:root{
  --bg:#06080c; --bg2:#0b0f16; --panel:#10151f; --line:#1e2735;
  --txt:#e9eef5; --mut:#8794a6; --teal:#7fe3c8; --teal-d:#36c79e;
  --warn:#ffcf6b; --bad:#ff6b6b; --good:#7fe3c8;
  --r:18px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Manrope',system-ui,sans-serif;background:var(--bg);color:var(--txt);
  line-height:1.55;overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
em{font-style:normal;color:var(--teal)}

/* progress + nav */
.scroll-progress{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--teal),var(--teal-d));z-index:100;box-shadow:0 0 12px var(--teal)}
.nav{position:fixed;top:0;left:0;right:0;display:flex;justify-content:space-between;align-items:center;
  padding:18px 32px;z-index:90;backdrop-filter:blur(12px);background:rgba(6,8,12,.55);border-bottom:1px solid transparent;transition:.3s}
.nav.solid{border-color:var(--line);background:rgba(6,8,12,.85)}
.brand{font-weight:800;letter-spacing:1px;font-size:20px}
.brand span{color:var(--teal)}
.brand.big{font-size:40px}
.nav-links{display:flex;gap:24px;list-style:none}
.nav-links a{font-size:14px;color:var(--mut);transition:.2s}
.nav-links a:hover{color:var(--teal)}
@media(max-width:720px){.nav-links{display:none}}

/* hero */
.hero{min-height:100vh;position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:120px 24px 60px;overflow:hidden}
.hero-glow{position:absolute;width:900px;height:900px;border-radius:50%;
  background:radial-gradient(circle,rgba(54,199,158,.18),transparent 60%);top:-200px;filter:blur(20px);animation:pulse 6s ease-in-out infinite}
@keyframes pulse{0%,100%{transform:scale(1);opacity:.7}50%{transform:scale(1.15);opacity:1}}
.hero-inner{position:relative;z-index:2;max-width:760px}
.eyebrow{color:var(--teal);letter-spacing:3px;text-transform:uppercase;font-size:13px;font-weight:600}
.hero-title{font-size:clamp(48px,11vw,108px);font-weight:800;line-height:.95;margin:16px 0 18px}
.hero-title span{color:var(--teal);display:inline-block}
.hero-sub{color:var(--mut);font-size:clamp(15px,2.2vw,19px);max-width:560px;margin:0 auto 30px}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn{padding:13px 26px;border-radius:40px;font-weight:600;font-size:15px;cursor:pointer;border:1px solid transparent;transition:.25s;display:inline-block}
.btn.sm{padding:10px 20px;font-size:14px}
.btn-primary{background:var(--teal);color:#04130e}
.btn-primary:hover{background:var(--teal-d);transform:translateY(-2px);box-shadow:0 10px 30px rgba(54,199,158,.35)}
.btn-ghost{border-color:var(--line);color:var(--txt)}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal)}

/* hero device dial */
.hero-device{position:relative;z-index:2;margin-top:54px}
.dial{width:min(330px,80vw);aspect-ratio:1;border-radius:50%;background:radial-gradient(circle at 50% 30%,#11161f,#05070b);
  border:1px solid var(--line);position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  box-shadow:0 30px 80px rgba(0,0,0,.6),inset 0 0 40px rgba(0,0,0,.5)}
.dial-ring{position:absolute;inset:14px;border-radius:50%;border:3px dashed var(--teal);opacity:.8;animation:spin 24s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.dial-status{display:flex;gap:18px;margin-bottom:6px;color:#fff;font-size:15px;opacity:.9}
.dial-status .ic{color:var(--teal)}
.dial-status .bat{color:var(--mut)}
.ecg{width:74%;height:64px}
.ecg path{fill:none;stroke:#fff;stroke-width:2.4;stroke-linejoin:round;stroke-linecap:round;
  filter:drop-shadow(0 0 6px rgba(127,227,200,.6));stroke-dasharray:1400;stroke-dashoffset:1400;animation:draw 3s linear infinite}
@keyframes draw{to{stroke-dashoffset:0}}
.bpm{margin-top:4px;font-weight:800;font-size:42px;line-height:1}
.bpm small{display:block;font-size:13px;font-weight:500;color:var(--mut);letter-spacing:2px}
.scroll-hint{position:absolute;bottom:24px;color:var(--mut);font-size:13px;letter-spacing:1px;animation:bob 2s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0);opacity:.5}50%{transform:translateY(6px);opacity:1}}

/* sections */
.section{padding:110px 24px;max-width:1120px;margin:0 auto}
.section.alt{background:linear-gradient(180deg,transparent,rgba(16,21,31,.5),transparent);max-width:none;margin:0;padding-left:max(24px,calc((100vw - 1120px)/2));padding-right:max(24px,calc((100vw - 1120px)/2))}
.sec-head{max-width:680px;margin-bottom:48px}
.tag{display:inline-block;font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--teal);
  border:1px solid var(--line);padding:6px 14px;border-radius:30px;margin-bottom:18px}
.tag.warn{color:var(--warn)}.tag.alert{color:var(--bad)}
.sec-head h2{font-size:clamp(28px,5vw,46px);font-weight:800;line-height:1.08;letter-spacing:-.5px}
.sec-sub{color:var(--mut);margin-top:14px;font-size:17px}

/* feature grid */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px}
.fcard{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:26px 22px;transition:.3s}
.fcard:hover{border-color:var(--teal);transform:translateY(-4px);box-shadow:0 18px 40px rgba(0,0,0,.4)}
.fnum{font-size:34px;font-weight:800;color:var(--teal)}
.fic{font-size:30px;color:var(--teal)}
.fcard h3{margin:12px 0 8px;font-size:18px}
.fcard p{color:var(--mut);font-size:14px}

/* gap */
.gap{text-align:center}
.gap-inner{max-width:720px;margin:0 auto}
.gap h2{font-size:clamp(28px,5vw,46px);font-weight:800;margin:14px 0 18px}
.gap-lead{color:var(--mut);font-size:18px;max-width:560px;margin:0 auto 26px}
.gap-lead strong{color:var(--txt)}
.gap-map{background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--warn);border-radius:12px;
  padding:22px 26px;text-align:left;font-family:ui-monospace,monospace;font-size:14px;color:var(--mut);
  white-space:pre;overflow-x:auto;display:inline-block;line-height:2}
.gap-cta{margin-top:30px;color:var(--teal);font-weight:600;font-size:18px}

/* map */
.map-wrap{display:grid;grid-template-columns:340px 1fr;gap:40px;align-items:center}
@media(max-width:780px){.map-wrap{grid-template-columns:1fr}}
.torso-svg{width:100%;max-width:340px;display:block;margin:0 auto;overflow:visible}
.pt circle{fill:rgba(127,227,200,.18);stroke:var(--teal);stroke-width:1.5;cursor:pointer;transition:.25s}
.pt{animation:ptpulse 2.4s ease-in-out infinite}
.pt:nth-child(odd){animation-delay:.6s}
@keyframes ptpulse{0%,100%{opacity:.6}50%{opacity:1}}
.pt:hover circle,.pt.active circle{fill:var(--teal);r:14;filter:drop-shadow(0 0 12px var(--teal))}
.map-panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:30px}
.mp-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.mp-dot{width:14px;height:14px;border-radius:50%;background:var(--mut);transition:.3s}
.mp-head h3{font-size:22px}
.mp-guide{color:var(--mut);min-height:52px;font-size:15px}
.mp-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:22px 0 16px}
.mp-meta label{display:block;font-size:11px;letter-spacing:1px;text-transform:uppercase;color:var(--mut);margin-bottom:4px}
.mp-meta strong{font-size:15px}
.mp-bar{height:8px;border-radius:6px;background:#0a0e15;overflow:hidden}
.mp-bar span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--teal),var(--teal-d));transition:width .5s}
.mp-q{color:var(--mut);font-size:12px;margin-top:6px;display:block}

/* learn */
.learn-wrap{display:grid;grid-template-columns:280px 1fr;gap:32px}
@media(max-width:780px){.learn-wrap{grid-template-columns:1fr}}
.learn-list{display:flex;flex-direction:column;gap:10px}
.lbtn{text-align:left;background:var(--panel);border:1px solid var(--line);color:var(--txt);padding:16px 18px;border-radius:12px;cursor:pointer;font-size:15px;font-weight:600;transition:.2s}
.lbtn:hover{border-color:var(--teal)}
.lbtn.active{background:rgba(127,227,200,.1);border-color:var(--teal);color:var(--teal)}
.learn-stage{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:30px}
.phono{height:120px;border-radius:12px;background:#070a0f;display:flex;align-items:center;gap:3px;padding:0 18px;overflow:hidden}
.phono i{flex:1;background:var(--teal);border-radius:3px;opacity:.85;height:10%;transition:height .12s,opacity .12s}
.cycle{display:grid;grid-template-columns:repeat(4,1fr);margin:18px 0;text-align:center;font-size:12px;color:var(--mut)}
.cycle .ph{padding:6px;border-radius:6px;transition:.2s}
.cycle .ph.lit{background:rgba(127,227,200,.15);color:var(--teal)}
.learn-desc{color:var(--mut);font-size:15px;min-height:48px}

/* compare */
.compare{position:relative;height:300px;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);user-select:none;background:#070a0f}
.cmp-layer{position:absolute;inset:0;display:flex;align-items:center}
.cmp-layer svg{width:100%;height:60%}
.cmp-before{width:50%;overflow:hidden;border-right:2px solid var(--teal);background:#0a0e15}
.cmp-label{position:absolute;top:16px;left:20px;font-size:13px;font-weight:600;color:var(--good);background:rgba(0,0,0,.4);padding:4px 12px;border-radius:20px}
.cmp-label.warn{color:var(--warn)}
.wave{fill:none;stroke-width:2.4;stroke-linejoin:round}
.wave.good{stroke:var(--good);filter:drop-shadow(0 0 5px rgba(127,227,200,.5))}
.wave.bad{stroke:var(--warn);filter:drop-shadow(0 0 5px rgba(255,207,107,.5))}
.cmp-handle{position:absolute;top:0;bottom:0;left:50%;width:40px;transform:translateX(-50%);cursor:ew-resize;display:flex;align-items:center;justify-content:center}
.cmp-handle span{width:38px;height:38px;border-radius:50%;background:var(--teal);color:#04130e;display:grid;place-items:center;font-weight:800;box-shadow:0 0 20px rgba(127,227,200,.6)}
.cmp-legend{margin-top:18px;color:var(--mut);font-size:14px;display:flex;align-items:center;gap:6px}
.dot{width:12px;height:12px;border-radius:50%;display:inline-block;margin:0 4px 0 12px}
.dot.bad{background:var(--warn)}.dot.good{background:var(--good)}

/* peds */
.peds-wrap{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:34px}
.peds-toggle{display:inline-flex;background:#070a0f;border-radius:40px;padding:6px;gap:6px;margin-bottom:28px}
.pbtn{border:none;background:transparent;color:var(--mut);padding:10px 24px;border-radius:30px;cursor:pointer;font-weight:600;font-size:15px;transition:.25s}
.pbtn.active{background:var(--teal);color:#04130e}
.peds-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px}
.pmetric{background:#070a0f;border:1px solid var(--line);border-radius:14px;padding:20px}
.pmetric label{font-size:11px;letter-spacing:1px;text-transform:uppercase;color:var(--mut)}
.pmetric strong{display:block;font-size:26px;font-weight:800;color:var(--teal);margin:6px 0 2px;transition:.2s}
.pmetric small{color:var(--mut);font-size:12px}
.peds-bpm{display:flex;align-items:center;gap:12px;margin-top:24px;font-size:22px;font-weight:800}
.mini-heart{color:var(--bad);font-size:28px;animation:beat .73s ease-in-out infinite}
@keyframes beat{0%,100%{transform:scale(1)}15%{transform:scale(1.28)}30%{transform:scale(1)}}

/* arrhythmia */
.arr-wrap{display:flex;flex-direction:column;align-items:flex-start;gap:18px}
.arr-monitor{width:100%;background:#070a0f;border:1px solid var(--line);border-radius:var(--r);padding:24px;overflow:hidden}
.arr-top{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.arr-led{width:14px;height:14px;border-radius:50%;background:var(--good);box-shadow:0 0 12px var(--good);transition:.3s}
.arr-led.bad{background:var(--bad);box-shadow:0 0 14px var(--bad);animation:blink .5s steps(2) infinite}
@keyframes blink{50%{opacity:.3}}
.arr-state{font-weight:700;font-size:17px}
.arr-bpm{margin-left:auto;font-weight:800;color:var(--teal);font-size:18px}
.arr-ecg{width:100%;height:200px}
.arr-ecg path{fill:none;stroke:var(--good);stroke-width:2.4;filter:drop-shadow(0 0 6px rgba(127,227,200,.5));transition:stroke .3s}
.arr-ecg.bad path{stroke:var(--bad);filter:drop-shadow(0 0 6px rgba(255,107,107,.5))}
.arr-ecg circle{fill:#fff;filter:drop-shadow(0 0 8px #fff)}
.arr-alert{margin-top:10px;color:var(--bad);font-weight:600;font-size:15px;opacity:0;transform:translateY(6px);transition:.3s}
.arr-alert.show{opacity:1;transform:none}

/* report */
.report{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;max-width:760px}
.rep-head{display:flex;justify-content:space-between;align-items:center;padding:24px 28px;border-bottom:1px solid var(--line)}
.rep-head h3{font-size:20px}
.rep-head small{color:var(--mut)}
.rep-badge{background:rgba(127,227,200,.12);color:var(--teal);border:1px solid var(--teal);padding:6px 14px;border-radius:20px;font-weight:700;font-size:13px}
.rep-rows{list-style:none;padding:8px 0}
.rep-rows li{display:flex;align-items:center;gap:14px;padding:15px 28px;border-bottom:1px solid rgba(30,39,53,.5);font-size:15px;
  opacity:0;transform:translateX(-12px);transition:.5s}
.rep-rows li.in{opacity:1;transform:none}
.rep-rows li.flag{background:rgba(255,207,107,.04)}
.rep-rows li b{font-weight:600}
.rep-rows li i{margin-left:auto;color:var(--mut);font-style:normal;font-size:14px;text-align:right}
.rdot{width:10px;height:10px;border-radius:50%;flex-shrink:0}
.rdot.good{background:var(--good)}.rdot.warn{background:var(--warn)}.rdot.bad{background:var(--bad)}
.rep-foot{padding:24px 28px}
.rep-foot p{color:var(--mut);font-size:14px;margin-bottom:18px}
.rep-foot strong{color:var(--txt)}
.rep-actions{display:flex;gap:12px;flex-wrap:wrap}

/* footer */
.footer{text-align:center;padding:80px 24px 60px;border-top:1px solid var(--line);margin-top:40px}
.footer p{color:var(--mut);margin-top:10px}

/* reveal anim */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
.feature-grid .fcard:nth-child(n){transition-delay:calc(var(--i,0)*60ms)}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}}