:root{--bg: #f3f4f1;--panel: #ffffff;--ink: #1d2a2a;--ink-sub: #4a5857;--line: #d3d8d3;--accent: #2c5a4e;--accent-ink: #ffffff;--warn: #8a2d1f;--warn-bg: #fbeceb;--note: #7a5b00;--note-bg: #fbf3d9;--ok: #1f5a33;--ok-bg: #e7f3ea;font-family:Hiragino Sans,Noto Sans JP,Yu Gothic,Meiryo,system-ui,sans-serif;font-size:15px;line-height:1.6;color:var(--ink)}*{box-sizing:border-box}html,body{margin:0;background:var(--bg)}a{color:var(--accent)}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #1d6fb8;outline-offset:2px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.muted{color:var(--ink-sub)}.small{font-size:12px}.shell{min-height:100vh;display:flex;flex-direction:column}.demo-banner{display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center;justify-content:space-between;padding:6px 16px;background:var(--note-bg);color:var(--note);border-bottom:1px solid #e6d9a6;font-weight:600;font-size:13px}.topbar{display:flex;flex-wrap:wrap;gap:4px 20px;align-items:baseline;padding:10px 16px;background:var(--accent);color:var(--accent-ink)}.topbar-name{font-size:18px}.topbar-date{font-size:13px;opacity:.92}.body{display:flex;flex:1;min-width:0}.nav{width:196px;flex:none;padding:16px 0;background:#e8ebe7;border-right:1px solid var(--line);display:flex;flex-direction:column}.nav a{padding:10px 20px;color:var(--ink);text-decoration:none;border-left:4px solid transparent}.nav a:hover{background:#dde2dd}.nav a[aria-current=page]{background:var(--panel);border-left-color:var(--accent);font-weight:700}.main{flex:1;min-width:0;padding:20px 24px 40px;max-width:1100px;overflow-wrap:anywhere}h1{font-size:22px;margin:0 0 12px;line-height:1.3}h2{font-size:16px;margin:0 0 10px}.lead{margin:0 0 12px;color:var(--ink-sub)}.crumb{margin:0 0 4px;font-size:13px;color:var(--ink-sub)}.count{margin:8px 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