/* NANO TECH HOUSE LLC / PRODUCT DESIGN SITE V2 | STATIC, SELF-HOSTABLE */
:root{
 --night:#0e2231;--night-2:#162f41;--night-3:#243e50;--ink:#152c3a;--muted:#667a84;
 --stone:#f3f2ed;--canvas:#faf9f6;--white:#ffffff;--metal:#cdd8db;
 --warm:#e0ae78;--warm-2:#c58b55;--hair:#e2e6e5;
 --font:"Segoe UI","Noto Sans",Arial,Helvetica,sans-serif;
}
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dialog{border:1px solid #a4b7c3;box-shadow:0 30px 100px rgba(0,0,0,.35);width:min(940px,calc(100vw - 28px));max-height:94vh;padding:15px 16px 17px;background:#f0f4f4;color:#1b3a4c}dialog::backdrop{background:rgba(5,15,24,.84)}.dialog-header{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-bottom:9px;font:750 11px/1.4 Consolas,monospace;letter-spacing:.06em}.dialog-header button{background:#1a3d52;color:#fff;border:0;width:36px;height:36px;font-size:28px;line-height:1}.dialog-header button:hover{background:#315e78}dialog img{width:100%;max-height:75vh;object-fit:contain}dialog>p{font-size:12px;color:#667c87;margin-top:10px}
@media(max-width:1120px){.container{width:min(100% - 70px,1240px)}.header-inner{gap:20px}.brand{min-width:213px}.brand-type strong{font-size:13px}.navigation{gap:18px;font-size:12px}.hero-grid{gap:10px}.hero-copy{padding-right:2%}.hero h1{font-size:clamp(45px,5.2vw,68px)}.hero-lead{font-size:15px}.hero-stage{padding:15px}.stage-picture{min-height:245px}.engineering-layout{gap:25px}.engineering-details{padding-left:0}.about-grid{gap:35px}}
@media(max-width:850px){.container{width:calc(100% - 42px)}.header{height:79px}.navigation{position:absolute;display:none;top:79px;left:0;right:0;background:#fff;border-bottom:1px solid #e2e7e8;box-shadow:0 15px 22px rgba(14,30,41,.08);flex-direction:column;align-items:stretch;gap:0;padding:8px 21px 18px;white-space:normal}.navigation.open{display:flex}.navigation a{padding:13px 0;border-bottom:1px solid #e9eeed;font-size:14px}.navigation a::after{display:none}.menu-btn{display:flex}.hero-grid{grid-template-columns:1fr;min-height:auto;padding:59px 0 60px;gap:38px}.hero-copy{padding:0}.hero h1{font-size:clamp(45px,8vw,67px)}.hero-lead{max-width:620px}.hero-stamp{margin-top:35px}.hero-stage{max-width:690px;width:100%;margin:auto}.stage-picture{min-height:0}.hero-bottom{grid-template-columns:1fr 1fr 1fr}.hero-bottom div{gap:12px;padding:16px 12px 16px 0}.hero-bottom div+div{padding-left:13px}.hero-bottom span{font-size:11px}.section{padding:85px 0}.section-heading-line{display:block}.section-aside{max-width:630px;margin-top:20px}.pillars{gap:12px;margin-top:37px}.pillar{padding:20px;min-height:310px}.pillar h3{font-size:21px}.pillar-top svg{width:50px;height:50px}.engineering-head{display:block}.eng-deck{max-width:640px;margin-top:21px}.engineering-layout{grid-template-columns:1fr;gap:20px}.engineering-details{padding:19px 0}.about-grid{grid-template-columns:1fr;gap:35px}.about-card{max-width:620px}}
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@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}


/* V3: modular product architecture and project transparency */
.systems{background:#fff}.system-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:42px}.system-tile{display:flex;flex-direction:column;min-height:307px;background:#f3f4f1;border:1px solid #e2e8e7;padding:25px 23px 21px}.system-top{display:flex;align-items:start;justify-content:space-between;gap:10px;color:#8a9da5;font:760 10px/1.6 Consolas,monospace;letter-spacing:.065em}.system-glyph{font:400 43px/1 var(--font);color:#648294}.system-tile h3{font-size:21px;margin:30px 0 12px}.system-tile p{font-size:13px;line-height:1.8;color:#667983;flex:1}.system-foot{border-top:1px solid #d9e1df;padding-top:14px;margin-top:20px;font-size:9px;font-weight:800;letter-spacing:.06em;line-height:1.6;color:#417969}.system-foot.planned{color:#a6815b}.system-notice{margin-top:21px;padding:18px 20px 18px 22px;border-left:3px solid #bb8b56;background:#f8f4ed;font-size:13px;color:#60737f;line-height:1.8}
.faq-section{background:#f5f3ee}.faq-grid{display:grid;grid-template-columns:.76fr 1.24fr;gap:82px;align-items:start}.faq-heading h2{font-size:clamp(34px,4vw,52px);margin:21px 0}.faq-heading>p:last-child{color:#6c7c86;line-height:1.85;font-size:15px;max-width:320px}.faq-items{border-top:1px solid #d4dddb}.faq-items details{border-bottom:1px solid #d4dddb}.faq-items summary{cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 4px;font-size:17px;font-weight:700;letter-spacing:-.02em}.faq-items summary::-webkit-details-marker{display:none}.faq-items summary::marker{content:""}.faq-plus{font-size:25px;font-weight:350;color:#be8a55;transition:transform .15s}.faq-items details[open] .faq-plus{transform:rotate(45deg)}.faq-items details p{padding:0 45px 22px 4px;color:#6c7e86;font-size:14px;line-height:1.82}
@media(max-width:1120px){.navigation{gap:16px}.system-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.system-tile{min-height:260px}.faq-grid{gap:43px}}
@media(max-width:850px){.system-grid{gap:12px}.faq-grid{grid-template-columns:1fr;gap:24px}.faq-heading>p:last-child{max-width:610px}}
@media(max-width:580px){.system-grid{grid-template-columns:1fr;gap:11px;margin-top:27px}.system-tile{min-height:auto;padding:21px}.system-tile h3{margin-top:15px}.system-foot{margin-top:15px}.system-notice{font-size:12px}.faq-items summary{font-size:15px;padding:18px 0}.faq-items details p{font-size:13px;padding-right:15px}}