:root{
  --bg:#05070d;
  --bg-alt:#080b14;
  --surface:#0e1220;
  --surface-2:#131829;
  --border:#232a3d;
  --text:#e8ebf3;
  --text-dim:#9aa3ba;
  --text-faint:#5f6880;
  --cyan:#22d3ee;
  --violet:#a855f7;
  --grad: linear-gradient(120deg,var(--cyan),var(--violet));
  --radius:18px;
  --shadow-glow: 0 0 60px -15px rgba(34,211,238,.35);
  --ff: "Manrope", "Inter", system-ui, -apple-system, sans-serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--ff);
  background:var(--bg);
  color:var(--text);
  line-height:1.5;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
input,select,textarea,button{font-family:inherit;font-size:1rem;color:inherit}

.muted{color:var(--text-dim);font-weight:400}
.grad-text{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* background canvas */
.bg-canvas-wrap{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.55}
#net{width:100%;height:100%}

/* aurora background blobs */
.aurora{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.aurora-blob{
  position:absolute;border-radius:50%;filter:blur(70px);opacity:.28;
  mix-blend-mode:screen;
}
.aurora-blob.a1{width:520px;height:520px;top:-180px;left:-120px;background:radial-gradient(circle,#22d3ee,transparent 70%);animation:auroraDrift1 32s ease-in-out infinite}
.aurora-blob.a2{width:600px;height:600px;top:20%;right:-220px;background:radial-gradient(circle,#a855f7,transparent 70%);animation:auroraDrift2 38s ease-in-out infinite}
.aurora-blob.a3{width:420px;height:420px;bottom:-160px;left:30%;background:radial-gradient(circle,#22d3ee,transparent 70%);animation:auroraDrift3 26s ease-in-out infinite}
@keyframes auroraDrift1{0%,100%{transform:translate(0,0)}50%{transform:translate(60px,80px)}}
@keyframes auroraDrift2{0%,100%{transform:translate(0,0)}50%{transform:translate(-70px,60px)}}
@keyframes auroraDrift3{0%,100%{transform:translate(0,0)}50%{transform:translate(40px,-50px)}}

/* film-grain texture overlay, keeps flat gradients from looking too clean/synthetic */
body::after{
  content:"";
  position:fixed;inset:0;z-index:250;pointer-events:none;
  opacity:.045;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* AGE GATE */
.age-gate{
  position:fixed;inset:0;z-index:1000;
  display:flex;align-items:center;justify-content:center;padding:24px;
  background:rgba(5,7,13,.88);backdrop-filter:blur(16px);
  opacity:1;transition:opacity .4s ease, visibility .4s ease;
}
.age-gate.hidden{opacity:0;visibility:hidden;pointer-events:none}
body.gate-active{overflow:hidden}
.age-gate-card{
  max-width:440px;width:100%;text-align:center;
  background:var(--surface);border:1px solid var(--border);border-radius:24px;
  padding:44px 36px;box-shadow:var(--shadow-glow);
}
.age-gate-mark{display:inline-flex;margin-bottom:18px}
.age-gate-mark svg{width:44px;height:44px}
.age-gate-card h2{font-size:1.3rem;margin-bottom:14px;letter-spacing:-.01em}
.age-gate-card p{color:var(--text-dim);font-size:.9rem;line-height:1.65;margin-bottom:26px}
.age-gate-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* NAV */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(5,7,13,.55);
  backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s ease, background .3s ease;
}
.nav.scrolled{border-bottom-color:var(--border);background:rgba(5,7,13,.85)}
.ruo-strip{
  background:linear-gradient(90deg, rgba(34,211,238,.1), rgba(168,85,247,.1));
  border-bottom:1px solid var(--border);
  color:var(--text-dim);font-size:.72rem;text-align:center;
  padding:7px 16px;
}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:16px 28px;
  display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.15rem;letter-spacing:-.02em}
.brand-mark svg{width:26px;height:26px}
.nav-links{display:flex;gap:26px;margin-left:auto;font-size:.92rem;color:var(--text-dim)}
.nav-links a{transition:color .2s}
.nav-links a:hover{color:var(--text)}
.nav-cta{margin-left:8px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.nav-toggle span{width:22px;height:2px;background:var(--text);border-radius:2px}

/* BUTTONS */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;font-weight:600;font-size:.94rem;
  border:1px solid transparent;cursor:pointer;transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#05070d}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 30px -8px rgba(168,85,247,.55)}
.btn-outline{border-color:var(--border);color:var(--text)}
.btn-outline:hover{border-color:var(--cyan);color:var(--cyan)}
.btn-ghost{border-color:var(--border);color:var(--text-dim);padding:10px 20px;font-size:.88rem}
.btn-ghost:hover{border-color:var(--cyan);color:var(--text)}
.btn-wide{width:100%;padding:15px}

main{position:relative;z-index:1}

/* HERO */
.hero{
  min-height:100vh;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  max-width:1200px;margin:0 auto;padding:182px 28px 80px;
  flex-wrap:wrap;
}
.hero-inner{flex:1 1 480px;max-width:620px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.82rem;color:var(--text-dim);
  border:1px solid var(--border);padding:7px 14px;border-radius:999px;
  margin-bottom:22px;
}
.dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
h1{font-size:clamp(2.3rem,5vw,3.6rem);line-height:1.08;letter-spacing:-.03em;font-weight:700;margin-bottom:22px}
.hero-sub{color:var(--text-dim);font-size:1.05rem;max-width:560px;margin-bottom:34px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:48px}
.hero-badges{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;max-width:520px}
.hbadge{
  background:rgba(255,255,255,.02);
  border:1px solid var(--border);border-radius:14px;
  padding:14px 10px;text-align:center;
}
.hbadge strong{display:block;font-size:1rem;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hbadge span{display:block;font-size:.72rem;color:var(--text-faint);margin-top:3px}

.hero-visual{flex:1 1 300px;display:flex;justify-content:center;align-items:center;position:relative;min-height:420px;perspective:800px}
.vial{width:220px;height:auto;filter:drop-shadow(0 20px 40px rgba(0,0,0,.5));animation:float 5s ease-in-out infinite;transition:transform .2s ease-out;transform-style:preserve-3d}
.vial-glow{
  position:absolute;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.35),rgba(168,85,247,.15) 60%,transparent 70%);
  filter:blur(10px);animation:pulse 3.5s infinite;
}
.vial-glow.small{width:220px;height:220px}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}

/* reveal-on-scroll */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease, transform .7s ease}
.reveal.in{opacity:1;transform:translateY(0)}

/* TRUST STRIP */
.trust-strip{
  max-width:1200px;margin:0 auto;padding:20px 28px 60px;
  display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;
  border-top:1px solid var(--border);border-bottom:1px solid var(--border);
}
.trust-item{display:flex;align-items:center;gap:10px;color:var(--text-dim);font-size:.88rem;flex:1 1 200px}
.trust-item svg{width:22px;height:22px;flex-shrink:0;stroke:var(--cyan);fill:none;stroke-width:1.6}

/* SECTION HEAD */
.section-head{max-width:640px;margin:0 auto 44px;text-align:center}
.kicker{color:var(--cyan);font-size:.8rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;margin-bottom:10px}
.section-head h2{font-size:clamp(1.7rem,3.2vw,2.4rem);letter-spacing:-.02em;margin-bottom:14px}
.section-sub{color:var(--text-dim);font-size:1rem}

section.product,section.calculator,section.quality,section.faq,section.contact{
  max-width:1200px;margin:0 auto;padding:100px 28px;
}

/* PRODUCT */
.product-grid{display:flex;flex-direction:column;gap:28px}
.product-card{
  display:flex;gap:48px;align-items:center;flex-wrap:wrap;
  background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,0));
  border:1px solid var(--border);border-radius:24px;padding:48px;
  box-shadow:var(--shadow-glow);
}
.product-card--compact{padding:34px;box-shadow:none}
.product-card--compact .product-media{min-height:220px}
.product-card--compact .product-media img{width:120px}
.product-card--compact .vial-glow.small{width:150px;height:150px}
.product-card--compact .product-info h3{font-size:1.35rem}
.product-media{flex:1 1 260px;position:relative;display:flex;justify-content:center;align-items:center;min-height:340px}
.vial-frame{position:relative;z-index:1;display:inline-flex}
.product-media img{width:190px;height:auto;filter:drop-shadow(0 16px 30px rgba(0,0,0,.5))}
.stock-pill{
  position:absolute;top:-10px;right:-14px;
  background:rgba(34,211,238,.12);color:var(--cyan);
  font-size:.72rem;font-weight:600;padding:5px 12px;border-radius:999px;border:1px solid rgba(34,211,238,.3);
  backdrop-filter:blur(6px);
}
.product-info{flex:1 1 420px}
.product-info h3{font-size:1.7rem;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.mg-tag{font-size:.8rem;background:var(--surface-2);border:1px solid var(--border);padding:4px 10px;border-radius:999px;color:var(--text-dim);font-weight:500}
.product-desc{color:var(--text-dim);margin-bottom:26px}
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px 24px;margin-bottom:30px}
.spec{display:flex;flex-direction:column;gap:3px;border-bottom:1px solid var(--border);padding-bottom:10px}
.spec-label{font-size:.72rem;color:var(--text-faint);text-transform:uppercase;letter-spacing:.06em}
.spec-val{font-size:.95rem;font-weight:600}
.price-row{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:18px}
.price{font-size:1.9rem;font-weight:700}
.price-note{display:block;font-size:.75rem;color:var(--text-faint);margin-top:2px}
.fine-print{font-size:.78rem;color:var(--text-faint)}
.fine-print.center{text-align:center;max-width:640px;margin:24px auto 0}

/* CALCULATOR */
.calc-card{
  display:flex;gap:40px;flex-wrap:wrap;
  background:var(--surface);border:1px solid var(--border);border-radius:24px;padding:40px;
}
.calc-inputs{flex:1 1 280px;display:flex;flex-direction:column;gap:18px}
.calc-inputs label{display:flex;flex-direction:column;gap:7px;font-size:.85rem;color:var(--text-dim)}
.calc-inputs input,.calc-inputs select{
  background:var(--bg-alt);border:1px solid var(--border);border-radius:10px;
  padding:11px 14px;color:var(--text);outline:none;transition:border-color .2s;
}
.calc-inputs input:focus,.calc-inputs select:focus{border-color:var(--cyan)}
.input-row{display:flex;gap:10px}
.input-row input{flex:1}
.input-row select{width:90px}

.calc-results{flex:1 1 280px;display:flex;flex-direction:column;gap:14px}
.result{
  display:flex;justify-content:space-between;align-items:center;
  background:var(--bg-alt);border:1px solid var(--border);border-radius:12px;padding:16px 18px;
}
.result.highlight{border-color:rgba(34,211,238,.4);box-shadow:0 0 24px -8px rgba(34,211,238,.4)}
.result-label{color:var(--text-dim);font-size:.88rem}
.result-val{font-weight:700;font-size:1.15rem}
.syringe-wrap{margin-top:6px}
.syringe-svg{width:100%;height:auto;overflow:visible}
#syrLiquid{transition:width .3s ease}
#syrPlunger{transition:transform .3s ease}
.syringe-ticks{display:flex;justify-content:space-between;font-size:.68rem;color:var(--text-faint);margin-top:6px;padding:0 30px}

/* QUALITY STEPS */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:26px 22px;
  transition:transform .25s ease, border-color .25s ease;
}
.step:hover{transform:translateY(-6px);border-color:rgba(34,211,238,.4)}
.step-num{
  font-size:.85rem;font-weight:700;color:var(--cyan);margin-bottom:14px;
  width:34px;height:34px;border:1px solid var(--border);border-radius:10px;
  display:flex;align-items:center;justify-content:center;
}
.step h3{font-size:1.05rem;margin-bottom:8px}
.step p{color:var(--text-dim);font-size:.9rem}

/* FAQ */
.faq-list{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--border);border-radius:14px;background:var(--surface);overflow:hidden}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;
  background:none;border:none;padding:20px 22px;text-align:left;font-weight:600;cursor:pointer;color:var(--text);
}
.faq-q svg{width:18px;height:18px;stroke:var(--text-dim);fill:none;stroke-width:2;flex-shrink:0;transition:transform .25s ease}
.faq-item.open .faq-q svg{transform:rotate(180deg);stroke:var(--cyan)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 20px;color:var(--text-dim);font-size:.92rem}

/* CONTACT */
.contact-form{max-width:640px;margin:0 auto;display:flex;flex-direction:column;gap:18px}
.form-row{display:flex;gap:18px;flex-wrap:wrap}
.form-row label{flex:1 1 220px}
.contact-form label{display:flex;flex-direction:column;gap:7px;font-size:.85rem;color:var(--text-dim)}
.contact-form input,.contact-form textarea,.contact-form select{
  background:var(--surface);border:1px solid var(--border);border-radius:10px;
  padding:12px 14px;color:var(--text);outline:none;resize:vertical;transition:border-color .2s;
}
.contact-form input:focus,.contact-form textarea:focus,.contact-form select:focus{border-color:var(--cyan)}
.form-note{text-align:center;font-size:.78rem;color:var(--text-faint)}

/* FOOTER */
.site-footer{position:relative;z-index:1;border-top:1px solid var(--border);padding:60px 28px 30px;background:var(--bg-alt)}
.footer-inner{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;flex-wrap:wrap;gap:30px;margin-bottom:36px}
.footer-brand p{color:var(--text-faint);font-size:.85rem;margin-top:8px;max-width:280px}
.footer-links{display:flex;gap:22px;flex-wrap:wrap;align-self:center;color:var(--text-dim);font-size:.9rem}
.footer-links a:hover{color:var(--cyan)}
.disclaimer{
  max-width:1200px;margin:0 auto 26px;padding:20px 22px;
  border:1px solid var(--border);border-radius:14px;
  color:var(--text-faint);font-size:.78rem;line-height:1.7;background:rgba(255,255,255,.015);
}
.disclaimer strong{color:var(--text-dim)}
.footer-bottom{max-width:1200px;margin:0 auto;color:var(--text-faint);font-size:.78rem;text-align:center}

/* RESPONSIVE */
@media (max-width:860px){
  .nav-links{position:fixed;top:96px;left:0;right:0;background:var(--bg);
    flex-direction:column;padding:20px 28px;gap:18px;border-bottom:1px solid var(--border);
    transform:translateY(-140%);transition:transform .3s ease;z-index:100;
  }
  .nav-links.open{transform:translateY(0)}
  .nav-cta{display:none}
  .nav-toggle{display:flex}
  .hero{padding-top:152px}
  .hero-badges{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr 1fr}
}
@media (max-width:560px){
  .steps{grid-template-columns:1fr}
  .product-card,.calc-card{padding:26px}
  section.product,section.calculator,section.quality,section.faq,section.contact{padding:70px 20px}
}