.code-block {
    margin: 1.6em 0;
    border-radius: 10px;
    overflow: hidden;
    font-size: 0.92rem;
    line-height: 1.6;
    background: #0d1017;
    border: 1px solid var(--color-border);
  }
  .code-block__header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    background: var(--color-surface-2);
    border-bottom: 1px solid var(--color-border);
    font-family: var(--font-mono);
    font-size: 0.75rem;
  }
  .code-block__lang {
    color: var(--color-accent);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
  }
  .code-block__filename {
    color: var(--color-text-dim);
  }
  .code-block pre.shiki {
    margin: 0;
    padding: 18px 20px;
    overflow-x: auto;
    font-family: var(--font-mono);
    -moz-tab-size: 2;
      -o-tab-size: 2;
         tab-size: 2;
    background: transparent !important;
  }
  .code-block pre.shiki code {
    font-family: inherit;
    background: transparent;
  }.callout {
    display: grid;
    grid-template-columns: 28px 1fr;
    gap: 14px;
    margin: 1.8em 0;
    padding: 18px 22px;
    border-radius: 10px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
  }
  .callout__icon {
    width: 26px;
    height: 26px;
    border-radius: 8px;
    display: grid;
    place-items: center;
    font-family: var(--font-sans);
    font-weight: 700;
    font-size: 14px;
    color: white;
    margin-top: 2px;
  }
  .callout__title {
    font-family: var(--font-sans);
    font-weight: 700;
    margin: 0 0 6px;
    color: var(--color-text);
  }
  .callout__body :first-child { margin-top: 0; }
  .callout__body :last-child { margin-bottom: 0; }
  .callout__body p { color: var(--color-text-muted); margin: 0.4em 0; }

  .callout--note    { border-color: color-mix(in srgb, var(--color-info) 30%, var(--color-border)); }
  .callout--note    .callout__icon { background: var(--color-info); }
  .callout--insight { border-color: color-mix(in srgb, var(--color-accent) 40%, var(--color-border)); background: color-mix(in srgb, var(--color-accent-soft) 18%, var(--color-surface)); }
  .callout--insight .callout__icon { background: var(--color-accent); }
  .callout--warning { border-color: color-mix(in srgb, var(--color-warning) 30%, var(--color-border)); }
  .callout--warning .callout__icon { background: var(--color-warning); color: #000; }
  .callout--tip     { border-color: color-mix(in srgb, var(--color-success) 30%, var(--color-border)); }
  .callout--tip     .callout__icon { background: var(--color-success); color: #000; }

  @media (max-width: 640px) {
    .callout {
      grid-template-columns: 24px 1fr;
      gap: 12px;
      padding: 14px 16px;
    }
  }.comparison {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin: 2em 0;
  }
  @media (min-width: 768px) {
    .comparison { grid-template-columns: 1fr 1fr; }
  }
  .comparison__col {
    border: 1px solid var(--color-border);
    border-radius: 10px;
    background: var(--color-surface);
    overflow: hidden;
  }
  .comparison__label {
    padding: 10px 16px;
    background: var(--color-surface-2);
    border-bottom: 1px solid var(--color-border);
    font-family: var(--font-sans);
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-text-muted);
  }
  .comparison__body { padding: 16px 20px; color: var(--color-text); }
  .comparison__body :first-child { margin-top: 0; }
  .comparison__body :last-child { margin-bottom: 0; }
  .comparison__body .code-block { margin: 10px 0; }.pull-quote {
    margin: 2.4em 0;
    padding: 24px 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    position: relative;
  }
  .pull-quote__mark {
    position: absolute;
    top: -10px;
    left: 0;
    font-family: var(--font-sans);
    font-size: clamp(3rem, 12vw, 5rem);
    line-height: 1;
    color: var(--color-accent);
    opacity: 0.4;
  }
  .pull-quote blockquote {
    margin: 0;
    padding: 0 0 0 clamp(36px, 9vw, 56px);
  }
  .pull-quote blockquote p {
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: clamp(1.15rem, 4vw, 1.55rem);
    line-height: 1.35;
    letter-spacing: -0.01em;
    margin: 0;
    color: var(--color-text);
  }
  .pull-quote figcaption {
    margin-top: 14px;
    padding-left: clamp(36px, 9vw, 56px);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    color: var(--color-text-dim);
  }.diagram {
    margin: 2em 0;
    padding: 20px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    overflow-x: auto;
  }
  .diagram svg { max-width: 100%; height: auto; }
  .diagram figcaption {
    margin-top: 12px;
    font-family: var(--font-sans);
    font-size: 0.88rem;
    color: var(--color-text-dim);
    text-align: center;
  }.sidenote {
    margin: 1.8em 0;
    padding: 16px 20px;
    border-left: 2px solid var(--color-accent);
    background: color-mix(in srgb, var(--color-accent-soft) 10%, transparent);
    font-size: 0.95em;
    color: var(--color-text-muted);
    border-radius: 0 6px 6px 0;
  }
  .sidenote__title {
    font-family: var(--font-sans);
    font-weight: 700;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--color-accent);
    margin: 0 0 8px;
  }
  .sidenote__body :first-child { margin-top: 0; }
  .sidenote__body :last-child { margin-bottom: 0; }.post-image { margin: 2em 0; }
  .post-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    display: block;
    border: 1px solid var(--color-border);
  }
  .post-image figcaption {
    margin-top: 10px;
    font-family: var(--font-sans);
    font-size: 0.88rem;
    color: var(--color-text-dim);
    text-align: center;
  }.post {
    max-width: 680px;
    margin: 0 auto;
  }
  .post__header {
    padding: 24px 0 32px;
  }
  .post__category {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--color-accent);
    margin-bottom: 1em;
  }
  .post__title {
    font-family: var(--font-sans);
    font-weight: 700;
    font-size: clamp(2rem, 5.5vw, 3.5rem);
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin: 0 0 0.5em;
    color: var(--color-text);
  }
  .post__excerpt {
    font-family: var(--font-sans);
    font-weight: 400;
    font-size: 1.25rem;
    line-height: 1.5;
    color: var(--color-text-muted);
    margin: 0 0 1.5em;
  }
  .post__byline {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px 16px;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    color: var(--color-text-dim);
  }
  .post__reading { color: var(--color-text-dim); }
  .post__author {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text-muted);
    font-weight: 500;
  }
  .post__author:hover { color: var(--color-text); }
  .post__avatar {
    border-radius: 999px;
    width: 32px;
    height: 32px;
    border: 1px solid var(--color-border-strong);
  }
  .post__role { color: var(--color-text-dim); font-weight: 400; }
  .post__cover {
    display: block;
    width: 100%;
    border-radius: 10px;
    overflow: hidden;
    margin: 0 0 40px;
    border: 1px solid var(--color-border);
    background-size: cover;
    background-position: center;
    background-color: var(--color-surface);
  }
  .post__cover img {
    display: block;
    width: 100%;
    height: auto;
  }

  .post__body {
    font-family: var(--font-sans);
    font-weight: 400;
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-text);
  }
  .post__body > * { margin-top: 0; margin-bottom: 1.1em; }
  .post__body p { margin: 0 0 1.1em; }
  .post__body h2, .post__body h3, .post__body h4 {
    font-family: var(--font-sans);
    font-weight: 700;
    letter-spacing: -0.015em;
    line-height: 1.2;
    color: var(--color-text);
    margin-top: 2em;
    margin-bottom: 0.6em;
  }
  .post__body h2 { font-size: 1.85rem; }
  .post__body h3 { font-size: 1.4rem; }
  .post__body h4 { font-size: 1.15rem; }
  .post__body a {
    color: var(--color-accent);
    text-decoration: underline;
    text-decoration-color: color-mix(in srgb, var(--color-accent) 40%, transparent);
    text-underline-offset: 3px;
  }
  .post__body a:hover {
    color: var(--color-accent-hover);
    text-decoration-color: var(--color-accent-hover);
  }
  .post__body code:not(pre code) {
    background: var(--color-surface-2);
    color: var(--color-accent-hover);
    padding: 2px 7px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.88em;
    border: 1px solid var(--color-border);
  }
  .post__body ul, .post__body ol {
    padding-left: 1.5em;
    margin: 0 0 1.1em;
  }
  .post__body li { margin: 0.3em 0; }
  .post__body li::marker { color: var(--color-accent); }
  .post__body blockquote {
    margin: 1.5em 0;
    padding: 0.5em 0 0.5em 1.2em;
    border-left: 3px solid var(--color-accent);
    color: var(--color-text-muted);
    font-style: italic;
  }
  .post__body strong { color: var(--color-text); font-weight: 700; }

  .post__tags {
    list-style: none;
    padding: 0;
    margin: 60px 0 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.82rem;
  }
  .post__tags li {
    padding: 4px 10px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    color: var(--color-text-muted);
  }

  @media (max-width: 640px) {
    .post__header { padding: 16px 0 24px; }
    .post__excerpt { font-size: 1.05rem; }
    .post__cover {
      margin: 0 0 28px;
      border-radius: 8px;
    }
    .post__body { font-size: 1.0625rem; }
    .post__body h2,
    .post__body h3,
    .post__body h4 { margin-top: 1.5em; }
    .post__body h2 { font-size: 1.5rem; }
    .post__body h3 { font-size: 1.2rem; }
    .post__body h4 { font-size: 1.05rem; }
    .post__tags { margin: 36px 0 16px; }
  }