body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background: #f7fafc;
  color: #222;
}
header {
  background: #2d3748;
  color: #fff;
  padding: 2rem 0 1.5rem 0;
  text-align: center;
}
header h1 {
  margin: 0;
  font-size: 2.5rem;
  letter-spacing: 1px;
}
header p {
  margin: 0.5rem 0 0 0;
  font-size: 1.25rem;
  color: #cbd5e1;
}
.cta {
  display: flex;
  justify-content: center;
  margin: 1rem 0 3rem 0rem;
}
.cta a {
  background: #38b2ac;
  color: #fff;
  text-decoration: none;
  padding: 1rem 2rem;
  border-radius: 30px;
  font-size: 1.1rem;
  font-weight: bold;
  transition: background 0.2s;
}
.userlink {
  display: flex;
  justify-content: center;
}
.userlink input {
  margin: 2rem 0;
  height: 30%;
  min-width: 20em;
  padding: 0.5rem 1rem;
}
.cta a:hover {
  background: #319795;
}
.features {
  max-width: 900px;
  margin: 0 auto 3rem auto;
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: center;
}
.feature {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  padding: 2rem;
  flex: 1 1 250px;
  min-width: 250px;
  max-width: 300px;
  text-align: center;
}
.feature h3 {
  margin-top: 0;
  color: #2d3748;
}
footer {
  text-align: center;
  color: #888;
  padding: 1.5rem 0;
  font-size: 0.95rem;
  background: #2d3748;
}