:root {
  color-scheme: light;
  --bg: #f1f4f6;
  --surface: #fff;
  --ink: #18222b;
  --muted: #465664;
  --label: #315e78;
  --line: #b8c9d3;
  --accent: #245f82;
  --shadow: 0 18px 45px rgb(19 50 67 / 9%);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
    --bg: #0a0b13;
    --surface: #1c1c1e;
    --ink: #edf1f4;
    --muted: #b3c1cc;
    --label: #8abad3;
    --line: #435665;
    --accent: #8abad3;
    --shadow: 0 18px 45px rgb(0 0 0 / 25%);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0a0b13;
  --surface: #1c1c1e;
  --ink: #edf1f4;
  --muted: #b3c1cc;
  --label: #8abad3;
  --line: #435665;
  --accent: #8abad3;
  --shadow: 0 18px 45px rgb(0 0 0 / 25%);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.55 ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--accent); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.skip { position: absolute; left: -10000px; top: 0; z-index: 10; padding: .6rem 1rem; background: var(--surface); }
.skip:focus { left: 1rem; }
.site-header { max-width: 74rem; margin: auto; min-height: 5rem; padding: 1rem 1.5rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.wordmark { color: var(--ink); text-decoration: none; font-size: 1.3rem; font-weight: 800; letter-spacing: -.025em; }
.theme-toggle { background: var(--surface); color: var(--ink); border: 1px solid var(--line); border-radius: 999px; padding: .5rem .9rem; font: inherit; cursor: pointer; }
main { max-width: 74rem; margin: auto; padding: 0 1.5rem 5rem; }
.hero-art { height: min(27vw, 17rem); min-height: 11rem; border-radius: 1.4rem; overflow: hidden; background: #0a0b13; }
.hero-art img { width: 100%; height: 100%; object-fit: cover; object-position: center 45%; }
.hero-copy { max-width: 55rem; margin: -3.4rem 0 2.5rem 3rem; position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: 1.25rem; padding: 1.8rem 2.2rem; box-shadow: var(--shadow); }
.eyebrow { margin: 0 0 .35rem; color: var(--label); font-size: .79rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: .45rem; font-size: clamp(2rem, 4.5vw, 3.5rem); line-height: 1.12; letter-spacing: -.045em; }
h2 { margin-bottom: .65rem; font-size: 1.45rem; line-height: 1.2; letter-spacing: -.025em; }
.hero-copy p:last-child { margin-bottom: 0; color: var(--muted); font-size: 1.08rem; }
.check-card { max-width: 55rem; margin: 0 0 1.5rem 3rem; padding: 2rem; background: var(--surface); border: 1px solid var(--line); border-radius: 1.25rem; box-shadow: var(--shadow); }
code { font: .88em ui-monospace, SFMono-Regular, Menlo, monospace; overflow-wrap: anywhere; }
footer { max-width: 74rem; margin: auto; padding: 0 1.5rem 2rem; color: var(--muted); font-size: .88rem; }
@media (max-width: 700px) {
  .site-header { min-height: 4.4rem; }
  main { padding: 0 1rem 3rem; }
  .hero-art { border-radius: .9rem; }
  .hero-copy, .check-card { margin-left: 0; }
  .hero-copy { margin-top: -.8rem; padding: 1.3rem; }
  .check-card { padding: 1.3rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }