:root {
  --bg: #ffffff;
  --text: #1a1d23;
  --muted: #5b6270;
  --accent: #2563eb;
  --accent-text: #ffffff;
  --card-bg: #f6f7f9;
  --border: #e3e5e9;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12141a;
    --text: #e9eaee;
    --muted: #a0a6b2;
    --accent: #4f8cff;
    --accent-text: #0b0d12;
    --card-bg: #1b1e26;
    --border: #2a2d36;
  }
}

* { box-sizing: border-box; }

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

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 16px;
}

.hero {
  padding: 72px 0 48px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin: 0 0 16px;
}

.lede {
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 640px;
  margin: 0 auto 28px;
}

.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.05rem;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-text);
}

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

main section {
  padding: 48px 0;
}

.steps { border-bottom: 1px solid var(--border); }
.features { border-bottom: 1px solid var(--border); }

h2 {
  font-size: 1.5rem;
  margin-bottom: 24px;
}

.steps ol {
  padding-left: 20px;
}

.steps li {
  margin-bottom: 14px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.faq details {
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
}

.faq p {
  color: var(--muted);
  margin: 10px 0 0;
}

footer {
  padding: 32px 0 48px;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}