:root {
  color-scheme: dark;
  --background: #07111f;
  --surface: rgba(16, 31, 52, 0.88);
  --surface-strong: #10243d;
  --text: #f5f8fc;
  --muted: #a9b8ca;
  --accent: #5be0c0;
  --accent-strong: #31bfa0;
  --border: rgba(169, 184, 202, 0.22);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 85% 10%, rgba(49, 191, 160, 0.18), transparent 28rem),
    radial-gradient(circle at 15% 40%, rgba(70, 104, 190, 0.2), transparent 32rem),
    var(--background);
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover,
a:focus-visible {
  color: #8bf0d8;
}

.shell {
  width: min(1080px, calc(100% - 2rem));
  margin: 0 auto;
}

header {
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(14px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 750;
  letter-spacing: 0.03em;
  text-decoration: none;
}

.brand span {
  color: var(--accent);
}

nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

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

main {
  padding: 5rem 0 4rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(18rem, 0.65fr);
  gap: 2rem;
  align-items: center;
  min-height: 58vh;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.16;
}

h1 {
  max-width: 14ch;
  margin: 0;
  font-size: clamp(2.7rem, 7vw, 5.5rem);
  letter-spacing: -0.045em;
}

h2 {
  margin-top: 2.6rem;
  font-size: clamp(1.45rem, 3vw, 2rem);
}

h3 {
  font-size: 1.08rem;
}

.lead {
  max-width: 65ch;
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.card,
.document {
  border: 1px solid var(--border);
  border-radius: 1.25rem;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.card {
  padding: 1.6rem;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.status::before {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 1.1rem var(--accent);
  content: "";
}

.features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 4rem;
}

.features .card p {
  margin-bottom: 0;
  color: var(--muted);
}

.document {
  max-width: 860px;
  margin: 0 auto;
  padding: clamp(1.4rem, 5vw, 4rem);
}

.document h1 {
  max-width: none;
  font-size: clamp(2.1rem, 5vw, 3.6rem);
}

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

.document strong {
  color: var(--text);
}

.meta {
  margin: 1rem 0 2.5rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.callout {
  margin: 2rem 0;
  padding: 1.2rem 1.3rem;
  border-left: 3px solid var(--accent);
  border-radius: 0.35rem;
  background: var(--surface-strong);
}

footer {
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

@media (max-width: 760px) {
  .hero,
  .features {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  main {
    padding-top: 3.5rem;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
  }
}