/* ============================================================
   iMán — Biomagnetic Medicine · Liquid Glass (light / cream)
   ============================================================ */
:root{
  /* palette — drapeau argentin */
  --ink:#1D1D1F;
  --celeste:#74ACDF;
  --celeste-b:#3C84C9;     /* deepened for contrast on cream */
  --sky:#2E7FCB;
  --gold:#F6B40E;
  --gold-b:#D98A04;        /* deepened amber for light */

  /* light / cream base */
  --bg0:#FBF8F2;
  --bg1:#FFFFFF;
  --bg2:#F3EEE4;
  --text:#23262D;
  --muted:#6B6F78;
  --faint:#9A9AA2;
  --line:rgba(20,22,34,.10);

  /* liquid glass (on light) */
  --glass-bg:rgba(255,255,255,.55);
  --glass-bg-2:rgba(255,255,255,.78);
  --glass-bd:rgba(20,24,40,.08);
  --glass-hi:rgba(255,255,255,.9);
  --glass-sh:0 22px 50px -26px rgba(50,55,80,.28);
  --blur:20px;

  --r-sm:14px; --r:20px; --r-lg:28px; --r-xl:36px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --maxw:1240px;
  --pad:clamp(20px,5vw,64px);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,"SF Pro Display","Helvetica Neue",sans-serif;
  background:var(--bg0);color:var(--text);line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
  letter-spacing:-.011em;
}
/* atmospheric backdrop */
body::before{
  content:"";position:fixed;inset:0;z-index:-2;
  background:
    radial-gradient(64% 54% at 14% 6%, rgba(98,162,222,.30), transparent 72%),
    radial-gradient(46% 44% at 94% 14%, rgba(60,132,201,.16), transparent 70%),
    radial-gradient(52% 48% at 86% 84%, rgba(246,180,14,.10), transparent 70%),
    radial-gradient(120% 90% at 50% 0%, #FFFFFF 0, transparent 60%),
    linear-gradient(180deg,#EEF5FC 0%, #FAF8F3 48%, #E9EEF5 100%);
}
body::after{ /* soft cool vignette */
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(130% 100% at 50% 38%, transparent 62%, rgba(120,140,175,.11) 100%);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
::selection{background:rgba(116,172,223,.35)}

/* ---------- focus visibility (a11y) ---------- */
:focus-visible{outline:2px solid var(--celeste-b);outline-offset:3px;border-radius:6px}
:focus:not(:focus-visible){outline:none}

/* ---------- skip link ---------- */
.skip-link{position:fixed;left:50%;top:-60px;transform:translateX(-50%);z-index:10000;
  background:var(--celeste-b);color:#fff;font-weight:600;font-size:14px;
  padding:10px 18px;border-radius:0 0 12px 12px;transition:top .25s var(--ease)}
.skip-link:focus{top:0}

/* ---------- shared brand wordmark ---------- */
.idot{position:relative}
.idot::after{content:"";position:absolute;width:.15em;height:.15em;border-radius:50%;
  left:.085em;top:.205em;
  background:linear-gradient(90deg,var(--celeste-b) 0 50%,var(--gold-b) 50% 100%)}
.mark,.wordmark,.pre-word,.brand .mark{font-weight:600;letter-spacing:-.045em;display:inline-flex;align-items:baseline}
.acc{color:var(--celeste-b)}

/* ---------- glass primitive ---------- */
.glass{
  background:var(--glass-bg);
  -webkit-backdrop-filter:blur(var(--blur)) saturate(150%);
  backdrop-filter:blur(var(--blur)) saturate(150%);
  border:1px solid var(--glass-bd);
  border-radius:var(--r-lg);
  box-shadow:var(--glass-sh), inset 0 1px 0 var(--glass-hi);
  position:relative;
}
.glass::before{ /* specular top edge */
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(180deg,rgba(255,255,255,.10),transparent 28%);
  -webkit-mask:linear-gradient(#000,transparent 40%);mask:linear-gradient(#000,transparent 40%);
  opacity:.8;
}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:.5em;border-radius:980px;font-weight:550;
  font-size:clamp(15px,1.1vw,17px);padding:14px 26px;transition:transform .35s var(--ease),box-shadow .35s,background .3s;
  white-space:nowrap}
.btn:hover{will-change:transform}
.btn-cta{background:linear-gradient(180deg,var(--celeste-b),var(--sky));color:#fff;
  box-shadow:0 12px 28px -10px rgba(46,127,203,.55), inset 0 1px 0 rgba(255,255,255,.3)}
.btn-cta:hover{box-shadow:0 18px 40px -10px rgba(46,127,203,.7), inset 0 1px 0 rgba(255,255,255,.4)}
.btn-ghost{color:var(--text);border:1px solid var(--glass-bd);background:var(--glass-bg);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
.btn-ghost:hover{background:var(--glass-bg-2)}
.btn-ghost::after{content:"→";opacity:.7;transition:transform .3s var(--ease)}
.btn-ghost:hover::after{transform:translateX(4px)}

/* ============ PRELOADER ============ */
#preloader{position:fixed;inset:0;z-index:9999;background:var(--bg0);
  display:flex;align-items:center;justify-content:center;transition:opacity .8s ease,visibility .8s}
#preCanvas{position:absolute;inset:0;width:100%;height:100%}
.pre-word{position:relative;font-size:clamp(56px,9vw,120px);color:var(--text);opacity:0;
  transform:translateY(6px);letter-spacing:-.05em}
.pre-word .acc{color:var(--celeste-b)}
#preloader.done{opacity:0;visibility:hidden}

/* ============ NAV ============ */
#nav{position:fixed;top:0;left:0;right:0;z-index:900;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:14px var(--pad);transition:padding .4s var(--ease),background .4s,border-color .4s;
  border-bottom:1px solid transparent}
#nav.scrolled{background:rgba(255,255,255,.72);-webkit-backdrop-filter:blur(18px) saturate(160%);
  backdrop-filter:blur(18px) saturate(160%);border-bottom:1px solid var(--line);padding:10px var(--pad)}
.brand .mark{font-size:26px}
.nav-links{display:flex;gap:30px}
.nav-links a{font-size:15px;color:var(--muted);font-weight:450;transition:color .25s}
.nav-links a:hover{color:var(--text)}
.nav-right{display:flex;align-items:center;gap:18px}
.lang{display:flex;gap:2px;background:var(--glass-bg);border:1px solid var(--glass-bd);
  border-radius:980px;padding:3px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
.lang button{font-size:12.5px;font-weight:600;letter-spacing:.02em;color:var(--faint);
  padding:5px 11px;border-radius:980px;transition:.25s}
.lang button.on{color:#fff;background:linear-gradient(180deg,var(--celeste-b),var(--sky))}
.btn-cta.magnetic{padding:11px 22px;font-size:14.5px}
#burger{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--glass-bd);
  background:var(--glass-bg);flex-direction:column;align-items:center;justify-content:center;gap:5px}
#burger span{width:18px;height:2px;background:var(--text);border-radius:2px;transition:.3s}
body.menu-open #burger span:nth-child(1){transform:translateY(3.5px) rotate(45deg)}
body.menu-open #burger span:nth-child(2){transform:translateY(-3.5px) rotate(-45deg)}

/* ============ HERO ============ */
.hero{position:relative;min-height:100vh;min-height:100svh;display:flex;flex-direction:column;
  align-items:center;justify-content:center;text-align:center;padding:120px var(--pad) 80px;overflow:hidden}
#field{position:absolute;inset:0;width:100%;height:100%;z-index:1}
.hero-aura{position:absolute;left:50%;top:54%;transform:translate(-50%,-50%);
  width:min(900px,90vw);aspect-ratio:1.6/1;z-index:0;pointer-events:none;
  background:radial-gradient(closest-side, rgba(116,172,223,.18), transparent 70%);filter:blur(10px)}
.hero-inner{position:relative;z-index:5;max-width:880px}
.eyebrow{font-size:clamp(12px,1.1vw,15px);letter-spacing:.34em;text-transform:uppercase;
  color:var(--muted);font-weight:600;margin-bottom:26px}
.wordmark{font-size:clamp(86px,17vw,210px);line-height:.92;letter-spacing:-.05em}
.hero-sub{margin:30px auto 0;font-size:clamp(18px,2.1vw,25px);color:#4A4E57;font-weight:400;
  max-width:600px;line-height:1.5}
.hero-actions{margin-top:40px;display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* floating glass cards */
.float-card{position:absolute;z-index:6;display:flex;align-items:center;gap:14px;
  padding:16px 20px;border-radius:var(--r);min-width:210px}
.float-card .fc-k{font-size:15px;font-weight:600;letter-spacing:-.01em}
.float-card .fc-v{font-size:12.5px;color:var(--muted);margin-top:2px}
.fc-dot{width:12px;height:12px;border-radius:50%;flex:none;box-shadow:0 0 16px currentColor}
.fc-dot.gold{background:var(--gold-b);color:var(--gold)}
.fc-dot.celeste{background:var(--celeste-b);color:var(--celeste)}
.fc1{top:24%;left:max(4vw,calc(50% - 560px))}
.fc2{top:38%;right:max(4vw,calc(50% - 580px))}
.fc3{bottom:16%;left:max(7vw,calc(50% - 520px))}
.fc-mini-ring{position:relative;width:40px;height:40px;flex:none}
.fc-mini-ring svg{transform:rotate(-90deg)}
.fc-mini-ring .ring-bg{fill:none;stroke:rgba(20,24,40,.12);stroke-width:3}
.fc-mini-ring .ring-fg{fill:none;stroke:var(--celeste-b);stroke-width:3;stroke-linecap:round;
  stroke-dasharray:94;stroke-dashoffset:34}
.fc-mini-ring span{position:absolute;inset:0;display:grid;place-items:center;font-size:11px;font-weight:700;color:var(--celeste-b)}

.scroll-cue{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:6;
  display:flex;flex-direction:column;align-items:center;gap:9px;color:var(--faint);
  font-size:11px;letter-spacing:.22em;text-transform:uppercase}
.scroll-cue i{width:1px;height:30px;background:linear-gradient(var(--celeste-b),transparent);
  animation:cue 2s var(--ease) infinite}
@keyframes cue{0%{transform:scaleY(.3);opacity:0}40%{opacity:1}100%{transform:scaleY(1);opacity:0}}

/* ============ STATS ============ */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  max-width:var(--maxw);margin:0 auto;padding:40px var(--pad) 30px}
.stat{text-align:center}
.stat .num{font-size:clamp(38px,5vw,62px);font-weight:700;letter-spacing:-.04em;
  background:linear-gradient(180deg,#1D1D1F,var(--sky));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.stat .lab{font-size:14px;color:var(--muted);margin-top:4px}

/* ============ SECTIONS ============ */
.section{max-width:var(--maxw);margin:0 auto;padding:clamp(80px,11vw,150px) var(--pad)}
.sec-head{max-width:720px;margin-bottom:clamp(40px,6vw,72px)}
.sec-head.reveal{margin-left:0}
.tag{display:inline-block;font-size:12.5px;letter-spacing:.18em;text-transform:uppercase;
  font-weight:600;color:var(--celeste-b);margin-bottom:18px;
  padding:6px 14px;border:1px solid var(--glass-bd);border-radius:980px;background:var(--glass-bg)}
.section h2{font-size:clamp(30px,4.6vw,52px);font-weight:600;letter-spacing:-.03em;line-height:1.08}
.lede{font-size:clamp(16px,1.6vw,20px);color:var(--muted);margin-top:20px;line-height:1.6}

/* science */
.science-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.panel{padding:34px 30px}
.panel-ico{width:54px;height:54px;border-radius:16px;display:grid;place-items:center;color:var(--text);
  background:var(--glass-bg-2);border:1px solid var(--glass-bd);margin-bottom:22px}
.panel-ico svg{width:30px;height:30px}
.panel h3{font-size:21px;font-weight:600;letter-spacing:-.02em;margin-bottom:10px}
.panel p{font-size:15.5px;color:var(--muted)}

/* method */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.step{padding:30px 26px}
.step-n{font-size:14px;font-weight:700;color:var(--celeste-b);letter-spacing:.05em}
.step h3{font-size:19px;font-weight:600;margin:16px 0 8px;letter-spacing:-.02em}
.step p{font-size:14.5px;color:var(--muted)}

/* conditions */
.chips{display:flex;flex-wrap:wrap;gap:12px}
.chip{padding:12px 20px;border-radius:980px;font-size:15px;font-weight:450;color:#2C2F36;
  background:var(--glass-bg);border:1px solid var(--glass-bd);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  transition:transform .3s var(--ease),background .3s,border-color .3s}
.chip:hover{transform:translateY(-3px);background:var(--glass-bg-2);border-color:rgba(116,172,223,.45)}
.disclaimer{margin-top:34px;font-size:13.5px;color:var(--faint);font-style:italic}

/* why */
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feat{padding:30px 26px}
.feat-ico{font-size:20px;color:var(--gold-b);margin-bottom:18px}
.feat h3{font-size:19px;font-weight:600;letter-spacing:-.02em;margin-bottom:8px}
.feat p{font-size:14.5px;color:var(--muted)}

/* about */
.about-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:46px;align-items:center}
.about-card{padding:0;overflow:hidden;aspect-ratio:4/4.4;display:grid;place-items:center}
.portrait{width:100%;height:100%;display:grid;place-items:center;
  background:
    radial-gradient(80% 60% at 30% 20%, rgba(116,172,223,.32), transparent 70%),
    radial-gradient(70% 70% at 80% 90%, rgba(246,180,14,.22), transparent 70%),
    linear-gradient(160deg,#FFFFFF,#EFEAE0)}
.portrait span{font-size:clamp(48px,7vw,86px);font-weight:600;letter-spacing:-.05em;opacity:.9}
.portrait .acc{color:var(--celeste-b)}
.about-text h2{margin:16px 0 22px}
.about-text p{font-size:16.5px;color:#42454D;margin-bottom:16px}
.signature{margin-top:26px;font-size:24px;font-weight:600;letter-spacing:-.04em}
.signature em{font-size:15px;font-weight:400;color:var(--muted);font-style:normal;letter-spacing:0}

/* testimonials */
.tst-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.quote{padding:32px 30px;display:flex;flex-direction:column;gap:22px}
.quote blockquote{font-size:17.5px;line-height:1.55;color:#2E3138;letter-spacing:-.01em}
.quote figcaption{display:flex;flex-direction:column}
.quote figcaption b{font-size:15px;font-weight:600}
.quote figcaption span{font-size:13px;color:var(--muted)}

/* faq */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:880px}
.faq-item{border:1px solid var(--glass-bd);border-radius:var(--r);background:var(--glass-bg);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);overflow:hidden;transition:background .3s}
.faq-q{width:100%;text-align:left;display:flex;justify-content:space-between;align-items:center;gap:20px;
  padding:22px 26px;font-size:17px;font-weight:550;letter-spacing:-.01em}
.faq-q .pm{flex:none;width:22px;height:22px;position:relative;transition:transform .35s var(--ease)}
.faq-q .pm::before,.faq-q .pm::after{content:"";position:absolute;background:var(--celeste-b);border-radius:2px}
.faq-q .pm::before{left:50%;top:3px;width:2px;height:16px;transform:translateX(-50%)}
.faq-q .pm::after{top:50%;left:3px;height:2px;width:16px;transform:translateY(-50%)}
.faq-item.open .pm{transform:rotate(135deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s var(--ease)}
.faq-a p{padding:0 26px 24px;font-size:15.5px;color:var(--muted)}

/* contact */
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:40px;padding:clamp(34px,5vw,56px)}
.contact-left h2{margin:14px 0 16px;font-size:clamp(28px,3.6vw,42px)}
.contact-left p{color:var(--muted);font-size:16px}
.contact-info{list-style:none;margin-top:28px;display:flex;flex-direction:column;gap:12px}
.contact-info li{font-size:15.5px;color:#42454D;padding-left:20px;position:relative}
.contact-info li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;
  background:var(--celeste-b);box-shadow:0 0 12px var(--celeste-b)}
.contact-form{display:flex;flex-direction:column;gap:12px}
.contact-form input,.contact-form textarea{
  background:rgba(255,255,255,.7);border:1px solid var(--glass-bd);border-radius:var(--r-sm);
  padding:14px 16px;color:var(--text);font-size:15.5px;transition:border-color .25s,background .25s;resize:vertical}
.contact-form input::placeholder,.contact-form textarea::placeholder{color:var(--faint)}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--celeste-b);background:#fff}
.contact-form .btn-cta{justify-content:center;margin-top:6px}
.form-note{color:var(--celeste-b);font-size:14.5px;text-align:center;margin-top:4px}

/* ============ FOOTER ============ */
#footer{max-width:var(--maxw);margin:0 auto;padding:60px var(--pad) 48px;border-top:1px solid var(--line)}
.foot-top{display:flex;justify-content:space-between;align-items:flex-start;gap:30px;flex-wrap:wrap}
.foot-brand .mark{font-size:28px}
.foot-brand p{font-size:13.5px;color:var(--muted);margin-top:8px}
.foot-nav{display:flex;gap:26px;flex-wrap:wrap}
.foot-nav a{font-size:14.5px;color:var(--muted);transition:color .25s}
.foot-nav a:hover{color:var(--text)}
.foot-disc{font-size:12.5px;color:var(--faint);margin:36px 0 26px;max-width:760px;line-height:1.6}
.foot-bot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--faint);padding-top:22px;border-top:1px solid var(--line)}

/* ============ REVEAL ============ */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============ ASSISTANT / CHAT ============ */
.assistant .sec-head{max-width:680px}
.chat{max-width:760px;margin:0 auto;display:flex;flex-direction:column;overflow:hidden;padding:0}
.chat-head{display:flex;align-items:center;gap:14px;padding:20px 24px;border-bottom:1px solid var(--glass-bd);background:rgba(255,255,255,.5)}
.chat-ava{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;font-size:15px;font-weight:600;
  letter-spacing:-.05em;white-space:nowrap;background:linear-gradient(160deg,#2E5A8C,#1E3E66);border:1px solid rgba(255,255,255,.15)}
.chat-ava .acc{color:var(--celeste-b)}
.chat-id b{font-size:16px;font-weight:600;display:block;letter-spacing:-.01em}
.chat-status{display:flex;align-items:center;gap:7px;font-size:12.5px;color:var(--muted);margin-top:2px}
.chat-status i{width:7px;height:7px;border-radius:50%;background:#36D399;box-shadow:0 0 8px #36D399}
.chat-log{display:flex;flex-direction:column;gap:12px;padding:24px;min-height:230px;max-height:430px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:var(--glass-bd) transparent}
.chat-log::-webkit-scrollbar{width:8px}
.chat-log::-webkit-scrollbar-thumb{background:var(--glass-bd);border-radius:8px}
.msg{max-width:82%;padding:13px 17px;border-radius:18px;font-size:15px;line-height:1.5;animation:msgin .4s var(--ease);word-wrap:break-word}
@keyframes msgin{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.msg.bot{align-self:flex-start;background:var(--glass-bg-2);border:1px solid var(--glass-bd);border-bottom-left-radius:6px;color:#272A31}
.msg.user{align-self:flex-end;background:linear-gradient(180deg,var(--celeste-b),var(--sky));color:#fff;border-bottom-right-radius:6px;font-weight:450}
.msg.typing{display:flex;gap:5px;align-items:center;padding:15px 17px}
.msg.typing span{width:7px;height:7px;border-radius:50%;background:var(--muted);animation:typing 1.2s infinite}
.msg.typing span:nth-child(2){animation-delay:.18s}
.msg.typing span:nth-child(3){animation-delay:.36s}
@keyframes typing{0%,60%,100%{opacity:.3;transform:translateY(0)}30%{opacity:1;transform:translateY(-4px)}}
.chat-suggest{display:flex;flex-wrap:wrap;gap:8px;padding:2px 24px 16px}
.chat-chip{font-size:13.5px;color:#2C2F36;background:var(--glass-bg);border:1px solid var(--glass-bd);
  padding:9px 15px;border-radius:980px;cursor:pointer;transition:transform .25s var(--ease),background .25s,border-color .25s;text-align:left;line-height:1.3}
.chat-chip:hover{background:var(--glass-bg-2);border-color:rgba(116,172,223,.5);transform:translateY(-2px)}
.chat-input{display:flex;gap:10px;padding:16px 24px;border-top:1px solid var(--glass-bd);background:rgba(255,255,255,.45)}
.chat-input input{flex:1;background:rgba(255,255,255,.75);border:1px solid var(--glass-bd);border-radius:980px;
  padding:13px 18px;color:var(--text);font-size:15px}
.chat-input input::placeholder{color:var(--faint)}
.chat-input input:focus{outline:none;border-color:var(--celeste-b);box-shadow:0 0 0 3px rgba(116,172,223,.25)}
.chat-send{width:48px;height:48px;flex:none;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(180deg,var(--celeste-b),var(--sky));color:#fff;
  box-shadow:0 8px 22px -8px rgba(116,172,223,.7);transition:transform .35s var(--ease),box-shadow .35s}
.chat-send svg{width:20px;height:20px}
.chat-disc{font-size:12px;color:var(--faint);text-align:center;padding:14px 24px 18px;margin:0}

/* ============ RESPONSIVE ============ */
@media (max-width:1080px){
  .float-card{display:none}
  .stats{grid-template-columns:repeat(2,1fr);gap:30px 20px}
  .science-grid,.steps,.why-grid,.tst-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .nav-links{position:fixed;inset:0 0 auto 0;top:0;flex-direction:column;gap:6px;
    padding:90px 28px 32px;background:rgba(255,255,255,.95);
    -webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px);
    transform:translateY(-110%);transition:transform .45s var(--ease);border-bottom:1px solid var(--line)}
  body.menu-open .nav-links{transform:none}
  .nav-links a{font-size:22px;padding:10px 0;color:var(--text)}
  #burger{display:flex}
  .nav-right .btn-cta{display:none}
  #nav .lang{order:2;gap:4px}
  #nav .lang button{min-height:44px;padding:10px 15px;font-size:14px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .science-grid,.steps,.why-grid,.tst-grid{grid-template-columns:1fr}
  .about-wrap{grid-template-columns:1fr;gap:30px}
  .about-card{aspect-ratio:4/3;max-height:320px}
  .contact-wrap{grid-template-columns:1fr;gap:28px}
  .hero{padding-top:110px}
}

/* ============ REDUCED MOTION ============ */
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none;transition:none}
  .scroll-cue i{animation:none}
  .btn{transition:none}
  .msg,.msg.typing span{animation:none}
}