:root {
  --blog-reading: 56rem;
  --blog-title: clamp(1.85rem, 4vw, 2.6rem);
  --blog-list-title: clamp(2rem, 4.5vw, 3rem);
  --blog-h2: clamp(1.3rem, 2.5vw, 1.6rem);
  --blog-h3: 1.3rem;
  --blog-body: 1rem;
  --blog-small: 0.875rem;
  --blog-caption: 0.8rem;
  --blog-leading: 1.9;
  --blog-tracking: -0.015em;
  --blog-rule: 4px;
  --blog-lift: -2px;
}

.blog-list-wrap,
.breadcrumbs,
.breadcrumb,
.article-hero,
.reading-wrap,
article[data-blog-article] {
  box-sizing: border-box;
  min-width: 0;
}

.blog-list-wrap {
  width: 100%;
  max-width: calc(var(--page-width) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
  padding-bottom: 3rem;
}

.breadcrumbs,
.breadcrumb,
.article-hero,
.reading-wrap {
  width: 100%;
  max-width: calc(var(--blog-reading) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.breadcrumbs,
.breadcrumb {
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--muted);
  font-family: var(--font-body);
  font-size: var(--blog-small);
  line-height: 1.8;
  overflow-wrap: anywhere;
}

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

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

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

.blog-list-hero {
  margin-block: 2.5rem 2rem;
  padding-block: 1.5rem;
  border-top: var(--blog-rule) solid var(--text);
  border-bottom: 1px solid var(--border);
}

.blog-kicker {
  margin: 0 0 0.75rem;
  color: var(--muted);
  font-size: var(--blog-small);
  font-weight: var(--weight-semibold);
}

.blog-list-hero h1,
.article-hero h1,
.article-body h2,
.article-body h3,
article[data-blog-article] h2,
article[data-blog-article] h3,
.article-card h2,
.article-card h3,
.promo-block h2,
#related-posts > h2 {
  display: block;
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  color: var(--text);
  letter-spacing: var(--blog-tracking);
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

.blog-list-hero h1 {
  margin: 0 0 1rem;
  font-size: var(--blog-list-title);
  line-height: 1.25;
}

.blog-list-hero > p:last-child {
  max-width: var(--blog-reading);
  margin-bottom: 0;
  color: var(--muted);
  font-size: var(--blog-body);
  line-height: var(--blog-leading);
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.blog-filter {
  min-height: 2.75rem;
  max-width: 100%;
  padding: 0.6rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  color: var(--muted);
  font-family: var(--font-body);
  font-size: var(--blog-small);
  font-weight: var(--weight-medium);
  cursor: pointer;
  transition: border-color var(--speed-fast) var(--ease-out),
    background-color var(--speed-fast) var(--ease-out);
}

.blog-filter:hover {
  border-color: var(--accent-dark);
  color: var(--text);
}

.blog-filter.is-active,
.blog-filter[aria-pressed="true"] {
  border-color: var(--text);
  background: var(--text);
  color: var(--panel);
}

.blog-filter:focus-visible,
.blog-list-wrap a:focus-visible,
.reading-wrap a:focus-visible,
.article-hero a:focus-visible,
.float-cta:focus-visible {
  outline: 2px solid var(--accent-dark);
  outline-offset: 4px;
}

.blog-status {
  min-height: 1.5em;
  margin-block: 1rem;
  color: var(--muted);
  font-size: var(--blog-small);
}

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

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

.article-card:hover,
.article-card:focus-within {
  border-color: var(--accent-dark);
  transform: translateY(var(--blog-lift));
}

.article-meta {
  display: flex;
  justify-content: flex-start;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  margin-bottom: 1rem;
  color: var(--muted);
  font-family: var(--font-body);
  font-size: var(--blog-caption);
  line-height: 1.6;
}

.article-meta > time,
.article-meta > .read-time,
.article-meta > .reading-time {
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.article-meta > .badge {
  max-width: 100%;
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--text);
  border-radius: var(--radius-sm);
  background: var(--text);
  color: var(--panel);
  font-family: var(--font-body);
  font-size: inherit;
  white-space: normal;
}

.article-card h2,
.article-card h3 {
  margin: 0 0 0.8rem;
  font-size: var(--blog-h3);
  line-height: 1.6;
}

.article-card h2 a,
.article-card h3 a {
  color: inherit;
  text-decoration: none;
}

.article-card p {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: var(--blog-body);
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.article-read-link {
  align-self: flex-start;
  margin-top: auto;
  color: var(--text);
  font-size: var(--blog-small);
  font-weight: var(--weight-semibold);
  text-underline-offset: 0.25em;
}

.blog-empty {
  grid-column: 1 / -1;
  padding: 1.5rem;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--muted);
  line-height: var(--blog-leading);
}

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

.article-hero::before,
.article-hero::after {
  content: "";
  position: absolute;
  inset-inline: var(--gutter);
  pointer-events: none;
}

.article-hero::before {
  top: 0;
  height: var(--blog-rule);
  background: linear-gradient(to right, var(--text) 0 76%, var(--accent-dark) 76% 100%);
}

.article-hero::after {
  bottom: 0;
  height: 1px;
  background: var(--border);
}

.article-hero .article-meta {
  margin-bottom: 1.25rem;
}

.article-hero h1 {
  margin: 0 0 1.25rem;
  font-size: var(--blog-title);
  line-height: 1.4;
}

.article-hero > p,
.article-hero .article-summary,
.article-hero .article-deck {
  margin-block: 0;
  color: var(--muted);
  font-size: var(--blog-body);
  line-height: var(--blog-leading);
}

.reading-wrap {
  padding-block: 0 2.5rem;
}

.prose.article-body,
article[data-blog-article] {
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--blog-body);
  line-height: var(--blog-leading);
  overflow-wrap: anywhere;
}

.reading-wrap .article-body {
  width: 100%;
  max-width: none;
  margin-inline: 0;
  padding-inline: 0;
}

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

.article-body p,
article[data-blog-article] p {
  margin-block: 0 1.25rem;
}

.article-body h2,
article[data-blog-article] h2 {
  margin-block: 2.5rem 1rem;
  font-size: var(--blog-h2);
  line-height: 1.6;
  scroll-margin-top: var(--anchor-offset);
}

.article-body h2::before,
article[data-blog-article] h2::before {
  content: "";
  display: inline-block;
  width: 1.15rem;
  height: 0.2rem;
  margin-inline-end: 0.65rem;
  vertical-align: 0.3em;
  border-radius: var(--radius-tiny);
  background: var(--accent-dark);
}

.article-body h3,
article[data-blog-article] h3 {
  margin-block: 1.75rem 0.8rem;
  font-size: var(--blog-h3);
  line-height: 1.6;
}

.article-body a,
article[data-blog-article] a {
  color: var(--accent-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.25em;
}

.article-body strong,
article[data-blog-article] strong {
  color: var(--text);
  font-weight: var(--weight-bold);
}

.article-body ul,
.article-body ol,
article[data-blog-article] ul,
article[data-blog-article] ol {
  margin-block: 1rem 1.5rem;
  padding-inline-start: 1.5rem;
}

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

.article-body blockquote,
article[data-blog-article] blockquote {
  margin: 1.5rem 0;
  padding: 1.25rem 1.5rem;
  border-inline-start: var(--blog-rule) solid var(--border-strong);
  background: var(--panel-2);
  color: var(--muted);
}

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

.article-body code,
article[data-blog-article] code {
  padding: 0.1em 0.3em;
  border-radius: var(--radius-sm);
  background: var(--panel-2);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: var(--blog-small);
  overflow-wrap: anywhere;
}

.article-body pre,
article[data-blog-article] pre {
  position: relative;
  max-width: 100%;
  margin-block: 1.5rem;
  padding: 2.75rem 1.25rem 1.25rem;
  overflow-x: auto;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--text);
  color: var(--panel);
  line-height: 1.8;
}

.article-body pre::before,
article[data-blog-article] pre::before {
  content: "VPNIL / 配置记录";
  position: absolute;
  top: 0.75rem;
  left: 1.25rem;
  color: var(--panel-2);
  font-family: var(--font-mono);
  font-size: var(--blog-caption);
}

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

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

.article-body table,
article[data-blog-article] table {
  width: 100%;
  margin-block: 1.5rem;
  border-collapse: collapse;
  background: var(--window);
  color: var(--text);
  font-size: var(--blog-small);
  line-height: 1.8;
}

.article-body .table-scroll table,
article[data-blog-article] .table-scroll table {
  margin: 0;
}

.article-body caption,
article[data-blog-article] caption {
  padding: 0.75rem;
  text-align: start;
  color: var(--muted);
}

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

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

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

.article-body tbody tr:hover,
article[data-blog-article] tbody tr:hover {
  background: var(--panel-2);
}

.callout {
  position: relative;
  margin-block: 1.5rem;
  padding: 1.25rem 1.25rem 1.25rem 3.25rem;
  border: 1px solid var(--border);
  border-inline-start: var(--blog-rule) solid var(--accent-dark);
  border-radius: var(--radius-sm);
  background: var(--panel);
  color: var(--text);
}

.callout::before {
  content: "i";
  position: absolute;
  inset-inline-start: 1rem;
  top: 1.35rem;
  width: 1.3rem;
  height: 1.3rem;
  border: 1px solid currentColor;
  border-radius: var(--round);
  color: var(--accent-dark);
  font-weight: var(--weight-bold);
  font-size: var(--blog-small);
  line-height: 1.3rem;
  text-align: center;
}

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

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

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

.callout.success::before,
.callout--success::before {
  color: var(--success);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-block: 1.5rem;
}

.stat-card {
  min-width: 0;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-top: var(--blog-rule) solid var(--accent-dark);
  border-radius: var(--radius);
  background: var(--panel);
}

.stat-card:nth-child(even) {
  border-top-color: var(--text);
  background: var(--panel-2);
}

.stat-num {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: var(--blog-h2);
  font-weight: var(--weight-bold);
  line-height: 1.4;
}

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

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

.check-list li {
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
}

.verdict {
  margin-block: 1.5rem;
  padding: 1.25rem 1.5rem;
  border-inline-start: var(--blog-rule) solid var(--accent-dark);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--accent) 10%, var(--panel));
  color: var(--text);
}

.promo-block {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin-block: 2rem;
  padding: 1.75rem;
  border: 1px solid var(--border-strong);
  border-top: var(--blog-rule) solid var(--accent-dark);
  border-radius: var(--radius);
  background: linear-gradient(115deg, var(--panel), var(--panel-2));
  box-shadow: var(--shadow-card);
}

.promo-copy {
  flex: 1 1 20rem;
  min-width: 0;
}

.promo-block h2 {
  margin: 0 0 0.75rem;
  font-size: var(--blog-h2);
  line-height: 1.5;
}

.promo-block p {
  margin: 0;
  color: var(--muted);
  font-size: var(--blog-body);
  line-height: 1.8;
}

.promo-block .cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 0;
}

.promo-block .btn-primary {
  border: 1px solid var(--text);
  background: var(--window);
  color: var(--text);
}

.promo-block .btn-ghost {
  border: 1px solid var(--text);
  background: none;
  color: var(--text);
}

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

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

#related-posts > h2 {
  margin: 0 0 1.25rem;
  font-size: var(--blog-h2);
  line-height: 1.5;
}

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

.related-grid .article-card {
  padding: 1.25rem;
}

.related-grid .article-card h3 {
  font-size: var(--blog-body);
}

.related-grid .article-card p {
  font-size: var(--blog-small);
}

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

.post-nav-card {
  display: block;
  min-width: 0;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  color: var(--text);
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: border-color var(--speed-card) var(--ease-out),
    transform var(--speed-card) var(--ease-out);
}

.post-nav-card:hover,
.post-nav-card:focus-visible {
  border-color: var(--accent-dark);
  transform: translateY(var(--blog-lift));
}

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

.post-nav-label,
.post-nav-card time {
  display: block;
  color: var(--muted);
  font-size: var(--blog-small);
  line-height: 1.8;
}

.post-nav-card strong {
  display: block;
  margin-block: 0.65rem;
  font-size: var(--blog-body);
  line-height: 1.8;
}

.float-cta {
  position: fixed;
  right: var(--gutter);
  bottom: max(1.25rem, env(safe-area-inset-bottom));
  z-index: 30;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  max-width: calc(100vw - var(--gutter) * 2);
  min-height: 2.75rem;
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--accent-dark);
  border-radius: var(--pill);
  background: linear-gradient(110deg, var(--accent), var(--accent-2));
  color: var(--text);
  box-shadow: var(--shadow-float);
  font-family: var(--font-body);
  font-size: var(--blog-small);
  font-weight: var(--weight-bold);
  text-decoration: none;
  overflow-wrap: anywhere;
}

.float-cta svg {
  flex: 0 0 auto;
  width: 1.15rem;
  height: 1.15rem;
  fill: currentColor;
}

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

  .article-body th,
  .article-body td,
  article[data-blog-article] th,
  article[data-blog-article] td {
    min-width: 8rem;
  }

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

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

  .blog-list-wrap,
  .breadcrumbs,
  .breadcrumb,
  .article-hero,
  .reading-wrap {
    padding-inline: max(1rem, var(--gutter));
  }

  .article-hero::before,
  .article-hero::after {
    inset-inline: max(1rem, var(--gutter));
  }

  .blog-list-hero {
    margin-top: 1.5rem;
  }

  .blog-card-grid,
  .stat-grid,
  #post-nav {
    grid-template-columns: 1fr;
  }

  .article-card {
    padding: 1.25rem;
  }

  .promo-block {
    padding: 1.5rem;
  }

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

  .float-cta {
    right: 1rem;
    bottom: max(1rem, env(safe-area-inset-bottom));
    max-width: calc(100vw - 2rem);
    padding: 0.7rem 1rem;
  }

  body:has(.float-cta) {
    padding-bottom: 5.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .article-card,
  .post-nav-card,
  .blog-filter,
  .float-cta {
    transition: none;
    animation: none;
  }

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