:root {
  color-scheme: dark;
  --bg: #101827;
  --text: #edf1f7;
  --muted: #b7c3d7;
  --line: #33415a;
  --accent: #ffd665;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", "Malgun Gothic", sans-serif;
  font-synthesis: none;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.75; word-break: keep-all; }
a { color: inherit; text-underline-offset: .22em; }
a:hover { color: var(--accent); }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
code { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .9em; overflow-wrap: anywhere; }
h1, h2, p { margin: 0; }
h1, h2 { line-height: 1.25; letter-spacing: -.035em; }
h1 { font-size: clamp(2rem, 4.4vw, 3rem); font-weight: 750; }
h2 { font-size: 1.5rem; }
main, header, footer { width: min(850px, calc(100% - 48px)); margin-inline: auto; }
.skip { position: absolute; top: -80px; left: 16px; background: var(--accent); color: var(--bg); padding: 8px; z-index: 2; }
.skip:focus { top: 8px; }
header { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 20px; border-bottom: 1px solid var(--line); font-size: .9rem; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; line-height: 1.4; }
.brand img { border-radius: 10px; }
.hero { padding-block: 64px 44px; }
.eyebrow { color: var(--accent); font-size: .75rem; letter-spacing: .12em; margin-bottom: 18px; font-weight: 700; }
.release { margin-top: 14px; }
.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-bottom: 40px; }
.features article { padding: 22px; border: 1px solid var(--line); background: #162239; border-radius: 14px; }
.features span { color: var(--accent); font-size: .7rem; letter-spacing: .08em; }
.features h2 { font-size: 1.1rem; margin-block: 14px 12px; }
.features p { color: var(--muted); font-size: .9rem; }
.store-install { margin-top: 20px; }
.manual-install { margin-top: 12px; }
.migration { margin-top: 18px; }
.lead { color: var(--muted); margin-top: 18px; max-width: 42rem; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 9px 24px; border-radius: 8px; text-decoration: none; font-weight: 700; border: 1px solid var(--line); }
.button.primary { background: var(--accent); border-color: var(--accent); color: #1d2532; }
.button:hover { filter: brightness(1.06); }
.install { padding-block: 28px 32px; border-top: 1px solid var(--line); }
.steps { margin: 20px 0; padding-left: 1.5rem; }
.steps li { padding-left: 6px; }
.steps li + li { margin-top: 14px; }
.steps li::marker { color: var(--accent); font-weight: 700; }
.note { color: var(--muted); font-size: .9rem; }
.details-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); padding-block: 16px; }
summary { cursor: pointer; font-weight: 650; }
details p { color: var(--muted); margin-top: 12px; }
.preview img { display: block; width: min(100%, 520px); height: auto; margin: 24px auto 8px; border-radius: 12px; }
.help { padding-block: 24px 40px; font-size: .9rem; }
footer { display: flex; gap: 20px; flex-wrap: wrap; padding-block: 20px 32px; border-top: 1px solid var(--line); color: var(--muted); font-size: .8rem; }
@media (max-width: 600px) {
  main, header, footer { width: calc(100% - 32px); }
  header { gap: 12px; font-size: .8rem; }
  .brand { max-width: 75%; }
  .brand img { width: 32px; height: 32px; }
  .hero { padding-block: 32px; }
  .features { grid-template-columns: 1fr; }
}