:root{color-scheme:light dark;font-family:system-ui,-apple-system,Segoe UI,Roboto,Noto Sans KR,sans-serif;--bg: #0b0f17;--panel: #111827;--border: #1f2937;--text: #e5e7eb;--muted: #9ca3af;--accent: #2563eb}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}.layout{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{display:flex;flex-direction:column;gap:12px;padding:20px 14px;background:var(--panel);border-right:1px solid var(--border)}.brand{font-weight:700;font-size:15px;letter-spacing:.2px}.sidebar nav{display:flex;flex-direction:column;gap:4px;margin-top:8px}.nav{text-align:left;padding:8px 10px;border:1px solid transparent;border-radius:8px;background:transparent;color:var(--text);font-size:14px;cursor:pointer}.nav:hover{background:#ffffff0a}.nav.active{background:#2563eb2e;border-color:var(--accent)}.hint{margin-top:auto;font-size:11px;color:var(--muted);line-height:1.5}.content{padding:28px 32px}.content h1{margin:0 0 8px;font-size:22px}.muted{color:var(--muted)}.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:14px 16px;margin-top:14px}.card-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.json{margin:12px 0 0;padding:12px;background:#0b1220;border:1px solid var(--border);border-radius:8px;font-size:13px;line-height:1.5;overflow:auto}code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,Liberation Mono,monospace}.spec-table{width:100%;border-collapse:collapse;margin-top:12px;font-size:13px}.spec-table th,.spec-table td{text-align:left;padding:7px 10px;border-bottom:1px solid var(--border)}.spec-table th{color:var(--muted);font-weight:600}