:root {
  --blog-reading: 840px;
  --blog-gap: 2rem;
  --blog-title-spacing: -0.015em;
  --blog-line-height: 1.85;
  --blog-rule: 0.25rem;
  --blog-focus-width: 0.1875rem;
  --blog-hover-shift: -0.125rem;
  --blog-tint: color-mix(in srgb, var(--accent) 7%, var(--panel));
  --blog-success-tint: color-mix(in srgb, var(--success) 9%, var(--panel));
  --blog-warning-tint: color-mix(in srgb, var(--warn) 12%, var(--panel));
}

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

.blog-index h1,
.blog-index h2,
.blog-index h3,
.article-hero h1,
.reading-wrap h1,
.reading-wrap h2,
.reading-wrap h3,
#related-posts h2,
#related-posts h3 {
  display: block;
  text-wrap: pretty;
  letter-spacing: var(--blog-title-spacing);
  font-family: var(--font-display);
}

.blog-skip {
  position: absolute;
  inset-block-start: 0.5rem;
  inset-inline-start: var(--gutter);
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--panel);
  color: var(--accent-dark);
  border-radius: var(--r-pill);
  transform: translateY(-200%);
}

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

.blog-index a:focus-visible,
.blog-index button:focus-visible,
.reading-wrap a:focus-visible,
.float-cta:focus-visible {
  outline: var(--blog-focus-width) solid var(--accent);
  outline-offset: 0.25rem;
}

.breadcrumbs {
  margin-block-start: 1.5rem;
  margin-block-end: 1.5rem;
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.8;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

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

.breadcrumbs li + li::before {
  content: "›";
  margin-inline-end: 0.5rem;
  color: var(--muted);
}

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

.blog-list-hero {
  padding-block: 2.5rem 2rem;
  text-align: center;
}

.blog-eyebrow {
  margin: 0 0 1rem;
  color: var(--accent);
  font-weight: var(--weight-bold);
}

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

.kw {
  color: var(--accent);
}

.blog-hero-summary {
  max-width: 42rem;
  margin: 1.25rem auto;
  color: var(--muted);
  font-size: 1.0625rem;
  line-height: var(--blog-line-height);
}

.blog-fact-row,
.blog-promo-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.blog-catalog {
  padding-block: 1rem 2rem;
}

.blog-filter-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.625rem;
}

.blog-filter-group button {
  min-height: 2.75rem;
  padding: 0.625rem 1.125rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--panel);
  color: var(--text);
  font: inherit;
  font-weight: var(--weight-medium);
  cursor: pointer;
  transition: border-color var(--time-ui), background var(--time-ui);
}

.blog-filter-group button:hover {
  border-color: var(--accent);
}

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

.blog-list-status {
  margin-block: 1.5rem 1rem;
  font-size: 0.875rem;
  color: var(--muted);
}

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

.article-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 1.5rem;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  box-shadow: var(--shadow-soft);
  transition: transform var(--time-ui) var(--ease-ui), border-color var(--time-ui);
}

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

.article-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: center;
  gap: 0.625rem;
  color: var(--muted);
  font-size: 0.8125rem;
  line-height: 1.6;
}

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

.article-meta time {
  font-family: var(--font-mono);
}

.article-card h2,
.article-card h3 {
  margin: 1rem 0 0.75rem;
  font-size: 1.25rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.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);
}

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

.article-link {
  align-self: flex-start;
  margin-block-start: auto;
  color: var(--accent);
  font-weight: var(--weight-bold);
  text-decoration: none;
  text-underline-offset: 0.25em;
}

.article-link:hover {
  text-decoration: underline;
}

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

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

.article-hero {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 1fr);
  align-items: start;
  gap: var(--blog-gap);
  padding-block: 1.5rem 2rem;
  background: none;
  border: none;
}

.article-hero-content,
.article-hero-main {
  grid-column: 1;
  grid-row: 1;
  min-width: 0;
  padding-block-start: 1rem;
  border-block-start: var(--blog-rule) solid var(--accent);
}

.article-hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.875rem, 3.4vw, 2.6rem);
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.article-hero-summary,
.article-hero .article-summary,
.article-hero .article-deck {
  margin: 0;
  font-size: 1rem;
  line-height: var(--blog-line-height);
  color: var(--muted);
}

.article-hero-meta,
.article-hero > .article-meta {
  grid-column: 2;
  grid-row: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  gap: 0.875rem;
  min-width: 0;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--r-small);
  background: var(--panel);
  color: var(--muted);
  font-size: 0.8125rem;
  line-height: 1.7;
}

.article-hero-meta > *,
.article-hero > .article-meta > * {
  max-width: 100%;
  margin: 0;
  overflow-wrap: anywhere;
}

.article-hero-meta time,
.article-readtime {
  padding-block: 0.375rem;
  border-block-start: 1px solid var(--border);
}

.reading-wrap.prose,
.reading-wrap [data-article-body],
.reading-wrap .prose {
  font-size: 1rem;
  line-height: var(--blog-line-height);
  overflow-wrap: anywhere;
}

.reading-wrap.prose,
.reading-wrap [data-article-body],
.reading-wrap .prose {
  counter-reset: blog-section;
}

.reading-wrap p,
.reading-wrap ul,
.reading-wrap ol {
  margin-block: 0 1.25rem;
}

.reading-wrap li + li {
  margin-block-start: 0.5rem;
}

.reading-wrap h2 {
  margin-block: 2.25rem 1rem;
  font-size: 1.6rem;
  line-height: 1.55;
  color: var(--text);
}

.reading-wrap h2::before {
  content: "";
  display: inline-block;
  width: 1.25rem;
  height: var(--blog-rule);
  margin-inline-end: 0.625rem;
  border-radius: var(--r-pill);
  vertical-align: middle;
  background: var(--accent);
}

.reading-wrap > h2:first-child,
.reading-wrap .prose > h2:first-child,
[data-article-body] > h2:first-child {
  margin-block-start: 0.5rem;
}

.reading-wrap h3 {
  margin-block: 1.5rem 0.75rem;
  font-size: 1.3rem;
  line-height: 1.6;
}

.reading-wrap a:not(.btn):not(.post-nav-card) {
  color: var(--accent);
  text-underline-offset: 0.2em;
}

.reading-wrap img,
.reading-wrap svg {
  max-width: 100%;
}

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

.reading-wrap table {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.reading-wrap caption {
  padding: 0.875rem;
  color: var(--muted);
  text-align: start;
  font-weight: var(--weight-medium);
}

.reading-wrap th,
.reading-wrap td {
  padding: 0.875rem 1rem;
  border-block-end: 1px solid var(--border);
  text-align: start;
  vertical-align: top;
}

.reading-wrap thead th {
  background: var(--accent-dark);
  color: var(--white);
  font-weight: var(--weight-bold);
}

.reading-wrap tbody tr:nth-child(even) {
  background: var(--panel-2);
}

.reading-wrap tbody tr:hover {
  background: var(--blog-tint);
}

.reading-wrap pre {
  position: relative;
  max-width: 100%;
  margin-block: 1.5rem;
  padding: 2.75rem 1.25rem 1.25rem;
  overflow-x: auto;
  border: 1px solid var(--accent);
  border-radius: var(--r-small);
  background: var(--accent-dark);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.85;
  white-space: pre;
}

.reading-wrap pre::before {
  content: "配置示例";
  position: absolute;
  inset-block-start: 0.625rem;
  inset-inline-start: 1.25rem;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.75rem;
}

.reading-wrap code {
  padding: 0.125rem 0.375rem;
  border-radius: var(--r-small);
  background: var(--panel-2);
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 0.875em;
  overflow-wrap: anywhere;
}

.reading-wrap pre code {
  padding: 0;
  background: var(--transparent);
  color: inherit;
  font-size: inherit;
  overflow-wrap: normal;
}

.reading-wrap blockquote,
.callout {
  position: relative;
  margin: 1.5rem 0;
  padding: 1.25rem 1.25rem 1.25rem 3.75rem;
  border: 1px solid var(--border);
  border-inline-start: var(--blog-rule) solid var(--accent);
  border-radius: var(--r-small);
  background: var(--blog-tint);
  color: var(--text);
  font-size: 1rem;
  line-height: var(--blog-line-height);
}

.callout::before,
.reading-wrap blockquote::before {
  content: "i";
  position: absolute;
  inset-block-start: 1.25rem;
  inset-inline-start: 1rem;
  display: inline-block;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: var(--r-circle);
  background: var(--accent);
  color: var(--white);
  text-align: center;
  font-family: var(--font-mono);
  font-weight: var(--weight-bold);
  line-height: 1.5rem;
}

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

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

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

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

.callout p:last-child,
.reading-wrap blockquote p:last-child {
  margin-block-end: 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: 1.25rem;
  border: 1px solid var(--border);
  border-block-start: var(--blog-rule) solid var(--accent);
  border-radius: var(--r-small);
  background: var(--blog-tint);
}

.stat-card:nth-child(even) {
  border-block-start-color: var(--sky);
  background: var(--panel-2);
}

.stat-num {
  display: block;
  color: var(--accent-dark);
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: var(--weight-bold);
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.stat-label {
  display: block;
  margin-block-start: 0.5rem;
  color: var(--muted);
  font-size: 0.9375rem;
}

.reading-wrap .check-list,
.check-list {
  display: grid;
  gap: 0.75rem;
  padding: 0;
  margin-block: 1.5rem;
  list-style: none;
}

.check-list li {
  margin: 0;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--r-small);
  background: var(--panel);
}

.verdict {
  margin-block: 1.5rem;
  padding: 1.25rem 1.5rem;
  border-inline-start: var(--blog-rule) solid var(--accent);
  border-radius: var(--r-small);
  background: var(--panel-2);
  color: var(--text);
}

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

.verdict p:last-child {
  margin-block-end: 0;
}

.blog-list-promo {
  padding-block: 1rem 3rem;
}

.promo-block {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-block: 2rem;
  padding: 2rem;
  border: 1px solid var(--accent);
  border-radius: var(--r-card);
  background: var(--gradient-brand);
  color: var(--white);
  box-shadow: var(--shadow-soft);
}

.promo-block h2,
.promo-block h3 {
  margin: 0 0 0.5rem;
  color: var(--white);
  font-size: 1.3rem;
  line-height: 1.5;
}

.promo-block h2::before {
  content: none;
}

.promo-block p {
  margin: 0;
  color: var(--white);
  font-size: 1rem;
  line-height: var(--blog-line-height);
}

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

.promo-block .btn-secondary {
  background: var(--transparent);
  border-color: var(--white);
  color: var(--white);
  border-radius: var(--r-pill);
}

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

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

#related-posts > h2 {
  margin-block: 0 1.25rem;
  font-size: 1.5rem;
}

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

#related-posts .article-card {
  padding: 1.25rem;
}

#related-posts .article-card h3 {
  font-size: 1.125rem;
}

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

.post-nav-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-width: 0;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-block-start: var(--blog-rule) solid var(--border);
  border-radius: var(--r-small);
  background: var(--panel);
  color: var(--text);
  text-decoration: none;
  transition: border-color var(--time-ui), transform var(--time-ui) var(--ease-ui);
}

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

.post-nav-card:hover,
.post-nav-card:focus-visible {
  border-block-start-color: var(--accent);
  transform: translateY(var(--blog-hover-shift));
}

.post-nav-label {
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: var(--weight-bold);
}

.post-nav-card strong {
  color: var(--text);
  font-size: 1rem;
  line-height: 1.75;
  overflow-wrap: anywhere;
}

.post-nav-card time {
  margin-block-start: auto;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

.float-cta {
  position: fixed;
  inset-inline-end: 1.5rem;
  inset-block-end: 1.5rem;
  z-index: 40;
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  max-width: calc(100vw - 3rem);
  padding: 0.875rem 1.5rem;
  border: 1px solid var(--accent-dark);
  border-radius: var(--r-pill);
  background: var(--gradient-brand);
  color: var(--white);
  box-shadow: var(--shadow-float);
  font-family: var(--font-body);
  font-weight: var(--weight-bold);
  text-decoration: none;
}

.float-cta svg {
  flex: 0 0 auto;
  width: 1.25rem;
  height: 1.25rem;
  fill: none;
  stroke: currentColor;
}

@media (max-width: 860px) {
  .reading-wrap table {
    display: block;
    width: fit-content;
    max-width: 100%;
    overflow-x: auto;
  }

  .reading-wrap .table-scroll table {
    display: table;
    width: 100%;
    min-width: 36rem;
    max-width: none;
  }

  .reading-wrap table th,
  .reading-wrap table td {
    min-width: 8rem;
  }

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

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

  .blog-list-hero {
    padding-block: 1.5rem;
    text-align: start;
  }

  .blog-list-hero h1 {
    font-size: clamp(1.875rem, 7vw, 2.5rem);
  }

  .blog-fact-row,
  .blog-filter-group {
    justify-content: flex-start;
  }

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

  .article-hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.25rem;
    padding-block: 1rem 1.5rem;
  }

  .article-hero-meta,
  .article-hero > .article-meta {
    grid-column: 1;
    grid-row: 1;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.625rem;
  }

  .article-hero-content,
  .article-hero-main {
    grid-column: 1;
    grid-row: 2;
  }

  .article-hero h1 {
    font-size: clamp(1.75rem, 7vw, 2.25rem);
  }

  .article-hero-meta time,
  .article-readtime {
    padding-block: 0;
    border: none;
  }

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

  .promo-block .blog-promo-actions {
    justify-content: flex-start;
  }

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

  .float-cta {
    inset-inline-end: 1rem;
    inset-block-end: max(0.75rem, env(safe-area-inset-bottom));
    max-width: calc(100vw - 2rem);
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
  }

  body:has(.float-cta) {
    padding-block-end: 5rem;
  }
}

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

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