:root {
  --udl: #7A1F56;
  --udl-2: #9c2f73;
  --udl-dark: #3d0d2b;
  --udl-deep: #220819;
  --rose-25: #fffafd;
  --rose-50: #fff6fb;
  --rose-100: #f8edf4;
  --rose-200: #ead1e2;
  --rose-300: #d9a7c6;
  --rose-500: #b94a8c;
  --ink: #21151e;
  --muted: #665260;
  --muted-2: #83727d;
  --surface: #ffffff;
  --surface-soft: rgba(255, 255, 255, .84);
  --line: #ead7e4;
  --line-strong: #c98fb2;
  --yellow: #ffe29f;
  --yellow-dark: #74510c;
  --blue: #155eef;
  --focus: 0 0 0 .28rem rgba(122, 31, 86, .28);
  --shadow-xl: 0 30px 80px rgba(122, 31, 86, .18);
  --shadow-lg: 0 20px 55px rgba(122, 31, 86, .14);
  --shadow-md: 0 14px 34px rgba(122, 31, 86, .11);
  --radius-2xl: 2.1rem;
  --radius-xl: 1.5rem;
  --radius-lg: 1rem;
  color-scheme: light;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 90% 2%, rgba(248, 210, 233, .95), transparent 29rem),
    radial-gradient(circle at 4% 45%, rgba(122, 31, 86, .08), transparent 26rem),
    linear-gradient(180deg, #fff, var(--rose-50) 56%, #fff);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

button,
input { font: inherit; }

button { cursor: pointer; }

button:focus-visible,
input:focus-visible,
a:focus-visible {
  outline: none;
  box-shadow: var(--focus);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: .75rem;
  z-index: 50;
  transform: translateY(-160%);
  border-radius: .85rem;
  padding: .75rem 1rem;
  background: var(--udl-dark);
  color: #fff;
  font-weight: 900;
  text-decoration: none;
}

.skip-link:focus { transform: translateY(0); }

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1rem, 3vw, 2rem);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  color: var(--udl-dark);
  font-weight: 950;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: .85rem;
  background: var(--udl);
  color: #fff;
  box-shadow: 0 6px 0 var(--udl-deep);
}

.site-tagline {
  margin: 0;
  color: var(--muted);
  font-weight: 750;
}

.app {
  width: min(1560px, calc(100% - 2rem));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 460px);
  gap: clamp(1rem, 4vw, 3rem);
  align-items: end;
  padding: clamp(2rem, 6vw, 5rem) 0 2rem;
}

.eyebrow,
.step-kicker {
  margin: 0 0 .45rem;
  color: var(--udl);
  font-size: .82rem;
  font-weight: 950;
  letter-spacing: .095em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 1030px;
  margin: 0 0 1rem;
  color: var(--udl-dark);
  font-size: clamp(2.7rem, 8vw, 7.4rem);
  line-height: .9;
  letter-spacing: -.075em;
}

.hero p {
  max-width: 780px;
  margin: 0;
  color: var(--muted);
  font-size: 1.12rem;
}

.steps {
  display: grid;
  gap: .9rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps li {
  display: grid;
  grid-template-columns: 3rem 1fr;
  align-items: center;
  gap: .85rem;
  padding: 1rem;
  border: 2px solid var(--line);
  border-radius: 1.25rem;
  background: rgba(255,255,255,.72);
  box-shadow: var(--shadow-md);
}

.steps strong {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: 1rem;
  background: var(--udl);
  color: #fff;
  box-shadow: 0 5px 0 var(--udl-deep);
}

.steps span {
  color: var(--udl-dark);
  font-weight: 950;
}

.reader-step {
  display: grid;
  grid-template-columns: minmax(250px, 380px) 1fr;
  gap: 1rem;
  align-items: stretch;
  padding: 1rem;
  margin-bottom: 1rem;
  border: 2px solid var(--line);
  border-radius: var(--radius-2xl);
  background: var(--surface-soft);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(10px);
}

.section-heading {
  padding: .65rem;
}

.section-heading h2,
.panel-header h2,
.stage-topline h2 {
  margin: 0 0 .35rem;
  color: var(--udl-dark);
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  line-height: 1.05;
}

.section-heading p,
.panel-header p,
.stage-topline p,
.keyboard-card-header p,
.reader-note {
  margin: 0;
  color: var(--muted);
}

.reader-switch {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .85rem;
}

.reader-button {
  min-height: 6.6rem;
  border: 2px solid var(--line);
  border-radius: 1.35rem;
  padding: 1rem;
  background:
    linear-gradient(180deg, #fff, var(--rose-25));
  color: var(--udl-dark);
  text-align: left;
  box-shadow: inset 0 -8px 0 rgba(122,31,86,.06), 0 10px 22px rgba(122,31,86,.08);
}

.reader-button:hover { border-color: var(--line-strong); }

.reader-button.is-active {
  border-color: var(--udl);
  background: linear-gradient(180deg, var(--udl-2), var(--udl));
  color: #fff;
  box-shadow: 0 12px 0 var(--udl-deep), var(--shadow-md);
  transform: translateY(-3px);
}

.reader-name {
  display: block;
  font-size: clamp(1.45rem, 3vw, 2.4rem);
  line-height: 1;
  font-weight: 1000;
  letter-spacing: -.04em;
}

.reader-platform {
  display: block;
  margin-top: .55rem;
  font-weight: 850;
  opacity: .8;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(300px, 385px) minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

.function-panel,
.keyboard-stage {
  border: 2px solid var(--line);
  border-radius: var(--radius-2xl);
  background: rgba(255,255,255,.86);
  box-shadow: var(--shadow-lg);
}

.function-panel {
  position: sticky;
  top: 1rem;
  max-height: calc(100vh - 2rem);
  overflow: hidden;
  display: grid;
  grid-template-rows: auto auto auto minmax(0, 1fr);
}

.panel-header {
  padding: .95rem 1rem .7rem;
  border-bottom: 1px solid var(--line);
}

.filter-disclosure {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 250, 253, .68);
}

.filter-disclosure summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  padding: .72rem 1rem;
  color: var(--udl-dark);
  font-weight: 950;
  cursor: pointer;
  list-style: none;
}

.filter-disclosure summary::-webkit-details-marker { display: none; }

.filter-disclosure summary:hover {
  background: var(--rose-50);
}

.filter-disclosure summary:focus-visible {
  box-shadow: var(--focus);
}

.summary-title,
.summary-help {
  display: block;
}

.summary-title {
  font-size: .95rem;
}

.summary-help {
  margin-top: .05rem;
  color: var(--muted);
  font-size: .72rem;
  font-weight: 850;
  text-transform: uppercase;
  letter-spacing: .07em;
}

.summary-icon {
  display: grid;
  place-items: center;
  width: 1.9rem;
  height: 1.9rem;
  border-radius: .65rem;
  background: var(--rose-100);
  color: var(--udl);
  font-size: 1.25rem;
  transition: transform .18s ease;
}

.filter-disclosure[open] .summary-icon {
  transform: rotate(180deg);
}

.filter-disclosure-content {
  padding: 0 1rem .95rem;
}

.search-form {
  padding: .75rem 0 .7rem;
}

.search-form label,
.category-area h3,
.function-list-header h3 {
  display: block;
  margin: 0 0 .45rem;
  color: var(--udl-dark);
  font-size: .95rem;
  font-weight: 950;
}

.search-field {
  display: flex;
  align-items: center;
  gap: .4rem;
  border: 2px solid var(--line);
  border-radius: 1rem;
  background: #fff;
  padding: .25rem;
}

.search-field:focus-within { border-color: var(--udl); }

.search-field input {
  width: 100%;
  min-width: 0;
  border: 0;
  background: transparent;
  padding: .72rem .75rem;
  color: var(--ink);
}

.search-field input:focus-visible { box-shadow: none; }

.clear-search {
  display: grid;
  place-items: center;
  width: 2.35rem;
  height: 2.35rem;
  flex: 0 0 auto;
  border: 0;
  border-radius: .75rem;
  background: var(--rose-100);
  color: var(--udl-dark);
  font-size: 1.3rem;
  font-weight: 950;
}

.category-area {
  padding: 0 0 .85rem;
}

.category-filters {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
}

.category-button,
.filter-chip button,
.combo-alt-button {
  border: 2px solid var(--line);
  border-radius: 999px;
  padding: .5rem .72rem;
  background: #fff;
  color: var(--udl-dark);
  font-size: .9rem;
  font-weight: 900;
}

.category-button:hover,
.combo-alt-button:hover { border-color: var(--line-strong); }

.category-button.is-active,
.combo-alt-button.is-active {
  border-color: var(--udl);
  background: var(--udl);
  color: #fff;
}

.active-filter-bar {
  display: grid;
  gap: .45rem;
  padding: .6rem 1rem 0;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
  width: 100%;
  border: 2px solid var(--line-strong);
  border-radius: 1rem;
  padding: .6rem;
  background: var(--rose-100);
  color: var(--udl-dark);
  font-size: .9rem;
  font-weight: 850;
}

.filter-chip button {
  padding: .35rem .55rem;
}

.function-list-section {
  min-height: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  padding: .55rem 0 0;
}

.function-list-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: .75rem;
  padding: 0 1rem .45rem;
}

.function-list-header p {
  margin: 0;
  color: var(--muted);
  font-size: .9rem;
  font-weight: 850;
}

.function-list {
  min-height: 0;
  max-height: 100%;
  overflow: auto;
  list-style: none;
  margin: 0;
  padding: 0 1rem 1rem;
  scroll-padding: 8rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: .38rem;
}

.function-group-title {
  position: sticky;
  top: 0;
  z-index: 1;
  grid-column: 1 / -1;
  margin: .25rem 0 .15rem;
  padding: .35rem .45rem;
  border-radius: .8rem;
  background: rgba(255,255,255,.96);
  color: var(--muted);
  font-size: .72rem;
  font-weight: 1000;
  letter-spacing: .065em;
  text-transform: uppercase;
}

.function-item { margin: 0; }

.function-button {
  width: 100%;
  min-height: 0;
  border: 2px solid var(--line);
  border-radius: .85rem;
  padding: .52rem .58rem;
  background: #fff;
  color: var(--ink);
  text-align: left;
  box-shadow: 0 3px 0 rgba(122,31,86,.08);
}

.function-button:hover {
  border-color: var(--line-strong);
  transform: translateY(-1px);
}

.function-button[aria-current="true"] {
  border-color: var(--udl);
  background: linear-gradient(135deg, var(--rose-100), #fff 55%);
  box-shadow: 0 4px 0 var(--udl), var(--shadow-sm, 0 8px 22px rgba(122, 31, 86, .09));
}

.function-button strong {
  display: block;
  margin: 0;
  color: var(--udl-dark);
  font-size: .9rem;
  line-height: 1.12;
}

.function-button .description {
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: var(--muted);
  font-size: .78rem;
  line-height: 1.25;
}

.function-meta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: .55rem;
}

.function-category {
  display: inline-flex;
  width: fit-content;
  border-radius: 999px;
  padding: .18rem .45rem;
  background: var(--rose-100);
  color: var(--udl);
  font-size: .68rem;
  font-weight: 1000;
}

.mini-combo {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: .16rem;
  color: var(--muted);
  font-size: .72rem;
  font-weight: 900;
}

.mini-combo kbd {
  border: 1px solid var(--line-strong);
  border-radius: .34rem;
  padding: .1rem .26rem;
  background: #fff;
  color: var(--udl-dark);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.keyboard-stage {
  min-width: 0;
  padding: 1rem;
}

.stage-topline {
  display: grid;
  grid-template-columns: minmax(250px, 1fr) minmax(260px, 520px);
  gap: 1rem;
  align-items: start;
  padding: .45rem .35rem 1rem;
}

.reader-note {
  justify-self: end;
  max-width: 520px;
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: .85rem;
  background: var(--rose-50);
  font-size: .95rem;
}

.selected-command {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 360px);
  gap: 1rem;
  align-items: stretch;
  border: 2px solid var(--line);
  border-radius: 1.55rem;
  padding: 1rem;
  background: #fff;
  box-shadow: var(--shadow-md);
}

.selected-reader {
  margin: 0 0 .35rem;
  color: var(--udl);
  font-weight: 1000;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: .78rem;
}

.selected-command h3 {
  margin: 0 0 .55rem;
  color: var(--udl-dark);
  font-size: clamp(1.6rem, 4vw, 3.1rem);
  line-height: .96;
  letter-spacing: -.045em;
}

.selected-description {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: 1.02rem;
}

.selected-combo-block {
  display: grid;
  align-content: space-between;
  gap: .75rem;
  border-radius: 1.25rem;
  padding: .9rem;
  background: linear-gradient(135deg, var(--rose-100), #fff);
}

.selected-category {
  display: inline-flex;
  width: fit-content;
  border-radius: 999px;
  padding: .35rem .65rem;
  background: #fff;
  color: var(--udl);
  font-weight: 950;
}

.combo-label {
  margin: 0 0 .45rem;
  color: var(--muted);
  font-size: .8rem;
  font-weight: 950;
  text-transform: uppercase;
  letter-spacing: .07em;
}

.selected-combo {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .38rem;
}

.combo-key {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.85rem;
  min-width: 2.85rem;
  border: 2px solid var(--udl);
  border-radius: .75rem;
  padding: .45rem .72rem .35rem;
  background: #fff;
  color: var(--udl-dark);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 1000;
  box-shadow: 0 5px 0 var(--udl);
}

.combo-key .order {
  position: absolute;
  top: -.55rem;
  left: -.45rem;
  display: grid;
  place-items: center;
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 999px;
  background: var(--udl-dark);
  color: #fff;
  font-size: .72rem;
  font-family: inherit;
}

.combo-plus {
  color: var(--muted);
  font-weight: 1000;
}

.combo-alternatives {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  min-height: 2.75rem;
  padding: .75rem .2rem .3rem;
}

.keyboard-card {
  margin-top: .75rem;
  border: 2px solid var(--line);
  border-radius: var(--radius-2xl);
  background:
    radial-gradient(circle at 50% 0%, rgba(255,255,255,.85), transparent 33%),
    linear-gradient(180deg, #fff, #fbf1f8);
  box-shadow: inset 0 -16px 0 rgba(122,31,86,.05), var(--shadow-xl);
  overflow: hidden;
}

.keyboard-card-header {
  display: grid;
  grid-template-columns: minmax(250px, 1fr) minmax(260px, 520px);
  gap: 1rem;
  align-items: end;
  padding: 1.1rem 1.25rem .6rem;
}

.keyboard-card-header h3 {
  margin: 0;
  color: var(--udl-dark);
  font-size: clamp(1.5rem, 3vw, 2.35rem);
  line-height: 1;
  letter-spacing: -.04em;
}

.keyboard-card-header p {
  font-size: .95rem;
}

.keyboard-legend {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  padding: .35rem 1.25rem .85rem;
  color: var(--muted);
  font-size: .9rem;
  font-weight: 850;
}

.keyboard-legend span {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
}

.legend-dot {
  display: inline-block;
  width: .9rem;
  height: .9rem;
  border-radius: .25rem;
  border: 2px solid var(--line-strong);
  background: #fff;
}

.legend-shortcut {
  border-color: var(--udl-deep);
  background: var(--udl);
}

.legend-filter {
  border-color: var(--yellow-dark);
  background: var(--yellow);
}

.keyboard-perspective {
  padding: 1rem clamp(.7rem, 2vw, 1.4rem) 2rem;
  perspective: 1200px;
}

.visual-keyboard {
  --key-gap: clamp(.28rem, .65vw, .58rem);
  display: grid;
  gap: var(--key-gap);
  min-width: 720px;
  margin: 0 auto;
  transform: rotateX(6deg);
  transform-origin: top center;
  padding: clamp(.8rem, 2vw, 1.35rem);
  border: 1px solid rgba(122,31,86,.16);
  border-radius: 1.8rem;
  background:
    linear-gradient(180deg, rgba(255,255,255,.88), rgba(255,246,251,.88)),
    repeating-linear-gradient(90deg, rgba(122,31,86,.05) 0 1px, transparent 1px 4.4rem);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.85),
    0 28px 60px rgba(61,13,43,.18);
  overflow: visible;
}

.keyboard-row {
  display: flex;
  justify-content: center;
  gap: var(--key-gap);
}

.key-button {
  --key-width: 3.35rem;
  position: relative;
  display: grid;
  grid-template-rows: 1fr auto;
  align-items: center;
  justify-items: center;
  width: var(--key-width);
  min-width: var(--key-width);
  height: 3.35rem;
  border: 1.5px solid #d9bfd0;
  border-bottom-width: 4px;
  border-radius: .82rem;
  padding: .3rem .35rem .22rem;
  background: linear-gradient(180deg, #fff, #f7eef4);
  color: var(--udl-dark);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 950;
  box-shadow:
    0 .5rem 0 #d9bfd0,
    0 .75rem 1rem rgba(61,13,43,.12);
  transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease, background .16s ease;
}

.key-button[data-size="small"] { --key-width: 3rem; }
.key-button[data-size="wide"] { --key-width: 5.05rem; }
.key-button[data-size="xl"] { --key-width: 6.15rem; }
.key-button[data-size="xxl"] { --key-width: 7.4rem; }
.key-button[data-size="space"] { --key-width: min(23rem, 31vw); }
.key-button[data-size="arrow-spacer"] { visibility: hidden; pointer-events: none; }

.key-button:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
}

.key-button:focus-visible {
  z-index: 5;
  transform: translateY(-3px);
}

.key-label {
  line-height: 1.05;
  text-align: center;
  font-size: clamp(.74rem, 1.05vw, .95rem);
}

.key-caption {
  min-height: .72rem;
  color: var(--muted-2);
  font-size: .58rem;
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  font-weight: 950;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.key-marker {
  position: absolute;
  top: -.7rem;
  left: -.55rem;
  z-index: 2;
  display: none;
  place-items: center;
  width: 1.65rem;
  height: 1.65rem;
  border: 2px solid #fff;
  border-radius: 999px;
  background: var(--udl-deep);
  color: #fff;
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  font-size: .82rem;
  font-weight: 1000;
  box-shadow: 0 .25rem .7rem rgba(34,8,25,.35);
}

.key-button.is-shortcut {
  z-index: 3;
  border: 3px solid var(--udl-deep);
  border-bottom-width: 6px;
  background:
    radial-gradient(circle at 50% 18%, rgba(255,255,255,.35), transparent 38%),
    linear-gradient(180deg, var(--udl-2), var(--udl));
  color: #fff;
  box-shadow:
    0 .82rem 0 var(--udl-deep),
    0 1.15rem 1.55rem rgba(61,13,43,.32);
  transform: translateY(-.55rem) scale(1.06);
}

.key-button.is-shortcut .key-marker { display: grid; }
.key-button.is-shortcut .key-caption { color: #fff; }

.key-button.is-filtered {
  outline: 4px solid var(--yellow);
  outline-offset: 3px;
}

.key-button.is-filtered:not(.is-shortcut) {
  border-color: var(--yellow-dark);
  background: linear-gradient(180deg, #fff8df, var(--yellow));
  color: var(--yellow-dark);
}

.key-button.is-partial {
  border-color: var(--rose-500);
  background: var(--rose-100);
}

.textual-keys {
  margin-top: .8rem;
  border: 2px solid var(--line);
  border-radius: 1.25rem;
  padding: 1rem;
  background: #fff;
}

.textual-keys h3 {
  margin: 0 0 .45rem;
  color: var(--udl-dark);
  font-size: 1rem;
}

.textual-keys p {
  margin: 0;
  color: var(--muted);
}

.empty-state {
  margin: .5rem 0 0;
  padding: 1rem;
  border: 2px dashed var(--line-strong);
  border-radius: 1rem;
  background: var(--rose-50);
  color: var(--muted);
}

.site-footer {
  width: min(1560px, calc(100% - 2rem));
  margin: 1rem auto 2rem;
  color: var(--muted);
  font-size: .92rem;
}


@media (min-width: 1280px) {
  .function-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 1360px) and (min-width: 1121px) {
  .workspace {
    grid-template-columns: minmax(420px, 31rem) minmax(0, 1fr);
  }

  .function-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 1120px) {
  .hero,
  .reader-step,
  .workspace,
  .stage-topline,
  .selected-command,
  .keyboard-card-header {
    grid-template-columns: 1fr;
  }

  .function-panel {
    position: static;
    max-height: none;
  }

  .function-list {
    max-height: 26rem;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  }

  .visual-keyboard {
    min-width: 680px;
  }

  .keyboard-perspective {
    overflow-x: auto;
  }
}

@media (max-width: 720px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .reader-switch {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: clamp(2.6rem, 16vw, 4.8rem);
  }

  .steps li {
    grid-template-columns: 2.6rem 1fr;
  }

  .function-list {
    grid-template-columns: 1fr;
  }

  .function-button {
    min-height: auto;
  }

  .key-button {
    --key-width: 3rem;
    height: 3.1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .001ms !important;
  }

  .visual-keyboard { transform: none; }
}


/* v6: paso 2 estrecho y lista compacta de una columna */
.function-panel {
  inline-size: 100%;
}

.function-list {
  grid-template-columns: 1fr;
}

.function-button {
  display: block;
}

.function-button .description,
.function-category {
  display: none;
}

.function-button .function-meta {
  grid-template-columns: minmax(0, 1fr) auto;
}

.function-title-compact {
  display: block;
  min-width: 0;
  color: var(--udl-dark);
  font-size: .9rem;
  font-weight: 950;
  line-height: 1.12;
}

.function-button[aria-current="true"] .function-title-compact {
  color: var(--udl-deep);
}

@media (min-width: 840px) {
  .function-list {
    grid-template-columns: 1fr;
  }
}