/* Calculator PK v2 — ledger green + sarafa gold */
:root{
  --bg:#f4f6f2; --surface:#ffffff; --raised:#fbfcfa; --ink:#13221b; --muted:#56675e; --line:#dbe3da;
  --brand:#0d5c3f; --brand-2:#0a4a33; --brand-ink:#ffffff; --gold:#b8862b; --gold-soft:#f6ecd7; --soft:#e6f0e9;
  --ok:#1f7a4d; --warn:#a86b00; --bad:#b4322a;
  --display:"Bricolage Grotesque",ui-sans-serif,system-ui,sans-serif;
  --body:"Figtree",ui-sans-serif,system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  --r:14px; --shadow:0 1px 2px rgba(10,40,25,.06),0 8px 24px rgba(10,40,25,.06);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0e1612; --surface:#15201a; --raised:#192620; --ink:#e6eee8; --muted:#9baca2; --line:#28382f;
  --brand:#3fbf86; --brand-2:#34a574; --brand-ink:#07130c; --gold:#e2b45c; --gold-soft:#2d2616; --soft:#1b2b22;
  --ok:#4fd093; --warn:#e6b450; --bad:#ef7b72; --shadow:none; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0e1612; --surface:#15201a; --raised:#192620; --ink:#e6eee8; --muted:#9baca2; --line:#28382f;
  --brand:#3fbf86; --brand-2:#34a574; --brand-ink:#07130c; --gold:#e2b45c; --gold-soft:#2d2616; --soft:#1b2b22;
  --ok:#4fd093; --warn:#e6b450; --bad:#ef7b72; --shadow:none; color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 var(--body);-webkit-font-smoothing:antialiased}
a{color:var(--brand)}
img,svg{max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding-inline:20px}
@media (max-width:480px){.wrap{padding-inline:16px}}
:focus-visible{outline:3px solid var(--gold);outline-offset:2px;border-radius:6px}

/* Header */
.site-head{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.head-row{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.logo{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--ink);font:800 1.35rem/1 var(--display);letter-spacing:-.02em;white-space:nowrap}
.logo .mark{display:grid;place-items:center;width:34px;height:34px;border-radius:9px;background:var(--brand);color:var(--brand-ink);font-size:.95rem}
.logo .pk{color:var(--gold)}
.mainnav{display:flex;align-items:center;gap:4px}
.mainnav a{color:var(--ink);text-decoration:none;font-weight:600;font-size:.94rem;padding:8px 12px;border-radius:8px}
.mainnav a:hover{background:var(--soft)}
.mainnav a.cta{background:var(--brand);color:var(--brand-ink)}
.mainnav a.cta:hover{background:var(--brand-2)}
.menu{display:none}
@media (max-width:860px){
  .mainnav{display:none}
  .menu{display:block;position:relative}
  .menu summary{list-style:none;cursor:pointer;font-weight:600;padding:8px 12px;border:1px solid var(--line);border-radius:8px;background:var(--surface)}
  .menu summary::-webkit-details-marker{display:none}
  .menu nav{position:absolute;right:0;top:calc(100% + 8px);background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:8px;display:grid;min-width:240px}
  .menu nav a{color:var(--ink);text-decoration:none;padding:10px 12px;border-radius:8px;font-weight:500}
  .menu nav a:hover{background:var(--soft)}
}

/* Type */
h1,h2,h3{font-family:var(--display);letter-spacing:-.015em;text-wrap:balance;line-height:1.15}
h1{font-size:clamp(1.9rem,4.6vw,3.1rem);font-weight:800;margin:0 0 12px}
h2{font-size:clamp(1.4rem,3vw,1.9rem);font-weight:700;margin:0 0 12px}
h3{font-size:1.15rem;font-weight:700;margin:0 0 6px}
p{margin:0 0 12px}
.lead{font-size:1.1rem;color:var(--muted);max-width:62ch}
.eyebrow{font-size:.76rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--gold)}
.muted{color:var(--muted)}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* Sections */
section.block{padding-block:48px}
section.block.alt{background:var(--surface);border-block:1px solid var(--line)}
.sec-head{display:flex;justify-content:space-between;align-items:end;gap:16px;flex-wrap:wrap;margin-bottom:22px}
.sec-head p{margin:0;color:var(--muted);max-width:60ch}

/* Hero (home) */
.hero{padding-block:56px 40px;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:40px;align-items:center}
@media (max-width:900px){.hero{grid-template-columns:1fr;padding-block:36px 28px;gap:28px}}
.hero h1 .hl{color:var(--brand)}
.search{position:relative;margin-top:22px;max-width:520px}
.search input{width:100%;font:500 1.02rem var(--body);padding:15px 16px 15px 46px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--ink);box-shadow:var(--shadow)}
.search svg{position:absolute;left:15px;top:50%;transform:translateY(-50%);width:20px;height:20px;color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.chips a{font-size:.86rem;font-weight:600;text-decoration:none;color:var(--ink);background:var(--surface);border:1px solid var(--line);padding:6px 12px;border-radius:999px}
.chips a:hover{border-color:var(--brand);color:var(--brand)}
.stats{display:flex;gap:28px;flex-wrap:wrap;margin-top:28px}
.stats div{display:grid}
.stats b{font:700 1.5rem var(--display)}
.stats span{font-size:.85rem;color:var(--muted)}

/* Quick widget */
.quick{background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}
.quick .qhead{background:var(--brand);color:var(--brand-ink);padding:16px 20px;display:flex;justify-content:space-between;align-items:center;gap:10px}
.quick .qhead b{font:700 1.05rem var(--display)}
.quick .qhead span{font-size:.8rem;opacity:.85}
.quick .qbody{padding:20px;display:grid;gap:14px}
.quick .qres{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.quick .qres div{background:var(--soft);border-radius:10px;padding:12px}
.quick .qres small{display:block;color:var(--muted);font-size:.78rem}
.quick .qres strong{font:600 1.15rem var(--mono)}
.quick a.more{font-weight:600;text-decoration:none}

/* Cards */
.cat{margin-bottom:34px}
.cat h3{display:flex;align-items:center;gap:10px;margin-bottom:12px;font-size:1.1rem}
.cat h3 i{font-style:normal;font:600 .72rem var(--body);color:var(--muted);background:var(--soft);padding:2px 8px;border-radius:999px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:14px}
.card{display:flex;gap:14px;align-items:flex-start;text-decoration:none;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;transition:border-color .15s,transform .15s}
.card:hover{border-color:var(--brand);transform:translateY(-2px)}
.card .ic{flex:0 0 42px;height:42px;border-radius:10px;display:grid;place-items:center;background:var(--soft);color:var(--brand);font:700 1rem var(--display)}
.card h4{margin:0 0 3px;font:700 1.02rem var(--display)}
.card p{margin:0;font-size:.9rem;color:var(--muted)}
.card[hidden]{display:none}
.noresult{color:var(--muted)}

/* Features */
.feats{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr));gap:20px}
.feat h3{font-size:1.05rem}
.feat p{color:var(--muted);font-size:.94rem;margin:0}
.feat .dot{width:36px;height:36px;border-radius:10px;background:var(--gold-soft);color:var(--gold);display:grid;place-items:center;font-weight:800;margin-bottom:10px}

/* Tables */
.tbl{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:.93rem}
th,td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);white-space:nowrap}
th{font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);background:var(--raised)}
tr:last-child td{border-bottom:0}
td.r,th.r{text-align:right}
td.num{font-family:var(--mono);font-variant-numeric:tabular-nums}
tr.on td{background:var(--soft);color:var(--brand);font-weight:600}

/* Calculator page */
.crumbs{font-size:.86rem;color:var(--muted);padding-top:22px}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--brand)}
.page-head{padding-block:10px 22px}
.page-head .meta{display:flex;gap:14px;flex-wrap:wrap;font-size:.84rem;color:var(--muted);margin-top:4px}
.page-head .meta span{display:inline-flex;align-items:center;gap:6px}
.page-head .meta span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ok)}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px;align-items:start;padding-bottom:56px}
@media (max-width:980px){.layout{grid-template-columns:1fr}}
.tool{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:22px;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:var(--shadow)}
@media (max-width:720px){.tool{grid-template-columns:1fr;padding:18px}}
.fields{display:grid;gap:15px;align-content:start}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:420px){.row2{grid-template-columns:1fr}}
label{display:grid;gap:6px;font-weight:600;font-size:.88rem}
label small{font-weight:400;color:var(--muted)}
input,select{font:500 1rem var(--mono);padding:11px 13px;border:1px solid var(--line);border-radius:10px;background:var(--raised);color:var(--ink);width:100%;min-width:0}
input:focus,select:focus{border-color:var(--brand)}
.seg{display:flex;gap:6px;flex-wrap:wrap}
.seg label{display:flex;align-items:center;gap:7px;font-weight:500;border:1px solid var(--line);border-radius:9px;padding:8px 12px;cursor:pointer;background:var(--raised)}
.seg input{width:auto}
.slip{background:var(--soft);border-radius:14px;padding:20px;display:flex;flex-direction:column;gap:12px;min-width:0}
.big .k{font-size:.76rem;text-transform:uppercase;letter-spacing:.09em;color:var(--muted);font-weight:700}
.big .v{font:600 clamp(1.7rem,4vw,2.4rem)/1.15 var(--mono);color:var(--brand);font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.lines{display:grid;border-top:1px dashed var(--line)}
.lines div{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px dashed var(--line);font-size:.93rem}
.lines div span:last-child{font-family:var(--mono);font-variant-numeric:tabular-nums;text-align:right}
.note{font-size:.82rem;color:var(--muted);margin:0}
.pill{display:inline-block;font:700 .76rem var(--body);padding:4px 10px;border-radius:999px;background:var(--gold-soft);color:var(--gold);width:fit-content}
.pill.ok{background:color-mix(in srgb,var(--ok) 15%,transparent);color:var(--ok)}
.pill.warn{background:color-mix(in srgb,var(--warn) 15%,transparent);color:var(--warn)}
.pill.bad{background:color-mix(in srgb,var(--bad) 15%,transparent);color:var(--bad)}
.meter{height:10px;border-radius:999px;background:linear-gradient(90deg,#5aa9e6 0 18%,var(--ok) 18% 50%,var(--warn) 50% 70%,var(--bad) 70%);position:relative}
.meter i{position:absolute;top:-4px;width:4px;height:18px;border-radius:2px;background:var(--ink);transform:translateX(-50%)}

/* Article content */
.content{margin-top:36px;display:grid;gap:34px}
.content section{max-width:72ch}
.content p,.content li{color:var(--ink)}
.content ol,.content ul{padding-left:1.2em;margin:0 0 12px;display:grid;gap:6px}
.formula{font-family:var(--mono);background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--gold);border-radius:8px;padding:14px 16px;overflow-x:auto;font-size:.95rem}
.example{background:var(--gold-soft);border-radius:12px;padding:16px 18px}
.example p:last-child{margin:0}
.faq details{border-bottom:1px solid var(--line);padding:14px 0}
.faq summary{font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font:600 1.2rem var(--mono);color:var(--brand)}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:10px 0 0;color:var(--muted)}

/* Sidebar */
aside.side{position:sticky;top:84px;display:grid;gap:16px}
@media (max-width:980px){aside.side{position:static}}
.box{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px}
.box h3{font-size:1rem;margin-bottom:10px}
.box ul{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.box li a{display:flex;justify-content:space-between;text-decoration:none;color:var(--ink);padding:8px 10px;border-radius:8px;font-size:.93rem}
.box li a:hover,.box li a[aria-current]{background:var(--soft);color:var(--brand)}
.box.gold{background:var(--gold-soft);border-color:transparent}
.box.gold p{font-size:.9rem;margin:0}

/* Plain pages */
.prose{max-width:72ch;padding-block:10px 64px}
.prose h2{margin-top:28px;font-size:1.35rem}
.prose ul{padding-left:1.2em}
.copyline{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.btn{font:600 .92rem var(--body);border:0;border-radius:10px;padding:10px 16px;background:var(--brand);color:var(--brand-ink);cursor:pointer;text-decoration:none;display:inline-block}
.btn.ghost{background:transparent;color:var(--brand);border:1px solid var(--line)}

/* Footer */
.site-foot{background:var(--surface);border-top:1px solid var(--line);padding-block:44px 28px;margin-top:20px}
.foot-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:28px}
@media (max-width:780px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:420px){.foot-grid{grid-template-columns:1fr}}
.foot-grid h4{font:700 .82rem var(--body);text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 10px}
.foot-grid ul{list-style:none;margin:0;padding:0;display:grid;gap:7px}
.foot-grid a{color:var(--ink);text-decoration:none;font-size:.93rem}
.foot-grid a:hover{color:var(--brand)}
.foot-grid p{color:var(--muted);font-size:.9rem;max-width:36ch}
.foot-bottom{margin-top:30px;padding-top:18px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:.84rem;color:var(--muted)}

@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
.tool>*,.layout>*,.hero>*,.row2>*{min-width:0}
.tool .tbl th,.tool .tbl td{white-space:normal}
.content>*,.cards>*{min-width:0}