:root {
  --bg: #08111f;
  --panel: #0f1b2d;
  --panel-border: rgba(130, 170, 255, 0.18);
  --text: #e8eefc;
  --muted: #9fb0cb;
  --accent: #3dd9c6;
  --accent-2: #58a6ff;
  --danger: #ff8a8a;
  --max-width: 920px;
  --radius: 18px;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.7;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(88, 166, 255, 0.16), transparent 28%),
    radial-gradient(circle at top left, rgba(61, 217, 198, 0.12), transparent 26%),
    linear-gradient(180deg, #07101d 0%, #091523 46%, #07111c 100%);
}

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

a:hover {
  color: #7cebdd;
}

.shell {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
  padding: 40px 0 72px;
}

.hero,
.card {
  background: rgba(15, 27, 45, 0.78);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.hero {
  padding: 32px;
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.8rem;
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0 0 12px;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.3rem);
}

h2 {
  margin-top: 28px;
  font-size: 1.4rem;
}

h3 {
  margin-top: 20px;
  font-size: 1.05rem;
}

p,
li {
  color: var(--text);
}

.muted,
.meta,
footer p {
  color: var(--muted);
}

.meta {
  font-size: 0.95rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.card {
  padding: 24px;
}

.card h2 {
  margin-top: 0;
}

.button {
  display: inline-block;
  margin-top: 12px;
  padding: 11px 16px;
  border-radius: 999px;
  color: #04131c;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  text-decoration: none;
  font-weight: 700;
}

.button.secondary {
  color: var(--text);
  background: transparent;
  border: 1px solid var(--panel-border);
}

.legal {
  padding: 32px;
}

.legal ul {
  padding-left: 20px;
}

.notice,
.warning {
  margin: 20px 0;
  padding: 16px 18px;
  border-radius: 14px;
}

.notice {
  background: rgba(88, 166, 255, 0.1);
  border: 1px solid rgba(88, 166, 255, 0.28);
}

.warning {
  background: rgba(255, 138, 138, 0.08);
  border: 1px solid rgba(255, 138, 138, 0.26);
}

code {
  padding: 2px 6px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

footer {
  margin-top: 24px;
  text-align: center;
}

@media (max-width: 640px) {
  .hero,
  .card,
  .legal {
    padding: 22px;
  }

  .shell {
    width: min(calc(100% - 20px), var(--max-width));
    padding-top: 20px;
  }
}