:root{--brand:#1C1917;--brand-dark:#292524;--brand-tint:#F5F5F4;--accent:#EA580C;--bg:#FFFFFF;--surface:#FAFAF9;--text:#1C1917;--text-muted:#57534E;--border:#E7E5E4;--ok:#15803D;--error:#B91C1C;--note-bg:#FFF7ED;--note-text:#9A3412;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:var(--bg);font-synthesis:none}
*{box-sizing:border-box}
body{margin:0}
a{color:var(--brand);text-underline-offset:4px}
button,input,select{font:inherit}
button,input,select,summary{touch-action:manipulation}
button{cursor:pointer}
button:disabled{cursor:not-allowed;opacity:.6}
button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--brand);outline-offset:3px}
header,main,footer{width:min(1080px,calc(100% - 40px));margin:auto}
.brandbar{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border);padding:23px 0;font-size:13px}
.brand{font-weight:750;letter-spacing:.03em;text-decoration:none}
.brand span{background:var(--brand);color:var(--bg);padding:5px 9px;margin-right:8px;border-radius:5px}
.eyebrow{text-transform:uppercase;letter-spacing:.15em;font-size:11px;font-weight:750;color:var(--text-muted)}
.hero{padding:48px 0 28px;max-width:690px}
h1,h2,h3,p{margin-top:0}
h1,h2{font-family:inherit;font-weight:800;letter-spacing:-.04em;color:var(--brand)}
h1{font-size:58px;font-weight:900;line-height:1.08;margin-bottom:18px}
h2{font-size:32px;line-height:1.2;margin-bottom:22px}
h3{font-size:17px;line-height:1.4}
p,li{font-size:16px;line-height:1.75}
.hero p{font-size:17px;max-width:640px;color:var(--text-muted);margin-bottom:0}
.calculator{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:28px;align-items:start}
.panel{background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:28px}
.panel h2{font-size:26px;margin-bottom:24px}
.section-num{font-family:inherit;color:var(--text-muted);font-size:12px;margin-right:8px}
.topfields,.pair{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px}
.field{margin-bottom:18px;min-width:0}
label,.label{display:block;font-size:13px;font-weight:650;margin-bottom:7px}
input:not([type=radio]):not([type=checkbox]),select,textarea{width:100%;min-width:0;background:var(--bg);border:1px solid var(--border);border-radius:6px;padding:12px;font-size:16px;color:var(--text);scroll-margin:100px 0}
input[type=checkbox],input[type=radio]{accent-color:var(--brand);width:18px;height:18px;flex-shrink:0}
.money-input{position:relative}
.money-input span{position:absolute;left:13px;top:13px;color:var(--text-muted)}
.money-input input{padding-left:30px!important}
.primary{background:var(--brand);color:var(--bg);border:1px solid var(--brand);border-radius:10px;font-weight:650;padding:12px 18px;width:100%;min-height:48px}
.primary:hover,.primary:active{background:var(--brand-dark)}
.calculate{margin-bottom:24px}
.hint{font-size:12px;line-height:1.6;color:var(--text-muted);margin:7px 0 14px}
.chips{display:flex;gap:6px;margin-bottom:10px}
.chips button{color:var(--text);flex:1;background:var(--bg);border:1px solid var(--border);border-radius:5px;padding:10px 3px;min-height:44px;font-size:13px}
.chips button[aria-pressed=true]{background:var(--brand-tint);border-color:var(--brand);color:var(--brand);font-weight:700}
.check{display:flex;align-items:center;gap:8px;min-height:44px;font-weight:400}
.check input{margin:0}
.divider{border:0;border-top:1px solid var(--border);margin:22px 0}
fieldset{padding:0;border:0;margin:20px 0}
legend{font-size:14px;font-weight:700;margin-bottom:12px}
.option{display:flex;gap:10px;border:1px solid var(--border);border-radius:7px;padding:12px;margin-bottom:8px;font-weight:600}
.option input{margin:2px 0}
.option small{display:block;font-size:12px;font-weight:400;color:var(--text-muted);line-height:1.5;margin-top:4px}
.option:has(input:checked){background:var(--brand-tint);border-color:var(--brand)}
.person{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.8fr);gap:12px;margin:12px 0}
.person:has(.person-value[hidden]){grid-template-columns:1fr}
details{border-top:1px solid var(--border);padding-top:16px;margin-top:20px}
summary{cursor:pointer;font-size:14px;font-weight:650;padding:8px 0}
.advanced-person{display:flex;flex-wrap:wrap;gap:8px 16px;border-bottom:1px solid var(--border);padding:8px 0}
.advanced-person>span{width:100%;overflow-wrap:anywhere;font-size:13px}
.receipt{position:sticky;top:24px;background:var(--surface);border-color:var(--border)}
.receipt-head{display:flex;justify-content:space-between;align-items:center}
.badge{font-size:10px;letter-spacing:.1em;text-transform:uppercase;border:1px solid var(--border);border-radius:4px;padding:5px 7px}
.total-label{font-size:13px;color:var(--text-muted);margin-bottom:4px}
.total{font-family:inherit;font-weight:800;color:var(--accent);font-size:52px;letter-spacing:-.04em;margin:0 0 8px;font-variant-numeric:tabular-nums}
.receipt table{width:100%;border-collapse:collapse;font-size:14px}
.receipt th,.receipt td{padding:13px 0;border-bottom:1px solid var(--border);text-align:left;overflow-wrap:anywhere}
.receipt th:first-child{width:45%}
.receipt th:nth-child(n+2),.receipt td:nth-child(n+2){text-align:right}
.receipt th{font-size:11px;color:var(--text-muted);font-weight:600}
.receipt td:nth-child(2){font-weight:750;font-variant-numeric:tabular-nums}
.totals{margin:22px 0}
.totals div{display:flex;justify-content:space-between;gap:12px;padding:5px 0;font-size:13px}
.totals dd{margin:0;font-variant-numeric:tabular-nums}
.totals div:last-child{border-top:1px solid var(--border);margin-top:9px;padding-top:12px;font-weight:750}
.verified{font-size:12px;color:var(--ok)}
.transfers{background:var(--note-bg);color:var(--note-text);border-left:3px solid var(--accent);border-radius:8px;margin-top:22px;padding:18px}
.transfers .hint{color:var(--note-text)}
.transfers h3{margin-bottom:8px}
.transfers p,.transfers li{font-size:13px}
.transfers ul{padding-left:18px}
.actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:22px}
.secondary{border:1px solid var(--brand);background:transparent;border-radius:6px;padding:12px 8px;min-height:46px;font-size:13px;font-weight:600;color:var(--brand)}
.secondary:hover,.secondary:active{background:var(--brand-tint);color:var(--brand-dark)}
.privacy-note{font-size:11px;line-height:1.7;margin:14px 0 0;color:var(--text-muted)}
.error{color:var(--error);font-size:14px;line-height:1.5}
.copy-fallback{margin-top:10px}
.save-image{width:100%;margin-top:8px}
#payments .pair{margin-top:12px}
#expense-list{padding-left:20px}
#expense-list li{overflow-wrap:anywhere;font-size:13px;margin:12px 0}
#expense-list button{margin-left:8px}
#balances li{overflow-wrap:anywhere}
.copy-fallback textarea{height:120px;font:14px monospace}
.content{max-width:780px;margin:64px auto}
.content section{border-top:1px solid var(--border);padding:32px 0 8px}
.content h3{margin-top:26px;margin-bottom:10px}
.content p{color:var(--text)}
.example{background:var(--surface);padding:26px;border-radius:10px;margin-bottom:36px}
.example h2{font-family:inherit;letter-spacing:0;font-size:19px;font-weight:650}
.example table{width:100%;border-collapse:collapse}
.example td,.example th{text-align:left;padding:10px 0;border-bottom:1px solid var(--border);font-size:14px}
.example td:last-child,.example th:last-child{text-align:right}
.example p{font-size:13px;margin:16px 0 0}
.steps{padding-left:23px}
.steps li{padding-left:8px;margin-bottom:18px}
.steps strong{display:block}
footer{border-top:1px solid var(--border);padding:28px 0 40px;font-size:12px;color:var(--text-muted)}
footer nav{display:flex;gap:24px;margin-bottom:15px}
footer p{font-size:12px}
.skip{position:absolute;top:-100px;left:10px}
.skip:focus{top:10px;background:var(--bg);padding:12px;z-index:10}
[hidden]{display:none!important}
.info{max-width:740px;padding:50px 0}
.info h1{font-size:44px}
.info p{line-height:1.85}
.noscript{padding:12px;background:var(--surface);border-radius:6px;font-size:13px}
@media(max-width:700px){header,main,footer{width:calc(100% - 32px)}
.brandbar{padding:16px 0}
.brandbar .eyebrow{font-size:9px}
.hero{padding:27px 0 22px}
h1{font-size:39px;margin-bottom:12px}
.hero p{font-size:16px;line-height:1.6}
.calculator{grid-template-columns:1fr;gap:18px}
.panel{padding:20px}
.panel h2{font-size:24px;margin-bottom:18px}
.receipt{position:static}
.content{margin:40px auto}
.content h2{font-size:28px}
.example{padding:20px}
.example h2{font-size:17px}
.total{font-size:48px}
.topfields{grid-template-columns:minmax(0,1.3fr) minmax(0,1fr)}
.calculate{margin-bottom:20px}
.field{margin-bottom:14px}
}
@media(prefers-reduced-motion:no-preference){button{transition:background .15s}
html{scroll-behavior:smooth}
}