:root {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
}
body {
  display: flex;
  min-height: 100vh;
  align-items: center;
  justify-content: center;
  background: #f3f4f6;
  margin: 0;
}
.card {
  background: #fff;
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
  width: 360px;
  text-align: center;
}
input {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid #ddd;
  margin-bottom: 12px;
  color: #000000;
}
button {
  padding: 10px 14px;
  border-radius: 8px;
  border: 0;
  background: #0b76ff;
  color: #fff;
  cursor: pointer;
}
button:hover {
  opacity: 0.80;
}
.result img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-top: 12px;
}
.loading {
  color: #666;
}
.hint {
  color: #888;
}