/* ============================================================
   Guide pages — the site-side (paper) identity, tuned for reading.
   Same tokens as everything else; nothing here invents a color.
   ============================================================ */
body.artpage {
  margin: 0;
  font-family: var(--font-app);
  font-size: 1.125rem;               /* 18px — long-form floor */
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  line-height: 1.65;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--paper-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--paper-line) 1px, transparent 1px);
  background-size: 34px 34px;
  -webkit-font-smoothing: antialiased;
}

.arthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  max-width: 46rem;
  margin: 0 auto;
  padding: var(--sp-3) var(--sp-3) 0;
}
.arthead__mark {
  font-family: var(--font-display);
  font-size: var(--text-md);
  letter-spacing: var(--track-tight);
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
}
.arthead__cta {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  background: var(--yellow);
  color: var(--ink);
  border: var(--border-ink);
  border-radius: var(--r-pill);
  padding: 0.4em 1em;
  text-decoration: none;
  white-space: nowrap;
}

.article {
  max-width: 43rem;
  margin: 0 auto;
  padding: var(--sp-4) var(--sp-3) var(--sp-5);
}
.article h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 2.9rem);
  line-height: 1.05;
  letter-spacing: var(--track-tight);
  text-transform: uppercase;
  margin: var(--sp-3) 0;
  text-wrap: balance;
}
.article h2 {
  font-family: var(--font-display);
  font-size: 1.45rem;
  letter-spacing: var(--track-tight);
  text-transform: uppercase;
  margin: var(--sp-4) 0 var(--sp-2);
}
.article p { margin: 0 0 1em; }
.article a { color: var(--ink); text-decoration-thickness: 2px; }
.article blockquote {
  margin: var(--sp-3) 0;
  padding: var(--sp-2) var(--sp-3);
  border-left: 4px solid var(--ink);
  background: var(--card);
  font-family: var(--font-mono);
  font-size: 0.95em;
}
.article ol, .article ul { margin: 0 0 1em; padding-left: 1.3em; }
.article li { margin-bottom: 0.5em; }

.article table {
  display: block;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: 1em;                  /* same size as body text — tables are content here */
  margin: var(--sp-3) 0;
}
.article th, .article td {
  border: 1px solid var(--ink-soft);
  padding: 0.5em 0.7em;
  text-align: left;
  vertical-align: top;
  min-width: 7em;                  /* scroll sideways, never crush */
}
.article th {
  font-family: var(--font-mono);
  font-size: 0.8em;
  text-transform: uppercase;
  letter-spacing: var(--track-mono);
  background: var(--card);
}

.article figure { margin: var(--sp-4) 0; overflow-x: auto; }
/* natural size + sideways scroll on phones — a 640px drawing scaled
   to 375px turns its labels into 6px dust */
.article figure svg { width: 100%; min-width: 600px; height: auto; display: block; }
.article figcaption {
  font-family: var(--font-mono);
  font-size: 0.8em;
  color: var(--ink-soft);
  margin-top: var(--sp-1);
}

/* video thumbnail cards — real pages in the app */
.vidcards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--sp-2);
  margin: var(--sp-3) 0;
  padding: 0;
  list-style: none;
}
.vidcards a {
  display: block;
  border: var(--border-ink);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--white);
  text-decoration: none;
  color: var(--ink);
}
.vidcards img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}
.vidcards span {
  display: block;
  padding: 0.55em 0.7em;
  font-size: 0.9em;
  font-weight: 700;
  line-height: 1.3;
}

/* phones: long-form reading wants ~18px, and the header can shed width */
@media (max-width: 640px) {
  body.artpage { font-size: 1.1875rem; }   /* 19px */
  .arthead { flex-wrap: wrap; }
}

.artfoot {
  max-width: 43rem;
  margin: 0 auto var(--sp-5);
  padding: 0 var(--sp-3);
}
.artfoot__card {
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--r-lg);
  padding: var(--sp-4);
  text-align: center;
}
.artfoot__card b {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  letter-spacing: var(--track-tight);
  text-transform: uppercase;
  margin-bottom: var(--sp-2);
}
.artfoot__card a {
  display: inline-block;
  background: var(--yellow);
  color: var(--ink);
  border-radius: var(--r-pill);
  padding: 0.6em 1.6em;
  font-weight: 800;
  text-decoration: none;
}
.artfoot__note {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--ink-soft);
  text-align: center;
  margin-top: var(--sp-2);
}

/* "Keep reading" — the curated sibling links that keep every guide
   reachable from inside the graph, not only from the hub */
.related { margin-top: var(--sp-5); }
.related ul {
  list-style: none;
  padding: 0;
  margin: var(--sp-2) 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: var(--sp-2);
}
.related a {
  display: block;
  background: var(--card);
  border: var(--border-ink);
  border-radius: var(--r-md);
  padding: var(--sp-2) var(--sp-3);
  text-decoration: none;
  font-size: 0.9em;
}
.related b { line-height: 1.3; }