body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f9fafb;
  color: #333;
}
h1, h2 {
  color: #2563eb;
  text-align: center;
}
.hero {
  text-align: center;
  padding: 60px 20px;
  background: #eef2ff;
}
.hero .sub {
  margin: 10px 0;
  font-size: 1.1em;
  color: #555;
}
button {
  background: #2563eb;
  color: #fff;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}
.steps, .benefits, .usecases, .demo {
  padding: 40px 20px;
  max-width: 700px;
  margin: auto;
}
.step, .benefits ul li, .usecases ul li {
  margin: 10px 0;
}
.chatbox {
  border: 1px solid #ccc;
  border-radius: 10px;
  padding: 10px;
  background: #fff;
}
#chat-window {
  height: 200px;
  overflow-y: auto;
  border: 1px solid #eee;
  margin-bottom: 10px;
  padding: 10px;
  background: #fafafa;
}
#chat-input {
  width: 70%;
  padding: 8px;
}
footer {
  text-align: center;
  padding: 30px;
  background: #e5e7eb;
  margin-top: 40px;
}