/* ==========================================================================
   CD Biolab — PRIME design system
   Lifted from the Prime Bio Group vial: amber glass, forest-green cap,
   white pharmacy label, soft seamless studio ground.
   ========================================================================== */
:root{
  /* ground + ink */
  --paper:#F7F7F4; --card:#FFFFFF; --sand:#EFF0EA; --mist:#E9EEEA;
  --ink:#141C18; --ink-2:#4C5A52; --ink-3:#7E8C83;
  --line:#E1E5DC; --line-2:#CBD3C8;
  /* prime greens */
  --pine:#123A31; --green:#1E5245; --green-2:#2C7561; --green-3:#5FA68E;
  --green-wash:#E7EFEA;
  /* vial amber (accent, used sparingly) */
  --amber:#96622A; --amber-2:#C08A47; --amber-wash:#F5EDE1;
  --white:#fff;
  --shadow-sm:0 1px 2px rgba(18,58,49,.05), 0 6px 18px -12px rgba(18,58,49,.22);
  --shadow:0 2px 4px rgba(18,58,49,.05), 0 24px 56px -28px rgba(18,58,49,.34);
  --radius:16px; --radius-lg:24px; --maxw:1200px;
  --display:"Playfair Display",Georgia,"Times New Roman",serif;
  --sans:"Archivo",system-ui,-apple-system,"Helvetica Neue",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--sans);color:var(--ink);background:var(--paper);
  line-height:1.62;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--display);font-weight:600;line-height:1.08;
  letter-spacing:-.015em;text-wrap:balance}
:focus-visible{outline:2.5px solid var(--green-2);outline-offset:3px;border-radius:4px}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 26px}
.wrap-n{max-width:900px;margin:0 auto;padding:0 26px}
.block{padding:5.2rem 0}
.block.tight{padding:3.2rem 0}

/* ---------- label type (the pharmacy-label voice) ---------- */
.label{font-family:var(--sans);font-weight:700;font-size:.7rem;letter-spacing:.2em;
  text-transform:uppercase;color:var(--green-2)}
.label.on-dark{color:var(--amber-2)}
.ruo{font-family:var(--sans);font-weight:600;font-size:.66rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-3)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  font-family:var(--sans);font-weight:600;font-size:.95rem;padding:.92rem 1.6rem;
  border-radius:100px;border:none;cursor:pointer;transition:.24s cubic-bezier(.2,.7,.3,1);
  white-space:nowrap}
.btn-primary{background:var(--green);color:#fff;box-shadow:0 10px 26px -12px rgba(18,58,49,.7)}
.btn-primary:hover{background:var(--pine);transform:translateY(-2px);
  box-shadow:0 16px 34px -14px rgba(18,58,49,.8)}
.btn-amber{background:linear-gradient(120deg,var(--amber-2),var(--amber));color:#fff;
  box-shadow:0 10px 26px -12px rgba(150,98,42,.6)}
.btn-amber:hover{transform:translateY(-2px)}
.btn-ghost{background:var(--card);color:var(--ink);border:1.5px solid var(--line-2)}
.btn-ghost:hover{border-color:var(--green-2);color:var(--green);transform:translateY(-2px)}
.btn-ghost.on-dark{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.34);color:#fff}
.btn-ghost.on-dark:hover{background:rgba(255,255,255,.2);color:#fff}
.btn-sm{padding:.6rem 1.15rem;font-size:.86rem}
.btn-lg{padding:1.06rem 2rem;font-size:1.02rem}

/* ---------- nav ---------- */
header.nav{position:sticky;top:0;z-index:60;background:rgba(247,247,244,.9);
  backdrop-filter:saturate(170%) blur(14px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:1.4rem;
  max-width:var(--maxw);margin:0 auto;padding:15px 26px}
.brand{display:flex;align-items:center;gap:.6rem;font-family:var(--display);font-weight:700;
  font-size:1.28rem;letter-spacing:-.02em;color:var(--ink)}
.brand .mark{width:26px;height:26px;border-radius:7px;background:var(--green);color:#fff;
  font-family:var(--display);font-size:.95rem;font-weight:700;display:grid;place-items:center;line-height:1}
.nav-links{display:flex;align-items:center;gap:1.7rem;font-size:.92rem;font-weight:500;color:var(--ink-2)}
.nav-links a{position:relative;padding:.2rem 0}
.nav-links a:hover{color:var(--green)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;
  background:var(--green-2);transition:.26s}
.nav-links a:hover::after{width:100%}
.nav-links a.is-active{color:var(--green);font-weight:600}
.menu-btn{display:none;background:none;border:none;font-size:1.5rem;color:var(--ink);cursor:pointer;line-height:1}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(122deg,#0C2C25 0%,#123A31 38%,#1E5245 72%,#2C7561 100%)}
.hero::after{content:"";position:absolute;right:-160px;top:-180px;width:600px;height:600px;
  border-radius:50%;background:radial-gradient(circle,rgba(192,138,71,.22),transparent 66%);
  pointer-events:none}
.hero .wrap{position:relative;z-index:2;padding-top:5rem;padding-bottom:4.6rem}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:3rem;align-items:center}
.hero h1{font-size:clamp(2.6rem,5.6vw,4.3rem);color:#fff;margin:.85rem 0 .8rem}
.hero h1 em{font-style:italic;color:var(--amber-2)}
.hero .lede{font-size:1.1rem;color:rgba(255,255,255,.88);max-width:56ch;margin-bottom:1.7rem}
.hero-cta{display:flex;flex-wrap:wrap;gap:.7rem;margin-bottom:1.5rem}
.hero-vial{position:relative}
.hero-vial img{border-radius:var(--radius-lg);box-shadow:0 40px 90px -40px rgba(0,0,0,.6)}

/* ---------- trust strip ---------- */
.trust{background:var(--card);border-bottom:1px solid var(--line)}
.trust .wrap{display:flex;flex-wrap:wrap;gap:0}
.trust .t{flex:1 1 220px;padding:1.4rem 1.5rem;border-right:1px solid var(--line);
  font-size:.9rem;color:var(--ink-2)}
.trust .t:last-child{border-right:0}
.trust .t b{display:block;font-family:var(--display);font-size:1.08rem;color:var(--ink);
  font-weight:600;margin-bottom:.15rem}

/* ---------- section heads ---------- */
.shead{margin-bottom:2.4rem;max-width:64ch}
.shead.center{margin-left:auto;margin-right:auto;text-align:center}
.shead h2{font-size:clamp(1.9rem,3.6vw,2.8rem);margin:.6rem 0 .6rem}
.shead p{color:var(--ink-2);font-size:1.02rem}

/* ---------- product cards ---------- */
.pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(258px,1fr));gap:1.35rem}
.pcard{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;transition:.28s cubic-bezier(.2,.7,.3,1)}
.pcard:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--card)}
.pcard.hide{display:none}
.pimg{position:relative;aspect-ratio:1/1;background:linear-gradient(168deg,#fff,#EDF1EE);overflow:hidden}
.pimg img{width:100%;height:100%;object-fit:cover;transition:.5s cubic-bezier(.2,.7,.3,1)}
.pcard:hover .pimg img{transform:scale(1.05)}
.pflag{position:absolute;top:.65rem;left:.65rem;z-index:2;background:rgba(20,28,24,.82);color:#fff;
  font-size:.62rem;font-weight:700;letter-spacing:.11em;text-transform:uppercase;
  padding:.28rem .6rem;border-radius:100px}
.pbody{padding:1.1rem 1.2rem 1.2rem;display:flex;flex-direction:column;flex:1}
.pchips{display:flex;flex-wrap:wrap;gap:.28rem;margin-bottom:.5rem}
.chipt{font-size:.6rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--green);background:var(--green-wash);border-radius:100px;padding:.24rem .58rem}
.pcard h3{font-size:1.15rem;margin-bottom:.35rem;line-height:1.2}
.pcard h3 a:hover{color:var(--green)}
.pdesc{font-size:.855rem;color:var(--ink-2);line-height:1.5;margin-bottom:.8rem;flex:1}
.pvars{display:flex;flex-wrap:wrap;gap:.3rem;margin-bottom:.9rem}
.pv{font-size:.72rem;color:var(--ink-2);background:var(--paper);border:1px solid var(--line);
  border-radius:7px;padding:.26rem .48rem;display:inline-flex;gap:.32rem;align-items:baseline}
.pv b{color:var(--ink);font-weight:700}
.pv.oos{opacity:.42;text-decoration:line-through}
.pfoot{display:flex;align-items:center;justify-content:space-between;gap:.55rem;
  border-top:1px solid var(--line);padding-top:.8rem;margin-top:auto}
.pprice{font-family:var(--display);font-weight:700;font-size:1.18rem;
  font-variant-numeric:tabular-nums}
.pprice .to{color:var(--ink-3);font-weight:400}

/* ---------- filter bar ---------- */
.filterbar{position:sticky;top:57px;z-index:40;background:rgba(247,247,244,.94);
  backdrop-filter:saturate(170%) blur(14px);border-bottom:1px solid var(--line);padding:.85rem 0}
.fb{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center}
.fsearch{flex:1 1 240px;min-width:190px;position:relative}
.fsearch input{width:100%;border:1.5px solid var(--line-2);background:var(--card);border-radius:100px;
  padding:.66rem 1.1rem .66rem 2.45rem;font-family:var(--sans);font-size:.93rem;color:var(--ink);outline:none}
.fsearch input:focus{border-color:var(--green-2);box-shadow:0 0 0 4px rgba(44,117,97,.15)}
.fsearch svg{position:absolute;left:.88rem;top:50%;transform:translateY(-50%);opacity:.42}
.chiprow{display:flex;flex-wrap:wrap;gap:.36rem}
.chip{font-family:var(--sans);font-size:.81rem;font-weight:600;color:var(--ink-2);background:var(--card);
  border:1.5px solid var(--line);border-radius:100px;padding:.46rem .9rem;cursor:pointer;transition:.2s;
  display:inline-flex;align-items:center;gap:.36rem}
.chip:hover{border-color:var(--green-2);color:var(--green)}
.chip.on{background:var(--green);border-color:var(--green);color:#fff}
.chip i{font-style:normal;opacity:.55;font-size:.73rem}
.fcount{font-size:.83rem;color:var(--ink-2);margin-left:auto;white-space:nowrap}
.fcount b{color:var(--ink)}
.empty{display:none;text-align:center;padding:4rem 0;color:var(--ink-2)}
.empty.on{display:block}

/* ---------- panels / feature rows ---------- */
.panels{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.panels > div{background:var(--card);padding:1.7rem 1.8rem}
.panels h3{font-size:1.14rem;margin-bottom:.45rem}
.panels p{font-size:.93rem;color:var(--ink-2)}
.panels .k{font-family:var(--display);font-size:2.1rem;font-weight:700;color:var(--green);
  line-height:1;display:block;margin-bottom:.5rem}

.dark-band{background:linear-gradient(120deg,#0C2C25,#123A31 55%,#1E5245);color:#fff}
.dark-band h2{color:#fff}
.dark-band p{color:rgba(255,255,255,.85)}

/* ---------- prose (articles / legal) ---------- */
.prose{max-width:70ch}
.prose h2{font-size:1.75rem;margin:2.3rem 0 .8rem}
.prose h3{font-size:1.25rem;margin:1.7rem 0 .55rem}
.prose p{margin-bottom:1.05rem;color:var(--ink-2)}
.prose ul,.prose ol{margin:0 0 1.15rem 1.3rem;color:var(--ink-2)}
.prose li{margin-bottom:.45rem}
.prose a{color:var(--green);text-decoration:underline;text-underline-offset:3px}
.prose strong{color:var(--ink)}
.note{background:var(--green-wash);border-left:3px solid var(--green-2);padding:1.1rem 1.3rem;
  border-radius:0 10px 10px 0;margin:1.5rem 0;font-size:.94rem;color:var(--ink-2)}
.note.amber{background:var(--amber-wash);border-left-color:var(--amber-2)}

/* ---------- product detail ---------- */
.pdp{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:start}
.pdp-gallery{position:sticky;top:80px}
.pdp-main{background:linear-gradient(168deg,#fff,#EDF1EE);border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:1/1}
.pdp-main img{width:100%;height:100%;object-fit:contain;padding:4%}
.pdp-thumbs button img{width:100%;height:100%;object-fit:contain;padding:6%}
.pdp-thumbs{display:flex;gap:.5rem;margin-top:.6rem;flex-wrap:wrap}
.pdp-thumbs button{width:70px;height:70px;border-radius:10px;overflow:hidden;border:2px solid var(--line);
  background:#fff;cursor:pointer;padding:0;transition:.2s}
.pdp-thumbs button.on,.pdp-thumbs button:hover{border-color:var(--green-2)}
.pdp h1{font-size:clamp(2rem,4vw,2.9rem);margin:.5rem 0 .7rem}
.varlist{display:flex;flex-direction:column;gap:.5rem;margin:1.4rem 0}
.varrow{display:flex;align-items:center;justify-content:space-between;gap:1rem;background:var(--card);
  border:1px solid var(--line);border-radius:12px;padding:.85rem 1.05rem;transition:.2s}
.varrow:hover{border-color:var(--green-2);box-shadow:var(--shadow-sm)}
.varrow .vn{font-weight:600;font-size:.94rem}
.varrow .vp{font-family:var(--display);font-weight:700;font-size:1.2rem;
  font-variant-numeric:tabular-nums;margin-left:auto}
.varrow.oos{opacity:.5}

/* ---------- breadcrumbs ---------- */
.crumbs{font-size:.8rem;color:var(--ink-3);padding:1.1rem 0 0}
.crumbs a:hover{color:var(--green)}
.crumbs span{margin:0 .4rem;opacity:.5}

/* ---------- footer ---------- */
footer.site{background:var(--pine);color:rgba(255,255,255,.72);margin-top:4rem;
  padding:3.6rem 0 2rem;font-size:.9rem}
footer.site .fgrid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:2.2rem;margin-bottom:2.4rem}
footer.site h4{font-family:var(--sans);font-size:.7rem;font-weight:700;letter-spacing:.18em;
  text-transform:uppercase;color:var(--amber-2);margin-bottom:.9rem}
footer.site ul{list-style:none}
footer.site li{margin-bottom:.5rem}
footer.site a:hover{color:#fff}
footer.site .fbrand{display:flex;align-items:center;gap:.6rem;font-family:var(--display);
  font-weight:700;font-size:1.2rem;color:#fff;margin-bottom:.7rem}
footer.site .fbrand .mark{width:26px;height:26px;border-radius:7px;background:var(--green-2);
  display:grid;place-items:center;font-size:.95rem}
.legal{border-top:1px solid rgba(255,255,255,.13);padding-top:1.5rem;font-size:.78rem;
  color:rgba(255,255,255,.5);line-height:1.7}
.legal b{color:rgba(255,255,255,.8)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:.85s cubic-bezier(.16,.8,.3,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.07s}.reveal.d2{transition-delay:.14s}.reveal.d3{transition-delay:.21s}

@media(max-width:940px){
  .hero-grid{grid-template-columns:1fr}
  .hero-vial{display:none}
  .pdp{grid-template-columns:1fr;gap:2rem}
  .pdp-gallery{position:static}
  footer.site .fgrid{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:var(--card);
    flex-direction:column;align-items:flex-start;gap:0;padding:.6rem 26px 1rem;
    border-bottom:1px solid var(--line);box-shadow:var(--shadow-sm)}
  .nav-links.open{display:flex}
  .nav-links a{width:100%;padding:.7rem 0;border-bottom:1px solid var(--line)}
  .menu-btn{display:block}
  .block{padding:3.4rem 0}
  .hero .wrap{padding-top:3rem;padding-bottom:3rem}
  .pgrid{grid-template-columns:repeat(auto-fill,minmax(152px,1fr));gap:.8rem}
  .pbody{padding:.8rem .85rem 1rem}
  .pcard h3{font-size:1rem}
  .pdesc{display:none}
  .pfoot{flex-direction:column;align-items:stretch;gap:.5rem}
  .trust .t{flex-basis:50%;border-bottom:1px solid var(--line)}
  .fcount{margin-left:0;width:100%}
  footer.site .fgrid{grid-template-columns:1fr}
}