:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #1c1c1e;
  background: #f2f2f7;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 88% 8%, rgba(0, 122, 255, .16), transparent 34%),
    radial-gradient(circle at 8% 88%, rgba(52, 199, 89, .10), transparent 32%),
    #f2f2f7;
}

header, main, footer { width: min(760px, calc(100% - 40px)); margin-inline: auto; }
header { display: flex; align-items: center; justify-content: space-between; padding: 24px 0; }
header a { color: #1c1c1e; font-weight: 750; font-size: 20px; text-decoration: none; }
nav { display: flex; gap: 16px; flex-wrap: wrap; }
nav a, footer a { color: #007aff; font-size: 15px; text-decoration: none; }
main {
  margin-top: 24px;
  padding: clamp(28px, 6vw, 56px);
  border: 1px solid rgba(255,255,255,.82);
  border-radius: 30px;
  background: rgba(255,255,255,.78);
  box-shadow: 0 24px 70px rgba(0,0,0,.08);
  backdrop-filter: blur(24px);
}
h1 { margin-top: 0; font-size: clamp(2rem, 7vw, 3.5rem); letter-spacing: -.05em; }
h2 { margin-top: 32px; letter-spacing: -.02em; }
p, li { color: #5d5d63; line-height: 1.75; }
footer { padding: 28px 0 50px; color: #8e8e93; font-size: 14px; }