body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f5f7fb;
  color: #1f2933;
}

a {
  color: #0055ff;
  text-decoration: none;
}

.header {
  background: #0055ff;
  color: #ffffff;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
}

.btn {
  background: #0055ff;
  color: #ffffff;
  padding: 8px 16px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  font-weight: 600;
}

.btn-outline {
  background: #ffffff;
  color: #0055ff;
  border: 2px solid #0055ff;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
}

.container {
  max-width: 900px;
  margin: 40px auto;
  padding: 0 16px;
}

.card {
  background: #ffffff;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
}

h2 {
  margin-top: 0;
}