:root{
  --bg:#F4F7F8;--surface:#FFFFFF;--ink:#102A30;--muted:#55696F;--line:#D5E0E3;
  --brand:#0E5E6F;--brand-ink:#FFFFFF;--soft:#E4EEF1;--accent:#F2B134;--accent-ink:#2B1F00;
  --display:"Bricolage Grotesque",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --body:"Figtree",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#0B181C;--surface:#11242A;--ink:#E6F0F2;--muted:#98AEB4;--line:#23383E;
    --brand:#5BBCCD;--brand-ink:#03232A;--soft:#16323A;color-scheme:dark}
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.0625rem/1.6 var(--body)}
a{color:var(--brand);text-underline-offset:3px}
img,svg{max-width:100%}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:6px}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;background:var(--surface);padding:8px 12px;z-index:30}

/* Header */
.site-head{position:sticky;top:0;z-index:20;padding-top:env(safe-area-inset-top,0px);
  background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:saturate(1.4) blur(10px);
  -webkit-backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font:700 1.25rem/1 var(--display);letter-spacing:-.01em}
.logo svg{width:32px;height:32px;flex:none}
.nav{display:flex;gap:2px;flex-wrap:nowrap}
@media (max-width:480px){.nav a{padding:6px 8px;font-size:.92rem}.nav a:last-child{display:none}.logo span{font-size:1.1rem}.site-head .wrap{gap:8px}.logo svg{width:28px;height:28px}}
.nav a{white-space:nowrap;color:var(--ink);text-decoration:none;padding:8px 12px;border-radius:999px;font-weight:500;font-size:.98rem}
.nav a:hover,.nav a[aria-current="page"]{background:var(--soft)}

/* Type */
h1,h2,h3{font-family:var(--display);line-height:1.1;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(2.2rem,5vw,3.6rem);font-weight:700}
h2{font-size:clamp(1.5rem,2.6vw,2rem);font-weight:700}
h3{font-size:1.2rem;font-weight:600}
.lede{font-size:1.2rem;color:var(--muted);max-width:52ch;margin:0 0 28px}
.prose{max-width:68ch}
.prose p,.prose li{color:var(--ink)}
main{padding:36px 0 64px}
section{margin-top:56px}
section:first-child{margin-top:0}
.crumbs{font-size:.92rem;color:var(--muted);margin-bottom:18px}
.crumbs a{color:var(--muted)}

/* Hero */
.hero h1{max-width:14ch}

/* Panels */
.panel{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:24px}
@media (min-width:720px){.panel{padding:32px}}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.field label,.label{font-size:.9rem;font-weight:600;color:var(--muted)}
input,select,button{font:inherit;color:inherit}
input[type=text],input[type=date],input:not([type]),select{
  width:100%;min-height:52px;padding:10px 14px;border:1.5px solid var(--line);border-radius:12px;
  background:var(--bg);font-size:1.1rem}
select{appearance:none;-webkit-appearance:none;padding-right:40px;cursor:pointer;
  background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 22px) 52%,calc(100% - 16px) 52%;background-size:6px 6px;background-repeat:no-repeat}
input:focus,select:focus{border-color:var(--brand);outline:none;box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 25%,transparent)}
.swap{width:52px;height:52px;border-radius:50%;border:1.5px solid var(--line);background:var(--surface);
  cursor:pointer;font-size:1.3rem;display:grid;place-items:center;flex:none;transition:transform .25s}
.swap:hover{border-color:var(--brand)}
.swap.spin{transform:rotate(180deg)}

/* Currency */
.fx-grid{display:grid;gap:14px;grid-template-columns:1fr}
@media (min-width:760px){.fx-grid{grid-template-columns:1.1fr 1fr auto 1fr;align-items:end}}
.fx-grid .swap{justify-self:center}
.fx-result{display:block;margin:30px 0 6px}
.fx-big{font:700 clamp(2.6rem,8vw,5.2rem)/1 var(--display);letter-spacing:-.03em;word-break:break-word;
  background:linear-gradient(transparent 78%,color-mix(in srgb,var(--accent) 55%,transparent) 78%);padding:0 .05em}
.fx-code{font:600 clamp(1.2rem,3vw,1.8rem)/1 var(--display);color:var(--muted);margin-left:.35em}
.fx-rate{margin:12px 0 0;font-size:1.05rem}
.fx-meta{margin:18px 0 0;font-size:.88rem;color:var(--muted)}
.fx-meta a{color:var(--muted)}
.pairs{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.pairs button{border:1px solid var(--line);background:var(--bg);border-radius:999px;padding:7px 14px;cursor:pointer;font-size:.92rem}
.pairs button:hover{border-color:var(--brand)}
.status{margin-top:10px;font-size:.92rem;color:var(--muted)}

/* Unit converter */
.pair{display:grid;gap:14px;grid-template-columns:1fr}
@media (min-width:760px){.pair{grid-template-columns:1fr auto 1fr;align-items:end}}
.pair .swap{justify-self:center}
.duo{display:grid;grid-template-columns:1fr;gap:8px}
.duo input{font:600 1.5rem var(--display);min-height:60px}
.formula{margin:20px 0 0;font-size:1.05rem;color:var(--muted)}
.formula strong{color:var(--ink)}

/* Tables */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:1rem}
th,td{text-align:left;padding:11px 16px;border-bottom:1px solid var(--line)}
tr:last-child td{border-bottom:0}
th{font-weight:600;color:var(--muted);font-size:.9rem;background:var(--soft)}
td.num{font-variant-numeric:tabular-nums;font-weight:600}
tr.is-current td{background:color-mix(in srgb,var(--accent) 18%,transparent)}

/* Tool lists */
.tool-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr;column-gap:32px}
@media (min-width:720px){.tool-list{grid-template-columns:1fr 1fr}}
.tool-list a{display:block;padding:14px 12px;margin:0 -12px;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink);border-radius:10px}
.tool-list a:hover{background:var(--soft)}
.tool-list strong{display:block;font:600 1.12rem/1.3 var(--display)}
.tool-list span{display:block;color:var(--muted);font-size:.95rem;margin-top:2px}

/* Calculators */
.calc-grid{display:grid;gap:14px;grid-template-columns:1fr}
@media (min-width:640px){.calc-grid{grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}}
.calc-block+.calc-block{margin-top:28px;padding-top:28px;border-top:1px solid var(--line)}
.results{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));margin-top:24px}
.result{background:var(--bg);border-radius:14px;padding:14px 16px}
.result .k{font-size:.88rem;color:var(--muted);font-weight:600}
.result .v{font:700 1.6rem/1.2 var(--display);letter-spacing:-.01em;word-break:break-word}
.result.main{background:var(--brand);color:var(--brand-ink)}
.result.main .k{color:inherit;opacity:.85}
.inline{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.inline input{width:140px}
.answer{margin-top:12px;font:600 1.35rem/1.3 var(--display)}
.check{display:flex;align-items:center;gap:10px;font-weight:500;cursor:pointer}
.check input{width:20px;height:20px;accent-color:var(--brand)}
.seg{display:inline-flex;border:1.5px solid var(--line);border-radius:999px;padding:3px;margin-bottom:18px}
.seg button{border:0;background:none;padding:8px 16px;border-radius:999px;cursor:pointer;font-weight:600}
.seg button[aria-pressed="true"]{background:var(--brand);color:var(--brand-ink)}
.hint{color:var(--muted);font-size:.92rem;margin-top:14px}

/* App strip */
.app-strip{display:grid;gap:20px;align-items:center;background:var(--brand);color:var(--brand-ink);border-radius:22px;padding:28px}
@media (min-width:760px){.app-strip{grid-template-columns:1fr auto;padding:36px 40px}}
.app-strip h2{margin-bottom:.3em}
.app-strip p{margin:0;opacity:.9;max-width:56ch}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:999px;
  border:0;background:var(--accent);color:var(--accent-ink);font-weight:700;cursor:pointer;text-decoration:none}
.btn[hidden]{display:none}

/* Ads: hidden until you add your ad code */
.ad-slot{margin:32px 0;min-height:0}
.ad-slot:empty{display:none}

/* Footer */
.site-foot{border-top:1px solid var(--line);padding:40px 0 calc(40px + env(safe-area-inset-bottom,0px));color:var(--muted);font-size:.95rem}
.foot-grid{display:grid;gap:28px;grid-template-columns:1fr}
@media (min-width:720px){.foot-grid{grid-template-columns:2fr 1fr 1fr}}
.site-foot h2{font-size:1rem;color:var(--ink);margin-bottom:.6em}
.site-foot ul{list-style:none;margin:0;padding:0}
.site-foot li{margin:6px 0}
.site-foot a{color:var(--muted)}
.fine{margin-top:28px;font-size:.85rem}

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

/* ---- additions ---- */
input[type=datetime-local],input[type=search],textarea{
  width:100%;min-height:52px;padding:10px 14px;border:1.5px solid var(--line);border-radius:12px;background:var(--bg);font:inherit;font-size:1.1rem;color:inherit}
textarea{min-height:110px;resize:vertical;font-size:1rem}
input[type=search]:focus,textarea:focus,input[type=datetime-local]:focus{border-color:var(--brand);outline:none;box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 25%,transparent)}
.actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.ghost{border:1.5px solid var(--line);background:var(--surface);border-radius:999px;padding:8px 16px;cursor:pointer;font-weight:600;font-size:.95rem}
.ghost:hover{border-color:var(--brand)}
.search{max-width:560px}
.search input{font-size:1.05rem;padding-left:16px}
.empty{color:var(--muted);margin-top:12px}
.chip-list{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.chip-list a{display:inline-block;padding:8px 14px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--ink);text-decoration:none;font-weight:500;font-size:.95rem}
.chip-list a:hover{border-color:var(--brand)}
.group+.group{margin-top:20px}
.group h3{font-size:1rem;color:var(--muted);font-family:var(--body);font-weight:600;margin-bottom:10px}
.two-tables{display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:720px){.two-tables{grid-template-columns:1fr 1fr}}
.chart-box{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:20px}
.chart-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:8px}
.chart-head .seg{margin:0}
.chart-stats{font-size:.95rem;color:var(--muted)}
.chart-stats strong{color:var(--ink)}
.chart svg{display:block;width:100%;height:auto;touch-action:none}
.chart text{font:500 12px var(--body);fill:var(--muted)}
.chart .tip-text{fill:var(--ink);font-weight:700;font-size:13px}
.up{color:#1E8A4C}.down{color:#C2412D}
@media (prefers-color-scheme:dark){.up{color:#5FD08F}.down{color:#F08A74}}
.result.wide{grid-column:1/-1}
.cat-nav{border-bottom:1px solid var(--line);background:var(--surface)}
.cat-nav ul{list-style:none;margin:0;padding:8px 0;display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}
.cat-nav ul::-webkit-scrollbar{display:none}
.cat-nav a{display:block;white-space:nowrap;padding:6px 12px;border-radius:999px;color:var(--muted);text-decoration:none;font-weight:600;font-size:.92rem}
.cat-nav a:hover{color:var(--ink);background:var(--soft)}
.cat-nav a[aria-current="page"]{color:var(--brand-ink);background:var(--brand)}
.fx-meta.warn,.warn{color:var(--ink);background:color-mix(in srgb,var(--accent) 22%,transparent);padding:10px 14px;border-radius:12px}
.dp{display:flex;align-items:center;gap:8px;font-size:.95rem;font-weight:600;color:var(--muted)}
.dp select{min-height:40px;width:auto;padding:6px 36px 6px 12px;font-size:.95rem}
.actions{align-items:center}
a.swap{color:var(--ink);text-decoration:none}
.ghost:disabled{opacity:.5;cursor:not-allowed}
.facts{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));margin:0}
.facts div{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.facts dt{font-size:.88rem;color:var(--muted);font-weight:600}
.facts dd{margin:4px 0 0;font:600 1.15rem/1.3 var(--display)}
code.formula-code{font:600 1.1rem var(--display);background:var(--soft);padding:2px 8px;border-radius:6px}
.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}
.duo label:not(.sr-only){font-size:.9rem;font-weight:600;color:var(--muted)}
.h3{font-size:1.2rem;font-weight:600}