/* ============ SANAD LINK — Fable 5 Design System ============ */
:root{
  --bg:#04070f;
  --bg-2:#0a1120;
  --bg-3:#0e1830;
  --teal:#00e5c7;
  --teal-dim:rgba(0,229,199,.14);
  --blue:#3b82f6;
  --violet:#8b5cf6;
  --rose:#fb7185;
  --txt:#e8eef7;
  --muted:#8a94a8;
  --line:rgba(255,255,255,.07);
  --glass:rgba(255,255,255,.04);
  --rad:18px;
  --font-h:'Sora',sans-serif;
  --font-b:'Inter',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--txt);font-family:var(--font-b);
  overflow-x:hidden;line-height:1.65;
}
::selection{background:var(--teal);color:#021}
a{color:inherit;text-decoration:none}
img{max-width:100%}
h1,h2,h3,h4{font-family:var(--font-h);line-height:1.15;font-weight:700}

/* ---------- scrollbar ---------- */
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:linear-gradient(var(--teal),var(--blue));border-radius:8px}

/* ---------- preloader (heartbeat) ---------- */
#preloader{
  position:fixed;inset:0;background:var(--bg);z-index:9999;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;
  transition:opacity .6s ease,visibility .6s;
}
#preloader.done{opacity:0;visibility:hidden}
.pre-heart{width:220px;height:70px}
.pre-heart path{
  fill:none;stroke:var(--teal);stroke-width:2.5;stroke-linecap:round;
  stroke-dasharray:520;stroke-dashoffset:520;
  animation:ecgDraw 1.6s ease-in-out infinite;
  filter:drop-shadow(0 0 8px var(--teal));
}
@keyframes ecgDraw{0%{stroke-dashoffset:520}55%{stroke-dashoffset:0}100%{stroke-dashoffset:-520}}
.pre-word{font-family:var(--font-h);letter-spacing:.45em;font-size:.8rem;color:var(--muted);text-transform:uppercase;animation:fadePulse 1.6s infinite}
@keyframes fadePulse{0%,100%{opacity:.35}50%{opacity:1}}

/* ---------- scroll progress ---------- */
#scrollbar{position:fixed;top:0;left:0;height:3px;width:0;z-index:1001;
  background:linear-gradient(90deg,var(--teal),var(--blue),var(--violet));
  box-shadow:0 0 12px var(--teal)}

/* ---------- background canvas + orbs ---------- */
#particles{position:fixed;inset:0;z-index:0;pointer-events:none}
.orb{position:fixed;border-radius:50%;filter:blur(110px);opacity:.35;z-index:0;pointer-events:none;animation:orbFloat 18s ease-in-out infinite alternate}
.orb-a{width:480px;height:480px;background:#04434a;top:-140px;left:-120px}
.orb-b{width:420px;height:420px;background:#13235a;bottom:-160px;right:-100px;animation-delay:-6s}
.orb-c{width:300px;height:300px;background:#2a1a5e;top:42%;left:55%;animation-delay:-12s}
@keyframes orbFloat{from{transform:translate(0,0) scale(1)}to{transform:translate(70px,-50px) scale(1.15)}}

/* grid overlay */
.grid-overlay{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(120,160,255,.04) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(120,160,255,.04) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse at 50% 0%,#000 30%,transparent 75%);
}

main,header,footer{position:relative;z-index:1}

/* ---------- nav ---------- */
nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  display:flex;align-items:center;justify-content:space-between;
  padding:20px clamp(20px,5vw,64px);
  transition:.4s;
}
nav.scrolled{background:rgba(4,7,15,.78);backdrop-filter:blur(18px);border-bottom:1px solid var(--line);padding-top:12px;padding-bottom:12px}
.logo{display:flex;align-items:center;gap:11px;font-family:var(--font-h);font-weight:800;font-size:1.18rem;letter-spacing:.02em}
.logo .mark{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--teal),var(--blue));
  box-shadow:0 0 22px rgba(0,229,199,.45);position:relative;overflow:hidden}
.logo .mark::after{content:'';position:absolute;inset:0;background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.5) 50%,transparent 70%);transform:translateX(-100%);animation:shine 3.5s infinite}
@keyframes shine{0%,60%{transform:translateX(-100%)}100%{transform:translateX(100%)}}
.logo .mark svg{width:20px;height:20px}
.logo span b{color:var(--teal)}
.nav-links{display:flex;gap:34px;list-style:none}
.nav-links a{font-size:.92rem;color:var(--muted);position:relative;transition:.3s}
.nav-links a::after{content:'';position:absolute;left:0;bottom:-6px;height:2px;width:0;background:var(--teal);transition:.3s;border-radius:2px}
.nav-links a:hover,.nav-links a.active{color:var(--txt)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-cta{display:flex;align-items:center;gap:14px}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.burger span{width:24px;height:2px;background:var(--txt);transition:.3s;border-radius:2px}

/* mobile menu */
.mobile-menu{position:fixed;inset:0;background:rgba(4,7,15,.96);backdrop-filter:blur(20px);z-index:999;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:30px;
  clip-path:circle(0 at top right);transition:clip-path .6s cubic-bezier(.7,0,.3,1)}
.mobile-menu.open{clip-path:circle(150% at top right)}
.mobile-menu a{font-family:var(--font-h);font-size:1.6rem;font-weight:700}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 30px;border-radius:60px;font-weight:600;font-size:.95rem;
  border:0;cursor:pointer;position:relative;overflow:hidden;
  transition:transform .3s,box-shadow .3s;font-family:var(--font-b);
}
.btn-primary{background:linear-gradient(135deg,var(--teal),#0ea5e9);color:#01231d;box-shadow:0 8px 30px rgba(0,229,199,.35)}
.btn-primary:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 14px 42px rgba(0,229,199,.5)}
.btn-primary::before{content:'';position:absolute;inset:0;background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.45) 50%,transparent 70%);transform:translateX(-110%);transition:.6s}
.btn-primary:hover::before{transform:translateX(110%)}
.btn-ghost{background:var(--glass);color:var(--txt);border:1px solid var(--line);backdrop-filter:blur(8px)}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal);transform:translateY(-3px)}
.btn .pulse-dot{width:8px;height:8px;border-radius:50%;background:currentColor;position:relative}
.btn .pulse-dot::after{content:'';position:absolute;inset:-5px;border-radius:50%;border:2px solid currentColor;animation:ring 1.6s infinite}
@keyframes ring{from{transform:scale(.4);opacity:1}to{transform:scale(1.4);opacity:0}}

/* ---------- hero ---------- */
.hero{min-height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;
  padding:140px 24px 80px;position:relative}
.hero-badge{display:inline-flex;align-items:center;gap:10px;padding:9px 20px;border-radius:50px;
  background:var(--teal-dim);border:1px solid rgba(0,229,199,.3);color:var(--teal);
  font-size:.83rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;margin-bottom:30px}
.hero-badge .live{width:8px;height:8px;background:var(--teal);border-radius:50%;animation:blink 1.4s infinite}
@keyframes blink{0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(0,229,199,.7)}50%{opacity:.5;box-shadow:0 0 0 6px rgba(0,229,199,0)}}
.hero h1{font-size:clamp(2.4rem,6.4vw,4.6rem);max-width:1000px;letter-spacing:-.02em}
.grad-text{background:linear-gradient(92deg,var(--teal) 10%,var(--blue) 55%,var(--violet));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  background-size:200% 100%;animation:gradMove 6s linear infinite}
@keyframes gradMove{to{background-position:200% 0}}
.typed-wrap{display:inline-block;min-width:1ch;color:var(--teal);border-right:3px solid var(--teal);padding-right:6px;animation:caret .8s step-end infinite}
@keyframes caret{0%,100%{border-color:var(--teal)}50%{border-color:transparent}}
.hero p.lead{margin:26px auto 38px;max-width:640px;color:var(--muted);font-size:1.13rem}
.hero-actions{display:flex;gap:18px;flex-wrap:wrap;justify-content:center}

/* ECG strip */
.ecg-strip{width:min(880px,92vw);margin:64px auto 0;position:relative}
.ecg-strip svg{width:100%;height:90px;overflow:visible}
.ecg-path{fill:none;stroke:url(#ecgGrad);stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round;
  filter:drop-shadow(0 0 9px rgba(0,229,199,.8))}
.ecg-dot{filter:drop-shadow(0 0 10px var(--teal))}
.ecg-label{position:absolute;top:-14px;right:0;font-size:.7rem;letter-spacing:.3em;color:var(--muted);text-transform:uppercase}
.bpm{color:var(--teal);font-family:var(--font-h);font-weight:700}

/* scroll hint */
.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--muted);font-size:.72rem;letter-spacing:.25em;text-transform:uppercase}
.mouse{width:24px;height:38px;border:2px solid var(--muted);border-radius:14px;position:relative}
.mouse::after{content:'';position:absolute;top:7px;left:50%;width:4px;height:8px;margin-left:-2px;border-radius:4px;background:var(--teal);animation:wheel 1.6s infinite}
@keyframes wheel{0%{opacity:1;transform:translateY(0)}100%{opacity:0;transform:translateY(12px)}}

/* ---------- sections ---------- */
section{padding:110px clamp(20px,6vw,80px);max-width:1280px;margin:0 auto}
.sec-tag{display:inline-block;color:var(--teal);font-size:.8rem;font-weight:700;letter-spacing:.3em;text-transform:uppercase;margin-bottom:16px;position:relative;padding-left:42px}
.sec-tag::before{content:'';position:absolute;left:0;top:50%;width:30px;height:2px;background:linear-gradient(90deg,var(--teal),transparent)}
.sec-title{font-size:clamp(1.9rem,4vw,3rem);max-width:760px;margin-bottom:18px;letter-spacing:-.01em}
.sec-sub{color:var(--muted);max-width:620px;font-size:1.05rem}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:22px;margin-top:60px}
.stat{padding:34px 26px;border-radius:var(--rad);background:var(--glass);border:1px solid var(--line);text-align:center;position:relative;overflow:hidden;transition:.4s}
.stat:hover{transform:translateY(-6px);border-color:rgba(0,229,199,.4)}
.stat::after{content:'';position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,transparent,var(--teal),transparent);opacity:0;transition:.4s}
.stat:hover::after{opacity:1}
.stat .num{font-family:var(--font-h);font-size:2.6rem;font-weight:800;color:var(--teal)}
.stat .num sup{font-size:1.3rem;color:var(--blue)}
.stat .lbl{color:var(--muted);font-size:.9rem;margin-top:6px}

/* ---------- cards ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:26px;margin-top:64px}
.card{
  padding:38px 30px;border-radius:var(--rad);background:linear-gradient(160deg,var(--glass),rgba(255,255,255,.015));
  border:1px solid var(--line);position:relative;overflow:hidden;
  transition:transform .45s cubic-bezier(.2,.8,.2,1),border-color .45s,box-shadow .45s;
  transform-style:preserve-3d;
}
.card:hover{transform:translateY(-10px);border-color:rgba(0,229,199,.45);box-shadow:0 24px 60px rgba(0,0,0,.5),0 0 0 1px rgba(0,229,199,.15) inset}
.card .scan{position:absolute;left:0;right:0;top:-60%;height:60%;
  background:linear-gradient(180deg,transparent,rgba(0,229,199,.08),transparent);
  opacity:0;transition:.2s}
.card:hover .scan{opacity:1;animation:scan 1.6s linear infinite}
@keyframes scan{from{top:-60%}to{top:120%}}
.card .icon{width:58px;height:58px;border-radius:16px;display:grid;place-items:center;margin-bottom:24px;position:relative;
  background:linear-gradient(135deg,var(--teal-dim),rgba(59,130,246,.12));border:1px solid rgba(0,229,199,.25)}
.card .icon svg{width:27px;height:27px;stroke:var(--teal)}
.card .icon::after{content:'';position:absolute;inset:-7px;border-radius:20px;border:1px solid rgba(0,229,199,.35);opacity:0;transition:.4s}
.card:hover .icon::after{opacity:1;animation:ring 1.6s infinite}
.card h3{font-size:1.25rem;margin-bottom:12px}
.card p{color:var(--muted);font-size:.95rem}
.card .more{display:inline-flex;align-items:center;gap:8px;margin-top:20px;color:var(--teal);font-size:.88rem;font-weight:600;opacity:0;transform:translateX(-8px);transition:.35s}
.card:hover .more{opacity:1;transform:translateX(0)}

/* ---------- dna section ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.dna-stage{height:480px;display:flex;align-items:center;justify-content:center;perspective:900px;position:relative}
.dna{position:relative;width:140px;height:430px;animation:dnaSpin 14s linear infinite;transform-style:preserve-3d}
@keyframes dnaSpin{from{transform:rotateY(0)}to{transform:rotateY(360deg)}}
.dna .rung{position:absolute;left:0;right:0;height:2px;display:flex;justify-content:space-between;align-items:center;transform-style:preserve-3d}
.dna .rung::before{content:'';position:absolute;left:12px;right:12px;height:2px;background:linear-gradient(90deg,var(--teal),var(--violet));opacity:.7}
.dna .rung i{width:13px;height:13px;border-radius:50%;background:var(--teal);box-shadow:0 0 12px var(--teal);z-index:1}
.dna .rung i:last-child{background:var(--violet);box-shadow:0 0 12px var(--violet)}
.dna-glow{position:absolute;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(0,229,199,.16),transparent 70%);animation:fadePulse 3s infinite}
.checklist{list-style:none;margin-top:30px;display:grid;gap:16px}
.checklist li{display:flex;gap:14px;align-items:flex-start;color:#c6cfdd}
.checklist .chk{flex:0 0 26px;height:26px;border-radius:50%;display:grid;place-items:center;margin-top:2px;
  background:var(--teal-dim);border:1px solid rgba(0,229,199,.4);color:var(--teal);font-size:.8rem;font-weight:800}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:26px;margin-top:64px;counter-reset:step}
.step{position:relative;padding:40px 28px;border-radius:var(--rad);background:var(--glass);border:1px solid var(--line);transition:.4s}
.step:hover{transform:translateY(-8px);border-color:rgba(139,92,246,.5)}
.step::before{counter-increment:step;content:'0' counter(step);font-family:var(--font-h);font-size:3.4rem;font-weight:800;
  background:linear-gradient(180deg,rgba(0,229,199,.55),transparent);-webkit-background-clip:text;background-clip:text;color:transparent;display:block;margin-bottom:14px}
.step h3{font-size:1.15rem;margin-bottom:10px}
.step p{color:var(--muted);font-size:.93rem}
.step .lineflow{position:absolute;top:0;left:0;right:0;height:2px;overflow:hidden;border-radius:2px}
.step .lineflow::after{content:'';position:absolute;width:40%;height:100%;background:linear-gradient(90deg,transparent,var(--teal),transparent);animation:flow 2.6s linear infinite}
@keyframes flow{from{left:-40%}to{left:100%}}

/* ---------- marquee ---------- */
.marquee{overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:26px 0;background:rgba(255,255,255,.015)}
.marquee-track{display:flex;gap:60px;width:max-content;animation:scrollX 28s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-track span{font-family:var(--font-h);font-weight:700;font-size:1.15rem;color:rgba(232,238,247,.34);display:flex;align-items:center;gap:18px;white-space:nowrap}
.marquee-track span::after{content:'+';color:var(--teal);font-size:1.3rem}
@keyframes scrollX{to{transform:translateX(-50%)}}

/* ---------- vitals monitor card ---------- */
.monitor{border-radius:22px;border:1px solid var(--line);background:linear-gradient(160deg,#091224,#050a17);padding:30px;position:relative;overflow:hidden}
.monitor .mon-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;font-size:.8rem;color:var(--muted);letter-spacing:.18em;text-transform:uppercase}
.mon-vitals{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}
.vital{background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:12px;padding:14px;text-align:center}
.vital b{display:block;font-family:var(--font-h);font-size:1.45rem;color:var(--teal)}
.vital.v2 b{color:var(--blue)}.vital.v3 b{color:var(--violet)}
.vital small{color:var(--muted);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase}

/* ---------- big cta ---------- */
.cta-band{margin:40px auto 0;max-width:1100px;text-align:center;padding:90px 30px;border-radius:30px;position:relative;overflow:hidden;
  background:radial-gradient(120% 160% at 50% -20%,rgba(0,229,199,.16),transparent 55%),linear-gradient(160deg,#0a1424,#070d1c);
  border:1px solid rgba(0,229,199,.22)}
.cta-band h2{font-size:clamp(1.8rem,4vw,2.9rem);margin-bottom:16px}
.cta-band p{color:var(--muted);max-width:560px;margin:0 auto 34px}
.heart-bg{position:absolute;inset:0;display:grid;place-items:center;opacity:.05;pointer-events:none}
.heart-bg svg{width:480px;animation:heartbeat 1.8s ease-in-out infinite}
@keyframes heartbeat{0%,100%{transform:scale(1)}14%{transform:scale(1.12)}28%{transform:scale(1)}42%{transform:scale(1.1)}56%{transform:scale(1)}}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);margin-top:90px;padding:70px clamp(20px,6vw,80px) 36px;background:rgba(255,255,255,.012)}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:44px;max-width:1280px;margin:0 auto}
.foot-grid h4{font-size:.95rem;margin-bottom:18px;color:var(--txt)}
.foot-grid ul{list-style:none;display:grid;gap:11px}
.foot-grid a{color:var(--muted);font-size:.92rem;transition:.3s}
.foot-grid a:hover{color:var(--teal);padding-left:5px}
.foot-desc{color:var(--muted);font-size:.92rem;margin-top:16px;max-width:300px}
.foot-bottom{max-width:1280px;margin:50px auto 0;padding-top:26px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:.85rem}
.heart-inline{color:var(--rose);display:inline-block;animation:heartbeat 1.8s infinite}

/* ---------- reveal animations ---------- */
.reveal{opacity:0;transform:translateY(42px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
.reveal-l{opacity:0;transform:translateX(-50px);transition:.85s cubic-bezier(.2,.7,.2,1)}
.reveal-r{opacity:0;transform:translateX(50px);transition:.85s cubic-bezier(.2,.7,.2,1)}
.reveal-l.in,.reveal-r.in{opacity:1;transform:none}
[data-stagger]>*{opacity:0;transform:translateY(34px);transition:.7s cubic-bezier(.2,.7,.2,1)}
[data-stagger].in>*{opacity:1;transform:none}

/* ---------- page hero (inner pages) ---------- */
.page-hero{padding:190px 24px 70px;text-align:center;max-width:880px;margin:0 auto}
.page-hero h1{font-size:clamp(2.2rem,5.4vw,3.6rem)}
.page-hero p{color:var(--muted);margin-top:20px;font-size:1.1rem}

/* ---------- forms ---------- */
.form-card{background:var(--glass);border:1px solid var(--line);border-radius:24px;padding:44px;backdrop-filter:blur(10px)}
.field{position:relative;margin-bottom:26px}
.field input,.field textarea,.field select{
  width:100%;background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;color:var(--txt);font-family:var(--font-b);font-size:.96rem;transition:.3s;outline:0}
.field textarea{min-height:130px;resize:vertical}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--teal);box-shadow:0 0 0 4px rgba(0,229,199,.12)}
.field label{position:absolute;left:18px;top:16px;color:var(--muted);font-size:.95rem;pointer-events:none;transition:.25s;background:transparent;padding:0 6px}
.field input:focus+label,.field input:not(:placeholder-shown)+label,
.field textarea:focus+label,.field textarea:not(:placeholder-shown)+label{
  top:-9px;font-size:.74rem;color:var(--teal);background:#0a1120;border-radius:6px}

/* ---------- timeline (about) ---------- */
.timeline{position:relative;margin-top:70px;padding-left:34px}
.timeline::before{content:'';position:absolute;left:8px;top:0;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--teal),var(--violet))}
.tl-item{position:relative;padding:0 0 54px 30px}
.tl-item::before{content:'';position:absolute;left:-30px;top:4px;width:18px;height:18px;border-radius:50%;
  background:var(--bg);border:3px solid var(--teal);box-shadow:0 0 14px rgba(0,229,199,.6)}
.tl-item:nth-child(2n)::before{border-color:var(--violet);box-shadow:0 0 14px rgba(139,92,246,.6)}
.tl-item .yr{font-family:var(--font-h);color:var(--teal);font-weight:800;letter-spacing:.1em}
.tl-item h3{margin:8px 0 8px;font-size:1.2rem}
.tl-item p{color:var(--muted);max-width:560px}

/* ---------- faq ---------- */
.faq{display:grid;gap:16px;margin-top:50px}
.faq details{background:var(--glass);border:1px solid var(--line);border-radius:14px;padding:22px 26px;transition:.3s}
.faq details[open]{border-color:rgba(0,229,199,.4)}
.faq summary{cursor:pointer;font-weight:600;font-family:var(--font-h);list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::after{content:'+';color:var(--teal);font-size:1.5rem;transition:.3s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{color:var(--muted);margin-top:14px;font-size:.95rem}

/* ---------- toast ---------- */
#toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%,80px);z-index:2000;
  background:linear-gradient(135deg,var(--teal),#0ea5e9);color:#01231d;font-weight:700;
  padding:15px 30px;border-radius:50px;opacity:0;transition:.5s;box-shadow:0 14px 40px rgba(0,229,199,.4)}
#toast.show{transform:translate(-50%,0);opacity:1}

/* ---------- responsive ---------- */
@media(max-width:980px){
  .split{grid-template-columns:1fr;gap:46px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .dna-stage{height:380px}
}
@media(max-width:760px){
  .nav-links,.nav-cta .btn{display:none}
  .burger{display:flex}
  section{padding:80px 22px}
  .mon-vitals{grid-template-columns:1fr 1fr}
}