/* ZERVO document pages. Depends on brand.css for every token.
   One column, generous measure, no ornament: these are read, not browsed. */

*, *::before, *::after { box-sizing: border-box; }
:root { color-scheme: light; }
[hidden] { display: none !important; }
html { overflow-x: clip; }

body.zd {
  margin: 0;
  background: var(--z-ground);
  color: var(--z-ink);
  font-family: var(--z-font-text);
  font-size: 17px;
  line-height: 1.75;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
}

.zd-wrap {
  width: 100%;
  max-width: 820px;
  padding-inline: var(--z-gap);
  margin-inline: auto;
}

.zd-logo {
  font-family: var(--z-font-display);
  font-weight: 900;
  letter-spacing: .34em;
  font-size: 15px;
  color: var(--z-ink);
  text-decoration: none;
}

.zd-top {
  padding: 22px var(--z-gap);
  background: var(--z-surface);
  border-bottom: 1px solid var(--z-line);
}

.zd-main { padding: clamp(34px, 6vw, 66px) 0 clamp(50px, 8vw, 90px); }

.zd-h1 {
  font-family: var(--z-font-display);
  font-weight: 900;
  font-size: clamp(28px, 4.4vw, 44px);
  line-height: 1.08;
  letter-spacing: -.02em;
  margin: 0 0 10px;
}
.zd-updated {
  margin: 0 0 clamp(26px, 4vw, 40px);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--z-line);
  font-size: 14px;
  color: var(--z-ink-faint);
}

.zd-body h2 {
  font-family: var(--z-font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.2vw, 24px);
  line-height: 1.3;
  letter-spacing: -.01em;
  margin: 38px 0 12px;
}
.zd-body h2:first-child { margin-top: 0; }
.zd-body p { margin: 0 0 12px; color: var(--z-ink-soft); }
.zd-body ul { margin: 0 0 16px; padding: 0; list-style: none; }
.zd-body li {
  padding: 9px 0;
  border-top: 1px solid var(--z-line);
  color: var(--z-ink-soft);
}
.zd-body li:first-child { border-top: 0; }
.zd-body a { color: var(--z-ink); }

.zd-foot {
  padding: 30px 0 40px;
  border-top: 1px solid var(--z-line);
  background: var(--z-surface);
}
.zd-foot .zd-wrap {
  display: flex; justify-content: space-between; align-items: center;
  gap: 16px; flex-wrap: wrap;
}
.zd-foot nav { display: flex; gap: 16px; flex-wrap: wrap; }
.zd-foot a { color: var(--z-ink-soft); text-decoration: none; font-size: 14px; }
.zd-foot a:hover { color: var(--z-ink); text-decoration: underline; }

@media (max-width: 600px) {
  .zd-foot .zd-wrap { justify-content: flex-start; }
}