:root{--bg: #f6f7f9;--card: #ffffff;--text: #17181c;--muted: #6b7280;--border: #e2e4e9;--primary: #2563eb;--primary-text: #ffffff;--danger: #dc2626;--green: #059669;--green-bg: rgba(5, 150, 105, .12);--key-bg: #eceef2}@media(prefers-color-scheme:dark){:root{--bg: #101216;--card: #191c22;--text: #f2f3f5;--muted: #9aa1ac;--border: #2a2e37;--primary: #3b82f6;--key-bg: #232730}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Hiragino Sans,Noto Sans JP,sans-serif;-webkit-font-smoothing:antialiased}h1{font-size:17px;margin:0}h2{font-size:16px;margin:0 0 4px;text-align:center}code{background:var(--key-bg);padding:1px 5px;border-radius:4px;font-size:.9em}.shell{max-width:480px;margin:0 auto;padding:calc(env(safe-area-inset-top) + 8px) 14px calc(env(safe-area-inset-bottom) + 24px)}.page-center{min-height:100dvh;display:flex;align-items:flex-start;justify-content:center;padding:48px 16px}.topbar{display:flex;align-items:center;justify-content:space-between;padding:8px 0}.topbar-actions{display:flex;gap:4px}.tabs{display:grid;grid-template-columns:1fr 1fr;background:var(--key-bg);border-radius:10px;padding:3px;margin:8px 0 12px}.tab{border:0;background:transparent;color:var(--muted);padding:8px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer}.tab.active{background:var(--card);color:var(--text);box-shadow:0 1px 3px #0000001f}.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:16px;width:100%;max-width:420px}.amount-display{font-size:44px;font-weight:800;text-align:center;margin:6px 0 10px;font-variant-numeric:tabular-nums;letter-spacing:-.5px}.memo-input,label input{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:var(--bg);color:var(--text);font-size:15px;margin-bottom:12px}label{display:block;font-size:13px;color:var(--muted);margin-bottom:4px}label input{margin-top:4px}.keypad{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.key{height:56px;border:0;border-radius:10px;background:var(--key-bg);color:var(--text);font-size:20px;font-weight:700;cursor:pointer}.key:active{filter:brightness(.9)}.row2{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:12px}.btn{border:0;border-radius:10px;padding:9px 12px;font-size:14px;font-weight:600;cursor:pointer;text-align:center;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:6px}.btn:disabled{opacity:.5;cursor:default}.btn-primary{background:var(--primary);color:var(--primary-text)}.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}.btn-ghost{background:transparent;color:var(--muted)}.btn-danger-ghost{background:transparent;color:var(--danger)}.btn-lg{padding:13px 14px;font-size:15px}.btn-sm{padding:6px 10px;font-size:13px}.wide{width:100%;margin-top:8px}.muted{color:var(--muted)}.small{font-size:12.5px}.center{text-align:center}.error{color:var(--danger);font-size:13px}.notice{background:var(--key-bg);border-radius:10px;padding:8px 12px;font-size:13px;margin:8px 0}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;display:flex;align-items:center;justify-content:center;padding:16px;z-index:50}.dialog{position:relative;background:var(--card);border:1px solid var(--border);border-radius:16px;padding:20px;width:100%;max-width:380px;max-height:calc(100dvh - 32px);overflow-y:auto}.dialog-close{position:absolute;top:10px;right:10px;border:0;background:transparent;color:var(--muted);font-size:20px;cursor:pointer;line-height:1}.qr-box{background:#fff;border-radius:12px;padding:10px;margin:10px auto;width:min(280px,100%);display:flex;align-items:center;justify-content:center}.qr-box img{width:100%;height:auto;display:block}.paid-panel{display:flex;flex-direction:column;align-items:center;gap:8px;padding:10px 0 4px;text-align:center}.paid-panel p{margin:0}.paid-check{width:64px;height:64px;border-radius:50%;background:var(--green-bg);color:var(--green);font-size:34px;display:flex;align-items:center;justify-content:center}.canceled-x{width:64px;height:64px;border-radius:50%;background:var(--key-bg);color:var(--muted);font-size:34px;display:flex;align-items:center;justify-content:center}.history{display:flex;flex-direction:column;gap:10px}.history .total{font-size:24px;font-weight:800;margin:2px 0 0;font-variant-numeric:tabular-nums}.history-row{display:flex;align-items:center;gap:10px;padding:12px 14px}.history-row p{margin:0}.history-main{flex:1;min-width:0}.badge{font-size:11.5px;font-weight:600;padding:3px 8px;border-radius:999px;white-space:nowrap}.badge-paid{background:var(--green-bg);color:var(--green)}.badge-pending{border:1px solid var(--border);color:var(--muted)}.badge-canceled{background:var(--key-bg);color:var(--muted)}.login-card{margin-top:24px}.login-card h1{text-align:center;font-size:20px}.login-card .muted{text-align:center;margin:4px 0 16px}.login-card .btn{width:100%;margin-top:4px}.pay-card{margin-top:12px}.pay-card h1{text-align:center}.pay-actions{margin-top:14px;display:flex;flex-direction:column;gap:4px}.cash-hint{border:1px dashed var(--border);border-radius:10px;padding:10px;text-align:center;color:var(--muted);font-size:13.5px;margin-top:8px}.spinner{width:28px;height:28px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite;margin:12px auto}@keyframes spin{to{transform:rotate(360deg)}}