/* OrbitalX — HALO platform site
   Tokens: pure black field, off-white ink, xenon-plasma blue as the single signal colour.
   Type: Archivo across widths — expanded for display, normal width for reading. */
@font-face{font-family:"Archivo";src:url("../fonts/archivo-var.woff2") format("woff2");font-weight:100 900;font-stretch:62% 125%;font-style:normal;font-display:swap}
:root{
  --void:#000;
  --panel:#07090c;
  --ink:#eceef1;
  --dim:#8b919a;
  --faint:#4a4f57;
  --rule:rgba(236,238,241,.14);
  --rule-strong:rgba(236,238,241,.32);
  --plasma:#8fb3ff;
  --warn:#ffb86b;
  --gutter:clamp(20px,4vw,56px);
  --maxw:1440px;
  --head:64px;
  --f:"Archivo",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--head) + 16px)}
body{margin:0;background:var(--void);color:var(--ink);font-family:var(--f);font-size:17px;line-height:1.6;font-variation-settings:"wdth" 100;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,video,svg,canvas{display:block;max-width:100%}
a{color:inherit}
p{margin:0 0 1.1em}
h1,h2,h3,h4{margin:0;font-weight:400}
::selection{background:var(--plasma);color:#000}
:focus-visible{outline:2px solid var(--plasma);outline-offset:3px}
.skip{position:absolute;left:-9999px;top:8px;z-index:200;background:var(--ink);color:#000;padding:10px 14px;text-decoration:none}
.skip:focus{left:8px}
.vh{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--gutter);position:relative}
.section{padding-block:clamp(88px,11vw,176px);position:relative}
.section.tight{padding-block:clamp(56px,7vw,112px)}
.rule-top{border-top:1px solid var(--rule)}

/* faint structural column lines behind the page */
.columns{position:fixed;inset:0;pointer-events:none;z-index:0}
.columns .wrap{height:100%;display:grid;grid-template-columns:repeat(4,1fr)}
.columns span{border-left:1px solid rgba(236,238,241,.045)}
.columns span:last-child{border-right:1px solid rgba(236,238,241,.045)}
main,footer{position:relative;z-index:1}

/* ---------- type ---------- */
.display{font-size:clamp(3.6rem,10.5vw,10rem);line-height:.9;letter-spacing:-.035em;font-variation-settings:"wdth" 125;font-weight:380}
.h2{font-size:clamp(2rem,4.6vw,4rem);line-height:1.02;letter-spacing:-.025em;font-variation-settings:"wdth" 118;font-weight:380}
.h3{font-size:clamp(1.25rem,1.8vw,1.6rem);line-height:1.2;letter-spacing:-.01em;font-variation-settings:"wdth" 112;font-weight:450}
.statement{font-size:clamp(1.6rem,3.3vw,3rem);line-height:1.14;letter-spacing:-.018em;font-variation-settings:"wdth" 108;font-weight:340;max-width:28ch;margin:0}
.lede{font-size:clamp(1.125rem,1.5vw,1.35rem);line-height:1.5;color:var(--ink);max-width:42ch}
.prose{max-width:66ch;color:#c9cdd3}
.prose h3{color:var(--ink);margin:2.2em 0 .6em}
.prose h3:first-child{margin-top:0}
.prose strong{color:var(--ink);font-weight:550}
.prose ul{padding-left:1.1em;margin:0 0 1.2em}
.prose li{margin-bottom:.45em}
.prose li::marker{color:var(--plasma)}
.prose a{color:var(--plasma);text-underline-offset:3px}
.muted{color:var(--dim)}
.readout{font-size:.8125rem;line-height:1.4;color:var(--dim);font-variant-numeric:tabular-nums;letter-spacing:.01em}
.readout b{color:var(--ink);font-weight:500}

/* ---------- corner-bracket frame ---------- */
.frame{position:relative;background:var(--panel)}
.frame::after{content:"";position:absolute;inset:0;pointer-events:none;z-index:2;--c:var(--ink);--l:14px;
  background:
   linear-gradient(var(--c),var(--c)) top left/var(--l) 1px no-repeat,
   linear-gradient(var(--c),var(--c)) top left/1px var(--l) no-repeat,
   linear-gradient(var(--c),var(--c)) top right/var(--l) 1px no-repeat,
   linear-gradient(var(--c),var(--c)) top right/1px var(--l) no-repeat,
   linear-gradient(var(--c),var(--c)) bottom left/var(--l) 1px no-repeat,
   linear-gradient(var(--c),var(--c)) bottom left/1px var(--l) no-repeat,
   linear-gradient(var(--c),var(--c)) bottom right/var(--l) 1px no-repeat,
   linear-gradient(var(--c),var(--c)) bottom right/1px var(--l) no-repeat}
.frame.inset::after{inset:clamp(12px,2vw,24px);--l:20px}
.frame img,.frame video{width:100%;height:100%;object-fit:cover}
.media{aspect-ratio:16/10;overflow:hidden}
.media.wide{aspect-ratio:21/9}
@media (max-width:700px){.media.wide{aspect-ratio:4/3}}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:12px;border:1px solid var(--rule-strong);background:transparent;color:var(--ink);font:inherit;font-size:.9375rem;font-weight:500;padding:14px 22px;text-decoration:none;cursor:pointer;transition:background .2s,color .2s,border-color .2s}
.btn:hover{background:var(--ink);color:#000;border-color:var(--ink)}
.btn.solid{background:var(--ink);color:#000;border-color:var(--ink)}
.btn.solid:hover{background:var(--plasma);border-color:var(--plasma)}
.btn svg{width:12px;height:12px}
.btn[disabled]{opacity:.6;cursor:progress}

/* ---------- header ---------- */
.site-head{position:fixed;top:0;left:0;right:0;height:var(--head);z-index:50;transition:background .3s,border-color .3s;border-bottom:1px solid transparent}
.site-head.scrolled{background:rgba(0,0,0,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-color:var(--rule)}
.site-head .wrap{height:100%;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;text-decoration:none;flex:none;min-height:30px}
.brand img{height:30px;width:auto}
.head-telemetry{display:flex;gap:16px;align-items:center}
.live-dot{width:6px;height:6px;border-radius:50%;background:var(--plasma);animation:pulse 2.4s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(143,179,255,.55)}70%{box-shadow:0 0 0 8px rgba(143,179,255,0)}100%{box-shadow:0 0 0 0 rgba(143,179,255,0)}}
.nav{margin-left:auto;display:flex;align-items:center;gap:24px}
.nav a{font-size:.9375rem;text-decoration:none;color:#c9cdd3;position:relative;padding-block:6px}
.nav a:hover,.nav a[aria-current="page"]{color:var(--ink)}
.nav a[aria-current="page"]::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--plasma)}
.nav .btn{padding:9px 16px;color:var(--ink)}
.nav .btn:hover{color:#000}
.nav .btn[aria-current="page"]::after{display:none}
.icon-btn{width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--rule);background:none;color:var(--ink);cursor:pointer;padding:0;flex:none}
.icon-btn:hover{border-color:var(--rule-strong)}
.icon-btn svg{width:16px;height:16px}
.menu-btn{display:none}
.sound-btn{margin-left:0}
.sound-btn .on{display:none}
.sound-btn[aria-pressed="true"] .on{display:block}
.sound-btn[aria-pressed="true"] .off{display:none}
@media (max-width:1280px){
  .nav{display:none}
  .menu-btn{display:grid}
  .sound-btn{margin-left:auto}
}
@media (max-width:620px){.head-telemetry{display:none}}

/* mobile menu */
.menu-panel{position:fixed;inset:0;z-index:60;background:#000;display:flex;flex-direction:column;padding:calc(var(--head) + 24px) var(--gutter) 40px;transform:translateY(-100%);transition:transform .45s cubic-bezier(.7,0,.2,1);visibility:hidden;overflow-y:auto}
.menu-panel.open{transform:none;visibility:visible}
.menu-panel a{font-size:clamp(2rem,8vw,3.5rem);font-variation-settings:"wdth" 120;letter-spacing:-.02em;text-decoration:none;padding:.18em 0;border-bottom:1px solid var(--rule)}
.menu-panel .close{position:absolute;top:13px;right:var(--gutter)}
.menu-panel .foot{margin-top:auto;padding-top:24px}

/* ---------- home hero ---------- */
.hero{position:relative;height:100svh;min-height:640px;overflow:hidden;background:#000}
.hero video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.8}
.hero::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(0,0,0,.55) 0%,rgba(0,0,0,0) 26%,rgba(0,0,0,0) 45%,rgba(0,0,0,.94) 100%)}
.hero.frame::after{inset:calc(var(--head) + 8px) var(--gutter) 28px;--l:22px;--c:rgba(236,238,241,.7)}
.hero>.wrap{position:relative;z-index:3;height:100%;display:flex;flex-direction:column;justify-content:flex-end;padding-bottom:clamp(64px,9vh,104px)}
.hero h1,.hero-foot{padding-left:clamp(0px,1.5vw,24px)}
.hero h1 .display{display:block}
.h1-sub{display:block;margin-top:clamp(20px,2.5vw,32px);font-size:clamp(1rem,1.4vw,1.25rem);line-height:1.45;max-width:46ch;color:#d5d8dc;font-variation-settings:"wdth" 100;letter-spacing:0;font-weight:400}
.hero-foot{display:flex;justify-content:space-between;align-items:flex-end;gap:28px;flex-wrap:wrap;margin-top:clamp(28px,4vw,48px)}
.spec-inline{display:flex;gap:clamp(20px,3vw,44px);margin:0;flex-wrap:wrap}
.spec-inline div{border-left:1px solid var(--rule-strong);padding-left:12px}
.spec-inline dt{font-size:.75rem;color:var(--dim)}
.spec-inline dd{margin:2px 0 0;font-size:.9375rem}
@media (prefers-reduced-motion:no-preference){
  .hero .display .ln{display:block;overflow:hidden;padding-bottom:.04em}
  .hero .display .ln>span{display:block;transform:translateY(108%);animation:rise 1.1s cubic-bezier(.2,.8,.1,1) forwards}
  .hero .display .ln:nth-child(2)>span{animation-delay:.12s}
  .hero .h1-sub,.hero-foot{opacity:0;animation:fade .9s .55s ease forwards}
  .hero.frame::after{opacity:0;animation:fade 1.2s .2s ease forwards}
}
@keyframes rise{to{transform:none}}
@keyframes fade{to{opacity:1}}

/* ---------- sub-page hero ---------- */
.page-hero{padding-top:calc(var(--head) + clamp(48px,8vw,112px))}
.crumbs{display:flex;gap:10px;align-items:center;margin:0 0 clamp(28px,4vw,48px);list-style:none;padding:0;flex-wrap:wrap}
.crumbs li+li::before{content:"/";margin-right:10px;color:var(--faint)}
.crumbs a{text-decoration:none}
.crumbs a:hover{color:var(--ink)}
.page-hero .grid{display:grid;grid-template-columns:1fr;gap:clamp(28px,4vw,48px)}
.page-hero .display{font-size:clamp(2.5rem,8.6vw,8.25rem);display:block;overflow-wrap:break-word}
.page-hero .h1-sub{color:var(--dim)}
@media (min-width:960px){.page-hero .grid{grid-template-columns:1.35fr 1fr;align-items:end}}
.page-hero .media{margin-top:clamp(48px,7vw,96px)}

/* ---------- statement ---------- */
.statement-block{display:grid;gap:28px}
@media (min-width:960px){.statement-block{grid-template-columns:1fr 3fr}}

/* ---------- process slider ---------- */
.slider-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:clamp(32px,4vw,56px);flex-wrap:wrap}
.slider-ctrl{display:flex;gap:8px;align-items:center}
.slider-ctrl .readout{margin-right:12px;min-width:5ch;text-align:right}
.track{display:grid;grid-auto-flow:column;grid-auto-columns:min(82vw,920px);gap:clamp(16px,2vw,28px);overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding-inline:var(--gutter);scroll-padding-inline:var(--gutter);margin:0;list-style:none}
.track::-webkit-scrollbar{display:none}
.track-outer{max-width:calc(var(--maxw));margin:0 auto}
.slide{scroll-snap-align:start}
.slide .body{display:grid;grid-template-columns:auto 1fr;gap:8px 20px;margin-top:22px;max-width:62ch}
.slide .step{font-variant-numeric:tabular-nums;color:var(--plasma);font-size:.875rem;padding-top:.3em}
.slide p{color:#c3c7cd;grid-column:2;margin:0}

/* ---------- triad ---------- */
.triad{display:grid;grid-template-columns:1fr;border-top:1px solid var(--rule)}
.triad>div{padding:32px 0 8px}
.triad p{color:#c3c7cd;max-width:40ch;margin-top:14px}
@media (min-width:860px){
  .triad{grid-template-columns:repeat(3,1fr)}
  .triad>div{padding:36px 32px 8px 0}
  .triad>div+div{padding-left:32px;border-left:1px solid var(--rule)}
}

/* ---------- geometry comparison ---------- */
.compare{display:grid;gap:clamp(16px,2vw,28px);grid-template-columns:1fr}
@media (min-width:860px){.compare{grid-template-columns:1fr 1fr}}
.compare .frame{padding:clamp(20px,3vw,36px);display:flex;flex-direction:column;gap:24px}
.compare svg{width:100%;height:auto;max-height:240px}
.compare .tag{display:flex;justify-content:space-between;gap:12px}
.compare .is-halo::after{--c:var(--plasma)}
.metrics{margin:0;display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--rule);gap:12px}
.metrics div{padding-top:14px}
.metrics dt{font-size:.75rem;color:var(--dim);line-height:1.3;min-height:2.6em}
.metrics dd{margin:6px 0 0;font-size:clamp(1.4rem,2.6vw,2.2rem);font-variation-settings:"wdth" 115;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.metrics dd small{font-size:.5em;color:var(--dim);margin-left:3px;letter-spacing:0}
.note{font-size:.8125rem;color:var(--dim);max-width:80ch;margin-top:20px}

/* ---------- orbit explorer ---------- */
.orbit{display:grid;gap:clamp(28px,4vw,64px);grid-template-columns:1fr;align-items:center}
@media (min-width:960px){.orbit{grid-template-columns:1.05fr 1fr}}
.orbit .stage{aspect-ratio:1/1}
.orbit canvas{width:100%;height:100%}
.tabs{display:flex;border:1px solid var(--rule);width:max-content;max-width:100%;margin-bottom:28px}
.tabs button{background:none;border:0;color:var(--dim);font:inherit;font-size:.9375rem;padding:10px 18px;cursor:pointer;font-variation-settings:"wdth" 112}
.tabs button+button{border-left:1px solid var(--rule)}
.tabs button[aria-selected="true"]{background:var(--ink);color:#000}
.tabs button:hover:not([aria-selected="true"]){color:var(--ink)}
.datalist{margin:0 0 28px;display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--rule)}
.datalist div{padding:16px 0;border-bottom:1px solid var(--rule)}
.datalist div:nth-child(odd){padding-right:16px}
.datalist div:nth-child(even){padding-left:16px;border-left:1px solid var(--rule)}
.datalist dt{font-size:.75rem;color:var(--dim)}
.datalist dd{margin:6px 0 0;font-size:clamp(1.25rem,2vw,1.75rem);font-variation-settings:"wdth" 112;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.datalist dd.txt{font-size:1rem;letter-spacing:0;font-variation-settings:"wdth" 100;line-height:1.4}

/* ---------- technology index ---------- */
.index{border-top:1px solid var(--rule);list-style:none;margin:0;padding:0}
.index li{border-bottom:1px solid var(--rule)}
.index a{display:grid;grid-template-columns:1fr;gap:10px 32px;padding:clamp(22px,3vw,36px) 0;text-decoration:none;align-items:center}
.index .name{font-size:clamp(1.75rem,4vw,3.25rem);line-height:1;letter-spacing:-.025em;font-variation-settings:"wdth" 120;transition:color .25s,transform .35s cubic-bezier(.2,.8,.1,1)}
.index .desc{color:var(--dim);max-width:46ch}
.index .go{display:none}
.index a:hover .name{color:var(--plasma);transform:translateX(8px)}
@media (min-width:860px){
  .index a{grid-template-columns:1.2fr 1fr 44px}
  .index .go{display:grid;place-items:center;width:44px;height:44px;border:1px solid var(--rule);transition:background .25s,border-color .25s,color .25s}
  .index a:hover .go{background:var(--ink);color:#000;border-color:var(--ink)}
  .index .go svg{width:14px;height:14px}
}

/* ---------- two-column deep dive ---------- */
.deep{display:grid;gap:24px 64px;grid-template-columns:1fr}
.deep+.deep{margin-top:clamp(72px,9vw,128px)}
@media (min-width:960px){
  .deep{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
  .deep>header{position:sticky;top:calc(var(--head) + 32px);align-self:start}
}
.deep>header p{color:var(--dim);margin-top:18px;max-width:34ch}

/* ---------- spec table ---------- */
.spec{margin:0;border-top:1px solid var(--rule)}
.spec div{display:grid;grid-template-columns:minmax(120px,1fr) 2fr;gap:24px;padding:16px 0;border-bottom:1px solid var(--rule)}
.spec dt{color:var(--dim);font-size:.9375rem}
.spec dd{margin:0}
.key .spec div{grid-template-columns:40px 1fr}
.key .spec dt{color:var(--plasma)}

/* ---------- interactive tool panels ---------- */
.tool{padding:clamp(22px,3vw,40px)}
.tool-grid{display:grid;gap:clamp(24px,3vw,48px);grid-template-columns:1fr}
@media (min-width:900px){.tool-grid{grid-template-columns:1fr 1fr}}
.tool h3{margin-bottom:22px}
.field{margin-bottom:20px}
.field label{display:flex;justify-content:space-between;font-size:.875rem;color:var(--dim);margin-bottom:8px}
.field label output{color:var(--ink);font-variant-numeric:tabular-nums}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:24px;background:transparent;cursor:pointer;margin:0}
input[type=range]::-webkit-slider-runnable-track{height:1px;background:var(--rule-strong)}
input[type=range]::-moz-range-track{height:1px;background:var(--rule-strong)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;margin-top:-7px;background:var(--ink);border:0;border-radius:0}
input[type=range]::-moz-range-thumb{width:14px;height:14px;background:var(--ink);border:0;border-radius:0}
input[type=range]:focus-visible{outline:none}
input[type=range]:focus-visible::-webkit-slider-thumb{box-shadow:0 0 0 3px var(--plasma)}
input[type=range]:focus-visible::-moz-range-thumb{box-shadow:0 0 0 3px var(--plasma)}
.bars{display:grid;gap:20px}
.bar-row .top{display:flex;justify-content:space-between;gap:12px;font-size:.875rem;color:var(--dim);margin-bottom:8px}
.bar-row .top b{color:var(--ink);font-weight:500;font-variant-numeric:tabular-nums;white-space:nowrap}
.bar{height:10px;background:rgba(236,238,241,.07);position:relative;overflow:hidden}
.bar i{position:absolute;inset:0 auto 0 0;background:var(--dim);transition:width .35s cubic-bezier(.2,.8,.1,1)}
.bar.plasma i{background:var(--plasma)}
.tool canvas{width:100%;height:auto;aspect-ratio:2/1}
.big-readout{font-size:clamp(2.25rem,4.5vw,3.75rem);font-variation-settings:"wdth" 118;letter-spacing:-.03em;line-height:1;font-variant-numeric:tabular-nums;margin:6px 0 22px}
.big-readout small{font-size:.4em;color:var(--dim);letter-spacing:0;margin-left:6px}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--rule)}
.faq details{border-bottom:1px solid var(--rule)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:24px;padding:22px 0;font-size:clamp(1.05rem,1.4vw,1.25rem);font-variation-settings:"wdth" 108}
.faq summary::-webkit-details-marker{display:none}
.faq summary .pm{flex:none;width:14px;height:14px;position:relative;margin-top:.4em}
.faq summary .pm::before,.faq summary .pm::after{content:"";position:absolute;background:var(--ink);transition:transform .3s}
.faq summary .pm::before{left:0;right:0;top:50%;height:1px}
.faq summary .pm::after{top:0;bottom:0;left:50%;width:1px}
.faq details[open] .pm::after{transform:scaleY(0)}
.faq .a{padding:0 0 24px;color:#c3c7cd;max-width:66ch}

/* ---------- phases ---------- */
.phases{list-style:none;margin:0;padding:0;border-top:1px solid var(--rule);counter-reset:ph}
.phases li{display:grid;grid-template-columns:56px 1fr;gap:4px 20px;padding:26px 0;border-bottom:1px solid var(--rule);counter-increment:ph}
.phases li::before{content:counter(ph,decimal-leading-zero);color:var(--plasma);font-variant-numeric:tabular-nums;font-size:.875rem;padding-top:.35em;grid-row:span 2}
.phases h3{font-size:1.25rem;font-variation-settings:"wdth" 112}
.phases p{margin:6px 0 0;color:#c3c7cd;max-width:60ch}

/* ---------- layer stack ---------- */
.stack{display:grid;gap:6px}
.stack a{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center;padding:18px 22px;border:1px solid var(--rule);text-decoration:none;transition:border-color .25s,background .25s}
.stack a:hover{border-color:var(--plasma);background:rgba(143,179,255,.05)}
.stack b{font-weight:500;font-variation-settings:"wdth" 112}
.stack span{color:var(--dim);font-size:.875rem;text-align:right}

/* ---------- media pair ---------- */
.pair{display:grid;gap:clamp(16px,2vw,28px);grid-template-columns:1fr}
@media (min-width:860px){.pair{grid-template-columns:1fr 1fr}}
figure{margin:0}
figcaption{margin-top:12px}

/* ---------- CTA + footer ---------- */
.cta{display:grid;gap:32px;align-items:end}
@media (min-width:960px){.cta{grid-template-columns:2fr 1fr}.cta .act{justify-self:end}}
.site-foot{border-top:1px solid var(--rule);padding-top:clamp(72px,10vw,144px);background:#000}
.foot-line{font-size:clamp(2.75rem,8.5vw,8rem);line-height:.92;letter-spacing:-.035em;font-variation-settings:"wdth" 125;font-weight:380;max-width:14ch;margin:0}
.foot-grid{display:grid;gap:40px 32px;grid-template-columns:repeat(2,1fr);padding-block:clamp(48px,6vw,80px);border-bottom:1px solid var(--rule);margin-top:clamp(56px,7vw,96px);border-top:1px solid var(--rule)}
@media (min-width:960px){.foot-grid{grid-template-columns:repeat(4,1fr)}}
.foot-grid h2{font-size:.8125rem;color:var(--dim);margin-bottom:14px}
.foot-grid ul{list-style:none;margin:0;padding:0}
.foot-grid li{margin-bottom:8px}
.foot-grid a{text-decoration:none;color:#c9cdd3}
.foot-grid a:hover{color:var(--ink)}
.foot-grid address{font-style:normal;color:#c9cdd3}
.foot-base{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-block:24px 32px}
.linkish{background:none;border:0;color:var(--dim);font:inherit;cursor:pointer;padding:0;text-decoration:underline;text-underline-offset:3px}
.linkish:hover{color:var(--ink)}

/* ---------- contact form ---------- */
.contact-grid{display:grid;gap:clamp(40px,6vw,96px);grid-template-columns:1fr}
@media (min-width:960px){.contact-grid{grid-template-columns:1fr 1.4fr}}
.form{display:grid;gap:8px 28px;grid-template-columns:1fr;position:relative}
@media (min-width:700px){.form{grid-template-columns:1fr 1fr}.form .full{grid-column:1/-1}}
.ff{display:flex;flex-direction:column;gap:6px;padding:18px 0 10px;border-bottom:1px solid var(--rule-strong);transition:border-color .2s}
.ff:focus-within{border-color:var(--plasma)}
.ff label{font-size:.8125rem;color:var(--dim)}
.ff input,.ff select,.ff textarea{background:transparent;border:0;color:var(--ink);font:inherit;font-size:1.0625rem;padding:4px 0;outline:none;width:100%;resize:vertical}
.ff select option{background:#0a0c10}
.ff.err{border-color:var(--warn)}
.ff .msg{font-size:.8125rem;color:var(--warn)}
.ff .msg:empty{display:none}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-foot{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-top:24px}
.form-status{margin:0;font-size:.9375rem}
.form-status.ok{color:var(--plasma)}
.form-status.bad{color:var(--warn)}
.consent-note{font-size:.8125rem;color:var(--dim);max-width:60ch;margin-top:16px}
.contact-lines{margin:0}
.contact-lines div{padding:18px 0;border-bottom:1px solid var(--rule)}
.contact-lines div:first-child{border-top:1px solid var(--rule)}
.contact-lines dt{font-size:.8125rem;color:var(--dim)}
.contact-lines dd{margin:4px 0 0}
.contact-lines a{text-underline-offset:3px}

/* ---------- cookie banner ---------- */
.cookie{position:fixed;left:var(--gutter);bottom:20px;z-index:80;max-width:520px;width:calc(100% - 2 * var(--gutter));background:#0a0c10;border:1px solid var(--rule-strong);padding:22px;display:none}
.cookie.show{display:block}
.cookie p{font-size:.9375rem;color:#c9cdd3}
.cookie .row{display:flex;gap:10px;flex-wrap:wrap}
.cookie .btn{padding:10px 18px}

/* ---------- misc ---------- */
.two{display:grid;gap:32px 64px;grid-template-columns:1fr}
@media (min-width:960px){.two{grid-template-columns:1fr 1fr}}
.section-head{display:grid;gap:20px;margin-bottom:clamp(40px,5vw,72px)}
@media (min-width:960px){.section-head{grid-template-columns:1fr 1fr;align-items:end}.section-head>p{justify-self:end;max-width:44ch}}
.section-head>p{color:var(--dim);margin:0}
.schematic{width:100%;height:auto}
.schematic text{font-family:var(--f);font-size:13px;fill:var(--dim)}
.legal h2{font-size:1.5rem;font-variation-settings:"wdth" 112;margin:2em 0 .6em;color:var(--ink)}
.legal table{border-collapse:collapse;width:100%;margin:0 0 1.4em;font-size:.9375rem}
.legal th,.legal td{border-bottom:1px solid var(--rule);text-align:left;padding:10px 12px 10px 0;vertical-align:top}
.legal th{color:var(--dim);font-weight:400}
.table-scroll{overflow-x:auto}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}

/* ---------- 3D HALO viewer ---------- */
.viewer{position:relative;aspect-ratio:21/9;margin-top:clamp(48px,7vw,96px);cursor:grab;touch-action:pan-y}
.viewer:active{cursor:grabbing}
.viewer canvas{width:100%;height:100%}
.viewer .hint{position:absolute;left:clamp(20px,3vw,36px);bottom:clamp(16px,2.5vw,28px);z-index:3;margin:0}
.viewer .hud{position:absolute;right:clamp(20px,3vw,36px);bottom:clamp(16px,2.5vw,28px);z-index:3;margin:0;text-align:right}
@media (max-width:700px){.viewer{aspect-ratio:4/3}.viewer .hud{display:none}}

/* ---------- definition / callout ---------- */
.define{border-left:2px solid var(--plasma);padding:6px 0 6px clamp(18px,2.5vw,32px);max-width:62ch}
.define p{font-size:clamp(1.2rem,1.8vw,1.5rem);line-height:1.45;color:var(--ink);font-variation-settings:"wdth" 104;margin:0}

/* ---------- comparison table ---------- */
.cmp{width:100%;border-collapse:collapse;font-size:.9375rem;min-width:720px}
.cmp th,.cmp td{text-align:left;padding:16px 16px 16px 0;border-bottom:1px solid var(--rule);vertical-align:top}
.cmp thead th{color:var(--dim);font-weight:400;font-size:.8125rem}
.cmp tbody th{font-weight:400;color:var(--dim)}
.cmp .hl{color:var(--ink)}
.cmp thead .hl{color:var(--plasma)}

/* ---------- timeline ---------- */
.timeline{list-style:none;margin:0;padding:0;border-top:1px solid var(--rule)}
.timeline li{display:grid;grid-template-columns:96px 1fr;gap:4px 24px;padding:24px 0;border-bottom:1px solid var(--rule)}
.timeline time{color:var(--plasma);font-variant-numeric:tabular-nums;font-size:.9375rem;padding-top:.2em;grid-row:span 2}
.timeline h3{font-size:1.25rem;font-variation-settings:"wdth" 112}
.timeline p{margin:6px 0 0;color:#c3c7cd;max-width:62ch}

/* ---------- articles ---------- */
.article-meta{display:flex;gap:20px;flex-wrap:wrap;margin-top:22px}
.article{display:grid;gap:32px 64px;grid-template-columns:1fr}
@media (min-width:960px){.article{grid-template-columns:minmax(0,4fr) minmax(0,8fr)}.article aside{position:sticky;top:calc(var(--head) + 32px);align-self:start}}
.article aside ol{list-style:none;padding:0;margin:0;border-top:1px solid var(--rule)}
.article aside li{border-bottom:1px solid var(--rule)}
.article aside a{display:block;padding:10px 0;text-decoration:none;color:var(--dim);font-size:.9375rem}
.article aside a:hover{color:var(--ink)}
.article .prose h2{font-size:clamp(1.5rem,2.4vw,2.1rem);line-height:1.15;letter-spacing:-.015em;font-variation-settings:"wdth" 114;color:var(--ink);margin:2em 0 .6em}
.article .prose h2:first-child{margin-top:0}
.article .prose{font-size:1.0625rem;line-height:1.7}
.sources{font-size:.875rem;color:var(--dim)}
.sources a{color:var(--dim)}
.cards{display:grid;gap:clamp(16px,2vw,28px);grid-template-columns:1fr}
@media (min-width:860px){.cards{grid-template-columns:repeat(3,1fr)}}
.post{display:flex;flex-direction:column;gap:14px;text-decoration:none;padding:24px 0;border-top:1px solid var(--rule-strong)}
.post .t{font-size:clamp(1.25rem,1.8vw,1.6rem);line-height:1.2;font-variation-settings:"wdth" 112;letter-spacing:-.01em;transition:color .25s}
.post:hover .t{color:var(--plasma)}
.post .d{color:var(--dim);margin:0}

/* ---------- sub-page video hero ---------- */
.hero.sub{height:82svh;min-height:560px}
.hero.sub .crumbs{margin-bottom:clamp(20px,3vw,32px)}
.hero.sub .crumbs a,.hero.sub .crumbs li{color:#c9cdd3}
.hero.sub .display{font-size:clamp(2.75rem,8.6vw,8.25rem)}
.hero.sub .h1-sub{color:#d5d8dc}
.intro-grid{display:grid;gap:20px}
@media (min-width:960px){.intro-grid{grid-template-columns:1fr 3fr}}
.lede.big{font-size:clamp(1.3rem,2.2vw,2rem);line-height:1.35;max-width:36ch;letter-spacing:-.01em;font-variation-settings:"wdth" 104}
.intro .viewer{margin-top:clamp(40px,6vw,80px)}

/* ---------- K2-style full-bleed gallery ---------- */
.gallery .slider-head{margin-bottom:clamp(28px,4vw,48px)}
.sq{width:56px;height:56px;display:grid;place-items:center;border:0;background:rgba(236,238,241,.1);color:var(--ink);cursor:pointer;transition:background .2s,color .2s}
.sq:hover:not(:disabled){background:var(--ink);color:#000}
.sq:disabled{opacity:.35;cursor:default}
.sq svg{width:16px;height:16px}
.gtrack{grid-auto-columns:min(76vw,1320px);gap:0;padding:0;margin:0;scroll-padding-inline:0;list-style:none}
.gslide{position:relative;height:clamp(420px,72vh,780px);overflow:hidden;background:var(--panel)}
.gslide img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.4;transform:scale(1.04);transition:opacity .6s ease,transform 1.2s cubic-bezier(.2,.8,.1,1)}
.gslide.active img{opacity:1;transform:none}
.gslide::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 45%,rgba(0,0,0,.82) 100%);pointer-events:none}
.gcap{position:absolute;left:clamp(20px,2.5vw,36px);right:clamp(20px,2.5vw,36px);bottom:clamp(22px,3vw,40px);z-index:2;max-width:38ch}
.gcap h3{font-size:clamp(1.9rem,3.2vw,3rem);line-height:1;letter-spacing:-.02em;font-variation-settings:"wdth" 118;margin:0 0 14px}
.gcap p{margin:0;font-size:clamp(1rem,1.3vw,1.2rem);line-height:1.35;font-weight:500;color:#e2e5e9}
.gnum{display:block;color:var(--plasma);margin-bottom:10px}
@media (max-width:700px){.gtrack{grid-auto-columns:88vw}.gslide{height:68svh}}
.hero.sub .crumbs{padding-left:clamp(0px,1.5vw,24px)}