:root {
  --blog-reading-width: 56rem;
  --blog-list-width: 72rem;
  --blog-line-heavy: 0.25rem;
  --blog-line-thin: 0.0625rem;
  --blog-card-lift: -0.25rem;
  --blog-transition: 180ms ease;
  --blog-section-gap: clamp(3.5rem, 7vw, 6rem);
  --blog-copy-gap: 1.35rem;
  --blog-card-padding: clamp(1.25rem, 3vw, 2rem);
  --blog-hero-title: clamp(2.15rem, 6vw, 3rem);
  --article-hero-title: clamp(2rem, 5vw, 2.6rem);
  --article-h2-size: clamp(1.35rem, 3vw, 1.6rem);
  --article-h3-size: clamp(1.15rem, 2vw, 1.3rem);
}

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

.blog-index-column {
  max-width: var(--blog-list-width);
  margin-inline: auto;
}

.blog-index-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(4.5rem, 10vw, 8rem);
  border-bottom: var(--blog-line-thin) solid var(--color-border);
  isolation: isolate;
}

.blog-index-hero::before {
  position: absolute;
  inset: 12% auto auto 7%;
  z-index: -1;
  width: min(34rem, 70vw);
  aspect-ratio: 1;
  border: var(--blog-line-thin) solid color-mix(in srgb, var(--color-accent) 35%, transparent);
  border-radius: var(--radius-pill);
  content: "";
  opacity: 0.55;
}

.blog-index-hero::after {
  position: absolute;
  inset: auto 10% 8% auto;
  z-index: -1;
  width: min(18rem, 46vw);
  aspect-ratio: 1;
  border: var(--blog-line-thin) dashed color-mix(in srgb, var(--color-border) 75%, transparent);
  border-radius: var(--radius-pill);
  content: "";
  opacity: 0.6;
}

.blog-index-hero .eyebrow {
  margin-bottom: 1.25rem;
}

.blog-index-hero h1 {
  max-width: 15ch;
  margin: 0;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--blog-hero-title);
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.18;
  text-wrap: pretty;
}

.blog-index-hero h1 .no-break {
  color: var(--color-accent);
}

.blog-index-hero p {
  max-width: 42rem;
  margin: 1.5rem 0 0;
  color: var(--color-muted);
  font-size: 1.05rem;
  line-height: 1.85;
}

.blog-catalog {
  padding-block: var(--blog-section-gap);
}

.blog-catalog-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2rem;
}

.blog-catalog-head h2 {
  margin: 0.35rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.25;
  text-wrap: pretty;
}

.blog-catalog-head > p,
.section-kicker {
  color: var(--color-muted);
}

.section-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.blog-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 2.25rem;
}

.blog-filter-button {
  min-height: 2.65rem;
  padding: 0.65rem 1rem;
  border: var(--blog-line-thin) solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-muted);
  font: inherit;
  cursor: pointer;
  transition:
    border-color var(--blog-transition),
    background-color var(--blog-transition),
    color var(--blog-transition),
    transform var(--blog-transition);
}

.blog-filter-button:hover {
  border-color: var(--color-accent);
  color: var(--color-text);
  transform: translateY(-0.1rem);
}

.blog-filter-button:focus-visible {
  outline: 0.15rem solid var(--color-accent);
  outline-offset: 0.18rem;
}

.blog-filter-button.is-active {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-bg);
}

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

.article-card {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 20rem;
  flex-direction: column;
  padding: var(--blog-card-padding);
  overflow: hidden;
  border: var(--blog-line-thin) solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  transition:
    border-color var(--blog-transition),
    transform var(--blog-transition),
    background-color var(--blog-transition);
}

.article-card::before {
  position: absolute;
  inset: 0 auto auto 0;
  width: 34%;
  height: 0.18rem;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  content: "";
  opacity: 0.6;
  transition: width var(--blog-transition), opacity var(--blog-transition);
}

.article-card:hover {
  border-color: var(--color-accent);
  background: var(--color-panel-raised);
  transform: translateY(var(--blog-card-lift));
}

.article-card:hover::before {
  width: 100%;
  opacity: 1;
}

.article-meta,
.related-meta {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0.75rem;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.76rem;
}

.article-tag,
.related-tag {
  padding: 0.28rem 0.58rem;
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-accent) 18%, var(--color-panel));
  color: var(--color-accent);
}

.article-title {
  margin: 1.35rem 0 0.9rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.7vw, 1.75rem);
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.38;
  text-wrap: pretty;
}

.article-title a,
.related-title a {
  color: var(--color-text);
  text-decoration: none;
}

.article-summary,
.related-summary {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.8;
}

.article-read-link {
  align-self: flex-start;
  margin-top: auto;
  padding-top: 1.4rem;
  color: var(--color-accent);
  font-weight: 700;
  text-decoration: none;
}

.article-read-link::after {
  content: " →";
}

.blog-empty {
  padding: 2rem;
  border: var(--blog-line-thin) dashed var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-muted);
  text-align: center;
}

.blog-index-promo {
  padding-block: 0 var(--blog-section-gap);
}

.breadcrumbs,
.article-hero,
.prose,
.promo-block,
#related-posts,
#post-nav {
  width: min(calc(100% - (var(--gutter) * 2)), var(--blog-reading-width));
  margin-inline: auto;
}

.breadcrumbs {
  margin-top: 1.5rem;
  padding-top: 0.35rem;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumbs li:not(:last-child)::after {
  margin-left: 0.45rem;
  color: var(--color-border);
  content: "/";
}

.breadcrumbs a {
  color: var(--color-muted);
  text-decoration: none;
}

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

.article-hero {
  position: relative;
  margin-top: 2rem;
  padding-block: 1.5rem 2rem;
  border-top: var(--blog-line-heavy) solid var(--color-accent);
  border-bottom: var(--blog-line-thin) solid var(--color-border);
}

.article-hero::before {
  position: absolute;
  inset: calc(var(--blog-line-heavy) * -1) 0 auto 52%;
  height: var(--blog-line-heavy);
  background: var(--color-accent-dark);
  content: "";
}

.article-hero .article-meta {
  margin-bottom: 1.1rem;
}

.article-hero .article-meta > * {
  padding: 0.35rem 0.65rem;
  border: var(--blog-line-thin) solid var(--color-border);
  border-radius: var(--radius-pill);
}

.article-hero .article-meta .article-tag {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-bg);
}

.article-hero h1 {
  max-width: 22ch;
  margin: 0;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--article-hero-title);
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.25;
  text-wrap: pretty;
}

.article-deck,
.article-hero > p {
  max-width: 48rem;
  margin: 1.15rem 0 0;
  color: var(--color-muted);
  font-size: 1.05rem;
  line-height: 1.85;
}

.prose {
  counter-reset: article-section;
  padding-block: 1.5rem 2.5rem;
  color: var(--color-text);
  font-size: 1rem;
  line-height: 1.85;
}

.prose > :first-child {
  margin-top: 0;
}

.prose h2 {
  counter-increment: article-section;
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin: 2.8rem 0 1rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--article-h2-size);
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.35;
  text-wrap: pretty;
}

.prose h2::before {
  flex: 0 0 auto;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  content: counter(article-section, decimal-leading-zero);
}

.prose h3 {
  margin: 2rem 0 0.75rem;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--article-h3-size);
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.45;
  text-wrap: pretty;
}

.prose p {
  margin: 0 0 var(--blog-copy-gap);
}

.prose a {
  color: var(--color-accent);
  text-decoration-color: color-mix(in srgb, var(--color-accent) 55%, transparent);
  text-underline-offset: 0.2em;
}

.prose ul,
.prose ol {
  margin: 0 0 1.5rem;
  padding-left: 1.35rem;
}

.prose li + li {
  margin-top: 0.55rem;
}

.prose blockquote {
  margin: 1.8rem 0;
  padding: 1.15rem 1.35rem;
  border-left: 0.22rem solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: color-mix(in srgb, var(--color-accent) 8%, var(--color-panel));
  color: var(--color-text);
}

.prose blockquote p:last-child {
  margin-bottom: 0;
}

.prose table,
.prose > .data-table {
  width: 100%;
  margin: 1.75rem 0;
  border-collapse: collapse;
  border-spacing: 0;
  font-size: 0.92rem;
}

.prose th,
.prose td {
  min-width: 8rem;
  padding: 0.85rem 1rem;
  border: var(--blog-line-thin) solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.prose th {
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 700;
}

.prose tbody tr:nth-child(even) {
  background: color-mix(in srgb, var(--color-panel-raised) 65%, transparent);
}

.prose tbody tr:hover {
  background: color-mix(in srgb, var(--color-accent) 10%, var(--color-panel));
}

.prose pre {
  position: relative;
  margin: 1.8rem 0;
  padding: 3rem 1.25rem 1.25rem;
  overflow-x: auto;
  border: var(--blog-line-thin) solid var(--color-border);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-bg) 88%, var(--color-panel));
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.7;
}

.prose pre::before {
  position: absolute;
  inset: 0.75rem 0.9rem auto auto;
  padding: 0.2rem 0.5rem;
  border: var(--blog-line-thin) solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-muted);
  content: "终端";
  font-size: 0.68rem;
  letter-spacing: 0.08em;
}

.prose code {
  font-family: var(--font-mono);
}

.prose :not(pre) > code {
  padding: 0.12rem 0.35rem;
  border-radius: var(--radius-sm);
  background: var(--color-panel-raised);
  color: var(--color-accent);
}

.callout {
  position: relative;
  margin: 1.8rem 0;
  padding: 1.1rem 1.2rem 1.1rem 3.6rem;
  border-left: 0.22rem solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: color-mix(in srgb, var(--color-accent) 9%, var(--color-panel));
}

.callout::before {
  position: absolute;
  inset: 1rem auto auto 1rem;
  display: grid;
  width: 1.75rem;
  aspect-ratio: 1;
  place-items: center;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-bg);
  content: "i";
  font-family: var(--font-display);
  font-weight: 700;
}

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

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

.callout.success {
  border-left-color: var(--color-success);
  background: color-mix(in srgb, var(--color-success) 10%, var(--color-panel));
}

.callout.success::before {
  background: var(--color-success);
  content: "✓";
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
  margin: 1.8rem 0;
}

.stat-card {
  position: relative;
  min-width: 0;
  padding: 1.15rem;
  overflow: hidden;
  border: var(--blog-line-thin) solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
}

.stat-card::before {
  position: absolute;
  inset: 0 0 auto;
  height: 0.2rem;
  background: var(--color-accent);
  content: "";
}

.stat-card:nth-child(even) {
  background: color-mix(in srgb, var(--color-panel-raised) 86%, var(--color-bg));
}

.stat-card:nth-child(even)::before {
  background: var(--color-success);
}

.stat-card:nth-child(3n)::before {
  background: var(--color-warn);
}

.stat-num {
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: clamp(1.25rem, 3vw, 1.7rem);
  font-weight: 700;
}

.stat-label {
  margin-top: 0.35rem;
  color: var(--color-muted);
  font-size: 0.88rem;
  line-height: 1.55;
}

.check-list {
  display: grid;
  gap: 0.65rem;
  margin: 1.7rem 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  margin: 0;
  padding: 0.85rem 1rem;
  border: var(--blog-line-thin) solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
}

.verdict {
  margin: 1.8rem 0;
  padding: 1.1rem 1.25rem;
  border-left: 0.26rem solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: color-mix(in srgb, var(--color-accent) 10%, var(--color-panel-raised));
}

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

.promo-block {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  overflow: hidden;
  border: var(--blog-line-thin) solid var(--color-accent);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(
      125deg,
      color-mix(in srgb, var(--color-accent-dark) 90%, var(--color-panel)),
      color-mix(in srgb, var(--color-accent) 58%, var(--color-panel-raised))
    );
  color: var(--color-text);
}

.promo-block::before,
.promo-block::after {
  position: absolute;
  border: var(--blog-line-thin) solid color-mix(in srgb, var(--color-text) 35%, transparent);
  border-radius: var(--radius-pill);
  content: "";
  pointer-events: none;
}

.promo-block::before {
  inset: -4rem auto auto 48%;
  width: 12rem;
  aspect-ratio: 1;
}

.promo-block::after {
  inset: auto 4% -5rem auto;
  width: 9rem;
  aspect-ratio: 1;
}

.promo-copy,
.promo-block .button-row {
  position: relative;
  z-index: 1;
}

.promo-brand {
  margin: 0 0 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.promo-block h2 {
  margin: 0;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 400;
  letter-spacing: 0;
  text-wrap: pretty;
}

.promo-block p:not(.promo-brand) {
  max-width: 38rem;
  margin: 0.7rem 0 0;
  color: var(--color-text);
  line-height: 1.7;
}

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

.promo-block .btn-secondary {
  border-color: var(--color-text);
  background: color-mix(in srgb, var(--color-bg) 12%, transparent);
  color: var(--color-text);
}

#related-posts {
  padding-top: 2.75rem;
}

.related-heading {
  margin: 0 0 1.2rem;
  font-family: var(--font-display);
  font-size: var(--article-h2-size);
  font-weight: 400;
  letter-spacing: 0;
  text-wrap: pretty;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.related-card {
  position: relative;
  min-width: 0;
  padding: 1.15rem;
  border: var(--blog-line-thin) solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  transition:
    border-color var(--blog-transition),
    transform var(--blog-transition),
    background-color var(--blog-transition);
}

.related-card::before {
  position: absolute;
  inset: 0 20% auto;
  height: 0.16rem;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  content: "";
  opacity: 0;
  transition: inset var(--blog-transition), opacity var(--blog-transition);
}

.related-card:hover {
  border-color: var(--color-accent);
  background: var(--color-panel-raised);
  transform: translateY(-0.2rem);
}

.related-card:hover::before {
  inset-inline: 0;
  opacity: 1;
}

.related-meta {
  flex-wrap: wrap;
  font-size: 0.68rem;
}

.related-title {
  margin: 0.9rem 0 0.65rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.5;
  text-wrap: pretty;
}

.related-summary {
  display: -webkit-box;
  overflow: hidden;
  font-size: 0.88rem;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

#post-nav {
  padding-block: 1.75rem 3rem;
}

.post-nav-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.post-nav-card {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 7.5rem;
  flex-direction: column;
  justify-content: center;
  padding: 1rem 1.2rem;
  overflow: hidden;
  border: var(--blog-line-thin) solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  color: var(--color-text);
  text-decoration: none;
  transition:
    border-color var(--blog-transition),
    transform var(--blog-transition),
    background-color var(--blog-transition);
}

.post-nav-card::after {
  position: absolute;
  inset: auto 0 0;
  height: 0.16rem;
  background: var(--color-accent);
  content: "";
  opacity: 0;
  transition: opacity var(--blog-transition);
}

.post-nav-card:hover {
  border-color: var(--color-accent);
  background: var(--color-panel-raised);
  transform: translateY(-0.2rem);
}

.post-nav-card:hover::after {
  opacity: 1;
}

.post-nav-older {
  grid-column: 2;
  text-align: right;
}

.post-nav-label {
  margin-bottom: 0.4rem;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.post-nav-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
}

.float-cta {
  position: fixed;
  right: max(1rem, var(--gutter));
  bottom: max(1rem, var(--gutter));
  z-index: 20;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  min-height: 3rem;
  padding: 0.75rem 1.05rem;
  border: var(--blog-line-thin) solid var(--color-accent);
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 700;
  text-decoration: none;
  transition: transform var(--blog-transition), background-color var(--blog-transition);
}

.float-cta:hover {
  background: var(--color-accent-dark);
  transform: translateY(-0.18rem);
}

.float-cta svg {
  width: 1.15rem;
  height: 1.15rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
}

@media (max-width: 860px) {
  .article-grid,
  .related-grid {
    grid-template-columns: 1fr;
  }

  .blog-catalog-head,
  .promo-block {
    align-items: flex-start;
    flex-direction: column;
  }

  .prose table,
  .prose > .data-table {
    display: block;
    width: fit-content;
    max-width: 100%;
    overflow-x: auto;
    white-space: nowrap;
  }

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

@media (max-width: 640px) {
  .blog-index-hero {
    padding-block: 3.5rem;
  }

  .blog-filter {
    flex-wrap: nowrap;
    margin-inline: calc(var(--gutter) * -1);
    padding-inline: var(--gutter);
    overflow-x: auto;
    scrollbar-width: thin;
  }

  .blog-filter-button {
    flex: 0 0 auto;
  }

  .article-card {
    min-height: 0;
  }

  .article-hero .article-meta {
    flex-wrap: wrap;
  }

  .prose h2 {
    align-items: flex-start;
  }

  .promo-block .button-row {
    width: 100%;
  }

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

  .post-nav-older {
    grid-column: 1;
    text-align: left;
  }

  .float-cta {
    right: 0.75rem;
    bottom: 0.75rem;
    max-width: calc(100vw - 1.5rem);
    min-height: 2.75rem;
    padding: 0.65rem 0.85rem;
    font-size: 0.88rem;
  }
}

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

  .article-card:hover,
  .blog-filter-button:hover,
  .related-card:hover,
  .post-nav-card:hover,
  .float-cta:hover {
    transform: none;
  }
}