:root { --ink:#1e2a4a; --bg:#f5f0e8; --card:#fff; --accent:#4a6da7; }
* { box-sizing: border-box; }
body { font-family: "Hiragino Sans", "Yu Gothic", sans-serif; background: var(--bg);
  color: #222; line-height: 1.8; max-width: 860px; margin: 0 auto; padding: 16px; }
h1, h2, h3 { color: var(--ink); line-height: 1.4; }
h1 { font-size: 1.5rem; border-bottom: 3px solid var(--ink); padding-bottom: 8px; }
h2 { font-size: 1.2rem; border-left: 5px solid var(--accent); padding-left: 10px; margin-top: 2em; }
h3 { font-size: 1.05rem; }
table { border-collapse: collapse; width: 100%; font-size: .85rem; display: block; overflow-x: auto; }
th, td { border: 1px solid #ccc; padding: 6px 8px; text-align: left; vertical-align: top; }
th { background: var(--ink); color: #fff; }
code { background: #eee8dc; padding: 1px 5px; border-radius: 4px; font-size: .85em; word-break: break-all; }
pre { background: #2b2b2b; color: #eee; padding: 12px; border-radius: 8px; overflow-x: auto; }
pre code { background: none; color: inherit; }
blockquote { border-left: 4px solid var(--accent); margin: 1em 0; padding: 4px 14px; background: #fff; color: #444; }
a { color: var(--accent); }
img { max-width: 100%; }
.top-nav { margin-bottom: 16px; font-size: .9rem; }
.card { background: var(--card); border-radius: 12px; padding: 16px 18px; margin: 14px 0;
  box-shadow: 0 2px 6px rgba(30,42,74,.08); }
.card a.doc-link { font-weight: bold; font-size: 1.05rem; text-decoration: none; }
.card p { margin: 6px 0 0; font-size: .88rem; color: #555; }