/* ============================================================
   Opsuma. Design system v2
   Type: Fraunces (display) + Hanken Grotesk (body)
   Palette: ink / paper / signal green
   Stage: fixed WebGL canvas behind a long-scroll document
   ============================================================ */

:root{
  --ink:#0B1410;
  --ink-2:#0F1B15;
  --panel:#101D17;
  --panel-2:#14261D;
  --paper:#F3F0E7;
  --paper-dim:#B9C2BA;
  --slate:#7E8C82;
  --signal:#27E59B;
  --signal-deep:#12A876;
  --rust:#C5533A;
  --line:rgba(243,240,231,.12);
  --line-soft:rgba(243,240,231,.07);

  --maxw:1180px;
  --col:640px;
  --rail-w:200px;

  --ease-out:cubic-bezier(.16,1,.3,1);
  --ease-std:cubic-bezier(.22,.61,.36,1);
  --dur-fast:180ms;
  --dur-reveal:640ms;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html,body{max-width:100%;overflow-x:hidden}

body{
  background:var(--ink);
  color:var(--paper);
  font-family:"Hanken Grotesk",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  min-height:100vh;
  background-image:
    radial-gradient(900px 560px at 84% -8%, rgba(39,229,155,.09), transparent 62%),
    radial-gradient(700px 500px at -6% 100%, rgba(39,229,155,.05), transparent 58%);
  background-attachment:fixed;
}

h1,h2,h3{
  font-family:"Fraunces",Georgia,serif;
  font-weight:500;
  line-height:1.04;
  letter-spacing:-.018em;
  text-wrap:balance;
}
h1 em,h2 em{font-style:italic;font-weight:400;color:var(--signal)}
a{color:inherit;text-decoration:none}
b,strong{font-weight:600;color:var(--paper)}
p{text-wrap:pretty}
::selection{background:rgba(39,229,155,.28);color:var(--paper)}

:focus-visible{outline:2px solid var(--signal);outline-offset:3px;border-radius:4px}

/* ---------- Stage ---------- */
#stage{
  position:fixed;inset:0;width:100%;height:100%;
  display:block;z-index:0;
}
.vignette{
  position:fixed;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(130% 95% at 50% 50%, transparent 40%, rgba(4,9,7,.78) 100%),
    linear-gradient(90deg, rgba(11,20,16,.55) 0%, rgba(11,20,16,.18) 42%, transparent 62%);
}
.grain{
  position:fixed;inset:0;z-index:2;pointer-events:none;opacity:.055;
  mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.92' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .6 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  background-size:180px 180px;
}
body.no-gl #stage{display:none}
body.no-gl{
  background-image:
    radial-gradient(rgba(243,240,231,.045) 1px, transparent 1px),
    radial-gradient(900px 560px at 84% -8%, rgba(39,229,155,.10), transparent 62%);
  background-size:28px 28px, auto;
}

/* ---------- Top bar ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;z-index:80;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:18px 28px;
  transition:background-color .3s var(--ease-std), border-color .3s var(--ease-std), backdrop-filter .3s;
  border-bottom:1px solid transparent;
}
.topbar.scrolled{
  background:rgba(11,20,16,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line-soft);
}
.brand{display:flex;align-items:center;gap:11px;min-height:44px}
.mark{width:30px;height:30px;flex:none}
.brand-word{
  font-family:"Fraunces",serif;font-size:25px;font-weight:600;
  letter-spacing:-.03em;color:var(--paper);
}
.topbar-right{display:flex;align-items:center;gap:12px}

.motion-toggle{
  font-family:inherit;font-size:13.5px;font-weight:600;
  color:var(--paper-dim);background:transparent;
  border:1px solid var(--line);border-radius:999px;
  padding:0 16px;min-height:44px;cursor:pointer;
  transition:border-color var(--dur-fast), color var(--dur-fast);
}
.motion-toggle:hover{border-color:var(--signal);color:var(--paper)}
.motion-toggle .mt-off{display:none}
body.reduced .motion-toggle .mt-on{display:none}
body.reduced .motion-toggle .mt-off{display:inline}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14.5px;font-weight:600;
  padding:0 20px;min-height:44px;border-radius:999px;
  transition:transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), border-color var(--dur-fast), background-color var(--dur-fast);
  white-space:nowrap;cursor:pointer;font-family:inherit;border:1px solid transparent;
}
.btn:active{transform:scale(.97)}
.btn-solid{background:var(--signal);color:#04130C}
.btn-solid:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(39,229,155,.24)}
.btn-ghost{border-color:var(--line);color:var(--paper)}
.btn-ghost:hover{border-color:var(--signal);transform:translateY(-2px)}

/* ---------- Left rail ---------- */
.rail{
  position:fixed;left:28px;top:50%;transform:translateY(-50%);
  z-index:50;width:var(--rail-w);
}
.rail ul{list-style:none}
.rail li{margin:1px 0}
.rail a{
  display:flex;align-items:center;gap:10px;
  font-size:13.5px;color:var(--slate);
  padding:7px 8px;border-radius:7px;
  transition:color var(--dur-fast), background-color var(--dur-fast);
}
.rail a:hover{color:var(--paper);background:rgba(243,240,231,.05)}
.rail a.is-current{color:var(--signal)}
.rail .dot{
  width:6px;height:6px;border-radius:50%;flex:none;
  background:rgba(243,240,231,.18);
  transition:background-color .25s, box-shadow .25s, transform .25s var(--ease-out);
}
.rail a.is-current .dot{background:var(--signal);box-shadow:0 0 10px rgba(39,229,155,.65);transform:scale(1.25)}

/* ---------- Layout ---------- */
main{position:relative;z-index:3}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;position:relative}
.col{max-width:var(--col);position:relative}
.col::before{
  content:"";position:absolute;inset:-56px -80px -56px -80px;z-index:-1;
  background:radial-gradient(closest-side, rgba(11,20,16,.82), rgba(11,20,16,.35) 60%, transparent);
  filter:blur(26px);pointer-events:none;
}

.hero{
  min-height:100vh;min-height:100svh;display:flex;align-items:center;
  padding:140px 0 110px;position:relative;
}
.sect{padding:clamp(96px,14vh,170px) 0;position:relative}
.sect.contact{padding-bottom:clamp(80px,12vh,140px)}

.eyebrow{
  font-size:12px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--signal);font-weight:600;margin-bottom:22px;
}
h1{font-size:clamp(42px,6.2vw,84px);margin-bottom:26px}
h2{font-size:clamp(32px,4.2vw,54px);margin-bottom:22px}
h3{font-size:22px;line-height:1.2}
.lede{
  font-size:clamp(17.5px,1.55vw,21px);color:var(--paper);
  margin-bottom:22px;line-height:1.5;max-width:60ch;
}
p{color:var(--paper-dim)}
.lede{color:var(--paper)}

.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0 6px}

.proof-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:22px;
  margin:44px 0 0;padding-top:26px;border-top:1px solid var(--line);
}
.proof-strip div{display:flex;flex-direction:column;gap:6px}
.proof-strip b,.stat b{
  font-family:"Fraunces",serif;font-size:32px;font-weight:600;
  color:var(--signal);line-height:1;letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
}
.proof-strip div > span,.stat > span{font-size:13px;color:var(--slate);line-height:1.4}

.scroll-cue{
  position:absolute;left:50%;bottom:34px;transform:translateX(-50%);
  width:44px;height:44px;display:grid;place-items:center;
  border:1px solid var(--line);border-radius:50%;
  transition:border-color var(--dur-fast);
}
.scroll-cue:hover{border-color:var(--signal)}
.scroll-cue span{
  width:1.5px;height:14px;background:var(--signal);border-radius:2px;
  animation:cue 1.8s var(--ease-std) infinite;
}
@keyframes cue{0%{transform:translateY(-5px);opacity:0}30%{opacity:1}100%{transform:translateY(7px);opacity:0}}

/* ---------- Cards ---------- */
.cards{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px;
}
.card,.layer,.stat{
  background:rgba(14,26,20,.80);
  border:1px solid var(--line);
  border-radius:18px;padding:28px;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:border-color .25s, transform .25s var(--ease-out), background-color .25s;
}
.card:hover,.layer:hover{border-color:rgba(39,229,155,.45);transform:translateY(-3px);background:rgba(14,26,20,.9)}
.card .num{
  display:block;font-family:"Fraunces",serif;color:var(--signal);
  font-size:14px;font-weight:600;letter-spacing:.12em;margin-bottom:14px;
}
.card h3{margin-bottom:10px}
.card .num .owner{margin-left:8px;color:var(--slate);letter-spacing:.06em;font-weight:500;font-family:"Hanken Grotesk",sans-serif;font-size:12px;text-transform:none}
.studio-grid{grid-template-columns:repeat(4,1fr)}
.card-accent{border-color:rgba(39,229,155,.45);background:rgba(18,40,30,.84)}
.card-link{display:inline-block;margin-top:14px;font-size:14px;font-weight:600;color:var(--signal);border-bottom:1px solid rgba(39,229,155,.35);padding-bottom:1px;transition:border-color var(--dur-fast)}
.card-link:hover{border-color:var(--signal)}
.people{display:flex;flex-direction:column;gap:2px;margin:28px 0 8px;max-width:820px;padding:6px 24px;background:rgba(14,26,20,.82);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--line);border-radius:16px}
.person{padding:18px 0;border-top:1px solid var(--line-soft);display:grid;grid-template-columns:150px 1fr;gap:18px;align-items:start}
.person:first-child{border-top:0}
.person b{font-size:17px;color:var(--paper)}
.person span{font-size:15.5px;color:var(--paper-dim);line-height:1.55}
.footnote[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity var(--dur-reveal) var(--ease-out), transform var(--dur-reveal) var(--ease-out)}
.footnote[data-reveal].in{opacity:1;transform:none}
body.reduced .footnote[data-reveal]{opacity:1;transform:none;transition:none}
.card p{font-size:15.5px}

.layers{
  display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:44px;
}
.layer-head{display:flex;align-items:baseline;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-bottom:12px}
.layer p{font-size:15.5px}
.tag{
  font-size:12px;letter-spacing:.08em;text-transform:uppercase;font-weight:600;
  color:var(--signal);background:rgba(39,229,155,.09);
  border:1px solid rgba(39,229,155,.22);border-radius:999px;padding:5px 10px;
  white-space:nowrap;
}

.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:44px;
}
.stat{padding:22px 22px 20px;border-radius:14px;display:flex;flex-direction:column;gap:8px}
.stat b{font-size:34px}

.credibility{margin-top:26px;max-width:820px}
.credibility p{
  padding:20px 22px;border-left:2px solid var(--signal);
  background:rgba(14,26,20,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-radius:0 12px 12px 0;
  font-size:16px;color:var(--paper-dim);
}

.outcome{
  margin:26px 0 0;padding:16px 18px;max-width:820px;
  background:rgba(14,26,20,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-left:2px solid var(--signal);
  border-radius:0 10px 10px 0;
  color:var(--paper-dim);font-size:15.5px;
}
.footnote{
  margin-top:24px;font-size:13.5px;color:var(--slate);
  padding-top:16px;border-top:1px solid var(--line-soft);
}

/* ---------- Steps ---------- */
.steps{list-style:none;margin:36px 0 0;max-width:820px}
.steps li{
  display:grid;grid-template-columns:52px 1fr;gap:18px;
  padding:22px 0;border-top:1px solid var(--line-soft);
}
.steps li:first-child{border-top:0;padding-top:4px}
.step-n{
  font-family:"Fraunces",serif;font-size:15px;font-weight:600;
  color:var(--signal);padding-top:4px;
}
.step-head{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:6px}
.step-head b{font-size:19px;color:var(--paper)}
.steps p{font-size:15.5px;margin:0}

/* ---------- For ---------- */
.for-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:40px;margin-top:34px;align-items:start}
.do-list{list-style:none}
.do-list li{
  position:relative;padding-left:28px;margin-bottom:13px;
  color:var(--paper-dim);font-size:16.5px;
}
.do-list li::before{
  content:"";position:absolute;left:2px;top:10px;
  width:9px;height:9px;border-radius:50%;
  border:1.5px solid var(--signal);
}
.not-for{margin-top:6px;padding-top:0;border-top:0;font-size:14.5px;line-height:1.6}

/* ---------- Footer ---------- */
.pagefoot{
  position:relative;z-index:3;
  max-width:var(--maxw);margin:0 auto;padding:28px 28px 56px;
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  border-top:1px solid var(--line-soft);
  font-size:13.5px;color:var(--slate);
}
.pagefoot a{color:var(--signal)}
.foot-right{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.motion-toggle-foot{display:none;min-height:40px;font-size:13px;padding:0 14px}

/* ---------- Reveal ---------- */
[data-reveal] > *{
  opacity:0;transform:translateY(16px);
  transition:opacity var(--dur-reveal) var(--ease-out), transform var(--dur-reveal) var(--ease-out);
  transition-delay:calc(var(--d,0) * 90ms);
}
[data-reveal].in > *{opacity:1;transform:none}
.outcome[data-reveal],.credibility[data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity var(--dur-reveal) var(--ease-out), transform var(--dur-reveal) var(--ease-out);
}
.outcome[data-reveal].in,.credibility[data-reveal].in{opacity:1;transform:none}
.outcome[data-reveal] > *{opacity:1;transform:none;transition:none}

body.reduced [data-reveal] > *,
body.reduced .outcome[data-reveal],
body.reduced .credibility[data-reveal]{opacity:1;transform:none;transition:none}
body.reduced .scroll-cue span{animation:none}
body.reduced .card:hover,body.reduced .layer:hover{transform:none}

/* ---------- Responsive ---------- */
.lbl-short{display:none}

@media (max-width:1180px){
  .rail{display:none}
}
@media (max-width:1020px){
  .cards,.studio-grid{grid-template-columns:1fr 1fr}
  .person{grid-template-columns:1fr;gap:6px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .proof-strip{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  body{font-size:16.5px}
  .topbar{padding:12px 16px;gap:10px}
  .brand-word{font-size:21px}
  .mark{width:26px;height:26px}
  .topbar-right{gap:8px}
  .motion-toggle{display:none}
  .lbl-full{display:none}
  .lbl-short{display:inline}
  .btn{font-size:13.5px;padding:0 18px}
  .wrap{padding:0 20px}
  .hero{padding:120px 0 90px;min-height:92vh;min-height:92svh}
  .card,.layer,.stat,.people,.outcome,.credibility p{backdrop-filter:none;-webkit-backdrop-filter:none}
  .card,.layer{padding:22px;background:rgba(14,26,20,.9)}
  .stat{background:rgba(14,26,20,.9)}
  .people{background:rgba(14,26,20,.92);padding:4px 18px}
  .outcome,.credibility p{background:rgba(14,26,20,.92)}
  .card p,.layer p{font-size:15px}
  .motion-toggle-foot{display:inline-flex}
  .sect{padding:80px 0}
  .cards,.studio-grid,.layers{grid-template-columns:1fr}
  .for-grid{grid-template-columns:1fr;gap:20px}
  .steps li{grid-template-columns:34px 1fr;gap:12px}
  .pagefoot{padding:24px 20px 44px}
  .col::before{inset:-30px -40px}
  .vignette{background:radial-gradient(130% 95% at 50% 50%, rgba(4,9,7,.25) 30%, rgba(4,9,7,.86) 100%)}
  .scroll-cue{display:none}
}
@media (min-width:600px) and (max-width:900px){
  .studio-grid,.cards,.layers{grid-template-columns:1fr 1fr}
}
@media (max-width:560px){
  .proof-strip{grid-template-columns:1fr 1fr;gap:16px}
  .stats{grid-template-columns:1fr 1fr;gap:10px}
  .stat{padding:18px 16px}
  .stat b,.proof-strip b{font-size:28px}
  h1{font-size:clamp(34px,10vw,44px)}
  h2{font-size:clamp(27px,7.6vw,36px)}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* ---------- Safe areas (notched phones) ---------- */
@supports (padding: max(0px)) {
  .wrap,.topbar,.pagefoot{
    padding-left:max(28px, env(safe-area-inset-left));
    padding-right:max(28px, env(safe-area-inset-right));
  }
  @media (max-width:900px){
    .wrap,.pagefoot{padding-left:max(20px, env(safe-area-inset-left));padding-right:max(20px, env(safe-area-inset-right))}
    .topbar{padding-left:max(16px, env(safe-area-inset-left));padding-right:max(16px, env(safe-area-inset-right))}
  }
  .pagefoot{padding-bottom:max(56px, calc(40px + env(safe-area-inset-bottom)))}
}