:root {
  color-scheme: dark;
  font-family: "Microsoft YaHei", "Segoe UI", sans-serif;
  background: #080d16;
  color: #edf3ff;
}

body {
  margin: 0;
}

.shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 32px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 30px;
}

h2 {
  font-size: 18px;
  margin-bottom: 18px;
}

p {
  color: #8fa2bd;
  margin-top: 6px;
}

.badge {
  border: 1px solid #25324a;
  border-radius: 8px;
  padding: 8px 12px;
  color: #48d7ff;
  background: #0f1d30;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.panel {
  border: 1px solid #1d2940;
  border-radius: 8px;
  padding: 20px;
  background: #101827;
}

.wide {
  grid-column: 1 / -1;
}

label {
  display: block;
  color: #a9bad1;
  margin-bottom: 14px;
}

input {
  box-sizing: border-box;
  width: 100%;
  margin-top: 6px;
  border: 1px solid #2c3a55;
  border-radius: 6px;
  padding: 10px 12px;
  background: #080d16;
  color: #edf3ff;
}

button {
  border: 0;
  border-radius: 6px;
  padding: 10px 14px;
  margin-right: 8px;
  background: #ffae21;
  color: #141414;
  font-weight: 700;
  cursor: pointer;
}

pre {
  min-height: 180px;
  overflow: auto;
  border: 1px solid #1d2940;
  border-radius: 6px;
  padding: 14px;
  background: #080d16;
  color: #c9d7eb;
}

@media (max-width: 760px) {
  .shell {
    padding: 18px;
  }

  .grid {
    grid-template-columns: 1fr;
  }
}