@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');
:root{--ink:#101319;--paper:#f5f5f1;--gray:#93999f;--blue:#aebcff}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;font-family:'DM Sans',Arial,sans-serif;background:var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;cursor:pointer}a:focus-visible,button:focus-visible{outline:3px solid #869cf7;outline-offset:5px}h1,h2,h3,p{margin:0}h1,h2,h3{font-family:Manrope,Arial,sans-serif;font-weight:500}p{line-height:1.8}em{font-style:normal;color:#7d8492}header{background:var(--ink);color:var(--paper);display:flex;align-items:center;justify-content:space-between;height:95px;padding:0 5%;border-bottom:1px solid #ffffff20;position:relative;z-index:3}.logo{font-family:Manrope,sans-serif;font-size:35px;line-height:1;letter-spacing:-2px;font-weight:800}.logo>span{font-size:16px;letter-spacing:-.5px;margin-left:8px;font-weight:500}.logo small{display:block;font-family:'DM Sans',sans-serif;font-size:7px;letter-spacing:1.7px;font-weight:400;margin-top:9px}nav{display:flex;align-items:center;gap:34px;font-size:12px}.nav-cta{border:1px solid #ffffff50;padding:14px 20px;display:flex;gap:35px}nav a:hover{color:#b8c7ff}.menu{display:none}.hero{display:grid;grid-template-columns:1fr 1fr;background:var(--ink);color:var(--paper);min-height:680px}.hero-text{padding:55px 7% 30px 10%}.eyebrow{font-size:9px;letter-spacing:1.5px;color:var(--blue);font-weight:600;display:flex;align-items:center;gap:9px}.eyebrow i{width:5px;height:5px;border-radius:50%;background:var(--blue)}h1{font-size:clamp(62px,6.7vw,104px);letter-spacing:-5px;line-height:1.03;margin:35px 0 27px}h1 em{background:linear-gradient(90deg,#b9caff,#c7f3cf,#f3c2f2);background-clip:text;color:transparent}.hero-text>p{color:#aeb2bb;max-width:350px;font-size:14px}.hero-actions{display:flex;align-items:center;gap:25px;margin-top:28px}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:35px;padding:17px 22px;font-size:12px;font-weight:600}.light{background:var(--paper);color:var(--ink)}.button:hover{background:#c7d0f9}.textlink{font-size:12px;border-bottom:1px solid #7d8390;padding-bottom:7px;display:inline-block}.textlink:hover{color:#899ada}.hero-foot{display:flex;justify-content:space-between;align-items:center;margin-top:55px;border-top:1px solid #ffffff24;padding-top:18px;font-size:17px;letter-spacing:-1px}.hero-foot span{font-size:8px;color:#8c929b;letter-spacing:1.4px}.hero-art{overflow:hidden;position:relative;background:radial-gradient(ellipse at 60% 52%,#3a3a4b 0%,#20232f 40%,#181c23 70%);display:grid;place-items:center;min-height:600px}.hero-art:before{content:'';position:absolute;inset:0;background-image:linear-gradient(#ffffff04 1px,transparent 1px),linear-gradient(90deg,#ffffff04 1px,transparent 1px);background-size:55px 55px}.holo-seal{width:330px;height:330px;transform:rotate(-17deg);border-radius:50%;padding:13px;position:relative;background:repeating-conic-gradient(from 15deg,#b3f3e2 0deg,#e6c3f2 25deg,#e6f1bb 45deg,#b0d3f4 70deg,#ddd8fa 90deg);box-shadow:-25px 35px 60px #0008,inset 0 0 2px 2px #fff9;transition:transform .8s}.hero-art:hover .holo-seal{transform:rotate(-7deg)}.holo-seal:after{content:'';position:absolute;inset:0;border-radius:50%;background:repeating-radial-gradient(ellipse at 40% 40%,#ffffff20 0px,transparent 1px,transparent 3px);mix-blend-mode:overlay;pointer-events:none}.seal-inner{border:1px solid #3c567a90;border-radius:50%;height:100%;padding:33px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#26384d;background:linear-gradient(115deg,#ffffff20,#ffffff00,#ffffff50)}.seal-overline{font-size:8px;letter-spacing:2px}.seal-inner>strong{font-size:115px;line-height:1.2;letter-spacing:-10px;font-family:Manrope,sans-serif;font-weight:500;text-shadow:1px 1px 0 #ffffffb0}.seal-line{height:1px;background:#3c567a80;width:135px;margin:8px 0 12px}.seal-bottom{text-align:center;font-size:14px;letter-spacing:6px}.seal-bottom small{font-size:5px;letter-spacing:2px}.orbit{position:absolute;border:1px solid #ffffff15;width:450px;height:450px;border-radius:50%;transform:rotate(-30deg) scaleX(1.3)}.orbit-two{width:590px;height:590px}.art-caption{position:absolute;bottom:30px;left:35px;right:35px;display:flex;justify-content:space-between;font-size:7px;letter-spacing:1.6px;color:#959da9}.cross{position:absolute;color:#9099ac;font-size:22px;font-weight:300}.cross-one{top:40px;left:40px}.cross-two{right:40px;bottom:85px}.ticker{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:25px 5%;border-bottom:1px solid #d9dbe0;font-size:10px;letter-spacing:1px}.ticker b{font-size:18px;font-weight:400;color:#848b9e}.section{padding:95px 5%}.muted{color:#6c7380}.two-col{display:grid;grid-template-columns:1.1fr 1fr;gap:10%;margin-top:33px}h2{font-size:clamp(34px,3.6vw,54px);letter-spacing:-2.3px;line-height:1.2}.lead{font-size:20px;margin-bottom:18px;line-height:1.6}.two-col p:not(.lead){font-size:14px;color:#6d727c}.intro{padding-bottom:70px}.holography{padding-top:25px}.section-head{display:flex;justify-content:space-between;gap:50px;align-items:end;margin-bottom:35px}.section-head h2{margin-top:25px}.section-head>p{max-width:390px;font-size:14px;color:#6b737f}.applications{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid #d5d8df}.application{position:relative;border:0;border-right:1px solid #d5d8df;text-align:left;padding:27px;background:transparent}.application:last-child{border:0}.application>span:first-child{font-size:8px;letter-spacing:1px;display:block;color:#767e89}.application strong{font-size:18px;font-weight:500;display:block;margin-top:12px}.application .plus{position:absolute;right:22px;top:37px;font-size:20px}.application.active{background:var(--ink);color:white}.application.active>span:first-child{color:var(--blue)}.application-detail{display:grid;grid-template-columns:1fr 1fr;background:#e9ebef;margin-top:22px;min-height:425px}.detail-art{display:grid;place-items:center;background:radial-gradient(ellipse,#d9dfe8,#e9ecf1);padding:40px}.product-box{position:relative;background:#f9f9f6;box-shadow:18px 25px 40px #58647926;width:270px;min-height:295px;padding:25px;transform:rotate(-8deg)}.product-box>span:first-child{font-size:12px;letter-spacing:2px}.product-box>strong{display:block;font:500 30px/1.1 Manrope,sans-serif;letter-spacing:-1px;margin-top:35px}.mini-seal{position:absolute;bottom:45px;right:24px;width:70px;height:70px;border-radius:50%;background:conic-gradient(#a9dedb,#d7c4f2,#e4ed9e,#b2d9e7,#b7c8ed,#e7bce4,#a9dedb);display:flex;align-items:center;justify-content:center;flex-direction:column;font-size:25px;line-height:.8;color:#40506b;box-shadow:1px 2px 5px #53607f55;transform:rotate(10deg)}.mini-seal small{font-size:5px;letter-spacing:1px;margin-top:6px}.box-label{position:absolute;bottom:15px;left:25px;font-size:5px;letter-spacing:.7px;color:#788191}.detail-copy{padding:50px 45px}.detail-copy h3{font-size:31px;line-height:1.2;letter-spacing:-1px;margin:18px 0}.detail-copy p{font-size:14px;color:#67707d}.detail-copy ul{font-size:12px;line-height:2;color:#596370;padding-left:17px;margin:20px 0}.dark{color:var(--ink)}.software{background:var(--ink);color:var(--paper)}.software h2 em{color:#b7c7fa}.software .two-col p:not(.lead){color:#a1aab8}.software-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:45px;margin-top:60px;border-top:1px solid #ffffff25;padding-top:30px}.tech-icon{font-size:30px;font-weight:300;color:var(--blue)}.software-grid h3{font-size:21px;margin:25px 0 15px}.software-grid p{font-size:14px;color:#a1aab8}.process-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:45px;margin-top:45px}.process-grid article{border-top:1px solid #d5d8dd;padding-top:25px}.process-grid article>span{font-family:Manrope,sans-serif;font-size:42px;color:#8d97aa}.process-grid h3{font-size:20px;margin:20px 0 12px}.process-grid p{font-size:14px;color:#6d7582}.contact{background:#e4e8ef}.contact .two-col{gap:8%}.contact .two-col>div>p{max-width:340px;margin-top:25px}.big-email{display:flex;justify-content:space-between;align-items:center;gap:30px;border-bottom:1px solid #b7c0cd;padding-bottom:22px;font:500 36px Manrope,sans-serif;letter-spacing:-1.6px}.big-email:hover{color:#586fa1}.company{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:30px;font-size:14px}.company>strong{grid-column:1/-1;font-weight:500}.company p{font-size:12px;color:#5f6c81}footer{display:flex;align-items:center;justify-content:space-between;padding:35px 5%;background:var(--ink);color:#c8cbd1;font-size:10px}.privacy{border:0;padding:0;background:transparent;color:inherit;font-size:10px}dialog{max-width:650px;width:calc(100% - 32px);padding:45px;border:0;background:var(--paper);color:var(--ink)}dialog::backdrop{background:#09101dc9;backdrop-filter:blur(5px)}dialog h2{font-size:28px;margin:15px 0 22px}dialog p{font-size:14px;margin-top:15px}.close{position:absolute;right:15px;top:15px;width:30px;height:30px;border:0;background:none;font-size:22px}.skip{position:fixed;top:-80px;left:10px;padding:15px;background:white;z-index:9}.skip:focus{top:10px}@media(min-width:1600px){header,.section,.ticker,footer{padding-left:max(5%,calc((100vw - 1440px)/2));padding-right:max(5%,calc((100vw - 1440px)/2))}}@media(max-width:1000px){nav{gap:20px}.hero{min-height:600px}h1{font-size:75px}.hero-text{padding-top:45px}.hero-actions{display:block}.hero-actions .textlink{margin-top:22px}.hero-foot{margin-top:30px}.holo-seal{width:275px;height:275px}.seal-inner{padding:20px}.seal-inner>strong{font-size:90px}.seal-overline{font-size:6px}.art-caption{left:20px;right:20px;font-size:6px}.application strong{font-size:15px}.application{padding:24px 20px}.application .plus{right:16px}.detail-copy{padding:35px 28px}.detail-copy h3{font-size:27px}.detail-art{padding:25px}.product-box{width:230px}.big-email{font-size:30px}.section{padding-top:75px;padding-bottom:75px}.holography{padding-top:0}.intro{padding-bottom:60px}}@media(max-width:700px){header{height:80px}.logo{font-size:30px}.logo small{font-size:6px}.menu{display:block;background:none;border:0;color:white;font-size:12px}nav{display:none;position:absolute;top:80px;left:0;right:0;background:var(--ink);padding:25px 6%;border-top:1px solid #ffffff25;align-items:stretch}nav.open{display:flex;flex-direction:column}nav a{padding:10px 0}.nav-cta{padding:14px}.hero{grid-template-columns:1fr}.hero-text{padding:35px 6% 30px}.hero .eyebrow{font-size:7px;letter-spacing:1px}h1{font-size:73px;letter-spacing:-4px;margin:30px 0 24px}.hero-text>p{font-size:14px}.hero-actions{display:flex;gap:20px}.hero-actions .textlink{margin:0;font-size:11px}.button{padding:16px 18px;gap:25px}.hero-foot{margin-top:38px}.hero-art{min-height:400px}.holo-seal{width:270px;height:270px}.orbit{width:340px;height:340px}.orbit-two{width:450px;height:450px}.art-caption{font-size:6px;bottom:20px}.cross-one{top:25px;left:25px}.cross-two{right:25px;bottom:60px}.ticker{padding:20px 6%;display:grid;grid-template-columns:1fr 1fr;gap:14px;font-size:8px}.ticker b{display:none}.section{padding:65px 6%}.two-col{grid-template-columns:1fr;gap:25px;margin-top:26px}h2{font-size:35px;letter-spacing:-1.5px}.lead{font-size:18px}.holography{padding-top:0}.section-head{display:block}.section-head>p{margin-top:22px}.applications{grid-template-columns:1fr}.application{border-right:0;border-bottom:1px solid #d5d8df;padding:20px}.application strong{font-size:17px;margin-top:8px}.application .plus{top:27px}.application-detail{grid-template-columns:1fr}.detail-art{min-height:350px;padding:35px}.product-box{width:250px}.detail-copy{padding:30px}.detail-copy h3{font-size:29px}.software-grid,.process-grid{grid-template-columns:1fr;gap:28px;margin-top:35px}.software-grid article{display:grid;grid-template-columns:35px 1fr;gap:8px 18px}.software-grid h3{margin:0;font-size:21px}.software-grid p{grid-column:2}.tech-icon{grid-row:1/3}.process-grid h3{margin-top:12px}.process .textlink{margin-top:25px}.process-grid article{padding-top:22px}.contact .two-col{gap:35px}.big-email{font-size:31px}.company{gap:20px}.company p{font-size:12px}footer{display:grid;grid-template-columns:1fr 1fr;gap:25px;padding:32px 6%}footer .logo{grid-column:1/-1}.privacy{text-align:left}dialog{padding:30px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* Refinement, 27 October 2026 */
nav{gap:25px}.original-material{padding-top:0;padding-bottom:65px}.original-material figure{margin:0}.original-material img{display:block;width:100%;height:auto;aspect-ratio:1312/300;object-fit:cover}.original-material figcaption{display:flex;justify-content:space-between;gap:20px;font-size:8px;letter-spacing:1.4px;padding-top:15px;color:#68717f}.original-material figcaption>span{font-size:7px}.detail-art{padding:0;overflow:hidden;min-height:425px}.detail-art .product-box{display:none}.hologram-photo{display:block;width:100%;height:100%;min-height:425px;max-height:540px;object-fit:cover}.research{background:#e9ecf0}.research .textlink{margin-top:23px}.contact{padding-top:45px;padding-bottom:45px}.contact h2{font-size:32px;letter-spacing:-1px}.contact .two-col{margin-top:20px}.contact .two-col>div>p{font-size:13px;margin-top:18px;max-width:330px}.big-email{font-size:29px;padding-bottom:18px}.company{margin-top:22px}.company p{font-size:11px}.hero .hero-foot span{font-size:7px}.hero h1{font-size:clamp(62px,6.4vw,94px)}
@media(max-width:1000px){nav{gap:17px;font-size:11px}.hero h1{font-size:74px}.original-material{padding-bottom:50px}.original-material figcaption>span{max-width:200px;text-align:right;line-height:1.7}.hologram-photo{min-height:450px;object-position:45% center}.big-email{font-size:26px}}
@media(max-width:700px){.hero h1{font-size:70px}.original-material{padding-top:0;padding-bottom:45px}.original-material img{aspect-ratio:2/1;object-position:65% center}.original-material figcaption{font-size:7px;letter-spacing:.6px;align-items:start}.original-material figcaption>span{font-size:6px;max-width:135px}.detail-art{min-height:320px}.hologram-photo{min-height:320px;max-height:380px;object-fit:cover}.research .two-col{gap:25px}.contact{padding-top:40px;padding-bottom:40px}.contact h2{font-size:29px}.big-email{font-size:29px}.company{font-size:13px}.hero .hero-foot span{font-size:6px;letter-spacing:1px}}

/* Approved K2-SK v5: original shared K and heavier 2 with straight optical grating. */
.logo{flex-shrink:0}.logo .k2-group-logo{display:block;width:184px;height:auto;object-fit:contain;object-position:left center}.logo small{font-size:6px;letter-spacing:1.3px;margin-top:7px}footer .logo .k2-group-logo{width:156px;height:auto}.seal-brand{display:block;width:100%;max-width:220px;height:auto;margin:14px 0 4px}
@media(max-width:1000px){.seal-brand{max-width:196px}}
@media(max-width:700px){.logo .k2-group-logo{width:156px;height:auto}.logo small{font-size:5.5px;margin-top:5px}.seal-brand{max-width:196px}}

.language-switch{display:flex;align-items:center;gap:10px;border-left:1px solid #9ba8b54d;padding-left:20px;margin-left:3px}.language-switch button{border:0;border-bottom:1px solid transparent;background:transparent;padding:7px 0;font:500 10px Arial,sans-serif;letter-spacing:.6px;color:inherit;opacity:.6}.language-switch button.active{opacity:1;border-bottom-color:currentColor}.language-switch button:hover{opacity:1}

.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px 24px}.hero-actions>a{max-width:100%;min-width:0}.hero-actions>.button{flex:0 0 auto;white-space:normal;line-height:1.5}.hero-actions>.textlink{flex:0 1 auto;white-space:normal;line-height:1.6;margin:0}.hero-text{min-width:0}.holo-seal{animation:k2-disc-turn 52s linear infinite;overflow:hidden;will-change:transform}.holo-seal:before{content:'';position:absolute;inset:-12%;border-radius:50%;pointer-events:none;background:conic-gradient(from 25deg,transparent 0deg,#ffffff80 40deg,#aafce270 85deg,transparent 125deg,#eeb9ff80 180deg,transparent 240deg,#dbefff90 280deg,transparent 360deg);mix-blend-mode:screen;animation:k2-holo-light 13s ease-in-out infinite}.seal-inner{position:relative;z-index:1}.holo-paused .holo-seal,.holo-paused .holo-seal:before{animation-play-state:paused}.disc-toggle{position:absolute;right:28px;bottom:61px;z-index:2;border:1px solid #c0cad15c;background:#10131980;color:#e6ebf4;display:grid;place-items:center;width:30px;height:30px;padding:0;font-size:14px}.hero .hero-foot span{max-width:65%;text-align:right;line-height:1.6}.original-material figcaption>*{min-width:0}
@keyframes k2-disc-turn{from{transform:rotate(-17deg)}to{transform:rotate(343deg)}}@keyframes k2-holo-light{0%,100%{opacity:.28;transform:rotate(0deg)}50%{opacity:.57;transform:rotate(160deg)}}
[lang=de] .hero h1{font-size:clamp(50px,5.2vw,78px);letter-spacing:-3.5px}[lang=ru] .hero h1{font-size:clamp(43px,4.8vw,72px);letter-spacing:-2.8px}
@media(max-width:1050px){header{height:80px}.menu{display:block;background:none;border:0;color:white;font-size:12px}nav{display:none;position:absolute;top:80px;left:0;right:0;background:var(--ink);padding:22px 6%;border-top:1px solid #ffffff25;align-items:stretch}nav.open{display:flex;flex-direction:column;gap:12px}nav a{padding:10px 0}.language-switch{border-left:0;border-top:1px solid #ffffff25;margin:8px 0 0;padding:14px 0 0;gap:20px}.language-switch button{font-size:12px}.hero-actions>.textlink{margin:0}}
@media(max-width:700px){[lang=de] .hero h1{font-size:58px;letter-spacing:-3px}[lang=ru] .hero h1{font-size:46px;letter-spacing:-2.4px}.hero-actions{gap:16px 20px}.disc-toggle{bottom:50px;right:22px}.art-caption{gap:15px}.art-caption>span{max-width:48%;line-height:1.7}}@media(max-width:370px){[lang=de] .hero h1{font-size:51px}[lang=ru] .hero h1{font-size:41px}.hero-actions>.button{padding-left:16px;padding-right:16px}}
@media(prefers-reduced-motion:reduce){.holo-seal{animation-duration:90s}.holo-seal:before{animation:none;opacity:.35}}
@media(max-width:700px){.hero h1{font-size:clamp(46px,16.5vw,70px)}[lang=en] .hero h1{font-size:clamp(46px,16.5vw,70px)}}
@media(max-width:700px){[lang=ru] .hero h1{font-size:clamp(32px,11.5vw,46px);letter-spacing:-2px}}