:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #667085;
  --line: #d9e2f2;
  --primary: #3b82f6;
  --primary-soft: #e8f1ff;
  --shadow: 0 18px 44px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family:
    'SF Pro Display',
    'PingFang SC',
    'Microsoft YaHei',
    system-ui,
    -apple-system,
    sans-serif;
  background: linear-gradient(180deg, #eef4ff 0%, var(--bg) 220px);
  color: var(--text);
}

a {
  color: var(--primary);
  text-decoration: none;
}

.doc-shell {
  max-width: 1360px;
  margin: 0 auto;
  padding: 32px 24px 20px;
  display: flex;
  gap: 24px;
  justify-content: space-between;
  align-items: flex-start;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 14px;
  font-size: 14px;
}

.doc-shell h1 {
  margin: 0;
  font-size: 32px;
}

.doc-shell p {
  margin: 10px 0 0;
  max-width: 860px;
  color: var(--muted);
  line-height: 1.65;
}

.doc-meta {
  display: grid;
  gap: 12px;
  min-width: 280px;
}

.meta-item {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(217, 226, 242, 0.9);
  border-radius: 18px;
  padding: 14px 16px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.meta-item span {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 8px;
}

.meta-item code,
.meta-item strong {
  font-size: 14px;
}

.doc-layout {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 24px 48px;
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 24px;
}

.doc-aside {
  position: sticky;
  top: 24px;
  align-self: start;
  display: grid;
  gap: 16px;
}

.aside-card,
.doc-section {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
}

.aside-card {
  padding: 20px;
}

.aside-card h2 {
  margin: 0 0 12px;
  font-size: 17px;
}

.aside-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.quick-links {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 10px;
}

.quick-links li {
  color: var(--muted);
  line-height: 1.5;
}

.doc-content {
  display: grid;
  gap: 18px;
}

.doc-section {
  padding: 24px;
}

.doc-section h2 {
  margin: 0 0 14px;
  font-size: 24px;
}

.doc-section p {
  margin: 0 0 14px;
  color: var(--muted);
  line-height: 1.7;
}

.doc-section ul {
  margin: 0 0 14px;
  padding-left: 20px;
  display: grid;
  gap: 8px;
}

.doc-section li {
  line-height: 1.7;
}

.doc-callout {
  margin: 0 0 14px;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(59, 130, 246, 0.16);
  background: var(--primary-soft);
  color: #1d4ed8;
  line-height: 1.65;
}

.doc-callout.warn {
  border-color: rgba(245, 158, 11, 0.2);
  background: #fff8e6;
  color: #92400e;
}

.doc-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-bottom: 14px;
}

.mini-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 16px;
  background: #fbfdff;
}

.mini-card strong {
  display: block;
  margin-bottom: 8px;
}

.mini-card p {
  margin: 0;
  font-size: 14px;
}

pre {
  margin: 0 0 14px;
  padding: 16px 18px;
  border-radius: 18px;
  background: #0f172a;
  color: #e2e8f0;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.6;
}

code {
  font-family:
    'SFMono-Regular',
    'JetBrains Mono',
    'Cascadia Code',
    'Source Code Pro',
    ui-monospace,
    monospace;
}

.doc-footer-link {
  display: inline-flex;
  margin-top: 4px;
  font-size: 14px;
}

@media (max-width: 1024px) {
  .doc-shell,
  .doc-layout {
    display: block;
  }

  .doc-meta {
    margin-top: 18px;
  }

  .doc-aside {
    position: static;
    margin-bottom: 18px;
  }
}