@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@600;800&family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@400;500;600&display=swap');

:root{
  --ink:#1A1A18;
  --ink-70:#55534d;
  --ink-40:#8d8a82;
  --paper:#E9E7E2;
  --card:#FFFFFF;
  --line:#CFCCC4;
  --tape:#F2C230;
  --c-mat:#2E5EAA;
  --c-vaerk:#B87A04;
  --c-hus:#B4472E;
  --c-penge:#2E7D5B;
  --c-andet:#5B4B8A;
  --r:4px;
  --shadow:3px 3px 0 var(--ink);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"IBM Plex Sans",system-ui,sans-serif;line-height:1.5}
a{color:inherit;text-underline-offset:3px}
h1,h2,h3{font-family:"Archivo",system-ui,sans-serif;letter-spacing:-.02em;margin:0}
.wrap{width:min(1320px,calc(100% - 3rem));margin-inline:auto}
.tape{height:34px;background:var(--tape);border-block:2px solid var(--ink);position:relative;overflow:hidden}
.tape::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(90deg,var(--ink) 0 1.5px,transparent 1.5px 20px),repeating-linear-gradient(90deg,var(--ink) 0 2px,transparent 2px 100px);background-size:20px 11px,100px 20px;background-repeat:repeat-x;opacity:.85}
.site-head{border-bottom:2px solid var(--ink);background:var(--paper)}
.nav{height:62px;display:flex;align-items:center;justify-content:space-between;gap:1rem}
.nav nav{display:flex;gap:1rem;font-size:.9rem}
.brand{font-family:"Archivo";font-weight:800;text-decoration:none}
.brand span{color:var(--ink-40)}
.hero{padding:4.2rem 0 3rem}
.eyebrow{font-family:"IBM Plex Mono";font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-70);display:flex;align-items:center;gap:.6rem;margin-bottom:1rem}
.eyebrow::before{content:"";width:44px;height:2px;background:var(--ink)}
h1{font-weight:800;font-size:clamp(3rem,10vw,7rem);line-height:.88;text-transform:uppercase}
h1 .dk{display:inline-block;background:var(--tape);border:2px solid var(--ink);font-size:.22em;vertical-align:.9em;padding:.15em .45em;transform:rotate(-2deg);margin-left:.25em}
.tagline{max-width:50ch;font-size:1.08rem;color:var(--ink-70);margin:1.4rem 0 0}
.notice{display:inline-block;margin-top:1.5rem;background:var(--card);border:2px solid var(--ink);box-shadow:var(--shadow);padding:.75rem .9rem;font-family:"IBM Plex Mono";font-size:.82rem}
.section{padding:2.5rem 0 5rem}
.section-rule{height:6px;background:var(--c-vaerk);border:2px solid var(--ink)}
.section-head{display:flex;align-items:baseline;gap:1rem;margin:1rem 0 1.2rem}
.section-head h2{font-size:clamp(1.8rem,5vw,2.7rem);text-transform:uppercase}
.mono{font-family:"IBM Plex Mono";font-size:.78rem;color:var(--ink-40)}
.placeholder-card{background:var(--card);border:2px solid var(--ink);box-shadow:var(--shadow);padding:1.2rem;max-width:620px}
.placeholder-card p{margin:.35rem 0 0;color:var(--ink-70)}
.footer{border-top:2px solid var(--ink);padding:2.5rem 0 3.5rem;color:var(--ink-70);font-size:.92rem}
.footer strong{color:var(--ink)}
.footer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
@media(max-width:760px){
  .wrap{width:min(100% - 1.4rem,1320px)}
  .nav{height:auto;padding:.8rem 0;align-items:flex-start}
  .nav nav{font-size:.82rem}
  .hero{padding-top:3rem}
  .footer-grid{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}


/* ===== Calculator pages ===== */
.breadcrumbs{padding-top:1.25rem;font-family:"IBM Plex Mono";font-size:.76rem;color:var(--ink-70)}
.breadcrumbs a{text-decoration:none}
.breadcrumbs a:hover{text-decoration:underline}
.calc-hero{padding:1.8rem 0 1.1rem}
.calc-hero h1{font-size:clamp(2.6rem,7vw,5.2rem);line-height:.92}
.calc-lead{max-width:66ch;margin:1.1rem 0 0;color:var(--ink-70);font-size:1.04rem}
.calc-shell{display:grid;grid-template-columns:minmax(0,2fr) minmax(340px,.95fr);gap:1.15rem;align-items:start;margin:1.2rem auto 2.2rem}
.calc-panel,.result-panel,.content-card,.related-card{background:var(--card);border:2px solid var(--ink);border-radius:var(--r);box-shadow:var(--shadow)}
.calc-panel{padding:1rem}
.tablist{display:flex;flex-wrap:wrap;gap:.4rem;margin-bottom:1rem}
.tab{border:1.5px solid var(--ink);background:#fff;border-radius:99px;padding:.4rem .75rem;font-family:"IBM Plex Mono";font-size:.78rem;cursor:pointer}
.tab:hover{background:#f5f2eb}
.tab[aria-selected="true"]{background:var(--c-mat);border-color:var(--c-mat);color:#fff}
.fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.85rem}
.field{min-width:0}
.field.full{grid-column:1/-1}
.field label{display:block;font-family:"IBM Plex Mono";font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-70);margin-bottom:.3rem}
.input-wrap{display:flex;align-items:center;background:#fff;border:1.5px solid var(--ink);border-radius:var(--r);overflow:hidden}
.input-wrap:focus-within{box-shadow:inset 0 0 0 2px var(--c-mat)}
.input-wrap input,.input-wrap select{width:100%;border:0;outline:0;background:none;padding:.65rem .7rem;font-family:"IBM Plex Mono";font-size:1rem;min-width:0}
.input-unit{padding:0 .65rem;color:var(--ink-40);font-family:"IBM Plex Mono";font-size:.82rem;border-left:1.5px solid var(--line);white-space:nowrap}
.field-help{font-size:.78rem;color:var(--ink-70);margin:.28rem 0 0}
.result-panel{background:var(--ink);color:#F3F1EC;padding:1.05rem;position:sticky;top:1rem}
.result-kicker{font-family:"IBM Plex Mono";font-size:.71rem;letter-spacing:.1em;text-transform:uppercase;color:#aaa69d}
.result-big{font-family:"Archivo";font-weight:800;font-size:clamp(2rem,6vw,3.2rem);line-height:1.02;color:var(--tape);margin:.2rem 0 .75rem;word-break:break-word}
.result-rows{margin:0;padding:0;list-style:none}
.result-row{display:flex;justify-content:space-between;gap:1rem;border-top:1px dotted #4a4842;padding:.5rem 0;font-family:"IBM Plex Mono";font-size:.84rem}
.result-row span:first-child{color:#aaa69d}
.result-row strong{text-align:right}
.result-note{font-size:.78rem;color:#aaa69d;margin:.75rem 0 0}
.copy-btn{margin-top:.85rem;width:100%;border:1.5px solid var(--tape);background:transparent;color:var(--tape);padding:.55rem .8rem;border-radius:var(--r);font-family:"IBM Plex Mono";cursor:pointer}
.copy-btn:hover{background:var(--tape);color:var(--ink)}
.article{max-width:920px;padding-bottom:2rem}
.article h2{font-size:clamp(1.45rem,4vw,2rem);text-transform:uppercase;margin:2.5rem 0 .75rem}
.article h3{font-family:"IBM Plex Sans";font-size:1.05rem;margin:1.5rem 0 .4rem}
.article p,.article li{color:var(--ink-70)}
.article strong{color:var(--ink)}
.formula{background:var(--card);border-left:6px solid var(--c-mat);border-block:2px solid var(--ink);border-right:2px solid var(--ink);padding:1rem 1.1rem;font-family:"IBM Plex Mono";overflow:auto}
.table-wrap{overflow-x:auto;border:2px solid var(--ink);background:var(--card);box-shadow:var(--shadow);border-radius:var(--r)}
.ref-table{width:100%;border-collapse:collapse;min-width:560px}
.ref-table th,.ref-table td{text-align:left;padding:.7rem .8rem;border-bottom:1px solid var(--line)}
.ref-table th{font-family:"IBM Plex Mono";font-size:.75rem;text-transform:uppercase;background:#f6f3ec}
.ref-table tr:last-child td{border-bottom:0}
.faq details{background:var(--card);border:2px solid var(--ink);border-bottom:0;padding:.85rem 1rem}
.faq details:first-of-type{border-radius:var(--r) var(--r) 0 0}
.faq details:last-of-type{border-bottom:2px solid var(--ink);border-radius:0 0 var(--r) var(--r)}
.faq summary{font-weight:600;cursor:pointer}
.faq p{margin:.55rem 0 .15rem}
.related{padding:1.5rem 0 4rem}
.related h2{font-size:1.45rem;text-transform:uppercase;margin-bottom:.8rem}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:.85rem}
.related-card{padding:1rem;text-decoration:none;display:block}
.related-card:hover{transform:translate(-2px,-2px);box-shadow:5px 5px 0 var(--ink)}
.related-card small{font-family:"IBM Plex Mono";color:var(--ink-40)}
.related-card strong{display:block;margin-top:.2rem}
.category-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin-top:1.2rem}
.tool-card{display:block;text-decoration:none;background:var(--card);border:2px solid var(--ink);box-shadow:var(--shadow);border-radius:var(--r);padding:1rem}
.tool-card:hover{transform:translate(-2px,-2px);box-shadow:5px 5px 0 var(--ink)}
.tool-card .tool-kicker{font-family:"IBM Plex Mono";font-size:.72rem;color:var(--ink-40);text-transform:uppercase;letter-spacing:.07em}
.tool-card h3{font-family:"IBM Plex Sans";font-size:1.05rem;margin-top:.25rem}
.tool-card p{font-size:.86rem;color:var(--ink-70);margin:.35rem 0 0}
@media(max-width:820px){
  .calc-shell{grid-template-columns:1fr}
  .result-panel{position:static}
  .category-grid,.related-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .fields{grid-template-columns:1fr}
  .category-grid,.related-grid{grid-template-columns:1fr}
  .tab{font-size:.72rem;padding:.38rem .58rem}
}

.category-hero{padding:2.8rem 0 1.8rem}
.category-hero h1{font-size:clamp(2.8rem,7vw,5.4rem)}
.section-head-link{margin-left:auto;font-family:"IBM Plex Mono";font-size:.8rem;text-decoration:none}
.section-head-link:hover{text-decoration:underline}