:root {
  color-scheme: dark;
  --canvas: #0b1220;
  --surface: #121d30;
  --surface-raised: #18253a;
  --text: #f7f9fc;
  --muted: #c6d0e1;
  --mint: #79e2be;
  --cyan: #79c7f2;
  --lavender: #b8a2f2;
  --line: rgba(198, 208, 225, 0.18);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 82% 14%, rgba(121, 226, 190, 0.12), transparent 30rem),
    radial-gradient(circle at 72% 20%, rgba(121, 199, 242, 0.08), transparent 24rem),
    var(--canvas);
  color: var(--text);
  font-family: Inter, "Segoe UI", system-ui, -apple-system, sans-serif;
  line-height: 1.7;
}

a {
  color: var(--mint);
}

.shell {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-size: 1.2rem;
  font-weight: 750;
  text-decoration: none;
}

.mark {
  position: relative;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(121, 226, 190, 0.32);
  border-radius: 14px;
  background: var(--surface-raised);
}

.mark::before,
.mark::after {
  position: absolute;
  content: "";
  border-radius: 50%;
}

.mark::before {
  inset: 13px;
  background: var(--mint);
  box-shadow: 0 0 16px rgba(121, 226, 190, 0.5);
}

.mark::after {
  inset: 7px;
  border: 1px solid rgba(121, 199, 242, 0.48);
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

nav a {
  color: var(--muted);
  text-decoration: none;
}

nav a:hover,
nav a:focus-visible {
  color: var(--text);
}

main {
  padding: 44px 0 80px;
}

.hero,
.document {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: rgba(18, 29, 48, 0.86);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.22);
}

.hero {
  padding: clamp(32px, 6vw, 68px);
}

.eyebrow {
  color: var(--mint);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.2;
}

h1 {
  max-width: 720px;
  margin: 12px 0 20px;
  font-size: clamp(2.35rem, 7vw, 4.8rem);
  letter-spacing: -0.04em;
}

h2 {
  margin-top: 42px;
  font-size: 1.55rem;
}

h3 {
  margin-top: 28px;
  font-size: 1.15rem;
}

.lead {
  max-width: 700px;
  color: var(--muted);
  font-size: clamp(1.08rem, 2.3vw, 1.3rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-raised);
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.button.primary {
  border-color: transparent;
  background: var(--mint);
  color: #071711;
}

.facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 42px;
}

.fact {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(11, 18, 32, 0.5);
}

.fact strong {
  display: block;
  margin-bottom: 4px;
  color: var(--text);
}

.fact span,
.document p,
.document li {
  color: var(--muted);
}

.document {
  padding: clamp(28px, 6vw, 60px);
}

.document h1 {
  font-size: clamp(2.1rem, 5vw, 3.6rem);
}

.notice {
  margin: 28px 0;
  padding: 18px 20px;
  border-left: 3px solid var(--lavender);
  border-radius: 0 14px 14px 0;
  background: rgba(184, 162, 242, 0.09);
  color: var(--muted);
}

footer {
  padding: 32px 0 48px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 680px) {
  header {
    align-items: flex-start;
    flex-direction: column;
  }

  main {
    padding-top: 20px;
  }

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