:root{--ink:#282827;--red:#B51F2B;--muted:#61666a;--line:#dcdedc;--paper:#f5f5f2}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;color:var(--ink);font-family:Arial,Helvetica,sans-serif;background:#fff}a{color:inherit;text-decoration:none}button,select{font:inherit}button,a,summary,select{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible,select:focus-visible{outline:3px solid var(--red);outline-offset:5px}header{height:92px;padding:0 5%;display:flex;align-items:center;justify-content:space-between;background:white;position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line)}.logo{font-weight:900;font-size:32px;letter-spacing:-2px;display:inline-flex;align-items:baseline;gap:5px}.logo span{width:8px;height:8px;background:var(--red)}nav{display:flex;align-items:center;gap:28px;font-size:13px;font-weight:600}.nav-cta{border:1px solid var(--line);padding:14px 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ul{font-size:14px}.product-tag{font-size:10px;letter-spacing:1.7px;color:var(--muted);font-weight:700}.docs{display:flex;justify-content:space-between;align-items:center;gap:30px;margin-top:45px}.docs .eyebrow{color:var(--muted)}.docs h3{margin:10px 0}.docs p{font-size:12px;color:var(--muted)}.outline{border:1px solid var(--line);padding:17px;font-size:12px;white-space:nowrap}.process{background:var(--ink);color:white}.process .eyebrow{color:#c5c8ca}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-top:50px}.steps article{border-top:1px solid #53585b;padding-top:25px}.steps span{font-size:12px;color:#c5c5c2}.steps p{font-size:14px;color:#b6bdc0}.contact{display:grid;grid-template-columns:1.1fr 1fr;gap:100px}.contact>div>p{max-width:430px;color:var(--muted);font-size:14px}.contact .eyebrow{color:var(--muted)}.contact-note{font-size:12px;line-height:1.7;display:flex;align-items:baseline;gap:10px;margin-top:30px;max-width:360px}.red-dot{flex-shrink:0}.checklist{background:var(--paper);padding:35px}.checklist h3{margin-top:0}.checklist label{display:block;font-size:12px;margin:20px 0 10px}.checklist select{width:100%;padding:13px;background:white;border:1px solid #bfc2c0;font-size:13px}.checklist .button{width:100%;margin-top:15px}.checklist #download-status{font-size:11px;margin-bottom:0}footer{border-top:1px solid var(--line);padding:35px 5%;display:flex;justify-content:space-between;gap:30px}footer p{font-size:12px;color:var(--muted);margin:0}footer>div{text-align:right}footer>div>a{font-size:12px}footer small{display:block;color:var(--muted);font-size:10px;line-height:1.8;margin-top:12px}@media(min-width:1500px){.section{padding-left:max(7%,calc((100vw - 1300px)/2));padding-right:max(7%,calc((100vw - 1300px)/2))}}@media(max-width:1000px){nav{gap:16px;font-size:11px}.hero{padding-top:35px}h1{letter-spacing:-2px}.actions{align-items:flex-start;flex-direction:column;gap:20px}.audience,.contact{gap:45px}.section{padding:70px 5%}.section-heading{gap:30px}.applications article{padding-right:20px}.applications article+article{padding-left:20px}.hero-bottom{gap:25px}}@media(max-width:700px){header{height:74px}.logo{font-size:28px}.menu{display:block;background:none;border:0;font-size:24px}nav{display:none;position:absolute;top:74px;left:0;right:0;padding:25px;background:white;flex-direction:column;align-items:stretch;font-size:15px}nav.open{display:flex}.hero{grid-template-columns:1fr;padding-top:30px}.hero h1{font-size:58px}.hero-content{padding-bottom:0}.hero-visual{padding:0}.actions{flex-direction:row;align-items:center;gap:20px;margin-bottom:15px}.text-link{max-width:115px;line-height:1.7}.hero-bottom{gap:15px;flex-wrap:wrap;font-size:10px}.hero-bottom 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.partner{display:flex;align-items:center;gap:35px;padding:30px 0;border-bottom:1px solid var(--line)}.partner img{width:155px;height:auto}.partner p{font-size:13px;color:var(--muted)}.selection{padding-top:65px;scroll-margin-top:110px}.selection>p:not(.eyebrow){max-width:850px;color:var(--muted);font-size:14px}.selection>h3,.document-library>h3{font-size:32px;margin:15px 0}.system-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:30px 0}.system-grid article{border:1px solid var(--line);padding:25px;display:flex;flex-direction:column}.system-grid h3{font-size:25px}.system-grid p{font-size:14px;color:var(--muted);flex:1}.system-grid a{font-size:12px;font-weight:700;border-top:1px solid var(--line);padding-top:18px}.technical-note{font-size:12px!important;color:var(--muted);line-height:1.7}.flex-feature{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin:65px 0;background:var(--paper);padding:25px;scroll-margin-top:110px}.flex-feature img{width:100%;height:auto}.flex-feature h3{font-size:30px;margin:10px 0}.flex-feature p:not(.eyebrow){font-size:13px;color:var(--muted)}.flex-feature .outline{display:inline-block;white-space:normal}.document-library{padding-top:30px;scroll-margin-top:110px}.document-library>p{font-size:14px;color:var(--muted)}.document-list{border-top:1px solid var(--line);margin-top:28px}.document-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0;border-bottom:1px solid var(--line);font-size:15px}.document-row>div{display:flex;gap:12px}.document-row a{border:1px solid var(--line);padding:9px 14px;font-size:12px;white-space:nowrap}.document-row a:hover,.outline:hover{border-color:var(--red);color:var(--red)}@media(max-width:800px){.system-grid{grid-template-columns:1fr}.flex-feature{grid-template-columns:1fr;gap:25px}.partner{flex-wrap:wrap;gap:10px}.document-row{align-items:flex-start;flex-direction:column;gap:15px}}
/* ARKTERA — approved identity, graphite / white / restrained red */
:root{--ink:#383837;--muted:#65645f;--paper:#f3f2ef;--line:#d9d8d3}body{font-family:Arial,Helvetica,sans-serif}header{background:var(--ink);color:#fff;height:94px;border-bottom:1px solid #ffffff26;padding:0 6%}.logo{display:block;line-height:0;letter-spacing:0}.logo img{display:block;width:205px;height:auto}nav{font-size:12px;gap:27px}.nav-cta{border-color:#777770}nav a:hover{color:#d7d6d0}.skip-link{position:fixed;left:20px;top:-80px;background:white;padding:15px;z-index:100}.skip-link:focus{top:10px}.hero{padding:0 0 0 6%;grid-template-columns:1.05fr 1fr;gap:0;position:relative;isolation:isolate}.hero-content{padding:62px 25px 46px 0;position:relative;z-index:2}.hero .eyebrow{font-size:10px;letter-spacing:2.6px;color:#d0cfc9;margin:0 0 38px}.hero h1{font-size:clamp(48px,5.1vw,84px);line-height:1.04;letter-spacing:-3.8px;margin:0 0 24px;font-weight:600}.lead{font-size:24px;font-weight:400;line-height:1.4;margin-bottom:18px;color:#f3f2ef}.hero-desc{font-size:14px;max-width:400px;color:#cfcec8}.actions{gap:24px;margin:30px 0 45px}.text-link{max-width:150px;line-height:1.6;color:#deddd7}.button{padding:18px 23px}.hero-partner{display:flex;gap:26px;align-items:center;border-top:1px solid #ffffff29;padding-top:23px;max-width:425px}.hero-partner span{font-size:9px;letter-spacing:1.4px;line-height:1.8;color:#c6c5be}.hero-partner img{width:127px;height:auto;filter:grayscale(1) invert(1);mix-blend-mode:screen}.architecture{margin:0;position:relative;min-height:650px;background:var(--red);clip-path:polygon(28% 0,100% 0,100% 100%,0 100%)}.architecture>img{width:100%;height:100%;position:absolute;inset:0;object-fit:cover;object-position:52% 50%;clip-path:polygon(calc(28% + 9px) 0,100% 0,100% 100%,9px 100%)}.architecture:after{content:"";position:absolute;inset:50% 0 0;background:linear-gradient(transparent,#0008);pointer-events:none}.architecture figcaption{position:absolute;bottom:26px;right:24px;z-index:1;font-size:9px;letter-spacing:1.5px;color:white}.hero-bottom{padding:24px 6% 24px 0;margin:0;gap:32px;border-color:#ffffff29}.hero-bottom a{font-size:11px;margin:0;color:#deddd7}.hero-bottom a:hover{color:white}.principle{display:grid;grid-template-columns:1.1fr 1fr .65fr;align-items:center;gap:55px;padding:37px 6%;border-bottom:1px solid var(--line);background:var(--paper)}.principle>p:first-child{font-size:22px;line-height:1.35;letter-spacing:-.5px}.principle strong{font-weight:500}.principle>p:nth-child(2){font-size:13px;color:var(--muted)}.principle>a{font-size:12px;display:flex;gap:25px;justify-content:flex-end}.section{padding:90px 6%}.section-heading{gap:50px}.eyebrow{letter-spacing:2.2px}h2{font-size:clamp(32px,3.2vw,48px);font-weight:500}.applications h3{font-size:29px}.applications article{padding-top:25px;padding-bottom:16px}.applications .number{display:inline-block;border-left:2px solid var(--red);padding-left:12px}.applications p{max-width:335px}.audience{gap:80px;background:var(--paper)}.product-panel{border-left:3px solid var(--red);background:var(--paper)}.system-grid article{border-width:1px 0 0;padding:25px 18px 20px 0}.system-grid article+article{padding-left:22px;border-left:1px solid var(--line)}.flex-feature{padding:40px;gap:50px}.document-library{padding-top:45px}.process{position:relative;overflow:hidden}.process:after{content:"";position:absolute;right:4%;top:0;width:2px;height:100%;background:#ffffff10;transform:skew(-17deg);pointer-events:none}.contact .checklist{border-top:3px solid var(--red)}footer{padding:38px 6%;background:var(--ink);color:white;border-color:#ffffff29}footer p,footer small{color:#c4c3bc}footer .logo img{width:180px}.technical-note{max-width:900px}.menu{color:white}summary:hover{color:var(--red)}
@media(min-width:1650px){.hero-content{padding-top:85px;padding-bottom:65px}.architecture{min-height:750px}}@media(max-width:1100px){nav{gap:17px;font-size:11px}.logo img{width:175px}.hero h1{letter-spacing:-2.5px}.hero-content{padding-top:45px}.architecture{min-height:630px}.hero .actions{flex-direction:column;align-items:flex-start;gap:18px}.hero .text-link{max-width:none}.principle{gap:25px}.hero-bottom{gap:20px}.hero-partner{gap:16px}.hero-partner span{font-size:8px}.hero-partner img{width:105px}}
@media(max-width:760px){header{height:76px}.menu{display:block}.logo img{width:166px}nav{display:none;top:76px;background:var(--ink);color:white;padding:25px 6%;font-size:15px}nav.open{display:flex}.hero{grid-template-columns:1fr;padding:0}.hero-content{padding:35px 6% 30px}.hero .eyebrow{margin-bottom:28px;font-size:9px}.hero h1{font-size:clamp(43px,9.5vw,64px);letter-spacing:-2.3px}.lead{font-size:21px}.hero-desc{max-width:440px}.hero .actions{flex-direction:row;align-items:center;gap:22px;margin-bottom:28px}.hero .text-link{max-width:130px}.hero-partner{max-width:100%;gap:35px}.hero-partner img{width:122px}.architecture{height:400px;min-height:0;clip-path:polygon(16% 0,100% 0,100% 100%,0 100%);margin-left:6%}.architecture>img{clip-path:polygon(calc(16% + 7px) 0,100% 0,100% 100%,7px 100%);object-position:50% 55%}.hero-bottom{padding:23px 6%;gap:17px}.hero-bottom span:first-child{width:100%;margin-bottom:6px}.hero-bottom a{font-size:10px}.principle{grid-template-columns:1fr;padding:28px 6%;gap:5px}.principle>p{margin:9px 0}.principle>a{justify-content:flex-start;margin-top:14px}.section{padding:57px 6%}.section-heading{grid-template-columns:1fr;gap:15px}.audience,.contact{grid-template-columns:1fr;gap:25px}.system-grid{grid-template-columns:1fr;gap:0}.system-grid article+article{padding-left:0;border-left:0}.flex-feature{padding:24px;gap:22px}.document-row>div{flex-wrap:wrap}.tabs{gap:20px}.tabs button{font-size:12px}.steps{gap:25px}.partner{gap:15px}.outline{white-space:normal}footer{gap:25px}footer>div{width:100%;text-align:left}}@media(min-width:761px) and (max-width:900px){nav{gap:11px}nav>a:nth-child(2){display:none}.hero-partner{flex-direction:column;align-items:flex-start}.hero h1{font-size:47px}.hero-bottom{gap:13px}.hero-bottom a{font-size:10px}}
/* Latest business-card identity: concrete stair / seamless CLT ceiling. */
.hero .lead{font-size:23px;max-width:450px;line-height:1.45}
.hero-partner{gap:25px;max-width:465px}
.hero-partner .partner-services{border-left:1px solid #ffffff65;padding-left:25px;color:#efeee8;font-size:9px;letter-spacing:1.2px}
.architecture{min-height:695px}
.architecture>img{object-position:50% 48%}
.architecture:after{inset:75% 0 0;background:linear-gradient(transparent,#0007)}
.manufacturer-plate{position:absolute;right:0;bottom:68px;z-index:2;background:#fff;color:var(--ink);padding:25px 31px 26px 28px;min-width:225px;border-left:1px solid #ddd}
.manufacturer-plate:before{content:"";position:absolute;left:17px;top:25px;bottom:26px;width:1px;background:var(--ink)}
.manufacturer-plate span{display:block;font-size:12px;line-height:1.6;margin-left:9px}
.manufacturer-plate img{display:block;width:161px;height:auto;margin:7px 0 7px 9px}
.process{isolation:isolate;padding-right:34%;min-height:480px}
.process-motif{position:absolute;right:0;top:0;width:31%;height:100%;object-fit:cover;object-position:center;clip-path:polygon(22% 0,100% 0,100% 100%,0 100%);opacity:.72;z-index:-1}
.process:after{right:30.5%;background:var(--red);width:5px;transform:skew(-8deg);z-index:-1}
.process .steps{grid-template-columns:repeat(2,1fr);gap:24px 32px;margin-top:36px}
.process h2{font-size:clamp(30px,3vw,43px)}
.process .steps h3{margin:14px 0 10px}
.process .steps p{margin-bottom:0}
@media(min-width:1650px){.architecture{min-height:750px}}
@media(max-width:1100px){.hero .lead{font-size:21px}.manufacturer-plate{min-width:198px;padding:21px 24px}.manufacturer-plate img{width:140px}.process{padding-right:31%}.process-motif{width:28%}.process:after{right:27.5%}}
@media(max-width:760px){.hero-partner{gap:24px}.hero-partner .partner-services{padding-left:20px;font-size:8px}.hero .lead{font-size:21px}.architecture{height:490px;min-height:0}.architecture>img{object-position:50% 52%}.manufacturer-plate{bottom:53px;padding:18px 24px;min-width:190px}.manufacturer-plate:before{top:18px;bottom:18px}.manufacturer-plate span{font-size:11px}.manufacturer-plate img{width:137px}.process{padding:57px 6% 305px}.process-motif{top:auto;bottom:0;width:100%;height:260px;object-position:50% 45%;opacity:.85;clip-path:polygon(12% 0,100% 0,100% 100%,0 100%)}.process:after{top:auto;bottom:0;right:auto;left:6%;height:260px;transform:skew(-10deg)}.process .steps{gap:24px}.architecture figcaption{font-size:8px;right:20px;bottom:23px}}
/* Project inquiry form */
.contact{grid-template-columns:minmax(250px,.8fr) minmax(0,1.5fr);gap:65px;align-items:start}
.contact-intro{position:sticky;top:130px}
.inquiry-form{min-width:0;padding:36px;border-top:3px solid var(--red)}
.inquiry-form .form-intro{font-size:13px;color:var(--muted);line-height:1.7}
.inquiry-form fieldset{border:0;padding:0;margin:30px 0 0;min-width:0}
.inquiry-form legend{font-size:10px;letter-spacing:1.8px;font-weight:700;text-transform:uppercase;border-top:1px solid var(--line);padding:20px 0 0;width:100%;margin-bottom:18px}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:19px 20px}
.inquiry-form .field{min-width:0}
.inquiry-form .field-wide{grid-column:1/-1}
.inquiry-form label{font-size:12px;line-height:1.5;margin:0 0 8px;display:block}
.inquiry-form input:not([type=hidden]),.inquiry-form select,.inquiry-form textarea{width:100%;max-width:100%;padding:12px;border:1px solid #bfc2c0;border-radius:0;background:#fff;color:var(--ink);font:inherit;font-size:14px;line-height:1.5}
.inquiry-form textarea{resize:vertical;min-height:120px}
.inquiry-form input::placeholder,.inquiry-form textarea::placeholder{color:#73736d;font-size:13px}
.inquiry-form input:focus-visible,.inquiry-form textarea:focus-visible{outline:2px solid var(--red);outline-offset:2px}
.inquiry-form .form-privacy{font-size:11px;line-height:1.7;color:var(--muted);margin:24px 0 8px}
.form-privacy a{text-decoration:underline;text-underline-offset:2px}
.inquiry-form .button{margin-top:17px;width:100%;text-align:left}
.inquiry-form .button:disabled{cursor:wait;opacity:.75}
.inquiry-form .form-status{font-size:12px;line-height:1.6;margin:12px 0 0;color:var(--muted)}
.form-trap{display:none!important}
@media(max-width:1000px){.contact{gap:32px;grid-template-columns:minmax(220px,.75fr) minmax(0,1.5fr)}.inquiry-form{padding:25px}.form-grid{grid-template-columns:1fr}.field-wide{grid-column:auto}}
@media(max-width:760px){.contact{grid-template-columns:1fr;gap:26px}.contact-intro{position:static}.inquiry-form{padding:24px 20px}.inquiry-form legend{line-height:1.5}.inquiry-form input:not([type=hidden]),.inquiry-form select,.inquiry-form textarea{font-size:16px}}