:root{
  --ink:#0c1420;
  --panel:#131f31;
  --panel-2:#16243d;
  --line:#233650;
  --text:#e8edf5;
  --muted:#8fa1bb;
  --dim:#5c6d87;
  --flame:#e8622c;
  --max:1120px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--ink);
  color:var(--text);
  font-family:"IBM Plex Sans",sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{font-family:"Archivo",sans-serif;font-weight:500;line-height:1.15}
.mono{font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.18em;text-transform:uppercase}
.wrap{max-width:var(--max);margin:0 auto;padding:0 32px}
a{color:inherit;text-decoration:none}
::selection{background:var(--flame);color:#fff}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--flame);outline-offset:3px;border-radius:2px}

/* nav */
nav{position:sticky;top:0;z-index:50;background:rgba(12,20,32,.88);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:12px}
.brand svg{display:block}
.brand-name{font-family:"Archivo",sans-serif;font-weight:600;font-size:15px;letter-spacing:.32em}
.nav-links{display:flex;gap:32px}
.nav-links a{font-size:13px;color:var(--muted);letter-spacing:.06em;transition:color .2s}
.nav-links a:hover,.nav-links a:focus-visible{color:var(--text)}
.nav-links a[aria-current="page"]{color:var(--flame)}

/* hero (home) */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero-inner{position:relative;padding:120px 0 110px;max-width:640px}
.hero .mono{color:var(--flame);margin-bottom:20px}
.hero h1{font-size:clamp(38px,6vw,64px);letter-spacing:-.01em;margin-bottom:22px}
.hero p{color:var(--muted);font-size:18px;max-width:480px;margin-bottom:36px}
.hero-mark{position:absolute;right:-60px;top:50%;transform:translateY(-50%);width:520px;height:520px;opacity:.5;pointer-events:none}

/* page header (interior pages) */
.page-head{border-bottom:1px solid var(--line);padding:88px 0 64px}
.page-head .mono{color:var(--flame);margin-bottom:16px}
.page-head h1{font-size:clamp(32px,5vw,54px);margin-bottom:18px;letter-spacing:-.01em}
.page-head p{color:var(--muted);font-size:18px;max-width:560px}

/* buttons */
.btn{display:inline-block;font-family:"IBM Plex Mono",monospace;font-size:13px;letter-spacing:.14em;text-transform:uppercase;padding:14px 28px;border:1px solid var(--flame);color:var(--flame);transition:background .2s,color .2s;background:none;cursor:pointer}
.btn:hover{background:var(--flame);color:#fff}
.btn.solid{background:var(--flame);color:#fff}
.btn.solid:hover{background:#f0743f}

/* sections */
section{padding:96px 0;border-bottom:1px solid var(--line)}
.eyebrow{display:flex;align-items:center;gap:14px;margin-bottom:36px}
.eyebrow .mono{color:var(--dim)}
.eyebrow::after{content:"";flex:1;height:1px;background:var(--line)}
.section-title{font-size:clamp(26px,3.4vw,38px);margin-bottom:16px}
.lede{color:var(--muted);max-width:620px;margin-bottom:8px}

/* capability grid */
.cap-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);margin-top:12px}
.cap{background:var(--panel);padding:40px 36px}
.cap .mono{color:var(--flame);margin-bottom:14px}
.cap h3{font-size:21px;margin-bottom:12px}
.cap p{color:var(--muted);font-size:15px}

/* mission */
.mission{text-align:center}
.mission blockquote{font-family:"Archivo",sans-serif;font-weight:500;font-size:clamp(24px,3.6vw,40px);line-height:1.3;max-width:760px;margin:0 auto 20px}
.mission blockquote em{font-style:normal;color:var(--flame)}
.mission p{color:var(--muted);max-width:560px;margin:0 auto}

/* system cards */
.sys{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:12px}
.sys-card{background:var(--panel);border:1px solid var(--line);padding:36px;transition:border-color .2s;display:block}
.sys-card:hover{border-color:var(--flame)}
.sys-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:6px}
.sys-head h3{font-size:26px;letter-spacing:.04em}
.sys-head .mono{color:var(--dim)}
.sys-tag{color:var(--flame);font-size:13px;letter-spacing:.08em;margin-bottom:16px}
.sys-card>p{color:var(--muted);font-size:15px;margin-bottom:24px}
.spec{border-top:1px solid var(--line)}
.spec-row{display:flex;justify-content:space-between;gap:16px;padding:10px 0;border-bottom:1px solid var(--line);font-size:13px}
.spec-row span:first-child{color:var(--dim);font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.1em;text-transform:uppercase;white-space:nowrap}
.spec-row span:last-child{text-align:right}
.status{display:inline-block;margin-top:20px;font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--flame);border:1px solid var(--flame);padding:5px 12px}

/* system detail */
.sys-detail{display:grid;grid-template-columns:1.3fr 1fr;gap:60px;align-items:start}
.sys-detail h2{font-size:clamp(28px,4vw,44px);letter-spacing:.03em;margin-bottom:4px}
.sys-detail .sys-tag{font-size:14px}
.sys-detail .body p{color:var(--muted);margin-bottom:18px}
.sys-figure{border:1px solid var(--line);background:var(--panel);padding:32px;display:flex;align-items:center;justify-content:center}
.sys-figure svg{width:100%;height:auto}

/* research */
.res-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:12px}
.res{border-top:2px solid var(--flame);padding-top:22px}
.res .mono{color:var(--dim);margin-bottom:10px}
.res h3{font-size:18px;margin-bottom:10px}
.res p{color:var(--muted);font-size:14px}

/* research detail rows */
.prog{display:grid;grid-template-columns:200px 1fr;gap:40px;padding:44px 0;border-bottom:1px solid var(--line)}
.prog:last-of-type{border-bottom:none}
.prog .mono{color:var(--flame)}
.prog h3{font-size:22px;margin-bottom:12px}
.prog p{color:var(--muted);font-size:15px;margin-bottom:12px}
.prog ul{list-style:none;margin-top:8px}
.prog li{color:var(--muted);font-size:14px;padding:8px 0;border-bottom:1px solid var(--line)}
.prog li::before{content:"— ";color:var(--flame)}

/* values / principles */
.val-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.val{background:var(--panel);padding:32px 28px}
.val .mono{color:var(--flame);margin-bottom:12px}
.val h3{font-size:17px;margin-bottom:10px}
.val p{color:var(--muted);font-size:14px}

/* timeline (updates) */
.timeline{border-left:1px solid var(--line);margin-left:6px;padding-left:36px}
.entry{position:relative;padding-bottom:52px}
.entry::before{content:"";position:absolute;left:-41px;top:8px;width:9px;height:9px;background:var(--flame)}
.entry .mono{color:var(--dim);margin-bottom:8px}
.entry h3{font-size:20px;margin-bottom:10px}
.entry p{color:var(--muted);font-size:15px;max-width:640px}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px}
.contact-list{list-style:none}
.contact-list li{display:flex;justify-content:space-between;gap:16px;padding:16px 0;border-bottom:1px solid var(--line);font-size:14px}
.contact-list .mono{color:var(--dim)}
.contact-list a{color:var(--flame)}
form label{display:block;font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);margin:22px 0 8px}
form input,form textarea{width:100%;background:var(--panel);border:1px solid var(--line);color:var(--text);font-family:"IBM Plex Sans",sans-serif;font-size:15px;padding:12px 14px}
form input:focus,form textarea:focus{border-color:var(--flame);outline:none}
form button{margin-top:26px}
.form-note{color:var(--dim);font-size:12px;margin-top:14px}

/* cta band */
.cta-band{text-align:center}
.cta-band h2{font-size:clamp(24px,3.4vw,36px);margin-bottom:14px}
.cta-band p{color:var(--muted);max-width:480px;margin:0 auto 30px}

/* footer */
footer{padding:56px 0 40px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid var(--line)}
.foot-grid .mono{color:var(--dim);margin-bottom:16px}
.foot-grid ul{list-style:none}
.foot-grid li{margin-bottom:10px}
.foot-grid a{font-size:14px;color:var(--muted);transition:color .2s}
.foot-grid a:hover{color:var(--text)}
.foot-brand p{color:var(--dim);font-size:13px;max-width:260px;margin-top:14px}
.foot-base{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;padding-top:28px}
.foot-base .mono{color:var(--dim);letter-spacing:.14em}

/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* mobile nav */
.menu-btn{display:none;background:none;border:1px solid var(--line);color:var(--text);padding:8px 14px;font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.1em;cursor:pointer}
@media (max-width:860px){
  .menu-btn{display:block}
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:var(--ink);border-bottom:1px solid var(--line);flex-direction:column;gap:0;padding:8px 32px 20px}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 0;border-bottom:1px solid var(--line)}
  .hero-inner{padding:80px 0}
  .hero-mark{display:none}
  .cap-grid,.sys,.res-grid,.val-grid,.contact-grid,.sys-detail{grid-template-columns:1fr}
  .prog{grid-template-columns:1fr;gap:12px}
  .foot-grid{grid-template-columns:1fr 1fr}
  section{padding:72px 0}
  .page-head{padding:64px 0 48px}
}

/* ===== v2 additions: Mk-0 program redesign ===== */

/* announcement ticker */
.ticker{background:var(--flame);color:#fff;overflow:hidden;white-space:nowrap}
.ticker-inner{display:inline-block;padding:7px 0;font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;animation:tick 28s linear infinite}
.ticker a{color:#fff}
@keyframes tick{from{transform:translateX(100vw)}to{transform:translateX(-100%)}}
@media (prefers-reduced-motion:reduce){.ticker-inner{animation:none;padding-left:32px}}

/* engineering grid backdrop on hero */
.hero.gridbg{
  background-image:
    linear-gradient(rgba(35,54,80,.35) 1px,transparent 1px),
    linear-gradient(90deg,rgba(35,54,80,.35) 1px,transparent 1px);
  background-size:48px 48px;
}

/* terminal block */
.term{background:#0a111c;border:1px solid var(--line);font-family:"IBM Plex Mono",monospace;font-size:13px;line-height:1.9;padding:24px 26px;overflow-x:auto}
.term .cmt{color:var(--dim)}
.term .cmd{color:var(--text)}
.term .cmd::before{content:"$ ";color:var(--flame)}
.term .out{color:#7fbf8e}

/* phase cards */
.phase{display:grid;grid-template-columns:140px 1fr auto;gap:28px;align-items:start;background:var(--panel);border:1px solid var(--line);padding:30px 32px;margin-bottom:16px}
.phase .mono{color:var(--flame)}
.phase h3{font-size:19px;margin-bottom:8px}
.phase p{color:var(--muted);font-size:14px}
.phase .gate{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--dim);border:1px solid var(--line);padding:5px 12px;white-space:nowrap}
.phase.active{border-color:var(--flame)}
.phase.active .gate{color:var(--flame);border-color:var(--flame)}

/* program banner card on home */
.program-card{background:var(--panel);border:1px solid var(--flame);padding:44px;display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:center}
.program-card h2{font-size:clamp(24px,3.2vw,34px);margin-bottom:14px}
.program-card p{color:var(--muted);margin-bottom:26px}
.blink{display:inline-block;width:9px;height:9px;background:var(--flame);margin-right:10px;animation:pulse 1.6s ease infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.25}}
@media (prefers-reduced-motion:reduce){.blink{animation:none}}

@media (max-width:860px){
  .phase{grid-template-columns:1fr;gap:12px}
  .program-card{grid-template-columns:1fr;padding:32px}
}