:root {
  color-scheme: dark;
  --ink: #f7f8fa;
  --muted: #a9b1bd;
  --panel: rgba(13, 20, 29, 0.86);
  --line: rgba(255, 255, 255, 0.14);
  --cyan: #00c4e8;
  --red: #ff3851;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, rgba(255, 56, 81, 0.22), transparent 34rem),
    radial-gradient(circle at 88% 18%, rgba(0, 196, 232, 0.2), transparent 36rem),
    #05070a;
  font: 16px/1.65 ui-rounded, "SF Pro Rounded", "Avenir Next", sans-serif;
}

main {
  width: min(860px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 80px;
}

nav, article {
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(24px) saturate(1.25);
  -webkit-backdrop-filter: blur(24px) saturate(1.25);
}

nav {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 18px;
  padding: 14px 18px;
  border-radius: 999px;
}

nav strong { margin-right: auto; letter-spacing: 0.04em; }
nav a, article a { color: var(--cyan); }

article {
  padding: clamp(24px, 6vw, 56px);
  border-radius: 34px;
  box-shadow: -16px 0 60px rgba(255, 56, 81, 0.08), 16px 0 60px rgba(0, 196, 232, 0.08);
}

h1 { margin: 0; font-size: clamp(2.3rem, 8vw, 4.8rem); line-height: 1; letter-spacing: -0.055em; }
h2 { margin: 2.3rem 0 0.45rem; font-size: 1.2rem; }
p { margin: 0.45rem 0; }
.eyebrow { color: var(--cyan); font-weight: 800; letter-spacing: 0.16em; text-transform: uppercase; }
.effective, footer { color: var(--muted); }
footer { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line); }

@media (max-width: 560px) {
  main { padding-top: 16px; }
  nav { border-radius: 24px; flex-wrap: wrap; }
  nav strong { width: 100%; }
  article { border-radius: 26px; }
}