@font-face {
  font-family: Switzer;
  src: url("assets/fonts/switzer-regular.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: Switzer;
  src: url("assets/fonts/switzer-medium.woff2") format("woff2");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

:root {
  color-scheme: light dark;
  --background: #f8f9f6;
  --ink: #232622;
  --muted: #62675f;
  --button: #242823;
  --button-ink: #f3f5ef;
  --button-inset: #3b4138;
  --focus: #9c391b;
  --motion: cubic-bezier(0.32, 0.72, 0, 1);
  font-family: Switzer, system-ui, sans-serif;
  font-synthesis: none;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #151615;
    --ink: #edeeeb;
    --muted: #a4a7a1;
    --button: #e5e8e1;
    --button-ink: #232622;
    --button-inset: #cbd0c5;
    --focus: #f29371;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--background);
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--ink); color: var(--background); }

a { color: inherit; text-decoration: none; }

a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 7px;
  border-radius: 4px;
}

.page {
  width: min(100% - 5rem, 54rem);
  margin-inline: auto;
  padding-block: 4.5rem 2.75rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  width: fit-content;
  font-size: 2rem;
  line-height: 1;
  letter-spacing: -0.025em;
}

.brand-mark {
  display: block;
  width: 4.75rem;
  height: 4.75rem;
  object-fit: contain;
  margin-left: -0.55rem;
}

h1 {
  margin: 3.25rem 0 3.1rem;
  font-size: clamp(2.5rem, 5.8vw, 4.5rem);
  line-height: 1.12;
  font-weight: 400;
  letter-spacing: -0.035em;
}

.languages { margin-bottom: 2.5rem; }

summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  cursor: pointer;
  list-style: none;
  border-radius: 4px;
  -webkit-tap-highlight-color: transparent;
}

summary::-webkit-details-marker { display: none; }

.language-heading { display: grid; gap: 0.25rem; }
.feature-title { font-size: 1.5rem; line-height: 1.35; }
.feature-description { color: var(--muted); font-size: 1rem; }

.disclosure-label {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.65rem;
  min-height: 2.75rem;
  flex-shrink: 0;
  font-size: 0.9375rem;
}

.disclosure-icon { width: 1.25rem; height: 1.25rem; }
.disclosure-plus { transform-origin: center; transition: transform 220ms var(--motion), opacity 220ms var(--motion); }
.when-open { display: none; }
details[open] .when-open { display: inline; }
details[open] .when-closed { display: none; }
details[open] .disclosure-plus { transform: rotate(90deg); opacity: 0; }

summary:active .disclosure-icon { transform: scale(0.88); }
summary:active .disclosure-label { opacity: 0.65; }

.language-content {
  padding-block: 1.75rem 0.25rem;
}

.language-note {
  margin: 0;
  max-width: 42rem;
  color: var(--muted);
  font-size: 0.9375rem;
}

.language-list {
  list-style: none;
  margin: 1.5rem 0;
  padding: 0;
  columns: 3;
  column-gap: 2rem;
  font-size: 0.9375rem;
  line-height: 1.5;
}

.language-list li { break-inside: avoid; padding-block: 0.3rem; }
.language-list span { color: var(--muted); }
.language-footnote { padding-top: 0.5rem; }

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.85rem 4.5rem;
  margin: 0;
}

.feature dt {
  margin: 0 0 0.35rem;
  font-size: 1.125rem;
  line-height: 1.4;
  font-weight: 400;
}

.feature dd {
  margin: 0;
  max-width: 24rem;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.5;
  text-wrap: pretty;
}

.contact {
  display: flex;
  justify-content: center;
  margin-top: 3rem;
}

.contact-button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  min-height: 3.5rem;
  padding: 0.4rem 0.4rem 0.4rem 1.6rem;
  border-radius: 999px;
  background: var(--button);
  color: var(--button-ink);
  font-size: 1rem;
  line-height: 1.4;
  font-weight: 500;
  white-space: nowrap;
  transition: transform 180ms var(--motion), opacity 180ms var(--motion);
  -webkit-tap-highlight-color: transparent;
}

.button-icon {
  display: grid;
  place-items: center;
  width: 2.65rem;
  height: 2.65rem;
  border-radius: 50%;
  background: var(--button-inset);
}

.button-icon svg { width: 1.15rem; height: 1.15rem; transition: transform 240ms var(--motion); }
.contact-button:active { transform: scale(0.97); opacity: 0.82; transition-duration: 80ms; }
.contact-button:focus-visible { border-radius: 999px; }

footer {
  margin-top: 3rem;
  color: var(--muted);
  font-size: 0.875rem;
  text-align: center;
}

footer p { margin: 0; }
footer a { padding-block: 0.5rem; }

@media (hover: hover) {
  summary:hover .disclosure-label { text-decoration: underline; text-underline-offset: 0.3em; }
  .contact-button:hover .button-icon svg { transform: translate(1.5px, -1.5px); }
  footer a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 0.25em; }
}

@media (max-width: 767px) {
  .page { width: min(100% - 3rem, 35rem); padding-block: 2.5rem 2rem; }
  .brand { font-size: 1.65rem; gap: 0.8rem; }
  .brand-mark { width: 4rem; height: 4rem; margin-left: -0.45rem; }
  h1 { margin-block: 2.5rem; font-size: clamp(2.35rem, 7.5vw, 3.5rem); letter-spacing: -0.035em; }
  .languages { margin-bottom: 2rem; }
  .feature-list { grid-template-columns: minmax(0, 1fr); gap: 1.65rem; }
  .feature dd { max-width: 30rem; }
  .language-list { columns: 2; column-gap: 1.25rem; }
  .feature-title { font-size: 1.35rem; }
  .disclosure-label { font-size: 0.875rem; gap: 0.35rem; }
  summary { align-items: flex-start; gap: 1rem; }
}

@media (max-width: 420px) {
  h1 { max-width: 9em; }
  .disclosure-label .when-closed,
  details[open] .disclosure-label .when-open { display: none; }
  .disclosure-label { min-width: 2.75rem; justify-content: center; }
  .language-list { columns: 1; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .contact-button:active,
  .contact-button:hover .button-icon svg,
  summary:active .disclosure-icon { transform: none; }
}

@media (prefers-contrast: more) {
  :root { --muted: var(--ink); }
  .contact-button { outline: 1px solid currentColor; }
}

@media print {
  :root { --background: white; --ink: black; --muted: #333; }
  .page { width: 100%; padding: 0; }
  h1 { font-size: 2.5rem; margin-block: 1.5rem; }
  .brand-mark { width: 3rem; height: 3rem; }
  .contact-button { color: black; background: none; padding: 0; }
  .button-icon, .disclosure-label { display: none; }
  .feature { break-inside: avoid; }
}