:root {
  --blog-reading: 56rem;
  --blog-gutter: max(1.5rem, var(--gutter));
  --blog-body-size: 1rem;
  --blog-body-leading: 1.85;
  --blog-h1: clamp(1.8rem, 4vw, 2.6rem);
  --blog-list-h1: clamp(2rem, 4.5vw, 3rem);
  --blog-h2: clamp(1.25rem, 2.5vw, 1.6rem);
  --blog-h3: clamp(1.1rem, 2vw, 1.3rem);
  --blog-small: 0.82rem;
  --blog-tracking: -0.015em;
  --blog-stamp-size: 6.5rem;
  --blog-shade: color-mix(in srgb, var(--ink) 48%, var(--clear));
  --blog-warn-tint: color-mix(in srgb, var(--warn) 10%, var(--panel));
  --blog-success-tint: color-mix(in srgb, var(--success) 10%, var(--panel));
  --blog-accent-tint: color-mix(in srgb, var(--accent) 7%, var(--panel));
  --blog-focus: var(--accent);
  --blog-transition: 180ms;
  --blog-modal-layer: 1000;
  --blog-float-layer: 30;
}

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

.blog-index main,
.blog-article main {
  min-width: 0;
}

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

.blog-index :is(a, button):focus-visible,
.blog-article :is(a, button):focus-visible,
.blog-modal-overlay :is(a, button):focus-visible,
.float-cta:focus-visible {
  outline: 3px solid var(--blog-focus);
  outline-offset: 4px;
}

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

.breadcrumbs,
.breadcrumb {
  margin-top: 1.5rem;
  margin-bottom: 1.25rem;
  padding-top: 0.25rem;
  font-size: var(--blog-small);
  color: var(--text-muted);
  line-height: 1.8;
  overflow-wrap: anywhere;
}

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

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

.blog-hero,
.article-hero {
  position: relative;
  isolation: isolate;
  padding-block: 2rem;
  padding-inline: var(--blog-gutter);
  border-radius: var(--r);
  background: var(--panel);
  box-shadow: var(--sh-12);
  overflow: hidden;
}

.blog-hero::after,
.article-hero::after {
  content: "MV";
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: var(--blog-stamp-size);
  height: var(--blog-stamp-size);
  display: grid;
  place-items: center;
  border: 1px solid var(--accent);
  border-radius: var(--r-dot);
  outline: 1px solid var(--accent);
  outline-offset: -7px;
  color: var(--accent);
  font: 900 1.65rem var(--font-mono);
  letter-spacing: 0.08em;
  transform: rotate(-11deg);
  opacity: 0.75;
  pointer-events: none;
}

.blog-hero > *,
.article-hero > * {
  position: relative;
  margin-right: calc(var(--blog-stamp-size) + 1rem);
}

.blog-hero h1,
.article-hero h1 {
  font-size: var(--blog-h1);
  line-height: 1.3;
  margin-top: 1rem;
  margin-bottom: 1rem;
  font-weight: 900;
  text-wrap: pretty;
}

.blog-list-hero h1 {
  font-size: var(--blog-list-h1);
}

.blog-hero > p:last-child,
.article-hero > p:last-child {
  color: var(--text-muted);
  font-size: var(--blog-body-size);
  line-height: var(--blog-body-leading);
  margin-bottom: 0;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: var(--blog-small);
  line-height: 1.5;
}

.article-meta time,
.article-meta .read-time,
.article-meta .reading-time {
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  font-variant-numeric: tabular-nums;
}

.blog-tag {
  display: inline-block;
  padding: 0.3rem 0.65rem;
  border-radius: var(--r-pill);
  color: var(--white);
  background: var(--accent-dark);
  font-size: var(--blog-small);
  font-weight: 600;
}

.blog-catalog {
  margin-top: 2rem;
}

.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.blog-filter {
  appearance: none;
  padding: 0.6rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--panel);
  color: var(--text-muted);
  font: inherit;
  cursor: pointer;
  transition: background var(--blog-transition), border-color var(--blog-transition);
}

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

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

.blog-status {
  color: var(--text-muted);
  font-size: var(--blog-small);
  margin-block: 1rem;
  min-height: 1.5em;
}

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

.article-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-top: 3px solid var(--border);
  border-radius: var(--r);
  background: var(--panel);
  box-shadow: var(--sh-1);
  transition: border-color var(--blog-transition), transform var(--blog-transition);
}

.article-card:hover,
.article-card:focus-within {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.article-card h2,
.article-card h3 {
  display: block;
  margin-block: 1rem 0.75rem;
  font-size: var(--blog-h3);
  line-height: 1.55;
  text-wrap: pretty;
  letter-spacing: var(--blog-tracking);
}

.article-card h2 a,
.article-card h3 a {
  color: var(--text);
  text-decoration: none;
}

.article-card > p {
  margin-top: 0;
  color: var(--text-muted);
  line-height: 1.8;
  font-size: var(--blog-body-size);
}

.article-more {
  align-self: flex-start;
  margin-top: auto;
  padding-top: 0.75rem;
  color: var(--accent-dark);
  font-weight: 600;
  text-underline-offset: 0.25em;
}

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

.article-body,
.blog-article .prose,
.reading-wrap {
  font-size: var(--blog-body-size);
  line-height: var(--blog-body-leading);
  color: var(--text);
  counter-reset: blog-chapter;
}

.article-body,
.blog-article .prose {
  min-width: 0;
  overflow-wrap: anywhere;
}

.reading-wrap {
  padding-top: 1.5rem;
  padding-bottom: 1.5rem;
}

.article-body h2,
.blog-article .prose h2,
.reading-wrap h2 {
  font-size: var(--blog-h2);
  line-height: 1.5;
  margin-block: 2rem 1rem;
  scroll-margin-top: var(--anchor-offset);
}

.article-body h2::before,
.blog-article .prose h2::before,
.reading-wrap h2::before {
  counter-increment: blog-chapter;
  content: counter(blog-chapter, decimal-leading-zero);
  display: inline-block;
  vertical-align: 0.1em;
  margin-right: 0.65rem;
  padding: 0.1rem 0.45rem;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  color: var(--accent-dark);
  background: var(--panel);
  font: 600 var(--blog-small) var(--font-mono);
  letter-spacing: normal;
}

.article-body h3,
.blog-article .prose h3,
.reading-wrap h3 {
  font-size: var(--blog-h3);
  line-height: 1.55;
  margin-block: 1.5rem 0.75rem;
}

.reading-wrap > h2:first-child,
.article-body > h2:first-child,
.blog-article .prose > h2:first-child,
.reading-wrap > section:first-child > h2:first-child {
  margin-top: 0.5rem;
}

.article-body p,
.blog-article .prose p {
  margin-block: 0 1.1rem;
}

.article-body :is(ul, ol),
.blog-article .prose :is(ul, ol) {
  padding-left: 1.5rem;
  margin-block: 1rem 1.5rem;
}

.article-body li,
.blog-article .prose li {
  margin-block: 0.45rem;
}

.article-body a,
.blog-article .prose a {
  color: var(--accent-dark);
  text-underline-offset: 0.22em;
}

.article-body img,
.blog-article .prose img {
  max-width: 100%;
  height: auto;
  border-radius: var(--r);
}

.article-body code,
.blog-article .prose code {
  font-family: var(--font-mono);
  overflow-wrap: anywhere;
}

.article-body :not(pre) > code,
.blog-article .prose :not(pre) > code {
  padding: 0.15rem 0.35rem;
  color: var(--accent-dark);
  background: var(--panel-2);
  border-radius: var(--r);
}

.article-body pre,
.blog-article .prose pre {
  position: relative;
  max-width: 100%;
  box-sizing: border-box;
  padding: 3rem 1.25rem 1.25rem;
  margin-block: 1.5rem;
  overflow-x: auto;
  border: 1px solid var(--win-edge);
  border-radius: var(--r);
  color: var(--win-text);
  background: linear-gradient(var(--win-top), var(--win-bottom));
  line-height: 1.7;
}

.article-body pre::before,
.blog-article .prose pre::before {
  content: "CONFIG / 参数";
  position: absolute;
  top: 0.85rem;
  left: 1.25rem;
  color: var(--win-muted);
  font: 500 var(--blog-small) var(--font-mono);
}

.article-body pre code,
.blog-article .prose pre code {
  white-space: pre;
  overflow-wrap: normal;
  background: var(--clear);
  color: inherit;
}

.article-body .table-scroll,
.blog-article .prose .table-scroll {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  margin-block: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--r);
}

.article-body table,
.blog-article .prose table {
  border-collapse: collapse;
  width: 100%;
  margin-block: 1.5rem;
  font-size: var(--blog-body-size);
  background: var(--panel);
}

.article-body .table-scroll table,
.blog-article .prose .table-scroll table {
  margin: 0;
}

.article-body :is(th, td),
.blog-article .prose :is(th, td) {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.article-body thead th,
.blog-article .prose thead th {
  background: var(--ink);
  color: var(--white);
}

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

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

.callout,
.article-body blockquote,
.blog-article .prose blockquote {
  position: relative;
  margin: 1.5rem 0;
  padding: 1.25rem 1.25rem 1.25rem 3.25rem;
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--r);
  background: var(--blog-accent-tint);
  color: var(--text);
}

.callout::before,
.article-body blockquote::before,
.blog-article .prose blockquote::before {
  content: "i";
  position: absolute;
  top: 1.25rem;
  left: 1rem;
  width: 1.4rem;
  height: 1.4rem;
  border: 1px solid currentColor;
  border-radius: var(--r-dot);
  text-align: center;
  font: 700 var(--blog-small)/1.4rem var(--font-mono);
  color: var(--accent-dark);
}

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

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

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

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

.callout p:last-child,
.article-body blockquote p:last-child,
.blog-article .prose blockquote p:last-child {
  margin-bottom: 0;
}

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

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

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

.stat-num {
  display: block;
  color: var(--text);
  font: 800 1.6rem/1.4 var(--font-display);
  font-variant-numeric: tabular-nums;
}

.stat-label {
  display: block;
  margin-top: 0.4rem;
  color: var(--text-muted);
  font-size: var(--blog-small);
}

.article-body .check-list,
.blog-article .prose .check-list,
.check-list {
  padding: 0;
  list-style: none;
  margin-block: 1.5rem;
}

.check-list li {
  padding: 0.85rem 1rem;
  margin-block: 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: var(--panel);
}

.verdict {
  padding: 1rem 1.25rem;
  margin-block: 1.5rem;
  border-left: 4px solid var(--accent);
  border-radius: var(--r);
  color: var(--text);
  background: var(--blog-accent-tint);
}

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

.promo-block {
  box-sizing: border-box;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
  padding: 1.5rem;
  margin-block: 2rem 1.5rem;
  border: 1px solid var(--accent-dark);
  border-radius: var(--r);
  background: linear-gradient(120deg, var(--accent-dark), var(--accent));
  color: var(--white);
  box-shadow: var(--sh-12);
}

.promo-copy {
  flex: 1 1 18rem;
  min-width: 0;
}

.promo-block .promo-brand {
  margin-block: 0 0.4rem;
  font: 900 1.3rem var(--font-display);
  color: var(--white);
}

.promo-block .promo-copy p {
  color: var(--white);
  margin-bottom: 0;
  line-height: 1.8;
}

.promo-block .btn-main {
  background: var(--white);
  color: var(--accent-dark);
  border-color: var(--white);
  box-shadow: var(--sh-1);
}

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

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

#related-posts > h2 {
  font-size: var(--blog-h2);
  line-height: 1.5;
  margin-block: 0 1rem;
}

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

#post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  padding-block: 1.25rem 1.5rem;
}

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

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

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

.post-nav-label {
  display: block;
  margin-bottom: 0.6rem;
  color: var(--accent-dark);
  font-size: var(--blog-small);
}

.post-nav-card strong {
  display: block;
  line-height: 1.65;
}

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

.blog-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--blog-modal-layer);
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background: var(--blog-shade);
  opacity: 0;
  transition: opacity var(--blog-transition);
  overflow-y: auto;
}

.blog-modal-overlay.is-open {
  opacity: 1;
}

.blog-modal-overlay.is-closing {
  pointer-events: none;
}

.blog-modal-panel {
  position: relative;
  box-sizing: border-box;
  width: 100%;
  max-width: 28rem;
  max-height: calc(100dvh - 3rem);
  overflow-y: auto;
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: var(--r);
  color: var(--text);
  background: var(--panel);
  box-shadow: var(--sh-18);
  transform: translateY(8px);
  transition: transform var(--blog-transition);
  font-family: var(--font-body);
}

.is-open .blog-modal-panel {
  transform: translateY(0);
}

.blog-modal-panel h2 {
  display: block;
  font: 900 1.6rem/1.4 var(--font-display);
  margin-block: 0.5rem 1rem;
  text-wrap: pretty;
}

.blog-modal-panel p {
  line-height: var(--blog-body-leading);
}

.blog-modal-panel .blog-modal-eyebrow {
  color: var(--accent-dark);
  font-size: var(--blog-small);
  margin-top: 0;
  padding-right: 2.5rem;
}

.blog-modal-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  color: var(--text);
  background: var(--panel-2);
  font: 500 1.5rem var(--font-body);
  cursor: pointer;
}

.blog-modal-close:hover {
  border-color: var(--accent);
}

.float-cta {
  position: fixed;
  right: 1.5rem;
  bottom: max(1.5rem, env(safe-area-inset-bottom));
  z-index: var(--blog-float-layer);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.25rem;
  max-width: calc(100vw - 3rem);
  box-sizing: border-box;
  border: 1px solid var(--ink);
  border-radius: var(--r-pill);
  background: var(--ink);
  color: var(--white);
  box-shadow: var(--sh-cta);
  font: 700 var(--blog-body-size)/1.4 var(--font-body);
  text-decoration: none;
}

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

.float-cta:hover {
  border-color: var(--accent);
}

@media (max-width: 1000px) {
  .blog-card-grid,
  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

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

  .blog-hero::after,
  .article-hero::after {
    display: none;
  }

  .blog-hero > *,
  .article-hero > * {
    margin-right: 0;
  }

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

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

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

  .article-card {
    padding: 1.25rem;
  }

  .blog-modal-panel {
    padding: 1.5rem;
  }

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

  .blog-article:has(.float-cta) {
    padding-bottom: calc(5rem + env(safe-area-inset-bottom));
  }

  .float-cta {
    right: 1rem;
    bottom: max(0.75rem, env(safe-area-inset-bottom));
    padding: 0.7rem 1rem;
    max-width: calc(100vw - 2rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .article-card,
  .post-nav-card,
  .blog-filter,
  .blog-modal-overlay,
  .blog-modal-panel {
    transition: none;
  }

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