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

body {
  background: #ffffff;
  color: #000000;
  font-family: "Poppins", sans-serif;
}

header {
  width: 100%;
  padding: 20px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #ffffff;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid #eee;
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 15px;
}

.main-nav a {
  text-decoration: none;
  color: #000;
  font-weight: 500;
}

.btn-whatsapp,
.btn-primary,
.btn-whatsapp-large {
  background: #e00000;
  color: #fff;
  padding: 10px 18px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
}

.btn-whatsapp-large {
  padding: 16px 28px;
  font-size: 18px;
}

.hero {
  padding: 80px 40px;
}

.hero-text h1 {
  font-size: 42px;
  margin-bottom: 20px;
}

.hero-text p {
  font-size: 18px;
  margin-bottom: 25px;
}

.section {
  padding: 80px 40px;
}

.section h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 15px;
}

.section p {
  text-align: center;
  margin-bottom: 40px;
  font-size: 18px;
}

.alt-bg {
  background: #f5f5f5;
}

.cards,
.steps,
.testimonials,
.differentials {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 25px;
}

.card,
.step,
.testimonial,
.diff {
  background: #fff;
  padding: 25px;
  border-radius: 8px;
  border: 1px solid #eee;
}

.contact-form {
  max-width: 600px;
  margin: 40px auto;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.contact-form input,
.contact-form textarea {
  padding: 14px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 16px;
}

footer {
  background: #000;
  color: #fff;
  padding: 40px;
  text-align: center;
}

footer a {
  color: #e00000;
  text-decoration: none;
}

@media (max-width: 900px) {
  header {
    padding: 15px 20px;
  }
  .main-nav {
    display: none;
  }
  .hero {
    padding: 60px 20px;
    text-align: center;
  }
}