body {
  font-family: 'Segoe UI', sans-serif;
  background: #f7faf9;
  margin: 0;
  padding: 0;
  color: #222;
}
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1em 2em;
  background-color: #02A95C;
  color: #fff;
}
.brand {
  font-size: 1.4em;
  font-weight: bold;
}
.nav a {
  margin-left: 1em;
  color: #fff;
  text-decoration: none;
  font-weight: 500;
}
.hero {
  padding: 3em 2em;
  text-align: center;
}
.hero h1 {
  font-size: 2em;
  margin-bottom: 0.5em;
}
.btn {
  display: inline-block;
  padding: 10px 20px;
  background: #02A95C;
  color: #fff;
  text-decoration: none;
  border-radius: 5px;
  margin-top: 1em;
}
.footer {
  background: #f0f0f0;
  padding: 1em;
  text-align: center;
  font-size: 0.9em;
}
.hidden-admin {
  position: fixed;
  bottom: 5px;
  right: 5px;
  font-size: 1px;
  opacity: 0;
}
@media (max-width: 600px) {
  .nav { display: flex; flex-wrap: wrap; }
  .nav a { margin: 0.5em 0.5em 0 0; }
  .topbar { flex-direction: column; align-items: flex-start; }
}