:root {
  color-scheme: dark;
  --bg: #07111b;
  --panel: rgba(10, 20, 33, 0.82);
  --panel-strong: rgba(18, 33, 54, 0.92);
  --text: #f3f7fb;
  --muted: #acc1d8;
  --line: rgba(165, 198, 233, 0.18);
  --accent: #6bd4ff;
  --accent-strong: #3f8cff;
  --accent-soft: rgba(107, 212, 255, 0.16);
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.32);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 16px;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Manrope", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(88, 156, 255, 0.18), transparent 34%),
    radial-gradient(circle at top right, rgba(107, 212, 255, 0.22), transparent 28%),
    linear-gradient(180deg, #09111a 0%, #05090f 100%);
  color: var(--text);
}

body {
  padding: 32px 20px 56px;
}

a {
  color: inherit;
}

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

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(107, 212, 255, 0.24), rgba(63, 140, 255, 0.34));
  border: 1px solid rgba(107, 212, 255, 0.28);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
  font-weight: 800;
}

.brand-copy strong {
  display: block;
  font-size: 0.98rem;
}

.brand-copy span {
  color: var(--muted);
  font-size: 0.84rem;
}

.nav-link {
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
}

.hero,
.card,
.section {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.hero {
  border-radius: var(--radius-xl);
  padding: 34px;
  margin-bottom: 24px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid rgba(107, 212, 255, 0.2);
  color: #dff6ff;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 18px 0 12px;
  font-size: clamp(2.2rem, 4vw, 3.8rem);
  line-height: 1.04;
}

.hero p {
  margin: 0;
  max-width: 760px;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #04111c;
}

.button-secondary {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
  color: var(--text);
}

.grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  border-radius: var(--radius-lg);
  padding: 24px;
  text-decoration: none;
}

.card h2,
.card h3,
.section h2,
.section h3 {
  margin: 0 0 12px;
}

.card p,
.section p,
.section li {
  color: var(--muted);
  line-height: 1.75;
}

.section {
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-top: 20px;
}

.section ul {
  margin: 10px 0 0;
  padding-left: 18px;
}

.meta-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-top: 18px;
}

.meta-item {
  padding: 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.meta-item strong {
  display: block;
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.footer {
  margin-top: 26px;
  color: var(--muted);
  font-size: 0.92rem;
  text-align: center;
}

code {
  padding: 0.18em 0.42em;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  color: #eef7ff;
  font-family: "SFMono-Regular", ui-monospace, monospace;
}

@media (max-width: 720px) {
  body {
    padding: 18px 14px 32px;
  }

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

  .hero,
  .section,
  .card {
    padding: 22px;
  }
}