:root {
  --bg: #ffffff;
  --fg: #14213d;
  --muted: #5b6784;
  --accent: #1e88e5;
  --card: #f3f7fc;
  --hero-from: #e8f2fd;
  --hero-to: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1624;
    --fg: #e8edf7;
    --muted: #9aa7c2;
    --accent: #4aa3f5;
    --card: #182236;
    --hero-from: #16233a;
    --hero-to: #0f1624;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 20px;
}

.hero {
  background: linear-gradient(180deg, var(--hero-from), var(--hero-to));
  padding: 72px 0 56px;
  text-align: center;
}

.badge {
  display: inline-block;
  margin: 0 0 16px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--card);
  color: var(--muted);
  font-size: 0.85rem;
}

h1 {
  margin: 0 0 16px;
  font-size: clamp(1.9rem, 5vw, 2.8rem);
  line-height: 1.2;
}

h2 { margin: 56px 0 20px; font-size: 1.5rem; }
h3 { margin: 0 0 6px; font-size: 1.05rem; }

.sub {
  max-width: 620px;
  margin: 0 auto 28px;
  color: var(--muted);
  font-size: 1.1rem;
}

.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}

.btn:hover { filter: brightness(1.08); }

.small { color: var(--muted); font-size: 0.9rem; margin-top: 14px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.card {
  background: var(--card);
  border-radius: 14px;
  padding: 20px;
}

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

.steps { padding-left: 22px; }
.steps li { margin-bottom: 10px; }

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

footer { padding: 48px 20px; text-align: center; }