:root {
  color-scheme: dark;
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", system-ui, sans-serif;
  background: #071321;
  color: #f7fbff;
  font-synthesis: none;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; margin: 0; }

body {
  background:
    radial-gradient(circle at 15% 10%, rgba(53, 112, 164, .24), transparent 35rem),
    linear-gradient(160deg, #0b2037, #071321 55%);
}

main {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: clamp(48px, 8vw, 88px) 0;
}

header { margin-bottom: 42px; }

.eyebrow {
  margin: 0;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .32em;
  opacity: .64;
}

h1 {
  margin: 8px 0 12px;
  font-family: serif;
  font-size: clamp(2rem, 7vw, 3.5rem);
  font-weight: 400;
  letter-spacing: .08em;
}

header > p:last-child { margin: 0; opacity: .72; }

section {
  margin-top: 16px;
  padding: clamp(20px, 4vw, 30px);
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 18px;
  background: rgba(8, 24, 43, .54);
  box-shadow: 0 20px 60px rgba(0, 0, 0, .16);
  backdrop-filter: blur(14px);
}

h2 { margin: 0 0 14px; font-size: 1.05rem; letter-spacing: .06em; }
p, li { font-size: .9rem; line-height: 1.9; }
p { margin: 10px 0 0; }
ul { margin: 12px 0 0; padding-left: 1.4rem; }
a { color: #c9e7ff; text-underline-offset: 3px; }
code { font-size: .85em; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-top: 28px;
  padding: 0 6px;
  opacity: .7;
}

footer p { margin: 0; font-size: .78rem; }

@media (max-width: 520px) {
  footer { display: block; }
  footer p + p { margin-top: 8px; }
}