/* ============================================================================
   BLINKENLIGHT — "instrument-grade precision" design system
   RF / lab test-equipment + engineering spec-sheet visual language.
   Palette anchored on the genuine BLINKENLIGHT marks (see GAPS.md):
     brand teal #5E8992 · signal teal #7DB6C2 · ice #B9DAE1
     parchment #DBC8B5 · rose #D89DA6
   Type: Archivo (display/body) + IBM Plex Mono (instrument data).
   ========================================================================== */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  /* ── genuine brand palette ── */
  --brand:#5E8992;        /* deep teal — existing site hero            */
  --accent:#7DB6C2;       /* signal teal — the logo mark               */
  --ice:#B9DAE1;          /* pale ice — bright trace / glow on dark     */
  --sand:#DBC8B5;         /* parchment — warm annotation / amber readout*/
  --rose:#D89DA6;         /* dusty rose — single sparing live marker    */

  /* ── instrument neutrals (extended, anchored on brand — see GAPS) ── */
  --instr:#0C1316;        /* deepest — instrument fascia bg            */
  --instr-2:#10191D;      /* instrument section bg                     */
  --panel:#13212600;      /* (unused placeholder kept legible)         */
  --surface:#142128;      /* dark card surface                         */
  --surface-2:#182830;    /* dark card hover                           */
  --hair-d:rgba(185,218,225,.13);   /* hairlines on dark               */
  --hair-d-soft:rgba(185,218,225,.07);
  --fg:#E8EEEF;           /* primary text on dark                      */
  --fg-mut:rgba(232,238,239,.52);   /* muted text on dark              */
  --fg-dim:rgba(232,238,239,.34);

  /* ── spec-sheet light ── */
  --paper:#F1EFE8;        /* warm spec-sheet bg                        */
  --paper-2:#F8F6EF;      /* lighter paper                             */
  --white:#FFFFFF;
  --ink:#0E1518;          /* primary text on light                     */
  --muted:#55626A;        /* secondary text on light                   */
  --muted-2:#7E8A8C;
  --hair:#DAD5C7;         /* hairlines on light                        */
  --hair-soft:#E6E2D6;
  --accent-ink:#2D575E;   /* accent as text/links on light (AA)        */

  /* ── type ── */
  --sans:'Archivo','Archivo Fallback',sans-serif;
  --mono:'IBM Plex Mono','SFMono-Regular',ui-monospace,monospace;

  /* ── rhythm ── */
  --mx:88px;              /* page side margin (responsive)             */
  --maxw:1320px;
  --readw:680px;
  --ease:cubic-bezier(.22,.61,.36,1);

  --grain:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 140 140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

html{scroll-behavior:smooth;scroll-padding-top:78px;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);
  background:var(--paper);
  color:var(--ink);
  font-size:17px;line-height:1.66;font-weight:400;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  font-feature-settings:"ss01","cv11";
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
.sec p a:not(.btn):not(.lnk),.sec .lede a:not(.btn):not(.lnk),.lp-hero .lede a:not(.btn):not(.lnk),.cta p a:not(.btn):not(.lnk){text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}
::selection{background:var(--accent);color:var(--instr)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}

h1,h2,h3,h4{font-weight:700;letter-spacing:-.02em;line-height:1.07;color:var(--ink)}
strong{font-weight:600}

/* ── instrument typography primitives ── */
.mono{font-family:var(--mono);font-feature-settings:"zero"}
.eyebrow{
  font-family:var(--mono);font-size:12px;font-weight:500;
  letter-spacing:.22em;text-transform:uppercase;color:var(--accent-ink);
  display:flex;align-items:center;gap:12px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);display:inline-block;flex:none}
.on-dark .eyebrow,.eyebrow--d{color:var(--accent)}
.on-dark .eyebrow::before{background:var(--accent)}

/* ── layout primitives ── */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--mx)}
section{position:relative}
.sec{padding:104px 0}
.sec--tight{padding:72px 0}
.lede{font-size:clamp(17px,1.5vw,20px);line-height:1.62;color:var(--muted);max-width:62ch;font-weight:400}
.on-dark .lede{color:var(--fg-mut)}

.sec-head{max-width:880px;margin-bottom:56px}
.sec-head h2{font-size:clamp(28px,3.7vw,46px);margin:18px 0 16px;letter-spacing:-.028em}
.sec-head .lede{margin-top:6px}

/* hairline rule with instrument ticks + mono caption */
.rule{display:flex;align-items:center;gap:18px;font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted-2)}
.rule::after{content:"";flex:1;height:1px;background:repeating-linear-gradient(90deg,var(--hair) 0 1px,transparent 1px 7px)}
.on-dark .rule{color:var(--fg-dim)}
.on-dark .rule::after{background:repeating-linear-gradient(90deg,var(--hair-d) 0 1px,transparent 1px 7px)}

/* corner-bracket instrument frame */
.frame{position:relative}
.frame::before,.frame::after{content:"";position:absolute;width:14px;height:14px;pointer-events:none}
.frame::before{top:0;left:0;border-top:1px solid var(--accent);border-left:1px solid var(--accent)}
.frame::after{bottom:0;right:0;border-bottom:1px solid var(--accent);border-right:1px solid var(--accent)}

/* graticule + grain backdrops for dark "instrument" sections */
.on-dark{background:var(--instr-2);color:var(--fg)}
.on-dark h1,.on-dark h2,.on-dark h3,.on-dark h4,
.hero h1,.hero h2,.hero h3,
.lp-hero h1,.lp-hero h2,.lp-hero h3,
.cta h1,.cta h2,.cta h3,
.e404 h1{color:var(--fg)}
.graticule{position:absolute;inset:0;pointer-events:none;z-index:0;
  background-image:
    linear-gradient(var(--hair-d-soft) 1px,transparent 1px),
    linear-gradient(90deg,var(--hair-d-soft) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 40%,#000 30%,transparent 100%);
          mask-image:radial-gradient(ellipse 80% 70% at 50% 40%,#000 30%,transparent 100%);
}
.grain{position:absolute;inset:0;pointer-events:none;z-index:0;opacity:.5;mix-blend-mode:overlay;
  background-image:var(--grain);background-size:160px 160px}
.glow{position:absolute;pointer-events:none;z-index:0;border-radius:50%;filter:blur(40px)}

/* ── buttons ── */
.btn{
  --bx:24px;
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:13.5px;font-weight:500;letter-spacing:.02em;
  padding:15px var(--bx);border:1px solid transparent;border-radius:3px;
  cursor:pointer;transition:background .2s var(--ease),border-color .2s,color .2s,transform .2s;
  white-space:nowrap;
}
.btn .ar{transition:transform .25s var(--ease)}
.btn:hover .ar{transform:translateX(4px)}
.btn-primary{background:var(--accent);color:var(--instr);border-color:var(--accent);font-weight:600}
.btn-primary:hover{background:var(--ice);border-color:var(--ice)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--hair)}
.btn-ghost:hover{border-color:var(--ink)}
.on-dark .btn-ghost,.btn-ghost--d{background:transparent;color:var(--fg);border-color:var(--hair-d)}
.on-dark .btn-ghost:hover,.btn-ghost--d:hover{border-color:var(--accent);color:var(--accent)}
.lnk{font-family:var(--mono);font-size:13px;letter-spacing:.02em;color:var(--accent-ink);
  border-bottom:1px solid currentColor;padding-bottom:2px;transition:color .2s,gap .2s;
  display:inline-flex;align-items:center;gap:7px}
.lnk:hover{color:var(--ink)}
.on-dark .lnk{color:var(--accent)}
.on-dark .lnk:hover{color:var(--ice)}

/* ============================================================================
   NAV — instrument fascia bar
   ========================================================================== */
nav#main-nav{
  position:fixed;top:0;left:0;right:0;z-index:300;height:64px;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 var(--mx) 0 calc(var(--mx) - 20px);
  background:rgba(12,19,22,.78);
  -webkit-backdrop-filter:blur(14px) saturate(160%);backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid var(--hair-d);
  transition:height .3s var(--ease),background .3s,border-color .3s;
}
nav#main-nav.scrolled{height:56px;background:rgba(12,19,22,.94)}
.nav-logo{display:flex;align-items:center;gap:15px}
/* logo SVG cropped to glyph (no padding); nav heights compensated to keep prior visual size */
.nav-logo img{height:17.42px;width:auto;display:block;transition:height .3s var(--ease)}
nav#main-nav.scrolled .nav-logo img{height:10.8px}
.nav-tag{font-family:var(--mono);font-size:10px;letter-spacing:.18em;color:var(--accent);
  text-transform:uppercase;padding-left:13px;border-left:1px solid var(--hair-d)}
.nav-links{display:flex;align-items:center;gap:20px;list-style:none}
.nav-links a{font-family:var(--mono);font-size:13px;letter-spacing:.04em;color:var(--fg-mut);
  transition:color .18s;white-space:nowrap}
.nav-links a:hover,.nav-links a[aria-current]{color:var(--fg)}
.nav-links .nav-cta{
  font-family:var(--mono);background:var(--accent);color:var(--instr);
  padding:9px 17px;border-radius:3px;font-weight:600;font-size:12px;letter-spacing:.02em;
  transition:background .2s}
.nav-links .nav-cta:hover{background:var(--ice);color:var(--instr)}
.burger{display:none;background:none;border:0;cursor:pointer;padding:8px;flex-direction:column;gap:5px}
.burger span{display:block;width:22px;height:1.5px;background:var(--fg);transition:transform .3s,opacity .3s}
.burger.open span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* ============================================================================
   HERO — deep instrument panel
   ========================================================================== */
.hero{position:relative;background:var(--instr);color:var(--fg);overflow:hidden;
  padding-top:62px}
.hero-inner{position:relative;z-index:2;max-width:var(--maxw);margin:0 auto;padding:0 var(--mx);
  display:grid;grid-template-columns:1.06fr .94fr;gap:64px;align-items:center;
  min-height:calc(100vh - 62px)}
.hero-l{padding:72px 0 80px}
.hero-meta{display:flex;gap:22px;flex-wrap:wrap;font-family:var(--mono);font-size:11px;
  letter-spacing:.16em;text-transform:uppercase;color:var(--fg-dim);margin-bottom:30px}
.hero-meta span{display:flex;align-items:center;gap:8px}
.hero-meta span::before{content:"";width:6px;height:6px;background:var(--accent);border-radius:50%}
.hero h1{font-size:clamp(34px,5vw,68px);line-height:1.02;letter-spacing:-.035em;font-weight:700;
  margin-bottom:26px}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero h1 .ice{color:var(--ice)}
.hero-sub{font-size:clamp(16px,1.45vw,19px);line-height:1.62;color:var(--fg-mut);
  max-width:50ch;margin-bottom:18px}
.hero-spec{list-style:none;display:flex;flex-wrap:wrap;gap:8px 10px;margin:26px 0 36px}
.hero-spec li{font-family:var(--mono);font-size:12px;letter-spacing:.02em;color:var(--ice);
  border:1px solid rgba(185,218,225,.30);border-radius:3px;padding:7px 12px;transition:border-color .2s,color .2s}
.hero-spec li:hover{border-color:var(--accent);color:var(--accent)}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero-note{font-family:var(--mono);font-size:11.5px;color:var(--fg-dim);margin-top:22px;
  letter-spacing:.04em}

/* hero instrument visual — framed RF bench, scan trace, mono caption */
.hero-r{position:relative;align-self:stretch;display:flex;align-items:center;justify-content:center;
  padding:40px 0}
.hero-vis{position:relative;width:100%;max-width:430px;border:1px solid var(--hair-d);
  background:#0a1013;padding:14px}
.hero-vis::before{content:"";position:absolute;inset:-1px;border:1px solid transparent;
  border-top-color:var(--accent);border-left-color:var(--accent);width:18px;height:18px}
.hero-vis::after{content:"";position:absolute;right:-1px;bottom:-1px;border:1px solid transparent;
  border-bottom-color:var(--accent);border-right-color:var(--accent);width:18px;height:18px}
.hero-vis img{width:100%;filter:contrast(1.04) saturate(.92);position:relative;z-index:1}
.hero-cap{position:absolute;left:14px;bottom:18px;right:14px;z-index:3;display:flex;
  justify-content:space-between;font-family:var(--mono);font-size:10px;letter-spacing:.12em;
  color:var(--ice);text-transform:uppercase;mix-blend-mode:screen}
.hero-trace{position:absolute;left:0;right:0;bottom:0;height:120px;z-index:1;opacity:.5;
  pointer-events:none}

/* ============================================================================
   READOUT STRIP — instrument "trust" figures
   ========================================================================== */
.readout{background:var(--instr);border-top:1px solid var(--hair-d);
  border-bottom:1px solid var(--hair-d);position:relative;z-index:2}
.readout-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.readout-cell{padding:34px var(--mx);border-right:1px solid var(--hair-d);position:relative}
.readout-grid>.readout-cell{padding-left:32px;padding-right:32px}
.readout-grid{padding:0 calc(var(--mx) - 32px)}
.readout-cell:last-child{border-right:0}
.readout-k{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--fg-dim);margin-bottom:10px}
.readout-v{font-size:18px;font-weight:600;color:var(--fg);letter-spacing:-.01em;line-height:1.3}
.readout-v b{color:var(--accent);font-weight:600}

/* ============================================================================
   SERVICES — spec-sheet cards
   ========================================================================== */
.svc-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--hair);
  border:1px solid var(--hair)}
.svc{background:var(--paper-2);padding:42px 40px;position:relative;display:flex;flex-direction:column;
  transition:background .25s}
.svc:hover{background:var(--white)}
.svc--lead{background:var(--instr);color:var(--fg)}
.svc--lead:hover{background:var(--instr-2)}
.svc--lead h3,.svc--lead .svc-no{color:var(--fg)}
.svc-top{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:20px}
.svc-no{font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:var(--muted-2)}
.svc--lead .svc-no{color:var(--accent)}
.svc-badge{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--instr);background:var(--accent);padding:4px 9px;border-radius:2px;font-weight:600}
.svc h3{font-size:22px;letter-spacing:-.02em;margin-bottom:12px}
.svc--lead h3{font-size:25px}
.svc p{font-size:15.5px;line-height:1.62;color:var(--muted);margin-bottom:20px;flex:1}
.svc--lead p{color:var(--fg-mut)}
.svc-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:24px}
.svc-tags span{font-family:var(--mono);font-size:11px;color:var(--muted-2);
  border:1px solid var(--hair);padding:4px 9px;border-radius:2px}
.svc--lead .svc-tags span{color:var(--fg-mut);border-color:var(--hair-d)}
.svc .lnk{margin-top:auto;align-self:flex-start}
.svc--lead .lnk{color:var(--accent)}
/* svc-grid reused on a dark section (insights "Articles") — match .cards on dark */
.on-dark .svc-grid{background:var(--hair-d);border-color:var(--hair-d)}
.on-dark .svc:not(.svc--lead){background:var(--surface)}
.on-dark .svc:not(.svc--lead):hover{background:var(--surface-2)}
.on-dark .svc:not(.svc--lead) h3{color:var(--fg)}
.on-dark .svc:not(.svc--lead) .svc-no{color:var(--fg-mut)}
.on-dark .svc:not(.svc--lead) p{color:var(--fg-mut)}
.on-dark .svc:not(.svc--lead) .svc-tags span{color:var(--fg-mut);border-color:var(--hair-d)}
.on-dark .svc:not(.svc--lead) .lnk{color:var(--accent)}

/* ============================================================================
   FEATURE / CASE — split instrument layout
   ========================================================================== */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split--wide{grid-template-columns:1.15fr .85fr}
.work-head{display:flex;gap:56px;align-items:flex-start;margin-bottom:56px}
.work-head .sec-head{flex:1;max-width:none;margin-bottom:0}
.work-cad{flex:0 0 40%;max-width:440px;margin:-28px 0 0}
@media(max-width:1024px){.work-head{flex-direction:column;gap:32px}.work-cad{flex-basis:auto;max-width:none;margin-top:0}}
.fig{position:relative;border:1px solid var(--hair);background:var(--white);padding:16px}
.on-dark .fig{border-color:var(--hair-d);background:#0a1013}
.fig img{width:100%}
.fig--contain{display:flex;align-items:center;justify-content:center}
.fig--contain img{width:100%;height:auto}
.fig-cap{position:absolute;left:16px;bottom:16px;font-family:var(--mono);font-size:10px;
  letter-spacing:.14em;text-transform:uppercase;color:var(--accent-ink);
  background:rgba(255,255,255,.86);padding:5px 9px}
.on-dark .fig-cap{color:var(--ice);background:rgba(10,16,19,.7)}
.fig-cnr{position:absolute;width:12px;height:12px}
.fig-cnr.tl{top:-1px;left:-1px;border-top:1px solid var(--accent);border-left:1px solid var(--accent)}
.fig-cnr.br{bottom:-1px;right:-1px;border-bottom:1px solid var(--accent);border-right:1px solid var(--accent)}
.fig-note{margin-top:12px;font-family:var(--mono);font-size:12px;letter-spacing:.02em;line-height:1.5;color:var(--muted)}
.fig-note a{color:var(--accent-ink);border-bottom:1px solid currentColor;padding-bottom:1px}
.on-dark .fig-note{color:var(--fg-mut)}
.on-dark .fig-note a{color:var(--ice)}
.case-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--hair);
  border:1px solid var(--hair);margin:28px 0}
.case-stats--2{grid-template-columns:repeat(2,1fr)}
.on-dark .case-stats{background:var(--hair-d);border-color:var(--hair-d)}
.case-stat{background:var(--paper-2);padding:20px}
.on-dark .case-stat{background:var(--surface)}
.case-stat .k{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted-2);margin-bottom:7px}
.on-dark .case-stat .k{color:var(--fg-dim)}
.case-stat .v{font-size:16px;font-weight:600;line-height:1.35}
.todo{font-family:var(--mono);font-size:11px;color:#9a5b62;background:rgba(216,157,166,.14);
  border:1px dashed rgba(216,157,166,.5);padding:2px 7px;border-radius:2px;letter-spacing:.02em}

/* ============================================================================
   PROCESS — numbered instrument steps
   ========================================================================== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--hair)}
.on-dark .steps{border-color:var(--hair-d)}
.step{padding:36px 30px 36px 0;border-right:1px solid var(--hair)}
.on-dark .step{border-color:var(--hair-d)}
.step:last-child{border-right:0;padding-right:0}
.step-no{font-family:var(--mono);font-size:12px;color:var(--accent-ink);letter-spacing:.14em;
  margin-bottom:18px;display:flex;align-items:center;gap:9px}
.on-dark .step-no{color:var(--accent)}
.step-no::before{content:"";width:7px;height:7px;border:1px solid currentColor;border-radius:50%}
.step h3{font-size:19px;margin-bottom:9px;letter-spacing:-.015em}
.step p{font-size:15px;line-height:1.6;color:var(--muted)}
.on-dark .step p{color:var(--fg-mut)}

/* ============================================================================
   SECTORS / FEATURE LIST
   ========================================================================== */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--hair);
  border:1px solid var(--hair)}
.card{background:var(--paper-2);padding:32px 28px;transition:background .25s}
.card:hover{background:var(--white)}
.on-dark .cards{background:var(--hair-d);border-color:var(--hair-d)}
.on-dark .card{background:var(--surface)}
.on-dark .card:hover{background:var(--surface-2)}
.card-ix{font-family:var(--mono);font-size:11px;color:var(--accent-ink);letter-spacing:.16em;
  margin-bottom:16px}
.on-dark .card-ix{color:var(--accent)}
.card h3{font-size:18px;margin-bottom:10px;letter-spacing:-.015em}
.card p{font-size:14.5px;line-height:1.6;color:var(--muted)}
.on-dark .card p{color:var(--fg-mut)}

/* ── plots strip (instrument credibility) ── */
.plots{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.plot{border:1px solid var(--hair-d);background:#0a1013;padding:12px}
.plot img{width:100%;filter:contrast(1.03)}
.plot .c{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--ice);margin-top:10px;display:flex;justify-content:space-between}

/* ── anchor statement (network framing) ── */
.anchor{font-size:clamp(19px,2vw,25px);line-height:1.5;font-weight:500;color:var(--ink);
  letter-spacing:-.012em;max-width:24ch}
.anchor--full{max-width:none}
.on-dark .anchor{color:var(--fg)}
.anchor b{color:var(--accent-ink);font-weight:600}
.on-dark .anchor b{color:var(--accent)}

/* ── escrow / callout ── */
.callout{border:1px solid var(--hair-d);background:linear-gradient(180deg,var(--surface),#0c1518);
  padding:40px;position:relative}
.callout .eyebrow{color:var(--sand)}
.callout .eyebrow::before{background:var(--sand)}
.callout h3{color:var(--fg);font-size:22px;margin:16px 0 12px;letter-spacing:-.02em}
.callout p{color:var(--fg-mut);font-size:16px;line-height:1.62;max-width:60ch}

/* ============================================================================
   FAQ accordion
   ========================================================================== */
.faq{border-top:1px solid var(--hair)}
.on-dark .faq{border-color:var(--hair-d)}
.faq-item{border-bottom:1px solid var(--hair)}
.on-dark .faq-item{border-color:var(--hair-d)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:24px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-family:var(--sans);font-size:18px;font-weight:600;color:var(--ink);letter-spacing:-.015em}
.on-dark .faq-q{color:var(--fg)}
.faq-q .ic{flex:none;width:22px;height:22px;border:1px solid var(--hair);border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:15px;color:var(--muted);
  font-family:var(--mono);transition:transform .3s var(--ease),background .2s,color .2s,border-color .2s}
.on-dark .faq-q .ic{border-color:var(--hair-d);color:var(--fg-mut)}
.faq-q.open .ic{transform:rotate(45deg);background:var(--accent);color:var(--instr);border-color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .45s var(--ease)}
.faq-a-in{padding:0 0 26px;font-size:16px;line-height:1.68;color:var(--muted);max-width:74ch}
.on-dark .faq-a-in{color:var(--fg-mut)}
.faq-a-in p+p{margin-top:12px}

/* ============================================================================
   CONTACT / CTA + progressive-enhanced lead form
   ========================================================================== */
.cta{background:var(--instr);color:var(--fg);position:relative;overflow:hidden}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:72px;
  align-items:start}
.cta h2{font-size:clamp(28px,3.6vw,44px);letter-spacing:-.03em;margin:18px 0 14px}
.cta .lede{color:var(--fg-mut);margin-bottom:30px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.contact-list{list-style:none;display:flex;flex-direction:column;gap:22px;
  border-top:1px solid var(--hair-d);padding-top:28px}
.contact-list .k{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--fg-dim);margin-bottom:6px;display:block}
.contact-list .v{font-size:16px;color:var(--fg-mut);transition:color .2s}
a.v:hover{color:var(--accent)}

.form-card{background:var(--surface);border:1px solid var(--hair-d);padding:34px}
.form-card .frame-h{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent);margin-bottom:6px;display:flex;justify-content:space-between}
.form-card h3{font-size:20px;color:var(--fg);letter-spacing:-.02em;margin-bottom:22px}
.lead-form{display:flex;flex-direction:column;gap:15px}
.fgrid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.ff{position:relative}
.ff input,.ff textarea{width:100%;background:rgba(185,218,225,.04);border:1px solid var(--hair-d);
  border-radius:3px;padding:21px 13px 8px;color:var(--fg);font-family:var(--sans);font-size:15px;
  outline:none;transition:border-color .18s,background .18s;resize:vertical}
.ff textarea{min-height:104px;padding-top:24px;line-height:1.55}
.ff input:hover,.ff textarea:hover{border-color:rgba(185,218,225,.28)}
.ff input:focus,.ff textarea:focus{border-color:var(--accent);background:rgba(185,218,225,.06)}
.ff label{position:absolute;left:13px;top:14px;color:var(--fg-dim);font-size:14px;
  pointer-events:none;transition:.15s var(--ease);font-family:var(--mono);letter-spacing:.02em}
.ff input:focus+label,.ff input:not(:placeholder-shown)+label,
.ff textarea:focus+label,.ff textarea:not(:placeholder-shown)+label{
  top:6px;font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.ff.has-error input,.ff.has-error textarea{border-color:var(--rose)}
.ff-err{display:block;color:var(--rose);font-size:12px;margin-top:5px;font-family:var(--mono)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:12.5px;color:var(--fg-mut);
  line-height:1.5;cursor:pointer;font-family:var(--mono);letter-spacing:.01em}
.consent input{margin-top:2px;accent-color:var(--accent);width:14px;height:14px;flex:none}
.consent a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}
.form-foot{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:6px}
.form-status{font-family:var(--mono);font-size:12px;color:var(--fg-mut)}
.form-status.is-error{color:var(--rose)}
.lead-form.is-hidden{display:none}
.form-ok{display:none;border:1px solid rgba(125,182,194,.34);background:rgba(125,182,194,.07);
  padding:24px;margin-top:4px}
.form-ok.show{display:block}
.form-ok h3{color:var(--accent);font-size:17px;margin-bottom:7px}
.form-ok p{color:var(--fg-mut);font-size:14px}

/* ============================================================================
   PERSISTENT CONSULTATION WIDGET — instrument bezel
   ========================================================================== */
.consult{position:fixed;right:24px;bottom:24px;z-index:280;width:400px;max-width:calc(100vw - 32px);
  background:var(--instr);border:1px solid var(--hair-d);
  box-shadow:0 18px 50px rgba(0,0,0,.5);
  transform:translateY(140%);opacity:0;transition:transform .5s var(--ease),opacity .4s;
  font-family:var(--sans)}
.consult.show{transform:translateY(0);opacity:1}
.consult-bar{display:flex;align-items:center;justify-content:space-between;
  padding:10px 12px 10px 14px;border-bottom:1px solid var(--hair-d)}
.consult-bar .t{font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent);display:flex;align-items:center;gap:8px}
.consult-bar .t::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 0 rgba(125,182,194,.6);animation:blink 2.4s var(--ease) infinite}
@keyframes blink{0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(125,182,194,.5)}
  50%{opacity:.45;box-shadow:0 0 0 5px rgba(125,182,194,0)}}
.consult-x{background:none;border:0;color:var(--fg-dim);cursor:pointer;font-size:18px;
  line-height:1;padding:4px 6px;font-family:var(--mono)}
.consult-x:hover{color:var(--fg)}
.consult-b{padding:18px 16px 20px}
.consult-b p{font-size:13.5px;line-height:1.55;color:var(--fg-mut);margin-bottom:16px}
.consult-b .btn{width:100%;justify-content:center}
.consult-open{position:fixed;right:24px;bottom:24px;z-index:280;display:none;
  font-family:var(--mono);font-size:12px;letter-spacing:.04em;
  background:var(--accent);color:var(--instr);border:0;border-radius:3px;
  padding:12px 18px;cursor:pointer;box-shadow:0 12px 30px rgba(0,0,0,.4);font-weight:600}
.consult-open.show{display:inline-flex;align-items:center;gap:8px}
.consult-open::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--instr)}

/* ============================================================================
   FOOTER
   ========================================================================== */
footer{background:var(--instr);border-top:1px solid var(--hair-d);color:var(--fg-mut)}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px;padding:64px 0 52px}
.foot-brand img{height:36px;margin-bottom:22px}
.foot-brand p{font-size:14px;line-height:1.65;color:var(--fg-mut);max-width:34ch}
.foot-col h4{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--fg-dim);margin-bottom:18px;font-weight:500}
.foot-col ul{list-style:none;display:flex;flex-direction:column;gap:11px}
.foot-col a,.foot-col span{font-size:14px;color:var(--fg-mut);transition:color .18s;cursor:pointer}
.foot-col a:hover{color:var(--accent)}
.foot-bot{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;
  padding:22px 0;border-top:1px solid var(--hair-d);font-family:var(--mono);font-size:11px;
  letter-spacing:.04em;color:var(--fg-dim)}
.foot-bot a{color:var(--fg-dim)}
.foot-bot a:hover{color:var(--fg-mut)}

/* ============================================================================
   LANDING-PAGE (reverse-engineering beachhead)
   ========================================================================== */
.lp-hero{background:var(--instr);color:var(--fg);position:relative;overflow:hidden;
  padding-top:62px}
.lp-hero-in{position:relative;z-index:2;max-width:1080px;margin:0 auto;padding:96px var(--mx) 84px}
.lp-hero h1{font-size:clamp(32px,4.6vw,58px);line-height:1.04;letter-spacing:-.034em;
  max-width:18ch;margin:20px 0 22px}
.lp-hero h1 em{font-style:normal;color:var(--accent)}
.lp-hero .lede{color:var(--fg-mut);max-width:60ch;margin-bottom:32px}
.lp-hero-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.usecase{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--hair);
  border:1px solid var(--hair)}
.uc{background:var(--paper-2);padding:40px 38px}
.uc .tag{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent-ink);margin-bottom:14px}
.uc h3{font-size:21px;letter-spacing:-.02em;margin-bottom:12px}
.uc p{font-size:15.5px;line-height:1.62;color:var(--muted)}
.deliver{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 40px;list-style:none}
.deliver li{display:flex;gap:13px;font-size:16px;line-height:1.5;color:var(--ink);
  padding:14px 0;border-bottom:1px solid var(--hair)}
.deliver li::before{content:"→";color:var(--accent-ink);font-family:var(--mono)}
.on-dark .deliver li{color:var(--fg);border-color:var(--hair-d)}
.on-dark .deliver li::before{color:var(--accent)}

/* ── legal / prose ── */
.prose{max-width:var(--readw);margin:0 auto;padding:120px var(--mx) 96px}
.prose h1{font-size:clamp(30px,4vw,42px);margin:14px 0 28px;letter-spacing:-.025em}
.prose h2{font-size:22px;margin:38px 0 12px;letter-spacing:-.015em}
.prose p,.prose li{font-size:16px;line-height:1.75;color:var(--muted);margin-bottom:14px}
.prose ul{margin:10px 0 16px 20px}
.prose a{color:var(--accent-ink);text-decoration:underline;text-underline-offset:2px}

/* ── 404 ── */
.e404{min-height:80vh;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;background:var(--instr);color:var(--fg);padding:160px var(--mx) 120px}
.e404 .code{font-family:var(--mono);font-size:clamp(64px,12vw,140px);color:var(--accent);
  letter-spacing:.04em;line-height:1}
.e404 p{color:var(--fg-mut);margin:18px 0 34px;font-family:var(--mono);letter-spacing:.06em}

/* ============================================================================
   REVEAL / PAGE-LOAD ORCHESTRATION
   ========================================================================== */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
.hero-l>*{opacity:0;animation:rise .8s var(--ease) forwards}
.hero-l>*:nth-child(1){animation-delay:.05s}
.hero-l>*:nth-child(2){animation-delay:.14s}
.hero-l>*:nth-child(3){animation-delay:.23s}
.hero-l>*:nth-child(4){animation-delay:.32s}
.hero-l>*:nth-child(5){animation-delay:.41s}
.hero-l>*:nth-child(6){animation-delay:.50s}
.hero-r{opacity:0;animation:rise .9s var(--ease) .42s forwards}
@keyframes rise{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}

/* ============================================================================
   RESPONSIVE
   ========================================================================== */
/* decorative logo strapline — only show when the full nav demonstrably fits */
@media(max-width:1299px){.nav-tag{display:none}}
@media(max-width:1200px){:root{--mx:52px}}
@media(max-width:1024px){
  :root{--mx:40px}
  .nav-tag{display:none}
  .nav-logo img{height:14.76px}
  nav#main-nav.scrolled .nav-logo img{height:10.1px}
  .hero-inner{grid-template-columns:1fr;gap:0;min-height:0}
  .hero-r{padding:0 0 64px;justify-content:flex-start}
  .hero-vis{max-width:360px}
  .readout-grid{grid-template-columns:1fr 1fr}
  .readout-cell:nth-child(2){border-right:0}
  .svc-grid,.usecase{grid-template-columns:1fr}
  .split,.cta-grid{grid-template-columns:1fr;gap:44px}
  .steps,.cards,.plots{grid-template-columns:1fr 1fr}
  .step,.steps{border-right:0}
  .deliver{grid-template-columns:1fr}
  .foot-top{grid-template-columns:1fr 1fr;gap:36px}
}
@media(max-width:720px){
  :root{--mx:22px}
  .sec{padding:72px 0}
  nav#main-nav{height:56px}
  .nav-tag{display:none}
  .burger{display:flex}
  .nav-links{position:fixed;inset:56px 0 auto 0;background:var(--instr);
    flex-direction:column;align-items:flex-start;gap:4px;padding:18px var(--mx) 30px;
    border-bottom:1px solid var(--hair-d);display:none;max-height:calc(100vh - 56px);overflow:auto}
  .nav-links.open{display:flex}
  .nav-links a{font-size:15px;padding:11px 0;width:100%}
  .nav-links .nav-cta{margin-top:8px;padding:12px 18px;font-size:13px}
  .hero h1{font-size:clamp(30px,8.5vw,42px)}
  .readout-grid{grid-template-columns:1fr}
  .readout-cell{border-right:0;border-bottom:1px solid var(--hair-d);padding:24px var(--mx)}
  .steps,.cards,.plots{grid-template-columns:1fr}
  .foot-top{grid-template-columns:1fr;gap:30px}
  .consult{right:12px;bottom:12px;width:calc(100vw - 24px)}
  .consult-open{right:12px;bottom:12px}
  .fgrid{grid-template-columns:1fr}
  .case-stats{grid-template-columns:1fr}
}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
  .hero-l>*,.hero-r{opacity:1;animation:none}
}