.brain-game-page { background: #f8faf9; color: #1c3029; }
.brain-game-page *, .brain-game-page *::before, .brain-game-page *::after { box-sizing: border-box; }
.brain-hero { padding: 48px 24px 64px; background: linear-gradient(125deg, #eef7f0, #f7f9fc); }
.brain-hero__inner { max-width: 1180px; margin: auto; display: grid; grid-template-columns: 1.15fr 1fr; align-items: center; gap: 48px; }
.brain-breadcrumb { font-size: .85rem; margin-bottom: 32px; }
.brain-breadcrumb a { color: #35604b; }
.brain-hero h1 { margin: 12px 0 24px; font-size: clamp(2.5rem, 4.6vw, 4.4rem); line-height: 1.06; letter-spacing: -.045em; }
.brain-game-page .poster-hero__eyebrow { color: #35604b; }
.brain-game-page .poster-hero__lede { color: #42574e; font-size: 1.12rem; line-height: 1.75; }
.brain-game-page .poster-hero__primary { background: #265840; color: white; }
.brain-hero__visual { margin: 0; padding: 14px; background: white; border: 1px solid #dce7df; border-radius: 20px; }
.brain-hero__visual img { display: block; width: 100%; height: auto; border-radius: 12px; }
.brain-hero__visual figcaption { padding: 14px 4px 4px; font-size: .85rem; color: #42574e; line-height: 1.5; }
.brain-content { padding: 12px 24px 64px; }
.brain-section { padding: 40px 0; border-bottom: 1px solid #dce7df; scroll-margin-top: 24px; }
.brain-game-page:is(.site-affiliate-tag-visible, .ios-app-banner-visible) #choose-puzzle { scroll-margin-top: 108px; }
.brain-section h2 { font-size: clamp(1.6rem, 2.5vw, 2.2rem); line-height: 1.2; margin: 0 0 24px; letter-spacing: -.025em; }
.brain-section p, .brain-section li { line-height: 1.8; color: #42574e; }
.brain-choice-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.brain-choice { display: flex; flex-direction: column; background: white; border: 1px solid #dce7df; border-radius: 16px; padding: 24px; }
.brain-choice h3 { margin: 0; font-size: 1.25rem; }
.brain-choice h3 a { color: #265840; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.brain-choice p { flex: 1; }
.brain-choice__link { color: #265840; font-weight: 700; padding: 10px 0; align-self: flex-start; }
.brain-editorial { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 48px; }
.brain-editorial p { margin-top: 0; }
.brain-editorial ol { padding-left: 22px; }
.brain-editorial li { padding: 4px 0 4px 6px; }
.brain-table-wrap { max-width: 100%; overflow-x: auto; border: 1px solid #dce7df; border-radius: 16px; background: white; }
.brain-table { width: 100%; border-collapse: collapse; font-size: .98rem; line-height: 1.6; }
.brain-table caption { padding: 16px; text-align: left; color: #42574e; font-size: .85rem; }
.brain-table th, .brain-table td { padding: 18px; text-align: left; vertical-align: top; border-top: 1px solid #dce7df; }
.brain-table thead { background: #edf5ef; }
.brain-table tbody th { width: 24%; color: #265840; }
.brain-table td { color: #42574e; }
.brain-faq { display: grid; gap: 16px; }
.brain-faq h3 { margin-bottom: 8px; font-size: 1.1rem; }
.brain-faq p { margin-top: 0; }
.brain-related, .brain-footer nav { display: flex; flex-wrap: wrap; gap: 12px; }
.brain-related a { color: #265840; padding: 12px 16px; border: 1px solid #dce7df; border-radius: 10px; background: white; }
.brain-footer { max-width: 1180px; margin: auto; padding: 12px 24px 48px; font-size: .9rem; line-height: 1.8; }
.brain-footer a { color: #35604b; }
.brain-game-page a:focus-visible, .brain-table-wrap:focus-visible { outline: 3px solid #155eef; outline-offset: 4px; }
.brain-skip-link { position: absolute; top: -80px; left: 16px; z-index: 10000; padding: 12px; background: white; color: #265840; }
.brain-skip-link:focus { top: 12px; }
@media (max-width: 800px) {
  .brain-hero__inner, .brain-editorial { grid-template-columns: 1fr; gap: 24px; }
  .brain-hero { padding: 32px 20px; }
  .brain-hero__visual { max-width: 520px; }
  .brain-content { padding-inline: 20px; }
  .brain-section { padding: 32px 0; }
  .brain-game-page .seo-header { flex-wrap: wrap; gap: 16px; }
  .brain-game-page .seo-nav { flex-wrap: wrap; gap: 12px; }
}
@media (max-width: 720px) {
  .brain-game-page:is(.site-affiliate-tag-visible, .ios-app-banner-visible) #choose-puzzle { scroll-margin-top: 180px; }
}
@media (max-width: 520px) {
  .brain-choice-grid { grid-template-columns: 1fr; }
  .brain-hero h1 { font-size: 2.5rem; }
  .brain-table th, .brain-table td { padding: 12px; font-size: .85rem; }
  .brain-table tbody th { width: 26%; }
  .brain-game-page .poster-hero__actions { align-items: stretch; }
}