:root {
  --blog-column: 56rem;
  --blog-body-size: 1rem;
  --blog-list-title: clamp(2rem, 4vw, 3rem);
  --blog-post-title: clamp(1.8rem, 3.6vw, 2.6rem);
  --blog-section-title: clamp(1.3rem, 2.5vw, 1.6rem);
  --blog-subsection-title: clamp(1.1rem, 2vw, 1.3rem);
  --blog-card-title: 1.2rem;
  --blog-stat-size: clamp(1.7rem, 3vw, 2.2rem);
  --blog-kicker-size: 0.75rem;
  --blog-leading: 1.9;
  --blog-title-leading: 1.4;
  --blog-tracking: -0.015em;
  --blog-kicker-tracking: 0.12em;
  --blog-space: 1.5rem;
  --blog-section-gap: 2.5rem;
}

.blog-index,
.blog-article,
body:has(article[data-blog-post]) {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  padding-bottom: calc(6rem + env(safe-area-inset-bottom, 0px));
}

.blog-index *,
.blog-article *,
article[data-blog-post] * {
  box-sizing: border-box;
}

.blog-index h1,
.blog-index h2,
.blog-index h3,
.article-hero h1,
.article-body h1,
.article-body h2,
.article-body h3,
.blog-article .prose h2,
.blog-article .prose h3,
article[data-blog-post] h2,
article[data-blog-post] h3,
#related-posts h2,
#related-posts h3 {
  display: block;
  font-family: var(--font-display);
  letter-spacing: var(--blog-tracking);
  text-wrap: pretty;
  overflow-wrap: break-word;
}

.blog-index a:focus-visible,
.blog-index button:focus-visible,
.blog-article a:focus-visible,
.blog-article summary:focus-visible,
.article-body a:focus-visible,
#related-posts a:focus-visible,
#post-nav a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.blog-list-hero {
  padding-block: clamp(3rem, 7vw, 5rem) 2.5rem;
  text-align: center;
}

.blog-kicker,
.article-kicker,
.article-hero .kicker {
  margin: 0 0 1rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: var(--blog-kicker-size);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--blog-kicker-tracking);
  text-transform: uppercase;
}

.blog-list-hero h1 {
  margin: 0;
  font-size: var(--blog-list-title);
  font-weight: var(--weight-display);
  line-height: var(--blog-title-leading);
}

.blog-list-hero h1::after,
.article-hero h1::after {
  content: "";
  display: block;
  width: 3.5em;
  height: 3px;
  margin: 1.25rem auto;
  border-radius: var(--r-pill);
  background: linear-gradient(90deg, var(--accent), var(--violet));
}

.blog-deck {
  max-width: 42rem;
  margin: 0 auto;
  color: var(--muted);
  font-size: var(--fs-lead);
  line-height: var(--blog-leading);
}

.blog-fact-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.5rem;
}

.blog-fact-row span {
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--panel);
  color: var(--muted);
  font-size: var(--fs-sm);
}

.blog-library {
  padding-block: 0 2rem;
}

.blog-library-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.blog-library-heading h2 {
  margin: 0;
  font-size: var(--blog-section-title);
}

.blog-result-count {
  margin: 0;
  color: var(--muted);
  font-size: var(--fs-sm);
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.5rem;
  margin-bottom: 1.5rem;
  border-radius: var(--r-board);
  background: var(--rail);
}

.blog-filters button {
  min-height: 44px;
  padding: 0.6rem 1rem;
  border: 1px solid var(--clear);
  border-radius: var(--r-pill);
  background: var(--clear);
  color: var(--muted);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: var(--weight-medium);
  line-height: 1.5;
  cursor: pointer;
  transition: background var(--speed-fast) var(--ease-out), color var(--speed-fast) var(--ease-out);
}

.blog-filters button:hover {
  background: var(--panel);
  color: var(--ink);
}

.blog-filters button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--panel);
}

.article-grid,
.related-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.article-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  background: var(--panel);
  box-shadow: var(--shadow-card);
  transition: border-color var(--speed-fast) var(--ease-out), box-shadow var(--speed-fast) var(--ease-out), transform var(--speed-fast) var(--ease-out);
}

.article-card:hover,
.article-card:focus-within {
  border-color: var(--accent);
  box-shadow: var(--shadow-lift);
  transform: translateY(-2px);
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  color: var(--muted);
  font-size: var(--fs-sm);
  line-height: 1.6;
}

.article-meta time,
.post-nav-date {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
}

.article-card .tag {
  padding: 0.2rem 0.6rem;
  border-radius: var(--r-tag);
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: var(--fs-xs);
}

.article-card h3 {
  margin: 1rem 0 0.75rem;
  font-size: var(--blog-card-title);
  font-weight: var(--weight-bold);
  line-height: 1.65;
  overflow-wrap: anywhere;
}

.article-card h3 a {
  color: var(--ink);
  text-decoration: none;
}

.article-card h3 a:hover {
  color: var(--accent);
}

.article-summary {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: var(--blog-body-size);
  line-height: 1.85;
  overflow-wrap: anywhere;
}

.article-card .link-arrow {
  align-self: flex-start;
  margin-top: auto;
  color: var(--accent);
  font-size: var(--fs-sm);
  font-weight: var(--weight-semibold);
  text-decoration: none;
}

.article-card .link-arrow:hover {
  text-decoration: underline;
  text-underline-offset: 0.25em;
}

.blog-empty {
  grid-column: 1 / -1;
  padding: 2rem 1.5rem;
  margin: 0;
  border: 1px dashed var(--border-strong);
  border-radius: var(--r-board);
  background: var(--panel-2);
  color: var(--muted);
  line-height: var(--blog-leading);
}

.breadcrumbs,
.breadcrumb,
.article-hero,
.blog-article .reading-wrap,
.reading-wrap.article-body,
.reading-wrap.prose,
.blog-article > .promo-block,
.blog-article main > .promo-block,
#related-posts,
#post-nav {
  box-sizing: border-box;
  width: 100%;
  max-width: calc(var(--blog-column) + var(--gutter) + var(--gutter));
  padding-inline: var(--gutter);
  margin-inline: auto;
}

.breadcrumbs,
.breadcrumb {
  padding-top: 1.5rem;
  margin-top: 0;
  margin-bottom: 0;
  color: var(--muted);
  font-size: var(--fs-sm);
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.breadcrumbs ol,
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.65rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.breadcrumbs li + li::before,
.breadcrumb li + li::before {
  content: "›";
  margin-right: 0.65rem;
  color: var(--muted);
}

.breadcrumbs a,
.breadcrumb a {
  color: var(--muted);
  text-underline-offset: 0.2em;
}

.article-hero {
  position: relative;
  padding-block: 2.5rem 1.5rem;
  border: 0;
  border-radius: 0;
  background: none;
  box-shadow: none;
  text-align: center;
}

.article-hero h1 {
  margin: 0;
  color: var(--ink);
  font-size: var(--blog-post-title);
  font-weight: var(--weight-display);
  line-height: var(--blog-title-leading);
}

.article-hero .article-summary,
.article-hero .article-deck,
.article-hero > p:not(.article-kicker):not(.kicker):not(.article-meta) {
  max-width: 48rem;
  margin: 0 auto 1rem;
  color: var(--muted);
  font-size: var(--blog-body-size);
  line-height: var(--blog-leading);
}

.article-hero .article-meta {
  justify-content: center;
  gap: 0.45rem;
  margin-block: 1rem 0;
}

.article-hero .article-meta > * + *::before {
  content: "·";
  margin-inline: 0.15rem 0.6rem;
  color: var(--muted);
}

.article-hero .article-meta .tag,
.article-hero .article-meta .badge,
.article-hero .article-meta time,
.article-hero .article-meta .read-time {
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
  color: var(--muted);
  font-size: var(--fs-sm);
}

.article-hero .article-meta .tag {
  color: var(--accent-dark);
}

.blog-article .reading-wrap,
.reading-wrap.article-body,
.reading-wrap.prose {
  width: 100%;
  max-width: calc(var(--blog-column) + var(--gutter) + var(--gutter));
  padding-inline: var(--gutter);
  padding-block: 0 1.5rem;
  margin-inline: auto;
}

.article-body,
.blog-article .prose,
article[data-blog-post] {
  color: var(--ink);
  font-size: var(--blog-body-size);
  line-height: var(--blog-leading);
  overflow-wrap: break-word;
}

.article-body > :first-child,
.blog-article .prose > :first-child {
  margin-top: 0;
}

.article-body p,
.blog-article .prose p,
article[data-blog-post] p {
  margin-block: 0 1.2rem;
}

.article-body h2,
.blog-article .prose h2,
article[data-blog-post] h2 {
  position: relative;
  margin-block: 2.5rem 1rem;
  padding-top: 0.75rem;
  color: var(--ink);
  font-size: var(--blog-section-title);
  font-weight: var(--weight-bold);
  line-height: 1.6;
  scroll-margin-top: var(--anchor-gap);
}

.article-body h2::before,
.blog-article .prose h2::before,
article[data-blog-post] h2::before {
  content: "";
  display: block;
  width: 2rem;
  height: 3px;
  margin-bottom: 0.6rem;
  border-radius: var(--r-pill);
  background: var(--accent);
}

.article-body h3,
.blog-article .prose h3,
article[data-blog-post] h3 {
  margin-block: 1.8rem 0.7rem;
  font-size: var(--blog-subsection-title);
  font-weight: var(--weight-semibold);
  line-height: 1.65;
}

.article-body a,
.blog-article .prose a,
article[data-blog-post] a {
  color: var(--accent-dark);
  overflow-wrap: anywhere;
  text-underline-offset: 0.2em;
}

.article-body ul,
.article-body ol,
.blog-article .prose ul,
.blog-article .prose ol,
article[data-blog-post] ul,
article[data-blog-post] ol {
  padding-left: 1.5rem;
  margin-block: 0 1.4rem;
}

.article-body li,
.blog-article .prose li,
article[data-blog-post] li {
  margin-block: 0.5rem;
}

.article-body blockquote,
.blog-article .prose blockquote,
article[data-blog-post] blockquote {
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  border-left: 3px solid var(--violet);
  border-radius: var(--r-card);
  background: var(--violet-tint);
  color: var(--ink);
}

.article-body blockquote > :last-child,
.blog-article .prose blockquote > :last-child {
  margin-bottom: 0;
}

.article-body .table-scroll,
.blog-article .prose .table-scroll,
article[data-blog-post] .table-scroll {
  max-width: 100%;
  overflow-x: auto;
  margin-block: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--r-card);
}

.article-body table,
.blog-article .prose table,
article[data-blog-post] table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--blog-body-size);
  line-height: 1.8;
  text-align: left;
}

.article-body th,
.article-body td,
.blog-article .prose th,
.blog-article .prose td,
article[data-blog-post] th,
article[data-blog-post] td {
  min-width: 9rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.article-body thead th,
.blog-article .prose thead th,
article[data-blog-post] thead th {
  background: var(--accent-dark);
  color: var(--panel);
  font-weight: var(--weight-semibold);
}

.article-body tbody tr:nth-child(even),
.blog-article .prose tbody tr:nth-child(even),
article[data-blog-post] tbody tr:nth-child(even) {
  background: var(--panel-2);
}

.article-body tbody tr:hover,
.blog-article .prose tbody tr:hover,
article[data-blog-post] tbody tr:hover {
  background: var(--accent-soft);
}

.article-body pre,
.blog-article .prose pre,
article[data-blog-post] pre {
  position: relative;
  max-width: 100%;
  overflow-x: auto;
  padding: 3rem 1.25rem 1.25rem;
  margin-block: 1.5rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-card);
  background: var(--ink);
  color: var(--panel);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  line-height: 1.8;
  white-space: pre;
  overflow-wrap: normal;
}

.article-body pre::before,
.blog-article .prose pre::before,
article[data-blog-post] pre::before {
  content: "CONFIG / 配置记录";
  position: absolute;
  top: 0.75rem;
  left: 1.25rem;
  color: var(--panel);
  font-family: var(--font-mono);
  font-size: var(--blog-kicker-size);
  letter-spacing: var(--blog-kicker-tracking);
}

.article-body code,
.blog-article .prose code,
article[data-blog-post] code {
  padding: 0.15em 0.35em;
  border-radius: var(--r-mini);
  background: var(--panel-2);
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  overflow-wrap: anywhere;
}

.article-body pre code,
.blog-article .prose pre code,
article[data-blog-post] pre code {
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  white-space: inherit;
  overflow-wrap: normal;
}

.callout {
  position: relative;
  padding: 1.25rem 1.25rem 1.25rem 3.6rem;
  margin-block: 1.5rem;
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--r-card);
  background: var(--accent-tint);
  color: var(--ink);
}

.callout::before {
  content: "i";
  position: absolute;
  top: 1.3rem;
  left: 1rem;
  width: 1.5rem;
  height: 1.5rem;
  border: 1px solid var(--accent);
  border-radius: var(--r-round);
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: var(--weight-bold);
  line-height: 1.4rem;
  text-align: center;
}

.callout.warning,
.callout-warning {
  border-left-color: var(--warn);
  background: color-mix(in srgb, var(--warn) 10%, var(--panel));
}

.callout.warning::before,
.callout-warning::before {
  content: "!";
  border-color: var(--warn);
  color: var(--ink);
}

.callout.success,
.callout-success {
  border-left-color: var(--success);
  background: color-mix(in srgb, var(--success) 9%, var(--panel));
}

.callout.success::before,
.callout-success::before {
  content: "✓";
  border-color: var(--success);
  color: var(--ink);
}

.callout > :last-child {
  margin-bottom: 0;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr));
  gap: 1rem;
  margin-block: 1.5rem;
}

.stat-card {
  min-width: 0;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: var(--r-card);
  background: var(--accent-tint);
}

.stat-card:nth-child(even) {
  border-top-color: var(--violet);
  background: var(--violet-tint);
}

.stat-num {
  display: block;
  margin-bottom: 0.3rem;
  color: var(--accent-dark);
  font-family: var(--font-display);
  font-size: var(--blog-stat-size);
  font-weight: var(--weight-bold);
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.stat-card:nth-child(even) .stat-num {
  color: var(--ink);
}

.stat-label {
  display: block;
  color: var(--muted);
  font-size: var(--fs-sm);
  line-height: 1.8;
}

.article-body .check-list,
.blog-article .prose .check-list,
article[data-blog-post] .check-list {
  padding: 0;
  margin-block: 1.5rem;
  list-style: none;
}

.check-list li {
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  background: var(--panel);
}

.verdict {
  padding: 1.15rem 1.4rem;
  margin-block: 1.5rem;
  border-left: 4px solid var(--accent);
  border-radius: var(--r-card);
  background: var(--accent-tint);
  color: var(--ink);
}

.verdict strong {
  color: var(--accent-dark);
  font-weight: var(--weight-bold);
}

.verdict > :last-child {
  margin-bottom: 0;
}

.promo-block {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding: 1.75rem;
  margin-block: 2rem;
  border: 1px solid var(--accent-dark);
  border-radius: var(--r-board);
  background: linear-gradient(120deg, var(--accent-dark), var(--accent));
  color: var(--panel);
  box-shadow: var(--shadow-card);
}

.promo-block > div:first-child {
  flex: 1 1 22rem;
  min-width: 0;
}

.promo-block strong {
  color: var(--panel);
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: var(--weight-bold);
}

.promo-block p {
  margin: 0.5rem 0 0;
  color: var(--panel);
  font-size: var(--blog-body-size);
  line-height: 1.85;
}

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

.promo-block .btn-primary {
  border: 1px solid var(--panel);
  background: var(--panel);
  color: var(--accent-dark);
  box-shadow: none;
}

.promo-block .btn-primary:hover {
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.promo-block .btn-secondary {
  border: 1px solid var(--panel);
  background: var(--clear);
  color: var(--panel);
}

.promo-block .btn-secondary:hover {
  background: var(--accent-dark);
  color: var(--panel);
}

.blog-list-promo {
  max-width: calc(var(--content-width) - var(--gutter) - var(--gutter));
  width: calc(100% - var(--gutter) - var(--gutter));
  margin-inline: auto;
  margin-bottom: 3rem;
}

.blog-article > .promo-block,
.blog-article main > .promo-block {
  width: calc(100% - var(--gutter) - var(--gutter));
  max-width: var(--blog-column);
  padding: 1.75rem;
}

#related-posts {
  padding-block: 1.5rem 2rem;
}

#related-posts:empty,
#post-nav:empty {
  display: none;
}

#related-posts .related-heading {
  margin: 0 0 1.25rem;
  font-size: var(--blog-section-title);
  line-height: 1.6;
}

.related-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.related-grid .article-card {
  padding: 1.15rem;
}

#post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  padding-block: 1.5rem;
}

.post-nav-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  gap: 0.65rem;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-top: 3px solid var(--border);
  border-radius: var(--r-card);
  background: var(--panel);
  color: var(--ink);
  text-decoration: none;
  transition: border-color var(--speed-fast) var(--ease-out), transform var(--speed-fast) var(--ease-out);
}

.post-nav-card:hover,
.post-nav-card:focus-visible {
  border-top-color: var(--accent);
  border-inline-color: var(--accent);
  transform: translateY(-2px);
}

.post-nav-next {
  grid-column: 2;
}

.post-nav-label {
  color: var(--accent-dark);
  font-size: var(--fs-sm);
  font-weight: var(--weight-semibold);
}

.post-nav-title {
  font-size: var(--blog-body-size);
  font-weight: var(--weight-semibold);
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.post-nav-date {
  margin-top: auto;
  color: var(--muted);
}

@media (max-width: 860px) {
  .article-body table,
  .blog-article .prose table,
  article[data-blog-post] table {
    display: block;
    width: fit-content;
    max-width: 100%;
    overflow-x: auto;
  }

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

@media (max-width: 640px) {
  .no-break {
    white-space: normal;
  }

  .article-grid,
  #post-nav {
    grid-template-columns: 1fr;
  }

  .post-nav-next {
    grid-column: auto;
  }

  .blog-list-hero {
    padding-block: 2.5rem 2rem;
  }

  .blog-deck {
    font-size: var(--blog-body-size);
  }

  .article-hero {
    padding-block: 2rem 1rem;
  }

  .article-card {
    padding: 1.25rem;
  }

  .blog-filters {
    gap: 0.35rem;
  }

  .blog-filters button {
    padding-inline: 0.8rem;
  }

  .promo-block,
  .blog-article > .promo-block,
  .blog-article main > .promo-block {
    padding: 1.5rem;
  }

  .blog-promo-actions {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .article-card,
  .post-nav-card,
  .blog-filters button {
    transition: none;
  }

  .article-card:hover,
  .article-card:focus-within,
  .post-nav-card:hover,
  .post-nav-card:focus-visible {
    transform: none;
  }
}