:root {
  --blog-reading-width: 56rem;
  --blog-leading: 1.9;
  --blog-title-spacing: -0.015em;
}

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

.blog-list-main {
  padding-block: 2rem 4rem;
}

.blog-list-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2rem, 6vw, 4rem) clamp(1.5rem, 5vw, 4rem);
  border: 1px solid var(--border);
  border-radius: var(--r-stage);
  background: linear-gradient(145deg, var(--lilac-100), var(--bg-panel));
}

.blog-list-hero::after {
  content: "";
  display: block;
  width: 4rem;
  margin-top: 2rem;
  border-top: 3px dashed var(--accent);
}

.blog-kicker {
  margin: 0 0 1rem;
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: var(--size-small);
  font-weight: var(--weight-strong);
}

.blog-list-hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: var(--weight-display);
  line-height: 1.3;
}

.blog-list-hero > p:not(.blog-kicker) {
  max-width: 42rem;
  margin-bottom: 1.5rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.blog-list-hero h1,
.article-hero h1,
.article-card h3,
.prose h2,
.prose h3,
.article-body h2,
.article-body h3,
.post-content h2,
.post-content h3,
[data-article-body] h2,
[data-article-body] h3 {
  display: block;
  text-wrap: pretty;
  letter-spacing: var(--blog-title-spacing);
  overflow-wrap: anywhere;
}

.blog-text-link,
.article-read-link {
  color: var(--accent-dark);
  font-weight: var(--weight-strong);
  text-underline-offset: 0.22em;
}

.blog-catalog {
  padding-block: 3rem;
}

.blog-catalog-heading {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin-bottom: 1rem;
}

.blog-catalog-heading h2 {
  margin: 0;
  font-size: 1.5rem;
}

#blog-results-status {
  margin: 0;
  color: var(--text-muted);
  font-size: var(--size-small);
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.75rem;
}

.blog-filters button {
  min-height: 2.75rem;
  padding: 0.55rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--bg-panel);
  color: var(--text-muted);
  font: inherit;
  cursor: pointer;
  transition: border-color var(--time-fast) var(--ease), background var(--time-fast) var(--ease);
}

.blog-filters button[aria-pressed="true"] {
  border-color: var(--accent-dark);
  background: var(--accent-dark);
  color: var(--on-accent);
}

.blog-card-grid,
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

.blog-card-grid > *,
.related-grid > *,
.article-hero > *,
.stat-grid > * {
  min-width: 0;
}

.article-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  background: var(--bg-panel);
  transition: border-color var(--time-fast) var(--ease), transform var(--time-fast) var(--ease);
}

.article-card:hover,
.article-card:focus-within {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 0.6rem;
  color: var(--text-muted);
  font-size: var(--size-small);
}

.article-meta time,
.post-nav-card time {
  font-family: var(--font-mono);
  font-size: var(--size-small);
}

.article-card .tag,
.article-hero .tag {
  max-width: 100%;
  padding: 0.3rem 0.65rem;
  border-radius: var(--r-small);
  background: var(--lilac-100);
  color: var(--accent-dark);
  white-space: normal;
  overflow-wrap: anywhere;
}

.article-card h3 {
  margin: 0;
  font-size: 1.2rem;
  line-height: 1.65;
}

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

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

.article-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.8;
}

.article-card .article-read-link {
  align-self: flex-start;
  margin-top: auto;
  padding-top: 0.25rem;
}

.blog-empty {
  grid-column: 1 / -1;
  padding: 2rem;
  border: 1px dashed var(--border);
  border-radius: var(--r-card);
  background: var(--bg-panel);
  line-height: 1.8;
}

.reading-wrap,
.article-hero,
.breadcrumbs,
.breadcrumb,
.promo-block:not(.blog-list-promo),
#related-posts,
#post-nav {
  box-sizing: border-box;
  width: 100%;
  max-width: calc(var(--blog-reading-width) + var(--gutter) + var(--gutter));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

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

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

.article-hero {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 1fr);
  align-items: start;
  gap: 2rem;
  padding-block: 0.75rem 2rem;
}

.article-hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: var(--weight-display);
  line-height: 1.4;
}

.article-hero .article-summary,
.article-hero .hero-summary,
.article-hero .article-heading > p,
.article-hero .hero-main > p {
  margin: 0;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.9;
}

.article-hero > .article-meta,
.article-hero > .hero-meta {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  gap: 0.85rem;
  grid-column: 2;
  grid-row: 1;
  padding: 2.4rem 1rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  background: var(--bg-panel);
  color: var(--text-muted);
  font-size: var(--size-small);
  line-height: 1.7;
  overflow-wrap: anywhere;
}

.article-hero > .article-meta::before,
.article-hero > .hero-meta::before {
  content: "";
  position: absolute;
  inset: 1rem 1rem auto;
  border-top: 2px dashed var(--accent);
}

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

.article-hero .read-time,
.article-hero .reading-time {
  padding-top: 0.7rem;
  border-top: 1px solid var(--border);
}

.prose,
.article-body,
.post-content,
[data-article-body] {
  min-width: 0;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: var(--blog-leading);
  overflow-wrap: anywhere;
}

.prose h2,
.article-body h2,
.post-content h2,
[data-article-body] h2 {
  margin: 2.4rem 0 1rem;
  font-size: clamp(1.3rem, 2.6vw, 1.6rem);
  font-weight: var(--weight-strong);
  line-height: 1.55;
  scroll-margin-top: var(--anchor-offset);
}

.prose h2::before,
.article-body h2::before,
.post-content h2::before,
[data-article-body] h2::before {
  content: "";
  display: inline-block;
  width: 1rem;
  margin-inline-end: 0.65rem;
  border-top: 3px solid var(--accent);
  vertical-align: middle;
}

.prose h3,
.article-body h3,
.post-content h3,
[data-article-body] h3 {
  margin: 1.7rem 0 0.75rem;
  font-size: clamp(1.15rem, 2vw, 1.3rem);
  line-height: 1.6;
}

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

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

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

.prose li,
.article-body li,
.post-content li,
[data-article-body] li {
  margin-block: 0.4rem;
}

.prose a,
.article-body a,
.post-content a,
[data-article-body] a {
  color: var(--accent-dark);
  text-underline-offset: 0.22em;
}

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

.prose blockquote,
.article-body blockquote,
.post-content blockquote,
[data-article-body] blockquote {
  margin: 1.5rem 0;
  padding: 1.2rem 1.5rem;
  border-inline-start: 3px solid var(--accent);
  border-radius: var(--r-small);
  background: var(--bg-panel-2);
  color: var(--text-muted);
}

.table-scroll {
  max-width: 100%;
  overflow-x: auto;
  margin-block: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--r-small);
}

:is(.prose, .article-body, .post-content, [data-article-body]) table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  line-height: 1.7;
}

:is(.prose, .article-body, .post-content, [data-article-body]) caption {
  padding: 0.8rem;
  text-align: start;
  font-weight: var(--weight-strong);
}

:is(.prose, .article-body, .post-content, [data-article-body]) th,
:is(.prose, .article-body, .post-content, [data-article-body]) td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border);
  text-align: start;
  vertical-align: top;
}

:is(.prose, .article-body, .post-content, [data-article-body]) thead th {
  background: var(--accent-dark);
  color: var(--on-accent);
}

:is(.prose, .article-body, .post-content, [data-article-body]) tbody tr {
  background: var(--bg-panel);
}

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

:is(.prose, .article-body, .post-content, [data-article-body]) tbody tr:hover {
  background: var(--lilac-100);
}

:is(.prose, .article-body, .post-content, [data-article-body]) code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  overflow-wrap: anywhere;
}

:is(.prose, .article-body, .post-content, [data-article-body]) :not(pre) > code {
  padding: 0.12rem 0.35rem;
  border-radius: var(--r-small);
  background: var(--bg-panel-2);
  color: var(--accent-dark);
}

:is(.prose, .article-body, .post-content, [data-article-body]) pre {
  position: relative;
  max-width: 100%;
  overflow-x: auto;
  margin-block: 1.5rem;
  padding: 2.6rem 1.25rem 1.25rem;
  border: 1px solid var(--accent-dark);
  border-radius: var(--r-card);
  background: var(--text);
  color: var(--bg-panel);
  line-height: 1.8;
}

:is(.prose, .article-body, .post-content, [data-article-body]) pre::before {
  content: "YiYiVPN / 配置笔记";
  position: absolute;
  top: 0.6rem;
  left: 1.25rem;
  color: var(--lilac-100);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

:is(.prose, .article-body, .post-content, [data-article-body]) pre code {
  padding: 0;
  background: inherit;
  color: inherit;
  white-space: pre;
  overflow-wrap: normal;
}

.callout,
.verdict {
  position: relative;
  margin-block: 1.5rem;
  padding: 1.15rem 1.4rem;
  border: 1px solid var(--border);
  border-inline-start: 4px solid var(--accent);
  border-radius: var(--r-small);
  background: color-mix(in srgb, var(--accent) 7%, var(--bg-panel));
}

.callout {
  padding-inline-start: 3.5rem;
}

.callout::before {
  content: "i";
  position: absolute;
  top: 1.25rem;
  left: 1.15rem;
  display: inline-block;
  width: 1.5rem;
  height: 1.5rem;
  border: 1px solid currentColor;
  border-radius: var(--r-round);
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-weight: var(--weight-strong);
  line-height: 1.4rem;
  text-align: center;
}

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

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

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

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

.verdict > strong:first-child {
  color: var(--accent-dark);
}

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

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr));
  gap: 1rem;
  margin-block: 1.5rem;
}

.stat-card {
  padding: 1.3rem;
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: var(--r-card);
  background: var(--lilac-100);
}

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

.stat-num {
  display: block;
  color: var(--accent-dark);
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: var(--weight-display);
  line-height: 1.4;
}

.stat-label {
  display: block;
  margin-top: 0.4rem;
  color: var(--text-muted);
  font-size: var(--size-small);
}

:is(.prose, .article-body, .post-content, [data-article-body]) .check-list,
.check-list {
  padding: 0;
  list-style: none;
}

.check-list li {
  margin-block: 0.65rem;
  padding: 1rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: var(--r-small);
  background: var(--bg-panel);
  list-style: none;
}

.promo-block {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-block: 2.5rem;
  padding-block: 2rem;
  border-radius: var(--r-card);
  background: linear-gradient(115deg, var(--accent-dark), var(--accent));
  color: var(--on-accent);
}

.promo-block:not(.blog-list-promo) {
  width: calc(100% - var(--gutter) - var(--gutter));
  max-width: var(--blog-reading-width);
  padding-inline: 1.5rem;
}

.blog-list-promo {
  padding-inline: clamp(1.5rem, 4vw, 3rem);
}

.promo-block h2 {
  margin: 0 0 0.6rem;
  color: var(--on-accent);
  font-family: var(--font-display);
  font-size: 1.6rem;
}

.promo-block p {
  margin: 0;
  color: var(--on-accent);
  line-height: 1.8;
}

.promo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.promo-block .btn {
  border: 1px solid var(--on-accent);
  background: var(--on-accent);
  color: var(--accent-dark);
}

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

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

#related-posts > h2 {
  margin: 0 0 1.25rem;
  font-size: 1.5rem;
  text-wrap: pretty;
  letter-spacing: var(--blog-title-spacing);
}

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

#post-nav[hidden],
#related-posts[hidden] {
  display: none;
}

.post-nav-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
  min-width: 0;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  background: var(--bg-panel);
  color: var(--text);
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: border-color var(--time-fast) var(--ease), transform var(--time-fast) var(--ease);
}

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

.post-nav-card:hover,
.post-nav-card:focus-visible {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.post-nav-label {
  color: var(--accent-dark);
  font-size: var(--size-small);
  font-weight: var(--weight-strong);
}

.post-nav-card strong {
  line-height: 1.7;
}

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

.float-cta {
  position: fixed;
  right: max(1rem, env(safe-area-inset-right));
  bottom: max(1rem, env(safe-area-inset-bottom));
  z-index: 30;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  max-width: calc(100vw - 2rem);
  min-height: 3rem;
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--on-accent);
  border-radius: var(--r-pill);
  background: var(--accent-dark);
  color: var(--on-accent);
  font-family: var(--font-body);
  font-weight: var(--weight-button);
  text-decoration: none;
  box-shadow: var(--shadow-slide);
}

.float-cta svg {
  flex: 0 0 auto;
  width: 1.2rem;
  height: 1.2rem;
  fill: currentColor;
}

.blog-index :is(a, button):focus-visible,
.blog-article :is(a, button, summary, [tabindex]):focus-visible,
.float-cta:focus-visible,
#related-posts a:focus-visible,
#post-nav a:focus-visible,
.table-scroll:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

@media (max-width: 1000px) {
  .blog-card-grid,
  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

  :is(.prose, .article-body, .post-content, [data-article-body]) th,
  :is(.prose, .article-body, .post-content, [data-article-body]) td {
    min-width: 8rem;
  }

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

  .article-hero > .article-meta,
  .article-hero > .hero-meta {
    grid-column: 1;
    grid-row: 1;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.65rem;
    padding: 1rem;
  }

  .article-hero > .article-meta::before,
  .article-hero > .hero-meta::before {
    content: none;
  }

  .article-hero > .article-heading,
  .article-hero > .hero-main {
    grid-row: 2;
  }

  .article-hero .read-time,
  .article-hero .reading-time {
    padding-top: 0;
    border-top: 0;
  }
}

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

  .blog-list-main {
    padding-block: 1.25rem 2rem;
  }

  .blog-list-hero {
    padding: 2rem 1.5rem;
    border-radius: var(--r-mobile-stage);
  }

  .blog-card-grid,
  .related-grid,
  #post-nav {
    grid-template-columns: minmax(0, 1fr);
  }

  .post-nav-next {
    grid-column: 1;
  }

  .article-card {
    padding: 1.25rem;
  }

  .reading-wrap,
  .article-hero,
  .breadcrumbs,
  .breadcrumb,
  #related-posts,
  #post-nav {
    padding-inline: max(16px, var(--gutter));
  }

  .promo-block {
    align-items: flex-start;
    margin-block: 2rem;
  }

  .promo-actions {
    width: 100%;
  }

  .float-cta {
    right: max(1rem, env(safe-area-inset-right));
    bottom: max(0.75rem, env(safe-area-inset-bottom));
    min-height: 2.75rem;
    padding: 0.65rem 1rem;
    font-size: var(--size-small);
  }

  body:has(.float-cta) {
    padding-bottom: calc(5rem + env(safe-area-inset-bottom));
    scroll-padding-bottom: 5rem;
  }
}

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

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