:root{--navy-900:#0f1b2d;--navy-800:#16273f;--navy-700:#1f3450;--navy-100:#e8edf4;--text:#1a2332;--text-muted:#5a6478;--accent:#3b5fe0;--danger:#c0392b;--border:#d8dde6;--radius:4px}*{box-sizing:border-box}body{background:var(--navy-100);color:var(--text);margin:0;font-family:Noto Sans JP,-apple-system,sans-serif;line-height:1.7}button{cursor:pointer;border-radius:var(--radius);background:var(--accent);color:#fff;border:none;padding:10px 20px;font-family:inherit;font-size:15px}button:disabled{opacity:.5;cursor:not-allowed}button.secondary{color:var(--navy-800);border:1px solid var(--border);background:0 0}button.danger{background:var(--danger)}input,textarea{border:1px solid var(--border);border-radius:var(--radius);width:100%;padding:10px 12px;font-family:inherit;font-size:15px}label,.field-group{color:var(--text-muted);flex-direction:column;gap:6px;font-size:14px;display:flex}.login-page{justify-content:center;align-items:center;min-height:100vh;display:flex}.login-card{background:#fff;border-radius:8px;flex-direction:column;gap:16px;width:360px;padding:40px;display:flex;box-shadow:0 4px 24px #0f1b2d1f}.login-card h1{color:var(--navy-900);margin:0 0 8px;font-size:18px}.login-error{color:var(--danger);margin:0;font-size:14px}.top-bar{background:var(--navy-900);color:#fff;justify-content:space-between;align-items:center;padding:16px 24px;display:flex}.top-bar a{color:#fff;text-decoration:none}.container{max-width:880px;margin:0 auto;padding:32px 24px}.quick-actions{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin:24px 0;display:grid}.quick-action-card{border:1px solid var(--border);color:var(--text);background:#fff;border-radius:8px;padding:20px;text-decoration:none;display:block}.quick-action-card h3{color:var(--navy-900);margin:0 0 8px;font-size:16px}.quick-action-card p{color:var(--text-muted);margin:0;font-size:13px}.article-list{border:1px solid var(--border);background:#fff;border-radius:8px;overflow:hidden}.article-list a{border-bottom:1px solid var(--border);color:var(--text);padding:14px 18px;text-decoration:none;display:block}.article-list a:last-child{border-bottom:none}.article-list a:hover{background:var(--navy-100)}.editor-form{flex-direction:column;gap:16px;display:flex}.editor-form textarea{min-height:320px;font-family:ui-monospace,monospace;font-size:14px;line-height:1.6}.preview-frame{border:1px solid var(--border);background:#fff;border-radius:4px;width:100%;height:480px}.modal-overlay{z-index:10;background:#0f1b2d80;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal-card{background:#fff;border-radius:8px;flex-direction:column;gap:16px;width:420px;padding:28px;display:flex}.modal-actions{justify-content:flex-end;gap:12px;display:flex}.status-message{border-radius:4px;padding:12px 16px;font-size:14px}.status-message.success{color:#1e7e34;background:#e6f4ea}.status-message.error{color:var(--danger);background:#fdecea}.rich-text-editor{border:1px solid var(--border);border-radius:var(--radius);background:#fff;overflow:hidden}.rte-toolbar{background:var(--navy-100);border-bottom:1px solid var(--border);gap:6px;padding:8px;display:flex}.rte-toolbar button{color:var(--navy-800);border:1px solid var(--border);background:#fff;padding:6px 12px;font-size:13px}.rte-toolbar button:hover{background:var(--navy-100)}.rte-content{outline:none;padding:14px 16px;font-size:15px;line-height:1.9}.rte-content h2{color:var(--navy-900);margin:0 0 10px;font-size:20px}.rte-content p{margin:0 0 12px}.rte-content ul,.rte-content ol{margin:0 0 12px;padding-left:1.4em}.rte-content a{color:var(--accent)}.rte-content .biz-block{background:var(--navy-100);border-radius:var(--radius);margin:0 0 12px;padding:12px 16px}