body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  background: #ffffff;
  color: #1f2937;
  line-height: 1.6;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 60px 24px;
  text-align: center;
}

.logo {
  max-width: 200px;
  margin-bottom: 24px;
}

h1 {
  font-size: 2.2rem;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.tagline {
  font-size: 1.25rem;
  color: #1f2937;
  font-weight: 600;
  margin-bottom: 8px;
}

.subtitle {
  font-size: 1rem;
  color: #6b7280;
  margin-bottom: 48px;
}

/* Features */
.features {
  text-align: left;
  margin: 0 0 48px 0;
  display: grid;
  gap: 24px;
}

.feature h3 {
  font-size: 1.05rem;
  margin: 0 0 4px 0;
}

.feature p {
  font-size: 0.95rem;
  color: #4b5563;
  margin: 0;
}

/* Pricing */
.pricing {
  margin-bottom: 32px;
}

.pricing-note {
  font-size: 1rem;
  color: #4b5563;
}

.pricing-note strong {
  color: #1f2937;
  font-size: 1.15rem;
}

/* CTA */
.cta {
  margin-bottom: 8px;
}

.cta-sub {
  font-size: 0.85rem;
  color: #9ca3af;
  margin-bottom: 32px;
}

.btn {
  display: inline-block;
  padding: 14px 40px;
  background: #1f2937;
  color: #fff;
  text-decoration: none;
  border-radius: 8px;
  font-size: 1.05rem;
  font-weight: 600;
  transition: background 0.2s;
}

.btn:hover {
  background: #374151;
}

/* Contact */
.contact {
  font-size: 0.95rem;
}

.contact a {
  color: #1f2937;
  text-decoration: none;
  border-bottom: 1px solid #d1d5db;
}

.contact a:hover {
  border-bottom-color: #1f2937;
}

/* Top navigation */
.topnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  border-bottom: 1px solid #e5e7eb;
}

.topnav-brand {
  display: flex;
  align-items: center;
}

.topnav-logo {
  height: 36px;
}

.topnav-login {
  display: inline-block;
  padding: 8px 20px;
  background: #1f2937;
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: background 0.2s;
}

.topnav-login:hover {
  background: #374151;
}

@media (max-width: 500px) {
  .container { padding: 40px 18px; }
  h1 { font-size: 1.8rem; }
  .tagline { font-size: 1.1rem; }
}