/* Landing page composition; brand and controls come from shared design-system.css. */
html { scroll-behavior: smooth; }
.site-header, main>section, footer { max-width: var(--ds-content-width); margin: auto; }
.site-header { padding: 1.25rem 1.5rem; display: flex; justify-content: space-between; align-items: center; gap: 1.5rem; }
.header-link { min-height: var(--ds-control-height); display: inline-flex; align-items: center; font-weight: 600; }
.hero { padding: 4rem 1.5rem; display: grid; grid-template-columns: minmax(0,1.35fr) minmax(0,.65fr); gap: 3rem; align-items: center; }
.hero h1 { max-width: 760px; font-size: clamp(2.4rem,5vw,4.6rem); line-height: 1.08; }
.lead { max-width: 720px; margin: 1.5rem 0 0; font-size: 1.2rem; }
.actions { gap: .75rem; margin-top: 1.75rem; }
.quiet { max-width: 650px; margin-top: 1.25rem; color: var(--md-text-muted); font-size: max(14px,.9rem); }
.map-preview { padding: 1.5rem; background: var(--md-brand); color: var(--md-text-inverse); border-radius: var(--md-surface-radius); }
.preview-title { margin: 0 0 1rem; font-size: 1.5rem; font-weight: 700; }
.map-preview div { padding: 1rem 0; border-top: 1px solid var(--md-control-border); }
.map-preview span, .map-preview strong { display: block; }
.map-preview span { font-weight: 600; }
.map-preview strong { margin-top: .2rem; color: var(--md-surface-quiet); font-size: 1rem; font-weight: 400; }
.why { padding: 3rem 1.5rem; border-block: 1px solid var(--md-divider); display: grid; grid-template-columns: .8fr 1.2fr; gap: 3rem; }
.why h2, .section-heading h2, .roles h2, .registry h2, .boundaries h2, .final-action h2 { margin: .25rem 0; font-size: clamp(1.8rem,3vw,2.8rem); }
.why>p { margin: 0; font-size: 1.2rem; }
.benefits { padding: 4rem 1.5rem; }
.section-heading { max-width: 780px; }
.benefit-list { margin-top: 2rem; display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 0 3rem; }
.benefit-list article { padding: 1.5rem 0; border-top: 1px solid var(--md-divider); }
.benefit-list span { font-size: var(--ds-text-small); font-weight: 700; color: var(--md-accent); }
.benefit-list h3 { margin: .7rem 0; font-size: 1.35rem; }
.benefit-list p { margin: 0; color: var(--md-text-muted); }
.roles { padding: 3rem; background: var(--md-brand); color: var(--md-text-inverse); border-radius: var(--md-surface-radius); display: grid; grid-template-columns: 1.05fr .95fr; gap: 3rem; }
.roles .eyebrow, .roles-copy>p, .roles dd, .roles .quiet { color: var(--md-surface-quiet); }
.roles a { color: var(--md-text-inverse); }
.roles a:focus-visible { outline-color: var(--md-focus-inverse); }
.roles .secondary { background: transparent; color: var(--md-text-inverse); border-color: var(--md-surface-quiet); }
.roles .secondary:hover { background: var(--md-action); color: var(--md-text-inverse); }
.roles dl { margin: 0; }
.roles dl div { padding: 1rem 0; border-top: 1px solid var(--md-control-border); }
.roles dt { font-weight: 700; font-size: 1.1rem; }
.roles dd { margin: .25rem 0 0; }
.registry { margin-top: 4rem; padding: 3rem 1.5rem; display: grid; grid-template-columns: 1fr 1fr; gap: 2rem 3rem; border-top: 1px solid var(--md-divider); }
.registry>div:first-child p:last-child { color: var(--md-text-muted); }
.registry-points p { margin: 0; padding: 1rem 0; display: grid; grid-template-columns: 100px 1fr; align-items: center; gap: .5rem; border-top: 1px solid var(--md-divider); }
.registry-points strong { font-size: 2.6rem; color: var(--md-accent); }
.registry-note { grid-column: 1 / -1; margin: 0; padding: 1rem; background: var(--md-surface); border-radius: var(--md-control-radius); color: var(--md-text-muted); }
.founder { padding: 4rem 1.5rem; text-align: center; }
.founder blockquote { max-width: 900px; margin: 1.2rem auto; font-size: clamp(2rem,4vw,3.8rem); line-height: 1.15; font-weight: 700; }
.founder>p:last-child { max-width: 760px; margin: 1.5rem auto 0; font-size: 1.15rem; color: var(--md-text-muted); }
.boundaries { padding: 3rem; background: var(--md-surface); border: 1px solid var(--md-divider); border-radius: var(--md-surface-radius); display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
.boundaries ul { margin: 0; padding: 0; list-style: none; }
.boundaries li { padding: 1rem 0 1rem 1.5rem; border-top: 1px solid var(--md-divider); position: relative; }
.boundaries li::before { content: '—'; position: absolute; left: 0; color: var(--md-accent); font-weight: 700; }
.final-action { margin-top: 4rem; margin-bottom: 4rem; padding: 3rem; background: var(--md-surface-quiet); border-radius: var(--md-surface-radius); display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.final-action>div { max-width: 760px; }
footer { padding: 2rem 1.5rem; border-top: 1px solid var(--md-divider); display: flex; justify-content: space-between; flex-wrap: wrap; gap: .5rem; color: var(--md-text-muted); }
@media (max-width: 820px) {
  .hero, .why, .roles, .registry, .boundaries { grid-template-columns: 1fr; gap: 2rem; }
  .hero { padding-top: 2.5rem; }
  .roles, .boundaries, .final-action { padding: 2rem; margin-inline: 1rem; }
  .benefit-list { grid-template-columns: 1fr; }
  .final-action { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 520px) {
  .site-header { align-items: flex-start; flex-wrap: wrap; padding: 1rem; gap: .5rem; }
  .site-header .brand { flex-basis: 100%; }
  .hero, .why, .benefits, .registry, .founder { padding-inline: 1rem; }
  .hero h1 { font-size: 2.4rem; }
  .actions { display: grid; }
  .actions .primary, .actions .secondary { width: 100%; }
  .registry-points p { grid-template-columns: 75px 1fr; }
  .registry-points strong { font-size: 2rem; }
  .roles, .boundaries, .final-action { padding: 1.25rem; }
}