/* LTS Help — labtestingsolutions.help. Tinted neutrals, OKLCH tokens, Fraunces + Figtree. */
:root{
  --paper: oklch(98.2% 0.022 85);      /* warm cream */
  --paper-2: oklch(95.6% 0.03 120);    /* sage wash */
  --card: oklch(99.2% 0.012 85);
  --ink: oklch(32% 0.05 170);          /* deep green */
  --ink-soft: oklch(46% 0.04 165);
  --line: oklch(90% 0.025 130);
  --clay: oklch(52% 0.14 38);          /* coral accent */
  --clay-wash: oklch(89% 0.06 50);
  --sage-wash: oklch(93% 0.045 125);
  --plum-wash: oklch(91.5% 0.03 310);
  --sky-wash: oklch(92.5% 0.03 225);
  --on-clay: oklch(34% 0.09 38);
  --on-plum: oklch(36% 0.07 310);
  --on-sky: oklch(36% 0.06 225);
  --on-sage: oklch(36% 0.07 135);
  --on-ink: oklch(97% 0.02 85);
  --on-ink-soft: oklch(87% 0.03 150);
  --radius: 24px;
  --display: "Fraunces", Georgia, serif;
  --body: "Figtree", sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:400 17px/1.55 var(--body)}
a{color:var(--ink)}a:hover{color:var(--clay)}
img,svg{display:block}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:focus-visible{outline:3px solid var(--clay);outline-offset:3px;border-radius:8px}
h1,h2{font-family:var(--display);font-weight:400;letter-spacing:-.01em;line-height:1.08;margin:0}
h2{font-size:clamp(28px,3.4vw,36px);margin-bottom:22px}

/* header */
.top{border-bottom:1px solid var(--line);background:var(--paper)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:12px;padding-bottom:12px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink)}
.mark{width:44px;height:44px;border-radius:50%;background:var(--ink);color:var(--on-ink);display:grid;place-items:center;font:400 26px/1 var(--display)}
.brand b{display:block;font-size:16px}.brand small{font-size:12px;color:var(--ink-soft)}
.nav{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.pill{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 16px;border-radius:999px;text-decoration:none;font-weight:600;font-size:15px;color:var(--ink);border:0;background:none;cursor:pointer;font-family:var(--body)}
.pill:hover{background:var(--paper-2);color:var(--ink)}
.pill.solid{background:var(--ink);color:var(--on-ink);padding:0 20px}
.pill.solid:hover{background:oklch(40% 0.06 170);color:var(--on-ink)}

/* hero */
.hero{background:var(--ink);color:var(--on-ink)}
.hero .wrap{display:flex;flex-direction:column;align-items:center;text-align:center;gap:22px;padding-top:68px;padding-bottom:60px}
.hero h1{font-size:clamp(40px,6vw,60px)}
.ask{width:100%;max-width:640px;display:flex;gap:6px;background:var(--paper);border-radius:999px;padding:6px}
.ask input{flex:1;min-width:0;border:0;background:transparent;padding:0 18px;font:400 17px var(--body);color:var(--ink);min-height:52px;outline:none}
.ask button{border:0;border-radius:999px;background:var(--clay);color:var(--on-ink);font:700 16px var(--body);padding:0 26px;min-height:52px;cursor:pointer}
.ask button:hover{background:oklch(46% 0.13 38)}
.chips{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}
.chip{display:inline-flex;align-items:center;min-height:44px;padding:0 16px;border:1px solid oklch(62% 0.05 160);border-radius:999px;color:var(--on-ink);text-decoration:none;font-size:15px;background:none;font-family:var(--body);cursor:pointer}
.chip:hover{background:oklch(38% 0.05 170);color:var(--on-ink)}

section.block{padding:56px 0 8px}

/* steps */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.steps li{border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;gap:10px}
.steps .top-row{display:flex;justify-content:space-between;align-items:center}
.steps .n{font:400 32px/1 var(--display);color:var(--clay)}
.steps strong{font-size:19px}
.steps span.d{font-size:15px}
.s1{background:var(--sage-wash)}.s1 .d{color:var(--on-sage)}
.s2{background:var(--clay-wash)}.s2 .d{color:var(--on-clay)}
.s3{background:var(--plum-wash)}.s3 .d{color:var(--on-plum)}
.s4{background:var(--sky-wash)}.s4 .d{color:var(--on-sky)}

/* who */
.who{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.who a{text-decoration:none;color:var(--ink);border:2px solid var(--ink);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;gap:8px;min-height:150px;transition:transform .15s ease,background .15s ease}
.who a:hover{background:var(--card);transform:translateY(-2px);color:var(--ink)}
.who strong{font-size:20px}.who span{font-size:15px;color:var(--ink-soft)}

/* tiles */
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px}
.tiles a,.tiles button{text-decoration:none;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:20px;padding:20px;display:flex;flex-direction:column;gap:10px;min-height:112px;text-align:left;font:600 16px var(--body);cursor:pointer;transition:border-color .15s ease,transform .15s ease}
.tiles a:hover,.tiles button:hover{border-color:var(--clay);transform:translateY(-2px);color:var(--ink)}

/* banners */
.warn{background:var(--clay-wash);border-radius:28px;padding:28px 32px;display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.warn .t{flex:1;min-width:240px;display:flex;flex-direction:column;gap:4px}
.warn strong{font-size:22px}.warn span{color:var(--on-clay)}
.btn{display:inline-flex;align-items:center;gap:10px;min-height:52px;padding:0 26px;border-radius:999px;border:0;font:700 16px var(--body);text-decoration:none;cursor:pointer}
.btn.clay{background:var(--clay);color:var(--on-ink)}.btn.clay:hover{background:oklch(46% 0.13 38);color:var(--on-ink)}
.btn.light{background:var(--paper);color:var(--ink)}.btn.light:hover{background:var(--card);color:var(--ink)}
.btn.line{border:1px solid oklch(62% 0.05 160);color:var(--on-ink);background:none}.btn.line:hover{color:var(--on-ink);background:oklch(38% 0.05 170)}
.stuck{background:var(--ink);color:var(--on-ink);border-radius:28px;padding:40px 32px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;margin:40px 0 64px}
.stuck p{margin:6px 0 0;color:var(--on-ink-soft);max-width:560px}
.stuck .acts{display:flex;gap:10px;flex-wrap:wrap}

/* topic page */
.crumbs{padding:36px 0 0}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--clay)}
.topic h1{font-size:clamp(36px,5vw,52px);margin:10px 0 12px}
.lede{font-size:19px;color:var(--ink-soft);max-width:620px;margin:0}
.compare{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px;padding:28px 0}
.lab{border-radius:28px;padding:30px;display:flex;flex-direction:column;gap:16px}
.lab.q{background:var(--sage-wash)}.lab.l{background:var(--sky-wash)}
.tag{align-self:flex-start;background:var(--ink);color:var(--on-ink);border-radius:999px;padding:6px 14px;font-size:13px;font-weight:700}
.code{background:var(--card);border-radius:16px;padding:18px;display:flex;flex-direction:column;gap:10px}
.code .num{font:600 24px var(--body);font-variant-numeric:tabular-nums;letter-spacing:.12em}
.code .num b{color:var(--clay)}
.lab strong.big{font-size:22px}
.checks{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.checks li{display:flex;gap:10px;align-items:center}
.bring{display:flex;gap:14px;flex-wrap:wrap}
.bring div{flex:1 1 200px;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:20px;display:flex;align-items:center;gap:14px;font-weight:700}
.bring div.no{background:var(--clay-wash);border-color:transparent}

/* footer */
.foot{border-top:1px solid var(--line);background:var(--paper-2)}
.foot .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;padding-top:28px;padding-bottom:28px;font-size:15px;color:var(--ink-soft)}
.foot nav{display:flex;gap:18px;flex-wrap:wrap}
.foot h3{font-size:13px;letter-spacing:.12em;text-transform:uppercase;margin:0 0 8px;color:var(--ink)}
.foot ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}

@media (max-width:640px){
  .hero .wrap{padding-top:48px;padding-bottom:44px}
  section.block{padding-top:40px}
  .stuck,.warn{padding:26px 22px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}