/* Shared look for the finance.connoraherne.com calculators (same palette as the Financial Projects page). */
:root{
  --night:#08141A;--night-2:#050D12;--panel:#0C1D24;--panel-2:#0F242C;--line:#1C3A40;--line-soft:#132A30;
  --gold-1:#FFE48C;--gold-2:#FFC845;--gold-3:#F29A2E;--mint:#3DDC97;--mint-hi:#8BF0C4;--rose:#FF8094;--cyan:#2AF5FF;
  --text:#E1EEEA;--dim:#93ADA7;--faint:#6F8A84;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
  --sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --gut:clamp(16px,5vw,48px);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:16px}
body{margin:0;background:var(--night-2);color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--mint-hi);text-underline-offset:3px}
a:hover{color:#fff}
:focus-visible{outline:2px solid var(--mint);outline-offset:3px}
.wrap{max-width:1120px;margin:0 auto;padding:0 var(--gut)}
.sr-only{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* masthead, as on the Financial Projects page */
.masthead{position:relative;z-index:5;display:flex;flex-direction:column;align-items:center;gap:14px;padding:18px var(--gut) 16px;
  background:linear-gradient(180deg,rgba(5,13,18,.92),rgba(5,13,18,.55));border-bottom:1px solid rgba(61,220,151,.22)}
.mark{font-family:var(--mono);font-size:13px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;text-decoration:none;color:var(--text);text-shadow:0 0 16px rgba(61,220,151,.45)}
.mark span{color:var(--gold-2)}
.menu{display:flex;flex-wrap:wrap;justify-content:center;gap:6px}
.menu a{font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:#BFD6D0;text-decoration:none;padding:9px 14px;
  border:1px solid var(--line);border-radius:7px;background:rgba(12,29,36,.8);transition:color .18s,border-color .18s,background .18s}
.menu a:hover{color:#fff;border-color:var(--mint);background:rgba(61,220,151,.08)}
.menu a.home{color:var(--gold-2);border-color:rgba(255,200,69,.4);background:rgba(255,200,69,.07)}
.menu a.home:hover{color:var(--gold-1);border-color:var(--gold-2);background:rgba(255,200,69,.14)}
@media (min-width:720px){
  .menu{gap:0;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:rgba(12,29,36,.8)}
  .menu a{border:0;border-right:1px solid var(--line-soft);border-radius:0;background:none}
  .menu a:last-child{border-right:0}
}

/* page backdrop: faint graph paper and two soft glows, placed from the middle of the screen so they sit around the
   content on any width (fixed, so the cards slide over it) */
.backdrop{position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(560px 420px at calc(50% + 380px) 160px,rgba(255,200,69,.09),transparent 70%),
    radial-gradient(620px 460px at calc(50% - 520px) 260px,rgba(61,220,151,.07),transparent 70%),
    radial-gradient(700px 560px at calc(50% + 120px) 85%,rgba(42,245,255,.035),transparent 70%),
    linear-gradient(180deg,#071319 0%,var(--night-2) 70%)}
.backdrop::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(61,220,151,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(61,220,151,.06) 1px,transparent 1px);
  background-size:56px 56px;background-position:center top;
  -webkit-mask-image:radial-gradient(90% 75% at 50% 20%,#000 25%,transparent 85%);mask-image:radial-gradient(90% 75% at 50% 20%,#000 25%,transparent 85%)}

/* page head: compound growth across the whole width, above a faint horizon */
.tool-head{position:relative;overflow:hidden;padding:clamp(30px,6vw,64px) 0 clamp(28px,4.5vw,48px);border-bottom:1px solid transparent;
  border-image:linear-gradient(90deg,transparent,rgba(61,220,151,.45) 30%,rgba(255,200,69,.55) 80%,transparent) 1}
.tool-head .wrap{position:relative}
.curve{position:absolute;inset:0;pointer-events:none}
.curve>svg{position:absolute}
.curve .tail,.curve .rise{position:absolute;top:0;bottom:0}
.curve .tail{left:0;width:50%}
.curve .rise{left:50%;width:min(50%,620px);-webkit-mask-image:linear-gradient(90deg,#000 85%,transparent);mask-image:linear-gradient(90deg,#000 85%,transparent)}
.curve .tail svg,.curve .rise svg{display:block;width:100%;height:100%}
@media (max-width:640px){.curve{opacity:.45}}
.curve .mark{position:absolute;width:12px;height:12px;margin:-6px 0 0 -6px;border-radius:50%;background:var(--night-2);border:2.5px solid var(--gold-2);
  box-shadow:0 0 0 4px rgba(255,200,69,.12),0 0 18px rgba(255,200,69,.55);animation:glow 3.2s ease-in-out infinite}
@keyframes glow{50%{box-shadow:0 0 0 7px rgba(255,200,69,.06),0 0 26px rgba(255,200,69,.75)}}
.eyebrow{font-family:var(--mono);font-size:11.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--mint);margin:0}
.eyebrow a{color:inherit;text-decoration:none}
.eyebrow a:hover{color:#fff}
.tool-head h1{font-family:var(--mono);font-weight:600;font-size:clamp(30px,5vw,54px);line-height:1.08;letter-spacing:-.025em;margin:14px 0 0;max-width:24ch;color:#F6FFFB;text-wrap:balance;text-shadow:0 0 28px rgba(61,220,151,.25)}
.tool-head h1 em{font-style:normal;background:linear-gradient(90deg,var(--gold-2),var(--gold-1) 55%,var(--mint-hi));-webkit-background-clip:text;background-clip:text;color:transparent;text-shadow:none}
.question{margin:16px 0 0;max-width:34ch;font-size:clamp(19px,2.5vw,26px);line-height:1.3;font-weight:600;color:#F2FAF7;text-wrap:balance;text-shadow:0 1px 12px rgba(5,13,18,.95)}
.question em{font-style:normal;color:var(--gold-2)}
.lede{margin:10px 0 0;color:var(--dim);max-width:68ch;text-wrap:pretty}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 16px;font-family:var(--mono);font-size:12.5px;letter-spacing:.05em;
  color:var(--text);background:var(--panel-2);border:1px solid var(--line);border-radius:8px;cursor:pointer;text-decoration:none;transition:border-color .18s,color .18s,background .18s}
.btn:hover{border-color:var(--mint);color:#fff}
.btn.gold{color:#1A1405;background:linear-gradient(180deg,var(--gold-1),var(--gold-2));border-color:var(--gold-2);font-weight:600}
.btn.gold:hover{color:#000;filter:brightness(1.05)}
.btn.small{min-height:36px;padding:6px 12px;font-size:11.5px}

/* calculator layout: inputs left, live results right (results first on phones, then the inputs) */
.calc{display:grid;gap:22px;padding-bottom:8px}
@media (min-width:900px){
  .calc{grid-template-columns:minmax(0,1fr) minmax(0,1.04fr);align-items:start;gap:28px}
  .results{position:sticky;top:14px}
}
@media (max-width:899px){
  .calc .results{display:contents}
  .calc .main-card{order:-1}
}
.panel{background:linear-gradient(180deg,var(--panel),#0A1A20);border:1px solid var(--line);border-radius:12px}
.inputs{padding:clamp(16px,2.6vw,24px)}
.inputs-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:6px}
h2{font-family:var(--mono);font-weight:600;font-size:14px;letter-spacing:.14em;text-transform:uppercase;margin:0;color:#F6FFFB}

/* one setting: label, typed box, slider */
.field{padding:14px 0 12px;border-top:1px solid var(--line-soft)}
.inputs-head+.field{border-top:0}
.f-top{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.f-top label{font-weight:500;font-size:15px;color:#EAF4F1}
.f-sub{display:block;font-size:12.5px;color:var(--dim);font-weight:400}
.f-sub:empty{display:none}
.f-lab{flex:1 1 180px;min-width:0}
.box{display:inline-flex;align-items:center;margin-left:auto;border:1px solid var(--line);border-radius:8px;background:var(--night-2);transition:border-color .18s}
.box:focus-within{border-color:var(--mint)}
.box .pre,.box .suf{font-family:var(--mono);font-size:13px;color:var(--dim);padding:0 0 0 10px}
.box .suf{padding:0 10px 0 0}
.box input{width:8.5ch;min-height:40px;padding:6px 8px;border:0;background:none;color:#F6FFFB;font-family:var(--mono);font-size:15px;text-align:right;font-variant-numeric:tabular-nums;outline:none}
.box input.wide{width:12ch}
.field.bad .box{border-color:var(--rose)}
.f-help{margin:6px 0 0;font-size:13px;color:var(--dim);min-height:0}
.f-help:empty{display:none}
.f-help.warn{color:var(--gold-1)}
.f-help.err{color:var(--rose)}
.f-odds{margin:6px 0 0;font-size:12.5px;line-height:1.5;color:var(--dim)}
.f-odds .buffett{display:block;margin-top:4px;color:var(--gold-1);font-style:italic}

input[type=range]{-webkit-appearance:none;appearance:none;display:block;width:100%;height:32px;margin:8px 0 0;background:transparent;cursor:pointer;--p:50%}
input[type=range]::-webkit-slider-runnable-track{height:6px;border-radius:999px;background:linear-gradient(90deg,var(--mint) 0 var(--p),var(--line) var(--p) 100%)}
input[type=range]::-moz-range-track{height:6px;border-radius:999px;background:var(--line)}
input[type=range]::-moz-range-progress{height:6px;border-radius:999px;background:var(--mint)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:24px;height:24px;margin-top:-9px;border-radius:50%;background:var(--gold-2);border:3px solid var(--night-2);box-shadow:0 0 0 1px var(--gold-2),0 2px 8px rgba(0,0,0,.5)}
input[type=range]::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--gold-2);border:3px solid var(--night-2);box-shadow:0 0 0 1px var(--gold-2)}
input[type=range]:focus-visible{outline:none}
input[type=range]:focus-visible::-webkit-slider-thumb{box-shadow:0 0 0 2px var(--mint),0 0 0 6px rgba(61,220,151,.3)}
input[type=range]:focus-visible::-moz-range-thumb{box-shadow:0 0 0 2px var(--mint),0 0 0 6px rgba(61,220,151,.3)}

/* little "?" explanations */
.info{position:relative;display:inline-flex}
.info>button{width:24px;height:24px;padding:0;border-radius:50%;border:1px solid var(--line);background:none;color:var(--dim);font:600 12px/1 var(--mono);cursor:pointer}
.info>button:hover,.info>button[aria-expanded=true]{color:var(--night-2);background:var(--mint);border-color:var(--mint)}
.info>button::after{content:"";position:absolute;inset:-10px}
.bubble{position:absolute;z-index:30;top:calc(100% + 8px);left:50%;transform:translateX(-50%);width:min(300px,78vw);padding:12px 14px;border-radius:10px;
  background:#0E2229;border:1px solid var(--line);box-shadow:0 14px 34px rgba(0,0,0,.55);font-family:var(--sans);font-size:13.5px;line-height:1.5;color:var(--text);font-weight:400;text-transform:none;letter-spacing:0;text-align:left}
.bubble[hidden]{display:none}

/* advanced */
.adv{margin-top:6px;border-top:1px solid var(--line-soft)}
.adv>summary{list-style:none;display:flex;align-items:center;gap:10px;min-height:52px;cursor:pointer;font-family:var(--mono);font-size:13px;letter-spacing:.06em;color:var(--mint-hi)}
.adv>summary::-webkit-details-marker{display:none}
.adv>summary::before{content:"+";display:inline-grid;place-items:center;width:22px;height:22px;border:1px solid var(--line);border-radius:6px;color:var(--mint)}
.adv[open]>summary::before{content:"\2212"}
.adv>summary small{font-family:var(--sans);letter-spacing:0;color:var(--dim);font-size:12.5px}
.adv>summary .a-t{display:flex;flex-wrap:wrap;align-items:baseline;column-gap:10px;padding:8px 0}
.adv>summary .a-t>span{white-space:nowrap}
.adv-body{padding-bottom:4px}
.adv-note{font-size:13.5px;color:var(--dim);margin:2px 0 12px}
.seg{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:4px;border:1px solid var(--line);border-radius:10px;background:var(--night-2);margin:0 0 6px}
.seg label{position:relative;display:grid;place-items:center;min-height:42px;padding:6px 8px;border-radius:7px;font-family:var(--mono);font-size:12.5px;text-align:center;color:var(--dim);cursor:pointer}
.seg input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.seg label:has(input:checked){background:var(--panel-2);color:#F6FFFB;box-shadow:inset 0 0 0 1px var(--mint)}
.seg label:has(input:focus-visible){outline:2px solid var(--mint);outline-offset:2px}
.seg.who{margin:6px 0 4px}

/* results */
.results{display:flex;flex-direction:column;gap:14px}
.card{padding:16px 18px;border:1px solid var(--line);border-radius:12px;background:linear-gradient(180deg,var(--panel),#0A1A20)}
.card .k{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim)}
.card .big{display:block;margin:6px 0 2px;font-family:var(--mono);font-weight:600;font-size:clamp(26px,3.4vw,32px);line-height:1.15;color:#F6FFFB;font-variant-numeric:tabular-nums}
.card .big.na{font-size:clamp(20px,2.6vw,24px);color:var(--gold-1)}
.card p{margin:4px 0 0;font-size:14.5px;color:#D3E3DF}
.card .sub{color:var(--dim);font-size:13px}
.main-card{position:relative;padding:20px 22px 18px;border-color:rgba(255,200,69,.45);background:radial-gradient(120% 120% at 100% 0%,rgba(255,200,69,.10),transparent 55%),linear-gradient(180deg,#10252B,#0A1A20);
  box-shadow:0 0 0 1px rgba(255,200,69,.08),0 18px 40px rgba(0,0,0,.35)}
.main-card .big{font-size:clamp(38px,6vw,56px);color:var(--gold-1)}
.main-card .lead{font-size:16px;color:#F0F7F5;margin-top:6px;text-wrap:pretty}
.main-card .cond{margin-top:10px;padding-top:10px;border-top:1px solid var(--line-soft);font-size:13.5px;color:var(--dim)}
.main-card .extra{margin:10px 0 0;padding:0;list-style:none;font-size:14px;color:#D3E3DF}
.main-card .extra li{padding:8px 0 0;border-top:1px dashed var(--line-soft);margin-top:8px}
.main-card .extra:empty{display:none}
.chip{flex:none;white-space:nowrap;display:inline-flex;align-items:center;gap:6px;padding:3px 9px;border-radius:999px;border:1px solid;font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase}
.chip.quick{color:var(--gold-2);border-color:rgba(255,200,69,.45);background:rgba(255,200,69,.07)}
.chip.mine{color:var(--mint);border-color:rgba(61,220,151,.45);background:rgba(61,220,151,.07)}
/* the other results: one compact list, label and note on the left, the number on the right */
.stats{padding:2px 18px}
.stat{display:grid;grid-template-columns:minmax(0,1fr) auto;column-gap:14px;align-items:center;padding:12px 0;border-top:1px solid var(--line-soft)}
.stat:first-child{border-top:0}
.s-k{grid-column:1;margin:0;display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--dim)}
.s-t{grid-column:1;margin:3px 0 0;font-size:13.5px;line-height:1.45;color:#C8DAD5}
.s-v{grid-column:2;grid-row:1 / span 2;font-family:var(--mono);font-weight:600;font-size:clamp(20px,2.4vw,24px);color:#F6FFFB;font-variant-numeric:tabular-nums;white-space:nowrap}
.assume{margin:0;padding:12px 14px;border-radius:10px;border:1px dashed var(--line);font-size:13px;color:var(--dim)}
.assume b{color:#D3E3DF;font-weight:500}
.share{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.share .status{font-family:var(--mono);font-size:12px;color:var(--mint)}

/* sections below the calculator */
.block{margin-top:clamp(28px,5vw,48px)}
.block>h2{margin-bottom:6px}
.block>.lede-s{margin:0 0 16px;color:var(--dim);font-size:14.5px;max-width:72ch}
.two{display:grid;gap:18px}
@media (min-width:900px){.two{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr)}}
.chart-card{padding:16px 16px 12px;min-width:0}
.chart-card h3{margin:0;font-family:var(--mono);font-size:13.5px;font-weight:600;letter-spacing:.04em;color:#F6FFFB}
.chart-card .desc{margin:4px 0 10px;font-size:13.5px;color:var(--dim)}
.legend{display:flex;flex-wrap:wrap;gap:6px 16px;margin:0 0 6px;padding:0;list-style:none;font-size:12.5px;color:#D3E3DF}
.legend li{display:inline-flex;align-items:center;gap:8px}
.legend i{display:inline-block;width:26px;height:0;border-top:2.5px solid}
.legend i.real,.legend i.base{border-color:var(--mint)}
.legend i.nominal{border-color:var(--gold-2);border-top-style:dashed}
.legend i.extra{border-color:var(--gold-2);border-top-style:dashed}
.legend i.goal{border-color:#C9D6D3;border-top-style:dotted}

.chart{position:relative;outline:none;border-radius:8px}
.chart:focus-visible{box-shadow:0 0 0 2px var(--mint)}
.chart svg{display:block;width:100%;height:auto;touch-action:pan-y;overflow:visible}
.chart .grid line{stroke:var(--line-soft);stroke-width:1}
.chart .grid .xtick{stroke:var(--line)}
.chart .tick{fill:var(--faint);font:11px var(--mono)}
.chart .axis{stroke:var(--line);stroke-width:1}
.chart .axis-label{fill:var(--dim);font:11px var(--sans)}
.chart .line{fill:none;stroke-width:2.5;stroke-linejoin:round;stroke-linecap:round}
.chart .line.real,.chart .line.base{stroke:var(--mint)}
.chart .line.nominal,.chart .line.extra{stroke:var(--gold-2);stroke-dasharray:7 5;stroke-width:2}
.chart .area.real,.chart .area.base{fill:rgba(61,220,151,.09)}
.chart .area.nominal,.chart .area.extra{fill:none}
.chart .ref{stroke:#C9D6D3;stroke-width:1.2;stroke-dasharray:2 4;opacity:.8}
.chart .ref.when{stroke:var(--gold-2);opacity:.55;stroke-dasharray:4 4}
.chart .ref-label{fill:#C9D6D3;font:11px var(--mono)}
.chart .ref-label.when{fill:var(--gold-1)}
.chart .end-label{font:600 11.5px var(--mono)}
.chart .end-label.real,.chart .end-label.base{fill:var(--mint-hi)}
.chart .end-label.nominal,.chart .end-label.extra{fill:var(--gold-1)}
.chart .mark{fill:var(--night-2);stroke-width:2.5}
.chart .mark.base{stroke:var(--mint)}
.chart .mark.extra{stroke:var(--gold-2)}
.chart .cross{stroke:rgba(225,238,234,.45);stroke-width:1}
.chart .dot{stroke:var(--night-2);stroke-width:2}
.chart .dot.real,.chart .dot.base{fill:var(--mint)}
.chart .dot.nominal,.chart .dot.extra{fill:var(--gold-2)}
.chart-tip{position:absolute;z-index:4;pointer-events:none;min-width:150px;max-width:240px;padding:9px 11px;border-radius:9px;background:rgba(9,22,27,.96);border:1px solid var(--line);box-shadow:0 10px 26px rgba(0,0,0,.5);font-size:12.5px;line-height:1.45}
.chart-tip b{display:block;font-family:var(--mono);font-size:12px;color:#F6FFFB;margin-bottom:3px}
.chart-tip span{display:block;color:#D3E3DF}
.chart-tip em{font-style:normal;color:var(--dim)}
.chart-note{margin:8px 0 0;font-size:12.5px;color:var(--faint)}

.tbl{margin-top:10px}
.tbl>summary{cursor:pointer;font-family:var(--mono);font-size:12px;color:var(--mint-hi);min-height:36px;display:flex;align-items:center}
.scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line-soft);border-radius:8px}
table.data{width:100%;border-collapse:collapse;font-size:13px;font-variant-numeric:tabular-nums}
table.data caption{text-align:left;padding:10px 12px 6px;color:var(--dim);font-size:12.5px}
table.data th,table.data td{padding:8px 12px;text-align:right;border-top:1px solid var(--line-soft);white-space:nowrap}
table.data th:first-child,table.data td:first-child{text-align:left}
table.data thead th{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.06em;color:var(--dim);border-top:0}
table.data tr.base td{color:#F6FFFB;background:rgba(61,220,151,.05)}

/* years of spending */
.yrs{display:grid;grid-template-columns:repeat(auto-fill,minmax(18px,1fr));gap:4px;margin:12px 0 8px;max-width:640px}
.yrs i{position:relative;display:block;aspect-ratio:1;border:1px solid var(--line);border-radius:4px;overflow:hidden;background:var(--night-2)}
.yrs i b{position:absolute;left:0;top:0;bottom:0;background:var(--gold-2)}
.yrs i.part{border-style:dashed}

.explain p{margin:0 0 12px;max-width:74ch;color:#D3E3DF}
.steps{margin:0;padding:0;list-style:none;display:grid;gap:8px;max-width:820px}
.steps li{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 14px;padding:10px 14px;border:1px solid var(--line-soft);border-radius:9px;background:rgba(12,29,36,.6);font-size:14px}
.steps li span{color:#D3E3DF}
.steps li code{font-family:var(--mono);font-size:13px;color:var(--gold-1);text-align:right;white-space:nowrap}
@media (max-width:560px){.steps li{grid-template-columns:1fr}.steps li code{text-align:left;white-space:normal}}
.disclaimer{margin:14px 0 0;padding:12px 14px;border-left:3px solid var(--gold-2);background:rgba(255,200,69,.05);border-radius:0 8px 8px 0;font-size:13.5px;color:#D3E3DF;max-width:820px}

.cta{display:grid;gap:14px;padding:clamp(18px,3vw,26px)}
@media (min-width:760px){.cta{grid-template-columns:1fr auto;align-items:center}}
.cta h3{margin:0;font-family:var(--mono);font-size:16px;color:#F6FFFB}
.cta p{margin:6px 0 0;color:var(--dim);font-size:14.5px;max-width:62ch}
.cta .disclose{margin-top:10px;font-size:13px;color:#D3E3DF}

/* closed-by-default rows: "Go deeper" and the questions */
.rows>details{border-top:1px solid var(--line-soft)}
.rows>details:last-of-type{border-bottom:1px solid var(--line-soft)}
.rows>details>summary{list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center;min-height:52px;padding:10px 0;cursor:pointer;font-weight:500;color:#EAF4F1}
.rows>details>summary::-webkit-details-marker{display:none}
.rows>details>summary::after{content:"+";flex:none;font-family:var(--mono);color:var(--mint);font-size:18px}
.rows>details[open]>summary::after{content:"\2212"}
.rows>details>summary:hover{color:#fff}
.rows>details>div{padding:0 0 16px;color:#C8DAD5;max-width:74ch}
.rows>details>div p{margin:0 0 10px}
.deeper>h2{margin-bottom:10px}
.deeper>details>div{max-width:none;padding:4px 0 24px}
.deeper .lede-s{margin:0 0 14px;color:var(--dim);font-size:14.5px;max-width:72ch}
.d-t{display:flex;flex-direction:column;gap:2px}
.d-t b{font-family:var(--mono);font-weight:600;font-size:14.5px;letter-spacing:.02em;color:#F6FFFB}
.d-t small{font-size:13px;font-weight:400;color:var(--dim)}

.method{font-size:14.5px;color:#C8DAD5}
.method ul{padding-left:18px;margin:8px 0}
.method li{margin:4px 0}
.method code{font-family:var(--mono);font-size:13px;color:var(--gold-1);background:rgba(12,29,36,.8);padding:1px 5px;border-radius:4px}
.fine{margin:clamp(28px,5vw,40px) 0 0;max-width:86ch;font-size:12.5px;line-height:1.55;color:var(--faint)}
.fine b{color:var(--dim);font-weight:600}
.fine+footer{margin-top:18px}
.formulas{display:grid;gap:6px;margin:10px 0;padding:14px;border:1px solid var(--line-soft);border-radius:10px;background:rgba(12,29,36,.5);font-family:var(--mono);font-size:13px;color:#E6F0EC;overflow-x:auto}

footer{margin-top:clamp(40px,7vw,72px);padding:22px 0 40px;border-top:1px solid var(--line-soft);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-family:var(--mono);font-size:11.5px;color:var(--dim)}
footer a{color:var(--dim);text-decoration:none}
footer a:hover{color:var(--mint)}

/* phones: the headline number stays in reach while you move the sliders */
.dock{position:fixed;left:10px;right:10px;bottom:calc(10px + env(safe-area-inset-bottom));z-index:40;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 14px;border:1px solid rgba(255,200,69,.45);border-radius:12px;background:rgba(8,20,26,.97);box-shadow:0 10px 30px rgba(0,0,0,.6);font-size:13px;color:#D3E3DF;
  transform:translateY(0);transition:transform .2s,opacity .2s}
.dock b{font-family:var(--mono);font-size:18px;color:var(--gold-1);white-space:nowrap}
.dock.off{transform:translateY(140%);opacity:0;pointer-events:none}
@media (min-width:900px){.dock{display:none}}

@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}html{scroll-behavior:auto}}