:root{--ink:#171b1d;--muted:#b5bdc1;--yellow:#f4cb36;--paper:#f4f5f3;--line:#394044;--max:1240px;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}body{margin:0}a{color:inherit;text-underline-offset:5px}button,input,textarea{font:inherit}a,button,input,textarea{touch-action:manipulation}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #147aad;outline-offset:5px}.wrap{width:min(var(--max),calc(100% - 96px));margin:auto}.skip{position:absolute;left:20px;top:-100px;background:var(--yellow);padding:15px;z-index:9}.skip:focus{top:10px}.review-strip{background:#e8e9e5;text-align:center;font-size:13px;padding:9px 16px;color:#41484c}.masthead{background:var(--ink);color:white}.header{min-height:116px;display:flex;align-items:center;justify-content:space-between;gap:28px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:13px;font-size:21px;font-weight:900;line-height:.99;text-decoration:none;letter-spacing:-.5px}.brand svg{width:41px;height:64px;flex:none}nav{display:flex;align-items:center;gap:24px;font-size:14px}nav a{text-decoration:none}nav a:hover,nav a[aria-current=page]{color:var(--yellow)}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:32px;background:var(--yellow);color:var(--ink);padding:18px 24px;text-decoration:none;font-weight:700;font-size:16px;border:0;border-radius:2px;min-height:52px}.button:hover{background:#ffda54;color:var(--ink)}.menu-toggle{display:none}.eyebrow{font-size:13px;letter-spacing:2px;text-transform:uppercase;font-weight:700;color:var(--yellow);margin:0 0 24px}.hero{display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center;padding:66px 0 64px}.hero h1{font-size:clamp(42px,5.1vw,70px);line-height:1.02;letter-spacing:-2.7px;max-width:720px;margin:0 0 26px}.hero .lead{font-size:20px;line-height:1.55;max-width:560px;color:#d1d7da;margin:0 0 32px}.hero .minor{font-size:14px;color:var(--muted);margin:22px 0 0}.diagram{margin:0;border-left:1px solid var(--line);padding-left:25px}.diagram svg{display:block;width:100%;max-height:450px}.diagram figcaption{text-align:center;font-size:12px;line-height:1.5;color:var(--muted)}.band{background:var(--yellow);padding:23px 0}.band .wrap{display:flex;justify-content:space-between;gap:25px;align-items:center;font-size:16px;line-height:1.45}.band span{font-weight:700}section.section{padding:82px 0}.section h2,.split h2{font-size:clamp(30px,3vw,43px);line-height:1.1;letter-spacing:-1.3px;margin:0 0 24px}.section .eyebrow{color:#61696b}.intro{max-width:700px;line-height:1.65;font-size:18px;color:#505b60}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:40px}.card{border-top:2px solid var(--ink);padding:24px 0}.number{font-size:14px;color:#677174}.card h3{font-size:24px;letter-spacing:-.6px;line-height:1.2;margin:26px 0 14px}.card p{font-size:16px;line-height:1.7;color:#4b565c;margin:0 0 22px}.text-link{font-size:15px;font-weight:700}.photo-section{background:#e6e8e4;padding:65px 0}.split{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.split p,.article p,.article li{font-size:18px;line-height:1.7;color:#4b565c}.photo{width:100%;height:380px;object-fit:cover;display:block}.caption{font-size:12px!important;margin:10px 0 0!important;line-height:1.5!important}.product-photo{width:100%;height:420px;object-fit:contain}.product-panel{background:#e7e9e5;padding:30px}.cta-section{background:var(--ink);color:white;padding:56px 0}.cta-section .wrap{display:flex;justify-content:space-between;gap:36px;align-items:center}.cta-section h2{font-size:32px;margin:0 0 12px;letter-spacing:-.8px}.cta-section p{color:#c9cfd1;line-height:1.6;margin:0;max-width:650px}.footer{padding:38px 0 28px;background:#101416;color:#bcc3c5}.footer .wrap{display:flex;justify-content:space-between;gap:30px;font-size:14px;line-height:1.7}.footer a{margin-right:20px}.page-hero{padding:65px 0}.page-hero h1{font-size:clamp(40px,5vw,65px);line-height:1.06;letter-spacing:-2px;margin:0 0 25px;max-width:920px}.page-hero p:last-child{font-size:20px;color:#c9cfd1;line-height:1.6;max-width:760px}.article{max-width:840px}.article h2{margin-top:46px}.article h2:first-child{margin-top:0}.article h3{font-size:24px}.article li{margin:12px 0}.stack{display:grid;gap:24px}.resource{padding:28px 0;border-top:1px solid #bdc3bf}.resource h2{font-size:25px;margin:0 0 14px}.resource p{font-size:17px;line-height:1.65;color:#4b565c}.contact-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:80px}.notice{border-left:4px solid var(--yellow);padding:16px 20px;background:#e6e8e4;font-size:16px;line-height:1.6}.form-layout{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:28px}.form-layout label{font-size:14px;font-weight:700;display:grid;gap:9px}.form-layout input,.form-layout textarea{border:1px solid #a6aead;border-radius:0;padding:14px;background:#fff;color:var(--ink);width:100%;font-size:16px}.form-layout textarea{min-height:140px;resize:vertical}.full{grid-column:1/-1}fieldset{padding:0;border:0;margin:0;min-width:0}legend{font-size:22px;font-weight:700;margin-bottom:12px}.form-layout input:disabled,.form-layout textarea:disabled{background:#e8ebe7;opacity:1}.button:disabled{background:#d2d6d0;color:#59625b;cursor:not-allowed}details{border-top:1px solid #bbc1bd;padding:24px 0}summary{font-size:18px;font-weight:700;cursor:pointer}details p{font-size:17px;line-height:1.7;color:#4b565c;max-width:800px}.white-section{background:white}.small{font-size:14px;line-height:1.6;color:#626b6f}
@media(min-width:1600px){.hero{padding:85px 0}}
@media(max-width:1100px){.wrap{width:calc(100% - 56px)}nav{gap:15px;font-size:13px}.brand{font-size:18px}.header{gap:16px}.hero h1{font-size:54px}.contact-grid{gap:40px}.split{gap:35px}}
@media(max-width:850px){.header{min-height:94px;position:relative;flex-wrap:wrap;padding:18px 0}.menu-toggle{display:block;background:transparent;color:white;border:1px solid #647076;font-size:15px;padding:12px 16px}.js nav{display:none}.js nav.open{display:flex}nav{width:100%;flex-direction:column;align-items:stretch;padding:18px 0;gap:0;font-size:16px}nav a{padding:16px 0}.hero{grid-template-columns:1fr 1fr;gap:20px}.hero h1{font-size:45px;letter-spacing:-1.7px}.hero .lead{font-size:18px}.diagram{padding-left:10px}.cards{gap:22px}.card h3{font-size:21px}.split,.contact-grid{grid-template-columns:1fr}.photo{height:330px}.footer .wrap{flex-direction:column;gap:20px}.cta-section .wrap{align-items:flex-start;flex-direction:column}}
@media(max-width:600px){.wrap{width:calc(100% - 40px)}.review-strip{font-size:12px}.brand{font-size:19px}.hero{grid-template-columns:1fr;padding:42px 0}.hero h1{font-size:46px;letter-spacing:-1.8px}.hero .lead{font-size:18px}.hero .button{width:100%;justify-content:space-between}.diagram{border:0;border-top:1px solid var(--line);padding:26px 0 0;margin-top:14px}.diagram svg{height:370px}.band .wrap{align-items:flex-start;flex-direction:column;gap:10px;font-size:15px}.cards{grid-template-columns:1fr;gap:8px}.card h3{margin-top:16px;font-size:25px}.section.section{padding:52px 0}.photo-section{padding:45px 0}.photo{height:250px}.form-layout{grid-template-columns:1fr}.full{grid-column:auto}.page-hero{padding:43px 0}.page-hero h1{font-size:41px}.page-hero p:last-child{font-size:18px}.cta-section h2{font-size:30px}}
@media(prefers-reduced-motion:no-preference){a,button{transition:background .15s,color .15s}}
.photo-section .eyebrow{color:#596165}
/* Paired vibration-transfer comparison, following Patric's reference. */
.hero{grid-template-columns:1.15fr 1fr}.diagram.comparison{padding-left:20px}.diagram.comparison svg{height:auto;max-height:none}.diagram.comparison figcaption{margin-top:20px}
@media(max-width:1000px){.hero{grid-template-columns:1fr}.diagram.comparison{border-left:0;border-top:1px solid var(--line);padding:30px 0 0;width:100%;max-width:540px;justify-self:center}.diagram.comparison svg{height:auto;max-height:none}}