:root{--bg: #f4f5f7;--panel: #ffffff;--border: #e2e5ea;--text: #1f2530;--muted: #6b7280;--primary: #2563eb;--primary-hover: #1d4ed8;--primary-soft: #eef2ff;--danger: #dc2626;--danger-soft: #fef2f2;--success: #16a34a;--radius: 8px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:-apple-system,Apple SD Gothic Neo,Noto Sans KR,sans-serif;font-size:14px;line-height:1.5;color:var(--text);background:var(--bg)}h1{font-size:20px;margin:0;display:flex;align-items:center;gap:10px}h2{margin:0}a{color:var(--primary);text-decoration:none}code{background:#f1f3f5;border-radius:4px;padding:1px 5px;font-size:12px}.layout{display:flex;min-height:100vh}.sidebar{width:180px;flex-shrink:0;background:var(--panel);border-right:1px solid var(--border);padding:20px 12px;position:sticky;top:0;height:100vh}.brand{font-size:17px;font-weight:700;color:var(--primary);padding:0 10px 18px}.brand span{display:block;font-size:12px;font-weight:500;color:var(--muted)}.sidebar 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760px){.form-grid,.two-col{grid-template-columns:1fr}.sidebar{width:140px}}