:root {
  --bg: #0f172a;
  --bg-dark: #020617;
  --card: #1e293b;
  --text: #e5e7eb;
  --accent: #22c55e;
  --accent-strong: #4ade80;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

section {
  padding: 70px 20px;
}

h1, h2 {
  text-align: center;
}

p {
  max-width: 800px;
  margin: auto;
}

.hero {
  background: radial-gradient(circle at top, #1e293b, #020617);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-content {
  text-align: center;
  max-width: 900px;
}

.hero h1 {
  font-size: 2.5em;
}

.hero p {
  margin: 20px 0;
  font-size: 1.1em;
}

.btn-primary {
  display: inline-block;
  margin-top: 20px;
  padding: 15px 30px;
  background: var(--accent);
  color: #000;
  border-radius: 50px;
  text-decoration: none;
  font-weight: bold;
  transition: transform .2s, box-shadow .2s;
}

.btn-primary:hover {
  transform: scale(1.05);
  box-shadow: 0 0 30px rgba(34,197,94,.6);
}

.section {
  background: var(--bg);
}

.section.dark {
  background: var(--bg-dark);
}

.center {
  text-align: center;
  margin-top: 15px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.card {
  background: var(--card);
  padding: 25px;
  border-radius: 15px;
  text-align: center;
  box-shadow: 0 10px 25px rgba(0,0,0,.4);
}

.highlight {
  color: var(--accent);
}

.cta-final {
  background: linear-gradient(135deg, #22c55e, #16a34a);
  color: #000;
  text-align: center;
}

.btn-big {
  display: inline-block;
  margin: 30px 0;
  padding: 18px 40px;
  background: #000;
  color: #22c55e;
  border-radius: 50px;
  font-size: 1.2em;
  font-weight: bold;
  text-decoration: none;
}

.micro {
  display: block;
  margin-top: 10px;
  font-size: .9em;
  opacity: .8;
}

footer {
  background: #020617;
  text-align: center;
  padding: 20px;
  font-size: .85em;
}