:root{color-scheme:light dark;--bg: #f8fafc;--fg: #0f172a;--muted: #64748b;--ok: #15803d;--ng: #b91c1c;font-family:-apple-system,BlinkMacSystemFont,Hiragino Sans,Noto Sans JP,sans-serif}@media (prefers-color-scheme: dark){:root{--bg: #0f172a;--fg: #e2e8f0;--muted: #94a3b8;--ok: #4ade80;--ng: #f87171}}body{margin:0;background:var(--bg);color:var(--fg)}.app{padding:max(24px,env(safe-area-inset-top)) 16px 24px;max-width:640px;margin:0 auto}.status{color:var(--muted)}.status-ok{color:var(--ok)}.status-unreachable{color:var(--ng)}.auth{margin-top:24px}button{font:inherit;padding:12px 20px;border-radius:10px;border:1px solid var(--muted);background:transparent;color:var(--fg);min-height:44px}.panel{margin-top:32px}.idea-form{display:grid;gap:8px}input,select,textarea{font:inherit;font-size:16px;padding:10px 12px;border-radius:10px;border:1px solid var(--muted);background:transparent;color:var(--fg)}.idea-list{list-style:none;padding:0;margin:16px 0 0;display:grid;gap:12px}.idea{border:1px solid var(--muted);border-radius:12px;padding:12px}.idea-meta{display:flex;gap:6px;flex-wrap:wrap}.tag{font-size:12px;padding:2px 8px;border-radius:999px;border:1px solid var(--muted);color:var(--muted)}.idea-title{font-weight:600;margin:8px 0 4px}.idea-memo{margin:0;color:var(--muted);white-space:pre-wrap}button.link{border:none;padding:8px 0 0;min-height:auto;color:var(--muted);text-decoration:underline}