body {
  font-family: system-ui, sans-serif;
  max-width: 760px;
  margin: 0 auto;
  padding: 1rem;
  background: #f7f7f8;
  color: #222;
}

.card {
  background: #fff;
  border-radius: 14px;
  padding: 1.25rem;
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
  margin-top: 1rem;
}

h1, h2 {
  margin-top: 0;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

input, select, button {
  width: 100%;
  padding: 0.85rem;
  border-radius: 10px;
  border: 1px solid #ccc;
  font-size: 1rem;
  box-sizing: border-box;
}

button {
  cursor: pointer;
  font-weight: 700;
  margin-top: 1rem;
}

.notice {
  padding: 0.8rem 1rem;
  border-radius: 10px;
  background: #eef5ff;
  margin: 1rem 0;
}

.error {
  padding: 0.8rem 1rem;
  border-radius: 10px;
  background: #ffecec;
  color: #7d0000;
  margin: 1rem 0;
}

.muted {
  color: #666;
}

a.button-link {
  display: inline-block;
  text-decoration: none;
  background: #222;
  color: #fff;
  padding: 0.8rem 1rem;
  border-radius: 10px;
}

#reader {
  border-radius: 12px;
  overflow: hidden;
}