/* Reset básico */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Base */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(circle at top left, #1e3a8a, #020617);
  color: #e5e7eb;
  line-height: 1.6;
}

/* Containers */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  padding: 20px 0;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: 700;
  font-size: 20px;
}

.header-link {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  font-size: 14px;
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.10);
}

.header-link:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.18);
}

/* Hero */
.hero {
  padding: 80px 0 60px;
}

.hero-content h1 {
  font-size: 44px;
  font-weight: 700;
  margin-bottom: 12px;
}

.highlight {
  color: #3b82f6;
}

.trust-line {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 14px;
}

.hero-subtitle {
  max-width: 760px;
  font-size: 18px;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 28px;
}

/* CTA */
.cta-button {
  display: inline-block;
  background: linear-gradient(90deg, #3b82f6, #2563eb);
  color: #fff;
  padding: 14px 28px;
  border-radius: 12px;
  font-weight: 700;
  text-decoration: none;
  margin-bottom: 18px;
}

.cta-button:hover {
  opacity: 0.92;
}

.cta-note {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.62);
  margin-bottom: 46px;
}

/* Features */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.feature-card {
  background: rgba(255, 255, 255, 0.05);
  padding: 20px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.feature-card h3 {
  margin-bottom: 8px;
  font-size: 16px;
}

.feature-card p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
}

code {
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 13px;
}

/* Como funciona */
.how-it-works {
  padding: 80px 0;
}

.how-it-works h2 {
  font-size: 28px;
  margin-bottom: 24px;
}

.steps {
  list-style: decimal;
  padding-left: 20px;
  margin-bottom: 22px;
}

.steps li {
  margin-bottom: 12px;
  font-size: 15px;
}

.sandbox-note {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  max-width: 820px;
}

/* Footer */
.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 32px 0;
  text-align: center;
}

.footer-content {
  max-width: 720px;
  margin: 0 auto;
}

.footer-main {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 6px;
}

.footer-sub {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.4;
}

/* Responsivo */
@media (max-width: 640px) {
  .hero-content h1 {
    font-size: 34px;
  }

  .hero-subtitle {
    font-size: 16px;
  }
}