:root{
    --pearl:#E9E3DE;      /* page background */
    --pearl-2:#F3EFEB;    /* raised cards */
    --sand:#E3C49B;       /* warm accent, buttons */
    --taupe:#A5937B;      /* secondary, borders, muted text */
    --lilac:#AF9AC9;      /* highlight word, links */
    --ink:#666161;        /* body text */
    --ink-2:#3F3B3B;      /* headings */
    --radius:22px;
    --radius-sm:14px;
    --radius-pill:999px;
    --radius-btn:10px;    /* buttons: softened rectangle, not a pill */
    --max:1180px;
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;background:var(--pearl);color:var(--ink);
    font-family:"Instrument Sans",system-ui,-apple-system,Segoe UI,sans-serif;
    font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased;
  }
  a{color:inherit}
  .mono{font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;letter-spacing:.08em;text-transform:uppercase}
  .wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

  /* nav */
  header{position:sticky;top:0;z-index:10;background:rgba(233,227,222,.85);backdrop-filter:blur(10px);border-bottom:1px solid rgba(165,147,123,.35)}
  nav{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
  .brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink-2);font-weight:600;white-space:nowrap}
  .brand svg{height:32px;width:32px;flex:none}
  nav ul{display:flex;gap:22px;list-style:none;margin:0;padding:0;white-space:nowrap}
  nav ul a{text-decoration:none;color:var(--ink)}
  nav ul a:hover{color:var(--ink-2)}
  .btn{display:inline-flex;align-items:center;gap:10px;background:var(--sand);color:var(--ink-2);text-decoration:none;font-weight:600;padding:12px 20px;border-radius:var(--radius-btn);border:1px solid rgba(102,97,97,.15);transition:transform .15s,background .15s}
  .btn:hover{background:#ECD2AE;transform:translateY(-1px)}
  .btn.ghost{background:transparent;border-color:var(--taupe)}
  .btn.ghost:hover{background:var(--pearl-2)}
  .btn.lilac{background:var(--lilac);color:#fff}
  .btn.lilac:hover{background:#BBA9D2}
  nav .btn{white-space:nowrap}
  @media (max-width:1040px){nav ul{display:none}}

  /* hero */
  .hero{padding:72px 0 56px}
  .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
  @media (max-width:900px){.hero-grid{grid-template-columns:1fr}}
  .eyebrow{color:var(--taupe);margin-bottom:22px}
  h1{font-size:clamp(44px,6vw,78px);line-height:.98;letter-spacing:-.02em;color:var(--ink-2);margin:0 0 26px;font-weight:700}
  h1 .hl{display:inline-block;background:var(--lilac);color:#fff;padding:0 .18em;border-radius:.22em;line-height:1.02}
  .lede{font-size:20px;max-width:560px;margin:0 0 30px}
  .hero-ctas{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
  .hero-note{margin-top:22px;color:var(--taupe)}

  .card{background:var(--pearl-2);border:1px solid rgba(165,147,123,.35);border-radius:var(--radius);padding:28px}
  .signup h3{margin:0 0 8px;color:var(--ink-2);font-size:20px}
  .signup p{margin:0 0 18px}
  .signup .btn{width:100%;justify-content:center;padding:16px 20px;font-size:17px}
  .signup .fine{margin:14px 0 0;font-size:14px;color:var(--taupe)}
  .rack{margin:0 0 22px;display:block;width:100%;height:auto}

  /* section chrome */
  section{padding:72px 0;border-top:1px solid rgba(165,147,123,.35)}
  .sec-head{display:flex;align-items:baseline;gap:18px;margin-bottom:34px}
  .sec-head .num{color:var(--taupe)}
  h2{font-size:clamp(30px,3.6vw,44px);line-height:1.05;letter-spacing:-.015em;color:var(--ink-2);margin:0}
  .two{display:grid;grid-template-columns:1fr 1fr;gap:40px}
  @media (max-width:820px){.two{grid-template-columns:1fr}}
  .prose p{margin:0 0 18px;max-width:62ch}
  .prose p:last-child{margin-bottom:0}

  /* hardware cards */
  .grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  @media (max-width:900px){.grid3{grid-template-columns:1fr}}
  .hw{padding:26px}
  .hw .tag{display:inline-block;background:var(--pearl);border:1px solid rgba(165,147,123,.4);border-radius:var(--radius-pill);padding:5px 11px;margin-bottom:16px}
  .hw h3{margin:0 0 10px;font-size:22px;color:var(--ink-2);line-height:1.15}
  .hw p{margin:0;font-size:16px}
  .hw ul{margin:14px 0 0;padding:0;list-style:none;font-size:15px;color:var(--ink)}
  .hw li{padding:8px 0;border-top:1px dashed rgba(165,147,123,.45)}

  /* hardware list */
  .hwlist{display:grid;gap:12px}
  .hwrow{display:grid;grid-template-columns:90px 1fr auto;align-items:center;gap:20px;padding:20px 26px}
  .hwrow .count{font-size:34px;font-weight:700;letter-spacing:-.02em;color:var(--lilac);line-height:1}
  .hwrow h3{margin:0 0 2px;font-size:21px;color:var(--ink-2);line-height:1.15}
  .hwrow p{margin:0;font-size:16px}
  .hwrow .tag{background:var(--pearl);border:1px solid rgba(165,147,123,.4);border-radius:var(--radius-pill);padding:5px 11px}
  @media (max-width:600px){.hwrow{grid-template-columns:64px 1fr}.hwrow .tags{display:none}.hwrow .count{font-size:26px}}

  /* audience */
  .who{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
  @media (max-width:820px){.who{grid-template-columns:1fr}}
  .who .card{display:flex;gap:16px;align-items:flex-start}
  .who .dot{flex:none;width:14px;height:14px;border-radius:50%;margin-top:7px}
  .who h3{margin:0 0 6px;font-size:19px;color:var(--ink-2)}
  .who p{margin:0;font-size:16px}

  /* tuesday */
  .tues{background:var(--sand);border-radius:var(--radius);padding:44px;display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:center;border:none}
  @media (max-width:820px){.tues{grid-template-columns:1fr;padding:30px}}
  .tues h2{margin-bottom:12px}
  .tues p{margin:0 0 8px;color:var(--ink-2);max-width:56ch}
  .when{background:var(--pearl-2);border-radius:var(--radius);padding:26px;text-align:center}
  .when .day{font-size:40px;line-height:1;color:var(--ink-2);font-weight:700;letter-spacing:-.02em}
  .when .time{margin:8px 0 18px;color:var(--ink)}

  /* contact */
  .contact{display:grid;grid-template-columns:1fr 1fr;gap:18px}
  @media (max-width:820px){.contact{grid-template-columns:1fr}}
  .contact .card{padding:34px}
  .contact h3{margin:0 0 10px;font-size:24px;color:var(--ink-2)}
  .contact p{margin:0 0 20px}
  .email{font-size:clamp(18px,2.2vw,24px);font-weight:600;color:var(--ink-2);text-decoration:none;border-bottom:2px solid var(--lilac);padding-bottom:2px;word-break:break-all}

  /* acknowledge */
  .ack{display:grid;grid-template-columns:1fr 1fr;gap:18px}
  @media (max-width:900px){.ack{grid-template-columns:1fr}}
  .ackblock{padding:0;overflow:hidden}
  .ackhead{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:16px 22px;border-bottom:1px solid rgba(165,147,123,.35);color:var(--taupe)}
  .ackblock pre{margin:0;padding:22px;font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13.5px;line-height:1.6;color:var(--ink-2);white-space:pre-wrap;word-break:break-word}
  .copy{font:inherit;font-size:13px;font-weight:600;color:var(--ink-2);background:var(--sand);border:1px solid rgba(102,97,97,.15);border-radius:var(--radius-btn);padding:7px 14px;cursor:pointer;transition:background .15s}
  .copy:hover{background:#ECD2AE}
  .copy.done{background:var(--lilac);color:#fff}

  footer{border-top:1px solid rgba(165,147,123,.35);padding:34px 0 48px;color:var(--taupe);font-size:14px}
  .foot{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;align-items:center}
  footer a{color:var(--taupe);text-decoration:none}
  footer a:hover{color:var(--ink-2)}

/* hero visual (GPU module) */
.hero-visual{position:relative}
.hero-visual .glow{position:absolute;inset:8% 6%;background:radial-gradient(closest-side,rgba(175,154,201,.35),rgba(175,154,201,0));border-radius:50%;z-index:0}
.hero-visual svg{position:relative;z-index:1;width:100%;height:auto;display:block;filter:drop-shadow(0 18px 30px rgba(102,97,97,.18))}
.hero-visual .caption{position:relative;z-index:1;margin:14px 0 0;text-align:center;color:var(--taupe)}

/* access band under the hero */
.band{background:var(--pearl-2);border:1px solid rgba(165,147,123,.35);border-radius:var(--radius);padding:26px 30px;display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:space-between;margin-bottom:24px}
.band h3{margin:0 0 4px;font-size:20px;color:var(--ink-2)}
.band p{margin:0}
.band .actions{display:flex;flex-wrap:wrap;gap:12px}

/* subpages */
.page-head{padding:64px 0 34px}
.page-head h1{font-size:clamp(38px,5vw,64px)}
.page-head .lede{max-width:64ch}
nav ul a.active{color:var(--ink-2);font-weight:600}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}

/* full-height hero on its own background */
header{background:rgba(255,255,255,.82)}
.hero-band{background:#FFFFFF;border-bottom:1px solid rgba(165,147,123,.35)}
.hero-band .wrap{min-height:calc(100vh - 68px);display:flex;flex-direction:column;justify-content:center;position:relative;padding-top:24px;padding-bottom:64px}
.hero{padding:0}
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;width:100%}
@media (max-width:900px){.hero{grid-template-columns:1fr}}
.hero-rack{display:flex;justify-content:center;align-items:center}
.hero-rack img{display:block;height:min(72vh,720px);width:auto;max-width:100%;object-fit:contain;
  -webkit-mask-image:linear-gradient(to bottom,#000 86%,transparent 100%);mask-image:linear-gradient(to bottom,#000 86%,transparent 100%)}
@media (max-width:900px){.hero-rack img{height:min(52vh,460px)}}
.scroll-cue{position:absolute;left:24px;bottom:22px;color:var(--taupe);text-decoration:none}
.scroll-cue:hover{color:var(--ink-2)}
section#cluster{border-top:none}

/* 3D GPU model in the hero */
.hero-model-wrap{display:flex;flex-direction:column;align-items:center}
.hero-model{position:relative;width:100%;max-width:640px;aspect-ratio:1/1;height:auto;max-height:min(72vh,640px)}
.hero-model canvas{position:absolute;inset:0;width:100%!important;height:100%!important;display:block;cursor:grab}
.hero-model canvas:active{cursor:grabbing}
.hero-model .fallback{position:absolute;inset:12%;width:76%;height:auto;display:block}
.hero-model.ready .fallback{display:none}
.model-hint{margin:6px 0 0;color:var(--taupe)}
.hero-model:not(.ready) + .model-hint{visibility:hidden}
@media (max-width:900px){.hero-model{max-width:420px;max-height:52vh}}

/* node status pills */
.hwrow .tags{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.hwrow .tag.live{background:var(--lilac);color:#fff;border-color:transparent}
@media (max-width:600px){.hwrow .tags{display:none}}

/* the hero section on a dark warm ground; navigation bar and the rest of the page unchanged */
.hero-band{background:#3F3B3B;border-bottom:1px solid #2F2C2C}
.hero-band h1{color:var(--pearl-2)}
.hero-band .lede{color:#D9D1CB}
.hero-band .eyebrow{color:var(--sand)}
.hero-band .btn.ghost{color:var(--pearl-2);border-color:rgba(233,227,222,.45)}
.hero-band .btn.ghost:hover{background:rgba(255,255,255,.08)}
.hero-band .model-hint,.hero-band .scroll-cue{color:#B8AFA7}
.hero-band .scroll-cue:hover{color:var(--pearl-2)}

/* grid layout: every section sits on a 12-column grid with the label in a left rail */
.grid12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:24px;row-gap:28px;align-items:start}
.rail{grid-column:1/3;display:flex;flex-direction:column;gap:6px;color:var(--taupe);padding-top:6px;border-right:1px solid rgba(165,147,123,.35);min-height:100%}
.rail .num{font-size:28px;font-weight:700;letter-spacing:-.02em;color:var(--ink-2);line-height:1}
.col-main{grid-column:3/10;min-width:0}
.col-main h2{margin:0 0 26px}
.col-side{grid-column:10/13;min-width:0}
.col-wide{grid-column:3/13;min-width:0}
.facts{list-style:none;margin:0;padding:0;border-top:1px solid rgba(165,147,123,.35)}
.facts li{display:grid;grid-template-columns:1fr auto;gap:12px;padding:10px 0;border-bottom:1px solid rgba(165,147,123,.35);font-size:15px}
.facts li span:last-child{color:var(--ink-2);font-weight:600;text-align:right;white-space:nowrap}
.facts li a{color:var(--ink-2)}
section{padding:64px 0}
@media (max-width:900px){
  .grid12{display:block}
  .rail{border-right:0;border-bottom:1px solid rgba(165,147,123,.35);flex-direction:row;align-items:baseline;gap:14px;padding:0 0 10px;margin-bottom:22px}
  .col-side{margin-top:28px}
}
/* hardware as a ledger: rows on the grid, hairlines instead of cards */
.ledger{border-top:1px solid rgba(165,147,123,.35)}
.ledger .row{display:grid;grid-template-columns:70px 2fr 3fr auto;gap:20px;align-items:center;padding:16px 0;border-bottom:1px solid rgba(165,147,123,.35)}
.ledger .count{font-size:26px;font-weight:700;letter-spacing:-.02em;color:var(--lilac);line-height:1;font-variant-numeric:tabular-nums}
.ledger h3{margin:0;font-size:19px;color:var(--ink-2);line-height:1.15}
.ledger p{margin:0;font-size:15px}
.ledger .tags{display:flex;gap:8px;justify-content:flex-end}
.ledger .tag{background:var(--pearl-2);border:1px solid rgba(165,147,123,.4);border-radius:var(--radius-pill);padding:4px 10px}
.ledger .tag.live{background:var(--lilac);color:#fff;border-color:transparent}
@media (max-width:700px){.ledger .row{grid-template-columns:52px 1fr}.ledger .row p{grid-column:2}.ledger .tags{grid-column:2;justify-content:flex-start}}

/* the "how to apply" steps on a sand band */
section.apply{background:var(--sand);border-top:none;padding:64px 0}
section.apply .sec-head .num,section.apply .prose p{color:var(--ink-2)}
section.apply .prose a{color:var(--ink-2)}