/* ============================================================
   Core Forged
   Palette derived from steel tempering colors — the oxide
   shades steel turns as it is drawn back from hard to tough.
   Each discipline is keyed to one temperature.
   ============================================================ */
:root{
  --graphite:#14161a;
  --graphite-2:#1b1f26;
  --graphite-3:#272c35;
  --mill:#e4e6e9;      /* mill-finish light ground */
  --mill-2:#d3d7dc;
  --pale:#eef0f2;
  --steel:#8d959f;

  --t-straw:#e3b24a;   /* 205C  A/V */
  --t-bronze:#c0703a;  /* 245C  Networking */
  --t-plum:#8a5a94;    /* 280C  Cloud */
  --t-blue:#3e68a8;    /* 300C  Security */
  --t-slate:#5c8189;   /* 340C  Compute */

  --display:"Archivo","Arial Narrow",sans-serif;
  --body:"IBM Plex Sans",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;

  --gut:clamp(20px,5vw,64px);
  --temper:linear-gradient(90deg,var(--t-straw),var(--t-bronze) 27%,var(--t-plum) 52%,var(--t-blue) 76%,var(--t-slate));
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--graphite);color:var(--pale);
  font-family:var(--body);font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit}
img,svg{display:block;max-width:100%}

.wrap{max-width:1180px;margin:0 auto;padding:0 var(--gut)}

/* ambient scaffold — pixels folding into shapes behind the dark sections */
#scaffold{position:fixed;inset:0;z-index:0;pointer-events:none}
main,footer{position:relative;z-index:1}

h1,h2,h3,.disp{
  font-family:var(--display);font-weight:800;
  font-variation-settings:"wdth" 118;
  text-transform:uppercase;letter-spacing:-.015em;line-height:.94;
  margin:0;
}
.eyebrow{
  font-family:var(--mono);font-size:11px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--steel);margin:0 0 18px;
}
.lede{font-size:clamp(17px,2vw,21px);line-height:1.5;color:#c4c9cf;max-width:46ch}

:focus-visible{outline:2px solid var(--t-straw);outline-offset:3px}

/* ---------- scroll temper bar + header ---------- */
.bar{position:fixed;inset:0 0 auto;height:3px;z-index:60;background:rgba(255,255,255,.07)}
.bar i{display:block;height:100%;width:0;background:var(--temper)}

header.top{
  position:fixed;top:3px;left:0;right:0;z-index:50;
  backdrop-filter:blur(10px);background:rgba(20,22,26,.78);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.top .wrap{display:flex;align-items:center;gap:28px;height:62px}
.mark{display:flex;align-items:center;gap:10px;text-decoration:none;margin-right:auto}
.mark svg{width:22px;height:22px}
.mark b{
  font-family:var(--display);font-weight:800;font-variation-settings:"wdth" 112;
  text-transform:uppercase;letter-spacing:.06em;font-size:15px;
}
.top nav{display:flex;gap:26px}
.top nav a{
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  text-decoration:none;color:var(--steel);padding:4px 0;
}
.top nav a:hover{color:var(--pale)}
.top .btn{margin-left:6px}
@media(max-width:880px){.top nav{display:none}}

.btn{
  display:inline-block;font-family:var(--mono);font-size:12px;letter-spacing:.1em;
  text-transform:uppercase;text-decoration:none;padding:11px 18px;cursor:pointer;
  background:transparent;border:1px solid rgba(255,255,255,.28);color:var(--pale);
  transition:background .18s,border-color .18s,color .18s;
}
.btn:hover{background:var(--pale);color:var(--graphite);border-color:var(--pale)}
.btn.dark{border-color:rgba(0,0,0,.35);color:var(--graphite)}
.btn.dark:hover{background:var(--graphite);color:var(--mill);border-color:var(--graphite)}

/* ---------- hero ---------- */
.hero{padding:150px 0 84px;position:relative;overflow:hidden}
.hero::after{ /* faint forge glow, kept almost subliminal */
  content:"";position:absolute;left:-10%;top:-30%;width:70%;height:120%;
  background:radial-gradient(closest-side,rgba(192,112,58,.13),transparent 70%);
  pointer-events:none;
}
.hero .wrap{position:relative}
h1{font-size:clamp(46px,10.5vw,124px)}
h1 .thin{font-weight:400;font-variation-settings:"wdth" 100;display:block}
.hero .lede{margin:26px 0 0}

/* scale instrument — the signature element */
.inst{
  margin-top:56px;border:1px solid rgba(255,255,255,.12);
  background:rgba(27,31,38,.86);backdrop-filter:blur(2px);
}
.inst-head{
  display:flex;flex-wrap:wrap;gap:8px 18px;align-items:baseline;
  padding:16px 20px;border-bottom:1px solid rgba(255,255,255,.1);
}
.inst-head .k{font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--steel)}
.inst-head .v{font-family:var(--display);font-weight:800;font-variation-settings:"wdth" 112;text-transform:uppercase;font-size:clamp(17px,2.4vw,24px);margin-left:auto;text-align:right}
.inst-body{display:grid;grid-template-columns:1.05fr 1fr;gap:0}
@media(max-width:760px){.inst-body{grid-template-columns:1fr}}
.inst-pad{padding:22px 20px 26px}
.inst-body>.inst-pad+.inst-pad{border-left:1px solid rgba(255,255,255,.1)}
@media(max-width:760px){.inst-body>.inst-pad+.inst-pad{border-left:0;border-top:1px solid rgba(255,255,255,.1)}}

.slider{width:100%;margin:6px 0 20px;-webkit-appearance:none;appearance:none;background:transparent;height:34px;cursor:ew-resize}
.slider::-webkit-slider-runnable-track{height:6px;background:var(--temper);border-radius:0}
.slider::-moz-range-track{height:6px;background:var(--temper)}
.slider::-webkit-slider-thumb{
  -webkit-appearance:none;width:14px;height:26px;margin-top:-10px;border-radius:1px;
  background:var(--pale);border:1px solid var(--graphite);box-shadow:0 0 0 3px rgba(20,22,26,.9);
}
.slider::-moz-range-thumb{width:14px;height:26px;border-radius:1px;background:var(--pale);border:1px solid var(--graphite)}

.ticks{display:flex;justify-content:space-between;font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--steel)}
.ticks span{cursor:pointer}
.ticks span[aria-current="true"]{color:var(--pale)}
.site{font-size:15px;color:#c4c9cf;margin:20px 0 0;min-height:3.2em}
.deliv{list-style:none;margin:0;padding:0}
.deliv li{
  font-family:var(--mono);font-size:12.5px;line-height:1.5;letter-spacing:.02em;
  padding:9px 0 9px 16px;border-bottom:1px solid rgba(255,255,255,.08);
  position:relative;color:#cfd4d9;
}
.deliv li:last-child{border-bottom:0}
.deliv li::before{content:"";position:absolute;left:0;top:16px;width:6px;height:1px;background:var(--live,var(--t-straw));transition:background .2s}

/* ---------- light section shell ---------- */
.light{background:var(--mill);color:var(--graphite)}
.light .eyebrow{color:#6b727b}
.sect{padding:clamp(64px,9vw,116px) 0}
.sect-head{max-width:56ch;margin-bottom:clamp(36px,5vw,60px)}
.sect-head h2{font-size:clamp(30px,5.4vw,58px)}
.sect-head p{font-size:clamp(16px,1.7vw,19px);line-height:1.55;margin:20px 0 0;color:#4a515a;max-width:52ch}

/* ---------- disciplines ---------- */
.disc{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:1px;background:var(--mill-2)}
.card{background:var(--mill);padding:26px 24px 30px;position:relative;transition:background .2s}
.card:hover{background:#eceef0}
.card .temp{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;color:#787f88}
.card h3{font-size:clamp(20px,2.2vw,25px);margin:14px 0 0;max-width:14ch}
.card p{font-size:15px;line-height:1.5;color:#4a515a;margin:12px 0 18px}
.card ul{list-style:none;margin:0;padding:0}
.card li{font-size:13.5px;line-height:1.45;color:#3c434c;padding:6px 0 6px 14px;position:relative}
.card li::before{content:"";position:absolute;left:0;top:13px;width:5px;height:5px;background:var(--c)}
.card::before{content:"";position:absolute;left:0;top:0;width:100%;height:3px;background:var(--c)}
.card:nth-child(1){--c:var(--t-straw)}
.card:nth-child(2){--c:var(--t-bronze)}
.card:nth-child(3){--c:var(--t-plum)}
.card:nth-child(4){--c:var(--t-blue)}
.card:nth-child(5){--c:var(--t-slate)}

/* ---------- z-wave band ---------- */
.zwave{background:transparent;border-top:1px solid rgba(255,255,255,.08)}
.zwave .eyebrow{color:var(--t-straw)}
.zgrid{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(32px,5vw,64px);align-items:start}
@media(max-width:860px){.zgrid{grid-template-columns:1fr}}
.zwave h2{font-size:clamp(30px,5vw,54px)}
.zwave .lede{margin:22px 0 30px}
.zlist{list-style:none;margin:0;padding:0;border-top:1px solid rgba(255,255,255,.12)}
.zlist li{padding:18px 0;border-bottom:1px solid rgba(255,255,255,.12);display:grid;grid-template-columns:112px 1fr;gap:20px}
@media(max-width:560px){.zlist li{grid-template-columns:1fr;gap:6px}}
.zlist b{font-family:var(--mono);font-weight:500;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--t-straw);padding-top:3px}
.zlist span{font-size:15px;line-height:1.55;color:#c4c9cf}

.mesh{border:1px solid rgba(255,255,255,.12);background:rgba(27,31,38,.86);backdrop-filter:blur(2px);padding:20px}
.mesh figcaption{font-family:var(--mono);font-size:11px;line-height:1.6;letter-spacing:.04em;color:var(--steel);margin-top:16px}
.hop{stroke-dasharray:3 5;animation:flow 2.4s linear infinite}
@keyframes flow{to{stroke-dashoffset:-32}}

/* ---------- process ---------- */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:1px;background:var(--mill-2);border-top:1px solid var(--mill-2)}
.step{background:var(--mill);padding:24px 22px 28px}
.step .n{font-family:var(--display);font-weight:800;font-variation-settings:"wdth" 100;font-size:34px;color:#a9b0b8;line-height:1}
.step h3{font-size:17px;margin:12px 0 8px}
.step p{font-size:14px;line-height:1.5;color:#4a515a;margin:0}

/* ---------- contact ---------- */
.contact{background:rgba(27,31,38,.8);border-top:1px solid rgba(255,255,255,.08)}
.cgrid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,64px)}
@media(max-width:820px){.cgrid{grid-template-columns:1fr}}
.contact h2{font-size:clamp(28px,4.6vw,50px)}
.field{display:block;margin-bottom:16px}
.field span{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--steel);margin-bottom:7px}
.field input,.field select,.field textarea{
  width:100%;background:var(--graphite);border:1px solid rgba(255,255,255,.16);
  color:var(--pale);font-family:var(--body);font-size:15px;padding:11px 13px;border-radius:0;
}
.field textarea{min-height:110px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--t-straw);outline:none}
.meta{list-style:none;margin:0;padding:0;font-family:var(--mono);font-size:13px;color:#c4c9cf}
.meta li{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.12)}
.meta em{color:var(--steel);font-style:normal;display:block;font-size:11px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:5px}

footer{padding:34px 0;border-top:1px solid rgba(255,255,255,.08);background:transparent}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px 26px;align-items:center;font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;color:var(--steel)}
footer .swatches{display:flex;gap:3px;margin-left:auto}
footer .swatches i{width:22px;height:6px;display:block}

.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .hop{animation:none}
}