*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--surface); color: var(--ink);
  font-family: var(--font-sans); font-size: var(--fs-body); line-height: 1.65;
  font-optical-sizing: auto; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
body.menu-open { overflow: hidden; }
img, svg { max-width: 100%; display: block; }
h1, h2, h3, h4, p, ul, ol, figure, dl, dd { margin: 0; padding: 0; }
ul, ol { list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration-color: var(--line-strong); text-underline-offset: .2em; }
a:hover { color: var(--accent-strong); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; border-radius: 2px; }

.wrap { width: min(100% - 2 * var(--page-x), var(--content-max)); margin-inline: auto; }
.grid-12 { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--grid-gap); }
.section { padding-block: var(--section-y); }
.section--alt { background: var(--surface-alt); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.ld-display-xl { font-size: var(--fs-display-xl); line-height: .98; font-weight: 600; letter-spacing: -.035em; text-wrap: balance; }
.ld-display-lg { font-size: var(--fs-display-lg); line-height: 1.04; font-weight: 600; letter-spacing: -.03em; text-wrap: balance; }
.ld-display-md { font-size: var(--fs-display-md); line-height: 1.1; font-weight: 600; letter-spacing: -.02em; text-wrap: balance; }
.hl { font-style: italic; font-weight: 400; color: var(--brand); }
.ld-title { font-size: var(--fs-title); line-height: 1.3; font-weight: 600; letter-spacing: -.01em; }
.ld-lead { font-size: var(--fs-lead); line-height: 1.55; color: var(--ink-muted); max-width: 38rem; }
.ld-body-sm { font-size: var(--fs-body-sm); line-height: 1.6; color: var(--ink-muted); }
.ld-eyebrow { display: inline-flex; align-items: center; gap: 12px; font-size: var(--fs-eyebrow); font-weight: 600; line-height: 1.4; letter-spacing: .22em; text-transform: uppercase; color: var(--accent); }
.ld-eyebrow::before { content: ""; width: 24px; height: 1px; background: currentColor; }
.prose p + p { margin-top: 1em; }
.prose { max-width: 38rem; }

.skip-link { position: absolute; left: var(--space-4); top: -60px; z-index: 100; background: var(--accent); color: var(--on-accent); padding: 10px 18px; border-radius: var(--radius-pill); font-weight: 600; text-decoration: none; }
.skip-link:focus { top: var(--space-4); color: var(--on-accent); }

/* Revelado */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: 80ms; } .reveal-delay-2 { transition-delay: 160ms; } .reveal-delay-3 { transition-delay: 240ms; }
.no-js .reveal { opacity: 1; transform: none; }

/* Cambio de tema */
.theme-switching, .theme-switching *, .theme-switching *::before, .theme-switching *::after {
  transition: background-color 300ms, color 300ms, border-color 300ms, fill 300ms, stroke 300ms !important;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}