:root{--bg:#f6f7f9;--card:#fff;--border:#e2e5ea;--fg:#1b1f24;--muted:#6b7280;--primary:#2b6cb0;--primary-fg:#fff;--danger:#c53030;--ok:#2f855a}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--fg);margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Hiragino Kaku Gothic ProN,Noto Sans JP,sans-serif;line-height:1.6}.container{max-width:720px;margin:0 auto;padding:40px 20px}h1{margin-bottom:1.25rem;font-size:1.5rem}h2{margin:0 0 .75rem;font-size:1.1rem}.card{background:var(--card);border:1px solid var(--border);border-radius:10px;margin-bottom:20px;padding:20px}.muted{color:var(--muted);font-size:.9rem}.button{background:var(--primary);color:var(--primary-fg);cursor:pointer;border:none;border-radius:8px;padding:9px 16px;font-size:.95rem;text-decoration:none;display:inline-block}.button:disabled{opacity:.5;cursor:not-allowed}.button.secondary{color:var(--primary);border:1px solid var(--primary);background:0 0}.button.danger{color:var(--danger);border:1px solid var(--danger);background:0 0}.link{color:var(--muted);cursor:pointer;background:0 0;border:none;padding:0;font-size:.9rem;text-decoration:underline}input[type=text],input[type=password]{border:1px solid var(--border);border-radius:8px;width:100%;padding:9px 12px;font-family:inherit;font-size:.95rem}pre{color:#e2e8f0;background:#0f172a;border-radius:8px;padding:12px;font-size:.85rem;overflow-x:auto}code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.row{align-items:center;gap:8px;display:flex}.error{color:var(--danger)}.success{color:var(--ok)}.badge{border-radius:999px;padding:2px 10px;font-size:.8rem;font-weight:600;display:inline-block}.badge.on{color:var(--ok);background:#e6fffa}.badge.off{color:var(--danger);background:#fff5f5}