body {
  margin: 0;
  font-family: "Segoe UI", "Noto Sans TC", sans-serif;
  background: #f5f7fb;
  color: #18233a;
}

.shell {
  width: min(760px, 92vw);
  margin: 20px auto;
  display: grid;
  gap: 12px;
}

h1 {
  margin: 0;
  font-size: 1.2rem;
}

.hint {
  margin: 0;
  font-size: 0.9rem;
  opacity: 0.78;
}

.card {
  background: #fff;
  border: 1px solid #d9e1f3;
  border-radius: 12px;
  padding: 12px;
  display: grid;
  gap: 8px;
}

label {
  font-size: 0.82rem;
  font-weight: 700;
}

input {
  border: 1px solid #b9c7e3;
  border-radius: 10px;
  padding: 8px 10px;
  font-size: 0.92rem;
}

.row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

button {
  border: 1px solid #7b95cf;
  border-radius: 999px;
  background: #f6f9ff;
  color: #1a2f59;
  font-weight: 700;
  padding: 7px 12px;
  cursor: pointer;
}

button:hover {
  background: #e6eeff;
}

.status {
  min-height: 72px;
  border: 1px solid #d3dcf0;
  border-radius: 10px;
  background: #f8fafe;
  margin: 0;
  padding: 8px;
  white-space: pre-wrap;
  font-size: 0.78rem;
}