:root {
  --blog-reading: 56rem;
  --blog-gutter: max(1.5rem, var(--gutter));
  --blog-gap: 1.25rem;
  --blog-card-pad: 1.5rem;
  --blog-line: 1px;
  --blog-transition: 160ms;
  --blog-tracking: -0.015em;
  --blog-overlay: color-mix(in srgb, var(--text) 58%, transparent);
  --blog-soft: color-mix(in srgb, var(--accent) 9%, var(--panel));
  --blog-success-tint: color-mix(in srgb, var(--success) 9%, var(--panel));
  --blog-warn-tint: color-mix(in srgb, var(--warn) 12%, var(--panel));
}

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

.blog-index *,
.article-page *,
.signup-modal * {
  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,
#related-posts h2,
#related-posts h3,
#post-nav strong {
  text-wrap: pretty;
  letter-spacing: var(--blog-tracking);
  overflow-wrap: anywhere;
  font-family: var(--font-display);
}

.blog-index a:focus-visible,
.article-page a:focus-visible,
.blog-index button:focus-visible,
.article-page button:focus-visible,
.signup-modal :focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.blog-skip {
  position: fixed;
  inset-block-start: 1rem;
  inset-inline-start: 1rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  border-radius: var(--r-sm);
  background: var(--panel);
  color: var(--accent-dark);
  transform: translateY(-200%);
}

.blog-skip:focus {
  transform: translateY(0);
}

.blog-list-hero {
  position: relative;
  isolation: isolate;
  padding-block: 3rem 2rem;
}

.blog-list-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset-block: 1.5rem 1rem;
  inset-inline: 28% var(--gutter);
  background: var(--panel-2);
  border-radius: var(--r-md);
}

.blog-eyebrow {
  margin: 0 0 0.75rem;
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.blog-list-hero h1 {
  margin: 0;
  max-width: 18em;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.3;
}

.blog-intro {
  max-width: 40rem;
  margin-block: 1rem;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
}

.blog-text-link,
.article-read-link {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.25em;
  font-weight: 600;
}

.blog-list-section {
  padding-block: 0.75rem 3rem;
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.blog-filters button {
  min-height: 2.75rem;
  padding: 0.5rem 1rem;
  border: var(--blog-line) solid var(--border);
  border-radius: var(--r-pill);
  background: var(--panel);
  color: var(--muted);
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background var(--blog-transition), border-color var(--blog-transition);
}

.blog-filters button:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
}

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

.blog-result-status {
  min-height: 1.8em;
  margin-block: 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}

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

.blog-post-grid .article-card,
#related-posts .article-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: var(--blog-card-pad);
  border: var(--blog-line) solid var(--border);
  border-top: 3px solid var(--border);
  border-radius: var(--r-md);
  background: var(--panel);
  box-shadow: var(--shadow-small);
  opacity: 1;
  transition: border-color var(--blog-transition), transform var(--blog-transition);
}

.blog-post-grid .article-card:hover,
#related-posts .article-card:hover,
.blog-post-grid .article-card:focus-within,
#related-posts .article-card:focus-within {
  border-top-color: var(--accent);
  transform: translateY(-2px);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: center;
  gap: 0.5rem 0.75rem;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.6;
}

.article-meta .badge {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  border-radius: var(--r-chip);
  background: var(--accent);
  color: var(--panel);
  white-space: normal;
}

.article-meta time,
.article-meta .read-time,
.article-meta .reading-time {
  padding: 0.25rem 0.65rem;
  border: var(--blog-line) solid var(--border);
  border-radius: var(--r-chip);
  background: var(--panel);
}

.article-card h2,
.article-card h3 {
  margin: 1rem 0 0.65rem;
  font-size: 1.25rem;
  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 {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.article-card p {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.8;
}

.article-card .article-read-link {
  margin-top: auto;
  align-self: flex-start;
  font-size: 0.9rem;
}

.blog-empty {
  grid-column: 1 / -1;
  padding: var(--blog-card-pad);
  border: var(--blog-line) dashed var(--border);
  border-radius: var(--r-md);
  background: var(--panel);
  line-height: 1.8;
  color: var(--muted);
}

.breadcrumbs,
.breadcrumb,
.article-hero,
.reading-wrap,
.article-page > main > .promo-block,
.article-page > main > #related-posts,
.article-page > main > #post-nav {
  box-sizing: border-box;
  width: 100%;
  max-width: calc(var(--blog-reading) + var(--blog-gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--blog-gutter);
}

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

.breadcrumbs,
.breadcrumb {
  margin-top: 1.5rem;
  margin-bottom: 1rem;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.breadcrumbs ol,
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.6rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.article-hero {
  position: relative;
  isolation: isolate;
  padding-block: 2rem 1.75rem;
  margin-bottom: 1.25rem;
}

.article-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset-block: 0.25rem 0.75rem;
  inset-inline-start: calc(var(--blog-gutter) + 2.25rem);
  inset-inline-end: var(--blog-gutter);
  border-radius: var(--r-md);
  background: var(--blog-soft);
  border: var(--blog-line) solid var(--border);
  box-shadow: var(--shadow-small);
}

.article-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset-block-start: 0.25rem;
  inset-inline-end: calc(var(--blog-gutter) + 1.25rem);
  width: 3rem;
  height: 0.5rem;
  border-radius: var(--r-marker);
  background: var(--marker);
}

.article-hero h1 {
  position: relative;
  margin: 1rem 0;
  font-size: clamp(1.85rem, 3.6vw, 2.6rem);
  font-weight: 800;
  line-height: 1.45;
}

.article-hero .article-meta,
.article-hero .article-summary,
.article-hero .summary,
.article-hero .lede,
.article-hero > p {
  margin-inline-start: 0.75rem;
}

.article-hero .article-summary,
.article-hero .summary,
.article-hero .lede,
.article-hero > p {
  margin-block: 0.75rem 0;
  max-width: 50rem;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.85;
}

.article-body,
[data-article-body] {
  margin-inline: auto;
  max-width: var(--blog-reading);
  min-width: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.9;
  color: var(--text);
  overflow-wrap: anywhere;
  counter-reset: article-section;
}

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

.article-body h2,
[data-article-body] h2 {
  display: block;
  position: relative;
  margin: 2rem 0 1rem;
  padding-block-start: 0.75rem;
  border-top: var(--blog-line) solid var(--border);
  font-size: clamp(1.3rem, 2.5vw, 1.6rem);
  line-height: 1.6;
  text-wrap: pretty;
  letter-spacing: var(--blog-tracking);
  counter-increment: article-section;
  scroll-margin-top: var(--anchor-offset);
}

.article-body h2::before,
[data-article-body] h2::before {
  content: counter(article-section, decimal-leading-zero);
  display: inline-block;
  margin-inline-end: 0.65rem;
  padding: 0.1rem 0.45rem;
  border-radius: var(--r-sm);
  background: var(--accent);
  color: var(--panel);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  vertical-align: 0.15em;
}

.article-body h3,
[data-article-body] h3 {
  display: block;
  margin: 1.5rem 0 0.75rem;
  font-size: 1.3rem;
  line-height: 1.6;
  text-wrap: pretty;
  letter-spacing: var(--blog-tracking);
}

.article-body p,
[data-article-body] p {
  margin-block: 0.85rem 1.15rem;
}

.article-body a,
[data-article-body] a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

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

.article-body ul,
.article-body ol {
  padding-inline-start: 1.5rem;
}

.article-body code,
[data-article-body] code {
  padding: 0.1em 0.35em;
  border-radius: var(--r-sm);
  background: var(--panel-2);
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 0.88em;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.article-body pre,
[data-article-body] pre {
  position: relative;
  max-width: 100%;
  margin-block: 1.5rem;
  padding: 2.6rem 1.25rem 1.25rem;
  overflow-x: auto;
  border-radius: var(--r-md);
  background: var(--text);
  color: var(--panel);
  border: var(--blog-line) solid var(--text);
  line-height: 1.8;
}

.article-body pre::before,
[data-article-body] pre::before {
  content: "WeiVPN · 配置笔记";
  position: absolute;
  inset-block-start: 0.65rem;
  inset-inline-start: 1.25rem;
  color: var(--marker);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.article-body pre code,
[data-article-body] pre code {
  padding: 0;
  background: var(--clear);
  color: inherit;
  white-space: pre;
  overflow-wrap: normal;
  word-break: normal;
}

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

.article-body table,
[data-article-body] table {
  width: 100%;
  max-width: 100%;
  margin-block: 1rem;
  border-collapse: collapse;
  font-size: 0.95rem;
}

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

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

.article-body th,
.article-body td,
[data-article-body] th,
[data-article-body] td {
  min-width: 8rem;
  padding: 0.8rem 1rem;
  text-align: start;
  border-bottom: var(--blog-line) solid var(--border);
}

.article-body thead th,
[data-article-body] thead th {
  background: var(--accent-dark);
  color: var(--panel);
}

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

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

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

.article-body blockquote,
[data-article-body] blockquote,
.callout,
.verdict {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  border: var(--blog-line) solid var(--border);
  border-inline-start: 4px solid var(--accent);
  border-radius: var(--r-sm);
  background: var(--blog-soft);
  color: var(--text);
}

.article-body .callout,
[data-article-body] .callout {
  position: relative;
  padding-inline-start: 3.25rem;
}

.callout::before {
  content: "i";
  position: absolute;
  inset-inline-start: 1rem;
  inset-block-start: 1.1rem;
  display: inline-block;
  width: 1.4rem;
  height: 1.4rem;
  line-height: 1.4rem;
  text-align: center;
  border-radius: var(--r-circle);
  background: var(--accent);
  color: var(--panel);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8rem;
}

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

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

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

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

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

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

.stat-card {
  padding: 1.2rem;
  background: var(--blog-soft);
  border: var(--blog-line) solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: var(--r-md);
}

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

.stat-num {
  display: block;
  color: var(--accent-dark);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 3vw, 2rem);
  line-height: 1.4;
}

.stat-label {
  display: block;
  margin-top: 0.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

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

.check-list li {
  padding: 0.8rem 1rem;
  margin-block: 0.6rem;
  border: var(--blog-line) solid var(--border);
  border-radius: var(--r-sm);
  background: var(--panel);
}

.promo-block {
  position: relative;
  isolation: isolate;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  margin-block: 2rem 1.5rem;
  padding: 1.75rem;
  border: var(--blog-line) solid var(--accent-dark);
  border-radius: var(--r-md);
  background: linear-gradient(120deg, var(--accent-dark), var(--accent));
  color: var(--panel);
  box-shadow: var(--shadow-panel);
  overflow: hidden;
}

.promo-block::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0.5rem;
  border: var(--blog-line) solid color-mix(in srgb, var(--panel) 30%, transparent);
  border-radius: var(--r-sm);
  pointer-events: none;
}

.promo-block .promo-brand {
  color: var(--panel);
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  text-decoration: none;
}

.promo-block p {
  margin: 0.5rem 0 0;
  color: var(--panel);
  line-height: 1.8;
}

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

.promo-block .btn--primary:hover {
  background: var(--marker);
  border-color: var(--marker);
  color: var(--text);
}

.promo-block .btn--ghost {
  border-color: var(--panel);
  color: var(--panel);
  background: var(--clear);
}

.promo-block a:focus-visible {
  outline-color: var(--marker);
}

#related-posts {
  padding-block: 1.25rem 1.5rem;
}

#related-posts > h2 {
  margin: 0 0 1rem;
  font-size: 1.5rem;
  line-height: 1.6;
}

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

#related-posts .article-card {
  padding: 1.1rem;
}

#related-posts .article-card h3 {
  font-size: 1.1rem;
}

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

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

.post-nav-card {
  display: block;
  min-width: 0;
  padding: 1.25rem;
  border: var(--blog-line) solid var(--border);
  border-radius: var(--r-md);
  background: var(--panel);
  color: var(--text);
  text-decoration: none;
  transition: border-color var(--blog-transition), transform var(--blog-transition);
}

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

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

.post-nav-label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--accent);
  font-size: 0.85rem;
}

.post-nav-card strong {
  display: block;
  font-size: 1rem;
  line-height: 1.8;
}

.float-cta {
  position: fixed;
  z-index: 30;
  inset-inline-end: max(1rem, env(safe-area-inset-right));
  inset-block-end: max(1rem, env(safe-area-inset-bottom));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  max-width: calc(100vw - 2rem);
  min-height: 3rem;
  padding: 0.75rem 1.25rem;
  border: var(--blog-line) solid var(--accent-dark);
  border-radius: var(--r-pill);
  background: var(--accent);
  color: var(--panel);
  box-shadow: var(--shadow-panel);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
}

.float-cta svg {
  width: 1.1rem;
  height: 1.1rem;
  flex: 0 0 auto;
  fill: currentColor;
}

.float-cta:hover {
  background: var(--accent-dark);
}

.blog-modal-open {
  overflow: hidden;
}

.signup-modal {
  position: fixed;
  inset: 0;
  width: min(28rem, calc(100% - 2rem));
  max-width: calc(100% - 2rem);
  max-height: calc(100dvh - 2rem);
  margin: auto;
  padding: 0;
  overflow: auto;
  border: var(--blog-line) solid var(--border);
  border-radius: var(--r-lg);
  background: var(--panel);
  color: var(--text);
  box-shadow: var(--shadow-panel);
  opacity: 0;
  transform: translateY(0.5rem);
  transition: opacity var(--blog-transition), transform var(--blog-transition);
  font-family: var(--font-body);
}

.signup-modal::backdrop {
  background: var(--blog-overlay);
}

.signup-modal.is-open {
  opacity: 1;
  transform: translateY(0);
}

.signup-modal.is-closing {
  opacity: 0;
  transform: translateY(0.5rem);
}

.signup-modal__panel {
  position: relative;
  padding: 2.5rem 1.75rem 1.75rem;
  border-top: 4px solid var(--accent);
}

.signup-modal__panel h2 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.6rem;
  line-height: 1.5;
}

.signup-modal__panel > p:not(.blog-eyebrow) {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.85;
}

.signup-modal__close {
  position: absolute;
  inset-block-start: 0.5rem;
  inset-inline-end: 0.5rem;
  width: 2.75rem;
  height: 2.75rem;
  border: var(--blog-line) solid var(--border);
  border-radius: var(--r-sm);
  background: var(--panel);
  color: var(--text);
  font: inherit;
  font-size: 1.5rem;
  cursor: pointer;
}

.signup-modal__close:hover {
  background: var(--panel-2);
}

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

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

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

  .blog-post-grid {
    grid-template-columns: 1fr;
  }

  .blog-list-hero {
    padding-block: 2rem 1.5rem;
  }

  .blog-list-hero::before {
    inset-inline-start: 20%;
  }

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

  .article-hero::before {
    inset-inline-start: calc(var(--blog-gutter) + 1rem);
  }

  .article-hero .article-meta,
  .article-hero .article-summary,
  .article-hero .summary,
  .article-hero .lede,
  .article-hero > p {
    margin-inline-start: 0;
  }

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

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

  .promo-block {
    padding: 1.5rem;
  }

  .float-cta {
    min-height: 2.75rem;
    padding: 0.55rem 1rem;
    font-size: 0.85rem;
  }

  .article-page {
    padding-bottom: calc(4.5rem + env(safe-area-inset-bottom));
  }

  .article-page:has(.float-cta) #site-footer {
    padding-bottom: calc(4.5rem + env(safe-area-inset-bottom));
  }
}

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

  .blog-post-grid .article-card:hover,
  #related-posts .article-card:hover,
  .blog-post-grid .article-card:focus-within,
  #related-posts .article-card:focus-within,
  .post-nav-card:hover,
  .post-nav-card:focus-visible,
  .signup-modal,
  .signup-modal.is-closing {
    transform: none;
  }
}