:root{--bg:#fff;--fg:#1f2328;--muted:#6b7280;--line:#e5e7eb;--side:#f6f8fa;--accent:#1f6feb;--danger:#c62828;--ok:#2e7d32}*{box-sizing:border-box;margin:0;padding:0}html,body{min-height:100%}body{background:var(--bg);color:var(--fg);font-family:system-ui,-apple-system,Hiragino Sans,Noto Sans JP,sans-serif;font-size:14px;line-height:1.6}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}h1{margin-bottom:16px;font-size:20px}h2{margin:24px 0 8px;font-size:16px}code{word-break:break-all;font-size:12px}.admin-shell{grid-template-columns:200px 1fr;min-height:100vh;display:grid}.admin-nav{background:var(--side);border-right:1px solid var(--line);padding:16px 12px}.admin-nav .brand{margin-bottom:12px;font-weight:700}.admin-nav ul{margin-bottom:16px;list-style:none}.admin-nav li a{color:var(--fg);border-radius:6px;padding:6px 8px;display:block}.admin-nav li a:hover{background:#eaeef2;text-decoration:none}.admin-nav .who{color:var(--muted);word-break:break-all;margin-bottom:8px;font-size:12px}.admin-main{max-width:1200px;padding:24px 32px}table.list{border-collapse:collapse;width:100%;margin:8px 0 16px}table.list th,table.list td{border-bottom:1px solid var(--line);text-align:left;vertical-align:top;padding:6px 8px}table.list th{background:var(--side);white-space:nowrap;font-weight:600}.form{gap:12px;max-width:720px;margin:8px 0 16px;display:grid}.form label{gap:4px;font-weight:600;display:grid}.form input[type=text],.form input[type=email],.form input[type=password],.form input[type=url],.form input[type=number],.form input[type=datetime-local],.form select,.form textarea{font:inherit;border:1px solid #c9d1d9;border-radius:6px;padding:6px 8px;font-weight:400}.form textarea{min-height:120px}.form .check{align-items:center;gap:8px;font-weight:400;display:flex}.row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.btn{font:inherit;cursor:pointer;background:#fff;border:1px solid #c9d1d9;border-radius:6px;padding:6px 14px}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.danger{background:var(--danger);border-color:var(--danger);color:#fff}.btn:disabled{opacity:.5;cursor:default}.error{color:var(--danger)}.done{color:var(--ok)}.muted{color:var(--muted)}.note{background:#fff8e1;border:1px solid #ffe082;border-radius:6px;margin:8px 0;padding:8px 12px}.badge{background:#eef2f6;border-radius:10px;padding:0 8px;font-size:12px;display:inline-block}.badge.red{color:var(--danger);background:#fdecea}.badge.green{color:var(--ok);background:#e8f5e9}.cards{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;display:grid}.card{border:1px solid var(--line);border-radius:8px;padding:12px}.card b{font-size:24px;display:block}.tabs{gap:16px;margin-bottom:12px;display:flex}.tabs a.on{font-weight:700;text-decoration:underline}.pager{gap:16px;margin:8px 0;display:flex}.editor{border:1px solid var(--line);background:var(--bg);border-radius:6px}.toolbar{border-bottom:1px solid var(--line);background:var(--side);flex-wrap:wrap;align-items:center;gap:4px;min-height:41px;padding:6px;display:flex}.toolbar .tb{font:inherit;color:var(--fg);cursor:pointer;background:#fff;border:1px solid #c9d1d9;border-radius:4px;padding:3px 8px;font-size:13px}.toolbar .tb.on{background:var(--accent);border-color:var(--accent);color:#fff}.toolbar .tb:disabled{opacity:.4;cursor:default}.toolbar .sep{background:var(--line);align-self:stretch;width:1px;margin:2px 4px}.editor-body{outline:none;min-height:480px;padding:12px 16px}.markdown{line-height:1.8}.markdown a{color:var(--accent);text-decoration:underline}.markdown hr{border:0;border-top:1px solid var(--line);margin:16px 0}.markdown h1,.markdown h2,.markdown h3{margin:20px 0 8px}.markdown p,.markdown ul,.markdown ol,.markdown table,.markdown blockquote{margin:8px 0}.markdown ul,.markdown ol{padding-left:24px}.markdown table{border-collapse:collapse}.markdown th,.markdown td{border:1px solid var(--line);padding:4px 8px}.markdown blockquote{border-left:3px solid var(--line);color:var(--muted);padding-left:12px}.legal-page{max-width:760px;margin:0 auto;padding:24px 16px 64px}.basics-form{max-width:none}.basics-fields{gap:12px;max-width:720px;display:grid}.basics-body-field{gap:8px;display:grid}.basics-body-field h2{margin:8px 0 0}.admin-main:has(.basics-split){max-width:none}.basics-split{grid-template-columns:minmax(480px,1fr) minmax(0,1.3fr);align-items:start;gap:24px;display:grid}.basics-split-preview{border:1px solid var(--line);background:#fff;max-height:calc(100vh - 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