:root{--bg: #f6f3ed;--card: #ffffff;--text: #33302b;--muted: #8d867a;--border: #e8e2d6;--primary: #e8590c;--primary-soft: #fdeee3;--green: #2f9e44;--green-soft: #e6f4ea;--danger: #c92a2a;--radius: 16px;--content-w: 480px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Hiragino Sans,Noto Sans JP,sans-serif;-webkit-font-smoothing:antialiased;touch-action:manipulation}#root{max-width:var(--content-w);margin:0 auto}.screen{padding:20px 16px calc(96px + var(--ad-height, 0px) + env(safe-area-inset-bottom));min-height:100dvh}.app-title{font-size:22px;font-weight:800;margin:0 0 16px}h2{margin:0}.muted{color:var(--muted);font-weight:400}.small{font-size:13px}.center{text-align:center}.card{background:var(--card);border-radius:var(--radius);padding:16px;margin-bottom:14px;box-shadow:0 1px 3px #3c321e0f}.total-card{display:flex;align-items:baseline;justify-content:space-between}.total-amount{font-size:28px;font-weight:800;font-variant-numeric:tabular-nums}.card-title{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:700;margin-bottom:6px}.card-title-amount{margin-left:auto;font-size:18px}.balance-row{display:flex;align-items:center;justify-content:space-between;padding:10px 0;font-size:15px}.balance-row+.balance-row{border-top:1px solid var(--border)}.balance-zero,.balance-zero b{color:var(--muted);font-weight:500}.hint-line{margin:10px 0 0}.balance-left{display:flex;align-items:center;gap:6px}.balance-right{display:flex;align-items:center;gap:8px;font-variant-numeric:tabular-nums}.dot{width:12px;height:12px;border-radius:50%;display:inline-block;flex-shrink:0}.dot-btn{width:18px;height:18px;border:none;padding:0;cursor:pointer}.btn{border:1px solid var(--border);background:var(--card);color:var(--text);border-radius:12px;padding:10px 16px;font-size:15px;font-weight:600;font-family:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.4}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn-small{padding:6px 12px;font-size:13px;border-radius:10px}.btn-block{display:block;width:100%;margin-top:8px}.btn-danger{background:var(--danger);border-color:var(--danger);color:#fff}.btn-danger-ghost{background:none;border:none;color:var(--danger)}.settle-btn{margin-left:4px}.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}.chip{border:1.5px solid var(--border);background:var(--card);color:var(--text);border-radius:999px;padding:8px 14px;font-size:14px;font-weight:600;font-family:inherit;display:inline-flex;align-items:center;gap:6px;cursor:pointer;-webkit-tap-highlight-color:transparent}.chip.on{background:var(--primary-soft);border-color:var(--primary);color:var(--primary)}.chip:active{transform:scale(.96)}.badge{font-size:12px;font-weight:700;border-radius:6px;padding:2px 7px}.badge-unpaid{background:var(--primary-soft);color:var(--primary)}.badge-paid{background:var(--green-soft);color:var(--green)}select.preset-select{width:100%;border:1.5px solid var(--border);border-radius:12px;padding:12px;font-size:16px;font-family:inherit;background:var(--card);color:var(--text);margin-bottom:8px}input[type=text],input[type=number],input[type=date]{width:100%;border:1.5px solid var(--border);border-radius:12px;padding:12px;font-size:16px;font-family:inherit;background:var(--card);color:var(--text)}input:focus{outline:2px solid var(--primary);outline-offset:-1px}.fab{position:fixed;bottom:calc(84px + var(--ad-height, 0px) + env(safe-area-inset-bottom));right:calc((100vw - min(100vw,var(--content-w)))/2 + 16px);width:58px;height:58px;border-radius:50%;border:none;background:var(--primary);color:#fff;font-size:30px;line-height:1;box-shadow:0 4px 14px #e8590c66;cursor:pointer;z-index:20}.fab:active{transform:scale(.94)}.tabbar{position:fixed;bottom:var(--ad-height, 0px);left:50%;transform:translate(-50%);width:min(100vw,var(--content-w));display:flex;background:var(--card);border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom);z-index:10}.tab{flex:1;border:none;background:none;color:var(--muted);font-size:11px;font-weight:700;font-family:inherit;padding:8px 0 10px;display:flex;flex-direction:column;align-items:center;gap:2px;cursor:pointer;-webkit-tap-highlight-color:transparent}.tab.on{color:var(--primary)}.tab-icon{font-size:20px}.overlay{position:fixed;inset:0;background:#28211773;z-index:30;display:flex;align-items:flex-end;justify-content:center}.sheet{background:var(--bg);width:min(100vw,var(--content-w));max-height:92dvh;overflow-y:auto;border-radius:20px 20px 0 0;padding:16px 16px calc(24px + var(--ad-height, 0px) + env(safe-area-inset-bottom))}.sheet-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.sheet-header h2{font-size:18px}.btn-close{border:none;background:var(--border);color:var(--muted);width:32px;height:32px;border-radius:50%;font-size:18px;cursor:pointer}.field{margin-bottom:16px}.field-label{display:block;font-size:13px;font-weight:700;color:var(--muted);margin-bottom:6px}.paid-toggle{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:600;margin-bottom:12px}.paid-toggle input{width:18px;height:18px}.dialog{background:var(--card);border-radius:var(--radius);padding:20px;width:min(calc(100vw - 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