:root {
  --blog-reading: 56rem;
  --blog-list-title: clamp(2rem, 4.5vw, 3rem);
  --blog-article-title: clamp(1.85rem, 3.5vw, 2.6rem);
  --blog-section-title: clamp(1.3rem, 2.5vw, 1.6rem);
  --blog-subsection-title: 1.3rem;
  --blog-card-title: 1.25rem;
  --blog-body-size: 1rem;
  --blog-meta-size: .8125rem;
  --blog-small-size: .875rem;
  --blog-lede-size: 1.0625rem;
  --blog-body-leading: 1.9;
  --blog-heading-leading: 1.45;
  --blog-rule-size: 4px;
  --blog-focus-size: 3px;
  --blog-focus-offset: 4px;
  --blog-lift: -3px;
  --blog-ink-panel: var(--text);
  --blog-ink-text: var(--panel);
  --blog-warning-tint: color-mix(in srgb, var(--warn) 10%, var(--panel));
  --blog-success-tint: color-mix(in srgb, var(--success) 9%, var(--panel));
  --blog-soft-tint: color-mix(in srgb, var(--panel-2) 55%, var(--panel));
  --blog-rule-tint: color-mix(in srgb, var(--accent) 24%, var(--border));
  --blog-promo-start: color-mix(in srgb, var(--accent) 9%, var(--panel));
  --blog-promo-end: color-mix(in srgb, var(--apricot) 12%, var(--panel));
  --blog-terminal-rule: color-mix(in srgb, var(--panel) 28%, var(--text));
}

.blog-index,
.blog-article {
  color: var(--text);
  background: var(--bg);
  font-family: var(--font-body);
}

.blog-list-shell,
.reading-wrap,
.article-hero,
.breadcrumbs,
.article-card,
.promo-block,
#related-posts,
#post-nav {
  box-sizing: border-box;
  min-width: 0;
}

.blog-list-shell {
  padding-bottom: calc(var(--float-space) + 2rem);
}

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

.reading-wrap .article-hero,
.reading-wrap .breadcrumbs,
.reading-wrap > .reading-wrap {
  width: 100%;
  max-width: none;
  padding-inline: 0;
}

.reading-wrap .article-hero::before {
  inset-inline: 0;
}

.breadcrumbs {
  margin-top: 1.5rem;
  margin-bottom: 1.75rem;
  font-size: var(--blog-small-size);
  line-height: 1.8;
  color: var(--muted);
}

.blog-list-shell > .breadcrumbs {
  max-width: none;
  padding-inline: 0;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem .6rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumbs li {
  min-width: 0;
  overflow-wrap: anywhere;
}

.breadcrumbs li + li::before {
  content: "›";
  margin-inline-end: .6rem;
  color: var(--muted);
}

.breadcrumbs a {
  color: var(--text);
  text-underline-offset: .2em;
}

.blog-list-hero,
.article-hero {
  position: relative;
  color: var(--text);
  background: none;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

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

.blog-kicker {
  margin: 0 0 1rem;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--blog-small-size);
  line-height: 1.7;
}

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

.blog-list-hero h1 {
  max-width: 22ch;
  margin: 0 0 1rem;
  font-size: var(--blog-list-title);
  font-weight: var(--weight-display);
  line-height: 1.25;
}

.blog-intro {
  max-width: 46rem;
  margin: 0;
  color: var(--muted);
  font-size: var(--blog-lede-size);
  line-height: var(--blog-body-leading);
}

.blog-catalog {
  padding-top: 1.75rem;
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

.blog-filter {
  min-height: 2.75rem;
  padding: .55rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  color: var(--text);
  background: var(--panel);
  font: inherit;
  font-size: var(--blog-small-size);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease), border-color var(--duration-fast) var(--ease);
}

.blog-filter:hover,
.blog-filter[aria-pressed="true"] {
  border-color: var(--text);
  background: var(--panel-2);
}

.blog-filter[aria-pressed="true"] {
  font-weight: var(--weight-bold);
}

.blog-list-status {
  margin: 1rem 0 1.5rem;
  color: var(--muted);
  font-size: var(--blog-small-size);
  line-height: 1.8;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.article-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.75rem;
  border: 1px solid var(--border);
  border-radius: var(--r-panel);
  color: var(--text);
  background: var(--panel);
  box-shadow: var(--shadow-panel);
  transition: transform var(--duration-fast) var(--ease), border-color var(--duration-fast) var(--ease);
}

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

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: .5rem .75rem;
  color: var(--muted);
  font-size: var(--blog-meta-size);
  line-height: 1.7;
}

.article-meta .tag {
  padding: .25rem .65rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  color: var(--text);
  background: var(--panel-2);
  font-size: inherit;
}

.article-meta time {
  font-family: var(--font-mono);
  font-size: inherit;
  font-variant-numeric: tabular-nums;
}

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

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

.article-card h2 a:hover,
.article-card h3 a:hover {
  text-decoration: underline;
  text-underline-offset: .2em;
}

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

.article-read-link {
  align-self: flex-start;
  margin-top: auto;
  padding-block: .25rem;
  color: var(--text);
  font-size: var(--blog-small-size);
  font-weight: var(--weight-bold);
  text-decoration: underline;
  text-underline-offset: .3em;
}

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

.blog-empty p {
  margin: 0;
}

.blog-empty p + p {
  margin-top: .75rem;
}

.blog-empty a {
  color: var(--text);
}

.article-hero {
  padding-block: 1.5rem 1.75rem;
  margin-bottom: 1.75rem;
}

.article-hero::before {
  position: absolute;
  content: "";
  top: 0;
  inset-inline: var(--gutter);
  height: var(--blog-rule-size);
  background: var(--accent);
}

.article-hero::after {
  position: absolute;
  content: "";
  bottom: 0;
  inset-inline: var(--gutter);
  height: 1px;
  background: var(--border);
}

.reading-wrap .article-hero::after {
  inset-inline: 0;
}

.article-hero .article-meta {
  margin: 0 0 1.1rem;
}

.article-hero .article-meta > time,
.article-hero .read-time,
.article-hero .reading-time,
.article-hero [data-readtime] {
  padding: .25rem .65rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  color: var(--muted);
  font-size: var(--blog-meta-size);
  line-height: 1.7;
}

.article-hero .tag {
  color: var(--panel);
  border-color: var(--text);
  background: var(--text);
}

.article-hero h1 {
  margin: 0 0 1.2rem;
  max-width: none;
  color: var(--text);
  font-size: var(--blog-article-title);
  font-weight: var(--weight-display);
  line-height: var(--blog-heading-leading);
}

.article-hero .article-summary,
.article-hero .article-deck,
.article-hero .article-lead,
.article-hero > p:not(.article-meta) {
  margin: 0;
  color: var(--muted);
  font-size: var(--blog-lede-size);
  line-height: var(--blog-body-leading);
}

.prose,
[data-article-body] {
  min-width: 0;
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--blog-body-size);
  line-height: var(--blog-body-leading);
  overflow-wrap: anywhere;
  counter-reset: blog-section;
}

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

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

.prose h2,
[data-article-body] h2 {
  margin-block: 2.25rem 1rem;
  color: var(--text);
  font-size: var(--blog-section-title);
  font-weight: var(--weight-heavy);
  line-height: 1.6;
  scroll-margin-top: var(--anchor-offset);
}

.prose h2::before,
[data-article-body] h2::before {
  display: inline-block;
  content: "";
  width: 1.4rem;
  height: var(--blog-rule-size);
  margin-inline-end: .65rem;
  vertical-align: .25em;
  background: var(--text);
  border-radius: var(--r-pill);
}

.prose h3,
[data-article-body] h3 {
  margin-block: 1.65rem .75rem;
  font-size: var(--blog-subsection-title);
  font-weight: var(--weight-bold);
  line-height: 1.65;
  scroll-margin-top: var(--anchor-offset);
}

.prose a,
[data-article-body] a {
  color: var(--text);
  text-decoration-thickness: 1px;
  text-underline-offset: .23em;
}

.prose a:hover,
[data-article-body] a:hover {
  text-decoration-thickness: 2px;
}

.prose ul,
.prose ol,
[data-article-body] ul,
[data-article-body] ol {
  margin-block: 0 1.5rem;
  padding-inline-start: 1.5rem;
}

.prose li,
[data-article-body] li {
  margin-block: .45rem;
  padding-inline-start: .25rem;
}

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

.prose hr,
[data-article-body] hr {
  margin-block: 2rem;
  border: 0;
  border-top: 1px solid var(--border);
}

.prose img,
.prose svg,
[data-article-body] img,
[data-article-body] svg {
  max-width: 100%;
  height: auto;
}

.prose figure,
[data-article-body] figure {
  margin: 1.5rem 0;
}

.prose figcaption,
[data-article-body] figcaption {
  margin-top: .6rem;
  color: var(--muted);
  font-size: var(--blog-small-size);
}

.prose :not(pre) > code,
[data-article-body] :not(pre) > code {
  padding: .12em .35em;
  border-radius: var(--r-marker);
  color: var(--text);
  background: var(--panel-2);
  font-family: var(--font-mono);
  font-size: .9em;
  overflow-wrap: anywhere;
  white-space: normal;
}

.prose pre,
[data-article-body] pre {
  position: relative;
  max-width: 100%;
  margin: 1.5rem 0;
  padding: 2.9rem 1.4rem 1.4rem;
  overflow-x: auto;
  border: 1px solid var(--blog-terminal-rule);
  border-radius: var(--r-groove);
  color: var(--blog-ink-text);
  background: var(--blog-ink-panel);
  font-family: var(--font-mono);
  font-size: var(--blog-small-size);
  line-height: 1.8;
  white-space: pre;
  overflow-wrap: normal;
}

.prose pre::before,
[data-article-body] pre::before {
  position: absolute;
  content: "VPNYP / 配置笔记";
  top: .65rem;
  left: 1.4rem;
  color: var(--blog-ink-text);
  font-size: var(--blog-meta-size);
  letter-spacing: .04em;
}

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

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

.prose table,
[data-article-body] table {
  width: 100%;
  margin: 1.5rem 0;
  border-collapse: collapse;
  color: var(--text);
  background: var(--panel);
  font-size: var(--blog-small-size);
  line-height: 1.8;
}

.prose .table-scroll table,
[data-article-body] .table-scroll table {
  min-width: var(--table-min);
  margin: 0;
}

.prose caption,
[data-article-body] caption {
  padding: .75rem 1rem;
  color: var(--muted);
  text-align: start;
  background: var(--panel);
}

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

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

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

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

.prose blockquote,
[data-article-body] blockquote,
.callout {
  position: relative;
  margin: 1.5rem 0;
  padding: 1.2rem 1.4rem 1.2rem 3.4rem;
  border: 1px solid var(--border);
  border-inline-start: var(--blog-rule-size) solid var(--text-soft);
  border-radius: var(--r-sm);
  color: var(--text);
  background: var(--panel);
}

.prose blockquote::before,
[data-article-body] blockquote::before,
.callout::before {
  position: absolute;
  content: "i";
  inset-inline-start: 1rem;
  top: 1.35rem;
  width: 1.45rem;
  height: 1.45rem;
  border: 1px solid currentColor;
  border-radius: var(--r-round);
  font-family: var(--font-mono);
  font-size: var(--blog-small-size);
  font-weight: var(--weight-bold);
  line-height: 1.4rem;
  text-align: center;
}

.callout.warning,
.callout.is-warning,
.callout-warning {
  border-inline-start-color: var(--warn);
  background: var(--blog-warning-tint);
}

.callout.warning::before,
.callout.is-warning::before,
.callout-warning::before {
  content: "!";
}

.callout.success,
.callout.is-success,
.callout-success {
  border-inline-start-color: var(--success);
  background: var(--blog-success-tint);
}

.callout.success::before,
.callout.is-success::before,
.callout-success::before {
  content: "＋";
}

.prose blockquote > :last-child,
[data-article-body] blockquote > :last-child,
.callout > :last-child {
  margin-bottom: 0;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-block: 1.5rem;
}

.stat-card {
  min-width: 0;
  padding: 1.4rem;
  border: 1px solid var(--border);
  border-top: var(--blog-rule-size) solid var(--text-soft);
  border-radius: var(--r-panel);
  color: var(--text);
  background: var(--panel);
  box-shadow: var(--shadow-panel);
}

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

.stat-num {
  display: block;
  margin-bottom: .4rem;
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: var(--weight-display);
  font-variant-numeric: tabular-nums;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

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

.prose .check-list,
[data-article-body] .check-list,
.check-list {
  display: grid;
  gap: .65rem;
  margin-block: 1.5rem;
  padding: 0;
  list-style: none;
}

.prose .check-list li,
[data-article-body] .check-list li,
.check-list li {
  min-width: 0;
  margin: 0;
  padding: .9rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--panel);
  list-style: none;
}

.verdict {
  margin-block: 1.5rem;
  padding: 1.1rem 1.3rem;
  border: 1px solid var(--blog-rule-tint);
  border-inline-start: var(--blog-rule-size) solid var(--accent);
  border-radius: var(--r-sm);
  color: var(--text);
  background: var(--blog-promo-start);
}

.verdict strong:first-child {
  font-weight: var(--weight-heavy);
}

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

.promo-block {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem 2rem;
  margin-block: 2.5rem 2rem;
  padding: 1.8rem;
  border: 1px solid var(--border-warm);
  border-radius: var(--r-panel);
  color: var(--text);
  background: linear-gradient(115deg, var(--blog-promo-start), var(--blog-promo-end));
  box-shadow: var(--shadow-panel);
}

.promo-block::before {
  position: absolute;
  content: "";
  inset: .45rem;
  border: 1px dashed var(--border-warm);
  border-radius: var(--r-groove);
  pointer-events: none;
}

.promo-block > * {
  position: relative;
  min-width: 0;
}

.promo-brand {
  font-family: var(--font-display);
  font-size: var(--fs-brand);
  font-weight: var(--weight-display);
  letter-spacing: var(--tracking-latin);
}

.promo-block p {
  max-width: 35rem;
  margin: .5rem 0 0;
  color: var(--text);
  font-size: var(--blog-body-size);
  line-height: 1.8;
}

.promo-block .cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin: 0;
}

.promo-block .btn {
  flex-shrink: 0;
}

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

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

.promo-block .btn:hover {
  color: var(--text);
  background: var(--panel-2);
}

#related-posts {
  margin-block: 0;
  padding-block: 1.5rem;
}

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

#related-posts > h2 {
  margin: 0 0 1.2rem;
  color: var(--text);
  font-size: var(--blog-section-title);
  font-weight: var(--weight-heavy);
  line-height: 1.6;
}

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

.related-card {
  padding: 1.25rem;
  box-shadow: none;
}

.related-card h3 {
  font-size: var(--blog-body-size);
  line-height: 1.7;
}

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

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

.post-nav-card {
  display: flex;
  flex-direction: column;
  gap: .65rem;
  min-width: 0;
  padding: 1.3rem;
  border: 1px solid var(--border);
  border-top: var(--blog-rule-size) solid var(--border-warm);
  border-radius: var(--r-sm);
  color: var(--text);
  background: var(--panel);
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: transform var(--duration-fast) var(--ease), border-color var(--duration-fast) var(--ease);
}

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

.post-nav-label,
.post-nav-card time {
  color: var(--muted);
  font-size: var(--blog-meta-size);
  line-height: 1.7;
}

.post-nav-card time {
  margin-top: auto;
  font-family: var(--font-mono);
}

.post-nav-card strong {
  font-size: var(--blog-body-size);
  font-weight: var(--weight-bold);
  line-height: 1.8;
}

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

.blog-skip {
  position: absolute;
  z-index: 100;
  top: .75rem;
  left: var(--gutter);
  padding: .7rem 1rem;
  border: 1px solid var(--text);
  border-radius: var(--r-pill);
  color: var(--text);
  background: var(--panel);
  transform: translateY(-200%);
}

.blog-skip:focus {
  transform: none;
}

.blog-filter:focus-visible,
.article-card a:focus-visible,
.post-nav-card:focus-visible,
.breadcrumbs a:focus-visible,
.promo-block a:focus-visible,
.blog-skip:focus-visible,
.prose a:focus-visible,
[data-article-body] a:focus-visible,
.table-scroll:focus-visible {
  outline: var(--blog-focus-size) solid var(--text-soft);
  outline-offset: var(--blog-focus-offset);
}

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

  .prose .table-scroll table,
  [data-article-body] .table-scroll table {
    display: table;
    width: 100%;
    max-width: none;
  }

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

  .related-card {
    padding: 1.5rem;
  }
}

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

  .article-grid,
  .stat-grid,
  #post-nav {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .article-card,
  .promo-block {
    padding: 1.25rem;
  }

  .blog-list-hero {
    padding-block: 1.25rem 1.5rem;
  }

  .article-hero {
    padding-block: 1.25rem 1.5rem;
    margin-bottom: 1.5rem;
  }

  .article-meta {
    gap: .45rem .6rem;
  }

  .promo-block .cta-row {
    width: 100%;
  }

  .prose blockquote,
  [data-article-body] blockquote,
  .callout {
    padding-inline: 3rem 1rem;
  }

  .prose blockquote::before,
  [data-article-body] blockquote::before,
  .callout::before {
    inset-inline-start: .75rem;
  }

  #post-nav {
    padding-bottom: 1.5rem;
  }
}

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

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