:root {
  --blog-reading: 56rem;
  --blog-gutter: clamp(1.5rem, 4vw, 2rem);
  --blog-body-size: 1rem;
  --blog-body-leading: 1.85;
  --blog-title-size: clamp(1.8rem, 4vw, 2.6rem);
  --blog-list-title-size: clamp(2rem, 5vw, 3rem);
  --blog-h2-size: clamp(1.3rem, 3vw, 1.6rem);
  --blog-h3-size: 1.3rem;
  --blog-card-title-size: 1.15rem;
  --blog-small-size: 0.875rem;
  --blog-kicker-size: 0.8rem;
  --blog-stat-size: 1.8rem;
  --blog-title-spacing: -0.015em;
  --blog-kicker-spacing: 0.08em;
  --blog-radius: var(--r-md, 12px);
  --blog-small-radius: var(--r-sm, 8px);
  --blog-pill-radius: var(--r-pill, 999px);
  --blog-accent-wash: color-mix(in srgb, var(--accent) 9%, var(--panel));
  --blog-sky-wash: color-mix(in srgb, var(--sky) 9%, var(--panel));
  --blog-warning-wash: color-mix(in srgb, var(--warn) 12%, var(--panel));
  --blog-success-wash: color-mix(in srgb, var(--success) 10%, var(--panel));
  --blog-shadow: 0 12px 36px color-mix(in srgb, var(--accent) 10%, transparent);
  --blog-motion: 160ms ease;
}

.blog-column,
.article-hero,
.blog-masthead,
.reading-wrap,
.breadcrumbs,
.breadcrumb,
.promo-block,
#related-posts,
#post-nav {
  box-sizing: border-box;
}

.blog-column,
.article-hero,
.blog-masthead,
.reading-wrap,
.breadcrumbs,
.breadcrumb,
#related-posts,
#post-nav {
  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);
  margin-inline: auto;
  padding-inline: var(--blog-gutter);
  padding-block: 1.25rem 1.5rem;
}

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

.blog-skip {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 1000;
  padding: 0.75rem 1rem;
  color: var(--white);
  background: var(--accent-dark);
  border-radius: var(--blog-small-radius);
  transform: translateY(-200%);
}

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

.breadcrumbs,
.breadcrumb {
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
  font-size: var(--blog-small-size);
  line-height: 1.7;
  color: var(--muted);
  overflow-wrap: anywhere;
}

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

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

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

.blog-list-hero {
  position: relative;
  padding-top: 1.5rem;
  padding-bottom: 2rem;
}

.blog-list-hero::before,
.article-hero::before,
.blog-masthead::before {
  content: "";
  display: block;
  height: 4px;
  margin-bottom: 1.5rem;
  background: var(--grad-key, linear-gradient(90deg, var(--accent), var(--sky)));
}

.blog-kicker {
  margin: 0 0 0.75rem;
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: var(--blog-kicker-size);
  letter-spacing: var(--blog-kicker-spacing);
}

.blog-list-hero h1 {
  margin: 0 0 1rem;
  font-size: var(--blog-list-title-size);
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.3;
}

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

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

.blog-feed {
  padding-bottom: 2rem;
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.5rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--blog-radius);
}

.blog-filters button {
  min-height: 2.75rem;
  padding: 0.55rem 1rem;
  border: 1px solid transparent;
  border-radius: var(--blog-pill-radius);
  background: transparent;
  color: var(--muted);
  font-family: var(--font-body);
  font-size: var(--blog-small-size);
  line-height: 1.4;
  cursor: pointer;
  transition: background var(--blog-motion), color var(--blog-motion);
}

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

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

.blog-filters button:focus-visible,
.article-card a:focus-visible,
.post-link:focus-visible,
.float-cta:focus-visible,
.blog-skip:focus-visible {
  outline: 3px solid var(--sky);
  outline-offset: 4px;
}

.blog-status {
  margin: 1rem 0;
  color: var(--muted);
  font-size: var(--blog-small-size);
  line-height: 1.6;
  min-height: 1.6em;
}

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

.article-card {
  min-width: 0;
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-top: 3px solid var(--border);
  border-radius: var(--blog-radius);
  background: var(--panel);
  box-shadow: inset 0 1px 0 var(--hi, var(--white));
  color: var(--text);
  transition: border-color var(--blog-motion), box-shadow var(--blog-motion), transform var(--blog-motion);
}

.article-card:hover,
.article-card:focus-within {
  border-color: var(--accent);
  box-shadow: var(--blog-shadow);
  transform: translateY(-2px);
}

.article-card h2,
.article-card h3 {
  margin: 1rem 0 0.75rem;
  font-family: var(--font-display);
  font-size: var(--blog-card-title-size);
  line-height: 1.65;
}

.article-card h2::before,
.article-card h3::before {
  content: none;
}

.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-dark);
}

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

.article-tag {
  display: inline-block;
  max-width: 100%;
  padding: 0.2rem 0.65rem;
  background: var(--accent-dark);
  color: var(--white);
  border-radius: var(--blog-pill-radius);
  font-size: var(--blog-small-size);
  overflow-wrap: anywhere;
  white-space: normal;
}

.article-meta time {
  font-variant-numeric: tabular-nums;
}

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

.article-card .text-link {
  color: var(--accent-dark);
  font-size: var(--blog-small-size);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 0.25em;
}

.blog-empty {
  grid-column: 1 / -1;
  margin: 0;
  padding: 2rem 1.5rem;
  background: var(--panel-2);
  border-radius: var(--blog-radius);
  color: var(--muted);
  font-size: var(--blog-body-size);
  line-height: var(--blog-body-leading);
}

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

.blog-service-note {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding-block: 1.5rem 3rem;
}

.blog-service-note h2 {
  margin: 0 0 0.5rem;
  font-size: var(--blog-h2-size);
  line-height: 1.5;
  text-wrap: pretty;
}

.blog-service-note p {
  margin: 0;
  color: var(--muted);
  font-size: var(--blog-small-size);
  line-height: 1.8;
}

.article-hero,
.blog-masthead {
  position: relative;
  padding-block: 0.5rem 0;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.article-hero h1,
.blog-masthead h1 {
  margin: 1rem 0;
  color: var(--text);
  font-family: var(--font-display);
  font-size: var(--blog-title-size);
  font-weight: 700;
  line-height: 1.4;
}

.article-hero .article-meta,
.blog-masthead .article-meta {
  justify-content: flex-start;
}

.article-hero .article-meta time,
.blog-masthead .article-meta time,
.article-hero .read-time,
.article-hero .reading-time,
.blog-masthead .read-time,
.blog-masthead .reading-time {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: var(--blog-pill-radius);
  color: var(--muted);
  font-size: var(--blog-small-size);
}

.article-hero .article-summary,
.article-hero .article-lead,
.article-hero .lede,
.blog-masthead .article-summary,
.blog-masthead .article-lead,
.blog-masthead .lede {
  margin: 0;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: var(--blog-body-size);
  line-height: var(--blog-body-leading);
}

.prose,
.article-body,
.blog-content,
[data-article-body] {
  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-chapter;
}

:is(.prose, .article-body, .blog-content, [data-article-body]) p {
  margin: 0 0 1.2rem;
}

:is(.prose, .article-body, .blog-content, [data-article-body]) h2 {
  position: relative;
  margin: 2.25rem 0 1rem;
  font-family: var(--font-display);
  font-size: var(--blog-h2-size);
  font-weight: 700;
  line-height: 1.55;
  scroll-margin-top: var(--anchor-offset, 6rem);
}

:is(.prose, .article-body, .blog-content, [data-article-body]) h2::before {
  content: "";
  display: inline-block;
  width: 0.4rem;
  height: 1em;
  margin-right: 0.65rem;
  border-radius: var(--r-xs, 4px);
  background: var(--accent);
  vertical-align: -0.1em;
}

:is(.prose, .article-body, .blog-content, [data-article-body]) > h2:first-child,
:is(.prose, .article-body, .blog-content, [data-article-body]) > section:first-child > h2:first-child {
  margin-top: 0.5rem;
}

:is(.prose, .article-body, .blog-content, [data-article-body]) h3 {
  margin: 1.75rem 0 0.75rem;
  font-family: var(--font-display);
  font-size: var(--blog-h3-size);
  line-height: 1.6;
}

:is(.prose, .article-body, .blog-content, [data-article-body]) ul,
:is(.prose, .article-body, .blog-content, [data-article-body]) ol {
  margin: 0 0 1.4rem;
  padding-left: 1.5rem;
}

:is(.prose, .article-body, .blog-content, [data-article-body]) li {
  margin-bottom: 0.5rem;
}

:is(.prose, .article-body, .blog-content, [data-article-body]) a {
  color: var(--accent-dark);
  text-underline-offset: 0.2em;
}

:is(.prose, .article-body, .blog-content, [data-article-body]) img,
:is(.prose, .article-body, .blog-content, [data-article-body]) svg {
  max-width: 100%;
}

:is(.prose, .article-body, .blog-content, [data-article-body]) code {
  padding: 0.15rem 0.35rem;
  background: var(--panel-2);
  border-radius: var(--r-xs, 4px);
  font-family: var(--font-mono);
  font-size: var(--blog-small-size);
  overflow-wrap: anywhere;
}

:is(.prose, .article-body, .blog-content, [data-article-body]) pre {
  position: relative;
  max-width: 100%;
  margin: 1.5rem 0;
  padding: 2.75rem 1.25rem 1.25rem;
  overflow-x: auto;
  background: var(--text);
  color: var(--panel);
  border: 1px solid var(--muted);
  border-radius: var(--blog-radius);
  font-family: var(--font-mono);
  font-size: var(--blog-small-size);
  line-height: 1.8;
  white-space: pre;
  overflow-wrap: normal;
}

:is(.prose, .article-body, .blog-content, [data-article-body]) pre::before {
  content: "配置片段";
  position: absolute;
  top: 0.65rem;
  left: 1.25rem;
  color: var(--panel-2);
  font-family: var(--font-mono);
  font-size: var(--blog-kicker-size);
}

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

:is(.prose, .article-body, .blog-content, [data-article-body]) .table-scroll {
  width: 100%;
  max-width: 100%;
  margin: 1.5rem 0;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--blog-small-radius);
  overscroll-behavior-inline: contain;
}

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

:is(.prose, .article-body, .blog-content, [data-article-body]) .table-scroll table {
  min-width: 40rem;
  margin: 0;
}

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

:is(.prose, .article-body, .blog-content, [data-article-body]) thead th {
  color: var(--white);
  background: var(--accent-dark);
  font-weight: 600;
}

:is(.prose, .article-body, .blog-content, [data-article-body]) tbody th,
:is(.prose, .article-body, .blog-content, [data-article-body]) tbody td:first-child {
  color: var(--text);
  font-weight: 600;
}

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

:is(.prose, .article-body, .blog-content, [data-article-body]) tbody tr:hover {
  background: var(--blog-accent-wash);
}

.callout,
.verdict {
  position: relative;
  margin: 1.5rem 0;
  padding: 1.1rem 1.25rem 1.1rem 3.5rem;
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--blog-small-radius);
  background: var(--blog-accent-wash);
  color: var(--text);
}

.callout::before {
  content: "i";
  position: absolute;
  top: 1.15rem;
  left: 1rem;
  width: 1.5rem;
  height: 1.5rem;
  border: 1px solid var(--accent-dark);
  border-radius: var(--blog-pill-radius);
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: var(--blog-small-size);
  line-height: 1.4rem;
  text-align: center;
  font-weight: 700;
}

.callout.warning,
.callout.is-warning,
.callout-warning {
  border-left-color: var(--warn);
  background: var(--blog-warning-wash);
}

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

.callout.success,
.callout.is-success,
.callout-success {
  border-left-color: var(--success);
  background: var(--blog-success-wash);
}

.callout.success::before,
.callout.is-success::before,
.callout-success::before {
  border-color: var(--accent-dark);
  color: var(--accent-dark);
}

.verdict {
  padding-left: 1.25rem;
  border-left-color: var(--accent);
  background: var(--panel);
}

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

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

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.stat-card {
  min-width: 0;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: var(--blog-radius);
  background: var(--blog-accent-wash);
}

.stat-card:nth-child(even) {
  border-top-color: var(--sky);
  background: var(--blog-sky-wash);
}

.stat-num {
  display: block;
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: var(--blog-stat-size);
  font-weight: 700;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

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

.stat-label {
  display: block;
  margin-top: 0.5rem;
  color: var(--muted);
  font-size: var(--blog-small-size);
  line-height: 1.8;
}

:is(.prose, .article-body, .blog-content, [data-article-body]) .check-list,
.check-list {
  margin: 1.5rem 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  margin: 0 0 0.6rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--blog-small-radius);
  background: var(--panel);
  line-height: var(--blog-body-leading);
  list-style: none;
}

.check-list li::before,
.check-list li::marker {
  content: none;
}

.promo-block {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  width: calc(100% - var(--blog-gutter) * 2);
  max-width: var(--blog-reading);
  margin: 1.5rem auto;
  padding: 1.75rem;
  background: var(--grad-cta, linear-gradient(120deg, var(--accent-dark), var(--sky)));
  color: var(--white);
  border: 1px solid var(--accent-dark);
  border-radius: var(--blog-radius);
  box-shadow: var(--blog-shadow);
}

.reading-wrap .promo-block,
.prose .promo-block {
  width: 100%;
}

.promo-block h3 {
  margin: 0 0 0.5rem;
  color: var(--white);
  font-family: var(--font-display);
  font-size: var(--blog-h3-size);
  line-height: 1.6;
}

.promo-block p {
  margin: 0;
  max-width: 34rem;
  color: var(--white);
  font-size: var(--blog-body-size);
  line-height: var(--blog-body-leading);
}

.promo-block .btn-primary,
.prose .promo-block .btn-primary {
  color: var(--accent-dark);
  background: var(--white);
  border: 1px solid var(--white);
  box-shadow: none;
}

.promo-block .btn-ghost,
.prose .promo-block .btn-ghost {
  color: var(--white);
  background: transparent;
  border: 1px solid var(--white);
}

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

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

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

.related-heading {
  margin: 0 0 1.25rem;
  color: var(--text);
  font-family: var(--font-display);
  font-size: var(--blog-h2-size);
  line-height: 1.55;
}

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

.related-card {
  padding: 1.25rem;
}

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

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

.post-link {
  display: block;
  min-width: 0;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-top: 3px solid var(--border);
  border-radius: var(--blog-radius);
  background: var(--panel);
  color: var(--text);
  text-decoration: none;
  transition: border-color var(--blog-motion), transform var(--blog-motion);
}

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

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

.post-direction,
.post-category {
  display: block;
  color: var(--accent-dark);
  font-size: var(--blog-small-size);
  line-height: 1.8;
}

.post-title {
  display: block;
  margin: 0.5rem 0;
  font-family: var(--font-display);
  font-size: var(--blog-body-size);
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.post-category {
  color: var(--muted);
}

.float-cta {
  position: fixed;
  right: max(1.25rem, env(safe-area-inset-right));
  bottom: max(1.25rem, env(safe-area-inset-bottom));
  z-index: 40;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  max-width: calc(100vw - 2.5rem);
  padding: 0.85rem 1.25rem;
  border: 1px solid var(--accent-dark);
  border-radius: var(--blog-pill-radius);
  background: var(--grad-cta, linear-gradient(120deg, var(--accent-dark), var(--sky)));
  color: var(--white);
  box-shadow: var(--blog-shadow);
  font-family: var(--font-body);
  font-size: var(--blog-body-size);
  font-weight: 600;
  line-height: 1.5;
  text-decoration: none;
}

.float-cta svg {
  width: 1.2rem;
  height: 1.2rem;
  flex: none;
  fill: currentColor;
}

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

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

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

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

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

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

  .article-card {
    padding: 1.25rem;
  }

  .blog-filters {
    gap: 0.35rem;
  }

  .blog-filters button {
    padding-inline: 0.85rem;
  }

  .article-hero h1,
  .blog-masthead h1 {
    line-height: 1.45;
  }

  .promo-block {
    padding: 1.5rem;
    align-items: flex-start;
  }

  .callout {
    padding-right: 1rem;
    padding-left: 3.25rem;
  }

  .float-cta {
    position: sticky;
    left: auto;
    right: auto;
    bottom: max(0.75rem, env(safe-area-inset-bottom));
    width: fit-content;
    max-width: calc(100% - var(--blog-gutter) * 2);
    margin: 1rem auto;
    display: flex;
  }
}

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

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