:root {
  --ink: oklch(0.205 0 0);
  --paper: oklch(1 0 0);
  --paper-ink: oklch(0.145 0 0);
  --wash: oklch(0.97 0 0);
  --muted: oklch(0.556 0 0);
  --rule: oklch(0.922 0 0);
  --focus: oklch(0.708 0 0);
  --on-ink: oklch(0.985 0 0);
  --font: "Pretendard Variable", Pretendard, -apple-system, "Segoe UI", "Malgun Gothic", sans-serif;
}
:root[data-theme="dark"] {
  --ink: oklch(0.922 0 0);
  --paper: oklch(0.145 0 0);
  --paper-ink: oklch(0.985 0 0);
  --wash: oklch(0.269 0 0);
  --muted: oklch(0.708 0 0);
  --rule: oklch(1 0 0 / 10%);
  --focus: oklch(0.556 0 0);
  --on-ink: oklch(0.205 0 0);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --ink: oklch(0.922 0 0);
    --paper: oklch(0.145 0 0);
    --paper-ink: oklch(0.985 0 0);
    --wash: oklch(0.269 0 0);
    --muted: oklch(0.708 0 0);
    --rule: oklch(1 0 0 / 10%);
    --focus: oklch(0.556 0 0);
    --on-ink: oklch(0.205 0 0);
  }
}
.only-dark {
  display: none;
}
:root[data-theme="dark"] .only-light {
  display: none;
}
:root[data-theme="dark"] .only-dark {
  display: block;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .only-light {
    display: none;
  }
  :root:not([data-theme]) .only-dark {
    display: block;
  }
}
@media (max-width: 480px) {
  .top nav {
    gap: 8px;
  }
  .brand span {
    display: none;
  }
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--paper-ink);
  font: 400 0.9375rem/1.6 var(--font);
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
}
:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
  border-radius: 6px;
}

.top,
main,
footer {
  width: min(960px, 100% - 32px);
  margin-inline: auto;
}
.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  text-decoration: none;
}
.top nav {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.875rem;
}
.top nav a {
  text-decoration: none;
  color: var(--paper-ink);
}
@media (hover: hover) and (pointer: fine) {
  .top nav a:hover {
    color: var(--muted);
  }
}
@media (max-width: 560px) {
  .top nav a {
    display: none;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 32px;
  padding: 0 12px;
  border-radius: 10px;
  font: 500 0.875rem var(--font);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn:active {
  transform: translateY(1px);
}
.btn-primary,
.top nav a.btn-primary {
  background: var(--ink);
  color: var(--on-ink);
}
.btn-outline {
  background: var(--paper);
  color: var(--paper-ink);
  border-color: var(--rule);
}
@media (hover: hover) and (pointer: fine) {
  .btn-outline:hover {
    background: var(--wash);
  }
  .btn-primary:hover {
    opacity: 0.9;
  }
}

.hero {
  padding: 24px 0 64px;
  text-align: center;
}
h1 {
  margin: 0;
  font-size: 2.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.ko-name {
  color: var(--muted);
  font-weight: 500;
}
.lead {
  margin: 16px 0 0;
  font-size: 1.25rem;
  font-weight: 500;
}
.sub {
  margin: 8px auto 0;
  max-width: 34em;
  color: var(--muted);
}
.cta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 32px;
}
.note {
  margin: 16px 0 0;
  font-size: 0.8125rem;
  color: var(--muted);
}

section {
  padding: 40px 0;
}
.label {
  margin: 0 0 24px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
article {
  padding: 16px;
  border: 1px solid var(--rule);
  border-radius: 10px;
}
article h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 500;
}
article p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--muted);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.chips li {
  padding: 2px 10px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--wash);
  font-size: 0.8125rem;
  font-weight: 500;
}

.keys {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0 32px;
  margin: 0;
}
.keys div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 0;
}
.keys dt,
.keys dd {
  margin: 0;
}
.keys dd {
  color: var(--muted);
  font-size: 0.875rem;
  text-align: right;
}
kbd {
  display: inline-block;
  min-width: 24px;
  padding: 0 6px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--wash);
  font: 500 0.75rem/22px var(--font);
  text-align: center;
}

footer {
  padding: 32px 0 48px;
  font-size: 0.8125rem;
  color: var(--muted);
}
footer p {
  margin: 0;
}

.sub-h {
  margin: 24px 0 4px;
  font-size: 0.875rem;
  font-weight: 600;
}
.keys + .note {
  margin-top: 8px;
}
.doc {
  margin: 16px 0 0;
}
.doc dt {
  margin: 20px 0 4px;
  font-weight: 600;
  font-size: 0.9375rem;
}
.doc dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.875rem;
  max-width: 46em;
}
.keys dt span {
  color: var(--muted);
}
section[id] {
  scroll-margin-top: 16px;
}

#keys-toggle {
  margin-top: 24px;
}
#keys-more[hidden] {
  display: none;
}

.top nav a.badge {
  display: inline-flex;
  align-items: center;
}
.top nav a.badge img {
  display: block;
}

.carousel {
  position: relative;
}
.stage {
  position: relative;
}
.track {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  border: 1px solid light-dark(oklch(0 0 0 / 0.2), oklch(1 0 0 / 0.28));
  border-radius: 10px;
  box-shadow: 0 10px 30px light-dark(oklch(0 0 0 / 0.16), oklch(0 0 0 / 0.6));
}
.track::-webkit-scrollbar {
  display: none;
}
.slide {
  flex: 0 0 100%;
  scroll-snap-align: start;
}
.slide img {
  width: 100%;
  height: auto;
}
.slide img.only-light {
  display: block;
}
.car-btn {
  position: absolute;
  top: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-top: -16px;
  padding: 0;
  border: 1px solid var(--rule);
  border-radius: 10px;
  background: var(--paper);
  color: var(--paper-ink);
  cursor: pointer;
}
.car-btn:active {
  transform: translateY(1px);
}
.car-btn:disabled {
  opacity: 0.5;
  cursor: default;
}
.car-prev {
  left: 8px;
}
.car-next {
  right: 8px;
}
@media (hover: hover) and (pointer: fine) {
  .car-btn:not(:disabled):hover {
    background: var(--wash);
  }
}
.car-count {
  margin: 4px 0 0;
  font-size: 0.8125rem;
  font-feature-settings: "tnum";
  color: var(--muted);
}
.credits {
  margin-top: 8px;
}

.btn-icon {
  width: 32px;
  padding: 0;
}
#theme svg {
  display: none;
}
#theme[data-mode="system"] .i-system,
#theme[data-mode="light"] .i-light,
#theme[data-mode="dark"] .i-dark {
  display: block;
}

.screens {
  max-width: 840px;
  margin: 0 auto 32px;
  text-align: left;
}