/* ---- reset ---- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
img,svg{display:block;max-width:100%}
button,input{font:inherit;color:inherit}

/* ============ tokens: light (machine on a desk, daylight) ============ */
:root{
  --ground:#CFC7B2;
  --panel:#DED8C7;
  --panel-2:#C7BFA9;
  --screen:#F7F5EF;
  --screen-ink:#17131F;
  --screen-line:rgba(23,19,31,.14);
  --ink:#17131F;
  --ink-2:#4E4659;
  --ink-3:#5E5569;
  --line:#17131F;
  --line-soft:rgba(23,19,31,.24);
  --violet:#4A1FE0;
  --violet-ink:#3512A8;
  --violet-wash:rgba(74,31,224,.10);
  --on-bg:#4A1FE0;
  --on-ink:#FFFFFF;
  --alarm:#C42B22;
  --good:#146B41;
  --shadow:#17131F;
  --chip:#17131F;
  --chip-ink:#F7F5EF;
  --lcd:#EFEDE4;
  --lcd-ink:#241C33;

  --max:1140px;
  --step--1:clamp(.78rem,.76rem + .1vw,.84rem);
  --step-0:clamp(1rem,.97rem + .16vw,1.09rem);
  --step-1:clamp(1.2rem,1.13rem + .34vw,1.42rem);
  --step-2:clamp(1.5rem,1.35rem + .72vw,2.05rem);
  --step-3:clamp(2rem,1.66rem + 1.68vw,3.3rem);
  --step-4:clamp(2.6rem,1.9rem + 3.4vw,5.4rem);
}
/* dark: same machine, unlit studio — the CRT stays on */
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --ground:#100826;
    --panel:#1C1140;
    --panel-2:#150C33;
    --screen:#EFECE2;
    --screen-ink:#17131F;
    --screen-line:rgba(23,19,31,.13);
    --ink:#ECE6F7;
    --ink-2:#B3A9CC;
    --ink-3:#8B81A6;
    --line:#5240A0;
    --line-soft:rgba(236,230,247,.2);
    --violet:#8C6BFF;
    --violet-ink:#B49CFF;
    --violet-wash:rgba(140,107,255,.14);
    --on-bg:#5A2BF0;
    --on-ink:#FFFFFF;
    --alarm:#FF6154;
    --good:#4FD494;
    --shadow:#05010F;
    --chip:#ECE6F7;
    --chip-ink:#100826;
    --lcd:#0C1A14;
    --lcd-ink:#7CF0B4;
  }
}
:root[data-theme="dark"]{
  --ground:#100826;
  --panel:#1C1140;
  --panel-2:#150C33;
  --screen:#EFECE2;
  --screen-ink:#17131F;
  --screen-line:rgba(23,19,31,.13);
  --ink:#ECE6F7;
  --ink-2:#B3A9CC;
  --ink-3:#8B81A6;
  --line:#5240A0;
  --line-soft:rgba(236,230,247,.2);
  --violet:#8C6BFF;
  --violet-ink:#B49CFF;
  --violet-wash:rgba(140,107,255,.14);
  --alarm:#FF6154;
  --good:#4FD494;
  --shadow:#05010F;
  --chip:#ECE6F7;
  --chip-ink:#100826;
  --lcd:#0C1A14;
  --lcd-ink:#7CF0B4;
  --on-bg:#5A2BF0;
  --on-ink:#FFFFFF;
}

*{box-sizing:border-box}
body{
  margin:0;
  background:var(--ground);
  color:var(--ink);
  font-family:"Spline Sans","Helvetica Neue",Arial,sans-serif;
  font-size:var(--step-0);
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.display{
  font-family:"Archivo","Helvetica Neue",Arial,sans-serif;
  font-variation-settings:"wdth" 125,"wght" 800;
  font-weight:800;
  line-height:.94;
  letter-spacing:-.015em;
  text-wrap:balance;
  margin:0;
}
p{margin:0}
a{color:var(--violet-ink);text-decoration-thickness:1px;text-underline-offset:.16em}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--violet);outline-offset:3px}

.mono{font-family:"Spline Sans Mono",ui-monospace,SFMono-Regular,Menlo,monospace}
.stencil{
  font-family:"Spline Sans Mono",ui-monospace,monospace;
  font-size:.7rem;font-weight:600;
  letter-spacing:.2em;text-transform:uppercase;
  color:var(--ink-3);
}
.tnum{font-variant-numeric:tabular-nums}

.wrap{max-width:var(--max);margin-inline:auto;padding-inline:clamp(16px,4vw,32px)}
.stack{display:flex;flex-direction:column}

/* ============ panel: the page is a stack of plates ============ */
.panel{
  position:relative;
  background:var(--panel);
  border:2px solid var(--line);
  box-shadow:6px 6px 0 var(--shadow);
  padding:clamp(22px,4vw,44px);
}
.panel--recess{background:var(--panel-2);box-shadow:inset 3px 3px 0 rgba(0,0,0,.10)}
.panel__tag{
  position:absolute;top:-2px;left:clamp(18px,4vw,34px);
  transform:translateY(-50%);
  background:var(--chip);color:var(--chip-ink);
  font-family:"Spline Sans Mono",ui-monospace,monospace;
  font-size:.66rem;font-weight:600;letter-spacing:.22em;text-transform:uppercase;
  padding:.3em .8em;
}
section{margin-block:clamp(30px,6vw,64px)}

/* ============ header ============ */
.top{
  border-bottom:2px solid var(--line);
  background:var(--panel);
}
.top__in{display:flex;align-items:center;justify-content:space-between;gap:18px;padding-block:12px;flex-wrap:wrap}
.brandmark{display:flex;align-items:center;gap:11px;text-decoration:none;color:inherit}
.brandmark img{width:34px;height:34px;border:2px solid var(--line);display:block}
.brandmark b{font-family:"Archivo",sans-serif;font-variation-settings:"wdth" 125,"wght" 800;font-size:1.02rem;letter-spacing:.01em}
.top nav{display:flex;gap:clamp(10px,2vw,22px);flex-wrap:wrap}
.top nav a{color:var(--ink-2);text-decoration:none;font-size:.82rem;letter-spacing:.08em;text-transform:uppercase;font-family:"Spline Sans Mono",monospace}
.top nav a:hover{color:var(--violet-ink)}

/* ============ hero ============ */
.hero{padding-top:clamp(30px,6vw,66px)}
.hero__grid{display:grid;grid-template-columns:1.35fr .85fr;gap:clamp(24px,4vw,54px);align-items:start}
.eyebrow{display:flex;align-items:center;gap:10px;margin-bottom:20px;flex-wrap:wrap}
.dot{width:9px;height:9px;border-radius:50%;background:var(--alarm);box-shadow:0 0 0 3px var(--violet-wash);flex:none}
h1{font-size:var(--step-4)}
.hero__sub{font-size:var(--step-1);color:var(--ink-2);max-width:34ch;margin-top:22px;line-height:1.42}
.handle{
  display:inline-flex;align-items:center;gap:.5ch;
  margin-top:26px;padding:.5em .85em;
  background:var(--on-bg);color:var(--on-ink);
  border:2px solid var(--line);box-shadow:4px 4px 0 var(--shadow);
  font-family:"Spline Sans Mono",monospace;font-weight:600;font-size:clamp(1rem,.9rem+.5vw,1.32rem);
  text-decoration:none;
}
.handle:hover{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--shadow)}
.hero__art{position:relative}
.hero__art img{width:100%;height:auto;display:block;border:2px solid var(--line);box-shadow:6px 6px 0 var(--shadow)}
.hero__cap{margin-top:14px;font-size:.78rem;color:var(--ink-3);line-height:1.45}

/* readout strip */
.readouts{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:2px solid var(--line);margin-top:clamp(26px,4vw,44px);background:var(--panel);
  box-shadow:6px 6px 0 var(--shadow);
}
.readout{padding:14px 16px;border-right:2px solid var(--line)}
.readout:last-child{border-right:0}
.readout dt{font-family:"Spline Sans Mono",monospace;font-size:.63rem;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-3);margin-bottom:5px}
.readout dd{margin:0;font-family:"Archivo",sans-serif;font-variation-settings:"wdth" 118,"wght" 700;font-size:1.02rem;letter-spacing:.005em}
.readout--alarm dd{color:var(--alarm)}
.readout--live dd{color:var(--good)}
.readout--live dt::after{
  content:"";display:inline-block;width:7px;height:7px;border-radius:50%;
  background:var(--good);margin-left:7px;vertical-align:middle;
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.25}}
@media (prefers-reduced-motion:reduce){.readout--live dt::after{animation:none}}

/* ============ generic type helpers ============ */
.lede{font-size:var(--step-1);color:var(--ink-2);max-width:60ch;line-height:1.5}
.body{max-width:65ch;color:var(--ink-2)}
h2{font-size:var(--step-3);margin-bottom:14px}
h3{font-size:var(--step-1);font-variation-settings:"wdth" 118,"wght" 750}
.rule{height:2px;background:var(--line);border:0;margin:0}

/* ============ transcript / CRT ============ */
.crt{
  background:var(--screen);color:var(--screen-ink);
  border:2px solid var(--line);
  padding:clamp(18px,3vw,26px);
  position:relative;overflow:hidden;
}
.crt::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(to bottom,transparent 0 3px,var(--screen-line) 3px 4px);
  opacity:.5;
}
.tweet{display:grid;grid-template-columns:38px 1fr;gap:12px;position:relative;z-index:1}
.tweet + .tweet{margin-top:18px;padding-top:18px;border-top:1px dashed rgba(23,19,31,.28)}
.tweet__pfp{width:38px;height:38px;border:2px solid var(--screen-ink);display:block}
.tweet__pfp--anon{background:rgba(23,19,31,.10);display:grid;place-items:center;font-family:"Archivo",sans-serif;font-variation-settings:"wdth" 120,"wght" 800;font-size:.9rem;color:var(--screen-ink)}
.tweet__who{font-weight:600;font-size:.92rem;margin-bottom:2px}
.tweet__who span{color:rgba(23,19,31,.55);font-weight:400;font-family:"Spline Sans Mono",monospace;font-size:.82rem}
.tweet__body{font-size:.98rem;line-height:1.5;white-space:pre-wrap;word-break:break-word}
.tweet__body .m{color:#3512A8;font-weight:500}
.tweet__link{color:#3512A8;word-break:break-all}
.ok{color:#146B41;font-weight:600}

/* ============ steps ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:2px solid var(--line);box-shadow:6px 6px 0 var(--shadow);background:var(--panel)}
.step{padding:clamp(18px,2.4vw,26px);border-right:2px solid var(--line)}
.step:last-child{border-right:0}
.step__n{
  font-family:"Archivo",sans-serif;font-variation-settings:"wdth" 125,"wght" 800;
  font-size:2.4rem;line-height:1;color:var(--violet);margin-bottom:10px;
}
.step h3{font-size:1.04rem;margin-bottom:8px}
.step p{font-size:.92rem;color:var(--ink-2);line-height:1.55}

/* ============ THE PANEL: knobs vs sealed plates ============ */
.console{display:grid;grid-template-columns:1fr .92fr;gap:clamp(20px,3vw,36px);align-items:start}
.console__screen{margin-bottom:18px}
.preview-note{font-size:.74rem;color:var(--ink-3);margin-top:10px;font-family:"Spline Sans Mono",monospace}

.controls{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:4px}
.ctrl{border:2px solid var(--line);background:var(--panel-2);padding:14px}
.ctrl--wide{grid-column:1/-1}
.ctrl label,.ctrl .lbl{display:block;margin-bottom:8px}
.field{
  width:100%;background:var(--lcd);color:var(--lcd-ink);
  border:2px solid var(--line);padding:.55em .7em;
  font-family:"Spline Sans Mono",monospace;font-size:1rem;font-weight:500;letter-spacing:.02em;
}
.field::placeholder{color:var(--ink-3);opacity:.7}

.knobrow{display:flex;align-items:center;gap:16px}
.knob{
  --a:0deg;
  width:74px;height:74px;flex:none;border-radius:50%;
  border:2px solid var(--line);background:var(--panel);
  position:relative;cursor:pointer;padding:0;
  background-image:repeating-conic-gradient(from 0deg,var(--line-soft) 0 1.2deg,transparent 1.2deg 9deg);
  box-shadow:3px 3px 0 var(--shadow);
  transition:transform .12s ease;
}
.knob::before{
  content:"";position:absolute;inset:9px;border-radius:50%;
  background:var(--panel);border:1px solid var(--line-soft);
}
.knob::after{
  content:"";position:absolute;left:50%;top:11px;width:4px;height:26px;
  background:var(--alarm);transform-origin:50% 100%;
  transform:translateX(-50%) rotate(var(--a));
  transition:transform .28s cubic-bezier(.34,1.4,.5,1);
}
.knob:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--shadow)}
.knob__val{font-family:"Archivo",sans-serif;font-variation-settings:"wdth" 122,"wght" 800;font-size:1.5rem;line-height:1.05}
.knob__sub{font-size:.8rem;color:var(--ink-3);margin-top:2px}
.knob__hint{font-size:.72rem;color:var(--ink-3);font-family:"Spline Sans Mono",monospace;margin-top:6px}

.sealed{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.plate{
  position:relative;border:2px solid var(--line);background:var(--panel-2);
  padding:13px 14px 12px;
  background-image:repeating-linear-gradient(135deg,transparent 0 7px,var(--line-soft) 7px 8px);
}
.plate__in{position:relative;z-index:1}
.plate dt{font-family:"Spline Sans Mono",monospace;font-size:.62rem;letter-spacing:.17em;text-transform:uppercase;color:var(--ink-3)}
.plate dd{margin:3px 0 0;font-family:"Archivo",sans-serif;font-variation-settings:"wdth" 116,"wght" 750;font-size:1rem;line-height:1.15}
.screws{position:absolute;inset:5px;pointer-events:none}
.screws i{position:absolute;width:6px;height:6px;border-radius:50%;background:var(--panel);border:1px solid var(--line);}
.screws i::after{content:"";position:absolute;left:1px;right:1px;top:2px;height:1px;background:var(--line)}
.screws i:nth-child(1){left:0;top:0}
.screws i:nth-child(2){right:0;top:0}
.screws i:nth-child(3){left:0;bottom:0}
.screws i:nth-child(4){right:0;bottom:0}
.sealed__cap{
  grid-column:1/-1;display:flex;align-items:center;gap:8px;
  font-family:"Spline Sans Mono",monospace;font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--alarm);
  margin-top:2px;
}

/* ============ reserves ============ */
.res{display:grid;grid-template-columns:repeat(auto-fill,minmax(148px,1fr));gap:8px;margin-top:26px}
.res__i{border:2px solid var(--line);padding:10px 12px;background:var(--panel)}
.res__i--on{background:var(--on-bg);color:var(--on-ink);border-color:var(--line)}
.res__t{font-family:"Archivo",sans-serif;font-variation-settings:"wdth" 118,"wght" 800;font-size:1.02rem;letter-spacing:.01em}
.res__n{font-size:.78rem;color:var(--ink-3);line-height:1.3}
.res__i--on .res__n{color:rgba(255,255,255,.82)}

/* ============ spec table ============ */
.specwrap{overflow-x:auto;border:2px solid var(--line);box-shadow:6px 6px 0 var(--shadow);background:var(--panel)}
table{border-collapse:collapse;width:100%;min-width:520px}
th,td{text-align:left;padding:11px clamp(12px,2vw,18px);border-bottom:1px solid var(--line-soft);vertical-align:top}
tr:last-child th,tr:last-child td{border-bottom:0}
th{
  font-family:"Spline Sans Mono",monospace;font-weight:600;font-size:.68rem;
  letter-spacing:.15em;text-transform:uppercase;color:var(--ink-3);
  width:38%;white-space:nowrap;
}
td{font-size:.94rem}

/* ============ two-column lists ============ */
.cols{display:grid;grid-template-columns:1fr 1fr;gap:clamp(20px,3vw,40px)}
.list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:13px}
.list li{display:grid;grid-template-columns:auto 1fr;gap:11px;font-size:.95rem;color:var(--ink-2);line-height:1.5}
.list li::before{content:"";width:9px;height:9px;background:var(--violet);margin-top:.5em}
.list--no li::before{background:var(--alarm)}
.list b{color:var(--ink);font-weight:600}

/* ============ faq ============ */
.faq{display:grid;gap:0;border:2px solid var(--line);box-shadow:6px 6px 0 var(--shadow);background:var(--panel)}
.faq details{border-bottom:2px solid var(--line)}
.faq details:last-child{border-bottom:0}
.faq summary{
  cursor:pointer;padding:16px clamp(16px,2.4vw,24px);
  font-family:"Archivo",sans-serif;font-variation-settings:"wdth" 116,"wght" 700;font-size:1.02rem;
  display:flex;justify-content:space-between;gap:16px;align-items:center;list-style:none;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:"Spline Sans Mono",monospace;color:var(--violet);font-size:1.3rem;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq p{padding:0 clamp(16px,2.4vw,24px) 18px;color:var(--ink-2);font-size:.95rem;max-width:70ch}

/* ============ cta + footer ============ */
.cta{text-align:center;padding-block:clamp(34px,6vw,60px)}
.cta h2{margin-bottom:18px}
.cta .body{margin-inline:auto;text-align:center}
footer{border-top:2px solid var(--line);margin-top:clamp(34px,6vw,60px);padding-block:26px 40px}
.foot{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:flex-start}
.foot p{font-size:.8rem;color:var(--ink-3);max-width:48ch;line-height:1.55}
.foot nav{display:flex;gap:18px;flex-wrap:wrap}
.foot nav a{font-family:"Spline Sans Mono",monospace;font-size:.8rem}

/* ============ motion ============ */
.rise{opacity:0;transform:translateY(18px)}
.rise.in{opacity:1;transform:none;transition:opacity .6s ease,transform .6s cubic-bezier(.22,.7,.3,1)}
@media (prefers-reduced-motion:reduce){
  .rise,.rise.in{opacity:1;transform:none;transition:none}
  .knob::after{transition:none}
  .handle:hover{transform:none}
}

/* ============ responsive ============ */
@media (max-width:960px){
  .hero__grid{grid-template-columns:1fr}
  .hero__art{max-width:340px}
  .console{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .step:nth-child(2){border-right:0}
  .step:nth-child(1),.step:nth-child(2){border-bottom:2px solid var(--line)}
  .readouts{grid-template-columns:1fr 1fr}
  .readout:nth-child(2){border-right:0}
  .readout:nth-child(1),.readout:nth-child(2){border-bottom:2px solid var(--line)}
  .cols{grid-template-columns:1fr}
}
@media (max-width:600px){
  .steps{grid-template-columns:1fr}
  .step{border-right:0;border-bottom:2px solid var(--line)}
  .step:last-child{border-bottom:0}
  .controls{grid-template-columns:1fr}
  .sealed{grid-template-columns:1fr}
  .panel{box-shadow:4px 4px 0 var(--shadow)}
}