:root {
  --bg: #f4f8fb;
  --card: #ffffff;
  --text: #132238;
  --accent: #0a7ea4;
  --line: #d8e6f0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Helvetica Neue", "PingFang SC", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top right, #d2edf8, #f4f8fb 45%);
}

header {
  padding: 24px;
  background: linear-gradient(120deg, #0a7ea4, #15803d);
  color: white;
}

header h1 {
  margin: 0;
  font-size: 26px;
}

header p {
  margin: 8px 0 0;
}

.build-tag {
  margin-top: 10px;
  font-size: 12px;
  opacity: 0.95;
}

main {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 16px;
  max-width: 1080px;
  margin: 0 auto;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 6px 20px rgba(19, 34, 56, 0.08);
}

.status {
  border-left: 6px solid var(--accent);
}

.status p {
  margin: 8px 0 0;
  font-weight: 600;
}

.step h2 {
  margin-bottom: 6px;
}

.hint {
  margin: 0 0 10px;
  color: #2b4964;
  font-size: 13px;
}

label {
  display: block;
  margin-bottom: 10px;
  font-weight: 600;
}

input,
textarea,
select,
button {
  width: 100%;
  margin-top: 6px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14px;
}

textarea {
  min-height: 110px;
  font-family: monospace;
}

button {
  background: var(--accent);
  color: white;
  border: none;
  cursor: pointer;
  font-weight: 700;
}

button:hover {
  opacity: 0.94;
}

form {
  display: grid;
  gap: 8px;
}

.guide ol {
  margin: 0;
  padding-left: 20px;
}

.guide li {
  margin: 6px 0;
  line-height: 1.5;
}

pre {
  white-space: pre-wrap;
  background: #f7fbff;
  border-radius: 8px;
  padding: 10px;
  min-height: 150px;
}

#artifact-list {
  padding-left: 16px;
}

.legacy-tools summary {
  cursor: pointer;
  font-weight: 700;
}

.legacy-tools[open] summary {
  margin-bottom: 12px;
}

.legacy-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}