/* AsphaltCalculatorPrice — style v2 */
/* Any web font is loaded swap-first so text never blocks rendering (FOIT-safe). */
@font-face{
  font-family:"ACP Sans";
  font-style:normal;
  font-weight:400 700;
  font-display:swap;
  src:local("Segoe UI"),local("Roboto"),local("Helvetica Neue"),local("Arial");
}
:root{
  --ink:#12161c; --ink-2:#3d4653; --ink-3:#6b7684;
  --line:#e3e7ec; --line-2:#cfd6de;
  --bg:#ffffff; --bg-2:#f6f8fa; --bg-3:#eef2f6;
  --accent:#c8551b; --accent-2:#a3410f; --accent-soft:#fdf1ea;
  --ok:#1c7a4a;
  --radius:10px; --maxw:1120px;
  --font:"ACP Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);
  font-size:17px;line-height:1.65}
.container{max-width:var(--maxw);margin:0 auto;padding:1.5rem 1rem 3rem}
img{max-width:100%;height:auto}
a{color:var(--accent-2)}
a:hover{color:var(--accent)}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;
  padding:.6rem 1rem;z-index:100}
.skip-link:focus{left:0}

/* header */
.site-header{border-bottom:1px solid var(--line);background:var(--bg);
  position:sticky;top:0;z-index:50}
.header-inner{max-width:var(--maxw);margin:0 auto;padding:.7rem 1rem;
  display:flex;align-items:center;gap:1rem;flex-wrap:wrap}
.brand{font-weight:700;text-decoration:none;color:var(--ink);display:flex;
  align-items:center;gap:.5rem;font-size:1.02rem;white-space:nowrap}
.brand-mark{width:18px;height:18px;border-radius:4px;
  background:linear-gradient(135deg,var(--accent),#5b6470);display:inline-block}
.nav-toggle{display:none;margin-left:auto;align-items:center;gap:.4rem;
  padding:.4rem .7rem;border:1px solid var(--line-2);border-radius:7px;
  background:#fff;color:var(--ink-2);font:inherit;font-size:.9rem;font-weight:600;cursor:pointer}
.nav-toggle .bars{display:inline-block;width:16px;height:12px;position:relative}
.nav-toggle .bars::before,.nav-toggle .bars::after,.nav-toggle .bars span{
  content:"";position:absolute;left:0;right:0;height:2px;background:var(--ink-2);border-radius:2px}
.nav-toggle .bars::before{top:0}.nav-toggle .bars span{top:5px}.nav-toggle .bars::after{top:10px}
.main-nav{flex:1}
.main-nav ul{list-style:none;display:flex;gap:.25rem;margin:0;padding:0;flex-wrap:wrap}
.main-nav a{display:block;padding:.35rem .6rem;border-radius:6px;text-decoration:none;
  color:var(--ink-2);font-size:.94rem}
.main-nav a:hover{background:var(--bg-3);color:var(--ink)}
.main-nav a.active{background:var(--accent-soft);color:var(--accent-2);font-weight:600}
.lang-switch{font-size:.85rem;color:var(--ink-3);white-space:nowrap}
.lang-switch a{color:var(--ink-3);text-decoration:none}
.lang-switch a:hover{color:var(--accent-2);text-decoration:underline}

/* breadcrumb */
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:.35rem;list-style:none;padding:0;
  margin:0 0 1.1rem;font-size:.85rem;color:var(--ink-3)}
.breadcrumb li+li::before{content:"\203A";margin-right:.35rem;color:var(--line-2)}
.breadcrumb a{color:var(--ink-3);text-decoration:none}
.breadcrumb a:hover{text-decoration:underline;color:var(--accent-2)}
.breadcrumb [aria-current]{color:var(--ink);font-weight:600}

/* typography */
h1{font-size:2.05rem;line-height:1.2;margin:.2rem 0 .8rem;letter-spacing:-.015em}
h2{font-size:1.42rem;line-height:1.3;margin:2.4rem 0 .7rem;padding-top:.4rem;
  letter-spacing:-.01em;border-top:1px solid var(--line)}
h3{font-size:1.13rem;margin:1.5rem 0 .5rem}
h4{font-size:1rem;margin:1.1rem 0 .4rem}
p{margin:0 0 1rem}
.lede{font-size:1.12rem;color:var(--ink-2);margin-bottom:1.4rem}
ul,ol{margin:0 0 1.1rem;padding-left:1.4rem}
li{margin-bottom:.35rem}
code{font-family:var(--mono);background:var(--bg-3);padding:.12em .35em;
  border-radius:4px;font-size:.9em}
.formula{background:var(--bg-2);border-left:3px solid var(--accent);
  padding:.9rem 1.1rem;margin:1.1rem 0;border-radius:0 var(--radius) var(--radius) 0;
  font-family:var(--mono);font-size:.95rem;overflow-x:auto}
.callout{background:var(--accent-soft);border:1px solid #f2d9c9;padding:1rem 1.1rem;
  border-radius:var(--radius);margin:1.2rem 0}
.callout p:last-child{margin-bottom:0}
.callout.quick{background:var(--bg-2);border-color:var(--line)}
blockquote{margin:1.2rem 0;padding:.2rem 0 .2rem 1.1rem;border-left:3px solid var(--line-2);
  color:var(--ink-2)}

/* TOC */
.toc{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);
  padding:1rem 1.2rem;margin:0 0 1.8rem}
.toc-h{font-weight:700;font-size:.82rem;text-transform:uppercase;letter-spacing:.06em;
  color:var(--ink-3);margin:0 0 .5rem}
.toc ol{columns:2;column-gap:2rem;margin:0;padding-left:1.2rem;font-size:.93rem}
.toc a{color:var(--ink-2);text-decoration:none}
.toc a:hover{color:var(--accent-2);text-decoration:underline}

/* tables */
.table-wrap{overflow-x:auto;margin:1.1rem 0;border:1px solid var(--line);
  border-radius:var(--radius)}
table{border-collapse:collapse;width:100%;font-size:.92rem;min-width:520px}
caption{text-align:left;padding:.7rem .9rem;font-size:.86rem;color:var(--ink-3);
  border-bottom:1px solid var(--line)}
th,td{padding:.6rem .8rem;text-align:left;border-bottom:1px solid var(--line);
  vertical-align:top}
thead th{background:var(--bg-3);font-size:.82rem;text-transform:uppercase;
  letter-spacing:.04em;color:var(--ink-2);white-space:nowrap}
tbody tr:last-child td{border-bottom:0}
tbody tr:nth-child(even){background:var(--bg-2)}

/* calculator */
.calc-wrap{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.2rem;margin:1.4rem 0 1.8rem}
.calc-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:1.4rem}
.calc-form h3,.calc-results h3{margin-top:0;font-size:1rem;text-transform:uppercase;
  letter-spacing:.05em;color:var(--ink-3);font-weight:700}
.calc-form label{display:block;font-size:.86rem;font-weight:600;margin:.7rem 0 .25rem;
  color:var(--ink-2)}
.calc-form input,.calc-form select{width:100%;padding:.55rem .65rem;border:1px solid var(--line-2);
  border-radius:7px;font-size:.98rem;font-family:inherit;background:#fff;color:var(--ink)}
.calc-form input:focus,.calc-form select:focus{outline:2px solid var(--accent);
  outline-offset:1px;border-color:var(--accent)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:.7rem}
.row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:.7rem}
.hide{display:none!important}
fieldset.sec{border:1px solid var(--line-2);border-radius:8px;padding:.7rem .9rem 1rem;
  margin:.8rem 0;background:#fff}
fieldset.sec legend{font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;
  font-weight:700;color:var(--ink-3);padding:0 .35rem}
details.adv{margin:.9rem 0;border:1px solid var(--line-2);border-radius:8px;background:#fff}
details.adv summary{padding:.6rem .8rem;font-weight:600;cursor:pointer;font-size:.92rem}
.adv-grid{padding:0 .8rem .8rem;display:grid;grid-template-columns:1fr 1fr;gap:.5rem 1rem}
.adv-grid label{margin-top:.3rem}
.btn-row{display:flex;gap:.5rem;margin-top:1rem;flex-wrap:wrap}
.btn{padding:.55rem 1rem;border-radius:7px;border:1px solid var(--line-2);cursor:pointer;
  font-size:.9rem;font-family:inherit;font-weight:600;background:#fff;color:var(--ink-2)}
.btn:hover{background:var(--bg-3);color:var(--ink)}
.btn-ghost{background:transparent;border-style:dashed;color:var(--ink-3);
  width:100%;margin-top:.3rem}
.btn-sm{padding:.35rem .7rem;font-size:.82rem;width:auto;margin-top:.6rem}
/* primary call-to-action buttons */
.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-2);border-color:var(--accent-2);color:#fff}
/* hero jump-to-calculator button (below the H1/intro) */
.hero-cta{margin:.2rem 0 1.1rem}
.hero-cta .btn-jump{display:inline-flex;align-items:center;gap:.4rem;
  text-decoration:none;padding:.7rem 1.3rem;font-size:1rem;border-radius:8px}
@media(max-width:860px){.hero-cta .btn-jump{display:flex;justify-content:center;width:100%}}
.calc-cta{display:flex;gap:.6rem;flex-wrap:wrap;margin:.4rem 0 1rem}
.calc-cta .btn{flex:1 1 auto;min-width:9rem;text-align:center;padding:.7rem 1rem;font-size:.98rem}
.calc-cta .btn-primary{flex:2 1 12rem}
.recalc-row{margin-top:1rem;text-align:center}
.recalc-row .btn{width:100%;padding:.7rem 1rem;font-size:.98rem}
/* favourites reminder */
.fav-tip{display:none;margin:1rem 0 0;padding:.7rem .85rem;border:1px solid var(--line-2);
  border-left:3px solid var(--accent);border-radius:8px;background:var(--accent-soft);
  font-size:.88rem;color:var(--ink-2);align-items:flex-start;gap:.6rem;line-height:1.5}
.fav-tip.show{display:flex}
.fav-tip strong{color:var(--ink)}
.fav-tip .fav-x{margin-left:auto;flex:none;border:0;background:transparent;cursor:pointer;
  font-size:1.1rem;line-height:1;color:var(--ink-3);padding:0 .2rem}
.calc-results{background:#fff;border:1px solid var(--line);border-radius:8px;padding:1rem 1.1rem;
  min-height:19rem;contain:layout}
.result-item{display:flex;justify-content:space-between;gap:.8rem;padding:.5rem 0;
  border-bottom:1px solid var(--line);font-size:.92rem;min-height:2rem;align-items:baseline}
.result-item:last-of-type{border-bottom:0}
.result-label{color:var(--ink-3)}
.result-value{font-weight:600;text-align:right;font-variant-numeric:tabular-nums;
  min-width:5.5rem;display:inline-block}
.result-value.highlight{color:var(--accent-2);font-size:1.02rem}
.result-item.total .result-value{font-size:1.1rem}
.calc-note{font-size:.82rem;color:var(--ink-3);margin:.8rem 0 0;line-height:1.5}

/* presets */
.presets{display:flex;gap:.5rem;flex-wrap:wrap;margin:.9rem 0 1.2rem}
.presets button{padding:.4rem .8rem;font-size:.85rem;border-radius:99px;
  border:1px solid var(--line-2);background:#fff;cursor:pointer;font-family:inherit;
  color:var(--ink-2)}
.presets button:hover{border-color:var(--accent);color:var(--accent-2);background:var(--accent-soft)}

/* converter */
.conv-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));
  gap:.8rem;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--radius);padding:1.1rem;margin:1.3rem 0}
.conv-grid label{display:block;font-size:.82rem;font-weight:600;margin-bottom:.25rem;
  color:var(--ink-2)}
.conv-grid input{width:100%;padding:.5rem .6rem;border:1px solid var(--line-2);
  border-radius:7px;font-size:.95rem;font-family:var(--mono)}

/* cards */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(238px,1fr));
  gap:.9rem;margin:1.1rem 0 1.6rem}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:.95rem 1rem;
  background:var(--bg);transition:border-color .15s}
.card:hover{border-color:var(--line-2)}
.card h3{margin:0 0 .3rem;font-size:1rem}
.card h3 a{text-decoration:none}
.card h3 a:hover{text-decoration:underline}
.card p{margin:0;font-size:.88rem;color:var(--ink-3);line-height:1.5}

/* faq */
.faq details{border:1px solid var(--line);border-radius:8px;margin-bottom:.55rem;
  background:var(--bg)}
.faq summary{padding:.75rem 1rem;cursor:pointer;font-weight:600;font-size:.97rem;
  list-style:none;position:relative;padding-right:2.4rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:1rem;top:.7rem;
  font-size:1.15rem;color:var(--ink-3);font-weight:400}
.faq details[open] summary::after{content:"\2212"}
.faq details>div{padding:0 1rem 1rem;font-size:.95rem;color:var(--ink-2)}
.faq details>div p:last-child{margin-bottom:0}

/* meta + sources */
.page-meta{font-size:.82rem;color:var(--ink-3);border-top:1px solid var(--line);
  padding-top:.8rem;margin-top:2.2rem;display:flex;gap:1.2rem;flex-wrap:wrap}
.page-meta a{color:var(--ink-3)}
ul.sources{font-size:.92rem}
.data-freshness{background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--radius);padding:.9rem 1.1rem;margin:1.2rem 0;font-size:.9rem}
.data-freshness p{margin:0 0 .3rem}
.data-freshness p:last-child{margin:0}

/* figures */
figure{margin:1.4rem 0;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;background:var(--bg-2)}
figure svg,figure img{display:block;width:100%;height:auto;background:#fff}
figcaption{padding:.65rem .9rem;font-size:.85rem;color:var(--ink-3);
  border-top:1px solid var(--line)}

/* glossary */
.gloss dt{font-weight:700;margin-top:1rem}
.gloss dd{margin:.2rem 0 0;color:var(--ink-2);font-size:.95rem}

/* footer */
.site-footer{border-top:1px solid var(--line);background:var(--bg-2);margin-top:2rem}
.footer-inner{max-width:var(--maxw);margin:0 auto;padding:2.2rem 1rem 1.4rem;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(178px,1fr));gap:1.6rem}
.footer-col h4{margin:0 0 .55rem;font-size:.8rem;text-transform:uppercase;
  letter-spacing:.06em;color:var(--ink-3)}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:.3rem}
.footer-col a{color:var(--ink-2);text-decoration:none;font-size:.89rem}
.footer-col a:hover{color:var(--accent-2);text-decoration:underline}
.footer-col p{font-size:.88rem;color:var(--ink-3);margin:0}
.footer-bottom{max-width:var(--maxw);margin:0 auto;padding:1rem;border-top:1px solid var(--line);
  font-size:.82rem;color:var(--ink-3)}

@media(max-width:860px){
  .calc-grid{grid-template-columns:1fr}
  .toc ol{columns:1}
  .adv-grid{grid-template-columns:1fr}
  h1{font-size:1.65rem}
  h2{font-size:1.25rem}
  body{font-size:16px}
  /* collapsible header nav */
  .nav-toggle{display:inline-flex}
  .header-inner{gap:.6rem}
  .main-nav,.header-inner .lang-switch{flex-basis:100%;display:none}
  .site-header.nav-open .main-nav,
  .site-header.nav-open .lang-switch{display:block}
  .site-header.nav-open .main-nav ul{flex-direction:column;gap:.15rem;
    margin-top:.4rem;border-top:1px solid var(--line);padding-top:.5rem}
  .site-header.nav-open .main-nav a{padding:.6rem .5rem;font-size:1rem}
  .site-header.nav-open .lang-switch{margin-top:.5rem;padding-top:.5rem;
    border-top:1px solid var(--line);white-space:normal;line-height:1.9}
  .calc-cta .btn,.calc-cta .btn-primary{flex-basis:100%}
}
@media print{
  .site-header,.site-footer,.btn-row,.breadcrumb,.toc,.card-grid,.presets,
  .main-nav,.lang-switch,.skip-link{display:none!important}
  .calc-wrap{border:1px solid #000;background:#fff}
  body{font-size:12pt}
  a[href^="http"]::after{content:" (" attr(href) ")";font-size:.8em;color:#555}
}