:root {
  --brand-green: #00C879;
  --brand-green-pressed: #00A968;
  --text-primary: #111418;
  --text-secondary: #5F6671;
  --surface-bg: #F7F8FA;
  --surface-card: #FFFFFF;
  --surface-divider: #E9ECEF;
  --max-width: 880px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-primary);
  background: var(--surface-bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}

a { color: var(--brand-green-pressed); text-decoration: none; }
a:hover { text-decoration: underline; }

header {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 18px;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--brand-green);
  color: white;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.5px;
}
.brand-tld { color: var(--text-secondary); font-weight: 500; }

header nav { display: flex; gap: 20px; }
header nav a { color: var(--text-secondary); font-weight: 500; }

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px;
}

.hero {
  padding: 48px 0;
  text-align: center;
}
.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(34px, 6vw, 56px);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -1.5px;
}
.hero .lede {
  margin: 0 auto 32px;
  max-width: 580px;
  color: var(--text-secondary);
  font-size: 18px;
}

.cta-row { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.cta-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--brand-green);
  color: white;
  padding: 14px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 16px;
}
.cta-primary[aria-disabled="true"] { opacity: 0.7; cursor: not-allowed; pointer-events: none; }
.cta-note { color: rgba(255,255,255,0.75); font-weight: 400; font-size: 14px; }

section.features, section.contact, section.legal {
  background: var(--surface-card);
  border: 1px solid var(--surface-divider);
  border-radius: 14px;
  padding: 28px 32px;
  margin: 24px 0;
}

section h2 {
  margin: 0 0 16px;
  font-size: 22px;
  font-weight: 700;
}

.features ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
.features li {
  padding: 12px 0;
  border-bottom: 1px solid var(--surface-divider);
}
.features li:last-child { border-bottom: none; }
.features strong { color: var(--text-primary); }

.legal h3 { font-size: 17px; margin-top: 24px; margin-bottom: 8px; }
.legal p, .legal li { color: var(--text-primary); }
.legal ul { padding-left: 22px; }
.legal .updated {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: -4px;
  margin-bottom: 24px;
}

footer {
  max-width: var(--max-width);
  margin: 24px auto 48px;
  padding: 24px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
}
footer p { margin: 4px 0; }