:root{--bg: #faf8f3;--card: #ffffff;--line: #e7e1d6;--text: #2c2622;--muted: #8a8076;--accent: #3a7ab0;--pos: #2f7a4f;--neg: #d92d20;font-family:system-ui,-apple-system,Segoe UI,Roboto,Hiragino Sans,Noto Sans JP,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);line-height:1.6}#app{max-width:760px;margin:0 auto;padding:16px 16px 64px}h1{font-size:1.4rem;margin:8px 0 2px}h1 .brand{font-size:.8rem;color:var(--muted);font-weight:400;letter-spacing:.04em}.sub{color:var(--muted);font-size:.82rem;margin:0 0 16px}.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:16px}.card h2{font-size:1rem;margin:0 0 12px}.card h3{font-size:.9rem;margin:16px 0 8px}.card.result{border-color:var(--accent)}.muted{color:var(--muted);font-size:.82rem}input,select,textarea{font:inherit;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--text)}textarea{width:100%;resize:vertical}button{font:inherit;padding:8px 12px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--text);cursor:pointer}button:hover{background:#f3efe7}button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button.primary:hover{filter:brightness(1.05)}button.danger{color:var(--neg)}button:disabled{opacity:.5;cursor:not-allowed}.inline{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:8px}.row input[type=text],.row input[type=number],.row input[type=password]{flex:1 1 120px;min-width:0}.actions{display:flex;gap:8px;flex-wrap:wrap}.grouprow{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.grouprow label{display:flex;gap:6px;align-items:center}.members{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px}.chip{background:#f3efe7;border:1px solid var(--line);border-radius:999px;padding:4px 10px;font-size:.85rem;display:inline-flex;align-items:center;gap:4px}.chip button{border:none;background:none;padding:0 2px;color:var(--muted);font-size:1rem;line-height:1}.chip button:hover{color:var(--neg);background:none}.expense-form .parts{margin:6px 0 10px;font-size:.85rem;color:var(--muted)}.check{display:inline-flex;align-items:center;gap:4px;margin-right:10px;color:var(--text)}.expenses{list-style:none;padding:0;margin:12px 0 0}.expenses li{border-top:1px solid var(--line);padding:10px 0}.ex-main{display:flex;justify-content:space-between;font-weight:600}.ex-actions{margin-top:6px;display:flex;gap:8px}.ex-actions button{padding:4px 10px;font-size:.8rem}table.balances{width:100%;border-collapse:collapse;font-size:.88rem}table.balances th,table.balances td{text-align:left;padding:6px 4px;border-bottom:1px solid var(--line)}.num{text-align:right;font-variant-numeric:tabular-nums}.pos{color:var(--pos)}.neg{color:var(--neg)}.zero{color:var(--muted)}.tag{font-size:.7rem;color:var(--muted)}ul.settle{list-style:none;padding:0;margin:0}ul.settle li{padding:8px 10px;background:#f3efe7;border-radius:8px;margin-bottom:6px;display:flex;justify-content:space-between;align-items:center}ul.settle .amt{font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums}.llm{margin-top:12px;padding-top:12px;border-top:1px solid var(--line)}footer{color:var(--muted);font-size:.75rem;text-align:center;margin-top:24px}