--site-border);
}

.site-footer-inner {
    text-align: center;
}

.site-footer-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.site-footer-nav a {
    color: var(--site-text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.15s;
}

.site-footer-nav a:hover {
    color: var(--site-text);
}

.site-footer-meta {
    margin-top: 0.35rem;
    font-size: 0.72rem;
    color: var(--site-text-muted);
}

.site-footer-meta a {
    color: var(--site-text-muted);
    text-decoration: none;
}

.site-footer-meta a:hover {
    color: var(--site-text);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.site-footer-sep {
    margin: 0 0.35rem;
    opacity: 0.6;
}

/* ── 评论 ── */
.comments-section {
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--site-border);
}

.comments-form-card {
    background: var(--site-surface);
    border: 1px solid var(--site-border);
    border-radius: var(--site-radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.comments-form-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 0.35rem;
}

.comments-form-hint {
    font-size: 0.85rem;
    color: var(--site-text-muted);
    margin: 0 0 1.25rem;
}

.text-required {
    color: #c0392b;
}

.comment-alert {
    padding: 0.65rem 0.85rem;
    border-radius: var(--site-radius-sm);
    font-size: 0.88rem;
    margin-bottom: 1rem;
}

.comment-alert--info {
    background: rgba(81, 43, 212, 0.06);
    border: 1px solid rgba(81, 43, 212, 0.18);
    color: var(--site-accent-2);
}

.comment-alert--error {
    background: rgba(192, 57, 43, 0.06);
    border: 1px solid rgba(192, 57, 43, 0.2);
    color: #c0392b;
}

.comment-replying {
    font-size: 0.88rem;
    color: var(--site-text-muted);
    margin-bottom: 1rem;
    padding: 0.5rem 0.75rem;
    background: var(--site-bg);
    border-radius: var(--site-radius-sm);
}

.comment-replying a {
    margin-left: 0.75rem;
    color: var(--site-accent);
    text-decoration: none;
}

.comment-form .comment-textarea {
    resize: vertical;
    min-height: 120px;
    font-size: 0.95rem;
    border-color: var(--site-border-strong);
    border-radius: var(--site-radius-sm);
}

.comment-form .form-control {
    font-size: 0.9rem;
    border-color: var(--site-border-strong);
    border-radius: var(--site-radius-sm);
}

.comment-form .form-control:focus {
    border-color: var(--site-accent);
    box-shadow: 0 0 0 2px var(--site-accent-soft);
}

.comment-form-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    margin-bottom: 1rem;
}

@media (max-width: 640px) {
    .comment-form-row {
        grid-template-columns: 1fr;
    }
}

.comment-form-field .text-danger {
    font-size: 0.78rem;
}

.comments-list-title {
    font-size: 0.95rem;
    font-weight: 600;
    margin: 0 0 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--site-border);
}

.comments-empty {
    color: var(--site-text-muted);
    font-size: 0.9rem;
    margin: 0;
}

.comments-list {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.comment-item {
    display: flex;
    gap: 0.85rem;
    align-items: flex-start;
}

.comment-item--reply {
    margin-top: 0.85rem;
}

.comment-replies {
    margin-top: 0.85rem;
    padding: 0.85rem 0 0 0.85rem;
    border-left: 2px solid var(--site-border);
}

.comment-avatar {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--site-bg-2);
    color: var(--site-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 600;
    border: 1px solid var(--site-border);
}

.comment-body {
    flex: 1;
    min-width: 0;
}

.comment-head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.35rem;
    font-size: 0.85rem;
}

.comment-author {
    font-weight: 600;
    color: var(--site-text);
    text-decoration: none;
}

a.comment-author:hover {
    color: var(--site-accent);
}

.comment-reply-to {
    color: var(--site-text-muted);
    font-size: 0.82rem;
}

.comment-reply-to::before {
    content: "▸";
    margin-right: 0.35rem;
    opacity: 0.5;
}

.comment-time {
    color: var(--site-text-muted);
    font-size: 0.78rem;
    margin-left: auto;
}

.comment-content {
    margin: 0 0 0.4rem;
    line-height: 1.7;
    font-size: 0.92rem;
    color: var(--site-text);
    white-space: pre-wrap;
    word-break: break-word;
}

.comment-reply-link {
    font-size: 0.82rem;
    color: var(--site-text-muted);
    text-decoration: none;
}

.comment-reply-link:hover {
    color: var(--site-accent);
}