:root {
  --primary-color: #0056b3;
  --primary-hover: #004494;
  --background: #f4f7f6;
  --card-bg: #ffffff;
  --text-main: #333333;
  --text-muted: #555555;
  --border-radius: 12px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--background);
  color: var(--text-main);
  line-height: 1.6;
  margin: 0;
  padding: 20px;
  display: flex;
  justify-content: center;
}

.container {
  max-width: 650px;
  width: 100%;
  margin-top: 40px;
  margin-bottom: 40px;
}

header {
  text-align: center;
  margin-bottom: 40px;
}

.logo {
  width: 130px;
  height: 130px;
  margin: 0 auto 20px auto;
  display: block;
}

h1 {
  font-size: 2.2rem;
  margin: 0;
  color: #111;
}

.hero-text {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-top: 15px;
}

.card {
  background: var(--card-bg);
  padding: 30px;
  border-radius: var(--border-radius);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  margin-bottom: 25px;
}

.card-highlight {
  border-top: 5px solid var(--primary-color);
}

h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 0;
  font-size: 1.3rem;
  color: #111;
  border-bottom: 1px solid #eee;
  padding-bottom: 12px;
  margin-bottom: 15px;
}

.btn {
  display: inline-block;
  background-color: var(--primary-color);
  color: #ffffff;
  text-decoration: none;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  margin-top: 10px;
  transition: background-color 0.2s ease;
  text-align: center;
  width: 100%;
  box-sizing: border-box;
}

.btn:hover {
  background-color: var(--primary-hover);
}

footer {
  text-align: center;
  margin-top: 50px;
  padding-top: 20px;
  border-top: 1px solid #ddd;
  color: var(--text-muted);
  font-size: 0.95rem;
}

footer a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
}

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

@media (min-width: 600px) {
  .btn {
    width: auto;
  }
}