/* Zeratron design system — calibrated RF instrumentation */
:root{--bg:#0a0e0f;--panel:#101617;--panel-2:#151d1e;--line:#2b3838;--text:#eff3ee;--muted:#a3afab;--dim:#6e7d78;--signal:#c9ed63;--signal-soft:rgba(201,237,99,.12);--orange:#e17b49;--pad:clamp(20px,5vw,88px);--max:1280px;--mono:"Spline Sans Mono",ui-monospace,monospace;--sans:"Space Grotesk",Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 var(--sans);overflow-x:hidden}body:before{content:"";position:fixed;inset:0;pointer-events:none;z-index:20;opacity:.16;background:repeating-linear-gradient(0deg,transparent 0 3px,rgba(255,255,255,.08) 4px);mix-blend-mode:overlay}a{color:inherit}img{max-width:100%}button{font:inherit}::selection{background:var(--signal);color:var(--bg)}:focus-visible{outline:2px solid var(--signal);outline-offset:4px}
.shell{width:min(var(--max),100% - 2*var(--pad));margin:auto}.mono,.eyebrow,.kicker,.nav a,.button,.spec__freq,.footer,.meta{font-family:var(--mono);text-transform:uppercase;letter-spacing:.08em}.eyebrow{margin:0 0 18px;color:var(--signal);font-size:11px}.kicker{color:var(--dim);font-size:10px}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:.98;letter-spacing:-.05em}h1{font-size:clamp(42px,8vw,112px);max-width:11ch}h2{font-size:clamp(30px,4vw,58px);max-width:15ch}h3{font-size:21px}.lede{max-width:60ch;margin-top:26px;color:var(--muted);font-size:clamp(17px,2vw,21px)}
/* navigation */.site-header{position:sticky;top:0;z-index:10;height:76px;border-bottom:1px solid transparent;transition:.25s;background:linear-gradient(to bottom,rgba(10,14,15,.94),rgba(10,14,15,.7))}.site-header.is-scrolled{border-color:var(--line);backdrop-filter:blur(14px)}.nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:700;letter-spacing:-.04em}.brand img{width:31px;height:31px;object-fit:contain}.nav-links{display:flex;align-items:center;gap:27px}.nav-links a{font-size:10px;text-decoration:none;color:var(--muted);transition:color .2s}.nav-links a:hover,.nav-links a[aria-current=page]{color:var(--signal)}.nav-toggle{display:none;width:44px;height:44px;background:none;border:0;color:var(--text);padding:10px}.nav-toggle i,.nav-toggle:before,.nav-toggle:after{content:"";display:block;height:1px;background:currentColor;margin:6px 0;transition:.2s}.nav-open{overflow:hidden}
/* shared */.page-head{padding:clamp(70px,12vw,160px) 0 clamp(64px,9vw,120px);border-bottom:1px solid var(--line);background-image:linear-gradient(rgba(201,237,99,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(201,237,99,.04) 1px,transparent 1px);background-size:48px 48px}.section{padding:clamp(70px,10vw,140px) 0;border-bottom:1px solid var(--line)}.section-grid{display:grid;grid-template-columns:170px 1fr;gap:38px}.section-copy{max-width:700px}.section-copy>p{margin-top:22px;color:var(--muted);font-size:18px}.button{display:inline-flex;align-items:center;justify-content:center;gap:12px;margin-top:30px;min-height:48px;padding:0 19px;background:var(--signal);color:#101410;text-decoration:none;font-weight:700;font-size:11px;transition:transform .2s,background .2s;box-shadow:inset 0 -2px rgba(0,0,0,.18)}.button:hover{transform:translateY(-2px);background:#d8fa78}.button--ghost{background:transparent;color:var(--text);border:1px solid var(--line);box-shadow:none}.button--ghost:hover{background:var(--panel-2)}.footer{padding:32px 0;color:var(--dim);font-size:10px}.footer .shell{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}.footer a{text-decoration:none;color:var(--muted)}
/* home */.hero{min-height:calc(100svh - 76px);position:relative;display:grid;align-items:end;padding:80px 0 56px;overflow:hidden;border-bottom:1px solid var(--line)}.hero canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.85}.hero-content{position:relative}.hero h1{max-width:10ch}.hero .lede{max-width:47ch}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.hero-status{position:absolute;bottom:22px;right:0;color:var(--signal);font:10px var(--mono);letter-spacing:.1em}.hero-status:before{content:"";display:inline-block;width:7px;height:7px;background:var(--signal);border-radius:50%;margin-right:8px;box-shadow:0 0 13px var(--signal)}.intro{display:grid;grid-template-columns:1fr 1.3fr;gap:60px;align-items:start}.intro p{font-size:clamp(19px,2.3vw,29px);color:var(--muted);line-height:1.35}.intro strong{color:var(--text);font-weight:500}.system-grid{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line)}.system-card{min-height:290px;padding:27px;position:relative;text-decoration:none;border-right:1px solid var(--line);background:var(--panel);transition:background .25s}.system-card:last-child{border:0}.system-card:hover{background:var(--panel-2)}.system-card:after{content:"↗";position:absolute;right:25px;bottom:20px;color:var(--signal);font-size:23px}.system-card p{margin-top:52px;max-width:25ch;color:var(--muted)}
/* data panels */.process{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);margin-top:40px}.process>div{background:var(--panel);padding:25px;min-height:180px}.process strong{display:block;margin:26px 0 8px;font-size:17px}.process p,.card p{color:var(--muted);font-size:14px}.num{font:11px var(--mono);color:var(--signal)}.image-panel{margin-top:38px;border:1px solid var(--line);background:var(--panel)}.image-panel img{display:block;width:100%;max-height:600px;object-fit:contain}.image-panel figcaption{padding:12px 16px;color:var(--dim);font:10px var(--mono);letter-spacing:.08em;text-transform:uppercase}.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:38px}.card{padding:27px;background:var(--panel);border:1px solid var(--line);border-radius:12px;transition:border .2s,transform .2s}.card:hover{border-color:#546760;transform:translateY(-2px)}.card h3{margin:20px 0 12px}.card .num{color:var(--signal)}
/* spectrum */.band-map{display:grid;gap:10px;margin-top:42px}.band{display:grid;grid-template-columns:130px 1fr 130px;align-items:center;gap:24px;padding:20px;border:1px solid var(--line);background:var(--panel);cursor:default;transition:.2s}.band:hover,.band:focus-within{border-color:var(--signal);background:var(--panel-2)}.band-bar{height:9px;background:repeating-linear-gradient(90deg,var(--signal) 0 6px,transparent 6px 11px);box-shadow:0 0 20px var(--signal-soft)}.band:nth-child(2) .band-bar{width:64%;background-color:var(--orange)}.band:nth-child(3) .band-bar{width:82%}.band:nth-child(4) .band-bar{width:45%;background-color:var(--orange)}.spec__freq{font-size:12px;color:var(--signal)}.cad{margin-top:40px;display:grid;grid-template-columns:1.2fr .8fr;gap:20px}.cad-stage{background:var(--panel);border:1px solid var(--line);min-height:420px;display:grid;place-items:center;overflow:hidden}.cad-stage img{width:100%;height:100%;object-fit:contain;transition:opacity .3s}.cad-copy{padding:32px;background:var(--panel);border:1px solid var(--line)}
/* team, careers, contact */.people{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:42px}.person{background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow:hidden}.person img{width:100%;aspect-ratio:4/4.4;object-fit:cover;filter:grayscale(1);transition:filter .3s}.person:hover img{filter:grayscale(0)}.person-body{padding:20px}.person .meta{margin-top:8px;color:var(--signal);font-size:10px;line-height:1.7}.founder-note{margin-top:34px;padding:34px;border-left:2px solid var(--signal);background:var(--panel);max-width:850px;font-size:clamp(18px,2vw,24px);line-height:1.45}.roles{margin-top:38px}.role{border:1px solid var(--line);background:var(--panel);margin-bottom:10px;border-radius:10px}.role summary{cursor:pointer;list-style:none;padding:25px;display:flex;align-items:center;justify-content:space-between;gap:20px}.role summary::-webkit-details-marker{display:none}.role summary:after{content:"+";font:26px var(--mono);color:var(--signal)}.role[open] summary:after{content:"−"}.role-body{padding:0 25px 27px;color:var(--muted);max-width:760px}.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:42px}.contact-card{padding:28px;background:var(--panel);border:1px solid var(--line);border-radius:12px;min-height:190px}.contact-card h3{margin:20px 0 12px}.contact-card a{color:var(--signal);text-decoration:none;overflow-wrap:anywhere}
@media(max-width:720px){:root{--pad:20px}.nav-links{position:fixed;top:76px;left:0;right:0;bottom:0;background:var(--bg);display:flex;flex-direction:column;align-items:stretch;padding:32px 20px;gap:0;transform:translateX(100%);transition:transform .25s;border-top:1px solid var(--line)}.nav-links.is-open{transform:translateX(0)}.nav-links a{padding:18px 0;border-bottom:1px solid var(--line);font-size:14px}.nav-toggle{display:block}.section-grid,.intro,.cad{grid-template-columns:1fr;gap:22px}.page-head{padding:74px 0}.hero{min-height:650px;padding-bottom:78px}.hero h1{font-size:clamp(46px,14vw,72px)}.hero-status{left:0;right:auto}.system-grid,.process{grid-template-columns:1fr}.system-card{min-height:200px;border-right:0;border-bottom:1px solid var(--line)}.system-card:last-child{border-bottom:0}.card-grid,.people,.contact-grid{grid-template-columns:1fr}.band{grid-template-columns:1fr;gap:11px}.band-bar{width:100%!important}.section-copy>p{font-size:16px}.founder-note{padding:24px}.footer .shell{display:block}.footer span{display:block;margin:8px 0}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}
.discovery{height:240vh;position:relative;border-bottom:1px solid var(--line)}.discovery__pin{height:100svh;position:sticky;top:0;overflow:hidden;background:var(--bg)}.discovery canvas{position:absolute;inset:0;width:100%;height:100%;display:block}.discovery__copy{position:relative;padding-top:clamp(70px,12vh,130px);pointer-events:none}.discovery__copy h2{max-width:12ch}.discovery__copy p:last-child{margin-top:18px;color:var(--muted)}.discovery__readout{position:absolute;z-index:1;bottom:25px;left:var(--pad);color:var(--signal);font:10px var(--mono);letter-spacing:.08em}.discovery__readout:after{content:"";display:inline-block;margin-left:9px;width:6px;height:6px;background:var(--signal);border-radius:50%}@media(max-width:720px){.discovery{height:190vh}.discovery__copy{padding-top:75px}.discovery__readout{bottom:18px}}
.company-name{white-space:nowrap}.brand{font-size:18px;font-weight:500;letter-spacing:.015em}.brand img{width:28px;height:28px;object-fit:contain}
@media(max-width:720px){.discovery__copy h2{font-size:clamp(32px,10vw,46px);max-width:9ch}.discovery__copy p:last-child{max-width:22ch;font-size:14px}.discovery__readout{font-size:8px}}