:root{
    --bg:#000000;--bg-alt:#0A0A0A;--surface:#141414;--surface-2:#1B1B1B;
    --text:#F5F5F5;--muted:#A8A8A8;--dim:#6A6A6A;--border:#2A2A2A;--border-hi:#F5F5F5;
    --accent:#A855F7;--accent-dim:rgba(168,85,247,.16);
    --display:'Inter Tight','Switzer',system-ui,sans-serif;
    --sans:'Inter',system-ui,sans-serif;
    --mono:'JetBrains Mono',ui-monospace,Consolas,monospace;
    --serif:'Newsreader',Georgia,serif;
    --gutter:clamp(16px,4vw,48px);
    --measure:64ch;
    color-scheme:dark;
  }
  *{box-sizing:border-box}
  html,body{overflow-x:clip}body{margin:0;overflow-wrap:anywhere;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:17px;line-height:1.5;-webkit-font-smoothing:antialiased}
  h1,h2,h3,h4{font-family:var(--display);font-weight:500;letter-spacing:-.035em;line-height:1.02;margin:0;text-wrap:balance}
  p{margin:0;color:var(--muted)}
  a{color:inherit;text-decoration:none}
  img{max-width:100%;display:block}
  .serif{font-family:var(--serif);font-style:italic;font-weight:400;letter-spacing:-.01em}
  .mono{font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--dim)}
  .wrap{padding-inline:var(--gutter);max-width:1280px;margin-inline:auto}
  button{font:inherit}
  :focus-visible{outline:1px solid var(--text);outline-offset:3px}

  /* nav */
  .nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;backdrop-filter:blur(12px);background:rgba(0,0,0,.72);border-bottom:1px solid var(--border)}
  .nav-in{display:flex;align-items:center;justify-content:space-between;height:60px;gap:16px}
  .brand{font-family:'Montserrat',var(--display);font-weight:600;letter-spacing:-.02em;font-size:17px}
  .brand span{color:var(--dim);font-weight:400}
  .nav-links{display:flex;gap:22px;font-size:14px;color:var(--muted)}
  .nav-links a:hover{color:var(--text)}
  .review{background:var(--surface);border-bottom:1px solid var(--border);font-size:13px;color:var(--muted)}
  .review .wrap{display:flex;gap:14px;align-items:center;min-height:40px;flex-wrap:wrap;padding-block:6px}
  .review b{color:var(--text);font-weight:500}
  .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block;flex:none}

  /* index hero */
  .hero{padding-block:clamp(56px,9vw,120px) clamp(32px,5vw,56px)}
  .hero h1{font-size:clamp(48px,9vw,128px)}
  .hero p{max-width:var(--measure);font-size:clamp(17px,1.6vw,21px);margin-top:22px}
  .filters{display:flex;gap:8px;flex-wrap:wrap;padding-block:8px 36px;border-bottom:1px solid var(--border);margin-bottom:36px}
  .chip{border:1px solid var(--border);background:transparent;color:var(--muted);border-radius:999px;padding:8px 14px;font-size:14px;cursor:pointer;transition:border-color .2s,color .2s,background .2s}
  .chip:hover{border-color:var(--text);color:var(--text)}
  .chip[aria-pressed="true"]{background:var(--text);color:var(--bg);border-color:var(--text)}

  /* cards */
  .grid{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
  .card{grid-column:span 4;background:var(--surface);border:1px solid var(--border);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;transition:border-color .3s;min-width:0}
  .card:hover{border-color:var(--border-hi)}
  .card.featured{grid-column:span 12;flex-direction:row}
  .card[hidden]{display:none}
  .card-media{aspect-ratio:16/9;background:var(--bg-alt);border-bottom:1px solid var(--border);overflow:hidden;position:relative}
  .card.featured .card-media{aspect-ratio:auto;flex:0 0 58%;min-height:320px;border-bottom:0;border-right:1px solid var(--border)}
  .card.featured .card-media svg{height:100%;padding:24px}
  .card.featured .card-media img{height:100%}
  .card.featured .card-body{flex:1;justify-content:center;padding:32px}
  .card-media img,.card-media svg{width:100%;height:100%;object-fit:cover}
  .card-media .cap{position:absolute;left:14px;bottom:12px;font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);background:rgba(0,0,0,.6);padding:4px 8px;border-radius:4px}
  .card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:14px}
  .tags{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
  .tag{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);border:1px solid var(--border);border-radius:4px;padding:3px 7px}
  .status{display:inline-flex;align-items:flex-start;gap:7px;font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--text)}
  .status i{width:7px;height:7px;border-radius:50%;background:var(--dim);flex:none;margin-top:4px}
  .status.live i{background:var(--accent);box-shadow:0 0 0 3px var(--accent-dim)}
  .card h3{font-size:clamp(20px,1.7vw,24px)}
  .card.featured h3{font-size:clamp(28px,3vw,42px)}
  .card .site{font-size:14px;color:var(--dim)}
  .card .more{margin-top:auto;font-size:14px;color:var(--text);display:inline-flex;gap:8px;align-items:center}
  .card .more:after{content:"→";transition:transform .2s}
  .card:hover .more:after{transform:translateX(4px)}

  /* numbers strip */
  .section{padding-block:clamp(64px,8vw,120px)}
  .section-head{display:grid;grid-template-columns:1fr;gap:18px;margin-bottom:40px;max-width:820px}
  .section h2{font-size:clamp(34px,4.6vw,64px)}
  .section-head p{font-size:18px;max-width:var(--measure)}
  .nums{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
  .num{border-top:1px solid var(--border);padding-top:18px;display:flex;flex-direction:column;gap:8px;container-type:inline-size}
  .num .v{font-family:var(--display);font-size:clamp(44px,5vw,72px);letter-spacing:-.04em;line-height:1;font-variant-numeric:tabular-nums;white-space:nowrap}
  .nums:has(.v.long) .v{font-size:min(clamp(44px,5vw,72px),15cqi)}
  .num .l{color:var(--text);font-size:16px}
  .num .q{color:var(--dim);font-size:14px}
  .ev{display:inline-block;font-family:var(--mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase;padding:2px 6px;border-radius:3px;border:1px solid var(--border);color:var(--muted);width:max-content}
  .ev.measured{color:var(--text);border-color:var(--text)}
  .ev.planned{color:var(--dim);border-style:dashed}
  .ev.modelled{color:var(--muted);border-style:dotted}

  /* template legend */
  .legend{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
  .legend article{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:24px;display:flex;flex-direction:column;gap:10px}
  .legend h3{font-size:22px}
  .legend p{font-size:15px}
  .legend ol{margin:6px 0 0;padding-left:18px;color:var(--muted);font-size:15px;display:flex;flex-direction:column;gap:6px}
  .legend li b{color:var(--text);font-weight:500}

  /* quotes (unfilled, honest) */
  .quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  .quote{border:1px dashed var(--border);border-radius:12px;padding:24px;min-height:180px;display:flex;flex-direction:column;justify-content:space-between;gap:16px}
  .quote .serif{font-size:22px;color:var(--dim);line-height:1.25}
  .quote .who{font-size:13px;color:var(--dim)}

  /* checklist */
  .checks{display:flex;flex-direction:column;border-top:1px solid var(--border)}
  .check{display:grid;grid-template-columns:120px 1fr;gap:20px;padding:16px 0;border-bottom:1px solid var(--border);font-size:15px}
  .check .k{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--dim);padding-top:4px}
  .check b{color:var(--text);font-weight:500}

  /* CTA */
  .cta{padding-block:clamp(72px,10vw,140px);border-top:1px solid var(--border);text-align:left}
  .cta h2{font-size:clamp(40px,6vw,88px)}
  .cta p{max-width:var(--measure);font-size:18px;margin-top:20px}
  .btns{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap}
  .btn{border-radius:999px;padding:14px 26px;font-size:15px;font-weight:500;background:var(--text);color:var(--bg);border:1px solid var(--text);cursor:pointer;transition:transform .2s,opacity .2s}
  .btn:hover{transform:scale(1.02);opacity:.92}
  .btn.sec{background:transparent;color:var(--text)}
  .btn.sec:hover{background:var(--text);color:var(--bg);opacity:1}
  footer{border-top:1px solid var(--border);padding-block:28px;font-size:13px;color:var(--dim);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

  /* detail */
  .crumb{padding-block:22px 0;font-size:14px;color:var(--dim)}
  .crumb a:hover{color:var(--text)}
  .d-hero{padding-block:28px clamp(36px,5vw,64px);display:grid;grid-template-columns:1fr;gap:20px}
  .d-hero .eyebrow{display:flex;gap:10px 18px;flex-wrap:wrap;align-items:center}
  .d-hero h1{font-size:clamp(38px,6.4vw,92px);max-width:18ch}
  .d-hero .sub{font-size:clamp(18px,1.8vw,23px);max-width:var(--measure)}
  .d-media{border:1px solid var(--border);border-radius:12px;overflow:hidden;background:var(--bg-alt);position:relative}
  .d-media img,.d-media svg{width:100%;display:block}
  .d-media .cap{padding:12px 16px;border-top:1px solid var(--border);font-size:13px;color:var(--dim);background:var(--surface)}
  .impact{margin-block:clamp(36px,5vw,64px);border:1px solid var(--border);border-radius:12px;background:var(--surface);padding:clamp(20px,3vw,36px);display:grid;grid-template-columns:1fr;gap:26px}
  .impact .mono{color:var(--muted)}
  .impact .nums{grid-template-columns:repeat(3,1fr)}
  .impact .num{border-top-color:var(--border)}
  .body{display:grid;grid-template-columns:280px 1fr;gap:clamp(28px,5vw,80px);padding-block:12px clamp(48px,6vw,96px)}
  .rail{position:sticky;top:calc(env(safe-area-inset-top,0px) + 76px);align-self:start;display:flex;flex-direction:column;border-top:1px solid var(--border)}
  .rail div{display:flex;flex-direction:column;gap:4px;padding:14px 0;border-bottom:1px solid var(--border);font-size:15px}
  .rail .k{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--dim)}
  .rail .v{color:var(--text)}
  .prose{display:flex;flex-direction:column;gap:clamp(40px,5vw,64px);min-width:0}
  .prose section{display:grid;grid-template-columns:1fr;gap:16px}
  .prose h2{font-size:clamp(28px,3.4vw,44px);max-width:22ch}
  .prose p{max-width:var(--measure);font-size:18px}
  .prose .step{display:grid;grid-template-columns:44px 1fr;gap:16px;padding:16px 0;border-top:1px solid var(--border)}
  .prose .step:last-child{border-bottom:1px solid var(--border)}
  .prose .step .n{font-family:var(--mono);font-size:13px;color:var(--dim);padding-top:4px}
  .prose .step b{display:block;color:var(--text);font-weight:500;margin-bottom:4px}
  .prose .step p{font-size:16px}
  .prose table{border-collapse:collapse;width:100%;max-width:560px;font-size:15px;font-variant-numeric:tabular-nums}
  .prose th,.prose td{text-align:left;padding:10px 12px 10px 0;border-bottom:1px solid var(--border)}
  .prose th{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--dim);font-weight:500}
  .prose td{color:var(--text)}
  .tscroll{overflow-x:auto}
  .callout{border-left:2px solid var(--accent);padding:6px 0 6px 20px}
  .callout p{color:var(--text);font-size:20px}
  .callout .serif{font-size:24px}
  .fig{display:grid;grid-template-columns:1fr 1fr;gap:16px}
  .fig figure{margin:0;border:1px solid var(--border);border-radius:12px;overflow:hidden;background:var(--bg-alt)}
  .fig figcaption{padding:10px 14px;font-size:13px;color:var(--dim);border-top:1px solid var(--border);background:var(--surface)}
  .status-box{border:1px solid var(--border);border-radius:12px;padding:22px 24px;display:grid;grid-template-columns:1fr;gap:8px;background:var(--surface)}
  .status-box .v{color:var(--text);font-size:17px}
  .related{padding-block:0 clamp(48px,6vw,96px)}
  .related h2{font-size:clamp(28px,3.4vw,44px);margin-bottom:28px}
  .related .grid .card{grid-column:span 4}
  .related .grid .card h3{font-size:clamp(20px,1.9vw,26px)}


  /* inputs strip */
  .inputs{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:28px}
  .inputs a{border:1px solid var(--border);border-radius:12px;padding:20px;background:var(--bg-alt);display:flex;flex-direction:column;gap:8px;transition:border-color .2s}
  .inputs a:hover{border-color:var(--accent)}
  .inputs h3{font-size:20px}
  .inputs p{font-size:14px}
  .inputs .go{margin-top:auto;font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--accent)}
  @media (max-width:980px){.inputs{grid-template-columns:repeat(2,1fr)}}
  @media (max-width:560px){.inputs{grid-template-columns:1fr}}

  /* on-site block */
  .edge{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
  .edge div{border:1px solid var(--border);border-radius:12px;padding:18px 20px;display:flex;flex-direction:column;gap:6px;background:var(--bg-alt)}
  .edge .k{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--dim)}
  .edge .v{color:var(--text);font-size:16px;line-height:1.45}
  .flow{border:1px solid var(--border);border-radius:12px;background:var(--bg-alt);overflow:hidden;margin-bottom:28px}
  .flow svg{width:100%;height:auto;display:block}
  .cols{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  .col{border-top:1px solid var(--border);padding-top:18px;display:flex;flex-direction:column;gap:10px}
  .col h3{font-size:22px}
  .col p{font-size:15px}
  .col .big{font-family:var(--display);font-size:clamp(34px,3.6vw,52px);letter-spacing:-.04em;line-height:1;color:var(--text);font-variant-numeric:tabular-nums}
  .foot-note{margin-top:28px;font-size:14px;color:var(--dim);max-width:var(--measure)}
  @media (max-width:980px){.cols{grid-template-columns:1fr}}
  @media (max-width:560px){.edge{grid-template-columns:1fr}}

  /* twin section */
  .twin{display:grid;grid-template-columns:1.1fr 1fr;gap:28px;align-items:start;margin-bottom:40px}
  .twin .d-media img{aspect-ratio:16/9;object-fit:cover}
  .twin-copy{display:flex;flex-direction:column;gap:14px}
  .twin-copy p{font-size:17px;max-width:var(--measure)}
  .steps5{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
  .steps5 div{border-top:1px solid var(--border);padding-top:16px;display:flex;flex-direction:column;gap:8px}
  .steps5 .n{font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:var(--dim)}
  .steps5 b{color:var(--text);font-weight:500;font-size:18px;letter-spacing:-.01em}
  .steps5 p{font-size:14px}
  .eval{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:36px}
  .eval div{border:1px solid var(--border);border-radius:12px;padding:22px 24px;background:var(--surface);display:flex;flex-direction:column;gap:8px}
  .eval h3{font-size:22px}
  .eval p{font-size:15px}
  @media (max-width:980px){.twin{grid-template-columns:1fr}.steps5{grid-template-columns:repeat(2,1fr)}}
  @media (max-width:560px){.steps5,.eval{grid-template-columns:1fr}}
  @media (max-width:980px){
    .card{grid-column:span 12}
    .card.featured{grid-column:span 12;flex-direction:column}
    .card.featured .card-media{aspect-ratio:16/9;min-height:0;flex:none;border-right:0;border-bottom:1px solid var(--border)}
    .card.featured .card-media svg{padding:12px}
    .nums,.impact .nums{grid-template-columns:repeat(2,1fr)}
    .body{grid-template-columns:1fr}
    .rail{position:static}
    .legend,.quotes{grid-template-columns:1fr}
    .related .grid .card{grid-column:span 12}
  }
  @media (max-width:560px){
    .nums,.impact .nums{grid-template-columns:1fr}
    .fig{grid-template-columns:1fr}
    .nav-links{display:none}
    .card{grid-column:span 12}
    .check{grid-template-columns:1fr;gap:4px}
  }
  @media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

  /* ROI band: the one place a study's value is stated, every figure tagged */
  .roi{margin-block:0 clamp(36px,5vw,64px);border:1px solid rgba(168,85,247,.45);border-radius:12px;background:linear-gradient(180deg,rgba(168,85,247,.12),rgba(168,85,247,.02) 70%);padding:clamp(20px,3vw,36px);display:grid;gap:28px}
  .roi .mono{color:var(--accent)}
  .roi-head h2{font-size:clamp(28px,3.4vw,44px);margin:10px 0 12px}
  .roi-head p{max-width:72ch;font-size:16px}
  .roi .nums{grid-template-columns:repeat(3,1fr)}
  .roi .num{border-top-color:rgba(168,85,247,.35)}
  .roi .num .v{font-size:clamp(34px,3.6vw,52px)}
  .roi .nums:has(.v.long) .v{font-size:min(clamp(34px,3.6vw,52px),15cqi)}
  .ev.public{color:var(--accent);border-color:rgba(168,85,247,.5)}
  .fig.one{grid-template-columns:1fr}
  @media (max-width:980px){.roi .nums{grid-template-columns:repeat(2,1fr)}}
  @media (max-width:560px){.roi .nums{grid-template-columns:1fr}}
  .d-media video{width:100%;display:block;aspect-ratio:16/9;object-fit:cover;background:var(--bg-alt)}
  .roi-index{margin-top:clamp(36px,5vw,64px)}
  .roi-index .nums{grid-template-columns:repeat(4,1fr)}
  @media (max-width:980px){.roi-index .nums{grid-template-columns:repeat(2,1fr)}}
  @media (max-width:560px){.roi-index .nums{grid-template-columns:1fr}}

/* Site nav additions for the public build */
.brand{display:inline-flex;align-items:center;gap:10px}
.brand img{display:block}
.nav-demo{color:var(--text);border:1px solid var(--border-hi);border-radius:999px;padding:6px 14px}
.nav-demo:hover{background:var(--text);color:var(--bg)}
footer a:hover{color:var(--text)}
.card-media picture,.d-media picture,.fig picture{display:block;height:100%}
.brand,.nav-links a{white-space:nowrap}
@media (max-width:1180px){.nav-links a:not(.nav-demo):not(:first-child){display:none}}
@media (max-width:640px){.brand span{display:none}}
@media (max-width:560px){.nav-links{display:flex}.nav-links a:not(.nav-demo){display:none}}