:root{--bg:#f3f6fa;--surface:#fff;--ink:#23314b;--muted:#607088;--line:#dce4ee;--blue:#315acb;--blue-soft:#eaf0ff;--green:#177366;--red:#b64747;--violet:#8162bd;--amber:#a57027;--shadow:0 10px 25px #1b31520d;font:16px/1.55 "Noto Sans TC","PingFang TC","Microsoft JhengHei",sans-serif;color:var(--ink);background:var(--bg)}
@media(prefers-color-scheme:dark){:root{--bg:#141c2b;--surface:#1c283b;--ink:#e8edf6;--muted:#abb9cf;--line:#35445b;--blue:#a9c1ff;--blue-soft:#293b62;--green:#8bd4c5;--red:#ffadad;--violet:#c0a8f1;--amber:#f0c77f;--shadow:none}}
*{box-sizing:border-box} body{margin:0;background:var(--bg)} button,input{font:inherit} button{cursor:pointer;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:8px;min-height:44px;padding:8px 13px}button:hover{background:var(--blue-soft)}button:focus-visible,input:focus-visible{outline:3px solid var(--blue);outline-offset:2px}button:disabled{opacity:.5;cursor:not-allowed}.is-hidden{display:none!important}.muted,.panel-head span,.helper-text,small{color:var(--muted);font-size:.78rem}.site-header{min-height:78px;padding:14px max(20px,calc((100vw - 1280px)/2));display:flex;align-items:center;justify-content:space-between;gap:18px;border-bottom:1px solid var(--line);background:var(--surface)}.brand{color:inherit;text-decoration:none;display:flex;align-items:center;gap:12px}.brand strong{display:block;font-size:1.18rem;letter-spacing:.04em}.brand small{display:block}.brand-mark{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:var(--blue-soft);color:var(--blue);font-size:26px}.month-picker{display:flex;align-items:center;gap:10px;white-space:nowrap}.icon-button{width:44px;padding:0;font-size:28px;line-height:1}.quiet-button{background:transparent}.page-shell{max-width:1280px;margin:auto;padding:24px 28px 36px}.state-panel{margin:10vh auto;text-align:center}.state-panel button{margin-top:8px}.summary{display:grid;grid-template-columns:1.35fr 1fr 1fr;gap:24px;margin:0 0 20px;padding:4px 0 10px}.summary article+article{padding-left:24px;border-left:1px solid var(--line)}.summary p{margin:0;color:var(--muted);font-size:.82rem}.sum{display:block;margin:3px 0;font-size:1.85rem;font-weight:600;letter-spacing:-.04em;font-variant-numeric:tabular-nums}.sum.expense{color:var(--blue)}.sum.income{color:var(--green)}.panel{min-width:0;padding:20px;border:1px solid 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small{overflow:visible;white-space:nowrap;font-size:.68rem;font-variant-numeric:tabular-nums}.breadcrumb{min-height:18px;display:flex;align-items:center;gap:4px;flex-wrap:wrap;font-size:.75rem}.breadcrumb button{min-height:auto;border:0;background:transparent;padding:0;color:var(--blue);text-decoration:underline}.detail-total{margin:4px 0 10px;font-size:1.55rem;font-variant-numeric:tabular-nums}.transactions{min-height:225px}.transaction{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}.transaction:last-child{border:0}.transaction-title{margin:0;font-weight:550}.transaction-meta{margin:2px 0 0;color:var(--muted);font-size:.75rem}.transaction-amount{font-variant-numeric:tabular-nums;white-space:nowrap}.transaction-amount.income{color:var(--green)}.review-control{grid-column:1/-1;display:flex;align-items:flex-start;gap:8px;color:var(--muted);font-size:.78rem}.review-control input{width:18px;height:18px;margin:2px 0 0;accent-color:var(--blue)}.review-control label{cursor:pointer}.review-note{grid-column:1/-1;margin:0;color:var(--muted);font-size:.76rem}.inline-error{margin:8px 0;padding:9px 10px;border-left:3px solid var(--red);background:#b6474715;color:var(--red);font-size:.86rem}.text-button{min-height:auto;padding:5px 0;background:transparent;border:0;color:var(--blue);text-decoration:underline}.charts{display:grid;grid-template-columns:1fr 1.3fr;gap:20px;margin-top:20px}.category-chart{display:flex;align-items:center;gap:22px;min-height:160px}.donut{width:142px;aspect-ratio:1;border-radius:50%;display:grid;place-items:center;position:relative;flex:none}.donut::before{content:"";position:absolute;inset:22px;background:var(--surface);border-radius:50%}.donut span{position:relative;text-align:center;font-size:.73rem;color:var(--muted)}.donut strong{display:block;font-size:1.22rem;color:var(--ink)}.legend{flex:1;min-width:0}.legend button{width:100%;min-height:36px;padding:5px 3px;border:0;border-radius:4px;background:transparent;display:grid;grid-template-columns:10px 1fr auto;gap:8px;text-align:left;align-items:center;font-size:.8rem}.legend button[aria-pressed=true]{background:var(--blue-soft);color:var(--blue)}.dot{width:9px;height:9px;border-radius:50%}.children{grid-column:2/-1;margin:-2px 0 4px;padding-left:9px;border-left:1px solid var(--line)}.children button{grid-template-columns:8px 1fr auto;color:var(--muted);font-size:.76rem}.segmented{display:flex;gap:4px}.segmented button{min-height:32px;padding:3px 9px;font-size:.78rem}.segmented button[aria-pressed=true]{background:var(--blue-soft);border-color:var(--blue);color:var(--blue)}.trend-chart{display:block;width:100%;height:190px}.trend-chart text{fill:var(--muted);font:11px "Noto Sans TC",sans-serif}.trend-chart .grid{stroke:var(--line)}.trend-chart .line{fill:none;stroke:var(--blue);stroke-width:2.5;stroke-linejoin:round}.trend-chart .point{fill:var(--blue)}table{width:100%;border-collapse:collapse;font-size:.8rem;margin-top:8px}th,td{text-align:left;padding:6px;border-bottom:1px solid var(--line)}td:last-child,th:last-child{text-align:right}.advice-panel{margin-top:20px}.advice{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.advice article{padding-left:14px;border-left:3px solid var(--blue)}.advice article:nth-child(2n){border-color:var(--green)}.advice h3{font-size:.92rem;margin:0}.advice p{margin:7px 0;color:var(--muted);font-size:.84rem}.saved-analysis{margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}.saved-analysis h3{margin:0 0 8px}.saved-analysis ul{padding-left:20px}.login-body{min-height:100vh;display:grid;place-items:center;padding:20px}.login-card{width:min(100%,400px);padding:30px;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow)}.login-card h1{font-size:1.45rem;margin:16px 0 4px}.login-card>p{color:var(--muted);margin:0 0 24px}.login-card label{display:block;margin-bottom:5px}.login-card input{width:100%;min-height:46px;border:1px solid var(--line);border-radius:8px;padding:8px;background:var(--bg);color:var(--ink)}.login-card form button{width:100%;margin-top:10px;background:var(--blue);border-color:var(--blue);color:white}
@media(max-width:720px){.site-header{padding:14px 18px;flex-wrap:wrap}.month-picker{order:3;width:100%;justify-content:center}.page-shell{padding:18px}.calendar-layout,.charts{grid-template-columns:1fr}.summary{gap:10px}.summary article+article{padding-left:10px}.sum{font-size:1.42rem}.details-panel{min-height:0}.transactions{min-height:0}.category-chart{justify-content:space-around}.advice{grid-template-columns:1fr}}
@media(max-width:410px){.site-header{padding:12px}.brand small{display:none}.quiet-button{padding:6px 8px;font-size:.78rem}.page-shell{padding:12px}.panel{padding:13px}.summary{grid-template-columns:1.15fr 1fr 1fr;gap:6px;font-size:.9rem}.summary article+article{padding-left:6px}.summary small{font-size:.67rem}.sum{font-size:1.18rem;letter-spacing:-.065em;white-space:nowrap}.day{height:62px;padding:5px 3px}.day small{font-size:.61rem}.category-chart{flex-direction:column;align-items:stretch;gap:15px}.donut{width:122px;align-self:center}.legend{width:100%;max-width:none}.legend button span:nth-child(2){white-space:nowrap}.trend-chart{height:175px}}
@media(prefers-reduced-motion:no-preference){button{transition:background-color .18s ease,border-color .18s ease,color .18s ease}}