/* ============================================================
   AnkerLabs — ankerlabs.com
   Register: professional laboratory supplier. Deep petrol and
   light, generous type, reassuring rather than clever.
   ============================================================ */

@font-face{font-family:Jakarta;src:url(fonts/jakarta-400.woff2) format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:Jakarta;src:url(fonts/jakarta-500.woff2) format('woff2');font-weight:500;font-display:swap}
@font-face{font-family:Jakarta;src:url(fonts/jakarta-600.woff2) format('woff2');font-weight:600;font-display:swap}
@font-face{font-family:Jakarta;src:url(fonts/jakarta-700.woff2) format('woff2');font-weight:700;font-display:swap}
@font-face{font-family:Jakarta;src:url(fonts/jakarta-800.woff2) format('woff2');font-weight:800;font-display:swap}
@font-face{font-family:Plex;src:url(fonts/plexmono-400.woff2) format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:Plex;src:url(fonts/plexmono-500.woff2) format('woff2');font-weight:500;font-display:swap}

:root{
  /* petrol family */
  --navy-900:#0C2326;  --navy-800:#123033;  --navy-700:#194247;
  --steel:#1F7A72;     --steel-600:#1A6961;  --steel-300:#8FC0BA;
  --steel-tint:#E6F1EF;

  /* light neutrals, tinted toward petrol */
  --paper:#FFFFFF;     --mist:#F2F6F5;      --mist-2:#E2ECEA;
  --line:#D9E4E2;      --line-2:#C0D2CF;

  /* text */
  --ink:#11231F;       --ink-2:#4A625E;     --ink-3:#7C918D;

  --ok:#2E7D57;        --warn:#A8722C;

  --sp-1:4px;  --sp-2:8px;  --sp-3:12px; --sp-4:16px; --sp-5:24px;
  --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:88px; --sp-10:120px;

  --r-1:6px; --r-2:10px; --r-3:16px; --r-4:24px; --r-pill:100px;

  --dur-fast:150ms; --dur-base:250ms;
  --ease-out:cubic-bezier(.16,1,.3,1);

  --shadow-1:0 1px 2px rgba(17,35,31,.06), 0 2px 8px rgba(17,35,31,.05);
  --shadow-2:0 2px 4px rgba(17,35,31,.06), 0 12px 32px rgba(17,35,31,.09);

  --shell:1200px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:120px}
body{
  background:var(--paper);color:var(--ink);
  font-family:Jakarta,system-ui,sans-serif;font-weight:400;
  font-size:17px;line-height:1.7;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
:focus-visible{outline:2px solid var(--steel);outline-offset:3px;border-radius:var(--r-1)}

.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--sp-5)}

/* ---------- type ---------- */
h1,h2,h3,h4{font-weight:800;letter-spacing:-.028em;line-height:1.12;text-wrap:balance}
h1{font-size:clamp(2.15rem,1.4rem + 3vw,3.4rem)}
h2{font-size:clamp(1.7rem,1.2rem + 2.1vw,2.65rem)}
h3{font-size:clamp(1.2rem,1.05rem + .6vw,1.5rem);letter-spacing:-.018em}
h4{font-size:1.05rem;letter-spacing:-.01em}
p{text-wrap:pretty}
.lede{font-size:clamp(1rem,.97rem + .3vw,1.1rem);color:var(--ink-2);line-height:1.72}
.mono{font-family:Plex,ui-monospace,monospace;font-variant-numeric:tabular-nums}

.eyebrow{
  display:inline-flex;align-items:center;gap:12px;
  font-family:Plex;font-size:.72rem;font-weight:500;letter-spacing:.2em;
  text-transform:uppercase;color:var(--steel);
}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--steel);flex:none}
.center .eyebrow{justify-content:center}
.center{text-align:center}
.center .prose{margin-inline:auto}
.prose{max-width:66ch}

/* ---------- compliance strip ---------- */
.compliance{
  background:var(--steel-600);color:#fff;text-align:center;
  padding:11px var(--sp-4);font-size:.9rem;font-weight:600;letter-spacing:.005em;
}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:var(--paper);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;gap:var(--sp-6);height:78px}
.brand{display:flex;align-items:center;gap:12px;margin-right:auto}
.brand svg{width:34px;height:auto;flex:none}
.brand-t{line-height:1.05}
.brand-t b{display:block;font-size:1.15rem;font-weight:800;letter-spacing:.01em;color:var(--navy-900)}
.brand-t .lb{font-style:normal;font-weight:800;color:var(--steel)}
.brand-t > span{
  display:block;font-family:Plex;font-size:.53rem;letter-spacing:.19em;
  text-transform:uppercase;color:var(--ink-3);
}
.nav-links{display:flex;gap:var(--sp-2);align-items:center}
.nav-links a{
  font-size:.95rem;font-weight:500;color:var(--ink-2);
  padding:9px 4px;margin-inline:12px;border-bottom:2px solid transparent;
  transition:background var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out);
}
@media (hover:hover){.nav-links a:hover{color:var(--ink);border-bottom-color:var(--line-2)}}
.nav-links a[aria-current="page"]{color:var(--navy-800);font-weight:700;border-bottom-color:var(--steel)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:50px;padding:0 var(--sp-6);border-radius:var(--r-1);
  font-size:.96rem;font-weight:600;white-space:nowrap;
  transition:background var(--dur-fast) var(--ease-out),
             border-color var(--dur-fast) var(--ease-out),
             color var(--dur-fast) var(--ease-out),
             transform var(--dur-fast) var(--ease-out);
}
.btn:active{transform:scale(.975)}
.btn-primary{background:var(--steel-600);color:#fff}
@media (hover:hover){.btn-primary:hover{background:var(--navy-700)}}
.btn-quiet{border:1.5px solid var(--line-2);color:var(--navy-700);background:var(--paper)}
@media (hover:hover){.btn-quiet:hover{border-color:var(--steel);background:var(--steel-tint)}}
.btn-onnavy{background:#fff;color:var(--navy-800)}
@media (hover:hover){.btn-onnavy:hover{background:var(--steel-tint)}}
.btn-sm{min-height:44px;padding:0 var(--sp-5);font-size:.9rem}
.btn svg{width:18px;height:18px;flex:none}

/* ---------- sections ---------- */
section{padding-block:clamp(var(--sp-8),6vw,var(--sp-10))}
.band-mist{background:var(--mist)}
.band-navy{background:var(--navy-900);color:#fff}
.sec-head{margin-bottom:var(--sp-8)}
.sec-head .eyebrow{margin-bottom:var(--sp-5)}
.sec-head h2{margin-bottom:var(--sp-4)}

/* ---------- hero ---------- */
.hero{
  background:
    radial-gradient(120% 90% at 88% 8%, rgba(31,122,114,.20), transparent 62%),
    linear-gradient(168deg, var(--navy-800) 0%, var(--navy-900) 62%, #0A1B2B 100%);
  color:#fff;padding-block:clamp(var(--sp-8),6vw,var(--sp-10));position:relative;overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(143,192,186,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143,192,186,.055) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(120% 100% at 20% 0%, #000, transparent 72%);
          mask-image:radial-gradient(120% 100% at 20% 0%, #000, transparent 72%);
}
.hero .shell{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1fr;gap:var(--sp-7);align-items:start}
@media (min-width:960px){
  .hero-grid{grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);gap:var(--sp-9)}
}
.hero h1{max-width:19ch;margin-bottom:var(--sp-6)}
.hero p{color:#C4DBD6;margin-bottom:var(--sp-5);max-width:60ch}
.hero .advisory{
  background:rgba(255,255,255,.055);border:1px solid rgba(143,192,186,.24);
  border-left:4px solid var(--steel-300);
  border-radius:var(--r-2);padding:var(--sp-5);margin-bottom:var(--sp-6);
  font-size:.93rem;line-height:1.68;color:#B9D2CC;max-width:62ch;
}
.hero .advisory b{color:#fff;font-weight:700}
.hero-cta{display:flex;flex-wrap:wrap;gap:var(--sp-3)}

/* the panel that replaces the reference site's login box */
/* hero side rail: numbered steps, flat on the dark, no floating card */
.rail{border-top:2px solid rgba(143,192,186,.4);padding-top:var(--sp-5)}
.rail h2{
  font-family:Plex;font-size:.72rem;font-weight:500;letter-spacing:.2em;
  text-transform:uppercase;color:var(--steel-300);margin-bottom:var(--sp-6);
}
.rail ol{list-style:none;display:grid;gap:var(--sp-5)}
.rail li{
  display:flex;gap:var(--sp-4);align-items:baseline;
  padding-bottom:var(--sp-5);border-bottom:1px solid rgba(143,192,186,.17);
}
.rail li:last-child{border-bottom:0;padding-bottom:0}
.rail li::before{
  content:"";flex:none;width:7px;height:7px;border-radius:2px;
  background:var(--steel-300);transform:translateY(-3px);
}
.rail li b{display:block;color:#fff;font-weight:700;font-size:1rem;margin-bottom:4px}
.rail li span{display:block;color:#B9D2CC;font-size:.91rem;line-height:1.55}

/* ---------- standards: asymmetric, heading sticks on the left ---------- */
.split{display:grid;grid-template-columns:1fr;gap:var(--sp-7)}
@media (min-width:940px){
  .split{grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:var(--sp-9)}
  .split-aside{position:sticky;top:120px}
}
.split-aside h2{margin-bottom:var(--sp-5)}
.split-aside .eyebrow{margin-bottom:var(--sp-5)}
.split-aside p{color:var(--ink-2)}
.split-aside .btn{margin-top:var(--sp-6)}
.entry{padding-bottom:var(--sp-7);margin-bottom:var(--sp-7);border-bottom:1px solid var(--line)}
.entry:last-child{padding-bottom:0;margin-bottom:0;border-bottom:0}
.entry-top{margin-bottom:var(--sp-4)}
.entry h3{margin:0}
.entry p{color:var(--ink-2);margin-bottom:var(--sp-4)}
.entry p:last-child{margin-bottom:0}
.entry-art{
  margin-top:var(--sp-5);border:1px solid var(--line);border-radius:var(--r-2);
  overflow:hidden;background:var(--mist);
}

/* ---------- feature cards ---------- */
.features{display:grid;grid-template-columns:1fr;gap:var(--sp-5)}
@media (min-width:820px){.features{grid-template-columns:repeat(3,1fr)}}
.feature{
  background:var(--paper);border:1px solid var(--line);border-top:3px solid var(--steel);
  padding:var(--sp-6);
}
.feature-ico{
  width:44px;height:44px;margin-bottom:var(--sp-5);
  display:flex;align-items:center;justify-content:flex-start;color:var(--steel);
}
.feature-ico svg{width:30px;height:30px}
.feature h3{font-size:1.15rem;margin-bottom:var(--sp-3)}
.feature p{color:var(--ink-2);font-size:.93rem;line-height:1.64}

/* ---------- FAQ ---------- */
.faq-shell{max-width:980px}
.faq-list{border-top:2px solid var(--navy-900)}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list summary{
  display:flex;align-items:flex-start;position:relative;
  padding:var(--sp-5) var(--sp-6) var(--sp-5) 0;cursor:pointer;list-style:none;
  color:var(--navy-900);font-size:1.02rem;font-weight:600;line-height:1.45;
  transition:color var(--dur-fast) var(--ease-out);
}
.faq-list summary::-webkit-details-marker{display:none}
@media (hover:hover){.faq-list summary:hover{color:var(--steel)}}
.faq-list summary::after{
  content:"";position:absolute;right:0;top:var(--sp-5);flex:none;width:14px;height:14px;
  margin-top:6px;
  background:
    linear-gradient(currentColor,currentColor) center/100% 1.8px no-repeat,
    linear-gradient(currentColor,currentColor) center/1.8px 100% no-repeat;
  color:var(--steel);
  transition:transform var(--dur-base) var(--ease-out);
}
.faq-list details[open] summary::after{transform:rotate(135deg)}
.faq-body{
  padding:0 var(--sp-8) var(--sp-6) 0;
  color:var(--ink-2);font-size:.96rem;line-height:1.7;
}
.faq-body p + p{margin-top:var(--sp-3)}
.faq-body a{color:var(--steel);text-decoration:underline;text-underline-offset:3px}
@media (max-width:600px){.faq-body{padding-right:var(--sp-5)}}

/* ---------- closing contact band ---------- */
.closing{
  display:grid;grid-template-columns:1fr;gap:var(--sp-6);align-items:center;
}
@media (min-width:880px){.closing{grid-template-columns:minmax(0,1fr) auto;gap:var(--sp-8)}}
.closing h2{margin-bottom:var(--sp-3)}
.closing p{color:#AAC5C0;max-width:56ch}
.closing-cta{display:flex;flex-direction:column;gap:var(--sp-3);align-items:stretch}
.closing-cta small{font-family:Plex;font-size:.76rem;color:var(--steel-300);text-align:center}

/* ---------- research use only flags ---------- */
.ruo{
  display:flex;gap:var(--sp-4);background:var(--steel-tint);
  border-left:4px solid var(--steel);border-radius:var(--r-2);
  padding:var(--sp-5);font-size:.9rem;line-height:1.65;color:var(--ink-2);
}
.ruo b{color:var(--navy-800);font-weight:700}
.band-navy .ruo,.quote .ruo{
  background:rgba(255,255,255,.06);border-left-color:var(--steel-300);color:#B9D2CC;
}
.band-navy .ruo b{color:#fff}
.ruo-inline{
  display:inline-flex;align-items:center;gap:8px;
  font-family:Plex;font-size:.68rem;font-weight:500;letter-spacing:.09em;
  text-transform:uppercase;color:var(--ink-3);
}
.ruo-inline::before{content:"";flex:none;width:6px;height:6px;border-radius:2px;background:var(--steel)}

/* ---------- article pages ---------- */
.page-head{background:var(--mist);border-bottom:1px solid var(--line);
  padding-block:clamp(var(--sp-7),5vw,var(--sp-9))}
.page-head h1{margin-bottom:var(--sp-5);max-width:20ch}
.article h2{
  font-size:clamp(1.35rem,1.15rem + .8vw,1.75rem);
  margin-top:var(--sp-8);margin-bottom:var(--sp-4);
}
.article h2:first-child{margin-top:0}
.article p{color:var(--ink-2);margin-bottom:var(--sp-4);max-width:72ch}
.article ul{list-style:none;display:grid;gap:var(--sp-3);margin:var(--sp-4) 0 var(--sp-5)}
.article li{display:flex;gap:var(--sp-3);color:var(--ink-2);max-width:72ch}
.article li::before{
  content:"";flex:none;width:7px;height:7px;border-radius:2px;
  background:var(--steel);margin-top:12px;
}
.dtable{
  width:100%;border-collapse:collapse;margin-top:var(--sp-5);
  border:1px solid var(--line);border-radius:var(--r-2);overflow:hidden;
}
.dtable th{
  background:var(--navy-900);color:#fff;text-align:left;
  font-size:.76rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  padding:var(--sp-4) var(--sp-5);
}
.dtable td{
  padding:var(--sp-4) var(--sp-5);border-top:1px solid var(--line);
  color:var(--ink-2);font-size:.93rem;vertical-align:baseline;
}
.dtable td:first-child{color:var(--ink);font-weight:600;width:190px}
.dtable tr:nth-child(even) td{background:var(--mist)}

/* ---------- catalogue ---------- */
.cat{display:grid;grid-template-columns:1fr;gap:var(--sp-5)}
@media (min-width:640px){.cat{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1000px){.cat{grid-template-columns:repeat(3,1fr)}}
.card{
  display:flex;flex-direction:column;background:var(--paper);
  border:1px solid var(--line);border-radius:var(--r-3);overflow:hidden;
  transition:box-shadow var(--dur-base) var(--ease-out),
             transform var(--dur-base) var(--ease-out);
}
@media (hover:hover){.card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px)}}
.card-art{
  background:linear-gradient(165deg,var(--navy-800),var(--navy-900));
  padding:var(--sp-6);display:flex;align-items:center;justify-content:center;
}
.card-art svg{width:74px;height:auto}
.card-body{padding:var(--sp-6);display:flex;flex-direction:column;flex:1}
.card-body h3{margin-bottom:var(--sp-2)}
.card-sub{color:var(--ink-3);font-size:.88rem;margin-bottom:var(--sp-5)}
.card dl{display:grid;grid-template-columns:auto 1fr;margin-bottom:var(--sp-5)}
.card dt,.card dd{font-size:.89rem;padding:9px 0;border-bottom:1px solid var(--line)}
.card dt{color:var(--ink-3)}
.card dd{color:var(--ink);text-align:right;font-weight:500;font-variant-numeric:tabular-nums}
.card dl>:nth-last-child(-n+2){border-bottom:0}
.card-foot{margin-top:auto;display:flex;align-items:center;gap:var(--sp-4)}
.card-price{font-weight:700;color:var(--navy-800);margin-right:auto;font-variant-numeric:tabular-nums}
.card-note{
  padding:var(--sp-3) var(--sp-6);background:var(--mist);border-top:1px solid var(--line);
}
.empty{
  border:1px dashed var(--line-2);border-radius:var(--r-3);background:var(--mist);
  padding:var(--sp-9) var(--sp-5);text-align:center;
}
.empty h3{margin-bottom:var(--sp-3)}
.empty p{max-width:46ch;margin:0 auto var(--sp-5);color:var(--ink-2)}

/* ---------- footer ---------- */
.foot{background:var(--navy-900);color:#A6C2BC;padding-block:var(--sp-9) var(--sp-6);font-size:.93rem}
.foot-grid{display:grid;grid-template-columns:1fr;gap:var(--sp-7)}
@media (min-width:860px){.foot-grid{grid-template-columns:minmax(0,1.3fr) repeat(2,minmax(0,1fr))}}
.foot .brand-t b{color:#fff}
.foot .brand-t .lb{color:var(--steel-300)}
.foot .brand-t > span{color:var(--steel-300)}
.foot h4{color:#fff;margin-bottom:var(--sp-5);font-size:1.05rem;font-weight:700}
.foot ul{list-style:none;display:grid;gap:var(--sp-3)}
@media (hover:hover){.foot a:hover{color:#fff}}
.foot-contact{display:grid;gap:var(--sp-4)}
.foot-contact li{display:flex;gap:var(--sp-3)}
.foot-contact svg{width:18px;height:18px;flex:none;margin-top:4px;color:var(--steel-300)}
.foot-advisory{
  margin-top:var(--sp-8);padding-top:var(--sp-6);border-top:1px solid rgba(143,192,186,.2);
  font-size:.86rem;line-height:1.7;color:#93B4AF;text-align:center;max-width:96ch;
  margin-inline:auto;
}
.foot-bar{
  margin-top:var(--sp-6);padding-top:var(--sp-5);border-top:1px solid rgba(143,192,186,.2);
  display:flex;flex-wrap:wrap;gap:var(--sp-4);justify-content:space-between;
  font-size:.85rem;color:#8AACA7;
}

/* ---------- motion ---------- */
.rise{opacity:0;transform:translateY(14px)}
.ready .rise{
  opacity:1;transform:none;
  transition:opacity 440ms var(--ease-out),transform 440ms var(--ease-out);
  transition-delay:calc(var(--i,0) * 70ms);
}
.reveal{opacity:0;transform:translateY(18px)}
.reveal.in{opacity:1;transform:none;
  transition:opacity 480ms var(--ease-out),transform 480ms var(--ease-out)}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  .rise,.reveal{opacity:1;transform:none}
}

/* ---------- small screens ---------- */
.btn-short{display:none}
@media (max-width:900px){
  .nav-links{display:none}
  .nav-in{height:68px}
}
@media (max-width:460px){
  .nav .btn-long{display:none}
  .nav .btn-short{display:inline}
  .nav .btn-sm{padding:0 var(--sp-4)}
  .brand svg{width:30px}
  .brand-t b{font-size:1rem}
  .brand-t span{font-size:.48rem;letter-spacing:.14em}
  .shell{padding-inline:var(--sp-4)}
  .panel{padding:var(--sp-5)}
  .hero-cta .btn{flex:1 1 100%}
  .faq-list{padding:var(--sp-4)}
  .faq-list summary{padding:var(--sp-4)}
  .faq-body{padding:0 var(--sp-4) var(--sp-4)}
  .dtable th,.dtable td{padding:var(--sp-3) var(--sp-4)}
  .dtable td:first-child{width:auto}
}