/* SmartFACT blog. Tokens follow web.smartfact.ai's marketing.css (same font stack, no web fonts).
   Layout: one reading column of 38rem; photographs step out to 46rem, the hero, banner and pairs to 64rem. */
:root {
  --paper: #fafbf7;
  --ink: #202b26;
  --muted: #58635d;
  --line: #dbe1d8;
  --accent: #155941;
  --soft: #e9f0e6;
  --wash: #f0f3ec;
  --on-photo: #1f2d27; /* text set on the light wall of a photograph, in both themes */
  --font: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --text: 38rem;
  --figure: 46rem;
  --wide: 64rem;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #121714;
    --ink: #e4ebe6;
    --muted: #9eaaa3;
    --line: #2b3530;
    --accent: #8fd1a9;
    --soft: #1c2621;
    --wash: #18201c;
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  padding-inline: 16px;
}
img { max-width: 100%; height: auto; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 2px; }

.skip-link { position: absolute; left: -999px; top: 0; }
.skip-link:focus { left: 16px; top: 8px; z-index: 10; background: var(--paper); padding: 0.5rem 0.75rem; }

/* Header and footer, as on smartfact.ai. */
.site-header, .site-footer { max-width: var(--wide); margin: 0 auto; }
.site-header {
  padding-block: 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.125rem;
  line-height: 1.15;
}
.brand small { display: block; font-weight: 500; font-size: 0.8125rem; color: var(--muted); letter-spacing: 0.02em; }
.site-header nav, .site-footer nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1.25rem; }
.site-header nav { font-size: 0.9375rem; }
.site-header nav a { color: var(--ink); text-decoration: none; }
.site-header nav a:hover { text-decoration: underline; }
.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 1.5rem 2.5rem;
  display: grid;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--muted);
}
.site-footer a { color: var(--muted); }
.site-footer p { margin: 0; }

main { padding-block: 0 3.5rem; }

/* Pages: one centred column; figures and wide blocks step out of it. */
.page {
  display: grid;
  justify-items: center;
  gap: 1.35rem;
  padding-block: 3rem 0;
}
.page > * { width: 100%; max-width: var(--text); margin: 0; min-width: 0; }
.page > figure, .page > .post-list { max-width: var(--figure); }
.page > .wide { max-width: var(--wide); }

.eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}
h1 {
  font-size: clamp(2rem, 5.2vw, 3.1rem);
  line-height: 1.12;
  letter-spacing: -0.025em;
  font-weight: 700;
  text-wrap: balance;
}
h2 {
  font-size: clamp(1.5rem, 3.4vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
  font-weight: 700;
  text-wrap: balance;
}
.dek { font-size: 1.25rem; line-height: 1.5; font-style: italic; color: var(--muted); }
.byline, .meta { font-size: 0.875rem; color: var(--muted); font-variant-numeric: tabular-nums; }
p strong { font-weight: 600; }

figure { display: grid; gap: 0.5rem; }
figure img { display: block; width: 100%; border-radius: 6px; background: var(--wash); }
figcaption { font-size: 0.8125rem; color: var(--muted); }
.page > figure.hero { margin-block: 0.5rem; }

/* The reveal: the heading sits on the empty wall of the photograph, or under it on a phone. */
.banner { position: relative; margin-block: 1.5rem 0.25rem; }
.banner img { display: block; width: 100%; border-radius: 6px; background: var(--wash); }
.banner h2 {
  position: absolute;
  left: 5%;
  top: 50%;
  transform: translateY(-50%);
  width: 42%;
  margin: 0;
  color: var(--on-photo);
  font-size: clamp(1.5rem, 3.3vw, 2.5rem);
}
@media (max-width: 640px) {
  .banner { display: grid; gap: 1rem; }
  .banner h2 { position: static; transform: none; width: auto; color: var(--ink); }
}

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 6px; }
table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; line-height: 1.45; }
th, td { text-align: left; vertical-align: top; padding: 0.7rem 0.9rem; border-bottom: 1px solid var(--line); }
thead th {
  background: var(--wash);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
tbody tr:last-child td { border-bottom: 0; }
td:last-child { font-weight: 600; color: var(--accent); white-space: nowrap; }

.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.pair figure { min-width: 0; margin: 0; }
@media (max-width: 720px) { .pair { grid-template-columns: 1fr; } }

.next { background: var(--soft); border-radius: 8px; padding: 1.25rem 1.4rem; }
.next p { margin: 0; }
.next p + p { margin-top: 0.75rem; }

.notes {
  border-top: 1px solid var(--line);
  padding-top: 1.25rem;
  margin-top: 1.5rem;
  font-size: 0.8125rem;
  color: var(--muted);
}

/* The index. */
.intro { font-size: 1.25rem; line-height: 1.55; color: var(--muted); }
.post-list { list-style: none; padding: 0; display: grid; gap: 2.5rem; margin-top: 1rem; }
.post-card { display: grid; gap: 0.6rem; }
.post-card a { color: var(--ink); text-decoration: none; }
.post-card a:hover h2, .post-card a:focus-visible h2 { text-decoration: underline; text-underline-offset: 0.15em; }
.post-card img { display: block; width: 100%; border-radius: 6px; background: var(--wash); margin-bottom: 0.4rem; }
.post-card h2 { margin: 0.2rem 0 0; }
.post-card p { margin: 0; }
.post-card .dek { font-size: 1.0625rem; }

.not-found p { color: var(--muted); }