:root {
  color-scheme: light;
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  margin: 0;
  color: #202124;
  background: #f8f9fa;
  line-height: 1.6;
}

header {
  background: linear-gradient(135deg, #1a73e8, #174ea6);
  color: #fff;
  padding: 48px 20px;
}

header .wrap {
  max-width: 760px;
  margin: 0 auto;
}

header h1 {
  margin: 0 0 8px;
  font-size: 32px;
}

header p {
  margin: 0;
  font-size: 16px;
  opacity: 0.9;
}

nav {
  background: #fff;
  border-bottom: 1px solid #e0e0e0;
}

nav .wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  gap: 20px;
}

nav a {
  color: #1a73e8;
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
}

nav a:hover { text-decoration: underline; }

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 20px 64px;
  background: #fff;
}

h2 {
  color: #1a73e8;
  font-size: 20px;
  margin-top: 32px;
}

h2:first-child { margin-top: 0; }

h3 {
  font-size: 16px;
  margin-top: 24px;
  margin-bottom: 6px;
}

h4 {
  font-size: 14px;
  margin-top: 0;
  margin-bottom: 4px;
  color: #1a73e8;
}

ol, ul { padding-left: 20px; }

a { color: #1a73e8; }

code {
  background: #f1f3f4;
  border-radius: 3px;
  padding: 1px 5px;
  font-size: 12.5px;
  font-family: "SFMono-Regular", Consolas, Menlo, monospace;
}

.toc {
  background: #f8f9fa;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 24px;
}

.toc p { margin: 0 0 8px; font-weight: 600; }
.toc ul { margin: 0; padding-left: 18px; }
.toc li { margin-bottom: 4px; }

.step {
  border-left: 3px solid #1a73e8;
  padding-left: 14px;
  margin: 14px 0;
}

footer {
  text-align: center;
  padding: 24px 20px 48px;
  font-size: 13px;
  color: #5f6368;
}

.updated {
  font-size: 13px;
  color: #5f6368;
}