:root {
  --bg: #fbfaf6;
  --ink: #161613;
  --ink-soft: #5a584f;
  --rule: #e8e5db;
  --accent: #2e7d52;
  --muted-bg: #f0ede4;
  --serif: "Fraunces", Georgia, serif;
  --sans: "Geist", system-ui, sans-serif;
  --mono: "Geist Mono", ui-monospace, monospace;
  --measure: 64ch;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--accent); }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.muted { color: var(--ink-soft); }

/* Header */
.site-header {
  border-bottom: 1px solid var(--rule);
  padding: 18px 0;
  position: sticky;
  top: 0;
  background: rgba(251, 250, 246, 0.92);
  backdrop-filter: blur(8px);
  z-index: 10;
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 500;
  text-decoration: none;
  font-style: italic;
}
.site-header nav { display: flex; gap: 24px; font-size: 15px; }
.site-header nav a:not(.btn) { text-decoration: none; color: var(--ink-soft); }
.site-header nav a:not(.btn):hover { color: var(--ink); }

/* Hero */
.hero { padding: 72px 24px 48px; max-width: 880px; }
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  margin: 0 0 16px;
}
.hero h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
}
.hero h1 em { font-style: italic; color: var(--accent); }
.lede {
  font-size: 19px;
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 60ch;
  margin: 0;
}

/* Catalog */
.catalog { padding: 64px 24px; }
.catalog h2,
.about h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 32px;
  margin: 0 0 16px;
  letter-spacing: -0.01em;
}
.section-h2 { margin-top: 64px !important; }
.section-note { color: var(--ink-soft); margin: 0 0 32px; max-width: 60ch; }

.ext-list { list-style: none; padding: 0; margin: 0; }
.ext-item {
  padding: 32px 0;
  border-top: 1px solid var(--rule);
}
.ext-item:last-child { border-bottom: 1px solid var(--rule); }
.ext-item h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 26px;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.ext-item h3 a { text-decoration: none; }
.ext-item h3 a:hover { color: var(--accent); }
.ext-item p { margin: 0 0 8px; max-width: var(--measure); }
.ext-item .meta { font-family: var(--mono); font-size: 13px; color: var(--ink-soft); }
.ext-item.pending { opacity: 0.88; }

.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 3px 8px;
  background: var(--muted-bg);
  color: var(--ink-soft);
  border-radius: 4px;
  font-weight: 500;
  vertical-align: middle;
}
.badge-inline { font-size: 12px; padding: 4px 10px; }

/* About */
.about { padding: 32px 24px 80px; }
.about p { max-width: var(--measure); }

/* Buttons */
.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 10px 18px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  text-decoration: none;
  color: var(--ink);
  background: transparent;
  transition: background 0.15s, color 0.15s;
}
.btn:hover { background: var(--ink); color: var(--bg); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--ink); border-color: var(--ink); }

/* TL;DR box */
.tldr {
  border: 1px solid var(--rule);
  background: var(--muted-bg);
  border-radius: 12px;
  padding: 24px 28px;
  margin: 0 0 40px;
}
.tldr-label {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin: 0 0 12px;
  font-weight: 500;
}
.tldr ul { margin: 0 0 18px; padding-left: 20px; }
.tldr li { margin-bottom: 6px; }
.tldr li:last-child { margin-bottom: 0; }
.tldr .btn { margin-top: 4px; }

/* FAQ */
.faq details {
  border-top: 1px solid var(--rule);
  padding: 18px 0;
}
.faq details:last-of-type { border-bottom: 1px solid var(--rule); }
.faq summary {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 18px;
  cursor: pointer;
  letter-spacing: -0.005em;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before {
  content: "+ ";
  color: var(--accent);
  font-family: var(--mono);
  margin-right: 6px;
}
.faq details[open] summary::before { content: "− "; }
.faq details > p,
.faq details > ul { margin-top: 12px; }

/* Tool callout box — mid-article CTA */
.tool-callout {
  border: 1px solid var(--accent);
  border-radius: 12px;
  padding: 24px 28px;
  margin: 32px 0;
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.tool-callout-label {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin: 0;
  font-weight: 500;
}
.tool-callout h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 22px;
  margin: 0;
  letter-spacing: -0.005em;
}
.tool-callout p { margin: 0; max-width: 56ch; }
.tool-callout .btn { align-self: flex-start; margin-top: 4px; }

/* Article hub */
.article-hub { padding: 56px 24px 80px; }
.article-hub h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}
.article-hub .lede { font-size: 19px; color: var(--ink-soft); max-width: 60ch; margin: 0 0 48px; }
.article-card {
  padding: 28px 0;
  border-top: 1px solid var(--rule);
}
.article-card:last-child { border-bottom: 1px solid var(--rule); }
.article-card h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 24px;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
.article-card h2 a { text-decoration: none; }
.article-card h2 a:hover { color: var(--accent); }
.article-card p { margin: 0 0 8px; max-width: var(--measure); color: var(--ink-soft); }
.article-card .meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
  margin: 0;
}

/* Sponsor line */
.sponsor {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 8px;
}
.sponsor a { color: var(--ink-soft); }
.sponsor a:hover { color: var(--accent); }

/* Article */
.article { max-width: 720px; padding: 56px 24px 80px; }
.article-header { margin-bottom: 48px; }
.article-header .eyebrow a { text-decoration: none; }
.article-header h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}
.article-header .lede { font-size: 20px; color: var(--ink-soft); margin: 0 0 24px; }
.article-meta {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.hero-shot {
  margin: 0 0 48px;
  border: 1px solid var(--rule);
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-shot img { display: block; width: 100%; height: auto; }
.article section { margin-bottom: 40px; }
.article h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 24px;
  margin: 0 0 16px;
  letter-spacing: -0.01em;
}
.article p, .article li { max-width: var(--measure); }
.article-footer {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.prev-next {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-soft);
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.prev-next a { text-decoration: none; color: var(--ink); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--rule);
  padding: 32px 0;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
}

@media (max-width: 600px) {
  .hero { padding-top: 48px; }
}