:root {
  color-scheme: dark;
  --background: #050505;
  --panel: #111;
  --text: #f5f5f5;
  --muted: #a1a1aa;
  --line: #2a2a2a;
  --accent: #fff;
}

* { box-sizing: border-box; }

html { background: var(--background); }

body {
  margin: 0;
  color: var(--text);
  background: var(--background);
  font: 16px/1.75 Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-underline-offset: 0.22em; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }

.shell { width: min(820px, calc(100% - 32px)); margin: 0 auto; }

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.brand { color: var(--text); font-size: 20px; font-weight: 800; text-decoration: none; }
.back { color: var(--muted); font-size: 14px; }

main { padding: 72px 0 96px; }
.eyebrow { margin: 0 0 16px; color: var(--muted); font-size: 12px; font-weight: 800; letter-spacing: 0.18em; text-transform: uppercase; }
h1 { margin: 0 0 24px; font-size: clamp(42px, 8vw, 72px); line-height: 0.98; letter-spacing: -0.055em; }
.lede { max-width: 680px; margin: 0 0 48px; color: #d4d4d8; font-size: 19px; }

section { padding: 28px 0; border-top: 1px solid var(--line); }
h2 { margin: 0 0 14px; font-size: 22px; letter-spacing: -0.025em; }
p, ul { margin: 0 0 16px; }
ul { padding-left: 1.2em; }
li { margin: 8px 0; }
.note { padding: 18px 20px; color: #d4d4d8; background: var(--panel); border: 1px solid var(--line); }

footer { padding: 28px 0 44px; color: var(--muted); border-top: 1px solid var(--line); font-size: 13px; }
.links { display: flex; flex-wrap: wrap; gap: 12px 20px; margin-bottom: 14px; }
.links a { color: var(--muted); }

@media (max-width: 560px) {
  header { align-items: flex-start; flex-direction: column; }
  main { padding-top: 48px; }
}