:root {
  color-scheme: dark;
  --ink: #07121d;
  --panel: #0d1d2b;
  --line: #244055;
  --paper: #eef7f4;
  --muted: #9db2c1;
  --jade: #54e1b5;
  --coral: #ff806c;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at 90% 0%, #18364a 0, transparent 34rem), var(--ink);
  color: var(--paper);
  font: 16px/1.65 ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
main { width: min(760px, calc(100% - 36px)); margin: 0 auto; padding: 72px 0 96px; }
.mark { display: inline-grid; place-items: center; width: 48px; height: 48px; border: 1px solid var(--jade); border-radius: 14px; color: var(--jade); font: 700 24px/1 ui-serif, Georgia, serif; }
.eyebrow { margin: 26px 0 8px; color: var(--jade); font: 700 12px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .14em; text-transform: uppercase; }
h1 { max-width: 700px; margin: 0; font: 650 clamp(38px, 7vw, 70px)/.98 ui-serif, Georgia, serif; letter-spacing: -.035em; }
h2 { margin: 42px 0 10px; font: 650 25px/1.2 ui-serif, Georgia, serif; }
h3 { margin: 28px 0 6px; font-size: 17px; }
p, li { color: #ccdae2; }
a { color: var(--jade); }
.lede { max-width: 620px; margin-top: 24px; color: var(--muted); font-size: 19px; }
.ruby-line { margin: 42px 0; padding: 24px; border: 1px solid var(--line); border-radius: 20px; background: color-mix(in srgb, var(--panel) 88%, transparent); font-size: clamp(24px, 5vw, 42px); }
ruby { margin-right: .2em; } rt { color: var(--jade); font: 500 .38em/1 ui-sans-serif, sans-serif; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { display: inline-block; padding: 11px 16px; border: 1px solid var(--jade); border-radius: 999px; color: var(--ink); background: var(--jade); font-weight: 750; text-decoration: none; }
.button.secondary { color: var(--paper); background: transparent; border-color: var(--line); }
.notice { margin: 30px 0; padding: 18px 20px; border-left: 3px solid var(--coral); background: var(--panel); }
.meta { color: var(--muted); font-size: 13px; }
ul { padding-left: 22px; }
footer { margin-top: 64px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
@media (max-width: 560px) { main { padding-top: 38px; } }