.lg-intro {
  padding: clamp(7.5rem, 14vh, 10rem) var(--pad) clamp(3rem, 6vh, 4.5rem);
}
.lg-intro h1 {
  font-size: clamp(2.3rem, 5vw, 3.6rem);
  letter-spacing: -0.02em;
  line-height: 1.06;
}
.lg-intro h1 em {
  font-style: normal;
  color: var(--accent);
}

.lg-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.75rem;
  margin-top: 1.5rem;
  font-size: 0.78rem;
  color: var(--text-3);
  letter-spacing: 0.02em;
}

/* ---------- layout: sticky index + document ---------- */
.lg-layout {
  position: relative;
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  padding: clamp(2.5rem, 5vh, 3.75rem) var(--pad) clamp(4.5rem, 9vh, 7rem);
  border-top: 1px solid var(--line);
}
.lg-layout::before {
  content: "+";
  position: absolute;
  top: -0.72em;
  left: -0.48em;
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--text-3);
  background: var(--ink-0);
  line-height: 1;
  padding: 2px;
}

/* ---------- contents rail ---------- */
.lg-toc {
  position: sticky;
  top: 5.5rem;
  align-self: start;
}
.lg-toc h2 {
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-3);
  margin-bottom: 1rem;
}
.lg-toc a {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.3rem 0;
  font-size: 0.85rem;
  color: var(--text-2);
  transition: color 0.15s;
}
.lg-toc a:hover { color: var(--accent); }
.lg-toc a .mono {
  font-size: 0.7rem;
  color: var(--text-3);
}
.lg-toc a:hover .mono { color: var(--accent-dim); }

/* ---------- document ---------- */
.lg-doc section {
  padding: clamp(1.9rem, 4vh, 2.6rem) 0;
  border-top: 1px solid var(--line);
}
.lg-doc section:first-child { border-top: none; padding-top: 0; }

.lg-doc h2 {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.9rem;
}
.lg-doc h2 .mono {
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--accent-dim);
  letter-spacing: 0.08em;
}

.lg-doc h3 {
  font-size: 0.95rem;
  margin: 1.5rem 0 0.5rem;
  color: var(--text);
}

.lg-doc p {
  max-width: 44rem;
  font-size: 0.95rem;
  color: var(--text-2);
}
.lg-doc p + p { margin-top: 0.8rem; }

.lg-doc a {
  color: var(--accent-dim);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.lg-doc a:hover { color: var(--accent); }

.lg-doc ul {
  list-style: none;
  max-width: 44rem;
  margin: 0.8rem 0 0;
  padding: 0;
}
.lg-doc li {
  position: relative;
  padding: 0.22rem 0 0.22rem 1.4rem;
  font-size: 0.95rem;
  color: var(--text-2);
}
.lg-doc li::before {
  content: "+";
  position: absolute;
  left: 0;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent-dim);
}

/* ---------- protected email (click to reveal) ---------- */
.email-protect {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  font-size: 0.95rem;
  color: var(--lime-dim);
  text-decoration: underline;
  text-decoration-style: dashed;
  text-underline-offset: 3px;
  cursor: pointer;
}
.email-protect:hover,
.email-protect:focus-visible { color: var(--lime); }
.email-protect .mono { font-size: 0.7rem; color: var(--text-3); }

.email-revealed {
  color: var(--lime-dim);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.email-revealed:hover { color: var(--lime); }

/* ---------- cross-links between documents ---------- */
.lg-related {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.75rem;
  margin-top: 1.75rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
  color: var(--text-3);
}
.lg-related a {
  color: var(--text-2);
  transition: color 0.15s;
}
.lg-related a:hover { color: var(--accent); }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .lg-layout { grid-template-columns: 1fr; }
  .lg-toc { position: static; border-bottom: 1px solid var(--line); padding-bottom: 1.5rem; }
}