:root{
  --bg:#000; --bg2:#080808; --card:#111; --line:#242424; --txt:#fff; --mut:#8c8c8c; --mut2:#b5b5b5;
  --cy:#00e5ff; --cy2:#8af4ff; --green:#20c58a; --red:#f6465d;
  color-scheme:dark;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--txt);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Inter","Segoe UI",Roboto,sans-serif;
  -webkit-font-smoothing:antialiased;line-height:1.55;overflow-x:hidden}
a{color:inherit}
img{display:block;max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}

/* Kopf */
header{position:sticky;top:0;z-index:20;background:rgba(0,0,0,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid #141414}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:12px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:.3px;text-decoration:none}
.brand i{width:12px;height:12px;border-radius:3px;background:var(--cy);transform:rotate(45deg);box-shadow:0 0 12px var(--cy)}
header nav{display:flex;align-items:center;gap:6px}
header nav a.l{color:var(--mut);text-decoration:none;font-size:14px;padding:8px 10px;border-radius:8px}
header nav a.l:hover{color:var(--txt)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 22px;border-radius:10px;font-weight:700;text-decoration:none;transition:transform .15s,filter .2s;border:1px solid transparent;font-size:16px}
.btn:hover{transform:translateY(-1px);filter:brightness(1.08)}
.btn.pri{background:var(--cy);color:#00161a}
.btn.ghost{border-color:var(--line);color:var(--txt);background:var(--card)}
.btn.sm{padding:9px 14px;font-size:14px;border-radius:8px}
@media (max-width:640px){header nav a.l{display:none}}

/* Hero */
.hero{padding:72px 0 40px;position:relative}
.hero::before{content:"";position:absolute;inset:-120px 0 auto;height:640px;pointer-events:none;
  background:radial-gradient(600px 340px at 72% 30%,rgba(0,229,255,.16),transparent 70%)}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;position:relative}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;color:var(--cy);margin-bottom:18px}
.kicker::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cy);box-shadow:0 0 10px var(--cy)}
h1{font-size:clamp(38px,6.2vw,68px);line-height:1.04;font-weight:850;letter-spacing:-1.5px}
h1 em{font-style:normal;color:var(--cy)}
.lead{font-size:clamp(17px,2vw,20px);color:var(--mut2);margin:22px 0 30px;max-width:560px}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.trust{display:flex;gap:18px;flex-wrap:wrap;margin-top:26px;color:var(--mut);font-size:14px}
.trust span::before{content:"✓ ";color:var(--green);font-weight:800}
@media (max-width:880px){.hero{padding-top:44px}.hero .wrap{grid-template-columns:1fr;gap:40px}}

/* Handy */
.phone{position:relative;width:min(320px,78vw);margin:0 auto;border-radius:44px;padding:10px;background:#0b0b0b;border:1px solid #2a2a2a;
  box-shadow:0 0 0 1px #000,0 40px 100px rgba(0,229,255,.16),0 30px 60px rgba(0,0,0,.6)}
.phone img{border-radius:34px;width:100%;height:auto;aspect-ratio:390/844;background:#000}
.phone.sm{width:100%;max-width:260px;border-radius:36px;padding:8px}
.phone.sm img{border-radius:28px}
.float{position:absolute;right:-26px;bottom:70px;width:200px;background:var(--card);border:1px solid rgba(246,70,93,.5);border-radius:14px;padding:14px 16px;
  box-shadow:0 0 50px rgba(246,70,93,.18),0 20px 40px rgba(0,0,0,.6);animation:bob 5s ease-in-out infinite}
.float b{display:block;color:var(--red);font-size:11px;letter-spacing:1.2px;text-transform:uppercase;margin-bottom:4px}
.float span{font-weight:750;font-size:16px}
.float small{display:block;color:var(--mut);font-size:12.5px;margin-top:4px;line-height:1.4}
@keyframes bob{50%{transform:translateY(-8px)}}
@media (max-width:520px){.float{right:-6px;bottom:40px;width:170px}}

/* Abschnitte */
section{padding:84px 0;border-top:1px solid #111}
.sec-h{max-width:720px;margin-bottom:40px}
.sec-h h2{font-size:clamp(28px,4vw,42px);line-height:1.12;font-weight:820;letter-spacing:-.6px}
.sec-h p{color:var(--mut2);font-size:18px;margin-top:14px}

/* Problem */
.tilts{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.tilt{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}
.tilt b{display:block;font-size:17px;margin-bottom:6px}
.tilt p{color:var(--mut);font-size:15px}
.tilt .ic{font-size:13px;font-weight:800;color:var(--red);letter-spacing:1px;text-transform:uppercase;margin-bottom:12px;display:block}
@media (max-width:900px){.tilts{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.tilts{grid-template-columns:1fr}}

/* Geschichte */
.story{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:start}
.story .quote{position:sticky;top:100px;font-size:clamp(24px,3vw,32px);font-weight:780;line-height:1.25;letter-spacing:-.3px}
.story .quote em{font-style:normal;color:var(--cy)}
.story .txt p{color:#d6d6d6;font-size:18px;margin-bottom:20px}
.story .txt p b{color:var(--txt)}
.story .sig{color:var(--mut);font-size:15px;margin-top:8px;display:flex;align-items:center;gap:10px}
.story .sig i{width:10px;height:10px;border-radius:2px;background:var(--cy);transform:rotate(45deg)}
.timeline{margin:30px 0 8px;border-left:2px solid var(--line);padding-left:22px}
.timeline div{position:relative;margin-bottom:18px}
.timeline div::before{content:"";position:absolute;left:-29px;top:7px;width:12px;height:12px;border-radius:3px;transform:rotate(45deg);background:#000;border:2px solid var(--cy)}
.timeline b{display:block;font-size:16px}
.timeline span{color:var(--mut);font-size:15px}
@media (max-width:880px){.story{grid-template-columns:1fr;gap:28px}.story .quote{position:static}}

/* Ablauf */
.steps{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 20px 24px;margin:0 -20px;scrollbar-width:thin}
.step{flex:0 0 260px;scroll-snap-align:start}
.step .n{display:flex;align-items:center;gap:10px;margin:18px 0 6px;font-weight:780;font-size:17px}
.step .n i{font-style:normal;width:28px;height:28px;border-radius:8px;background:rgba(0,229,255,.12);color:var(--cy);display:grid;place-items:center;font-size:14px;font-weight:850}
.step p{color:var(--mut);font-size:15px}
.note{color:var(--mut);font-size:13px;margin-top:6px}

/* Wissenschaft */
.sci{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.s{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px;display:flex;flex-direction:column}
.s .f{font-size:12px;font-weight:700;letter-spacing:1.3px;text-transform:uppercase;color:var(--cy);margin-bottom:10px}
.s h3{font-size:19px;line-height:1.3;margin-bottom:8px}
.s p{color:var(--mut2);font-size:15.5px;flex:1}
.s .src{margin-top:14px;padding-top:12px;border-top:1px solid var(--line);color:var(--mut);font-size:13px}
@media (max-width:760px){.sci{grid-template-columns:1fr}}

/* Journal */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.feat{list-style:none;display:grid;gap:16px}
.feat li{display:flex;gap:14px}
.feat li::before{content:"";flex:0 0 10px;height:10px;margin-top:8px;border-radius:2px;background:var(--cy);transform:rotate(45deg)}
.feat b{display:block;font-size:17px}
.feat span{color:var(--mut);font-size:15.5px}
.duo{display:flex;gap:16px;justify-content:center}
.duo .phone.sm:last-child{margin-top:48px}
@media (max-width:880px){.split{grid-template-columns:1fr}.duo .phone.sm{max-width:44vw}}

/* Ehrlich */
.not{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.not div{border:1px dashed #2c2c2c;border-radius:14px;padding:22px}
.not b{display:block;margin-bottom:6px;font-size:17px}
.not p{color:var(--mut);font-size:15px}
@media (max-width:760px){.not{grid-template-columns:1fr}}

/* Installieren */
.inst{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.inst div{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}
.inst b{display:block;font-size:17px;margin-bottom:10px}
.inst ol{padding-left:20px;color:var(--mut2);font-size:15px}
.inst li{margin-bottom:6px}
@media (max-width:760px){.inst{grid-template-columns:1fr}}

/* FAQ */
.faq{max-width:780px}
.faq details{border-bottom:1px solid var(--line);padding:18px 0}
.faq summary{cursor:pointer;font-weight:700;font-size:17px;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--cy);font-size:22px;line-height:1;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{color:var(--mut2);margin-top:10px;font-size:16px}

/* Schluss */
.end{text-align:center;padding:100px 0;position:relative;overflow:hidden}
.end::before{content:"";position:absolute;left:50%;top:50%;width:520px;height:520px;transform:translate(-50%,-50%);border-radius:50%;
  background:radial-gradient(circle,rgba(0,229,255,.18),transparent 65%);pointer-events:none}
.end h2{font-size:clamp(32px,5vw,54px);font-weight:850;letter-spacing:-1px;line-height:1.08;position:relative}
.end p{color:var(--mut2);font-size:18px;margin:16px auto 30px;max-width:520px;position:relative}
.end .btn{position:relative}
footer{border-top:1px solid #141414;padding:34px 0 50px;color:var(--mut);font-size:13.5px}
footer .wrap{display:grid;gap:14px}
footer nav{display:flex;gap:18px;flex-wrap:wrap}
footer a{color:var(--mut2)}

.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}html{scroll-behavior:auto}}

/* Sprachumschalter */
.lang{color:var(--mut);font-size:13px;font-weight:700;text-decoration:none;border:1px solid var(--line);border-radius:8px;padding:7px 9px;letter-spacing:.5px}
.lang:hover{color:var(--txt)}
.langbar{display:block;text-align:center;background:#0a2a30;color:var(--cy2);font-size:14px;font-weight:600;padding:10px 16px;text-decoration:none}
.langbar[hidden]{display:none}

/* Logo */
.brand .mark{height:21px;width:auto;display:block;overflow:visible}

.brand .beta{font-size:10px;font-weight:800;letter-spacing:1.2px;text-transform:uppercase;color:var(--cy);border:1px solid var(--cy);border-radius:6px;padding:4px 6px 3px;margin-left:2px;line-height:1}

/* iPhone & Mac */
.macwrap{position:relative;max-width:820px;margin:8px auto 40px;padding-right:6%}
.laptop{background:#0b0b0b;border:1px solid #2e2e2e;border-radius:20px;padding:12px;box-shadow:0 30px 80px rgba(0,229,255,.12),0 20px 60px rgba(0,0,0,.6)}
.laptop img{width:100%;height:auto;aspect-ratio:1470/920;border-radius:8px;background:#000}
.laptop-base{position:relative;height:16px;margin:0 -6%;background:linear-gradient(#45474e,#2a2b30);border-radius:2px 2px 16px 16px}
.laptop-base::after{content:"";position:absolute;left:50%;top:0;width:16%;height:7px;transform:translateX(-50%);background:#1e1f23;border-radius:0 0 8px 8px}
.macwrap .phone.sm{position:absolute;right:0;bottom:-34px;width:26%;max-width:210px;padding:6px;border-radius:28px}
.macwrap .phone.sm img{border-radius:22px}
@media (max-width:600px){.macwrap{padding-right:10%}.macwrap .phone.sm{width:32%;bottom:-24px;border-radius:20px;padding:4px}.macwrap .phone.sm img{border-radius:16px}.laptop{border-radius:12px;padding:6px}}