/* Brain Health — woman-first midlife editorial guide */

.brain-page {
  --brain-ink: #263632;
  --brain-muted: #68736d;
  --brain-paper: #f8f8f3;
  --brain-sand: #eeeae0;
  --brain-sage: #dfe8df;
  --brain-mist: #cbd8cd;
  --brain-line: #c9d1c8;
  --brain-moss: #4f7064;
  --brain-clay: #a66e5b;
  --brain-gold: #b69d68;
}

.brain-page main { overflow: hidden; }
.brain-page main p { color: var(--brain-muted); }
.brain-page main a { color: var(--brain-moss); }
.brain-page main a:hover { color: var(--color-accent-dark); }
.brain-page main a:focus-visible {
  outline: 2px solid var(--brain-clay);
  outline-offset: 4px;
}

.brain-hero {
  padding: clamp(128px, 15vw, 190px) 0 clamp(72px, 10vw, 126px);
  background:
    radial-gradient(circle at 86% 15%, rgba(203, 216, 205, 0.85), transparent 34%),
    var(--brain-paper);
}

.brain-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(220px, 0.65fr);
  gap: clamp(48px, 9vw, 132px);
  align-items: end;
}

.brain-hero-copy { max-width: 780px; }
.brain-kicker, .brain-label, .brain-hero-aside-label {
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brain-moss) !important;
}

.brain-kicker { margin-bottom: 1.25rem; }
.brain-hero h1 {
  max-width: 13ch;
  color: var(--brain-ink);
  font-size: clamp(3rem, 6.7vw, 6.15rem);
  line-height: 0.99;
  letter-spacing: -0.035em;
}

.brain-hero-lead {
  max-width: 650px;
  margin-top: 2rem;
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  line-height: 1.8;
}

.brain-hero-note {
  max-width: 510px;
  margin-top: 1.6rem;
  padding-top: 1rem;
  border-top: 1px solid var(--brain-line);
  font-size: 0.9rem;
  font-style: italic;
}

.brain-hero-aside {
  padding: 1.25rem 0 0 1.5rem;
  border-left: 1px solid var(--brain-line);
}

.brain-hero-aside-label { display: block; margin-bottom: 1rem; }
.brain-hero-aside ol { list-style: none; counter-reset: brain-guide; }
.brain-hero-aside li {
  counter-increment: brain-guide;
  border-top: 1px solid var(--brain-line);
}
.brain-hero-aside li::before {
  content: counter(brain-guide, decimal-leading-zero);
  display: inline-block;
  width: 2.2rem;
  color: var(--brain-clay);
  font-family: var(--font-serif);
  font-size: 0.9rem;
}
.brain-hero-aside a {
  display: inline-block;
  padding: 0.72rem 0;
  color: var(--brain-ink) !important;
  font-size: 0.9rem;
}
.brain-hero-aside a:hover { color: var(--brain-moss) !important; }

.brain-section { padding: clamp(70px, 10vw, 130px) 0; }
.brain-section--paper { background: var(--brain-paper); }
.brain-section--sand { background: var(--brain-sand); }
.brain-section--sage { background: var(--brain-sage); }
.brain-section--ink { background: var(--brain-ink); }

.brain-reading-grid, .brain-closer-look {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.25fr);
  gap: clamp(40px, 10vw, 150px);
  align-items: start;
}

.brain-section-intro h2, .brain-closer-look h2, .brain-section-heading h2,
.brain-evidence-heading h2, .brain-research-inner h2 {
  max-width: 15ch;
  margin-top: 0.65rem;
  color: var(--brain-ink);
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
}

.brain-prose { max-width: 670px; }
.brain-prose p, .brain-closer-content > p {
  margin-bottom: 1.3rem;
  font-size: 1rem;
  line-height: 1.85;
}
.brain-prose p:last-child, .brain-closer-content > p:last-child { margin-bottom: 0; }
.brain-pullquote {
  margin-top: 2.2rem;
  padding: 1.3rem 0 0 1.25rem;
  border-top: 1px solid var(--brain-line);
  border-left: 2px solid var(--brain-clay);
  color: var(--brain-ink) !important;
  font-family: var(--font-serif);
  font-size: 1.35rem !important;
  line-height: 1.45 !important;
}

.brain-section-heading { max-width: 700px; margin-bottom: 3rem; }
.brain-section-heading > p:last-child, .brain-evidence-heading > p:last-child {
  max-width: 660px;
  margin-top: 1.2rem;
  line-height: 1.8;
}
.brain-section-heading--narrow { max-width: 680px; }

.brain-interactions, .brain-pattern-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--brain-line);
}
.brain-interaction, .brain-pattern {
  display: grid;
  grid-template-columns: 2.8rem minmax(0, 1fr);
  gap: 0.8rem;
  padding: 1.6rem 1.2rem 1.7rem 0;
  border-bottom: 1px solid var(--brain-line);
}
.brain-interaction:nth-child(odd), .brain-pattern:nth-child(odd) {
  border-right: 1px solid var(--brain-line);
  padding-right: 2rem;
}
.brain-interaction:nth-child(even), .brain-pattern:nth-child(even) { padding-left: 2rem; }
.brain-interaction--wide, .brain-pattern--wide { grid-column: 1 / -1; }
.brain-interaction--wide { grid-template-columns: 2.8rem minmax(0, 0.9fr); }
.brain-interaction-mark, .brain-pattern-number {
  color: var(--brain-clay);
  font-family: var(--font-serif);
  font-size: 1.25rem;
}
.brain-interaction h3, .brain-pattern h3, .brain-attention-row h3 {
  margin-bottom: 0.45rem;
  color: var(--brain-ink);
  font-size: 1.25rem;
}
.brain-interaction p, .brain-pattern p { font-size: 0.9rem; line-height: 1.7; }

.brain-evidence-heading h2 { color: var(--brain-paper); }
.brain-label--light { color: var(--brain-mist) !important; }
.brain-evidence-heading > p:last-child { color: rgba(248, 248, 243, 0.7) !important; }
.brain-evidence-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 3.3rem;
  background: rgba(203, 216, 205, 0.35);
}
.brain-evidence-group {
  min-width: 0;
  padding: 1.7rem 1.6rem 1.8rem;
  background: var(--brain-ink);
}
.brain-evidence-status {
  margin-bottom: 1.7rem;
  font-family: var(--font-sans);
  font-size: 0.68rem !important;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.brain-evidence-status--established { color: #c9d8ba !important; }
.brain-evidence-status--emerging { color: #d9c58f !important; }
.brain-evidence-status--unknown { color: #dfb4a1 !important; }
.brain-evidence-group h3 { margin-bottom: 0.8rem; color: var(--brain-paper); font-size: 1.45rem; line-height: 1.2; }
.brain-evidence-group > p:last-child { color: rgba(248, 248, 243, 0.7) !important; font-size: 0.9rem; line-height: 1.75; }

.brain-reading-grid--attention { align-items: center; }
.brain-attention-list { border-top: 1px solid var(--brain-line); }
.brain-attention-row {
  display: grid;
  grid-template-columns: minmax(145px, 0.55fr) minmax(0, 1fr);
  gap: 1.5rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--brain-line);
}
.brain-attention-row h3 { margin: 0; font-size: 1.1rem; }
.brain-attention-row p { font-size: 0.9rem; line-height: 1.7; }

.brain-closer-look { align-items: center; }
.brain-closer-content {
  padding: clamp(1.5rem, 4vw, 3rem);
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid var(--brain-line);
  border-left: 3px solid var(--brain-clay);
}
.brain-look-list {
  margin: 1.5rem 0 1.6rem;
  padding-left: 1.2rem;
  color: var(--brain-muted);
}
.brain-look-list li { padding: 0.35rem 0 0.35rem 0.3rem; font-size: 0.92rem; line-height: 1.7; }
.brain-look-list strong { color: var(--brain-ink); font-weight: 600; }

.brain-research-bridge {
  padding: clamp(70px, 9vw, 112px) 0;
  background: var(--brain-mist);
}
.brain-research-inner { max-width: 720px; }
.brain-research-inner h2 { max-width: 18ch; }
.brain-research-inner > p:last-child { max-width: 650px; margin-top: 1.25rem; line-height: 1.8; }
.brain-research-inner a { border-bottom: 1px solid currentColor; }

.brain-section, .brain-research-bridge { scroll-margin-top: 88px; }

@media (max-width: 760px) {
  .brain-hero { padding-top: 104px; }
  .brain-hero-inner, .brain-reading-grid, .brain-closer-look {
    grid-template-columns: 1fr;
    gap: 42px;
  }
  .brain-hero h1 { max-width: 11ch; font-size: clamp(3rem, 14vw, 5rem); }
  .brain-hero-lead { margin-top: 1.5rem; }
  .brain-hero-aside { padding: 1.25rem 0 0; border-top: 1px solid var(--brain-line); border-left: 0; }
  .brain-section-intro h2, .brain-closer-look h2, .brain-section-heading h2,
  .brain-evidence-heading h2, .brain-research-inner h2 { max-width: 18ch; }
  .brain-interactions, .brain-pattern-list, .brain-evidence-groups { grid-template-columns: 1fr; }
  .brain-interaction:nth-child(odd), .brain-pattern:nth-child(odd) { border-right: 0; padding-right: 0; }
  .brain-interaction:nth-child(even), .brain-pattern:nth-child(even) { padding-left: 0; }
  .brain-interaction, .brain-pattern { padding: 1.35rem 0; }
  .brain-interaction--wide, .brain-pattern--wide { grid-column: auto; }
  .brain-interaction--wide { grid-template-columns: 2.8rem minmax(0, 1fr); }
  .brain-evidence-groups { gap: 1px; }
  .brain-attention-row { grid-template-columns: 1fr; gap: 0.35rem; }
}

@media (max-width: 375px) {
  .brain-hero h1 { font-size: 2.85rem; }
  .brain-section { padding: 62px 0; }
  .brain-hero-aside a { font-size: 0.84rem; }
  .brain-closer-content { padding: 1.25rem; }
}