* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: #111827; line-height: 1.7; background: #ffffff; }
.page-wrap { max-width: 760px; margin: 0 auto; padding: 40px 24px 80px; }
.site-header { display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; border-bottom: 1px solid #e5e7eb; margin-bottom: 48px; }
.site-logo { font-size: 18px; font-weight: 700; color: #6366f1; text-decoration: none; }
.back-link { font-size: 13px; color: #6366f1; text-decoration: none; }
.back-link:hover { text-decoration: underline; }
h1 { font-size: 32px; font-weight: 700; color: #111827; margin-bottom: 8px; line-height: 1.25; }
.doc-meta { font-size: 13px; color: #6b7280; margin-bottom: 40px; }
h2 { font-size: 20px; font-weight: 600; color: #111827; margin: 40px 0 12px;
  padding-top: 8px; border-top: 1px solid #f3f4f6; }
h3 { font-size: 16px; font-weight: 600; color: #111827; margin: 24px 0 8px; }
p { margin-bottom: 16px; font-size: 15px; color: #374151; }
ul, ol { padding-left: 20px; margin-bottom: 16px; }
li { font-size: 15px; color: #374151; margin-bottom: 8px; line-height: 1.6; }
strong { font-weight: 600; color: #111827; }
a { color: #6366f1; text-decoration: none; }
a:hover { text-decoration: underline; }
.toc { background: #f9fafb; border: 1px solid #e5e7eb; border-radius: 12px;
  padding: 20px 24px; margin-bottom: 40px; }
.toc > p { font-size: 13px; font-weight: 600; color: #6b7280; text-transform: uppercase;
  letter-spacing: 0.05em; margin-bottom: 10px; }
table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14px; }
th { text-align: left; padding: 10px 12px; background: #f9fafb;
  border: 1px solid #e5e7eb; font-weight: 600; color: #374151; }
td { padding: 10px 12px; border: 1px solid #e5e7eb; color: #374151; vertical-align: top; }
.highlight-box { background: #eef2ff; border: 1px solid #c7d2fe; border-radius: 10px;
  padding: 16px 20px; margin: 20px 0; }
.highlight-box p { color: #3730a3; margin-bottom: 0; font-size: 14px; }
.site-footer { border-top: 1px solid #e5e7eb; margin-top: 64px; padding: 24px;
  text-align: center; font-size: 13px; color: #9ca3af; }
.site-footer a { color: #6366f1; }