/* Opening presentation: scoped to the intro, preserving the live valley. */
.intro {
  background: radial-gradient(ellipse at 50% 44%, rgba(16,20,24,.56) 0%, rgba(16,20,24,.28) 54%, rgba(9,14,18,.40) 100%),
    linear-gradient(180deg, rgba(9,14,18,.12), rgba(9,14,18,.08) 55%, rgba(9,14,18,.40));
  padding: max(28px, env(safe-area-inset-top)) 24px max(28px, env(safe-area-inset-bottom));
}
.intro > .eyebrow { color: #f4efe6; font-size: clamp(10px, 1.1vw, 12px); letter-spacing: .26em; text-shadow: 0 2px 12px #000; }
.intro .intro-title { font-size: clamp(44px, 10vw, 140px); line-height: .98; letter-spacing: .025em; text-shadow: 0 4px 32px rgba(0,0,0,.48); }
.intro .btn-enter { margin-top: clamp(28px, 5vh, 48px); min-height: 52px; background: #f4efe6; color: #26251f; border-color: #f4efe6; font-weight: 600; backdrop-filter: none; }
.intro .btn-enter:hover { background: #fffaf0; border-color: #fffaf0; }
.intro .intro-note { color: #f4efe6; line-height: 1.6; text-shadow: 0 2px 8px #000; }
.intro .intro-note .link { display: inline-block; padding: 10px 4px; color: #f4efe6; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.intro button:focus-visible { outline: 3px solid #e7a64a; outline-offset: 5px; }
@media (max-width: 480px) {
  .intro .intro-title { font-size: clamp(34px, 10vw, 48px); }
  .intro > .eyebrow { max-width: 28ch; line-height: 1.8; }
  .intro .btn-enter { padding: 16px 26px; letter-spacing: .18em; }
}
@media (max-height: 500px) and (orientation: landscape) {
  .intro .intro-title { font-size: clamp(32px, 12vh, 60px); }
  .intro .btn-enter { margin-top: 18px; min-height: 44px; padding: 12px 26px; }
  .intro .intro-note { margin: 4px 0 0; }
}
@media (prefers-reduced-motion: reduce) {
  .intro .fade-up { animation: none; opacity: 1; transform: none; }
  .intro, .intro .btn-enter { transition: none; }
}