:root{--bg: #fafafa;--card: #fff;--text: #111;--muted: #666;--border: #e5e5e5;--accent: #2563eb;--cheapest: #16a34a;--cheapest-bg: #dcfce7}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Hiragino Kaku Gothic ProN,Yu Gothic,sans-serif;font-size:16px;line-height:1.5}.app-shell{max-width:480px;margin:0 auto;min-height:100vh;background:var(--bg);padding-bottom:80px;position:relative}.app-header{background:var(--card);padding:12px 16px;border-bottom:1px solid var(--border);font-weight:600;font-size:18px;position:sticky;top:0;z-index:10}main{padding:16px}h1,h2,h3{margin:0 0 12px}h2{font-size:16px;color:var(--muted);font-weight:600;margin-top:20px}h1{font-size:22px}.card{background:var(--card);border-radius:8px;box-shadow:0 1px 2px #0000000d;padding:12px 14px;margin-bottom:8px;display:block;color:inherit;text-decoration:none}.row{display:flex;align-items:center;justify-content:space-between;gap:8px}.chip{display:inline-block;background:#f3f4f6;color:var(--muted);border-radius:12px;padding:2px 10px;font-size:13px}.badge-cheapest{background:var(--cheapest);color:#fff;border-radius:4px;font-size:11px;padding:2px 6px;margin-left:6px;font-weight:600}.price-row-cheapest{background:var(--cheapest-bg)}.price{font-weight:700;font-size:18px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 16px;border-radius:8px;border:none;background:var(--accent);color:#fff;font-size:16px;font-weight:600;cursor:pointer;text-decoration:none;width:100%}.btn-secondary{background:#fff;color:var(--accent);border:1px solid var(--accent)}.btn-danger{background:#fff;color:#dc2626;border:1px solid #fca5a5}.btn-sm{min-height:40px;padding:0 10px;font-size:14px;width:auto}.icon-btn{background:none;border:none;cursor:pointer;padding:8px;min-width:40px;min-height:40px;font-size:16px;color:var(--muted);border-radius:6px}.icon-btn.danger{color:#dc2626}.input,.textarea,select{width:100%;padding:12px;border:1px solid var(--border);border-radius:8px;font-size:16px;background:#fff;font-family:inherit}.textarea{min-height:80px;resize:vertical}label{display:block;margin-bottom:6px;font-size:14px;color:var(--muted);font-weight:600}.field{margin-bottom:14px}.fab{position:fixed;bottom:84px;right:calc(50% - 224px);width:56px;height:56px;border-radius:28px;background:var(--accent);color:#fff;border:none;font-size:28px;box-shadow:0 4px 12px #0003;display:flex;align-items:center;justify-content:center;text-decoration:none;z-index:20}@media (max-width: 512px){.fab{right:16px}}.bottom-nav{position:fixed;bottom:0;left:50%;transform:translate(-50%);width:100%;max-width:480px;background:#fff;border-top:1px solid var(--border);display:flex;z-index:15}.bottom-nav a{flex:1;padding:14px 0;text-align:center;text-decoration:none;color:var(--muted);font-size:13px}.bottom-nav a.active{color:var(--accent);font-weight:600}.fav-btn{background:none;border:none;font-size:24px;cursor:pointer;padding:4px 8px;color:#d4d4d4}.fav-btn.on{color:#facc15}.muted{color:var(--muted);font-size:13px}.submit-fixed{position:fixed;left:50%;transform:translate(-50%);bottom:72px;width:100%;max-width:480px;padding:12px 16px;background:var(--bg);z-index:12}details summary{cursor:pointer;padding:8px 0;font-weight:600}.search-input{width:100%;padding:12px;border:1px solid var(--border);border-radius:8px;font-size:16px}.empty{text-align:center;color:var(--muted);padding:24px 12px;font-size:14px}