:root {
  color-scheme: light;
  --paper: #f7f7f5;
  --ink: #1c1c1b;
  --muted: #615e59;
  --line: #dedbd6;
  --accent: #a8392b;
  font-family: Avenir, "Avenir Next", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
}
* { box-sizing: border-box; }
body { margin: 0; -webkit-font-smoothing: antialiased; }
h1, h2, h3, p { margin: 0; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
[hidden], .symbols { display: none !important; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
section:focus, main:focus { outline: none; }
.wrap { width: min(1040px, calc(100% - 64px)); margin-inline: auto; }
.skip { position: fixed; top: -60px; left: 12px; z-index: 2; background: #fff; padding: 8px; }
.skip:focus { top: 8px; }
.mast { background: #fafaf8; border-bottom: 1px solid var(--line); }
.mast-inner { display: flex; min-height: 70px; align-items: center; gap: 18px; }
.brand { font-size: 24px; font-weight: 500; line-height: 1.2; letter-spacing: .19em; }
.product { border-left: 1px solid var(--line); padding-left: 18px; color: #555550; font-size: 12px; letter-spacing: .07em; text-transform: uppercase; }
.navigation { border-bottom: 1px solid var(--line); }
.navigation .wrap { display: flex; gap: 26px; }
.navigation a { display: flex; min-height: 51px; align-items: center; border-bottom: 2px solid transparent; color: var(--muted); font-size: 15px; }
.navigation a[aria-current] { color: var(--accent); border-bottom-color: currentColor; font-weight: 600; }
.navigation a:hover, .resource:hover strong, .chapters button:hover { text-decoration: underline; text-underline-offset: 3px; }
main { padding-block: 22px 52px; }
.context { margin-bottom: 16px; color: var(--muted); font-size: 13px; line-height: 1.5; }
.context span { padding-inline: 4px; }
.panel { padding: 20px; background: #fff; border: 1px solid var(--line); border-top: 3px solid #d55040; }
.panel h1, .video-title { font-size: 22px; font-weight: 600; line-height: 1.35; letter-spacing: -.025em; }
.panel p { max-width: 74ch; margin-top: 6px; font-size: 16px; line-height: 1.55; }
.panel .note { color: var(--muted); margin-top: 12px; font-size: 14px; }
.list-title, .chapters h3 { font-weight: 600; font-size: 17px; line-height: 1.4; border-bottom: 1px solid var(--ink); padding-bottom: 12px; }
.list-title { margin-top: 28px; }
.resource { display: grid; grid-template-columns: 1fr auto 20px; gap: 16px; align-items: center; min-height: 78px; padding: 12px 3px 12px 0; border-bottom: 1px solid var(--line); }
.resource strong, .resource small { display: block; }
.resource strong { font-size: 17px; line-height: 1.4; font-weight: 500; }
.resource small { font-size: 14px; line-height: 1.5; color: var(--muted); margin-top: 3px; }
.format, time { color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }
.arrow { width: 18px; height: 18px; stroke: var(--muted); fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.video-title { font-size: clamp(23px, 3vw, 32px); }
.video-intro { margin: 5px 0 19px; line-height: 1.5; color: var(--muted); }
.watch-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(265px, 32%); gap: 28px; align-items: start; }
.screen { aspect-ratio: 16/9; position: relative; overflow: hidden; border: 1px solid var(--line); background: #efeeea; }
.screen video { width: 100%; height: 100%; display: block; background: #171716; }
.cover { position: absolute; inset: 0; width: 100%; border: 0; background: linear-gradient(to bottom, transparent 49%, #25241f 59%), #25241f url("./portada-video.webp") center/cover no-repeat; }
.phone-title { display: none; }
.play-label { position: absolute; bottom: 13%; left: 5.3%; display: inline-flex; align-items: center; gap: 9px; min-height: 44px; padding: 9px 16px; background: #a8392b; color: #fff; font-size: 16px; font-weight: 600; }
.play-label svg { width: 15px; height: 15px; fill: currentColor; }
.cover:hover .play-label { background: #933325; }
.cover:focus-visible { outline-offset: -4px; }
.quick-files { display: flex; flex-wrap: wrap; column-gap: 22px; border-bottom: 1px solid var(--line); }
.quick-files a { display: inline-flex; align-items: center; gap: 6px; min-height: 44px; font-size: 14px; }
.quick-files .arrow { width: 15px; height: 15px; }
.quick-files a:hover { text-decoration: underline; text-underline-offset: 3px; }
.chapters ol { padding: 0; margin: 0; list-style: none; }
.chapters li { border-bottom: 1px solid var(--line); }
.chapters button { display: flex; align-items: center; justify-content: space-between; gap: 12px; width: 100%; min-height: 46px; padding: 8px 0; border: 0; background: none; text-align: left; font-size: 15px; line-height: 1.4; }
.chapters button[aria-current] { color: var(--accent); font-weight: 600; }
#mensaje { margin-top: 14px; }
#mensaje a { text-decoration: underline; }
@media (max-width: 700px), (pointer: coarse) and (orientation: landscape) and (max-height: 540px) {
  .wrap { width: calc(100% - 32px); }
  .mast-inner { min-height: 52px; gap: 14px; }
  .brand { font-size: 20px; letter-spacing: .16em; }
  .product { padding-left: 14px; font-size: 11px; }
  .navigation .wrap { gap: 20px; }
  .navigation a { font-size: 15px; min-height: 48px; }
  main { padding-top: 14px; }
  .context { margin-bottom: 7px; font-size: 13px; }
  .panel { padding: 14px; }
  .panel h1 { font-size: 19px; }
  .video-intro { font-size: 15px; margin: 3px 0 12px; }
  .cover { display: flex; flex-direction: column; justify-content: center; align-items: flex-start; gap: 12px; padding: 12px clamp(14px, 4.5vw, 28px); text-align: left; background: #25241f; border-top: 3px solid #c84936; }
  .phone-title { display: block; color: #fafaf8; font-size: clamp(19px, 5vw, 25px); font-weight: 600; line-height: 1.25; }
  .play-label { position: static; min-height: 48px; font-size: 16px; }
  .quick-files { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding-top: 8px; border-bottom: 0; }
  .quick-files a { min-height: 48px; padding: 5px; justify-content: center; text-align: center; background: #fff; border: 1px solid var(--line); font-size: 15px; line-height: 1.3; }
  .quick-files .arrow { flex-shrink: 0; }
  .chapters button { min-height: 50px; padding: 9px 2px; font-size: 16px; }
  .chapters time { flex-shrink: 0; font-size: 14px; }
  .panel p { font-size: 15px; }
  .resource { min-height: 68px; gap: 8px; }
  .resource strong { font-size: 16px; }
  .resource small, .format { font-size: 13px; }
  .watch-grid { grid-template-columns: 1fr; gap: 18px; }
}
@media (pointer: coarse) and (orientation: landscape) and (min-width: 550px) and (max-height: 540px) {
  .mast-inner { min-height: 40px; }
  #guia .context, #guia .video-intro { display: none; }
  .video-title { font-size: 20px; margin-bottom: 8px; }
  .watch-grid { grid-template-columns: min(58%, calc(177.77svh - 260px)) minmax(0, 1fr); gap: 16px; }
  .phone-title { font-size: 19px; }
}
@media (max-width: 380px) {
  .format { display: none; }
  .resource { grid-template-columns: 1fr 20px; }
}