body {
  font-family: 'Segoe UI', sans-serif;
  background: #f4f8fb;
  color: #333;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 700px;
  margin: 30px auto;
  padding: 20px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

header {
  background: #1d72b8;
  padding: 15px 30px;
  color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header nav a {
  color: white;
  margin-left: 20px;
  text-decoration: none;
  font-weight: bold;
}

.hero input[type="url"] {
  width: 100%;
  padding: 12px;
  font-size: 16px;
  margin-top: 10px;
  margin-bottom: 15px;
  border: 1px solid #ccc;
  border-radius: 6px;
}

button {
  background: #1d72b8;
  color: white;
  border: none;
  padding: 10px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-weight: bold;
}

button:hover {
  background: #155d8b;
}

.result {
  margin-top: 30px;
}

.result .highlight {
  background: #e1f5fe;
  border-left: 5px solid #039be5;
  padding: 12px;
  font-size: 17px;
  margin: 15px 0;
  word-wrap: break-word;
}

.result div.advice {
  padding: 10px;
  background: #fefefe;
  border-left: 6px solid #4CAF50;
  margin-top: 15px;
}