/* Worth It Calcs — Roth vs. Traditional (paper / ink / tomato, Instrument Serif + Sans, JetBrains Mono) */
:root{
  --paper:#f4efe4; --paper-dark:#ebe3d2; --card:#fffdf8;
  --ink:#1a1814; --ink-2:#45413a; --muted:#625c50; --rule:#ddd5c4;
  --tomato:#e5482e; --tomato-ink:#b8321c; --tomato-soft:#fbe3dc;
  --green:#2e7a4d; --green-soft:#ddefe3;
  --amber:#8a5d00; --amber-soft:#f6ebcf;
  --blue:#1f5fbf; --blue-soft:#e4ecf8;
  --focus:#1f5fbf; --dot:rgba(26,24,20,.07);
  --serif:'Instrument Serif','Times New Roman',Georgia,serif;
  --sans:'Instrument Sans',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --hard:6px 6px 0 var(--ink);
  --c-roth:#2e7a4d; --c-trad:#e5482e; --c-rec:#1a1814; --c-custom:#1f5fbf; --c-taxable:#8a5d00;
  color-scheme:light;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font:16px/1.55 var(--sans);background:var(--paper);background-image:radial-gradient(var(--dot) 1px,transparent 1px);background-size:18px 18px;color:var(--ink);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration-color:var(--tomato);text-underline-offset:3px;text-decoration-thickness:2px}
a:hover{color:var(--tomato-ink)}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:var(--paper);padding:8px 12px;z-index:60}
.skip:focus{left:8px}
.wrap{max-width:1280px;margin:0 auto;padding:0 20px;min-width:0}
.mono,.num{font-family:var(--mono);font-variant-numeric:tabular-nums}
h1,h2,h3{font-family:var(--serif);font-weight:400;letter-spacing:-.02em;line-height:1.08;margin:0}
h2{font-size:clamp(1.7rem,3.4vw,2.3rem)}
h3{font-size:1.35rem}
p{margin:.5rem 0}

/* site chrome */
.site-header{border-bottom:2px solid var(--ink);background:var(--paper)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:60px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:600;letter-spacing:-.01em;font-size:17px}
.brand-mark{width:32px;height:32px;border-radius:50%;background:var(--ink);color:var(--paper);display:grid;place-items:center;font:600 18px/1 var(--sans)}
.top-nav{display:flex;gap:18px;font:500 11px/1 var(--mono);text-transform:uppercase;letter-spacing:.2em}
.top-nav a{text-decoration:none;padding:10px 0}
@media (max-width:560px){.top-nav .opt{display:none}}
.site-footer{border-top:2px solid var(--ink);margin-top:40px;padding:24px 0 40px;font-size:14px;color:var(--ink-2)}
.site-footer p{margin:.4rem 0}
.site-footer .links a{margin-right:14px}

/* hero */
.hero{padding:34px 0 22px;border-bottom:2px solid var(--ink);margin-bottom:24px}
.eyebrow{font:500 11px/1.5 var(--mono);letter-spacing:.2em;text-transform:uppercase;color:var(--tomato-ink)}
h1{font-size:clamp(2.3rem,5.4vw,4rem);line-height:1.02;letter-spacing:-.025em;max-width:22ch;margin:12px 0 0}
h1 em{color:var(--tomato);font-style:italic}
.lede{color:var(--ink-2);font-size:1.08rem;max-width:64ch;margin-top:14px}
.trust-strip{display:flex;flex-wrap:wrap;gap:.3rem .9rem;list-style:none;padding:0;margin:16px 0 0;font:500 11px/1.4 var(--mono);text-transform:uppercase;letter-spacing:.12em;color:var(--ink-2)}
.trust-strip li::before{content:"✓ ";color:var(--green)}
.tag{display:inline-block;font:600 11px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;border:1.5px solid var(--ink);padding:5px 8px;background:var(--card)}

/* layout */
.layout{display:grid;grid-template-columns:minmax(0,400px) minmax(0,1fr);gap:28px;align-items:start}
@media (max-width:980px){.layout{grid-template-columns:minmax(0,1fr)}}
.layout>*{min-width:0}
.rail{min-width:0} /* one page scroll: no nested scrolling panel */

/* cards */
.card{background:var(--card);border:2px solid var(--ink);box-shadow:var(--hard);padding:20px;margin:0 0 22px;min-width:0}
.card.flat{box-shadow:none}
.card h2{margin-bottom:6px}
.card .kicker{font:500 11px/1.4 var(--mono);text-transform:uppercase;letter-spacing:.2em;color:var(--tomato-ink);margin-bottom:6px}
.card .note{color:var(--muted);font-size:.9rem}
.result-letter{display:inline-grid;place-items:center;width:26px;height:26px;background:var(--ink);color:var(--paper);font:600 12px/1 var(--mono);margin-right:8px;vertical-align:4px}

/* mode switch */
.segmented{display:flex;border:2px solid var(--ink);background:var(--card);margin:0 0 16px}
.segmented button{flex:1;appearance:none;border:0;border-right:2px solid var(--ink);background:transparent;padding:12px 8px;font:600 12px/1.2 var(--mono);text-transform:uppercase;letter-spacing:.1em;cursor:pointer;color:var(--ink)}
.segmented button:last-child{border-right:0}
.segmented button[aria-pressed=true]{background:var(--ink);color:var(--paper)}
.segmented.small button{padding:8px 6px;font-size:11px}

/* forms */
fieldset{border:0;padding:0;margin:0}
.group{background:var(--card);border:2px solid var(--ink);margin:0 0 14px}
.group>summary,.group>.legend{list-style:none;cursor:pointer;padding:12px 14px;font:600 12px/1.3 var(--mono);text-transform:uppercase;letter-spacing:.14em;display:flex;justify-content:space-between;align-items:center;gap:8px}
.group>summary::-webkit-details-marker{display:none}
.group>summary::after{content:"+";font-size:18px;line-height:1}
.group[open]>summary::after{content:"–"}
.group>summary:hover{background:var(--paper-dark)}
.group .body{padding:4px 14px 14px;border-top:1.5px solid var(--rule)}
.field{margin:12px 0 0;min-width:0}
.field label,.field .lbl{display:flex;align-items:center;gap:6px;font-weight:600;font-size:.92rem;margin-bottom:4px}
.field .hint{font-size:.84rem;color:var(--muted);margin:4px 0 0}
.field .hint[hidden]{display:none}
.tipbtn{appearance:none;border:1.5px solid var(--ink-2);background:transparent;width:18px;height:18px;border-radius:50%;font:700 11px/1 var(--mono);cursor:pointer;color:var(--ink-2);padding:0;flex:none}
.tipbtn[aria-expanded=true]{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.inp{display:flex;align-items:stretch;border:2px solid var(--ink);background:#fff}
.inp:focus-within{border-color:var(--tomato);box-shadow:3px 3px 0 var(--tomato)}
.inp .affix{display:grid;place-items:center;padding:0 9px;background:var(--paper-dark);font:500 13px/1 var(--mono);color:var(--ink-2)}
.inp input,.inp select{flex:1;min-width:0;width:100%;border:0;background:transparent;padding:10px;font:500 15px/1.2 var(--mono);color:var(--ink);font-variant-numeric:tabular-nums}
.inp input:focus,.inp select:focus{outline:none}
.inp select{font-family:var(--sans);cursor:pointer}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px;align-items:end}
.row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}
@media (max-width:420px){.row3{grid-template-columns:1fr 1fr}}
.check{display:flex;gap:8px;align-items:flex-start;font-weight:500;font-size:.92rem;margin-top:12px;cursor:pointer}
.check input{width:18px;height:18px;accent-color:var(--tomato);margin-top:2px;flex:none}
.field.invalid .inp{border-color:var(--tomato-ink);background:var(--tomato-soft)}
.err{color:var(--tomato-ink);font-size:.84rem;margin-top:4px}
.subhead{font:600 11px/1.3 var(--mono);text-transform:uppercase;letter-spacing:.16em;color:var(--muted);margin:16px 0 0;padding-top:10px;border-top:1px dashed var(--rule)}
.btn{appearance:none;border:2px solid var(--ink);background:var(--card);color:var(--ink);font:600 12px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;padding:12px 14px;cursor:pointer;box-shadow:4px 4px 0 var(--ink);transition:transform .08s,box-shadow .08s}
.btn:hover{transform:translate(-1px,-1px);box-shadow:5px 5px 0 var(--ink)}
.btn:active{transform:translate(3px,3px);box-shadow:1px 1px 0 var(--ink)}
.btn.primary{background:var(--tomato-ink);color:#fff;box-shadow:4px 4px 0 var(--ink)}
.btn.dark{background:var(--ink);color:var(--paper);box-shadow:4px 4px 0 var(--tomato)}
.btn.small{padding:8px 10px;font-size:11px;box-shadow:3px 3px 0 var(--ink)}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.btnrow{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}

/* headline answer */
.answer{background:var(--ink);color:var(--paper);border:2px solid var(--ink);box-shadow:6px 6px 0 var(--tomato);padding:22px;margin-bottom:22px}
.answer .kicker{color:#ffb4a6;font:500 11px/1.4 var(--mono);letter-spacing:.2em;text-transform:uppercase}
.answer h2{color:var(--paper);font-size:clamp(1.8rem,3.8vw,2.7rem);margin:8px 0 10px}
.answer h2 em{color:#ff8a73}
.answer p{color:#e9e2d3;max-width:70ch}
.answer .stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-top:16px}
.answer .stat{border:1.5px solid #5a554b;padding:10px 12px}
.answer .stat .v{font:600 1.3rem/1.1 var(--mono);color:#fff}
.answer .stat .v.pos{color:#7fd6a2}
.answer .stat .l{font-size:.8rem;color:#cfc7b6;margin-top:4px}
.answer .alt{margin-top:14px;padding-top:12px;border-top:1px dashed #5a554b;font-size:.95rem}

/* tables */
.tbl{width:100%;border-collapse:collapse;font-size:.93rem}
.tbl th,.tbl td{padding:9px 8px;border-bottom:1px solid var(--rule);text-align:left;vertical-align:top}
.tbl thead th{font:600 11px/1.3 var(--mono);text-transform:uppercase;letter-spacing:.1em;color:var(--ink-2);border-bottom:2px solid var(--ink)}
.tbl td.n,.tbl th.n{text-align:right;font-family:var(--mono);font-variant-numeric:tabular-nums;white-space:nowrap}
.tbl tr.tot td{border-top:2px solid var(--ink);font-weight:700}
.tbl tr.best td{background:var(--green-soft)}
.tbl caption{text-align:left;font-size:.85rem;color:var(--muted);caption-side:bottom;padding-top:8px}
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.compare-tbl th[scope=row]{font-weight:600;width:22%}
.compare-tbl td{font-size:.88rem}
.pos{color:var(--green)}
.neg{color:var(--tomato-ink)}

/* KPI tiles */
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin:12px 0}
.kpi{border:2px solid var(--ink);padding:12px;background:#fff}
.kpi .v{font:600 1.35rem/1.1 var(--mono)}
.kpi .l{font-size:.82rem;color:var(--muted);margin-top:4px}
.kpi.good{background:var(--green-soft)}
.kpi.bad{background:var(--tomato-soft)}

/* flags */
.flags{list-style:none;padding:0;margin:0 0 22px}
.flags li{border:2px solid var(--ink);padding:10px 12px 10px 40px;margin-bottom:10px;position:relative;background:var(--card);font-size:.94rem}
.flags li::before{position:absolute;left:12px;top:9px;font:700 14px/1 var(--mono);width:18px;height:18px;display:grid;place-items:center}
.flags li.info{background:var(--blue-soft)} .flags li.info::before{content:"i";border:1.5px solid var(--blue);border-radius:50%;color:var(--blue);font-size:11px}
.flags li.warn{background:var(--amber-soft)} .flags li.warn::before{content:"!";color:var(--amber)}
.flags li.stop{background:var(--tomato-soft)} .flags li.stop::before{content:"×";color:var(--tomato-ink)}

/* charts */
.chart{width:100%;margin-top:10px}
.chart svg{width:100%;height:auto;display:block;overflow:visible}
.chart text{font-family:var(--mono);font-size:11px;fill:var(--ink-2)}
.chart .axis line,.chart .axis path{stroke:var(--ink);stroke-width:1.5}
.chart .grid line{stroke:var(--rule);stroke-dasharray:3 3}
.chart .bar:hover,.chart .bar:focus{opacity:.82;outline:none}
.legend{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:.85rem;margin-top:8px}
.legend span{display:inline-flex;align-items:center;gap:6px}
.legend i{width:12px;height:12px;display:inline-block;border:1.5px solid var(--ink)}
.chart-tip{position:fixed;pointer-events:none;background:var(--ink);color:var(--paper);font:500 12px/1.4 var(--mono);padding:7px 9px;z-index:80;max-width:260px;box-shadow:3px 3px 0 var(--tomato)}
.chart-tip[hidden]{display:none}
.toggle-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:space-between;margin-top:6px}

/* lists */
.ticks{padding-left:0;list-style:none;margin:8px 0}
.ticks li{position:relative;padding-left:24px;margin:8px 0}
.ticks li::before{content:"→";position:absolute;left:0;color:var(--tomato);font-weight:700}
.why li::before{content:"✓";color:var(--green)}

/* bridge */
.meter{height:18px;border:2px solid var(--ink);background:var(--paper-dark);position:relative;margin:10px 0}
.meter>span{position:absolute;left:0;top:0;bottom:0;background:var(--green)}
.meter>span.short{background:var(--tomato)}

/* age guidance tabs */
.tabs{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0}
.tabs button{appearance:none;border:1.5px solid var(--ink);background:var(--card);padding:6px 9px;font:600 11px/1 var(--mono);cursor:pointer}
.tabs button[aria-selected=true]{background:var(--ink);color:var(--paper)}

/* scenarios */
.scen-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}

/* faq + methodology */
.faq details{border-bottom:1.5px solid var(--rule);padding:10px 0}
.faq summary{cursor:pointer;font-weight:600}
.faq details p{color:var(--ink-2)}
.formula{font-family:var(--mono);background:var(--paper-dark);border-left:4px solid var(--tomato);padding:10px 12px;margin:10px 0;overflow-x:auto;font-size:.88rem;white-space:pre-wrap}
.prose{max-width:76ch}
.prose h2{margin-top:32px}
.prose h3{margin-top:22px}
.prose li{margin:6px 0}
.sources{font-size:.88rem}
.sources li{margin:4px 0}
.busy{opacity:.55;transition:opacity .15s}
.placeholder{color:var(--muted);font-style:italic}

@media print{.site-header,.rail,.site-footer .links,.btn,.segmented{display:none}.layout{grid-template-columns:1fr}.card,.answer{box-shadow:none}body{background:#fff}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* v2.6 simplified results */
.btn.more{width:100%;margin:4px 0 14px;text-align:left;background:var(--paper-dark);border-style:dashed;font-weight:600;line-height:1.5;white-space:normal}
.status{border:2px dashed var(--ink);padding:10px 12px;margin:0 0 14px;font-size:.95rem;background:var(--paper);color:var(--ink)}
.status.sample{border-color:var(--tomato-ink);background:var(--tomato-soft);color:var(--ink)}
.answer .status b,.status b{color:var(--ink)}
.plain{border-left:4px solid var(--tomato);padding:4px 0 4px 12px;margin:16px 0 0;font-size:.95rem}
.flip{font-size:.95rem;margin:10px 0 0}
details.more-results{padding:0}
details.more-results>summary{list-style:none;cursor:pointer;padding:18px 20px;display:flex;flex-direction:column;gap:2px;position:relative;padding-right:56px}
details.more-results>summary::-webkit-details-marker{display:none}
details.more-results>summary::after{content:'+';position:absolute;right:20px;top:50%;transform:translateY(-50%);font:600 26px/1 var(--mono);color:var(--tomato-ink)}
details.more-results[open]>summary::after{content:'−'}
details.more-results>summary .kicker{margin:0}
details.more-results>summary .sumtitle{font-weight:600;font-size:1.05rem}
details.more-results>summary:focus-visible{outline:3px solid var(--tomato-ink);outline-offset:2px}
details.more-results>.card{box-shadow:none;border:0;border-top:2px solid var(--rule);margin:0}
details.inline{margin-top:12px}
details.inline>summary{cursor:pointer;font-weight:600;color:var(--tomato-ink)}
@media print{details.more-results>.card{display:block}}
.answer p.status{color:var(--ink)}
.tbl.plan td,.tbl.plan th{vertical-align:top}
.tbl.plan tr.plannote td{border-top:0;padding-top:0;color:var(--muted);font-size:.86rem}
.lead-plan{font-size:1.02rem}
@media print{.tbl.plan{font-size:.78rem}.tbl.plan td,.tbl.plan th{padding:4px 6px}.meter,.meter span{-webkit-print-color-adjust:exact;print-color-adjust:exact}.card{break-inside:auto}.tbl tr{break-inside:avoid}}
.answers{list-style:none;margin:16px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
@media (max-width:760px){.answers{grid-template-columns:1fr}}
.answers .ans{display:flex;gap:10px;border:1px solid #4a453c;padding:12px}
.answers .n{font:600 13px/1 var(--mono);color:var(--ink);background:#ffb4a6;width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex:none}
.answers .t{font:500 11px/1.4 var(--mono);text-transform:uppercase;letter-spacing:.12em;color:#ffb4a6}
.answers .v{font:600 1.35rem/1.25 var(--mono);color:var(--paper);margin:4px 0}
.answers .v small{font-size:.8rem}
.answers .l{font-size:.86rem;color:#d8d0c0}
.answer p.closecall{border-left:4px solid #ffb4a6;padding-left:10px}
@media print{.answers .ans{border-color:#999}.answers .v,.answers .l,.answers .t{color:#000}}
.tablewrap:focus-visible{outline:3px solid var(--tomato-ink);outline-offset:2px}
@media print{.chart,.chart svg,.kpis,.stats,.answers,.meter,.tbl thead{break-inside:avoid}h2,h3{break-after:avoid}#linkNote{display:none}}