:root{--accent:#9a7836;--accent-bright:#80612b;--card:#fff;--elevated:#faf8f4;--input:#f5f3ee;--ink:#25251f;--muted:#7a7b71;--line:#e5e0d5;--canvas:#f4f2ed;--green:#725b2c}
:root[data-theme=dark]{color-scheme:dark;--accent:#cdaa69;--accent-bright:#e6c88c;--card:#0c0d10;--elevated:#141519;--input:#08090b;--ink:#eeeef0;--muted:#94949e;--line:#28292f;--canvas:#050507;--green:#cdaa69}
body{background:var(--canvas);color:var(--ink)}aside{background:var(--card);border-right:1px solid var(--line);width:208px}.brand{color:var(--accent)}.brand span{color:var(--ink)}.aside-label,.aside-bottom small{color:var(--muted)}.aside-bottom{color:var(--accent)}nav button{color:var(--muted)}nav button:hover,nav button.active{background:var(--elevated);color:var(--accent);border-color:var(--line)}main{margin-left:208px;padding:0 28px;max-width:1880px}header{min-height:67px}header button{white-space:nowrap}button{background:var(--card);color:var(--ink);border-color:var(--line)}button:hover{background:var(--elevated);border-color:var(--accent);color:var(--accent)}button.primary{background:var(--accent);border-color:var(--accent);color:#100e09}button.primary:hover{background:var(--accent-bright);color:#100e09}input,select{background:var(--input);color:var(--ink);border-color:var(--line);font-variant-numeric:tabular-nums}input:focus,select:focus{outline:2px solid var(--accent);border-color:transparent}input:disabled{opacity:.5}label{color:var(--muted)}.eyebrow{color:var(--accent)}h1{font-family:system-ui,sans-serif;font-size:25px;font-weight:700;letter-spacing:-.7px}.view{padding:26px 0}.compact{margin-bottom:18px}.compact p{margin:6px 0;font-size:12px}.compact .actions{margin:0;flex-wrap:nowrap}.compact .actions button{font-size:11px;white-space:nowrap}.card{background:var(--card);border-color:var(--line);padding:19px;border-radius:12px;margin-bottom:18px;box-shadow:none}.section-title{margin-bottom:16px}.section-title h2{font-size:14px}.section-title span{background:var(--elevated);color:var(--accent)}.fields{gap:0 13px}.fields label{margin-bottom:13px}input,select{padding:9px 10px;font-size:12px}.toolbar{padding:13px 18px}.toolbar-fields{grid-template-columns:.7fr .8fr .8fr 1fr}.toolbar-fields label{margin:0;font-size:10px}.fx-summary{border-top:1px solid var(--line);padding-top:10px;margin-top:11px;color:var(--accent);font-size:10px;font-variant-numeric:tabular-nums}.workspace-grid{grid-template-columns:minmax(320px,.87fr) minmax(420px,1.3fr);gap:20px;align-items:start}.input-column,.output-column{min-width:0}.input-column .card{margin-bottom:16px}.result-toolbar{position:sticky;top:0;z-index:1;display:flex;gap:9px;align-items:center;flex-wrap:wrap;padding:11px 0;background:var(--canvas);margin-bottom:6px}.result-toolbar>span{font-size:10px;color:var(--accent);flex:1;min-width:90px}.result-toolbar button{padding:7px 11px;font-size:11px}.live-toggle{display:flex;align-items:center;gap:5px;font-size:10px;white-space:nowrap;margin:0}.live-toggle input{margin:0;width:13px;height:13px;accent-color:var(--accent)}.slider-control{padding:12px;background:var(--elevated);border:1px solid var(--line);border-radius:8px;margin-bottom:12px}.slider-control label{display:flex;gap:12px;align-items:center;justify-content:space-between;margin:0 0 10px;font-size:11px}.slider-control label input{width:114px;margin:0;text-align:right;color:var(--accent);font-weight:650;font-size:14px}.slider-control input[type=range]{appearance:none;border:0;background:var(--line);height:4px;width:100%;padding:0;border-radius:4px;accent-color:var(--accent);margin:8px 0}.slider-control input[type=range]::-webkit-slider-thumb{appearance:none;width:16px;height:16px;background:var(--accent);border-radius:50%;border:2px solid var(--elevated)}.certification-panel{border-top:1px solid var(--line);padding-top:12px}.hsn-reference{color:var(--accent);font-size:10px;font-variant-numeric:tabular-nums}.cert-chips{display:flex;gap:6px;flex-wrap:wrap;margin:10px 0}.cert-chips span{border:1px solid var(--line);background:var(--elevated);color:var(--accent);font-size:10px;border-radius:5px;padding:3px 7px}.reference-note{display:block;font-size:10px;color:var(--muted);line-height:1.5}.effective-duty{font-size:11px;color:var(--accent);font-weight:600;border-top:1px solid var(--line);padding-top:10px}.rate-source{font-size:9px;font-weight:400;display:block;margin-top:4px;line-height:1.4;min-height:14px}.assumed{border-color:var(--accent);color:var(--accent)}.part-card{background:var(--elevated);border:1px solid var(--line);border-radius:8px;padding:10px;margin-bottom:10px}.part-card>select{margin:0 0 8px}.part-row{grid-template-columns:1fr 1fr auto}.part-row button{padding:5px 9px}.hero-result{background:var(--elevated);border:1px solid var(--line);padding:18px;margin-top:14px}.hero-result strong{font:700 34px/1.3 system-ui,sans-serif;letter-spacing:-1px;color:var(--accent)}.hero-result small{color:var(--muted);font-size:10px}.allocation{display:flex;gap:2px;height:10px;border-radius:5px;overflow:hidden;background:var(--input)}.allocation span{height:100%;min-width:0}.allocation-legend{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:13px 0 22px}.allocation-legend div{font-size:9px;color:var(--muted)}.allocation-legend strong{display:block;font-size:10px;color:var(--ink);font-weight:600;font-variant-numeric:tabular-nums}.allocation-legend i{display:inline-block;width:6px;height:6px;border-radius:2px;margin-right:4px}.metrics{grid-template-columns:repeat(2,1fr);gap:12px 20px}.metric strong{font-size:19px;color:var(--accent)}.metric strong.negative{color:#ed8d8d}#results>h2{margin:25px 0 7px;font-size:13px}.table-wrap{background:var(--card);border-color:var(--line);margin:9px 0 18px}th{background:var(--elevated);font-size:9px;color:var(--muted)}td{font-size:10px;color:var(--ink)}td,th{padding:10px 9px}.payment-flow{display:grid;gap:7px;margin-top:10px}.flow-step{display:flex;align-items:center;gap:10px;background:var(--elevated);border:1px solid var(--line);border-radius:7px;padding:10px;font-size:10px}.flow-step strong{margin-left:auto;color:var(--accent);font-size:11px;white-space:nowrap}.step-number{color:var(--muted);font-size:9px}details{margin-top:19px}summary{font-size:12px;color:var(--accent)}.source-line{font-size:10px}.warning{background:var(--elevated);border:1px solid var(--line);color:var(--muted);font-size:10px}.empty{background:var(--card);min-height:280px}.checkbox-label{display:flex;align-items:center;gap:9px}.checkbox-label input{width:16px;margin:0}.negative{color:#d37e75}#notice{background:var(--elevated);color:var(--accent);border-color:var(--line)}footer{color:var(--muted)}.auth .card{background:var(--card)}.auth h1{font-family:Georgia,serif;font-weight:400}#results{overflow:hidden}#results .table-wrap td:nth-child(n+2){white-space:nowrap;font-variant-numeric:tabular-nums}#results .table-wrap th:nth-child(n+2){text-align:right}#results .table-wrap td:nth-child(n+2){text-align:right}
@media(min-width:1600px){main{padding:0 45px}.workspace-grid{grid-template-columns:minmax(350px,.85fr) minmax(500px,1.35fr);gap:25px}.card{padding:23px}}
@media(max-width:1150px){aside{position:static;width:100%;padding:12px 24px;border-bottom:1px solid var(--line);border-right:0}.brand{font-size:20px}.brand span{font-size:23px}.aside-label,.aside-bottom{display:none}nav{display:flex;gap:4px;overflow:auto;margin-top:9px}nav button{white-space:nowrap;padding:8px 10px;font-size:11px}main{margin:0;padding:0 22px}.workspace-grid{grid-template-columns:minmax(310px,1fr) minmax(350px,1.15fr)}.compact h1{font-size:21px}}
@media(max-width:800px){.workspace-grid{grid-template-columns:1fr}.result-toolbar{position:static}.compact{align-items:start;display:block}.compact .actions{margin-top:12px}.toolbar-fields{grid-template-columns:1fr 1fr;gap:10px}.allocation-legend{grid-template-columns:repeat(4,1fr)}.input-column{display:grid;grid-template-columns:1fr 1fr;gap:14px;align-items:start}.input-column>.card{height:100%;margin:0}.output-column{margin-top:10px}header{font-size:10px}header>div{gap:7px}.compact h1{font-size:22px}}
@media(max-width:570px){main{padding:0 12px}aside{padding:12px 14px}header{gap:10px;min-height:58px}#company-label{max-width:90px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#identity{max-width:90px;font-size:9px}header button{font-size:9px;padding:5px 7px}.input-column{display:block}.input-column>.card{margin-bottom:14px;height:auto}.view{padding-top:20px}.card{padding:15px}h1{line-height:1.4}.compact h1{font-size:19px}.fx-summary{line-height:1.8}.allocation-legend{grid-template-columns:repeat(3,1fr)}.hero-result strong{font-size:31px}.metrics{gap:12px}.metric span{font-size:10px}.metric strong{font-size:17px}.flow-step{gap:7px;font-size:9px}.flow-step strong{font-size:10px}.result-toolbar{gap:8px}.result-toolbar>span{flex-basis:100%}.slider-control label{font-size:10px}.slider-control label input{width:100px}.part-row{gap:6px}.table-wrap{max-width:100%}.toolbar-fields input,.toolbar-fields select{font-size:11px}.actions{gap:8px}}