/* ============================================================
   Mosaic — Portal de Accesibilidad Digital
   Hoja de estilos única (sin CDN). Estilo: neo-brutalismo.
   Piezas con borde negro grueso, sombra dura desplazada,
   pigmentos planos sobre crema. Todo escala con rem para que
   el ajuste de tamaño de letra funcione en toda la interfaz.
   ============================================================ */

@font-face {
  font-family: "Lexend";
  font-style: normal;
  font-weight: 400 900;
  font-display: swap;
  src: url("fonts/Lexend-latin.woff2") format("woff2");
}

:root {
  --paper: #fff8e8;
  --card: #fffdf6;
  --ink: #111111;
  --ink-2: #3f3a30;
  --yellow: #ffd23f;
  --pink: #ff8fb1;
  --mint: #9bf0c8;
  --sky: #8ed3ff;
  --line: 3px;
  --shadow: 5px 5px 0 var(--ink);
  --shadow-lg: 8px 8px 0 var(--ink);
  --radius: 12px;
  --radius-sm: 8px;
  --focus: var(--sky);
  --font: "Lexend", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --wall: 1200px;
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --lift: transform 180ms var(--ease-out), box-shadow 180ms var(--ease-out);
}

/* --------------------------- Escala de texto --------------------------- */
html { font-size: 100%; }
html[data-font-scale="sm"] { font-size: 87.5%; }
html[data-font-scale="lg"] { font-size: 118%; }
html[data-font-scale="xxl"] { font-size: 140%; }

/* ------------------------------- Base ---------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100dvh;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.55;
  font-weight: 500;
  overflow-x: hidden;
  padding-bottom: 5.5rem; /* espacio para la barra inferior en móvil */
}
@media (min-width: 900px) { body { padding-bottom: 0; } }

::selection { background: var(--yellow); color: var(--ink); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 4px; }
html { scrollbar-color: var(--ink) var(--paper); }
::-webkit-scrollbar { width: 14px; }
::-webkit-scrollbar-track { background: var(--paper); border-left: var(--line) solid var(--ink); }
::-webkit-scrollbar-thumb { background: var(--ink); border: 3px solid var(--paper); border-radius: 8px; }

h1, h2, h3, h4 { margin: 0; line-height: 1.1; letter-spacing: -0.02em; text-wrap: balance; }
h1 { font-size: clamp(2.75rem, 7vw, 5.25rem); font-weight: 800; }
h2 { font-size: clamp(1.75rem, 3.2vw, 2.5rem); font-weight: 800; }
h3 { font-size: 1.375rem; font-weight: 800; }
h4 { font-size: 1.125rem; font-weight: 700; }
p { margin: 0; }
p + p { margin-top: 0.75rem; }
a { color: inherit; text-decoration-thickness: 3px; text-underline-offset: 3px; }
strong { font-weight: 800; }
ul { margin: 0; padding-left: 1.4rem; }
li + li { margin-top: 0.35rem; }
img, svg { max-width: 100%; display: block; }
button { font: inherit; color: inherit; }
.muted { color: var(--ink-2); }
.measure { max-width: 68ch; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* ----------------------------- Iconos ---------------------------------- */
.ic { width: 1.5em; height: 1.5em; flex: none; fill: none; stroke: currentColor; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.ic--sm { width: 1.15em; height: 1.15em; }
.ibox {
  display: inline-flex; align-items: center; justify-content: center;
  width: 3.25rem; height: 3.25rem; flex: none;
  border: var(--line) solid var(--ink); border-radius: var(--radius-sm);
  background: var(--card);
}
.ibox--yellow { background: var(--yellow); }
.ibox--pink { background: var(--pink); }
.ibox--mint { background: var(--mint); }
.ibox--sky { background: var(--sky); }
.ibox--ink { background: var(--ink); color: var(--paper); }

/* ------------------------------ Piezas --------------------------------- */
.piece {
  background: var(--card);
  border: var(--line) solid var(--ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
}
.piece--yellow { background: var(--yellow); }
.piece--pink { background: var(--pink); }
.piece--mint { background: var(--mint); }
.piece--sky { background: var(--sky); }
.piece--ink { background: var(--ink); color: var(--paper); }
.piece--flat { box-shadow: none; }
.piece--lg { padding: clamp(1.25rem, 3vw, 2rem); }
.piece--tight { padding: 0.875rem 1rem; }

.tag {
  display: inline-flex; align-items: center; gap: 0.35em;
  padding: 0.2em 0.7em;
  border: var(--line) solid var(--ink); border-radius: 999px;
  background: var(--card);
  font-size: 0.75rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase;
  line-height: 1.4; white-space: nowrap;
}
.tag--yellow { background: var(--yellow); }
.tag--pink { background: var(--pink); }
.tag--mint { background: var(--mint); }
.tag--sky { background: var(--sky); }
.tag--ink { background: var(--ink); color: var(--paper); }
.tag--proper { text-transform: none; letter-spacing: 0; font-size: 0.85rem; }
.tag--demo { background: var(--ink); color: var(--paper); }

/* ------------------------------ Botones -------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.55em;
  min-height: 3rem; padding: 0.6em 1.15em;
  border: var(--line) solid var(--ink); border-radius: var(--radius-sm);
  background: var(--card); color: var(--ink);
  font-weight: 800; line-height: 1.2; text-decoration: none; cursor: pointer;
  box-shadow: var(--shadow);
  transition: var(--lift);
  text-align: center;
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 var(--ink); }
.btn:active, .btn.is-pressed { transform: translate(5px, 5px); box-shadow: 0 0 0 var(--ink); transition-duration: 0ms; }
.btn--yellow { background: var(--yellow); }
.btn--pink { background: var(--pink); }
.btn--mint { background: var(--mint); }
.btn--sky { background: var(--sky); }
.btn--ink { background: var(--ink); color: var(--paper); }
.btn--ink .ic { stroke: currentColor; }
.btn--flat { box-shadow: none; }
.btn--flat:hover { transform: none; box-shadow: none; background: var(--yellow); }
.btn--flat:active { transform: translate(2px, 2px); transition-duration: 0ms; }
.btn--block { width: 100%; }
.btn--lg { min-height: 3.75rem; font-size: 1.125rem; padding: 0.7em 1.4em; }
.btn--sq { width: 3rem; height: 3rem; min-height: 0; padding: 0; }
.btn--sq.btn--lg { width: 4.25rem; height: 4.25rem; }
.btn[aria-pressed="true"], .btn[aria-checked="true"], .btn[aria-current="true"], .btn.is-on {
  background: var(--ink); color: var(--paper);
}
.btn[disabled] { opacity: 0.55; cursor: not-allowed; box-shadow: none; transform: none; }

/* Grupo de botones pegados (A- / A / A+, velocidades) */
.seg { display: inline-flex; flex-wrap: wrap; border: var(--line) solid var(--ink); border-radius: var(--radius-sm); overflow: hidden; box-shadow: var(--shadow); background: var(--card); }
.seg > button {
  min-width: 3rem; min-height: 3rem; padding: 0.4em 0.9em;
  border: 0; border-right: var(--line) solid var(--ink); background: transparent; color: var(--ink);
  font-weight: 800; cursor: pointer;
}
.seg > button:last-child { border-right: 0; }
.seg--full { display: flex; width: 100%; }
.seg--full > button { flex: 1 1 auto; }
.seg > button:hover { background: var(--yellow); }
.seg > button[aria-current="true"], .seg > button[aria-checked="true"] { background: var(--ink); color: var(--paper); }
.seg > button:focus-visible { outline-offset: -4px; }

/* --------------------------- Formularios ------------------------------- */
.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field > label, legend { font-weight: 800; }
.input, select.input, textarea.input {
  width: 100%; min-height: 3.25rem; padding: 0.7em 0.9em;
  border: var(--line) solid var(--ink); border-radius: var(--radius-sm);
  background: var(--card); color: var(--ink); font: inherit; font-weight: 500;
  box-shadow: inset 4px 4px 0 rgba(17, 17, 17, 0.08);
  caret-color: var(--ink);
}
.input::placeholder { color: var(--ink-2); opacity: 1; }
.input:focus-visible { outline-offset: 0; box-shadow: var(--shadow); }
.input[aria-invalid="true"] { background: #ffe1ea; border-color: #b3003b; }
textarea.input { resize: vertical; min-height: 8rem; }
select.input {
  appearance: none; -webkit-appearance: none; padding-right: 3rem; cursor: pointer;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23111' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><path d='M6 9l6 6 6-6'/></svg>");
  background-repeat: no-repeat; background-position: right 0.9rem center; background-size: 1.25rem;
}
fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
legend { padding: 0; margin-bottom: 0.6rem; }
.error { display: none; padding: 0.75rem 1rem; border: var(--line) solid #b3003b; border-radius: var(--radius-sm); background: #ffe1ea; font-weight: 700; }
.error.is-visible { display: block; }

/* Opción tipo tarjeta (radio) */
.choice {
  position: relative;
  display: flex; align-items: center; gap: 0.9rem; cursor: pointer;
  padding: 0.9rem 1rem;
  border: var(--line) solid var(--ink); border-radius: var(--radius-sm);
  background: var(--card); box-shadow: var(--shadow);
  transition: var(--lift);
}
.choice:hover { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 var(--ink); }
.choice input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.choice .dot { width: 1.5rem; height: 1.5rem; flex: none; border: var(--line) solid var(--ink); border-radius: 50%; background: var(--card); display: grid; place-items: center; }
.choice .dot::after { content: ""; width: 0.7rem; height: 0.7rem; border-radius: 50%; background: var(--ink); transform: scale(0); transition: transform 120ms ease; }
.choice:has(input:checked) { transition-duration: 0ms; background: var(--sky); transform: translate(5px, 5px); box-shadow: none; }
.choice:has(input:checked) .dot::after { transform: scale(1); }
.choice:has(input:focus-visible) { outline: 3px solid var(--focus); outline-offset: 3px; }
.choice__body { display: flex; flex-direction: column; gap: 0.15rem; min-width: 0; }
.choice__title { font-weight: 800; }
.choice__hint { font-size: 0.9rem; color: var(--ink-2); }
.choice--swatch { justify-content: space-between; }
.swatch { width: 3rem; height: 2.25rem; border: var(--line) solid var(--ink); border-radius: 6px; flex: none; }
.swatch--standard { background: linear-gradient(90deg, var(--yellow) 0 25%, var(--pink) 25% 50%, var(--mint) 50% 75%, var(--sky) 75%); }
.swatch--dark { background: #000; box-shadow: inset 0 0 0 6px #fff; }
.swatch--yellow { background: #000; box-shadow: inset 0 0 0 6px #ffe600; }

/* Interruptor */
.switch { position: relative; display: inline-flex; flex: none; width: 4rem; height: 2.25rem; }
.switch input { position: absolute; inset: 0; z-index: 2; opacity: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.switch__track {
  width: 100%; height: 100%; border: var(--line) solid var(--ink); border-radius: 999px; background: var(--card);
  position: relative; transition: background 150ms ease;
}
.switch__track::after {
  content: ""; position: absolute; top: 3px; left: 3px; width: calc(2.25rem - 12px); height: calc(2.25rem - 12px);
  background: var(--ink); border-radius: 50%; transition: transform 150ms cubic-bezier(.2,.8,.2,1);
}
.switch input:checked + .switch__track { background: var(--mint); }
.switch input:checked + .switch__track::after { transform: translateX(calc(4rem - 2.25rem)); }
.switch input:focus-visible + .switch__track { outline: 3px solid var(--focus); outline-offset: 3px; }
.toggle-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem; border: var(--line) solid var(--ink); border-radius: var(--radius-sm); background: var(--card); }
.toggle-row__text { display: flex; flex-direction: column; gap: 0.15rem; min-width: 0; }
.toggle-row__title { font-weight: 800; }
.toggle-row__hint { font-size: 0.9rem; color: var(--ink-2); }
.toggle-row__lead { display: flex; align-items: center; gap: 0.9rem; min-width: 0; flex: 1 1 14rem; }

/* ------------------------------ Layout --------------------------------- */
/* Los hijos de rejillas/flex no deben forzar ancho mínimo: evita desbordes en móvil. */
main :is(.grid, .settings, .services, .hero, .contact-grid, .featured, .ethics, .about-hero, .channels, .player, .help-band, .console__keys, .stack) > * { min-width: 0; }
.shell { width: min(100% - 2 * var(--gutter), var(--wall)); margin-inline: auto; }
.stack { display: flex; flex-direction: column; gap: clamp(1.75rem, 4vw, 3rem); padding-block: clamp(1.25rem, 3vw, 2.5rem) clamp(2rem, 5vw, 4rem); }
.row { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; }
.row--between { justify-content: space-between; }
.cluster { display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center; }
.grid { display: grid; gap: 1.25rem; }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr)); }
.section-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 0.5rem 1rem; margin-bottom: 1.25rem; }
.section-head p { color: var(--ink-2); }
section > h2 + p, section > h2 + .muted { margin-top: 0.5rem; }
.rule { height: var(--line); background: var(--ink); border: 0; margin: 0; }
.lead { font-size: 1.2rem; font-weight: 500; }

/* ------------------------------ Cabecera ------------------------------- */
.skip {
  position: absolute; left: 1rem; top: -100px; z-index: 200;
  padding: 0.75rem 1rem; background: var(--yellow); border: var(--line) solid var(--ink); border-radius: var(--radius-sm);
  font-weight: 800; box-shadow: var(--shadow); text-decoration: none;
}
.skip:focus { top: 1rem; }
.topbar {
  position: sticky; top: 0; z-index: 100;
  background: var(--paper); border-bottom: var(--line) solid var(--ink);
}
.topbar__in { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.75rem 1rem; min-height: 4.5rem; padding-block: 0.5rem; }
.brand { flex: none; }
.brand { display: inline-flex; align-items: center; gap: 0.75rem; text-decoration: none; min-width: 0; }
.brand__mark { width: 2.75rem; height: 2.75rem; flex: none; filter: drop-shadow(3px 3px 0 var(--ink)); }
.brand__text { display: flex; flex-direction: column; line-height: 1.05; }
.brand__name { font-weight: 900; font-size: 1.35rem; letter-spacing: -0.03em; }
.brand__page { font-size: 0.8rem; font-weight: 700; color: var(--ink-2); }
.topnav { display: none; }
@media (min-width: 900px) {
  .topnav { display: flex; gap: 0.4rem; }
  .topnav a {
    display: inline-flex; align-items: center; gap: 0.4em; padding: 0.5em 0.85em;
    border: var(--line) solid transparent; border-radius: var(--radius-sm);
    font-weight: 800; text-decoration: none; font-size: 0.95rem;
  }
  .topnav a:hover { border-color: var(--ink); background: var(--card); }
  .topnav a[aria-current="page"] { border-color: var(--ink); background: var(--yellow); box-shadow: 3px 3px 0 var(--ink); }
}
.contrast-switch {
  display: inline-flex; align-items: center; gap: 0.6rem; flex: none;
  min-height: 3rem; padding: 0.35rem 0.85rem 0.35rem 0.6rem;
  border: var(--line) solid var(--ink); border-radius: var(--radius-sm);
  background: var(--card); font-weight: 800; box-shadow: var(--shadow); cursor: pointer;
  transition: var(--lift);
}
.contrast-switch:hover { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 var(--ink); }
.contrast-switch:active { transition-duration: 0ms; transform: translate(5px, 5px); box-shadow: none; }
.contrast-switch[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.contrast-switch[aria-pressed="true"] .contrast-switch__state { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.contrast-switch__label { display: none; }
@media (min-width: 560px) { .contrast-switch__label { display: inline; } }

/* Barra inferior (móvil) */
.tabbar {
  position: fixed; inset-inline: 0; bottom: 0; z-index: 100;
  background: var(--paper); border-top: var(--line) solid var(--ink);
  padding-bottom: env(safe-area-inset-bottom, 0);
}
.tabbar__in { display: grid; grid-template-columns: repeat(6, 1fr); }
.tabbar a {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.2rem;
  min-height: 4.25rem; padding: 0.4rem 0.2rem; text-decoration: none;
  font-size: 0.7rem; font-weight: 800; letter-spacing: 0.02em; border-right: var(--line) solid var(--ink);
}
.tabbar a:last-child { border-right: 0; }
.tabbar a[aria-current="page"] { background: var(--yellow); }
.tabbar a:focus-visible { outline-offset: -4px; }
@media (min-width: 900px) { .tabbar { display: none; } }

/* ------------------------------ Inicio --------------------------------- */
.hero { display: grid; gap: 1.5rem; align-items: stretch; }
@media (min-width: 960px) { .hero { grid-template-columns: 1.15fr 1fr; gap: 2rem; } }
.hero__title { display: flex; flex-direction: column; gap: 1rem; justify-content: center; }
.hero__title h1 { line-height: 0.95; }
.hero__slogan {
  display: inline-block; align-self: flex-start; padding: 0.25em 0.6em;
  background: var(--yellow); border: var(--line) solid var(--ink); border-radius: var(--radius-sm);
  font-size: clamp(1.25rem, 2.4vw, 1.75rem); font-weight: 800; box-shadow: var(--shadow); transform: rotate(-1.5deg);
}
.hero__art { width: min(100%, 26rem); margin-top: 0.5rem; }
.hero__art .tile { transform-origin: center; }
@media (prefers-reduced-motion: no-preference) {
  html[data-reduce-motion="false"] .hero__art .tile { animation: tile-in 600ms cubic-bezier(.2,.8,.2,1) both; }
  html[data-reduce-motion="false"] .hero__art .tile:nth-child(2) { animation-delay: 60ms; }
  html[data-reduce-motion="false"] .hero__art .tile:nth-child(3) { animation-delay: 120ms; }
  html[data-reduce-motion="false"] .hero__art .tile:nth-child(4) { animation-delay: 180ms; }
  html[data-reduce-motion="false"] .hero__art .tile:nth-child(5) { animation-delay: 240ms; }
  html[data-reduce-motion="false"] .hero__art .tile:nth-child(6) { animation-delay: 300ms; }
  html[data-reduce-motion="false"] .hero__art .tile:nth-child(7) { animation-delay: 360ms; }
  html[data-reduce-motion="false"] .hero__art .tile:nth-child(8) { animation-delay: 420ms; }
}
@keyframes tile-in { from { opacity: 0; transform: translate(-14px, -14px); } to { opacity: 1; transform: none; } }

.console { display: flex; flex-direction: column; gap: 1rem; }
.console__head { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; flex-wrap: wrap; }
.console h2 { font-size: 1.75rem; }
.console__keys { display: grid; gap: 0.9rem; grid-template-columns: 1fr; }
.key {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.75rem;
  min-height: 4.25rem; padding: 0.75rem 1rem;
  border: var(--line) solid var(--ink); border-radius: var(--radius-sm); background: var(--card);
  font-weight: 800; box-shadow: var(--shadow); cursor: pointer; text-align: left;
  transition: var(--lift);
}
.key:hover { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 var(--ink); }
.key:active { transition-duration: 0ms; transform: translate(5px, 5px); box-shadow: none; }
.key__lead { display: flex; align-items: center; gap: 0.75rem; min-width: 0; font-size: 1.1rem; }
.key__state { font-size: 0.8rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; padding: 0.2em 0.6em; border: var(--line) solid var(--ink); border-radius: 999px; background: var(--paper); }
.key[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.key[aria-pressed="true"] .key__state { background: var(--yellow); color: var(--ink); }
.key[aria-pressed="true"] .ibox { background: var(--paper); color: var(--ink); }
.key--static { cursor: default; }
.key--static:hover, .key--static:active { transform: none; box-shadow: var(--shadow); }
.console__keys .key--wide { grid-column: 1 / -1; }

/* Servicios (bento) */
.services { display: grid; gap: 1.25rem; }
@media (min-width: 720px) { .services { grid-template-columns: repeat(3, 1fr); } .services .svc:nth-child(1), .services .svc:nth-child(4) { grid-column: span 2; } }
.svc { display: flex; flex-direction: column; gap: 1rem; text-decoration: none; color: var(--ink); transition: var(--lift); }
.svc:hover { transform: translate(-3px, -3px); box-shadow: var(--shadow-lg); }
.svc:active { transition-duration: 0ms; transform: translate(5px, 5px); box-shadow: none; }
.svc__top { display: flex; align-items: flex-start; justify-content: space-between; gap: 0.75rem; }
.svc h3 { font-size: 1.5rem; }
.svc__cta { display: inline-flex; align-items: center; gap: 0.4em; font-weight: 800; margin-top: auto; }
.svc__cta .ic { transition: transform 150ms ease; }
.svc:hover .svc__cta .ic { transform: translateX(4px); }

/* Lista de recursos */
.res { display: flex; align-items: center; gap: 1rem; text-decoration: none; color: var(--ink); transition: var(--lift); }
.res:hover { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 var(--ink); }
.res:active { transition-duration: 0ms; transform: translate(5px, 5px); box-shadow: none; }
.res__body { display: flex; flex-direction: column; gap: 0.1rem; min-width: 0; flex: 1; }
.res__title { font-weight: 800; font-size: 1.05rem; }
.res__meta { display: inline-flex; align-self: flex-start; margin-top: 0.35rem; padding: 0.1em 0.6em; border: 2px solid var(--ink); border-radius: 999px; font-size: 0.75rem; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; }

/* Banda de ayuda humana */
.help-band { display: grid; gap: 1.25rem; align-items: center; }
@media (min-width: 800px) { .help-band { grid-template-columns: 1.3fr 1fr; } }
.help-band__actions { display: grid; gap: 0.75rem; }

/* ------------------------------ Lector --------------------------------- */
.player { display: grid; gap: 1.25rem; }
@media (min-width: 900px) { .player { grid-template-columns: 1.1fr 1fr; align-items: start; } }
.wave { display: flex; align-items: flex-end; gap: 4px; height: 3rem; padding: 0.4rem 0.5rem; border: var(--line) solid var(--ink); border-radius: var(--radius-sm); background: var(--card); }
.wave i { flex: 1; height: 100%; background: var(--ink); border-radius: 3px 3px 0 0; transform: scaleY(0.4); transform-origin: bottom; transition: transform 200ms ease; }
.wave i:nth-child(4n+2) { transform: scaleY(0.65); }
.wave i:nth-child(4n+3) { transform: scaleY(0.85); }
.wave i:nth-child(4n) { transform: scaleY(0.5); }
.transport { display: flex; align-items: center; justify-content: center; gap: 1rem; }
.transcript {
  padding: 1rem; border: var(--line) solid var(--ink); border-radius: var(--radius-sm); background: var(--paper);
  font-size: 1.2rem; line-height: 1.8; font-weight: 500; user-select: none; overflow-wrap: anywhere;
}
.word-node { display: inline-block; padding: 0 0.2em; border-radius: 4px; transition: background 150ms ease; }
.word-node.is-current { background: var(--pink); box-shadow: 2px 2px 0 var(--ink); font-weight: 800; }
.shortcut { display: flex; align-items: center; gap: 1rem; width: 100%; text-align: left; cursor: pointer; }
.shortcut__body { flex: 1; min-width: 0; }
.shortcut__title { display: block; font-weight: 800; font-size: 1.15rem; line-height: 1.15; margin-bottom: 0.25rem; }
.shortcut__hint { display: block; font-size: 0.95rem; color: var(--ink-2); font-weight: 500; }
.guide-list { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 0.6rem; }
.guide-list li { display: flex; gap: 0.6rem; align-items: flex-start; }
.guide-list .ic { margin-top: 0.15em; }

.audio { width: 100%; height: 3rem; border: var(--line) solid var(--ink); border-radius: var(--radius-sm); background: var(--card); }
html[data-easy-mode="true"] .audio { height: 3.5rem; }

/* ------------------------------ Señas ---------------------------------- */
.featured { display: grid; gap: 1.25rem; }
@media (min-width: 1000px) { .featured { grid-template-columns: 1.55fr 1fr; align-items: start; } }
.featured__side { display: flex; flex-direction: column; gap: 1rem; }
.video { position: relative; aspect-ratio: 16 / 9; overflow: hidden; border: var(--line) solid var(--ink); border-radius: var(--radius); background: var(--sky); box-shadow: var(--shadow); }
.video__scene { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; background: var(--paper); cursor: pointer; }
.video:fullscreen { border: 0; border-radius: 0; box-shadow: none; }
.video:fullscreen .video__scene { object-fit: contain; background: #000; }
video::cue { display: none; }
.video__pip {
  position: absolute; top: 0.75rem; right: 0.75rem; width: 28%; max-width: 9rem; aspect-ratio: 3 / 4;
  border: var(--line) solid var(--ink); border-radius: var(--radius-sm); background: var(--mint); overflow: hidden; box-shadow: 4px 4px 0 var(--ink);
}
.video__pip svg { width: 100%; height: 100%; }
.video__pip-tag { position: absolute; left: 0; right: 0; bottom: 0; padding: 0.2em; text-align: center; font-size: 0.7rem; font-weight: 800; background: var(--ink); color: var(--paper); text-transform: uppercase; letter-spacing: 0.06em; }
.video__cc {
  position: absolute; left: 0.75rem; right: 0.75rem; bottom: 0.75rem;
  padding: 0.6rem 0.85rem; background: var(--ink); color: var(--paper); border-radius: var(--radius-sm);
  font-weight: 700; font-size: clamp(0.85rem, 1.6vw, 1.05rem); line-height: 1.35;
}
.video__cc small { display: block; font-size: 0.8em; font-weight: 800; color: var(--yellow); letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: 0.2em; }
.timeline { display: flex; align-items: center; gap: 0.75rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.timeline__track { flex: 1; height: 1.1rem; border: var(--line) solid var(--ink); border-radius: 999px; background: var(--card); overflow: hidden; cursor: pointer; }
.timeline__fill { height: 100%; background: var(--pink); border-right: var(--line) solid var(--ink); }
.controls { display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center; }
.vcard { display: flex; flex-direction: column; gap: 0.75rem; }
.vcard__thumb { position: relative; aspect-ratio: 16 / 9; border: var(--line) solid var(--ink); border-radius: var(--radius-sm); overflow: hidden; display: grid; place-items: center; }
.vcard__thumb svg { width: 100%; height: 100%; }
.vcard__dur { position: absolute; right: 0.5rem; bottom: 0.5rem; padding: 0.15em 0.5em; background: var(--ink); color: var(--paper); font-size: 0.8rem; font-weight: 800; border-radius: 6px; }
.vcard h3 { font-size: 1.2rem; }
.vcard p { font-size: 0.95rem; color: var(--ink-2); }
.vcard__meta { font-size: 0.85rem; font-weight: 700; }

/* ------------------------------ Ajustes -------------------------------- */
.settings { display: grid; gap: 1.5rem; }
@media (min-width: 960px) { .settings { grid-template-columns: 1fr 1fr; align-items: start; } .settings .span-2 { grid-column: 1 / -1; } }
.setting-block { display: flex; flex-direction: column; gap: 1rem; }
.setting-block__head { display: flex; align-items: center; gap: 0.9rem; }
.setting-block__head p { color: var(--ink-2); font-size: 0.95rem; }
.setting-group { display: flex; flex-direction: column; gap: 0.75rem; }
.font-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.75rem; }
@media (max-width: 559px) { .video__pip { width: 24%; } .video__cc { font-size: 0.8rem; padding: 0.45rem 0.6rem; } }
.font-preview { padding: 0.75rem 1rem; border: var(--line) dashed var(--ink); border-radius: var(--radius-sm); }
.help-link { display: flex; align-items: center; gap: 1rem; text-decoration: none; color: var(--ink); width: 100%; text-align: left; cursor: pointer; }
.help-link__body { flex: 1; min-width: 0; }
.help-link__body span { display: block; }
.help-link__hint { font-size: 0.9rem; color: var(--ink-2); font-weight: 500; }

/* Diálogo FAQ */
.dialog { position: fixed; inset: 0; z-index: 300; display: none; align-items: flex-end; justify-content: center; padding: 1rem; background: rgba(17, 17, 17, 0.55); }
.dialog.is-open { display: flex; }
@media (min-width: 720px) { .dialog { align-items: center; } }
.dialog__panel { width: min(100%, 40rem); max-height: 90dvh; overflow: auto; display: flex; flex-direction: column; gap: 1rem; }
.dialog__head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
details { border: var(--line) solid var(--ink); border-radius: var(--radius-sm); background: var(--card); }
details + details { margin-top: 0.6rem; }
summary { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.9rem 1rem; font-weight: 800; cursor: pointer; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary .ic { transition: transform 150ms ease; }
details[open] summary { border-bottom: var(--line) solid var(--ink); background: var(--yellow); border-radius: 5px 5px 0 0; }
details[open] summary .ic { transform: rotate(180deg); }
details > p { padding: 0.9rem 1rem; }

/* ------------------------------ Acerca --------------------------------- */
.ethics { display: grid; gap: 1.25rem; }
@media (min-width: 900px) { .ethics { grid-template-columns: repeat(3, 1fr); } }
.ethics .piece { display: flex; flex-direction: column; gap: 0.9rem; }
.ethics h3 { font-size: 1.3rem; }
.about-hero { display: grid; gap: 1.5rem; align-items: center; }
@media (min-width: 900px) { .about-hero { grid-template-columns: 1.2fr 1fr; } }
.checklist { list-style: none; padding: 0; display: grid; gap: 0.6rem; }
.checklist li { display: flex; gap: 0.6rem; align-items: flex-start; padding: 0.6rem 0.8rem; border: var(--line) solid var(--ink); border-radius: var(--radius-sm); background: var(--card); }
.checklist .ibox { width: 2rem; height: 2rem; border-width: 2px; }

/* ------------------------------ Contacto ------------------------------- */
.channels { display: grid; gap: 1rem; }
@media (min-width: 640px) and (max-width: 959px) { .channels { grid-template-columns: 1fr 1fr; } }
.channel { display: flex; align-items: center; gap: 1rem; text-decoration: none; color: var(--ink); transition: var(--lift); }
a.channel:hover { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 var(--ink); }
a.channel:active { transition-duration: 0ms; transform: translate(5px, 5px); box-shadow: none; }
.channel__body { display: flex; flex-direction: column; gap: 0.1rem; min-width: 0; }
.channel__title { font-weight: 800; }
.channel__hint { font-size: 0.9rem; color: var(--ink-2); overflow-wrap: anywhere; }
.contact-grid { display: grid; gap: 1.5rem; }
@media (min-width: 960px) { .contact-grid { grid-template-columns: 1fr 1.2fr; align-items: start; } }
.form { display: flex; flex-direction: column; gap: 1.1rem; }
.radios { display: flex; flex-direction: column; gap: 0.5rem; }
.radio { display: flex; align-items: center; gap: 0.75rem; min-height: 2.75rem; cursor: pointer; font-weight: 700; }
.radio input { width: 1.5rem; height: 1.5rem; margin: 0; accent-color: var(--ink); cursor: pointer; }
.success { display: none; flex-direction: column; gap: 0.5rem; }
.success.is-visible { display: flex; }

/* --------------------- Aparición en cascada al desplazarse ---------------- */
/* site.js marca html[data-reveal] antes del primer pintado y añade .rv-in a cada
   sección cuando entra en pantalla. Sin JS nada queda oculto. */
html[data-reveal] .rv { opacity: 0; transform: translate(-14px, -14px); }
html[data-reveal] .rv-in .rv { animation: tile-in 600ms var(--ease-out) both; animation-delay: min(calc(var(--i, 0) * 60ms), 540ms); }
html[data-reduce-motion="true"] .rv { opacity: 1 !important; transform: none !important; }
@media (prefers-reduced-motion: reduce) { .rv { opacity: 1 !important; transform: none !important; } }

/* ----------------------------- Modo fácil ------------------------------ */
html[data-easy-mode="true"]:not([data-font-scale="xxl"]) { font-size: 137.5%; }
html[data-easy-mode="true"] body { line-height: 1.8; letter-spacing: 0.015em; word-spacing: 0.08em; }
html[data-easy-mode="true"] h1 { font-size: clamp(2.5rem, 6vw, 4rem); }
html[data-easy-mode="true"] h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
html[data-easy-mode="true"] .lead { font-size: 1.25rem; }
html[data-easy-mode="true"] .btn, html[data-easy-mode="true"] .key { min-height: 3.75rem; }
html[data-easy-mode="true"] .btn--sq { width: 3.75rem; height: 3.75rem; }
html[data-easy-mode="true"] :is(.tag:not(.contrast-switch__state):not([data-guide-count]), .res__meta, .vcard__meta, .section-head p, .svc__top .tag, .wave, .console > .muted) { display: none !important; }
html[data-easy-mode="true"] .svc h3, html[data-easy-mode="true"] .vcard h3 { font-size: 1.6rem; }
html[data-easy-mode="true"] .measure { max-width: 50ch; }
/* Con letra grande, la navegación superior pasa a una segunda fila completa */
@media (min-width: 900px) {
  html[data-easy-mode="true"] .topnav, html[data-font-scale="xxl"] .topnav, html[data-font-scale="lg"] .topnav { order: 3; flex-basis: 100%; justify-content: center; padding-bottom: 0.25rem; }
  html[data-easy-mode="true"] .contrast-switch, html[data-font-scale="xxl"] .contrast-switch, html[data-font-scale="lg"] .contrast-switch { margin-left: auto; }
}

/* --------------------------- Modo guiado ------------------------------- */
.guide-bar { display: none; position: sticky; top: 4.5rem; z-index: 90; margin-bottom: 1.5rem; }
html[data-guided-mode="true"] .guide-bar { display: block; }
.guide-bar__in { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.75rem; }
.guide-bar__step { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem; font-weight: 800; font-size: 1.1rem; }
.guide-bar__nav { display: flex; gap: 0.6rem; }
html[data-guided-mode="true"] main [data-step][hidden] { display: none !important; }
html[data-guided-mode="true"] main [data-step] { scroll-margin-top: 10rem; }

/* --------------------------- Alto contraste ---------------------------- */
html[data-contrast="dark"] {
  --paper: #000; --card: #000; --ink: #fff; --ink-2: #fff;
  --yellow: #000; --pink: #000; --mint: #000; --sky: #000; --focus: #ffe600;
}
html[data-contrast="yellow"] {
  --paper: #000; --card: #000; --ink: #ffe600; --ink-2: #ffe600;
  --yellow: #000; --pink: #000; --mint: #000; --sky: #000; --focus: #fff;
}
html[data-contrast="dark"] .tag--demo, html[data-contrast="yellow"] .tag--demo,
html[data-contrast="dark"] .btn--ink, html[data-contrast="dark"] .piece--ink, html[data-contrast="dark"] .ibox--ink, html[data-contrast="dark"] .tag--ink,
html[data-contrast="yellow"] .btn--ink, html[data-contrast="yellow"] .piece--ink, html[data-contrast="yellow"] .ibox--ink, html[data-contrast="yellow"] .tag--ink {
  background: var(--ink); color: var(--paper);
}
html[data-contrast="dark"] .hero__slogan, html[data-contrast="yellow"] .hero__slogan,
html[data-contrast="dark"] .topnav a[aria-current="page"], html[data-contrast="yellow"] .topnav a[aria-current="page"],
html[data-contrast="dark"] .tabbar a[aria-current="page"], html[data-contrast="yellow"] .tabbar a[aria-current="page"],
html[data-contrast="dark"] .word-node.is-current, html[data-contrast="yellow"] .word-node.is-current,
html[data-contrast="dark"] details[open] summary, html[data-contrast="yellow"] details[open] summary,
html[data-contrast="dark"] .choice:has(input:checked), html[data-contrast="yellow"] .choice:has(input:checked),
html[data-contrast="dark"] .switch input:checked + .switch__track, html[data-contrast="yellow"] .switch input:checked + .switch__track,
html[data-contrast="dark"] .timeline__fill, html[data-contrast="yellow"] .timeline__fill,
html[data-contrast="dark"] ::selection, html[data-contrast="yellow"] ::selection {
  background: var(--ink); color: var(--paper);
}
html[data-contrast="dark"] .switch input:checked + .switch__track::after, html[data-contrast="yellow"] .switch input:checked + .switch__track::after,
html[data-contrast="dark"] .choice:has(input:checked) .dot::after, html[data-contrast="yellow"] .choice:has(input:checked) .dot::after { background: var(--paper); }
html[data-contrast="dark"] .choice:has(input:checked) .dot, html[data-contrast="yellow"] .choice:has(input:checked) .dot { border-color: var(--paper); }
html[data-contrast="dark"] .video__cc, html[data-contrast="yellow"] .video__cc { border: var(--line) solid var(--ink); }
html[data-contrast="dark"] .key[aria-pressed="true"] .key__state, html[data-contrast="yellow"] .key[aria-pressed="true"] .key__state { background: var(--paper); color: var(--ink); border-color: var(--paper); }
html[data-contrast="dark"] .video__cc small { color: #fff; }
html[data-contrast="dark"] .input, html[data-contrast="yellow"] .input { box-shadow: none; }
html[data-contrast="dark"] .input[aria-invalid="true"], html[data-contrast="yellow"] .input[aria-invalid="true"] { background: #000; border-style: dashed; }
html[data-contrast="dark"] .error, html[data-contrast="yellow"] .error { background: #000; border-color: var(--ink); }
html[data-contrast="dark"] .swatch--standard, html[data-contrast="yellow"] .swatch--standard { background: #000; }
html[data-contrast="dark"] .swatch--dark { box-shadow: inset 0 0 0 6px #fff; }
html[data-contrast="yellow"] .swatch--yellow { box-shadow: inset 0 0 0 6px #ffe600; }
html[data-contrast="dark"] select.input, html[data-contrast="yellow"] select.input {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><path d='M6 9l6 6 6-6'/></svg>");
}
html[data-contrast="yellow"] select.input {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffe600' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><path d='M6 9l6 6 6-6'/></svg>");
}
html[data-contrast="dark"] .art-fill, html[data-contrast="yellow"] .art-fill { fill: var(--paper); }
html[data-contrast="dark"] .art-stroke, html[data-contrast="yellow"] .art-stroke { stroke: var(--ink); }
html[data-contrast="dark"] .art-ink, html[data-contrast="yellow"] .art-ink { fill: var(--ink); }
html[data-contrast="dark"] .dialog, html[data-contrast="yellow"] .dialog { background: rgba(0, 0, 0, 0.85); }
html[data-contrast="dark"] .brand__mark, html[data-contrast="yellow"] .brand__mark { filter: none; }

/* Filtros de daltonismo (SVG feColorMatrix definido en cada página) */
html[data-color-filter="protanopia"] body { filter: url(#f-protanopia); }
html[data-color-filter="deuteranopia"] body { filter: url(#f-deuteranopia); }
html[data-color-filter="tritanopia"] body { filter: url(#f-tritanopia); }
html[data-color-filter="grayscale"] body { filter: grayscale(1); }

/* Reducir movimiento */
html[data-reduce-motion="true"] *, html[data-reduce-motion="true"] *::before, html[data-reduce-motion="true"] *::after {
  animation: none !important; transition: none !important; scroll-behavior: auto !important;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* Destacar elementos clicables */
html[data-highlight-clickable="true"] a, html[data-highlight-clickable="true"] button, html[data-highlight-clickable="true"] .choice, html[data-highlight-clickable="true"] .switch {
  outline: 3px solid var(--sky); outline-offset: 3px;
}
html[data-contrast="dark"][data-highlight-clickable="true"] :is(a, button, .choice, .switch),
html[data-contrast="yellow"][data-highlight-clickable="true"] :is(a, button, .choice, .switch) { outline-color: var(--ink); }
html[data-highlight-clickable="true"] :is(a, button, .choice, .switch):focus-visible { outline: 3px solid var(--focus); }

/* Espaciado e interlineado amplio */
html[data-wide-spacing="true"] p, html[data-wide-spacing="true"] li, html[data-wide-spacing="true"] .transcript {
  line-height: 2 !important; letter-spacing: 0.04em !important; word-spacing: 0.12em;
}