/* VPNZR 阅读页：暖纸、刊头线与线路检索台的墨绿色标记。 */
.blog-page {
  overflow-x: clip;
}

.blog-shell,
.breadcrumbs,
.article-hero,
.reading-wrap,
.article-end,
#related-posts,
#post-nav {
  box-sizing: border-box;
  width: min(100%, calc(56rem + 2 * var(--gutter)));
  max-width: calc(56rem + 2 * var(--gutter));
  padding-inline: var(--gutter);
  margin-inline: auto;
}

.blog-shell {
  padding-bottom: 5rem;
}

.blog-shell > .breadcrumbs,
.blog-shell > .blog-hero,
.blog-shell > .blog-directory,
.blog-shell > .promo-block {
  padding-inline: 0;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1.5rem;
  margin-bottom: 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.breadcrumbs a {
  color: var(--accent-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.breadcrumbs a:hover {
  color: var(--accent);
}

.blog-hero {
  padding-block: 1.4rem 2.4rem;
  border-top: 4px solid var(--accent);
  border-bottom: 1px solid var(--border);
}

.blog-eyebrow {
  margin: 0 0 1rem;
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.blog-hero h1 {
  max-width: 18ch;
  margin: 0;
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  text-wrap: pretty;
}

.blog-hero > p:last-child {
  max-width: 42rem;
  margin: 1rem 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.blog-directory {
  padding-top: 2.5rem;
}

.directory-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
}

.directory-heading h2 {
  margin: 0;
  color: var(--text);
  font-size: 1.45rem;
  text-wrap: pretty;
}

.directory-heading p {
  margin: 0;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.tag-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  padding-block: 1.35rem 1.7rem;
}

.tag-filter {
  padding: 0.55rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--r-s);
  background: var(--panel);
  color: var(--muted);
  font: inherit;
  font-size: 0.88rem;
  cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease;
}

.tag-filter:hover,
.tag-filter:focus-visible {
  border-color: var(--accent);
  color: var(--accent-dark);
}

.tag-filter.is-active {
  border-color: var(--accent-dark);
  background: var(--accent-dark);
  color: var(--on-accent);
}

.tag-filter:focus-visible,
.article-card a:focus-visible,
.related-card:focus-visible,
.post-nav-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

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

.article-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 1.45rem;
  border: 1px solid var(--border);
  border-top: 3px solid var(--border);
  border-radius: var(--r-m);
  background: var(--panel);
  box-shadow: 0 10px 26px var(--accent-a06), inset 0 1px var(--hi);
  transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.article-card:hover {
  transform: translateY(-3px);
  border-top-color: var(--accent);
  box-shadow: 0 15px 30px var(--accent-a10);
}

.article-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.article-card-meta .badge {
  border-color: var(--accent-a18);
  background: var(--accent-a10);
  color: var(--accent-dark);
}

.article-card h3 {
  margin: 1.05rem 0 0.7rem;
  font-size: 1.17rem;
  line-height: 1.55;
  letter-spacing: -0.01em;
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

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

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

.article-card p {
  flex: 1;
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.8;
}

.article-read-link {
  align-self: flex-start;
  color: var(--accent-dark);
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
}

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

.blog-empty {
  grid-column: 1 / -1;
  margin: 0;
  padding: 2rem;
  border: 1px dashed var(--border);
  border-radius: var(--r-m);
  color: var(--muted);
}

/* 文章面包屑、刊头、正文与文末组件共享同一条阅读列。 */
.article-hero {
  padding-block: 0 1.4rem;
  border-top: 4px solid var(--accent);
  border-bottom: 1px solid var(--border);
  background: transparent;
}

.article-hero .article-meta,
.article-hero .post-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: 0.55rem;
  margin: 1.2rem 0 1.3rem;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.article-meta > *,
.post-meta > * {
  display: inline-block;
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--panel);
}

.article-meta .badge,
.post-meta .badge {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--on-accent);
}

.article-hero h1 {
  margin: 0;
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

.article-hero > p:last-child,
.article-hero .article-summary {
  max-width: 52rem;
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
}

.reading-wrap {
  /* 覆盖基础阅读宽度：与刊头保持相同外宽和内衬。 */
  width: min(100%, calc(56rem + 2 * var(--gutter)));
  max-width: calc(56rem + 2 * var(--gutter));
  padding-inline: var(--gutter);
  margin-inline: auto;
  padding-block: 0 1.5rem;
}

.article-body,
.post-body,
.prose {
  min-width: 0;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.85;
  overflow-wrap: break-word;
}

.article-body h2,
.post-body h2,
.prose h2 {
  margin: 2.4rem 0 0.9rem;
  padding-left: 0.85rem;
  border-left: 3px solid var(--accent);
  color: var(--text);
  font-size: clamp(1.3rem, 2vw, 1.6rem);
  line-height: 1.4;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

.article-body h3,
.post-body h3,
.prose h3 {
  margin: 1.8rem 0 0.7rem;
  color: var(--text);
  font-size: clamp(1.12rem, 1.8vw, 1.3rem);
  line-height: 1.5;
  text-wrap: pretty;
}

.article-body > :first-child,
.post-body > :first-child,
.prose > :first-child {
  margin-top: 1.45rem;
}

.article-body p,
.post-body p,
.prose p {
  margin: 0.85rem 0 1.2rem;
}

.article-body a,
.post-body a,
.prose a {
  color: var(--accent-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.article-body a:hover,
.post-body a:hover,
.prose a:hover {
  color: var(--accent);
}

.article-body ul,
.article-body ol,
.post-body ul,
.post-body ol,
.prose ul,
.prose ol {
  padding-left: 1.5rem;
  margin-block: 1rem 1.35rem;
}

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

.article-body .table-scroll,
.post-body .table-scroll,
.prose .table-scroll {
  max-width: 100%;
  margin-block: 1.6rem;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--r-s);
}

.article-body table,
.post-body table,
.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  line-height: 1.6;
}

.article-body th,
.article-body td,
.post-body th,
.post-body td,
.prose th,
.prose td {
  min-width: 7.5rem;
  padding: 0.8rem 0.95rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.article-body thead,
.post-body thead,
.prose thead {
  background: var(--accent-dark);
  color: var(--on-accent);
}

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

.article-body tbody tr:hover,
.post-body tbody tr:hover,
.prose tbody tr:hover {
  background: var(--accent-a10);
}

.article-body pre,
.post-body pre,
.prose pre {
  position: relative;
  max-width: 100%;
  margin-block: 1.6rem;
  padding: 2.4rem 1.25rem 1.25rem;
  overflow-x: auto;
  border-radius: var(--r-s);
  background: var(--text);
  color: var(--panel);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.7;
}

.article-body pre::before,
.post-body pre::before,
.prose pre::before {
  position: absolute;
  top: 0.65rem;
  left: 1.25rem;
  color: var(--panel-2);
  content: "VPNZR / NOTE";
  font-family: var(--font-mono);
  font-size: 0.69rem;
  letter-spacing: 0.06em;
}

.article-body pre code,
.post-body pre code,
.prose pre code {
  padding: 0;
  background: transparent;
  color: inherit;
}

.article-body :not(pre) > code,
.post-body :not(pre) > code,
.prose :not(pre) > code {
  padding: 0.12em 0.3em;
  border-radius: var(--r-xs);
  background: var(--accent-a10);
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 0.88em;
}

.article-body .callout,
.post-body .callout,
.prose .callout {
  position: relative;
  margin: 1.6rem 0;
  padding: 1.15rem 1.3rem 1.15rem 3.2rem;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--r-s) var(--r-s) 0;
  background: var(--accent-a10);
  color: var(--text);
  font-style: normal;
}

.callout::before {
  position: absolute;
  top: 1.12rem;
  left: 1.1rem;
  width: 1.35rem;
  height: 1.35rem;
  border: 1px solid currentColor;
  border-radius: var(--r-xs);
  color: var(--accent-dark);
  content: "i";
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1.35rem;
  text-align: center;
}

.callout.warning {
  border-left-color: var(--warn);
  background: color-mix(in srgb, var(--warn) 11%, var(--panel));
}

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

.callout.success {
  border-left-color: var(--success);
  background: color-mix(in srgb, var(--success) 11%, var(--panel));
}

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

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr));
  gap: 0.8rem;
  margin-block: 1.6rem;
}

.stat-card {
  min-width: 0;
  padding: 1.2rem;
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: var(--r-s);
  background: var(--panel);
}

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

.stat-num {
  display: block;
  color: var(--accent-dark);
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.5vw, 1.7rem);
  font-weight: 800;
  line-height: 1.4;
}

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

.stat-label {
  display: block;
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.6;
}

.article-body .check-list,
.post-body .check-list,
.prose .check-list {
  display: grid;
  gap: 0.55rem;
  padding: 0;
  margin-block: 1.5rem;
  list-style: none;
}

.check-list li {
  margin: 0;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--r-s);
  background: var(--panel);
  list-style: none;
}

.verdict {
  margin-block: 1.6rem;
  padding: 1rem 1.2rem;
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--r-s) var(--r-s) 0;
  background: var(--accent-a10);
  color: var(--text);
}

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

.promo-block {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
  margin-block: 2rem;
  padding: 1.6rem 1.8rem;
  border: 1px solid var(--accent-dark);
  border-radius: var(--r-m);
  background: linear-gradient(130deg, var(--accent-dark), var(--accent));
  color: var(--on-accent);
  box-shadow: 0 12px 28px var(--accent-a18);
}

.promo-block strong {
  color: var(--on-accent);
  font-family: var(--font-display);
  font-size: 1.2rem;
}

.promo-block p {
  margin: 0.45rem 0 0;
  color: var(--on-accent);
  line-height: 1.7;
}

.promo-block .btn-main {
  flex-shrink: 0;
  border: 1px solid var(--panel);
  background: var(--panel);
  color: var(--accent-dark);
  box-shadow: inset 0 1px var(--hi);
}

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

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

.article-end {
  padding-block: 0 2rem;
}

#related-posts {
  padding-top: 1.25rem;
  padding-bottom: 0.75rem;
}

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

#related-posts h2 {
  margin: 0 0 1rem;
  color: var(--text);
  font-size: 1.45rem;
  text-wrap: pretty;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.related-card,
.post-nav-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 0.7rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-top: 3px solid var(--border);
  border-radius: var(--r-s);
  background: var(--panel);
  color: var(--text);
  text-decoration: none;
  transition: border-color 180ms ease, transform 180ms ease;
}

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

.related-meta,
.post-nav-card > span {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  line-height: 1.6;
}

.related-card strong,
.post-nav-card strong {
  font-size: 0.95rem;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.related-hint {
  margin-top: auto;
  color: var(--accent-dark);
  font-size: 0.81rem;
  font-weight: 700;
}

#post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  padding-top: 0.75rem;
  padding-bottom: 1.25rem;
}

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

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

@media (max-width: 640px) {
  .blog-hero h1,
  .article-hero h1 {
    text-wrap: pretty;
  }

  .no-break {
    white-space: normal;
  }

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

  .article-card,
  .promo-block {
    padding: 1.2rem;
  }

  .tag-filters {
    gap: 0.45rem;
  }

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

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

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

  .article-card:hover,
  .related-card:hover,
  .post-nav-card:hover {
    transform: none;
  }
}