@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Oswald:wght@200;300;500;600;700&display=swap');
  :root{
    --bg:#050506;--bg-2:#111113;--ink:#f4f4f5;--ink-dim:#8a8a90;
    --line:rgba(255,255,255,.10);--line-2:rgba(255,255,255,.06);--iris:#9fd4e8;
    --nav-h:60px;
  }
  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:smooth}
  html{background:var(--bg)}body{background:transparent;color:var(--ink);font-family:'Inter',sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden;line-height:1.5}
  a{color:inherit}
  ::selection{background:rgba(159,212,232,.25)}
  :focus-visible{outline:2px solid var(--iris);outline-offset:3px;border-radius:2px}
  img{max-width:100%;display:block}

  /* ---------- background ---------- */
  .bg-stage{position:fixed;inset:0;z-index:-2;overflow:hidden;background:radial-gradient(120% 90% at 50% -10%,#1a1c22 0%,#0a0a0c 40%,#050506 75%)}
  .hero-vid{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.85;filter:saturate(1.05) contrast(1.02)}
  .vid-overlay{position:absolute;inset:0;background:radial-gradient(120% 100% at 50% 30%,rgba(5,5,6,.35) 0%,rgba(5,5,6,.62) 55%,rgba(5,5,6,.85) 100%);z-index:1}
  @media(max-width:640px){ .hero-vid{opacity:.8} }
  .orb{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;mix-blend-mode:screen}
  .orb.a{width:60vw;height:60vw;top:-15%;left:-10%;background:radial-gradient(circle at 40% 40%,rgba(200,210,225,.32),transparent 62%);animation:fa 22s ease-in-out infinite alternate}
  .orb.b{width:50vw;height:50vw;bottom:-20%;right:-12%;background:radial-gradient(circle at 50% 50%,rgba(159,212,232,.20),transparent 60%);animation:fb 28s ease-in-out infinite alternate}
  .orb.c{width:40vw;height:40vw;top:30%;left:55%;background:radial-gradient(circle at 50% 50%,rgba(180,170,210,.16),transparent 60%);animation:fc 25s ease-in-out infinite alternate}
  @keyframes fa{from{transform:translate(0,0) scale(1)}to{transform:translate(8vw,6vh) scale(1.15)}}
  @keyframes fb{from{transform:translate(0,0) scale(1.1)}to{transform:translate(-7vw,-5vh) scale(1)}}
  @keyframes fc{from{transform:translate(0,0) scale(1);opacity:.5}to{transform:translate(-6vw,7vh) scale(1.2);opacity:.8}}
  .sweep{position:absolute;inset:-50%;background:linear-gradient(115deg,transparent 42%,rgba(255,255,255,.06) 49%,rgba(255,255,255,.13) 50%,rgba(255,255,255,.06) 51%,transparent 58%);animation:sw 11s ease-in-out infinite}
  @keyframes sw{0%{transform:translateX(-30%);opacity:0}35%{opacity:1}70%{opacity:0}100%{transform:translateX(30%);opacity:0}}
  .grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:64px 64px;-webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 40%,#000 30%,transparent 80%);mask-image:radial-gradient(ellipse 80% 70% at 50% 40%,#000 30%,transparent 80%)}
  #nodeField{position:absolute;inset:0;width:100%;height:100%;display:block;opacity:.55;pointer-events:none}
  .grain{position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.05;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
  .vignette{position:fixed;inset:0;z-index:-1;pointer-events:none;background:radial-gradient(ellipse 90% 80% at 50% 45%,transparent 55%,rgba(0,0,0,.65) 100%)}

  /* ---------- nav ---------- */
  nav{position:fixed;top:0;left:0;right:0;z-index:100;display:flex;align-items:center;justify-content:space-between;padding:8px 22px;padding-top:calc(8px + env(safe-area-inset-top));backdrop-filter:blur(12px);background:linear-gradient(to bottom,rgba(5,5,6,.55),transparent);transition:background .35s,border-color .35s;border-bottom:1px solid transparent}
  /* ===== Reviews chyron (scrolling banner) ===== */
  .chyron{position:relative;z-index:2;width:100%;height:44px;margin-top:8px;overflow:hidden;display:flex;align-items:center;background:linear-gradient(90deg,rgba(159,212,232,.10),rgba(159,212,232,.04));border-top:1px solid rgba(159,212,232,.18);border-bottom:1px solid rgba(159,212,232,.18);backdrop-filter:blur(10px);-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
  .chyron-track{display:flex;align-items:center;white-space:nowrap;will-change:transform;animation:chyron-scroll 65s linear infinite}
  .chyron:hover .chyron-track{animation-play-state:paused}
  .chyron-item{display:inline-flex;align-items:center;gap:9px;padding:0 26px;font-size:13px;color:var(--ink);letter-spacing:.01em}
  .chyron-item .cy-stars{color:#f4c66a;letter-spacing:1px;font-size:12px}
  .chyron-item .cy-text{color:var(--ink-dim)}
  .chyron-item .cy-name{color:var(--iris);font-weight:600}
  .chyron-item .cy-dot{width:4px;height:4px;border-radius:50%;background:rgba(159,212,232,.4)}
  @keyframes chyron-scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
  @media(max-width:640px){ .chyron{height:40px} .chyron-item{font-size:12px;padding:0 18px} }
  nav.scrolled{background:transparent;border-bottom:1px solid transparent}
  .nav-logo{height:clamp(48px,7vw,84px);width:auto}
  .nav-links{display:flex;gap:26px;align-items:center}
  .nav-links a{color:var(--ink-dim);text-decoration:none;font-size:12px;letter-spacing:.14em;text-transform:uppercase;transition:color .3s;position:relative}
  .nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:1px;background:var(--iris);transition:width .3s}
  .nav-links a:hover{color:var(--ink)}
  .nav-links a:hover::after{width:100%}
  .nav-cta{border:1px solid var(--line);padding:9px 18px;border-radius:2px;color:var(--ink)!important}
  .nav-cta:hover{border-color:var(--iris)}
  .nav-cta::after{display:none}
  .menu-btn{display:none;background:none;border:0;cursor:pointer;width:30px;height:24px;position:relative;z-index:120}
  .menu-btn span{position:absolute;left:0;width:100%;height:2px;background:var(--ink);transition:transform .3s,opacity .3s;border-radius:2px}
  .menu-btn span:nth-child(1){top:3px}
  .menu-btn span:nth-child(2){top:11px}
  .menu-btn span:nth-child(3){top:19px}
  body.menu-open .menu-btn span:nth-child(1){transform:translateY(8px) rotate(45deg)}
  body.menu-open .menu-btn span:nth-child(2){opacity:0}
  body.menu-open .menu-btn span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

  /* mobile drawer */
  .drawer{position:fixed;inset:0;z-index:110;background:rgba(5,5,6,.97);backdrop-filter:blur(20px);display:flex;flex-direction:column;justify-content:center;align-items:center;gap:6px;opacity:0;pointer-events:none;transition:opacity .35s}
  body.menu-open .drawer{opacity:1;pointer-events:auto}
  .drawer a{color:var(--ink);text-decoration:none;font-family:'Oswald',sans-serif;text-transform:uppercase;font-size:26px;letter-spacing:.05em;padding:14px;opacity:.85;transition:opacity .25s,letter-spacing .25s}
  .drawer a:hover,.drawer a:active{opacity:1;letter-spacing:.1em}
  .drawer .drawer-fine{font-family:'Inter',sans-serif;font-size:10px;letter-spacing:.28em;color:var(--ink-dim);margin-top:24px}

  /* ---------- hero ---------- */
  .hero{min-height:auto;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;position:relative;padding:120px 24px 48px}
  h1{font-family:'Oswald',sans-serif;font-weight:600;text-transform:uppercase;line-height:.92;letter-spacing:.01em;font-size:clamp(40px,8.5vw,118px);opacity:0;animation:rise 1s ease .45s forwards,sheen 9s ease-in-out 1.4s infinite alternate;background:linear-gradient(105deg,#ffffff 0%,#eef0f4 24%,#c4c8d0 40%,#ffffff 52%,#dfe2e8 64%,#b9c6cf 78%,#f4f6fa 100%);background-size:220% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent;filter:drop-shadow(0 1px 18px rgba(180,200,220,.12))}
  h1 .light{display:block;font-weight:500}
  
  @keyframes sheen{from{background-position:0% 50%}to{background-position:100% 50%}}
  .fineprint{margin-top:22px;max-width:460px;font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;line-height:1.5;color:var(--ink-dim);opacity:0;animation:rise 1s ease .65s forwards}
  .cta-row{margin-top:40px;display:flex;gap:14px;flex-wrap:wrap;justify-content:center;width:100%;max-width:620px;opacity:0;animation:rise 1s ease .85s forwards}
  .madein{margin-top:34px;font-family:'Oswald',sans-serif;font-weight:600;text-transform:uppercase;font-size:clamp(28px,5.5vw,72px);line-height:.96;letter-spacing:.01em;color:var(--ink);opacity:0;animation:rise 1s ease 1s forwards}

  .btn{flex:1 1 auto;min-width:160px;text-align:center;position:relative;overflow:hidden;padding:17px 32px;font-size:12px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;text-decoration:none;border-radius:3px;border:1px solid transparent;background-clip:padding-box;transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .45s,filter .35s;cursor:pointer;z-index:0}
  /* primary = brushed chrome */
  .btn.primary{color:#0c0d0f;background:linear-gradient(150deg,#f7f8fa 0%,#d6dade 28%,#aeb4bb 50%,#e9ecef 64%,#bcc2c9 82%,#f2f4f6 100%);box-shadow:0 6px 22px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.85),inset 0 -2px 6px rgba(0,0,0,.18)}
  .btn.primary::after{content:"";position:absolute;top:0;left:-120%;width:55%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.85),transparent);transform:skewX(-18deg);transition:left .7s ease;z-index:2}
  @media (hover:hover){.btn.primary:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(0,0,0,.55),0 0 30px rgba(159,212,232,.35),inset 0 1px 0 rgba(255,255,255,.9)}.btn.primary:hover::after{left:130%}}
  /* secondary = iridescent glass */
  .btn{color:var(--ink);background:rgba(17,17,19,.5);backdrop-filter:blur(8px)}
  .btn::before{content:"";position:absolute;inset:0;border-radius:3px;padding:1.4px;background:linear-gradient(135deg,#9fd4e8,#c9ccd1 30%,#5a5c61 52%,#b9a6d8 72%,#9fd4e8);background-size:200% 200%;-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:.55;transition:opacity .4s;animation:irisflow 6s linear infinite;z-index:1}
  @keyframes irisflow{0%{background-position:0% 50%}100%{background-position:200% 50%}}
  .btn span,.btn svg{position:relative;z-index:3}
  .btn:active{transform:translateY(0) scale(.99)}
  @media (hover:hover){.btn:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(0,0,0,.5),0 0 26px rgba(159,212,232,.22)}.btn:hover::before{opacity:1}}
  .btn.primary::before{display:none}
  .scroll-cue-low{display:flex;margin:0 auto 18px;justify-content:center}
  .scroll-cue{position:relative;margin-top:34px;left:auto;transform:none;display:inline-flex;flex-direction:column;align-items:center;font-size:10px;letter-spacing:.3em;text-transform:uppercase;color:var(--ink-dim);opacity:0;animation:rise 1s ease 1.1s forwards;display:flex;flex-direction:column;align-items:center;gap:8px}
  .scroll-cue .line{width:1px;height:34px;background:linear-gradient(to bottom,var(--ink-dim),transparent);animation:cue 2s ease-in-out infinite}
  @keyframes cue{0%,100%{opacity:.3;transform:scaleY(.6)}50%{opacity:1;transform:scaleY(1)}}
  @keyframes rise{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:translateY(0)}}

  /* ---------- shared section system ---------- */
  section{position:relative;z-index:1}
  .wrap{max-width:1100px;margin:0 auto;padding:0 26px}
  .eyebrow{font-size:11px;letter-spacing:.34em;text-transform:uppercase;color:var(--iris);opacity:.85;margin-bottom:18px;display:flex;align-items:center;gap:12px}
  .eyebrow::before{content:"";width:26px;height:1px;background:var(--iris);opacity:.5}
  .sec-title{font-family:'Oswald',sans-serif;font-weight:600;text-transform:uppercase;font-size:clamp(26px,4.6vw,44px);line-height:1.02;letter-spacing:.01em;margin-bottom:20px}
  .sec-lead{max-width:560px;color:var(--ink-dim);font-size:15.5px;line-height:1.7}
  .divider{height:2px;position:relative;z-index:1;background:linear-gradient(90deg,transparent,#43454a 15%,#fff 50%,#43454a 85%,transparent);opacity:.45}

  /* reveal on scroll */
  .reveal{opacity:0;transform:translateY(28px);transition:opacity .8s ease,transform .8s ease}
  .reveal.in{opacity:1;transform:none}

  /* ---------- pillars strip ---------- */
  .strip{display:grid;grid-template-columns:repeat(3,1fr);max-width:1100px;margin:0 auto;padding:84px 26px 48px}
  .cell{padding:0 26px;border-left:1px solid var(--line)}
  .cell:first-child{border-left:none}
  .cell .num{font-family:'Oswald',sans-serif;font-size:13px;letter-spacing:.2em;color:var(--iris);opacity:.8;margin-bottom:16px}
  .cell h3{font-family:'Oswald',sans-serif;font-weight:600;text-transform:uppercase;font-size:19px;letter-spacing:.04em;margin-bottom:12px}
  .cell p{font-size:13.5px;line-height:1.65;color:var(--ink-dim)}

  /* ---------- stats band ---------- */
  .stats{border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2);background:rgba(255,255,255,.012)}
  .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);max-width:1100px;margin:0 auto;padding:56px 26px;gap:30px}
  .stat{text-align:center}
  .stat .n{font-family:'Oswald',sans-serif;font-weight:700;font-size:clamp(34px,5vw,52px);line-height:1;background:linear-gradient(105deg,#ffffff,#c4c8d0 55%,#f4f6fa);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
  .stat .l{margin-top:12px;font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-dim)}

  /* ---------- process timeline ---------- */
  .process{padding:100px 0}
  .head-row{display:flex;flex-direction:column;margin-bottom:54px}
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line-2);border:1px solid var(--line-2);border-radius:3px;overflow:hidden}
  .step{background:#0b0b0d;padding:30px 24px;position:relative;transition:background .35s}
  .step:hover{background:#101015}
  .step .s-n{font-family:'Oswald',sans-serif;font-size:12px;letter-spacing:.2em;color:var(--iris);opacity:.8;margin-bottom:18px}
  .step h4{font-family:'Oswald',sans-serif;text-transform:uppercase;font-size:17px;letter-spacing:.03em;margin-bottom:10px}
  .step p{font-size:13px;line-height:1.6;color:var(--ink-dim)}

  /* ---------- compounds ---------- */
  /* ---------- origin ---------- */
  .origin{padding:100px 0}
  .origin-card{border:1px solid var(--line);border-radius:4px;overflow:hidden;background:linear-gradient(150deg,rgba(159,212,232,.05),rgba(255,255,255,.01));position:relative}
  .origin-card::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse 60% 90% at 12% 0%,rgba(159,212,232,.12),transparent 58%);pointer-events:none}
  .origin-grid{display:grid;grid-template-columns:1.25fr .9fr;gap:0;position:relative;z-index:1}
  .origin-main{padding:clamp(34px,5vw,58px)}
  .origin-main .sec-title{margin-bottom:18px}
  .origin-main .sec-lead{margin-bottom:0}
  .origin-main .sec-lead + .sec-lead{margin-top:16px}
  .origin-rail{border-left:1px solid var(--line-2);display:flex;flex-direction:column}
  .rail-item{padding:26px clamp(22px,3vw,34px);border-bottom:1px solid var(--line-2);display:flex;flex-direction:column;gap:7px}
  .rail-item:last-child{border-bottom:none}
  .rail-item .rk{font-family:'Oswald',sans-serif;font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--iris);opacity:.85}
  .rail-item .rv{font-size:13.5px;line-height:1.6;color:var(--ink-dim)}
  .rail-item .rv b{color:var(--ink);font-weight:600}
  @media (max-width:900px){.nav-links{display:none}.menu-btn{display:block}}
  @media (max-width:860px){.origin-grid{grid-template-columns:1fr}.origin-rail{border-left:none;border-top:1px solid var(--line-2)}}

  .compounds{padding:100px 0}
  .comp-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:48px}
  .comp{position:relative;display:flex;flex-direction:column;border:1px solid var(--line);border-radius:6px;background:linear-gradient(160deg,rgba(255,255,255,.035),rgba(255,255,255,0)),rgba(9,9,11,.92);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);overflow:hidden;transition:transform .35s,border-color .35s,box-shadow .4s}
  @media (hover:hover){.comp:hover{transform:translateY(-5px);border-color:rgba(159,212,232,.45);box-shadow:0 16px 40px rgba(0,0,0,.5),0 0 30px rgba(159,212,232,.08)}.comp:hover .comp-img img{transform:scale(1.05)}}
  .comp-img{position:relative;width:100%;aspect-ratio:1/1;overflow:hidden;background:radial-gradient(ellipse 70% 70% at 50% 45%,#15171c,#070708);border-bottom:1px solid var(--line-2)}
  .comp-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease;display:block}
  .comp-img.ph{display:flex;align-items:center;justify-content:center}
  .comp-img.ph::after{content:"P\00A0P";font-family:'Oswald',sans-serif;font-weight:700;font-size:34px;letter-spacing:.1em;color:rgba(255,255,255,.07)}
  .comp-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
  .comp .tag{font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--iris);opacity:.8;margin-bottom:12px}
  .comp .name{font-family:'Oswald',sans-serif;text-transform:uppercase;font-size:23px;letter-spacing:.02em;margin-bottom:8px}
  .comp .meta{font-size:12.5px;color:var(--ink-dim);line-height:1.6;margin-bottom:18px}
  .comp .spec{display:flex;justify-content:space-between;align-items:center;font-size:11px;letter-spacing:.08em;color:var(--ink-dim);border-top:1px solid var(--line-2);padding-top:14px;margin-top:auto}
  /* mg selector on priced product cards */
  .card-mg{display:flex;align-items:center;gap:8px;margin:14px 0 0;padding-top:14px;border-top:1px solid var(--line-2)}
  .card-mg-left{display:flex;align-items:center;gap:7px;flex:1}
  .card-mg-left label{font-size:11px;letter-spacing:.06em;color:var(--ink-dim);text-transform:uppercase;font-weight:600}
  .card-mg-input{width:66px;padding:6px 8px;font-size:14px;font-weight:700;color:var(--ink);background:var(--bg-2);border:1px solid var(--line-2);border-radius:7px;text-align:center;-moz-appearance:textfield}
  .card-mg-input:focus{outline:none;border-color:var(--iris)}
  .card-mg-input::-webkit-outer-spin-button,.card-mg-input::-webkit-inner-spin-button{opacity:1;height:22px}
  .card-mg-rate{font-size:11px;color:var(--iris);letter-spacing:.02em;white-space:nowrap}
  .card-mg-price{font-family:'Oswald',sans-serif;font-weight:600;font-size:18px;color:var(--ink);letter-spacing:.01em;white-space:nowrap}
  .spec.spec-priced{display:none}
  .comp .spec b{color:var(--ink);font-weight:600}
  /* ---------- collapsible sections ---------- */
  section.sec-collapse{padding:0 !important}
  .sec-collapse{position:relative}
  /* mosaic body holder: expanded section content renders full-width here */
  .sec-bodies{width:100%}
  .sec-bodies .sec-collapse{border:none}
  .sec-bodies .sec-collapse:last-of-type{border:none}
  .sec-card{transition:box-shadow .4s,transform .3s}
  .sec-card.open{box-shadow:0 0 0 2px var(--iris),0 18px 50px -12px rgba(0,0,0,.7)}
  .sec-card:hover{transform:translateY(-3px)}
  /* MOSAIC GRID OF SECTION CARDS */
  .sec-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:clamp(10px,1.4vw,18px);padding:clamp(16px,3vw,40px) clamp(16px,5vw,64px);max-width:1500px;margin:0 auto}
  .sec-card{position:relative;border-radius:20px;overflow:hidden;min-height:0;display:flex}
  /* mosaic spans: big cards span 4 cols, small span 2; tweak per section */
  .sec-card[data-sec="compuestos"]{grid-column:1 / -1;aspect-ratio:21/9}
  .sec-card[data-sec="acceso"]{grid-column:span 3;aspect-ratio:16/10}
  .sec-card[data-sec="ciencia"]{grid-column:span 3;aspect-ratio:16/10}
  .sec-card[data-sec="origen"]{grid-column:span 2;aspect-ratio:4/5}
  .sec-card[data-sec="proceso"]{grid-column:span 2;aspect-ratio:4/5}
  .sec-card[data-sec="evidencia"]{grid-column:span 2;aspect-ratio:4/5}
  .sec-card[data-sec="faq"]{grid-column:1 / -1;aspect-ratio:24/7}
  @media(max-width:860px){
    .sec-grid{grid-template-columns:repeat(2,1fr)}
    .sec-card{grid-column:span 1 !important;aspect-ratio:1/1 !important}
    .sec-card[data-sec="compuestos"]{grid-column:span 2 !important;aspect-ratio:16/9 !important}
  }
  @media(max-width:520px){
    .sec-grid{grid-template-columns:1fr;gap:12px}
    .sec-card,.sec-card[data-sec="compuestos"]{grid-column:span 1 !important;aspect-ratio:4/3 !important}
  }
  /* ENHANCED-STYLE SECTION HERO BAR */
  .sec-toggle{position:relative;display:block;flex:1 1 auto;width:100%;align-self:stretch;cursor:pointer;border:none;padding:0;text-align:left;overflow:hidden;border-radius:20px;background:#08090b;z-index:0}
  .sec-bg{position:absolute;inset:0;z-index:0;background-size:cover;background-position:center;background-repeat:no-repeat;opacity:0;transform:scale(1.02);transition:opacity .8s ease,transform 7s ease}
  .sec-bg.loaded{opacity:1}
  .sec-toggle:hover .sec-bg{transform:scale(1.07)}
  /* scrim: dark bottom-left for text legibility, image stays vivid top-right */
  .sec-bg-veil{position:absolute;inset:0;z-index:1;background:linear-gradient(90deg,rgba(6,7,9,.9) 0%,rgba(6,7,9,.62) 32%,rgba(6,7,9,.12) 62%,rgba(6,7,9,0) 100%),linear-gradient(0deg,rgba(6,7,9,.92) 0%,rgba(6,7,9,.45) 26%,rgba(6,7,9,0) 55%)}
  .sec-collapse.open .sec-bg{transform:scale(1.04)}
  /* content layer */
  .sec-inner-row{position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;justify-content:flex-end;padding:clamp(20px,3.4vw,40px) clamp(20px,5vw,64px)}
  /* keep title clear of the bottom-right arrow on narrow cards */
  .sec-inner-row .sec-toggle-label{padding-right:64px}
  .sec-pill-row{position:absolute;z-index:2;top:clamp(20px,3.2vw,38px);left:clamp(20px,5vw,64px);display:flex;align-items:center;gap:9px}
  .sec-pill{font-family:'Inter',sans-serif;font-size:10.5px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:#fff;background:var(--iris);background:linear-gradient(120deg,#4a6cff,#7aa0ff);padding:6px 12px;border-radius:999px}
  .sec-pill.cat-rep{background:linear-gradient(120deg,#b85c5c,#e88a8a)}
  .sec-pill-rx{font-size:10.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--ink);background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);padding:6px 11px;border-radius:999px;backdrop-filter:blur(6px)}
  .sec-toggle-eyebrow{font-size:10px;letter-spacing:.26em;text-transform:uppercase;color:rgba(255,255,255,.62);margin-bottom:8px}
  .sec-toggle-label{font-family:'Oswald',sans-serif;font-weight:600;text-transform:uppercase;letter-spacing:.01em;font-size:clamp(26px,4.4vw,46px);line-height:.96;color:#fff;text-shadow:0 2px 30px rgba(0,0,0,.5);max-width:70%}
  /* circular arrow button bottom-right */
  .sec-toggle-ic{position:absolute;right:clamp(20px,5vw,64px);bottom:clamp(20px,3.4vw,40px);z-index:3;width:clamp(46px,5vw,60px);height:clamp(46px,5vw,60px);border-radius:50%;background:#fff;display:flex;align-items:center;justify-content:center;transition:transform .5s cubic-bezier(.4,1.3,.5,1),background .3s}
  .sec-toggle-ic svg{width:42%;height:42%;stroke:#0a0a0c;stroke-width:2.4;fill:none;stroke-linecap:round;stroke-linejoin:round;transition:transform .5s}
  .sec-toggle:hover .sec-toggle-ic{transform:scale(1.08)}
  .sec-collapse.open .sec-toggle-ic{background:var(--iris)}
  .sec-collapse.open .sec-toggle-ic svg{transform:rotate(90deg)}
  .sec-collapse-body{overflow:hidden;max-height:0;transition:max-height .55s ease}
  .sec-collapse.open .sec-collapse-body{border-top:1px solid var(--line)}
  .sec-collapse-body > *{padding-top:64px;padding-bottom:64px}
  .sec-collapse-eyebrow{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--iris);opacity:.8;margin-right:14px}
  .comp .comp-ruo{margin-top:12px;font-size:10px;letter-spacing:.05em;line-height:1.45;color:var(--ink-dim);opacity:.75;text-transform:uppercase}

  /* ---------- catalog filter ---------- */
  .filters{display:flex;flex-wrap:wrap;gap:10px;margin:36px 0 8px}
  .filt{font-family:'Inter',sans-serif;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-dim);background:rgba(255,255,255,.03);border:1px solid var(--line-2);border-radius:999px;padding:9px 18px;cursor:pointer;transition:color .25s,border-color .25s,background .25s}
  .filt:hover{color:var(--ink)}
  .filt.active{color:var(--ink);border-color:var(--iris);background:rgba(159,212,232,.08)}
  .comp.hide{display:none}
  .comp .comp-research{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:16px;padding:11px;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--iris);background:rgba(159,212,232,.06);border:1px solid rgba(159,212,232,.28);border-radius:3px;text-decoration:none;transition:background .25s,border-color .25s}
  .comp-more{margin-top:6px;color:var(--iris);opacity:.85}
  .comp-more:hover{opacity:1}
  .comp .comp-research:hover{background:rgba(159,212,232,.14);border-color:rgba(159,212,232,.55)}
  .comp .comp-research svg{width:14px;height:14px}
  .comp .comp-cta{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:18px;padding:12px;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:#dffbe9;background:rgba(37,211,102,.12);border:1px solid rgba(37,211,102,.4);border-radius:3px;text-decoration:none;transition:background .25s,border-color .25s}
  .comp .comp-cta:hover{background:rgba(37,211,102,.22);border-color:rgba(37,211,102,.7)}
  .comp .comp-cta svg{width:14px;height:14px;fill:currentColor}

  /* ---------- stacks ---------- */
  .stacks{padding:100px 0}
  .stack-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:48px}
  .stack{position:relative;border:1px solid var(--line);border-radius:4px;padding:30px 26px;background:linear-gradient(155deg,rgba(159,212,232,.05),rgba(255,255,255,0));overflow:hidden;display:flex;flex-direction:column;transition:transform .35s,border-color .35s}
  .stack::after{content:"";position:absolute;bottom:-40%;left:-20%;width:70%;height:80%;background:radial-gradient(circle,rgba(159,212,232,.12),transparent 70%);opacity:0;transition:opacity .4s}
  @media (hover:hover){.stack:hover{transform:translateY(-4px);border-color:rgba(159,212,232,.35)}.stack:hover::after{opacity:1}}
  .stack .s-tag{font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--iris);opacity:.85;margin-bottom:14px}
  .stack .s-name{font-family:'Oswald',sans-serif;text-transform:uppercase;font-size:24px;letter-spacing:.02em;margin-bottom:6px;line-height:1.05}
  .stack .s-desc{font-size:13px;color:var(--ink-dim);line-height:1.6;margin-bottom:18px}
  .stack .s-items{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:22px}
  .stack .chip{font-size:11px;letter-spacing:.06em;color:var(--ink);background:rgba(255,255,255,.05);border:1px solid var(--line-2);border-radius:999px;padding:5px 12px}
  .stack .comp-cta{margin-top:auto;display:inline-flex;align-items:center;gap:7px;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--iris);text-decoration:none;opacity:.9}
  .stack .comp-cta svg{width:13px;height:13px;fill:currentColor}

  /* ---------- whatsapp ---------- */
  .btn.wa{background:rgba(37,211,102,.10);color:#dffbe9}
  .btn.wa::before{background:linear-gradient(150deg,#25d366,#0b6b34)}
  .btn.wa svg{width:15px;height:15px;fill:currentColor;vertical-align:-2px;margin-right:8px}
  
  
  
  
  @media (hover:hover){}
  @keyframes wapulse{0%{box-shadow:0 8px 28px rgba(0,0,0,.5),0 0 0 0 rgba(37,211,102,.45)}70%{box-shadow:0 8px 28px rgba(0,0,0,.5),0 0 0 16px rgba(37,211,102,0)}100%{box-shadow:0 8px 28px rgba(0,0,0,.5),0 0 0 0 rgba(37,211,102,0)}}

  /* ---------- evidence callout ---------- */
  .evidence{padding:100px 0}
  .ev-card{border:1px solid var(--line);border-radius:4px;background:linear-gradient(150deg,rgba(159,212,232,.06),rgba(255,255,255,.01));padding:clamp(34px,6vw,64px);display:flex;flex-direction:column;align-items:flex-start;gap:24px;position:relative;overflow:hidden}
  .ev-card::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse 50% 90% at 90% 10%,rgba(159,212,232,.12),transparent 60%);pointer-events:none}
  .ev-card .sec-title{margin-bottom:6px}

  /* ---------- faq ---------- */
  .faq{padding:100px 0}
  .acc{max-width:760px;margin:40px auto 0;border:1px solid var(--line);border-radius:12px;background:linear-gradient(160deg,rgba(255,255,255,.03),rgba(255,255,255,0)),rgba(9,9,11,.92);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);padding:8px 24px}
  .qa{border-bottom:1px solid var(--line-2)}
  .qa button{width:100%;background:none;border:0;cursor:pointer;color:var(--ink);text-align:left;display:flex;justify-content:space-between;align-items:center;gap:18px;padding:24px 4px;font-family:'Inter',sans-serif;font-size:15.5px;font-weight:500;letter-spacing:.01em}
  .qa .ic{flex:0 0 auto;width:18px;height:18px;position:relative;transition:transform .35s}
  .qa .ic::before,.qa .ic::after{content:"";position:absolute;background:var(--iris);border-radius:2px}
  .qa .ic::before{top:8px;left:0;width:18px;height:2px}
  .qa .ic::after{left:8px;top:0;width:2px;height:18px;transition:opacity .3s}
  .qa.open .ic{transform:rotate(180deg)}
  .qa.open .ic::after{opacity:0}
  .qa .ans{max-height:0;overflow:hidden;transition:max-height .4s ease}
  .qa .ans p{padding:0 4px 24px;color:var(--ink-dim);font-size:14.5px;line-height:1.7;max-width:660px}

  /* ---------- contact / final cta ---------- */
  .final{padding:110px 0 120px;text-align:center}
  .final .sec-title{margin:0 auto 18px}
  .final .sec-lead{margin:0 auto 38px}
  .final .cta-row{margin:0 auto;animation:none;opacity:1}

  /* ---------- science / research ---------- */
  .science{padding:100px 0}
  .sci-grid{display:flex;flex-direction:column;gap:16px;margin-top:48px}
  .sci-item{border:1px solid var(--line);border-radius:6px;background:linear-gradient(160deg,rgba(255,255,255,.035),rgba(255,255,255,0)),rgba(9,9,11,.92);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);overflow:hidden;scroll-margin-top:90px}
  .sci-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 24px;cursor:pointer;transition:background .25s}
  .sci-head:hover{background:rgba(159,212,232,.04)}
  .sci-head .sci-name{font-family:'Oswald',sans-serif;text-transform:uppercase;font-size:20px;letter-spacing:.03em}
  .sci-head .sci-meta{display:flex;align-items:center;gap:14px}
  .sci-count{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--iris);opacity:.85;white-space:nowrap}
  .sci-head .ic{flex:0 0 auto;width:16px;height:16px;position:relative;transition:transform .35s}
  .sci-head .ic::before,.sci-head .ic::after{content:"";position:absolute;background:var(--iris);border-radius:2px}
  .sci-head .ic::before{top:7px;left:0;width:16px;height:2px}
  .sci-head .ic::after{left:7px;top:0;width:2px;height:16px;transition:opacity .3s}
  .sci-item.open .sci-head .ic{transform:rotate(180deg)}
  .sci-item.open .sci-head .ic::after{opacity:0}
  .sci-body{max-height:0;overflow:hidden;transition:max-height .45s ease}
  .sci-inner{padding:0 24px 8px}
  .study{border-top:1px solid var(--line-2);padding:18px 0;display:flex;flex-direction:column;gap:7px}
  .study .s-tipo{font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-dim)}
  .study .s-title{font-size:14.5px;line-height:1.45;color:var(--ink);font-weight:500}
  .study .s-src{font-size:12px;color:var(--ink-dim)}
  .study .s-sum{font-size:13.5px;line-height:1.6;color:var(--ink-dim);margin-top:2px}
  .study a.s-link{display:inline-flex;align-items:center;gap:7px;margin-top:6px;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--iris);text-decoration:none;width:fit-content}
  .study a.s-link:hover{text-decoration:underline}
  .study a.s-link::after{content:"\2197";font-size:13px}
  .sci-note{font-size:12px;color:var(--ink-dim);line-height:1.6;border-top:1px solid var(--line-2);padding:16px 0 4px}
  .sci-disclaimer{margin-top:34px;font-size:11.5px;line-height:1.6;color:var(--ink-dim);max-width:760px;border-left:2px solid var(--line);padding-left:16px}

  /* ---------- partner program ---------- */
  .partner{padding:110px 0 120px}
  .partner-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
  .partner-intro .sec-title{margin-bottom:18px}
  .partner-intro .sec-lead{margin-bottom:30px}
  .commission{display:inline-flex;align-items:center;gap:14px;border:1px solid rgba(159,212,232,.35);border-radius:6px;padding:18px 24px;background:linear-gradient(150deg,rgba(159,212,232,.10),rgba(255,255,255,.01));margin-bottom:30px}
  .commission .big{font-family:'Oswald',sans-serif;font-weight:700;font-size:46px;line-height:1;background:linear-gradient(105deg,#ffffff,#9fd4e8 60%,#f4f6fa);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
  .commission .lbl{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-dim);text-align:left;max-width:160px;line-height:1.4}
  .who{display:flex;flex-direction:column;gap:14px;margin-top:6px}
  .who li{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--ink-dim);line-height:1.5}
  .who li::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:7px;border-radius:50%;background:var(--iris);box-shadow:0 0 8px rgba(159,212,232,.6)}
  .who li b{color:var(--ink);font-weight:600}

  .partner-form{border:1px solid var(--line);border-radius:8px;background:linear-gradient(160deg,rgba(255,255,255,.035),rgba(255,255,255,0));padding:clamp(26px,4vw,40px)}
  .partner-form h3{font-family:'Oswald',sans-serif;text-transform:uppercase;font-size:20px;letter-spacing:.04em;margin-bottom:6px}
  .partner-form .fh{font-size:13px;color:var(--ink-dim);margin-bottom:26px;line-height:1.5}
  .field{margin-bottom:18px;text-align:left}
  .field label{display:block;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-dim);margin-bottom:9px}
  .field input,.field textarea,.field select{width:100%;background:rgba(0,0,0,.35);border:1px solid var(--line);border-radius:4px;color:var(--ink);font-family:'Inter',sans-serif;font-size:14px;padding:13px 14px;transition:border-color .25s,box-shadow .25s}
  .field input::placeholder,.field textarea::placeholder{color:rgba(138,138,144,.7)}
  .field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--iris);box-shadow:0 0 0 3px rgba(159,212,232,.12)}
  .field textarea{resize:vertical;min-height:84px}
  .field select{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%238a8a90' d='M6 8 0 0h12z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px}
  .field select option{background:#111113;color:var(--ink)}
  .role-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
  .role-opt{position:relative}
  .role-opt input{position:absolute;opacity:0;pointer-events:none}
  .role-opt label{display:flex;align-items:center;justify-content:center;text-align:center;gap:8px;border:1px solid var(--line);border-radius:4px;padding:13px 10px;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-dim);cursor:pointer;margin:0;transition:all .2s;min-height:46px}
  .role-opt input:checked + label{border-color:var(--iris);background:rgba(159,212,232,.1);color:var(--ink)}
  .form-submit{width:100%;margin-top:8px;display:flex;align-items:center;justify-content:center;gap:9px;padding:16px;font-family:'Inter',sans-serif;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:#dffbe9;background:rgba(37,211,102,.14);border:1px solid rgba(37,211,102,.5);border-radius:4px;cursor:pointer;transition:background .25s,border-color .25s}
  .form-submit:hover{background:rgba(37,211,102,.26);border-color:rgba(37,211,102,.8)}
  .form-submit svg{width:16px;height:16px;fill:currentColor}
  .form-note{font-size:11px;color:var(--ink-dim);margin-top:14px;text-align:center;line-height:1.5}
  .field-err{border-color:rgba(255,120,120,.6)!important}
  @media (max-width:860px){.partner-grid{grid-template-columns:1fr;gap:36px}}

  /* ---------- footer ---------- */
  footer{border-top:1px solid var(--line-2);padding:54px 26px calc(40px + env(safe-area-inset-bottom));background:rgba(0,0,0,.4)}
  .foot-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
  .foot-brand img{height:30px;margin-bottom:18px}
  .foot-brand p{color:var(--ink-dim);font-size:12.5px;line-height:1.7;max-width:300px}
  .foot-col h5{font-family:'Oswald',sans-serif;text-transform:uppercase;font-size:12px;letter-spacing:.18em;color:var(--ink);margin-bottom:18px}
  .foot-col a{display:block;color:var(--ink-dim);text-decoration:none;font-size:13px;margin-bottom:12px;transition:color .25s}
  .foot-col a:hover{color:var(--ink)}
  .foot-bottom{max-width:1100px;margin:46px auto 0;padding-top:24px;border-top:1px solid var(--line-2);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-dim)}

  /* ---------- responsive ---------- */
  @media (max-width:860px){
    .stats-grid{grid-template-columns:repeat(2,1fr);gap:40px 30px}
    .steps{grid-template-columns:repeat(2,1fr)}
    .comp-grid{grid-template-columns:1fr 1fr}
    .stack-grid{grid-template-columns:1fr}
    .foot-grid{grid-template-columns:1fr 1fr}
  }
  @media (max-width:680px){
    .nav-links{display:none}
    .menu-btn{display:block}
    .strip{grid-template-columns:1fr;gap:38px;padding:64px 26px}
    .cell{border-left:none;padding:0}
    .comp-grid{grid-template-columns:1fr}
    .stack-grid{grid-template-columns:1fr}
    .foot-grid{grid-template-columns:1fr;gap:34px}
    .process,.compounds,.evidence,.faq,.stacks{padding:74px 0}
    .final{padding:84px 0 96px}
  }
  @media (max-width:420px){
    .stats-grid{grid-template-columns:1fr 1fr}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important}
    .reveal{opacity:1!important;transform:none!important}
    h1{-webkit-text-fill-color:transparent}
  }

  /* ============ CART + CHECKOUT ============ */
  .comp-cta{cursor:pointer;border:none;width:100%;font-family:'Inter',sans-serif}
  .comp-cta.added{background:rgba(127,217,154,.18);color:#a9e0b8}
  /* floating cart button */
  .cart-fab{position:fixed;right:22px;bottom:22px;z-index:90;display:flex;align-items:center;gap:10px;padding:14px 20px;border-radius:999px;background:var(--iris);color:#06222c;border:none;cursor:pointer;font-family:'Inter',sans-serif;font-weight:600;font-size:13px;letter-spacing:.04em;box-shadow:0 10px 34px -8px rgba(159,212,232,.5);transform:translateY(120px);opacity:0;transition:transform .45s cubic-bezier(.4,1.2,.5,1),opacity .35s}
  .cart-fab.show{transform:translateY(0);opacity:1}
  .cart-fab svg{width:20px;height:20px;fill:none;stroke:#06222c;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
  .cart-fab .cart-count{background:#06222c;color:var(--iris);min-width:22px;height:22px;border-radius:999px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;padding:0 6px}
  /* checkout overlay + panel */
  .co-overlay{position:fixed;inset:0;z-index:200;background:rgba(3,4,5,.75);backdrop-filter:blur(8px);opacity:0;pointer-events:none;transition:opacity .35s}
  .co-overlay.open{opacity:1;pointer-events:auto}
  .co-panel{position:fixed;top:0;right:0;bottom:0;z-index:201;width:min(460px,100%);background:linear-gradient(180deg,#0b0c0f,#070809);border-left:1px solid var(--line-2);display:flex;flex-direction:column;transform:translateX(100%);transition:transform .42s cubic-bezier(.4,1,.3,1);box-shadow:-30px 0 60px -20px rgba(0,0,0,.7)}
  .co-panel.open{transform:translateX(0)}
  .co-head{display:flex;align-items:center;justify-content:space-between;padding:22px 24px;border-bottom:1px solid var(--line)}
  .co-head h3{margin:0;font-family:'Oswald',sans-serif;font-weight:600;text-transform:uppercase;letter-spacing:.03em;font-size:18px;color:var(--ink)}
  .co-close{background:none;border:none;color:var(--ink-dim);cursor:pointer;width:34px;height:34px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:22px;transition:background .2s,color .2s}
  .co-close:hover{background:rgba(255,255,255,.06);color:var(--ink)}
  .co-body{flex:1;overflow-y:auto;padding:20px 24px}
  .co-empty{text-align:center;color:var(--ink-faint);padding:60px 20px;font-size:14px}
  /* cart line items */
  .co-item{display:flex;gap:14px;align-items:center;padding:14px 0;border-bottom:1px solid var(--line)}
  .co-item-img{width:54px;height:54px;border-radius:10px;object-fit:cover;background:#111;flex:0 0 auto}
  .co-item-info{flex:1;min-width:0}
  .co-item-name{font-family:'Oswald',sans-serif;font-weight:600;text-transform:uppercase;letter-spacing:.01em;font-size:14px;color:var(--ink);line-height:1.1}
  .co-item-cat{font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint);margin-top:3px}
  .co-qty{display:flex;align-items:center;gap:0;border:1px solid var(--line-2);border-radius:8px;overflow:hidden;flex:0 0 auto}
  /* per-mg pricing in cart */
  .co-item{align-items:flex-start}
  .co-item-right{display:flex;flex-direction:column;align-items:flex-end;gap:8px;flex:0 0 auto}
  .co-mg{display:flex;align-items:center;gap:7px;margin:7px 0 2px}
  .co-mg label{font-size:12px;color:var(--ink-dim);font-weight:600}
  .co-mg-input{width:62px;padding:5px 8px;font-size:13px;font-weight:600;color:var(--ink);background:var(--bg-2);border:1px solid var(--line-2);border-radius:7px;text-align:center;-moz-appearance:textfield}
  .co-mg-input:focus{outline:none;border-color:var(--iris)}
  .co-mg-input::-webkit-outer-spin-button,.co-mg-input::-webkit-inner-spin-button{opacity:1;height:20px}
  .co-mg-rate{font-size:11px;color:var(--iris);letter-spacing:.02em}
  .co-line-price{font-size:14px;font-weight:700;color:var(--ink);font-family:'Oswald',sans-serif;letter-spacing:.01em;white-space:nowrap}
  .co-line-coord{font-size:11px;font-weight:500;color:var(--ink-faint);font-family:inherit;letter-spacing:.04em;text-transform:none}
  .co-qty button{width:30px;height:30px;background:var(--panel-2);border:none;color:var(--ink);cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;transition:background .2s}
  .co-qty button:hover{background:#1a1e24}
  .co-qty span{min-width:34px;text-align:center;font-size:14px;font-weight:600;color:var(--ink)}
  .co-item-rm{background:none;border:none;color:var(--ink-faint);cursor:pointer;font-size:12px;padding:4px;transition:color .2s;flex:0 0 auto}
  .co-item-rm:hover{color:#e8a0a0}
  /* customer form */
  .co-form{margin-top:22px}
  .co-form h4{font-family:'Oswald',sans-serif;font-weight:600;text-transform:uppercase;letter-spacing:.04em;font-size:13px;color:var(--ink-dim);margin:0 0 14px}
  .co-field{margin-bottom:14px}
  .co-field label{display:block;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:6px}
  .co-field input,.co-field textarea{width:100%;background:var(--panel-2);border:1px solid var(--line-2);border-radius:9px;color:var(--ink);font-family:'Inter',sans-serif;font-size:14px;padding:12px 14px;transition:border-color .2s}
  .co-field input:focus,.co-field textarea:focus{outline:none;border-color:var(--iris)}
  .co-field input::placeholder,.co-field textarea::placeholder{color:var(--ink-faint)}
  .co-field textarea{resize:vertical;min-height:64px}
  .co-field.req label::after{content:" *";color:var(--iris)}
  .co-ref-note{font-size:11px;color:var(--ink-faint);margin-top:6px;line-height:1.4}
  /* footer / send */
  .co-foot{padding:18px 24px;border-top:1px solid var(--line);background:rgba(8,9,11,.6)}
  .co-summary{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:14px;font-size:13px;color:var(--ink-dim)}
  /* discount breakdown */
  .co-breakdown{padding:14px 0 4px;border-top:1px solid var(--line-2);margin-bottom:6px}
  .co-bd-row{display:flex;justify-content:space-between;font-size:13px;color:var(--ink-dim);padding:3px 0}
  .co-bd-disc{color:#7fd99a}
  .co-bd-total{color:var(--ink);font-weight:600;border-top:1px solid var(--line-2);margin-top:6px;padding-top:8px}
  .co-bd-note{font-size:11px;color:var(--ink-faint);font-style:italic;padding:2px 0}
  .co-summary b{color:var(--ink);font-size:15px;font-family:'Oswald',sans-serif;letter-spacing:.02em}
  .co-send{width:100%;display:flex;align-items:center;justify-content:center;gap:10px;padding:16px;border-radius:11px;background:#25d366;color:#06251a;border:none;cursor:pointer;font-family:'Inter',sans-serif;font-weight:700;font-size:14px;letter-spacing:.03em;transition:background .25s,transform .1s}
  .co-send:hover{background:#2ee577}
  .co-send:active{transform:translateY(1px)}
  .co-send:disabled{background:#1a2a20;color:#52635a;cursor:not-allowed}
  .co-send svg{width:20px;height:20px;fill:currentColor}
  .co-disclaimer{font-size:10px;color:var(--ink-faint);text-align:center;margin-top:12px;line-height:1.4;text-transform:uppercase;letter-spacing:.05em}
  /* doctor visit add-on */
  .co-addons-wrap{margin-top:22px}
  .co-addons-h{font-family:'Oswald',sans-serif;font-weight:600;text-transform:uppercase;letter-spacing:.04em;font-size:13px;color:var(--ink-dim);margin:0 0 12px}
  .co-addons-wrap .co-addon{margin-top:10px}
  .co-addons-wrap .co-addon:first-of-type{margin-top:0}
  .co-addon{margin-top:20px;border:1px solid var(--line-2);border-radius:12px;padding:16px;background:linear-gradient(160deg,rgba(159,212,232,.06),rgba(159,212,232,.01));cursor:pointer;display:flex;align-items:flex-start;gap:13px;transition:border-color .25s,background .25s}
  .co-addon:hover{border-color:rgba(159,212,232,.4)}
  .co-addon.on{border-color:var(--iris);background:linear-gradient(160deg,rgba(159,212,232,.12),rgba(159,212,232,.03))}
  .co-addon-check{flex:0 0 auto;width:22px;height:22px;border-radius:6px;border:2px solid var(--line-2);display:flex;align-items:center;justify-content:center;margin-top:1px;transition:border-color .2s,background .2s}
  .co-addon.on .co-addon-check{border-color:var(--iris);background:var(--iris)}
  .co-addon-check svg{width:13px;height:13px;stroke:#06222c;stroke-width:3.5;fill:none;stroke-linecap:round;stroke-linejoin:round;opacity:0;transition:opacity .2s}
  .co-addon.on .co-addon-check svg{opacity:1}
  .co-addon-body{flex:1;min-width:0}
  .co-addon-title{display:flex;align-items:center;justify-content:space-between;gap:10px}
  .co-addon-title b{font-family:'Oswald',sans-serif;font-weight:600;text-transform:uppercase;letter-spacing:.01em;font-size:14px;color:var(--ink)}
  .co-addon-price{font-family:'Oswald',sans-serif;font-weight:600;font-size:15px;color:var(--iris);white-space:nowrap}
  .co-addon-desc{font-size:11.5px;line-height:1.45;color:var(--ink-dim);margin-top:5px}
  .co-summary .co-sum-sub{font-size:11px;color:var(--ink-faint);display:block;margin-top:2px;font-family:'Inter',sans-serif;letter-spacing:.02em;text-transform:none}
  @media(max-width:520px){.cart-fab{right:16px;bottom:16px;padding:12px 18px}}

  /* ============ PRIMERA VEZ / HOW TO BUY ============ */
  .howto{padding:40px 0 72px;position:relative}
  .howto .wrap{max-width:1180px;margin:0 auto;padding:0 clamp(20px,5vw,64px)}
  .howto-head{text-align:center;max-width:640px;margin:0 auto 56px}
  .howto-eyebrow{font-size:11px;letter-spacing:.26em;text-transform:uppercase;color:var(--iris);opacity:.85;margin-bottom:16px}
  .howto-title{font-family:'Oswald',sans-serif;font-weight:600;text-transform:uppercase;font-size:clamp(28px,4.8vw,48px);line-height:1.02;letter-spacing:.01em;color:var(--ink);margin:0 0 16px}
  .howto-sub{font-size:14.5px;line-height:1.6;color:var(--ink-dim)}
  .howto-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(16px,2.4vw,32px);position:relative}
  .howto-step{position:relative;padding:34px 28px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(165deg,var(--panel),#070809);text-align:center;transition:transform .35s,border-color .35s}
  .howto-step:hover{transform:translateY(-4px);border-color:rgba(159,212,232,.35)}
  .howto-icon{width:60px;height:60px;margin:0 auto 22px;border-radius:50%;background:radial-gradient(circle at 30% 30%,rgba(159,212,232,.18),rgba(159,212,232,.04));border:1px solid rgba(159,212,232,.3);display:flex;align-items:center;justify-content:center}
  .howto-icon svg{width:28px;height:28px;stroke:var(--iris);stroke-width:1.6;fill:none;stroke-linecap:round;stroke-linejoin:round}
  .howto-step-num{position:absolute;top:18px;right:22px;font-family:'Oswald',sans-serif;font-size:13px;letter-spacing:.18em;color:var(--ink-faint)}
  .howto-step h3{font-family:'Oswald',sans-serif;font-weight:600;text-transform:uppercase;font-size:18px;letter-spacing:.03em;color:var(--ink);margin:0 0 12px}
  .howto-step p{font-size:13px;line-height:1.6;color:var(--ink-dim);margin:0}
  .howto-cta{text-align:center;margin-top:48px}
  .howto-cta-btn{display:inline-flex;align-items:center;gap:10px;padding:16px 32px;border-radius:11px;background:var(--iris);color:#06222c;border:none;cursor:pointer;font-family:'Inter',sans-serif;font-weight:600;font-size:14px;letter-spacing:.03em;text-decoration:none;transition:background .25s,transform .1s}
  .howto-cta-btn:hover{background:#b6e0f0;transform:translateY(-2px)}
  .howto-cta-btn svg{width:18px;height:18px;stroke:#06222c;stroke-width:2.2;fill:none;stroke-linecap:round;stroke-linejoin:round}
  @media(max-width:760px){
    .howto-steps{grid-template-columns:1fr;gap:16px}
    .howto{padding:64px 0 56px}
  }

  /* === button order: Agregar al pedido first === */
  .comp-cta{order:1}
  .comp-research{order:2}
  .comp-more{order:3}
  /* first button gets the top gap; subsequent buttons tighten */
  .comp-cta{margin-top:20px}
  .comp-research{margin-top:10px}
  

/* ===================================================================
   PER-PAGE BACKGROUNDS — unique color signature for each category page.
   Pure CSS (gradients + ambient orbs), no external images. Each page
   reuses the shared .bg-stage base + adds a themed accent orb.
   =================================================================== */

/* A third accent orb, injected via ::before so no markup changes needed */
.page-compuestos .bg-stage::before,
.page-ciencia .bg-stage::before,
.page-origen .bg-stage::before,
.page-proceso .bg-stage::before,
.page-evidencia .bg-stage::before,
.page-faq .bg-stage::before{
  content:"";position:absolute;border-radius:50%;filter:blur(80px);
  opacity:.4;mix-blend-mode:screen;pointer-events:none;
  width:55vw;height:55vw;top:20%;right:-8%;
  animation:fb 30s ease-in-out infinite alternate;
}

/* ---- COMPUESTOS: clinical iris/cyan ---- */
.page-compuestos .bg-stage{background:radial-gradient(130% 100% at 70% -10%,#12222a 0%,#0a1418 35%,#050506 72%)}
.page-compuestos .bg-stage::before{background:radial-gradient(circle at 50% 50%,rgba(159,212,232,.30),transparent 62%)}
.page-compuestos .orb.a{background:radial-gradient(circle at 40% 40%,rgba(159,212,232,.26),transparent 62%)}
.page-compuestos .orb.b{background:radial-gradient(circle at 50% 50%,rgba(120,180,220,.18),transparent 60%)}

/* ---- CIENCIA: deep scientific blue/indigo ---- */
.page-ciencia .bg-stage{background:radial-gradient(130% 100% at 30% -10%,#141a2e 0%,#0b0e1a 38%,#050506 74%)}
.page-ciencia .bg-stage::before{background:radial-gradient(circle at 50% 50%,rgba(120,140,240,.28),transparent 62%);top:10%;left:-6%;right:auto}
.page-ciencia .orb.a{background:radial-gradient(circle at 40% 40%,rgba(140,160,245,.24),transparent 62%)}
.page-ciencia .orb.b{background:radial-gradient(circle at 50% 50%,rgba(90,120,220,.18),transparent 60%)}

/* ---- ORIGEN: warm amber/gold, earthy ---- */
.page-origen .bg-stage{background:radial-gradient(130% 100% at 60% -10%,#2a2016 0%,#181209 38%,#050506 74%)}
.page-origen .bg-stage::before{background:radial-gradient(circle at 50% 50%,rgba(230,180,110,.24),transparent 62%)}
.page-origen .orb.a{background:radial-gradient(circle at 40% 40%,rgba(230,190,120,.20),transparent 62%)}
.page-origen .orb.b{background:radial-gradient(circle at 50% 50%,rgba(200,150,90,.16),transparent 60%)}

/* ---- PROCESO: technical teal/green ---- */
.page-proceso .bg-stage{background:radial-gradient(130% 100% at 40% -10%,#0f2622 0%,#08150f 38%,#050506 74%)}
.page-proceso .bg-stage::before{background:radial-gradient(circle at 50% 50%,rgba(110,220,180,.24),transparent 62%);top:15%;left:-5%;right:auto}
.page-proceso .orb.a{background:radial-gradient(circle at 40% 40%,rgba(120,225,185,.20),transparent 62%)}
.page-proceso .orb.b{background:radial-gradient(circle at 50% 50%,rgba(90,190,200,.16),transparent 60%)}

/* ---- EVIDENCIA: violet/purple, trust ---- */
.page-evidencia .bg-stage{background:radial-gradient(130% 100% at 65% -10%,#221630 0%,#140b1e 38%,#050506 74%)}
.page-evidencia .bg-stage::before{background:radial-gradient(circle at 50% 50%,rgba(185,140,235,.26),transparent 62%)}
.page-evidencia .orb.a{background:radial-gradient(circle at 40% 40%,rgba(190,150,235,.22),transparent 62%)}
.page-evidencia .orb.b{background:radial-gradient(circle at 50% 50%,rgba(150,110,215,.16),transparent 60%)}

/* ---- FAQ: calm slate/steel ---- */
.page-faq .bg-stage{background:radial-gradient(130% 100% at 50% -10%,#1a1e24 0%,#0e1116 38%,#050506 74%)}
.page-faq .bg-stage::before{background:radial-gradient(circle at 50% 50%,rgba(160,180,200,.20),transparent 62%)}
.page-faq .orb.a{background:radial-gradient(circle at 40% 40%,rgba(165,185,205,.18),transparent 62%)}
.page-faq .orb.b{background:radial-gradient(circle at 50% 50%,rgba(130,150,175,.14),transparent 60%)}

/* ===================================================================
   PER-PAGE BACKGROUND VIDEOS — full-bleed ambient loop behind content.
   Video fills the fixed .bg-stage; overlay keeps text readable.
   Each page's themed gradient (above) shows through as the video's
   fallback/tint, so the color signature stays consistent.
   =================================================================== */
.bg-vid{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;opacity:.9}
.bg-vid-overlay{position:absolute;inset:0;z-index:1;pointer-events:none;
  background:radial-gradient(130% 100% at 50% 20%,rgba(5,5,6,.45) 0%,rgba(5,5,6,.68) 55%,rgba(5,5,6,.9) 100%)}
/* orbs sit above the video as a subtle accent glow */
.bg-stage .orb{z-index:2}
/* on video pages, dial the ::before accent orb back so it doesn't fight the footage */
.page-compuestos .bg-stage::before,
.page-ciencia .bg-stage::before,
.page-origen .bg-stage::before,
.page-proceso .bg-stage::before,
.page-evidencia .bg-stage::before,
.page-faq .bg-stage::before{opacity:.18;z-index:2}
/* respect reduced-motion: hide video, fall back to the themed gradient */
@media (prefers-reduced-motion: reduce){
  .bg-vid{display:none}
}