:root {
  --bg: #ffffff;
  --bg-alt: #f7f8fa;
  --primary: #111111;
  --accent: #4f46e5;
  --text: #444;
  --radius: 12px;
}

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

body {
  font-family: "Inter", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

.section {
  padding: 80px 0;
}

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

/* HEADER */
.header {
  border-bottom: 1px solid #eee;
  background: #fff;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.logo {
  font-weight: 700;
  font-size: 1.4rem;
}

.logo span {
  color: var(--accent);
}

.nav a {
  margin-left: 24px;
  text-decoration: none;
  color: var(--primary);
  font-weight: 500;
}

/* HERO */
.hero {
  padding: 120px 0;
  text-align: center;
}

.hero h2 {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 20px;
}

.hero h2 span {
  color: var(--accent);
}

.hero p {
  max-width: 600px;
  margin: 0 auto 32px;
  font-size: 1.1rem;
}

/* BUTTON */
.btn {
  padding: 12px 28px;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
}

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

/* CARDS */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.card {
  background: #fff;
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(0,0,0,0.04);
}

.card h4 {
  margin-bottom: 12px;
  color: var(--primary);
}

/* CTA */
.cta {
  padding: 80px 0;
  text-align: center;
  background: #111;
  color: #fff;
}

.cta h3 {
  font-size: 2rem;
  margin-bottom: 12px;
}

.cta p {
  margin-bottom: 28px;
}

/* FOOTER */
.footer {
  padding: 40px 0;
  text-align: center;
  font-size: 0.9rem;
  color: #777;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero h2 {
    font-size: 2.2rem;
  }

  .nav {
    display: none;
  }
}