:root{
  --orange:#ff7900;
  --orange-deep:#e75500;
  --purple:#4b1680;
  --purple-dark:#241036;
  --ink:#201827;
  --muted:#6f6676;
  --paper:#fffdfb;
  --line:#eadfe7;
  --green:#12966f;
  --shadow:0 22px 55px rgba(54,20,73,.14);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:
    radial-gradient(circle at 8% 12%,rgba(255,121,0,.12),transparent 26rem),
    radial-gradient(circle at 92% 14%,rgba(75,22,128,.11),transparent 27rem),
    #f7f2f7;
}
button,input{font:inherit}
button{cursor:pointer}
.calc-header{
  position:sticky;
  top:0;
  z-index:20;
  display:grid;
  grid-template-columns:minmax(190px,1fr) auto minmax(190px,1fr);
  align-items:center;
  gap:1.25rem;
  min-height:88px;
  padding:.8rem clamp(1rem,4vw,4rem);
  border-bottom:4px solid var(--orange);
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(16px);
  box-shadow:0 8px 28px rgba(31,12,44,.09);
}
.brand{display:flex;align-items:center;min-width:0}
.brand img{display:block;max-height:58px;max-width:250px;width:auto;object-fit:contain}
.brand-realfit{justify-content:flex-end}
.brand-realfit img{max-height:52px}
.header-center{text-align:center;line-height:1.1}
.header-center span{display:block;color:var(--orange-deep);font-size:.68rem;font-weight:900;letter-spacing:.15em;text-transform:uppercase}
.header-center strong{display:block;margin-top:.3rem;color:var(--purple);font-size:clamp(1rem,2vw,1.45rem)}
.calc-page{width:min(1220px,calc(100% - 2rem));margin:2rem auto 3rem}
.intro-card,.calculator-card,.result-section,.safety-card{
  border:1px solid rgba(75,22,128,.12);
  border-radius:28px;
  background:rgba(255,255,255,.95);
  box-shadow:var(--shadow);
}
.intro-card{
  display:flex;
  justify-content:space-between;
  gap:2rem;
  align-items:flex-end;
  padding:clamp(1.4rem,4vw,2.6rem);
  overflow:hidden;
  position:relative;
}
.intro-card:after{
  content:"100";
  position:absolute;
  right:6%;
  top:-24%;
  color:rgba(255,121,0,.06);
  font-size:15rem;
  font-weight:1000;
  line-height:1;
  pointer-events:none;
}
.eyebrow,.step-label{margin:0;color:var(--orange-deep);font-size:.74rem;font-weight:950;letter-spacing:.14em;text-transform:uppercase}
h1{max-width:850px;margin:.45rem 0 .7rem;font-size:clamp(1.8rem,4vw,3.35rem);line-height:1.02;letter-spacing:-.045em;color:var(--purple-dark)}
.intro-copy{max-width:910px;margin:0;color:#5f5565;font-size:clamp(.98rem,1.7vw,1.1rem);line-height:1.65}
.example-box{
  position:relative;
  z-index:1;
  max-width:960px;
  margin:1.25rem 0 0;
  padding:1rem 1.1rem;
  border:1px solid #ffd0a3;
  border-left:5px solid var(--orange);
  border-radius:16px;
  background:linear-gradient(135deg,#fff8f0,#fff);
  box-shadow:0 10px 24px rgba(154,74,0,.08);
}
.example-label{display:block;margin-bottom:.45rem;color:var(--orange-deep);font-size:.78rem;font-weight:950;letter-spacing:.14em;text-transform:uppercase}
.example-box p{margin:.45rem 0 0;color:#55485d;font-size:.96rem;line-height:1.65}
.example-box strong{color:var(--purple-dark)}
.back-button{
  position:relative;
  z-index:1;
  flex:0 0 auto;
  padding:.85rem 1.05rem;
  border:1px solid rgba(75,22,128,.16);
  border-radius:999px;
  color:var(--purple);
  background:#fff;
  font-weight:850;
  text-decoration:none;
  box-shadow:0 8px 20px rgba(75,22,128,.1);
}
.calculator-card{margin-top:1.25rem;padding:clamp(1.25rem,3vw,2rem)}
.calculator-heading,.result-topline,.syringe-title-row{display:flex;justify-content:space-between;gap:1rem;align-items:center}
h2{margin:.35rem 0 0;color:var(--purple-dark);font-size:clamp(1.35rem,2.5vw,2rem);letter-spacing:-.025em}
.u100-badge{
  padding:.55rem .8rem;
  border-radius:999px;
  background:linear-gradient(135deg,var(--purple),#7b31a9);
  color:#fff;
  font-size:.75rem;
  font-weight:900;
  letter-spacing:.08em;
  text-transform:uppercase;
}
.vial-options{
  display:grid;
  grid-template-columns:repeat(7,minmax(0,1fr));
  gap:.75rem;
  margin:1.4rem 0;
}
.vial-option{
  min-height:102px;
  padding:.85rem .5rem;
  border:2px solid #e9dfea;
  border-radius:20px;
  color:var(--purple-dark);
  background:linear-gradient(180deg,#fff,#faf6fb);
  box-shadow:0 10px 20px rgba(60,27,78,.06);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.vial-option:hover{transform:translateY(-3px);border-color:rgba(255,121,0,.5);box-shadow:0 14px 24px rgba(60,27,78,.11)}
.vial-option strong{display:block;font-size:2rem;line-height:1;color:var(--purple)}
.vial-option span{display:block;margin-top:.45rem;color:var(--muted);font-size:.82rem;font-weight:800;text-transform:uppercase;letter-spacing:.07em}
.vial-option.active{border-color:var(--orange);background:linear-gradient(145deg,#fff5ea,#fff);box-shadow:0 15px 28px rgba(255,121,0,.2)}
.vial-option.active strong{color:var(--orange-deep)}
.preset-row{
  display:flex;
  justify-content:space-between;
  gap:1.25rem;
  align-items:center;
  padding:1rem 1.1rem;
  border:1px solid #eadfed;
  border-radius:20px;
  background:#fcf9fd;
}
.preset-copy{display:flex;flex-direction:column;gap:.25rem}
.preset-label{color:var(--green);font-size:.72rem;font-weight:950;letter-spacing:.12em;text-transform:uppercase}
.preset-copy strong{font-size:1.05rem;color:var(--purple-dark)}
.preset-copy small{color:var(--muted);line-height:1.4}
.calculate-button{
  display:inline-flex;
  align-items:center;
  gap:.8rem;
  flex:0 0 auto;
  padding:1rem 1.2rem;
  border:0;
  border-radius:16px;
  background:linear-gradient(135deg,var(--orange),#ff4e00);
  color:#fff;
  font-weight:950;
  box-shadow:0 14px 26px rgba(255,94,0,.28);
}
.calculate-button span{font-size:1.35rem;line-height:1}
.calculate-button:disabled{cursor:not-allowed;filter:grayscale(.85);opacity:.48;box-shadow:none}
.result-section{margin-top:1.25rem;padding:clamp(1.25rem,3vw,2rem)}
.text-button{border:0;background:transparent;color:var(--purple);font-weight:850;text-decoration:underline;text-underline-offset:4px}
.result-grid{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(280px,.75fr);gap:1rem;margin-top:1rem}
.result-main-card{
  overflow:hidden;
  border-radius:24px;
  color:#fff;
  background:
    radial-gradient(circle at 90% 10%,rgba(255,121,0,.2),transparent 23rem),
    linear-gradient(135deg,#1b121f,#291333 62%,#1a111d);
  box-shadow:0 22px 42px rgba(27,12,31,.28);
}
.draw-heading{text-align:center;padding:1.5rem 1rem 1.15rem;border-bottom:1px solid rgba(255,255,255,.1)}
.draw-heading>span{display:block;color:#d7bce4;font-size:.72rem;font-weight:900;letter-spacing:.16em;text-transform:uppercase}
.draw-heading strong{display:flex;justify-content:center;align-items:baseline;gap:.5rem;margin:.3rem 0}
.draw-heading b{font-size:clamp(3rem,7vw,5.5rem);line-height:1;font-weight:500;font-family:Georgia,"Times New Roman",serif}
.draw-heading em{color:var(--orange);font-size:1.15rem;font-style:normal;font-weight:900}
.draw-heading small{color:#c8bbc9}
.metric-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-bottom:1px solid rgba(255,255,255,.1)}
.metric-grid div{padding:1rem .7rem;text-align:center;border-right:1px solid rgba(255,255,255,.08)}
.metric-grid div:last-child{border-right:0}
.metric-grid span{display:block;min-height:2.1em;color:#ad9ab0;font-size:.65rem;font-weight:850;letter-spacing:.08em;text-transform:uppercase}
.metric-grid strong{display:block;margin-top:.25rem;font-size:1.02rem}
.syringe-panel{padding:1.25rem 1.3rem 1.45rem}
.syringe-title-row span{color:#cdbbd1;font-size:.75rem;font-weight:900;letter-spacing:.12em;text-transform:uppercase}
.syringe-title-row strong{color:#fff;font-size:.78rem}
.syringe-wrap{display:grid;grid-template-columns:42px 68px minmax(0,1fr) 24px 92px;align-items:center;margin-top:1rem;height:74px}
.plunger-handle{height:58px;border:3px solid #cabfc8;border-radius:8px;background:#282029;box-shadow:inset 0 0 0 5px #151016}
.plunger-rod{height:15px;border:3px solid #cabfc8;border-left:0;background:#282029}
.syringe-barrel{position:relative;height:52px;overflow:visible;border:3px solid #d9d1d8;border-radius:9px;background:#242024;box-shadow:inset 0 0 0 2px rgba(0,0,0,.35)}
.syringe-fill{position:absolute;inset:0 auto 0 0;width:0;border-radius:5px 0 0 5px;background:linear-gradient(90deg,#ff7900,#ff4d00);box-shadow:inset 0 0 18px rgba(255,255,255,.16);transition:width .45s ease}
.syringe-marker{position:absolute;top:-15px;bottom:-15px;left:0;width:2px;background:#fff;box-shadow:0 0 0 2px rgba(255,121,0,.7),0 0 16px rgba(255,121,0,.9);transition:left .45s ease}
.syringe-marker span{position:absolute;left:50%;top:-26px;transform:translateX(-50%);white-space:nowrap;padding:.22rem .4rem;border-radius:8px;background:#fff;color:#301638;font-size:.68rem;font-weight:950;box-shadow:0 6px 14px rgba(0,0,0,.25)}
.syringe-ticks{position:absolute;inset:0;pointer-events:none}
.syringe-tick{position:absolute;bottom:0;width:1px;background:rgba(255,255,255,.55);transform:translateX(-.5px)}
.syringe-tick.minor{height:12px}
.syringe-tick.mid{height:20px}
.syringe-tick.major{height:30px;width:2px;background:#fff}
.syringe-neck{height:26px;border:3px solid #d9d1d8;border-left:0;background:#252126;clip-path:polygon(0 0,100% 26%,100% 74%,0 100%)}
.needle{height:3px;background:linear-gradient(90deg,#d9d1d8,#fff 70%,transparent);position:relative}
.needle:after{content:"";position:absolute;right:-5px;top:-2px;border-left:8px solid #fff;border-top:3px solid transparent;border-bottom:3px solid transparent}
.syringe-numbers{display:grid;grid-template-columns:repeat(11,1fr);margin:0 114px 0 110px;color:#aa9cab;font-size:.65rem;text-align:center}
.syringe-numbers span:first-child{text-align:left}.syringe-numbers span:last-child{text-align:right}
.syringe-message{margin:.9rem 0 0;color:#d8cadb;font-size:.8rem;line-height:1.5}
.syringe-message.warning{color:#ffd0b2;font-weight:800}
.controls-card{display:flex;flex-direction:column;gap:1rem;padding:1.15rem;border:1px solid #e8dce9;border-radius:24px;background:#fffaf5}
.control-block{display:flex;flex-direction:column;gap:.45rem}
.control-block label,.quick-dose-block>span{font-weight:900;color:var(--purple-dark)}
.input-shell{display:flex;align-items:center;overflow:hidden;border:2px solid #eadfe9;border-radius:14px;background:#fff;transition:border-color .18s ease,box-shadow .18s ease}
.input-shell:focus-within{border-color:var(--orange);box-shadow:0 0 0 4px rgba(255,121,0,.12)}
.input-shell input{min-width:0;width:100%;padding:.85rem;border:0;outline:0;font-size:1.15rem;font-weight:900;color:var(--purple-dark);background:transparent}
.input-shell span{padding:.85rem .8rem;color:var(--muted);font-weight:850;background:#faf6fb}
.control-block small{color:var(--muted);line-height:1.45}
.quick-dose-block{display:flex;flex-direction:column;gap:.55rem}
.quick-dose-buttons{display:grid;grid-template-columns:repeat(2,1fr);gap:.45rem}
.quick-dose-buttons button{padding:.6rem .45rem;border:1px solid #ded0e3;border-radius:11px;color:var(--purple);background:#fff;font-size:.8rem;font-weight:850}
.quick-dose-buttons button:hover,.quick-dose-buttons button.active{border-color:var(--orange);color:#fff;background:var(--orange)}
.formula-card{margin-top:auto;padding:.85rem;border-radius:14px;background:var(--purple-dark);color:#fff}
.formula-card span{display:block;color:#d3bddf;font-size:.7rem;font-weight:900;letter-spacing:.1em;text-transform:uppercase}
.formula-card code{display:block;margin-top:.45rem;white-space:normal;color:#fff3e8;font-size:.82rem}
.safety-card{display:flex;gap:1rem;align-items:flex-start;margin-top:1.25rem;padding:1.25rem 1.4rem;border-color:#fed7aa;background:#fff7ed;box-shadow:0 15px 32px rgba(139,69,0,.09)}
.safety-icon{display:grid;place-items:center;flex:0 0 42px;width:42px;height:42px;border-radius:50%;color:#fff;background:var(--orange);font-size:1.35rem;font-weight:1000}
.safety-card h2{margin:0;font-size:1.12rem;color:#8a3e00}
.safety-card p{margin:.4rem 0 0;color:#6d431f;line-height:1.55}
.calc-footer{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap;padding:1.2rem 1rem;border-top:1px solid #ded1df;color:#746878;background:#fff;font-size:.78rem;font-weight:800}
.calc-footer span+span:before{content:"•";margin-right:1rem;color:var(--orange)}
[hidden]{display:none!important}
@media(max-width:1050px){
  .calc-header{grid-template-columns:1fr auto}.brand-realfit{display:none}
  .header-center{text-align:right}
  .vial-options{grid-template-columns:repeat(4,1fr)}
  .result-grid{grid-template-columns:1fr}
  .controls-card{display:grid;grid-template-columns:1fr 1fr;align-items:start}
  .quick-dose-block,.formula-card{grid-column:1 / -1}
}
@media(max-width:760px){
  .calc-header{position:static;grid-template-columns:1fr;padding:.7rem 1rem;text-align:center}.brand-pepshop{justify-content:center}.header-center{text-align:center}.brand img{max-height:46px}
  .calc-page{width:min(100% - 1rem,1220px);margin:1rem auto 2rem}
  .intro-card{display:block}.back-button{display:inline-flex;margin-top:1rem}
  .calculator-heading,.preset-row,.result-topline{align-items:flex-start;flex-direction:column}
  .calculate-button{width:100%;justify-content:center}
  .vial-options{grid-template-columns:repeat(3,1fr)}
  .metric-grid{grid-template-columns:repeat(2,1fr)}.metric-grid div{border-bottom:1px solid rgba(255,255,255,.08)}
  .metric-grid div:last-child{grid-column:1 / -1}
  .syringe-wrap{grid-template-columns:24px 34px minmax(0,1fr) 14px 42px;height:68px}
  .plunger-handle{height:48px}.plunger-rod{height:12px}.syringe-barrel{height:46px}.syringe-numbers{margin:0 54px 0 58px;font-size:.55rem}
  .controls-card{display:flex}
}
@media(max-width:480px){
  .vial-options{grid-template-columns:repeat(2,1fr)}
  .vial-option{min-height:88px}.vial-option strong{font-size:1.65rem}
  .syringe-panel{padding:1.2rem .75rem 1.35rem}
  .syringe-title-row{align-items:flex-start;flex-direction:column;gap:.25rem}
  .syringe-wrap{grid-template-columns:18px 20px minmax(0,1fr) 10px 24px}.syringe-numbers{margin:0 32px 0 38px}.syringe-marker span{font-size:.58rem}
  .calc-footer{gap:.35rem}.calc-footer span{width:100%;text-align:center}.calc-footer span+span:before{display:none}
}

/* Example narration controls */
.example-heading-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  flex-wrap:wrap;
}
.example-heading-row .example-label{margin-bottom:0}
.narration-controls{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:.5rem;
  flex-wrap:wrap;
}
.narration-primary,.narration-secondary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.45rem;
  min-height:42px;
  border-radius:12px;
  font-weight:900;
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease,border-color .16s ease;
}
.narration-primary{
  padding:.7rem .95rem;
  border:0;
  color:#fff;
  background:linear-gradient(135deg,var(--purple),#7b31a9);
  box-shadow:0 9px 20px rgba(75,22,128,.2);
}
.narration-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 12px 24px rgba(75,22,128,.26)}
.narration-primary:focus-visible,.narration-secondary:focus-visible,.narration-rate select:focus-visible{
  outline:3px solid rgba(255,121,0,.35);
  outline-offset:2px;
}
.narration-primary:disabled{cursor:not-allowed;opacity:.55;box-shadow:none}
.narration-primary.is-speaking{background:linear-gradient(135deg,var(--orange),#ff4e00)}
.narration-primary.is-paused{background:linear-gradient(135deg,#8b5b00,#b87900)}
.narration-icon{font-size:1rem;line-height:1}
.narration-secondary{
  padding:.62rem .78rem;
  border:1px solid rgba(75,22,128,.2);
  color:var(--purple);
  background:#fff;
}
.narration-secondary:hover{border-color:var(--orange);color:var(--orange-deep);background:#fff8f0}
.narration-rate{
  display:flex;
  align-items:center;
  gap:.4rem;
  padding:.28rem .35rem .28rem .65rem;
  border:1px solid rgba(75,22,128,.15);
  border-radius:12px;
  color:#5d5264;
  background:#fff;
  font-size:.74rem;
  font-weight:850;
}
.narration-rate select{
  min-height:32px;
  padding:.25rem 1.65rem .25rem .45rem;
  border:0;
  border-radius:8px;
  color:var(--purple-dark);
  background:#f7f0f8;
  font-size:.78rem;
  font-weight:900;
}
.narration-voice select{max-width:230px}
.narration-status{
  margin:.7rem 0 .2rem!important;
  padding:.55rem .7rem;
  border-radius:10px;
  color:#66556d!important;
  background:rgba(75,22,128,.055);
  font-size:.82rem!important;
  line-height:1.4!important;
}
.narration-status.is-error{color:#8a3e00!important;background:#fff0e3}
.example-narration-text p{margin:.45rem 0 0}
.narration-sentence{
  display:inline;
  border-radius:5px;
  transition:background .18s ease,box-shadow .18s ease,color .18s ease;
}
.narration-sentence>span{box-decoration-break:clone;-webkit-box-decoration-break:clone}
.narration-sentence.is-speaking>span{
  padding:.08rem .16rem;
  color:#261233;
  background:#ffe4c5;
  box-shadow:0 0 0 2px rgba(255,121,0,.2);
}
.narration-sentence.is-speaking strong{color:#3a1261}

@media(max-width:760px){
  .example-heading-row{align-items:flex-start;flex-direction:column}
  .narration-controls{width:100%;justify-content:flex-start}
  .narration-primary{flex:1 1 210px}
}
@media(max-width:480px){
  .narration-controls{display:grid;grid-template-columns:1fr 1fr}
  .narration-primary,.narration-rate{grid-column:1 / -1;width:100%}
  .narration-rate{justify-content:space-between}
  .narration-rate select{max-width:62%}
  .narration-secondary{width:100%}
}