/* ============================================================
   SinghAi.io — stylesheet
   Design direction: "Spec sheet meets live console"
   Cool bone paper + ink, brand crimson for actions only,
   deep teal for live/data states, dark console bands.
   ============================================================ */

/* ---------- 1. Tokens ---------- */
:root{
  --paper:#F1F2EE;
  --paper-2:#E9EBE5;
  --card:#FBFBF9;
  --ink:#14181A;
  --slate:#5A6570;
  --slate-2:#8A929A;
  --crimson:#E8192C;
  --crimson-dark:#B8101F;
  --signal:#0E7C66;
  --signal-soft:#E2F0EC;
  --amber:#B4690E;
  --console:#0E1416;
  --console-2:#182226;
  --console-line:#243036;
  --rule:#D8DAD3;
  --rule-strong:#C2C6BC;

  --f-display:"Bricolage Grotesque","Segoe UI",sans-serif;
  --f-body:"Public Sans","Segoe UI",Helvetica,Arial,sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,"SF Mono",Menlo,monospace;

  --r:4px;
  --r-lg:8px;
  --shadow:0 1px 2px rgba(20,24,26,.05),0 8px 24px -12px rgba(20,24,26,.14);
  --shadow-lift:0 2px 4px rgba(20,24,26,.06),0 18px 44px -16px rgba(20,24,26,.24);
  --maxw:1180px;
  --gutter:clamp(1.15rem,4vw,3rem);
  --nav-h:64px;
}

/* ---------- 2. Reset & base ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  font-family:var(--f-body);
  background:var(--paper);
  color:var(--ink);
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
svg{display:block}

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

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:999;
  background:var(--ink);color:#fff;padding:.7rem 1.1rem;border-radius:0 0 var(--r) 0;
}
.skip-link:focus{left:0}

.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--gutter)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- 3. Type scale ---------- */
h1,h2,h3,h4{font-family:var(--f-display);font-weight:800;letter-spacing:-.022em;line-height:1.06}
h1{font-size:clamp(2.5rem,6.2vw,4.5rem)}
h2{font-size:clamp(1.95rem,4vw,3.05rem);line-height:1.08}
h3{font-size:clamp(1.15rem,1.9vw,1.4rem);line-height:1.2;letter-spacing:-.012em}
p{text-wrap:pretty}

.eyebrow{
  font-family:var(--f-mono);
  font-size:.7rem;
  font-weight:600;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--slate);
  display:flex;align-items:center;gap:.6rem;
}
.eyebrow::before{
  content:"";width:22px;height:2px;background:var(--crimson);flex:none;
}
.lede{font-size:clamp(1.02rem,1.5vw,1.2rem);color:var(--slate);max-width:60ch}

/* ---------- 4. Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55rem;
  padding:.82rem 1.4rem;
  border-radius:var(--r);
  font-weight:600;font-size:.95rem;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .15s ease,background .15s ease,border-color .15s ease,color .15s ease;
  text-align:center;
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--crimson);color:#fff}
.btn-primary:hover{background:var(--crimson-dark)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--rule-strong)}
.btn-ghost:hover{border-color:var(--ink);background:rgba(20,24,26,.03)}
.btn-onDark{background:transparent;color:#fff;border-color:rgba(255,255,255,.28)}
.btn-onDark:hover{border-color:#fff;background:rgba(255,255,255,.07)}
.btn-sm{padding:.55rem 1rem;font-size:.85rem}

/* ---------- 5. Navigation ---------- */
#nav{
  position:sticky;top:0;z-index:100;
  background:rgba(241,242,238,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--rule);
}
.nav-in{
  max-width:var(--maxw);margin:0 auto;padding-inline:var(--gutter);
  height:var(--nav-h);
  display:flex;align-items:center;gap:1.6rem;
}
.brand{display:flex;align-items:center;gap:.55rem;font-family:var(--f-display);font-weight:800;font-size:1.12rem;letter-spacing:-.02em}
.brand img{width:26px;height:26px;object-fit:contain}
.brand .accent{color:var(--crimson)}
.nav-links{display:flex;gap:.25rem;margin-left:auto;list-style:none}
.nav-links a{
  padding:.45rem .72rem;border-radius:var(--r);
  font-size:.9rem;font-weight:500;color:var(--slate);
  transition:color .15s ease,background .15s ease;
}
.nav-links a:hover{color:var(--ink);background:rgba(20,24,26,.045)}
.nav-links a.on{color:var(--ink);font-weight:600}
.nav-cta{margin-left:.4rem}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--rule-strong);border-radius:var(--r);padding:.45rem .7rem;cursor:pointer}

/* ---------- 6. Hero ---------- */
.hero{padding:clamp(2.8rem,7vw,5.2rem) 0 clamp(2.4rem,5vw,3.6rem)}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);
  gap:clamp(2rem,5vw,4rem);
  align-items:start;
}
.hero h1{margin:1.15rem 0 0}
.hero h1 .ital{font-style:italic;font-weight:700;color:var(--crimson)}
.hero-sub{margin-top:1.25rem;font-size:clamp(1.02rem,1.45vw,1.18rem);color:var(--slate);max-width:44ch}

/* plain-language "we do this" list */
.does{list-style:none;margin:1.6rem 0 0;border-top:1px solid var(--rule)}
.does li{
  display:grid;grid-template-columns:auto 1fr;gap:.85rem;align-items:baseline;
  padding:.72rem 0;border-bottom:1px solid var(--rule);
}
.does b{font-weight:650}
.does .k{
  font-family:var(--f-mono);font-size:.68rem;letter-spacing:.1em;
  color:var(--crimson);text-transform:uppercase;padding-top:.28rem;
}
.does span{color:var(--slate);font-size:.96rem}

.hero-actions{display:flex;flex-wrap:wrap;gap:.7rem;margin-top:1.7rem}
.hero-note{margin-top:1rem;font-size:.83rem;color:var(--slate-2);font-family:var(--f-mono)}

/* ---------- 7. Console (signature element) ---------- */
.console{
  background:var(--console);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-lift);
  border:1px solid var(--console-line);
  font-family:var(--f-mono);
  color:#C7D2D6;
}
.console-bar{
  display:flex;align-items:center;gap:.55rem;
  padding:.62rem .9rem;
  background:var(--console-2);
  border-bottom:1px solid var(--console-line);
  font-size:.72rem;letter-spacing:.06em;
}
.dot{width:9px;height:9px;border-radius:50%;flex:none}
.dot-r{background:#F05A5A}.dot-y{background:#E0B44A}.dot-g{background:#4FBF8B}
.console-title{margin-left:.4rem;color:#8FA0A6}
.console-live{
  margin-left:auto;display:flex;align-items:center;gap:.4rem;
  color:#4FBF8B;font-size:.68rem;letter-spacing:.1em;
}
.pulse{width:7px;height:7px;border-radius:50%;background:#4FBF8B;animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(79,191,139,.5)}50%{opacity:.55;box-shadow:0 0 0 5px rgba(79,191,139,0)}}

.sys-list{padding:.35rem 0}
.sys{
  display:grid;grid-template-columns:1fr auto auto;gap:.9rem;align-items:center;
  padding:.62rem .95rem;font-size:.79rem;
  border-bottom:1px solid rgba(36,48,54,.6);
}
.sys:last-child{border-bottom:0}
.sys-name{color:#E6EDEF;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sys-name small{display:block;color:#6F7F86;font-size:.68rem;font-weight:400;letter-spacing:.02em}
.sys-metric{color:#C7D2D6;font-variant-numeric:tabular-nums;font-size:.75rem}
.sys-badge{
  font-size:.63rem;letter-spacing:.1em;padding:.2rem .5rem;border-radius:99px;
  background:rgba(79,191,139,.14);color:#5FD09B;border:1px solid rgba(79,191,139,.28);
}
.sys-badge.build{background:rgba(224,180,74,.13);color:#E0B44A;border-color:rgba(224,180,74,.3)}

.logfeed{
  border-top:1px solid var(--console-line);
  background:#0A0F11;
  padding:.75rem .95rem .9rem;
  height:132px;overflow:hidden;
  font-size:.715rem;line-height:1.72;
}
.logfeed div{color:#7E8E95;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.logfeed .t{color:#4B5A61}
.logfeed .ok{color:#5FD09B}
.logfeed .wr{color:#E0B44A}
.logfeed .in{color:#7FB4D8}

/* ---------- 8. Section frame ---------- */
section{scroll-margin-top:calc(var(--nav-h) + 12px)}
.band{padding:clamp(3.2rem,7vw,5.6rem) 0}
.band-alt{background:var(--paper-2);border-block:1px solid var(--rule)}
.band-dark{background:var(--console);color:#DCE4E6}
.band-dark h2,.band-dark h3{color:#fff}
.band-dark .eyebrow{color:#8FA0A6}
.band-dark .lede{color:#9FAEB4}

.sec-head{max-width:62ch;margin-bottom:clamp(1.8rem,3.4vw,2.8rem)}
.sec-head h2{margin:.85rem 0 .8rem}
.sec-head-row{display:flex;flex-wrap:wrap;gap:1.4rem;align-items:end;justify-content:space-between}

/* ---------- 9. Capability cards ---------- */
.caps{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(268px,1fr));
  gap:1px;
  background:var(--rule);
  border:1px solid var(--rule);
  border-radius:var(--r-lg);
  overflow:hidden;
}
.cap{
  background:var(--card);
  padding:1.5rem 1.4rem 1.55rem;
  display:flex;flex-direction:column;gap:.62rem;
  transition:background .18s ease;
  position:relative;
}
.cap:hover{background:#fff}
.cap-icon{
  width:34px;height:34px;color:var(--crimson);
  stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;
}
.cap h3{margin-top:.15rem}
.cap p{font-size:.93rem;color:var(--slate)}
.cap .plain{
  font-size:.86rem;color:var(--ink);font-weight:550;
  padding:.5rem .65rem;background:var(--paper-2);border-left:2px solid var(--crimson);border-radius:0 var(--r) var(--r) 0;
}
.tags{display:flex;flex-wrap:wrap;gap:.35rem;margin-top:auto;padding-top:.55rem}
.tag{
  font-family:var(--f-mono);font-size:.66rem;letter-spacing:.04em;
  padding:.22rem .5rem;border:1px solid var(--rule-strong);border-radius:99px;color:var(--slate);
}
.band-dark .tag{border-color:var(--console-line);color:#8FA0A6}

/* ---------- 10. Pipeline explorer ---------- */
.pipe-tabs{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1.5rem}
.pipe-tab{
  font-family:var(--f-mono);font-size:.76rem;letter-spacing:.04em;
  padding:.5rem .9rem;border-radius:99px;cursor:pointer;
  background:transparent;border:1px solid var(--console-line);color:#9FAEB4;
  transition:all .16s ease;
}
.pipe-tab:hover{border-color:#48585F;color:#DCE4E6}
.pipe-tab[aria-selected="true"]{background:var(--crimson);border-color:var(--crimson);color:#fff}

.pipe-shell{
  border:1px solid var(--console-line);border-radius:var(--r-lg);
  background:var(--console-2);overflow:hidden;
}
.pipe-canvas{width:100%;height:auto;display:block;background:#0A0F11}
.pipe-stage-rect{cursor:pointer;transition:opacity .2s ease}
.pipe-detail{
  display:grid;grid-template-columns:1.15fr .85fr;gap:1px;
  background:var(--console-line);
}
.pipe-detail>div{background:var(--console-2);padding:1.25rem 1.3rem}
.pipe-detail h4{
  font-family:var(--f-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;
  color:#6F7F86;margin-bottom:.6rem;font-weight:600;
}
.pipe-detail .stage-name{font-family:var(--f-display);font-size:1.28rem;font-weight:800;color:#fff;margin-bottom:.45rem;letter-spacing:-.015em}
.pipe-detail p{font-size:.9rem;color:#9FAEB4}
.pipe-code{
  font-family:var(--f-mono);font-size:.735rem;line-height:1.8;
  color:#9FAEB4;white-space:pre;overflow-x:auto;
}
.pipe-code .c{color:#5A6B72}
.pipe-code .kw{color:#E88A8A}
.pipe-code .st{color:#8FD0A8}
.pipe-code .fn{color:#7FB4D8}
.pipe-meta{display:flex;flex-wrap:wrap;gap:1.4rem;margin-top:1rem;padding-top:1rem;border-top:1px solid var(--console-line)}
.pipe-meta div{font-family:var(--f-mono);font-size:.72rem;color:#6F7F86}
.pipe-meta b{display:block;font-size:1.05rem;color:#5FD09B;font-weight:600;margin-top:.15rem}

/* ---------- 11. Model training sandbox ---------- */
.lab{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);
  gap:1px;background:var(--rule);border:1px solid var(--rule);
  border-radius:var(--r-lg);overflow:hidden;
}
.lab>div{background:var(--card);padding:clamp(1.2rem,2.4vw,1.7rem)}
.lab-viz{background:#0A0F11 !important;display:flex;flex-direction:column;gap:.8rem}
.lab-canvas{width:100%;height:auto;border-radius:var(--r);background:#0A0F11}
.lab-readout{display:grid;grid-template-columns:repeat(3,1fr);gap:.7rem}
.ro{border:1px solid var(--console-line);border-radius:var(--r);padding:.55rem .7rem;background:var(--console-2)}
.ro span{font-family:var(--f-mono);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;color:#6F7F86;display:block}
.ro b{font-family:var(--f-mono);font-size:1.02rem;color:#5FD09B;font-variant-numeric:tabular-nums;font-weight:600}

.ctrl{margin-bottom:1.1rem}
.ctrl label{display:flex;justify-content:space-between;align-items:baseline;font-size:.85rem;font-weight:600;margin-bottom:.42rem}
.ctrl label i{font-family:var(--f-mono);font-style:normal;font-size:.78rem;color:var(--crimson);font-variant-numeric:tabular-nums}
.ctrl input[type=range]{width:100%;accent-color:var(--crimson);cursor:pointer}
.ctrl small{display:block;color:var(--slate-2);font-size:.78rem;margin-top:.3rem}
.seg{display:flex;gap:.4rem;flex-wrap:wrap}
.seg button:not(.btn){
  flex:1;min-width:90px;padding:.5rem .6rem;border-radius:var(--r);cursor:pointer;
  border:1px solid var(--rule-strong);background:transparent;font-size:.83rem;font-weight:550;
  transition:all .15s ease;
}
.seg button:not(.btn):hover{border-color:var(--ink)}
.seg button:not(.btn)[aria-pressed="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}

.lab-actions{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:1.4rem}
.lab-actions .btn{flex:1;justify-content:center;min-width:120px}
.ctrl-label{display:flex;justify-content:space-between;align-items:baseline;font-size:.85rem;font-weight:600;margin-bottom:.42rem}
.ctrl-label i{font-family:var(--f-mono);font-style:normal;font-size:.78rem;color:var(--crimson)}

/* ---------- 12. ROI calculator ---------- */
.roi{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.85fr);
  gap:1px;background:var(--rule);border:1px solid var(--rule);
  border-radius:var(--r-lg);overflow:hidden;
}
.roi>div{background:var(--card);padding:clamp(1.2rem,2.4vw,1.7rem)}
.roi-out{background:var(--ink) !important;color:#fff;display:flex;flex-direction:column;justify-content:center;gap:.5rem}
.roi-out .big{font-family:var(--f-display);font-size:clamp(2.1rem,5vw,3.1rem);font-weight:800;letter-spacing:-.03em;line-height:1;color:#fff}
.roi-out .big small{font-size:.42em;color:var(--slate-2);font-weight:600;letter-spacing:0}
.roi-out .cap-lbl{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:#9FAEB4}
.roi-split{display:grid;grid-template-columns:1fr 1fr;gap:.9rem;margin-top:1rem;padding-top:1rem;border-top:1px solid rgba(255,255,255,.14)}
.roi-split div span{font-family:var(--f-mono);font-size:.65rem;letter-spacing:.08em;text-transform:uppercase;color:#8A929A;display:block}
.roi-split div b{font-family:var(--f-mono);font-size:1.15rem;color:#5FD09B;font-variant-numeric:tabular-nums}
.roi-note{font-size:.78rem;color:#8A929A;margin-top:.9rem;line-height:1.5}

/* ---------- 13. Work / case studies ---------- */
.work{display:grid;gap:1.15rem;grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.case{
  background:var(--card);border:1px solid var(--rule);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.case:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);border-color:var(--rule-strong)}
.case.wide{grid-column:1/-1}
.case.wide .case-body{display:grid;grid-template-columns:1.25fr .75fr;gap:clamp(1.2rem,3vw,2.4rem);align-items:start}
.case-shot{
  aspect-ratio:16/8;background:var(--paper-2);position:relative;overflow:hidden;
  border-bottom:1px solid var(--rule);
}
.case.wide .case-shot{aspect-ratio:21/8}
.case-shot img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.case:hover .case-shot img{transform:scale(1.03)}
.case-shot.fallback{
  background:
    linear-gradient(135deg,rgba(232,25,44,.1),transparent 55%),
    repeating-linear-gradient(45deg,var(--paper-2) 0 12px,#E2E4DC 12px 24px);
}
.case-shot.fallback::after{
  content:attr(data-label);position:absolute;inset:auto 0 0 0;
  font-family:var(--f-mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--slate);padding:.7rem .9rem;
}
.case-flag{
  position:absolute;top:.75rem;left:.75rem;z-index:2;
  font-family:var(--f-mono);font-size:.62rem;letter-spacing:.11em;text-transform:uppercase;
  background:var(--ink);color:#fff;padding:.28rem .6rem;border-radius:var(--r);
}
.case-flag.live{background:var(--signal)}
.case-body{padding:1.35rem 1.35rem 1.5rem}
.case-cat{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.09em;text-transform:uppercase;color:var(--crimson);margin-bottom:.5rem}
.case h3{margin-bottom:.5rem}
.case p{font-size:.93rem;color:var(--slate)}
.case-nums{display:flex;flex-wrap:wrap;gap:1.3rem;margin-top:1rem;padding-top:.95rem;border-top:1px solid var(--rule)}
.case-nums div span{font-family:var(--f-mono);font-size:.64rem;letter-spacing:.08em;text-transform:uppercase;color:var(--slate-2);display:block}
.case-nums div b{font-family:var(--f-display);font-size:1.3rem;font-weight:800;letter-spacing:-.02em}
.case-link{
  display:inline-flex;align-items:center;gap:.4rem;margin-top:1rem;
  font-size:.88rem;font-weight:600;color:var(--crimson);
}
.case-link:hover{text-decoration:underline;text-underline-offset:3px}
.case-stack{display:flex;flex-wrap:wrap;gap:.35rem;margin-top:.9rem}

/* ---------- 14. Process ---------- */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(232px,1fr));gap:1.3rem}
.step{border-top:2px solid var(--ink);padding-top:1rem}
.step .wk{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--crimson);margin-bottom:.5rem}
.step h3{font-size:1.12rem;margin-bottom:.45rem}
.step p{font-size:.9rem;color:var(--slate)}

/* ---------- 15. Facts strip ---------- */
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1px;background:var(--rule);border-block:1px solid var(--rule)}
.fact{background:var(--paper);padding:1.5rem var(--gutter);text-align:left}
.fact b{display:block;font-family:var(--f-display);font-size:clamp(1.7rem,3.4vw,2.4rem);font-weight:800;letter-spacing:-.03em;line-height:1}
.fact span{display:block;font-size:.84rem;color:var(--slate);margin-top:.4rem}
.fact em{font-style:normal;color:var(--crimson)}

/* ---------- 16. Built-with ---------- */
.built{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center;margin-top:1.2rem}
.built span{
  font-family:var(--f-mono);font-size:.74rem;letter-spacing:.03em;
  padding:.42rem .8rem;border:1px solid var(--rule-strong);border-radius:99px;color:var(--slate);background:var(--card);
}

/* ---------- 17. Contact ---------- */
.contact-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(1.8rem,4vw,3.4rem);align-items:start}
.form{background:var(--card);border:1px solid var(--rule);border-radius:var(--r-lg);padding:clamp(1.3rem,2.6vw,1.9rem)}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:.9rem}
.field{margin-bottom:.95rem}
.field label{display:block;font-size:.82rem;font-weight:650;margin-bottom:.38rem}
.field label i{font-style:normal;color:var(--crimson)}
.field input,.field select,.field textarea{
  width:100%;padding:.7rem .8rem;border:1px solid var(--rule-strong);
  border-radius:var(--r);background:var(--paper);font-size:.93rem;
  transition:border-color .15s ease,background .15s ease;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--crimson);background:#fff}
.field textarea{min-height:112px;resize:vertical}
.field input[aria-invalid="true"],.field select[aria-invalid="true"],.field textarea[aria-invalid="true"]{border-color:var(--crimson);background:#FDF3F4}
.field .err{display:none;font-size:.78rem;color:var(--crimson);margin-top:.3rem}
.field .err.show{display:block}
.form-status{margin-top:.9rem;padding:.75rem .9rem;border-radius:var(--r);font-size:.87rem;display:none}
.form-status.show{display:block}
.form-status.ok{background:var(--signal-soft);color:#0A5F4E;border:1px solid #A9D6CA}
.form-status.bad{background:#FDF0F1;color:var(--crimson-dark);border:1px solid #F2C4C9}
.form-status.wait{background:var(--paper-2);color:var(--slate);border:1px solid var(--rule-strong)}

.contact-aside dl{margin-top:1.4rem;border-top:1px solid var(--rule)}
.contact-aside dt{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.11em;text-transform:uppercase;color:var(--slate-2);padding-top:.95rem}
.contact-aside dd{font-size:.98rem;padding-bottom:.95rem;border-bottom:1px solid var(--rule)}
.contact-aside dd a{color:var(--crimson);font-weight:600}
.contact-aside dd a:hover{text-decoration:underline;text-underline-offset:3px}

/* ---------- 18. Footer ---------- */
footer{background:var(--console);color:#9FAEB4;padding:3rem 0 2rem;font-size:.9rem}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:2rem}
footer h4{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:#6F7F86;margin-bottom:.85rem;font-weight:600}
footer ul{list-style:none;display:grid;gap:.45rem}
footer a:hover{color:#fff}
.foot-brand{display:flex;align-items:center;gap:.55rem;font-family:var(--f-display);font-weight:800;font-size:1.15rem;color:#fff;margin-bottom:.7rem}
.foot-brand img{width:26px;height:26px;object-fit:contain}
.foot-bottom{
  margin-top:2.4rem;padding-top:1.3rem;border-top:1px solid var(--console-line);
  display:flex;flex-wrap:wrap;gap:.8rem;justify-content:space-between;
  font-size:.8rem;color:#6F7F86;font-family:var(--f-mono);
}

/* ---------- 19. Reveal on scroll ---------- */
.rv{opacity:0;transform:translateY(14px);transition:opacity .55s ease,transform .55s ease}
.rv.in{opacity:1;transform:none}

/* ---------- 20. Responsive ---------- */
@media (max-width:960px){
  .hero-grid,.lab,.roi,.contact-grid,.pipe-detail,.case.wide .case-body{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  body{font-size:16px}
  .nav-links{
    display:none;position:absolute;top:var(--nav-h);left:0;right:0;
    flex-direction:column;gap:0;background:var(--paper);
    border-bottom:1px solid var(--rule);padding:.5rem var(--gutter) 1rem;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:.7rem .2rem;font-size:1rem}
  .nav-cta{display:none}
  .nav-toggle{display:block}
  .frow{grid-template-columns:1fr}
  .lab-readout{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr}
  .fact{padding:1.2rem var(--gutter)}
}

/* ---------- 21. Motion & print ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .rv{opacity:1;transform:none}
}
@media print{
  #nav,.console,.pipe-shell,.lab,.roi,footer{display:none}
  body{background:#fff;font-size:12pt}
}