:root {
  color-scheme: dark;
  --ink: #f4f0e8;
  --muted: #b8c0ca;
  --bg: #07111f;
  --panel: #0d1b2a;
  --line: #26384a;
  --amber: #d58b22;
  --teal: #6db5ad;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  background:
    radial-gradient(circle at 20% 0%, rgba(109, 181, 173, 0.16), transparent 32rem),
    linear-gradient(180deg, #07111f 0%, #0a1624 55%, #07111f 100%);
  color: var(--ink);
}

a {
  color: #f0b65f;
}

.shell {
  width: min(880px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 56px;
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 22px;
}

.mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(213, 139, 34, 0.18);
  color: var(--amber);
  border: 1px solid rgba(213, 139, 34, 0.55);
}

nav {
  display: flex;
  gap: 16px;
  color: var(--muted);
}

main {
  padding-top: 40px;
}

.eyebrow {
  color: var(--teal);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}

h1 {
  margin: 8px 0 12px;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.05;
}

h2 {
  margin: 36px 0 12px;
  font-size: 24px;
}

p,
li {
  color: var(--muted);
}

.summary {
  font-size: 18px;
  max-width: 720px;
}

.panel {
  margin-top: 28px;
  padding: 22px;
  background: rgba(13, 27, 42, 0.78);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 8px;
  background: var(--amber);
  color: #10131a;
  font-weight: 700;
  text-decoration: none;
}

footer {
  margin-top: 56px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 640px) {
  header,
  nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .grid {
    grid-template-columns: 1fr;
  }
}