/* ============================================================
   SARV — design system
   ink black #0A0E0C · lime #C6F24E · paper #F5F7F1
   ============================================================ */
:root{
  --bg:#0A0E0C;
  --bg2:#0E1411;
  --bg3:#131B16;
  --line:#243129;
  --line2:#2E3E33;
  --text:#F5F7F1;
  --muted:#93A19A;
  --dim:#5E6E64;
  --lime:#C6F24E;
  --limed:#7DA82B;
  --amber:#E8B54A;
  --maxw:1180px;
  --font-display:'Space Grotesk',system-ui,sans-serif;
  --font-body:'Inter',system-ui,sans-serif;
  --font-mono:'IBM Plex Mono',monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--text);
  font-family:var(--font-body);font-size:17px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
::selection{background:var(--lime);color:#0A0E0C}
a{color:var(--lime);text-decoration:none}
a:hover{text-decoration:underline}
img,video{max-width:100%;display:block}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:700;line-height:1.12;letter-spacing:-0.01em}
.mono{font-family:var(--font-mono)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
section{padding:110px 0}
.narrow{max-width:820px}

/* ---------- header ---------- */
header.site{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(10,14,12,.82);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav{max-width:var(--maxw);margin:0 auto;padding:0 28px;height:72px;
  display:flex;align-items:center;justify-content:space-between}
.logo{font-family:var(--font-display);font-weight:700;font-size:22px;letter-spacing:6px;color:var(--text)}
.logo em{font-style:normal;color:var(--lime)}
.nav-links{display:flex;gap:34px;list-style:none}
.nav-links a{color:var(--muted);font-size:14px;letter-spacing:.06em;text-transform:uppercase;font-family:var(--font-mono)}
.nav-links a:hover,.nav-links a.active{color:var(--lime);text-decoration:none}
.nav-cta{background:var(--lime);color:#0A0E0C!important;padding:10px 22px;font-weight:700;border-radius:2px}
.nav-cta:hover{background:#d8ff70}
.burger{display:none;background:none;border:none;cursor:pointer;padding:8px}
.burger span{display:block;width:26px;height:2px;background:var(--text);margin:6px 0;transition:.3s}
@media(max-width:920px){
  .burger{display:block}
  .nav-links{position:fixed;inset:72px 0 auto 0;background:var(--bg2);flex-direction:column;
    padding:28px;gap:22px;border-bottom:1px solid var(--line);transform:translateY(-140%);transition:.35s}
  .nav-links.open{transform:translateY(0)}
}

/* ---------- hero ---------- */
.hero{min-height:100vh;display:flex;align-items:center;padding:160px 0 90px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;
  background:radial-gradient(900px 500px at 78% 30%,rgba(198,242,78,.07),transparent 60%),
             radial-gradient(700px 500px at 12% 85%,rgba(198,242,78,.05),transparent 60%)}
.hero .wrap{position:relative}
.kicker{font-family:var(--font-mono);font-size:13px;letter-spacing:.35em;color:var(--lime);text-transform:uppercase;margin-bottom:26px}
.hero h1{font-size:clamp(42px,6.4vw,86px);max-width:14ch}
.hero h1 .lime{color:var(--lime)}
.hero p.lede{font-size:clamp(18px,2vw,23px);color:var(--muted);max-width:56ch;margin-top:30px}
.btn{display:inline-block;padding:16px 38px;font-family:var(--font-mono);font-size:14px;
  letter-spacing:.14em;text-transform:uppercase;font-weight:700;border-radius:2px;transition:.25s}
.btn-primary{background:var(--lime);color:#0A0E0C}
.btn-primary:hover{background:#d8ff70;text-decoration:none;transform:translateY(-2px)}
.btn-ghost{border:1px solid var(--line2);color:var(--text)}
.btn-ghost:hover{border-color:var(--lime);color:var(--lime);text-decoration:none}
.hero-cta{display:flex;gap:18px;margin-top:44px;flex-wrap:wrap}

/* ---------- generic section headers ---------- */
.sec-kicker{font-family:var(--font-mono);font-size:12px;letter-spacing:.35em;color:var(--limed);text-transform:uppercase;margin-bottom:18px}
h2.sec-title{font-size:clamp(30px,4vw,52px);max-width:22ch}
.sec-sub{color:var(--muted);font-size:19px;max-width:62ch;margin-top:22px}
.alt{background:var(--bg2)}
.alt2{background:var(--bg3)}
hr.rule{border:none;border-top:1px solid var(--line);max-width:var(--maxw);margin:0 auto}

/* ---------- grids & cards ---------- */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
@media(max-width:920px){.grid2,.grid3,.grid4{grid-template-columns:1fr;gap:36px}}
.card{background:var(--bg2);border:1px solid var(--line);padding:36px 32px;border-radius:4px;transition:.3s}
.card:hover{border-color:var(--limed);transform:translateY(-4px)}
.card h3{font-size:22px;margin:18px 0 12px}
.card p{color:var(--muted);font-size:16px}
.card .ico{width:56px;height:56px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line2);border-radius:4px}
.card .ico svg{stroke:var(--lime)}
.stat{border-left:2px solid var(--lime);padding:6px 0 6px 26px}
.stat .num{font-family:var(--font-display);font-size:clamp(40px,4.6vw,64px);font-weight:700;color:var(--lime);line-height:1}
.stat .lbl{color:var(--muted);margin-top:10px;font-size:15px}
.stat .src{font-family:var(--font-mono);font-size:11px;color:var(--dim);margin-top:8px;letter-spacing:.04em}
.stat .src a{color:var(--dim)}
.note{font-size:13px;color:var(--dim);font-family:var(--font-mono);letter-spacing:.02em}

/* ---------- steps / flows ---------- */
.steps{counter-reset:step;display:grid;gap:0}
.step{display:grid;grid-template-columns:110px 1fr;gap:34px;padding:38px 0;border-top:1px solid var(--line)}
.step:last-child{border-bottom:1px solid var(--line)}
.step::before{counter-increment:step;content:counter(step,decimal-leading-zero);
  font-family:var(--font-mono);font-size:44px;color:var(--limed);line-height:1}
.step h3{font-size:24px;margin-bottom:10px}
.step p{color:var(--muted);max-width:64ch}
@media(max-width:640px){.step{grid-template-columns:64px 1fr}.step::before{font-size:30px}}

/* ---------- tables ---------- */
table.data{width:100%;border-collapse:collapse;font-size:16px}
table.data th{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);text-align:left;padding:14px 16px;border-bottom:1px solid var(--line2)}
table.data td{padding:14px 16px;border-bottom:1px solid var(--line);color:var(--text)}
table.data td.num{text-align:right;font-family:var(--font-mono)}
table.data th.num{text-align:right}
table.data tr.hl td{color:var(--lime);font-weight:700}
table.data tr td:first-child{color:var(--muted)}
table.data tr.hl td:first-child{color:var(--lime)}

/* ---------- video ---------- */
.video-frame{border:1px solid var(--line2);border-radius:6px;overflow:hidden;background:#000;
  box-shadow:0 30px 80px rgba(0,0,0,.5)}
.video-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media(max-width:920px){.video-row{grid-template-columns:1fr}}
.video-card .cap{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--muted);margin-top:12px;text-transform:uppercase}

/* ---------- pull quote / manifesto ---------- */
.manifesto{font-family:var(--font-display);font-size:clamp(26px,3.4vw,44px);font-weight:700;
  line-height:1.3;max-width:24ch}
.manifesto .lime{color:var(--lime)}
.big-word{font-family:var(--font-display);font-size:clamp(60px,10vw,150px);font-weight:700;
  color:var(--lime);line-height:.95;letter-spacing:-.02em}

/* ---------- pillars ---------- */
.pillars{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line2);border-bottom:1px solid var(--line2)}
.pillar{padding:44px 30px;border-left:1px solid var(--line)}
.pillar:first-child{border-left:none}
.pillar h3{font-size:19px;letter-spacing:.04em;margin:20px 0 12px;text-transform:uppercase;font-family:var(--font-mono);font-weight:700}
.pillar p{color:var(--muted);font-size:15px}
@media(max-width:920px){.pillars{grid-template-columns:1fr}.pillar{border-left:none;border-top:1px solid var(--line)}.pillar:first-child{border-top:none}}

/* ---------- faq ---------- */
details.faq{border-top:1px solid var(--line)}
details.faq:last-of-type{border-bottom:1px solid var(--line)}
details.faq summary{cursor:pointer;padding:26px 8px;font-family:var(--font-display);
  font-size:20px;font-weight:700;list-style:none;display:flex;justify-content:space-between;align-items:center}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";font-family:var(--font-mono);color:var(--lime);font-size:26px}
details.faq[open] summary::after{content:"–"}
details.faq .ans{padding:0 8px 28px;color:var(--muted);max-width:70ch}

/* ---------- forms ---------- */
form.wait{display:grid;gap:18px;max-width:560px}
form.wait label{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
form.wait input,form.wait select,form.wait textarea{
  background:var(--bg2);border:1px solid var(--line2);color:var(--text);
  padding:15px 18px;font-size:16px;font-family:var(--font-body);border-radius:2px;width:100%}
form.wait input:focus,form.wait select:focus,form.wait textarea:focus{outline:none;border-color:var(--lime)}
.form-ok{border:1px solid var(--limed);background:rgba(198,242,78,.06);padding:36px;border-radius:4px}
.form-err{border:1px solid #8a4a3a;background:rgba(232,90,60,.08);padding:20px;border-radius:4px;color:#E8B54A;font-family:var(--font-mono);font-size:14px}
form.wait .row2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
form.wait .field{display:grid;gap:9px}
form.wait textarea{min-height:130px;resize:vertical}
form.wait select{appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2393A19A' stroke-width='2' fill='none'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 16px center}
.form-note{font-size:13px;color:var(--dim);max-width:46ch;line-height:1.6}
.form-banner{padding:18px 22px;border-radius:3px;font-size:15px;line-height:1.55;margin-bottom:6px}
.form-banner.ok{border:1px solid var(--limed);background:rgba(198,242,78,.07);color:var(--lime)}
.form-banner.err{border:1px solid #8a4a3a;background:rgba(232,90,60,.09);color:var(--amber)}
@media(max-width:720px){form.wait .row2{grid-template-columns:1fr}}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(120deg,#0E1A10,#0A0E0C 60%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta-band .inner{display:flex;justify-content:space-between;align-items:center;gap:40px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(28px,3.6vw,46px)}

/* ---------- footer ---------- */
footer.site{border-top:1px solid var(--line);padding:70px 0 46px;background:var(--bg2)}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:44px}
@media(max-width:920px){.foot-grid{grid-template-columns:1fr 1fr}}
footer.site h4{font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--dim);margin-bottom:18px}
footer.site ul{list-style:none;display:grid;gap:10px}
footer.site ul a{color:var(--muted);font-size:15px}
footer.site ul a:hover{color:var(--lime)}
.foot-note{margin-top:54px;padding-top:26px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;color:var(--dim);font-size:13px;font-family:var(--font-mono)}

/* ---------- reveal animation ---------- */
.rv{opacity:0;transform:translateY(26px);transition:opacity .8s ease,transform .8s ease}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* ---------- page hero (interior pages) ---------- */
.page-hero{padding:190px 0 90px;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;
  background:radial-gradient(800px 400px at 80% 20%,rgba(198,242,78,.06),transparent 60%)}
.page-hero .wrap{position:relative}
.page-hero h1{font-size:clamp(38px,5.4vw,72px);max-width:16ch}
.page-hero .lede{font-size:clamp(18px,2vw,22px);color:var(--muted);max-width:58ch;margin-top:26px}

/* ---------- roadmap ---------- */
.roadmap{display:grid;gap:0}
.phase{display:grid;grid-template-columns:230px 1fr;gap:40px;padding:40px 0;border-top:1px solid var(--line)}
.phase:last-child{border-bottom:1px solid var(--line)}
.phase .ph-name{font-family:var(--font-mono);color:var(--lime);font-size:15px;letter-spacing:.1em;text-transform:uppercase}
.phase h3{font-size:24px;margin:8px 0 10px}
.phase p{color:var(--muted);max-width:66ch}
.phase ul{margin-top:12px;color:var(--muted);padding-left:20px;display:grid;gap:6px}
@media(max-width:640px){.phase{grid-template-columns:1fr}}

.tag{display:inline-block;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  border:1px solid var(--line2);color:var(--muted);padding:5px 12px;border-radius:20px;text-transform:uppercase}
.tag.lime{border-color:var(--limed);color:var(--lime)}

/* ---------- trusted-compute pipeline diagram ---------- */
.pipeline{margin-top:56px;border:1px solid var(--line);border-radius:8px;padding:44px 40px 36px;
  background:linear-gradient(180deg,rgba(198,242,78,.03),transparent 40%)}
.pipe-track{display:grid;grid-template-columns:repeat(8,1fr);gap:0;position:relative}
.pipe-track::before{content:"";position:absolute;left:4%;right:4%;top:17px;height:1px;
  background:linear-gradient(90deg,var(--limed),var(--lime),var(--limed))}
.pipe-node{position:relative;padding:0 10px;text-align:left}
.pipe-node .dot{width:13px;height:13px;border-radius:50%;background:var(--bg);
  border:2px solid var(--lime);margin:11px 0 22px;position:relative;z-index:1}
.pipe-node .stage{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:var(--lime);text-transform:uppercase;margin-bottom:9px}
.pipe-node .desc{font-size:13.5px;line-height:1.55;color:var(--muted)}
.pipe-node .num{position:absolute;top:-30px;left:10px;font-family:var(--font-mono);
  font-size:11px;color:var(--dim)}
@media(max-width:1000px){
  .pipe-track{grid-template-columns:1fr;gap:26px}
  .pipe-track::before{left:6px;right:auto;top:2%;bottom:2%;width:1px;height:auto;
    background:linear-gradient(180deg,var(--limed),var(--lime),var(--limed))}
  .pipe-node{padding:0 0 0 34px}
  .pipe-node .dot{position:absolute;left:0;top:3px;margin:0}
  .pipe-node .num{position:static;display:block;margin-bottom:4px}
}
.pipe-caption{margin-top:30px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:26px;flex-wrap:wrap;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--dim);text-transform:uppercase}
.pipe-caption b{color:var(--lime);font-weight:500}

/* ---------- evidence status tags ---------- */
.status{display:inline-block;font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;
  padding:4px 10px;border-radius:20px;text-transform:uppercase;vertical-align:middle;margin-left:10px}
.status.proven{border:1px solid var(--limed);color:var(--lime)}
.status.building{border:1px solid rgba(232,181,74,.5);color:var(--amber)}
.status.measured{border:1px solid var(--line2);color:var(--muted)}
.status-key{display:flex;gap:22px;flex-wrap:wrap;margin:26px 0 6px;
  font-size:13px;color:var(--muted)}
.status-key .status{margin-left:0}

/* ---------- hierarchy stack ---------- */
.hstack{display:grid;gap:0;max-width:860px}
.hlevel{display:grid;grid-template-columns:56px 1fr;gap:26px;padding:38px 0;
  border-top:1px solid var(--line)}
.hlevel:last-child{border-bottom:1px solid var(--line)}
.hlevel .harrow{font-size:26px;color:var(--lime);text-align:center;padding-top:6px}
.hlevel h3{font-size:clamp(20px,2.2vw,26px);margin-bottom:10px}
.hlevel h3 .tag{margin-left:14px}
.hlevel p{color:var(--muted);max-width:64ch}
.hlevel.dimmed{opacity:.72}
.hlevel.dimmed h3{color:var(--muted)}