/* Substack-inspired reading layout */
.article-page {
  --read-max: 680px;
  --read-font: "Inter", ui-sans-serif, system-ui, sans-serif;
  --read-size: clamp(17px, 1.12vw, 18px);
  --read-leading: 1.72;
}

.article-page .container { max-width: var(--read-max); }

.article-head {
  text-align: center;
  padding-block: clamp(48px, 10vw, 88px);
  border-bottom: none;
  margin-bottom: 0;
}
.article-head .eyebrow { justify-content: center; }
.article-head h1 {
  font-family: var(--font-display, ui-sans-serif, system-ui, sans-serif);
  font-size: clamp(36px, 6vw, 56px);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -0.038em;
  margin-top: 20px;
  text-wrap: balance;
}
.article-head .dek {
  margin: 24px auto 0;
  font-family: var(--read-font);
  font-size: var(--type-md, clamp(17px, 1.55vw, 19px));
  font-weight: 400;
  line-height: 1.58;
  color: color-mix(in oklab, var(--fg) 62%, transparent);
  font-style: normal;
  max-width: 42ch;
}
.article-byline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border-soft);
}
.article-byline .avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--grad-blaze, linear-gradient(135deg, #ea2804, #ff5fa2));
  display: grid; place-items: center;
  font-family: var(--font-display, sans-serif); font-weight: 800; font-size: 16px;
  color: #120604; flex-shrink: 0;
}
.article-byline .byline-text { text-align: left; }
.article-byline .author-name { font-weight: 600; font-size: var(--type-ui, 14px); }
.article-byline .pub-date { font-family: var(--font-body, sans-serif); font-size: var(--type-xs, 12px); color: var(--muted); margin-top: 2px; }

.article-cover {
  margin: 40px auto 0;
  max-width: min(920px, 100%);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 24px 64px -32px rgba(0, 0, 0, 0.55);
}
.article-cover img { width: 100%; height: auto; display: block; }

/* Prose body */
.prose {
  font-family: var(--read-font);
  font-size: var(--read-size);
  line-height: var(--read-leading);
  color: color-mix(in oklab, var(--fg) 92%, transparent);
  margin-top: clamp(36px, 6vw, 52px);
  letter-spacing: 0.01em;
}
.prose > *:first-child { margin-top: 0; }

.prose .pt-p,
.prose p {
  margin-bottom: 1.35em;
  text-wrap: pretty;
}
.prose .pt-p:first-of-type,
.prose > p:first-of-type {
  font-size: 1.06em;
  color: var(--fg);
}
.prose .pt-p:first-of-type::first-letter,
.prose > p:first-of-type::first-letter {
  float: left;
  font-family: var(--font-display, sans-serif);
  font-size: 3.4em;
  line-height: 0.82;
  padding-right: 10px;
  padding-top: 6px;
  font-weight: 800;
  color: var(--fg);
}

.prose .pt-h1, .prose .pt-h2,
.prose h1, .prose h2 {
  font-family: var(--font-display, sans-serif);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin: 2.2em 0 0.65em;
  color: var(--fg);
}
.prose .pt-h1, .prose h1 { font-size: clamp(28px, 4vw, 36px); }
.prose .pt-h2, .prose h2 { font-size: clamp(24px, 3vw, 30px); }
.prose .pt-h3, .prose h3 {
  font-family: var(--font-display, sans-serif);
  font-size: clamp(20px, 2.2vw, 22px);
  font-weight: 700;
  margin: 1.8em 0 0.5em;
}

.prose .pt-quote,
.prose blockquote {
  margin: 2em 0;
  padding: 0 0 0 24px;
  border-left: 3px solid var(--accent);
  font-size: 1.12em;
  font-style: italic;
  color: color-mix(in oklab, var(--fg) 78%, transparent);
  line-height: 1.65;
}

.prose .pt-hr {
  border: none;
  height: 1px;
  background: var(--border-soft);
  margin: 2.5em auto;
  max-width: 120px;
}

.prose .pt-ul, .prose .pt-ol,
.prose ul, .prose ol {
  margin: 1.2em 0 1.5em;
  padding-left: 1.35em;
}
.prose .pt-ul-item, .prose .pt-ol-item,
.prose li { margin-bottom: 0.55em; }

.prose a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
.prose a:hover { text-decoration-thickness: 2px; }

.prose strong { font-weight: 700; color: var(--fg); }
.prose em { font-style: italic; }

.prose .pt-figure,
.prose figure {
  margin: 2.2em -12px;
}
.prose .pt-figure img,
.prose figure img {
  width: 100%;
  border-radius: 4px;
}
.prose .pt-figure figcaption,
.prose figure figcaption {
  font-family: var(--font-mono, monospace);
  font-size: 13px;
  color: var(--muted);
  text-align: center;
  margin-top: 10px;
}

.prose code {
  font-family: var(--font-mono, monospace);
  font-size: 0.88em;
  background: var(--surface);
  padding: 2px 7px;
  border-radius: 4px;
}
.prose pre {
  margin: 1.6em 0;
  padding: 16px 18px;
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
}
.prose pre code {
  padding: 0;
  background: transparent;
  font-size: 0.9em;
}
.prose hr {
  border: none;
  height: 1px;
  background: var(--border-soft);
  margin: 2.5em auto;
  max-width: 120px;
}

.article-end {
  margin-top: 3em;
  padding-top: 2em;
  border-top: 1px solid var(--border-soft);
  text-align: center;
}
.article-end .pill { margin-bottom: 12px; }

/* Post page shell (dark reading layout) */
.article-page {
  --bg: #0b0b0d;
  --surface: #161619;
  --fg: #f6f5f2;
  --fg-2: #cdccc6;
  --muted: #9a9a97;
  --meta: #6f6f6d;
  --border: #2b2b30;
  --border-soft: #1f1f23;
  --accent: #ea2804;
  --container-max: 720px;
  --text-sm: 14px;
  --space-3: 12px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --radius-pill: 9999px;
  --motion-fast: 120ms;
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
}

/* Base reset + topnav (index/blog keep these inline; post page needs them here) */
.article-page a { color: inherit; text-decoration: none; }
.article-page button {
  font: inherit;
  cursor: pointer;
  background: none;
  border: none;
  margin: 0;
}
.article-page img { display: block; max-width: 100%; }

.article-page .topnav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--bg) 16%, transparent);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border-bottom: 1px solid color-mix(in oklab, var(--fg) 7%, transparent);
}
.article-page .topnav .container {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(12px, 4vw, 40px);
}
.article-page .topnav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding-block: 14px;
}
.article-page .topnav nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}
.article-page .topnav nav a {
  font-size: var(--text-sm);
  color: var(--muted);
  transition: color var(--motion-fast) var(--ease-standard);
}
.article-page .topnav nav a:hover,
.article-page .topnav nav a.active {
  color: var(--fg);
}
.article-page .nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.article-page .lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border: 1px solid color-mix(in oklab, var(--fg) 10%, transparent);
  border-radius: var(--radius-pill);
  background: color-mix(in oklab, var(--bg) 32%, transparent);
  backdrop-filter: blur(10px);
}
.article-page .lang-opt {
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 11px;
  letter-spacing: 0.06em;
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  color: var(--muted);
  transition: color var(--motion-fast) var(--ease-standard),
    background var(--motion-fast) var(--ease-standard);
  appearance: none;
  -webkit-appearance: none;
  font-weight: inherit;
  line-height: inherit;
  background: transparent;
}
.article-page .lang-opt:hover { color: var(--fg); }
.article-page .lang-opt.is-active {
  background: color-mix(in oklab, var(--fg) 14%, transparent);
  color: var(--fg);
}

@media (max-width: 880px) {
  .article-page .topnav nav { display: none; }
}
.article-page body,
body.article-page {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body, ui-sans-serif, system-ui, sans-serif);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
.article-page .container { max-width: var(--container-max); margin-inline: auto; padding-inline: clamp(16px, 4vw, 40px); }
.article-page .link-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 32px;
}
.article-page .link-back::before { content: "←"; }
.article-page .link-back:hover { color: var(--fg); }
.article-page .state-msg { padding: 80px 0; text-align: center; color: var(--muted); }
.article-page .pagefoot {
  border-top: 1px solid var(--border-soft);
  padding-block: 32px;
  margin-top: 48px;
}
.article-page .foot-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 40px);
}
.article-page .foot-links { display: flex; gap: 24px; }
.article-page .foot-links a { font-size: 14px; color: var(--muted); }
.article-page .foot-links a:hover { color: var(--fg); }
.article-page main { padding-top: 72px; padding-bottom: 48px; }
.article-page .related-section {
  margin-top: clamp(48px, 8vw, 80px);
  padding-top: 32px;
  border-top: 1px solid var(--border-soft);
}
.article-page .related-section h2 {
  font-family: var(--font-display, ui-sans-serif, system-ui, sans-serif);
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  margin-bottom: 24px;
}
.article-page .post-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(28px, 3.5vw, 48px);
}
@media (max-width: 880px) {
  .article-page .post-grid { grid-template-columns: 1fr; }
}