body {
  font-family: 'Roboto', sans-serif;
  margin: 0;
  background: #ffffff;
  color: #555;
  line-height: 1.6;
  padding: 0 1rem;
}

header {
  background-color: #34a853;
  color: #fff;
  padding: 1.5rem 1rem;
  text-align: center;
}

h1 {
  margin: 0;
  font-size: 1.8rem;
}

main {
  max-width: 800px;
  margin: auto;
  padding: 2rem 0;
}

.promo {
  text-align: center;
  margin-bottom: 2rem;
}

.promo-box {
  background: #f1f3f4;
  border-radius: 8px;
  padding: 1rem;
  margin: 1rem 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

#promo-code {
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 1rem;
  color: #333;
}

button {
  background-color: #34a853;
  border: none;
  color: white;
  padding: 0.6rem 1.2rem;
  font-weight: bold;
  border-radius: 4px;
  cursor: pointer;
}

button:hover {
  background-color: #2c8c46;
}

.signup-link {
  display: inline-block;
  margin-top: 0.5rem;
  color: #1a73e8;
  font-weight: bold;
  text-decoration: none;
}

.signup-link:hover {
  text-decoration: underline;
}

.benefits,
.faq,
.who {
  margin-top: 2rem;
}

.benefits h2,
.faq h2,
.who h2 {
  text-align: center;
  color: #222;
}

.benefits ul,
.faq ul,
.who ul {
  list-style-type: none;
  padding: 0;
}

.benefits li,
.faq li,
.who li {
  background: #f9f9f9;
  margin: 0.5rem 0;
  padding: 1rem;
  border-left: 4px solid #34a853;
  border-radius: 4px;
}

footer {
  text-align: center;
  font-size: 0.8rem;
  color: #888;
  margin-top: 3rem;
  padding: 1rem 0;
}

footer a {
  color: #1a73e8;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

@media (max-width: 600px) {
  #promo-code {
    font-size: 1.5rem;
  }

  .promo-box {
    padding: 1rem;
  }

  .benefits li,
  .faq li,
  .who li {
    font-size: 0.95rem;
  }
}