:root {
  --bg0: #06262e;
  --bg1: #0b3d4a;
  --ink: #e8f4f6;
  --muted: #9db8be;
  --accent: #3ec6c9;
  --card: rgba(255, 255, 255, 0.06);
  --line: rgba(255, 255, 255, 0.12);
  --font: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(62, 198, 201, 0.22), transparent 60%),
    linear-gradient(160deg, var(--bg1), var(--bg0));
}
a { color: var(--accent); }
.wrap {
  width: min(720px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2.5rem 0 4rem;
}
.brand {
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 0.35rem;
}
.tag {
  color: var(--muted);
  margin: 0 0 1.75rem;
  line-height: 1.5;
  font-size: 1.05rem;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.25rem 1.35rem;
  margin: 0 0 1rem;
}
.card h2 {
  margin: 0 0 0.55rem;
  font-size: 1.15rem;
}
.card p, .card li {
  color: var(--muted);
  line-height: 1.55;
  margin: 0.35rem 0;
}
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.1rem;
  margin: 1.25rem 0 2rem;
}
.nav a {
  text-decoration: none;
  font-weight: 700;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.18);
}
.nav a:hover { border-color: var(--accent); }
.cta {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.75rem 1.2rem;
  border-radius: 999px;
  background: linear-gradient(180deg, #67e8f9, #0e7490);
  color: #042f2e;
  font-weight: 800;
  text-decoration: none;
}
footer {
  margin-top: 2.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}
code, .mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
}
ol { padding-left: 1.2rem; }