* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #f4f6fb;
  color: #1f2a44;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 28px 16px 40px;
}

h1 {
  margin: 0 0 8px;
}

.desc {
  margin: 0 0 20px;
  color: #5b6b8b;
}

.card {
  display: grid;
  gap: 12px;
  padding: 16px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(21, 34, 66, 0.08);
}

label {
  display: grid;
  gap: 6px;
  font-size: 14px;
}

input,
button {
  height: 38px;
  border-radius: 8px;
  border: 1px solid #d6deef;
  padding: 0 10px;
  font-size: 14px;
}

button {
  border: none;
  background: #2f6df6;
  color: #fff;
  cursor: pointer;
}

button:disabled {
  opacity: 0.7;
  cursor: wait;
}

.result {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.result div {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(21, 34, 66, 0.08);
  padding: 12px;
}

.result h2 {
  margin: 0 0 10px;
  font-size: 16px;
}

img {
  width: 100%;
  min-height: 280px;
  object-fit: contain;
  border: 1px dashed #d6deef;
  border-radius: 8px;
  background: #fafcff;
}

#downloadLink {
  display: inline-block;
  margin-top: 10px;
  text-decoration: none;
  color: #2f6df6;
  font-size: 14px;
}

#status {
  margin-top: 14px;
  padding: 10px 12px;
  background: #0f172a;
  color: #d6e2ff;
  border-radius: 8px;
  min-height: 40px;
}

@media (max-width: 760px) {
  .result {
    grid-template-columns: 1fr;
  }
}