:root {
  --bg: #0a0e1a;
  --panel: #101826;
  --text: #f8fafc;
  --muted: rgba(248, 250, 252, 0.74);
  --subtle: rgba(248, 250, 252, 0.52);
  --line: rgba(148, 163, 184, 0.18);
  --accent: #60a5fa;
  --max: 920px;
  --radius: 20px;
  --shadow: 0 24px 90px rgba(2, 6, 23, 0.42);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(59, 130, 246, 0.24), transparent 32%),
    radial-gradient(circle at bottom right, rgba(37, 99, 235, 0.18), transparent 28%),
    linear-gradient(180deg, #0a0e1a 0%, #020617 100%);
}

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

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(10, 14, 26, 0.78);
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 0;
}

.brand {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
  text-decoration: none;
}

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

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: flex-end;
}

.nav a {
  color: var(--subtle);
  text-decoration: none;
  font-size: 0.95rem;
}

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

.hero {
  padding: 72px 0 28px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(96, 165, 250, 0.24);
  background: rgba(96, 165, 250, 0.1);
  color: #bfdbfe;
  font-size: 0.84rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero h1 {
  margin: 18px 0 16px;
  font-size: clamp(2.2rem, 4vw, 4rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.lede {
  max-width: 760px;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.75;
}

.meta {
  margin-top: 18px;
  color: var(--subtle);
  font-size: 0.95rem;
}

.card {
  margin: 28px 0 56px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(16, 24, 38, 0.95) 0%, rgba(10, 14, 26, 0.9) 100%);
  box-shadow: var(--shadow);
}

.section {
  padding: 28px 0;
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
}

.section:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.section h2 {
  margin: 0 0 14px;
  font-size: 1.4rem;
  letter-spacing: -0.03em;
}

.section h3 {
  margin: 18px 0 10px;
  font-size: 1.02rem;
  letter-spacing: -0.02em;
}

.section p,
.section li {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.75;
}

.section ul,
.section ol {
  margin: 12px 0 0 20px;
  padding: 0;
}

.grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.info-box {
  padding: 20px;
  border-radius: 18px;
  border: 1px solid rgba(96, 165, 250, 0.22);
  background: rgba(37, 99, 235, 0.1);
}

.info-box strong {
  display: block;
  margin-bottom: 8px;
  font-size: 0.92rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #bfdbfe;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 20px;
  border-radius: 14px;
  text-decoration: none;
  font-weight: 600;
}

.button.primary {
  color: #0a0e1a;
  background: #f8fafc;
}

.button.secondary {
  color: var(--text);
  background: rgba(248, 250, 252, 0.08);
  border: 1px solid rgba(248, 250, 252, 0.14);
}

.footer {
  padding: 0 0 56px;
  color: var(--subtle);
  font-size: 0.95rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  padding-top: 18px;
  border-top: 1px solid rgba(148, 163, 184, 0.12);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

@media (max-width: 720px) {
  .topbar-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    justify-content: flex-start;
  }

  .hero {
    padding-top: 48px;
  }

  .card {
    padding: 22px;
  }
}