:root{--bg:#f4f5f7;--card:#fff;--text:#1c1f24;--muted:#6b7280;--border:#dde1e6;--primary:#1f6feb;--primary-hover:#1858c4;--danger:#c62828;--ok-bg:#e8f5e9;--ok-text:#1b5e20;--radius:10px;color:var(--text);background:var(--bg);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{background:var(--bg);margin:0}h1{margin:0;font-size:1.35rem}p{line-height:1.5}code{background:#eef0f3;border-radius:4px;padding:1px 5px}.muted{color:var(--muted)}.strong{font-weight:600}.error{color:var(--danger);margin:8px 0 0}.notice{background:var(--ok-bg);color:var(--ok-text);border-radius:var(--radius);padding:10px 14px}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px}input,select{font:inherit;border:1px solid var(--border);width:100%;color:var(--text);background:#fff;border-radius:8px;padding:10px 12px}input:focus,select:focus{outline:2px solid var(--primary);outline-offset:-1px;border-color:#0000}label{color:var(--muted);flex-direction:column;gap:6px;font-size:.85rem;display:flex}.btn{font:inherit;border:1px solid var(--border);color:var(--text);cursor:pointer;background:#fff;border-radius:8px;min-height:44px;padding:10px 18px;font-weight:600}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn.primary:hover:not(:disabled){background:var(--primary-hover)}.btn.big{padding:14px 28px;font-size:1.05rem}.link{color:var(--primary);cursor:pointer;font:inherit;background:0 0;border:none;padding:0;text-decoration:underline}.icon-btn{color:var(--muted);cursor:pointer;background:0 0;border:none;border-radius:6px;padding:8px;font-size:1rem}.icon-btn:hover{color:var(--danger);background:#fdecea}.pill{color:var(--primary);background:#eef3fe;border-radius:999px;padding:4px 10px;font-size:.85rem;font-weight:600}.setup{place-items:center;min-height:100vh;padding:16px;display:grid}.setup-card{text-align:center;width:100%;max-width:440px;padding:32px 24px}.setup-card h1{margin-bottom:8px}.stack{flex-direction:column;gap:10px;display:flex}.cancel{margin-top:16px}.app{flex-direction:column;gap:14px;max-width:960px;margin:0 auto;padding:16px;display:flex}.topbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;display:flex}.topbar-info{flex-wrap:wrap;align-items:center;gap:12px;font-size:.95rem;display:flex}.settings{grid-template-columns:1fr 160px;gap:12px;display:grid}.add-form{grid-template-columns:1fr 120px 150px auto;align-items:end;gap:12px;display:grid}.add-form .full{grid-column:1/-1}.bill{padding:0;overflow-x:auto}table{border-collapse:collapse;width:100%}th,td{text-align:left;border-bottom:1px solid var(--border);padding:8px 12px}th{text-transform:uppercase;letter-spacing:.03em;color:var(--muted);background:#fafbfc;font-size:.8rem}td.num,th.num{text-align:right}td.empty{text-align:center;color:var(--muted);padding:32px}.cell{background:0 0;border-color:#0000;min-width:70px;padding:6px 8px}.cell:hover{border-color:var(--border)}.cell.num{text-align:right;max-width:110px;margin-left:auto;display:block}tfoot td{border-bottom:none}.grand-label{font-weight:600}.grand{font-size:1.3rem;font-weight:700}.actions{justify-content:flex-end;gap:10px;display:flex}@media (width<=640px){.settings{grid-template-columns:1fr}.add-form{grid-template-columns:1fr 1fr}.add-form .grow,.add-form .btn{grid-column:1/-1}th,td{padding:6px 8px}.actions .btn.big{flex:1}}.steps{text-align:left}.steps ol{margin:0 0 12px;padding-left:20px;line-height:1.6}.steps code{word-break:break-all}