/* ==========================================================================
   Sivi Quant Labs, design system
   White background, near-black text. Hierarchy from size, weight and space
   only. One typeface. No brand color, no gradients, no shadows.
   Spacing scale, base 8: 8 / 16 / 24 / 48 / 96.
   ========================================================================== */

:root{
  --bg:#FFFFFF;
  --ink:#111111;
  --mid:#666666;
  --line:#E5E5E5;

  --s1:8px; --s2:16px; --s3:24px; --s4:48px; --s5:96px;

  --sans:'Inter','Inter var',-apple-system,BlinkMacSystemFont,'Helvetica Neue',Helvetica,Arial,sans-serif;

  --wrap:1120px;   /* outer container */
  --read:720px;    /* measure for running text */
  --gutter:32px;
}

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

html{scroll-behavior:smooth;scroll-padding-top:88px;-webkit-text-size-adjust:100%}

body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.65;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

::selection{background:var(--ink);color:#fff}

img,canvas,svg{max-width:100%;display:block}

a{color:inherit;text-decoration:none}

/* Visible, monochrome focus ring for keyboard users */
:focus-visible{outline:2px solid var(--ink);outline-offset:3px}

.skip{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--ink);color:#fff;padding:var(--s2) var(--s3);font-size:14px;
}
.skip:focus{left:0}

/* ---------- layout ------------------------------------------------------ */

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.read{max-width:var(--read)}

.section{padding:var(--s5) 0;border-top:1px solid var(--line)}
.section--flush{border-top:none}

/* ---------- type -------------------------------------------------------- */

h1,h2,h3,h4{font-weight:600;letter-spacing:-0.02em;line-height:1.12}

h1{
  font-size:clamp(38px,5.6vw,64px);
  letter-spacing:-0.035em;
  line-height:1.04;
  max-width:15ch;
}

h2{font-size:clamp(27px,3.4vw,40px);letter-spacing:-0.03em;max-width:20ch}

h3{font-size:20px;letter-spacing:-0.015em;line-height:1.3}

h4{font-size:16px;letter-spacing:-0.01em}

p{max-width:var(--read)}

.lead{font-size:clamp(17px,2vw,20px);line-height:1.55;color:var(--ink);max-width:640px}

.body{color:var(--mid);font-size:17px;line-height:1.65}

.caption{font-size:13.5px;line-height:1.55;color:var(--mid)}

strong,b{font-weight:600;color:var(--ink)}

/* Inline link inside running text */
.link{
  color:var(--ink);
  border-bottom:1px solid var(--line);
  transition:border-color .15s ease;
}
.link:hover{border-bottom-color:var(--ink)}

code{
  font-family:ui-monospace,SFMono-Regular,'SF Mono',Menlo,Consolas,monospace;
  font-size:0.88em;
  background:#F6F6F6;
  padding:2px 5px;
  color:var(--ink);
}

/* ---------- section label (tiny cube glyph + uppercase caption) --------- */

.label{
  display:flex;align-items:center;gap:10px;
  font-size:12px;font-weight:500;
  letter-spacing:0.14em;text-transform:uppercase;
  color:var(--mid);
  margin-bottom:var(--s3);
}
.label .cube{width:14px;height:14px;flex:none;opacity:.75}

/* ---------- buttons ----------------------------------------------------- */

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-family:inherit;font-size:15px;font-weight:500;letter-spacing:-0.005em;
  line-height:1;
  padding:15px 24px;
  border:1px solid var(--ink);
  border-radius:2px;
  cursor:pointer;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease;
  white-space:nowrap;
}
.btn-solid{background:var(--ink);color:#fff}
.btn-solid:hover{background:#000;border-color:#000}

.btn-ghost{background:transparent;color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}

.btn-row{display:flex;flex-wrap:wrap;gap:var(--s2);margin-top:var(--s4)}

/* Text link that behaves like a CTA */
.arrow-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:500;
  border-bottom:1px solid var(--ink);
  padding-bottom:2px;
}
.arrow-link span{transition:transform .18s ease}
.arrow-link:hover span{transform:translateX(4px)}

/* ---------- header ------------------------------------------------------ */

header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,0.88);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:var(--s3)}
.brand{display:flex;align-items:center;gap:12px;flex:none}
/* The deck's mark has thinner strokes than the old trace, so it carries a
   little more height to sit level with the wordmark. */
.brand .mark{height:30px;width:auto}
.brand .word{height:11px;width:auto}

.navlinks{display:flex;align-items:center;gap:var(--s3)}
/* :not(.btn) matters, a bare `.navlinks a` rule outranks `.btn-solid` on
   specificity and would repaint the CTA's white label grey on black. */
.navlinks a:not(.btn){
  font-size:14.5px;color:var(--mid);
  transition:color .15s ease;
}
.navlinks a:not(.btn):hover{color:var(--ink)}
.navlinks .btn{padding:10px 16px;font-size:13.5px}

/* ---------- hero -------------------------------------------------------- */

.hero{
  /* padding-block only, .hero shares an element with .wrap, and the shorthand
     would wipe out .wrap's horizontal gutter. */
  padding-top:var(--s5);
  padding-bottom:var(--s5);
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,460px);
  gap:var(--s4);
  align-items:center;
}
.hero-copy{max-width:640px}
.hero .lead{margin-top:var(--s3)}

.stage-wrap{width:100%}
.stage{
  position:relative;
  aspect-ratio:1/1;
  width:100%;
  touch-action:pan-y;
}
.stage canvas{width:100%;height:100%;display:block;cursor:grab}
.stage canvas:active{cursor:grabbing}
.stage-cap{
  margin-top:var(--s2);
  font-size:13.5px;line-height:1.5;color:var(--mid);
  max-width:34ch;
}

/* ---------- client strip ------------------------------------------------ */

/* Logos render as flat #111 silhouettes so four clashing brand palettes
   (teal, black, rust, blue/orange) don't break the monochrome rule. Each one
   gets its own height because stacked lockups and wordmarks need different
   sizing to read at the same optical weight. */
.clients{padding:var(--s4) 0;border-top:1px solid var(--line)}
.clients .label{margin-bottom:var(--s3)}
.client-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  align-items:center;
  justify-items:start;
  gap:var(--s3);
  margin:var(--s3) 0;
}
.client-row img{
  width:auto;
  opacity:.62;
  transition:opacity .18s ease;
}
.client-row img:hover{opacity:1}
.client-row img[data-c="technumen"]{height:50px}
.client-row img[data-c="styliamo"]{height:27px}
.client-row img[data-c="redcoral"]{height:40px}
.client-row img[data-c="bytexl"]{height:26px}

@media (max-width:720px){
  .client-row{grid-template-columns:repeat(2,1fr);gap:var(--s3) var(--s2);justify-items:center}
  .client-row img[data-c="technumen"]{height:40px}
  .client-row img[data-c="styliamo"]{height:23px}
  .client-row img[data-c="redcoral"]{height:34px}
  .client-row img[data-c="bytexl"]{height:22px}
}

/* ---------- offerings --------------------------------------------------- */

.offer-intro{margin-top:var(--s2);max-width:var(--read)}

.offers{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0 var(--s5);
  margin-top:var(--s4);
}
.offer{
  padding:var(--s3) 0;
  border-top:1px solid var(--line);
}
.offer h3{font-size:18px;margin-bottom:10px}
.offer p{font-size:16px;color:var(--mid);max-width:46ch}
.offer .deliver{
  margin-top:12px;font-size:14.5px;color:var(--mid);
}
.offer .deliver b{
  display:block;font-size:11.5px;font-weight:500;letter-spacing:0.12em;
  text-transform:uppercase;color:var(--ink);margin-bottom:4px;
}

/* Area heading sits above its own grid of offerings */
.area{padding:var(--s5) 0;border-top:1px solid var(--line)}
.area-lead{margin-top:var(--s2)}

@media (max-width:860px){
  .offers{grid-template-columns:1fr;gap:0}
}

/* ---------- contact / apply dialog -------------------------------------- */

dialog.modal{
  /* margin:auto is what centers a native dialog, and the global `*{margin:0}`
     reset above wipes it out. Put it back explicitly. */
  margin:auto;
  padding:0;border:1px solid var(--ink);border-radius:2px;
  background:var(--bg);color:var(--ink);
  width:min(560px,calc(100vw - 32px));
  max-height:calc(100vh - 48px);
  overflow:auto;
}
dialog.modal::backdrop{background:rgba(17,17,17,0.42)}
.modal-inner{padding:var(--s3) var(--s4) var(--s3)}

.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--s3)}
.modal-head h2{font-size:22px;max-width:none;letter-spacing:-0.025em}
.modal-sub{color:var(--mid);font-size:14.5px;margin-top:8px;max-width:44ch}

.modal-close{
  flex:none;width:32px;height:32px;line-height:1;
  border:1px solid var(--line);border-radius:2px;background:transparent;
  color:var(--ink);font-size:18px;cursor:pointer;
  transition:border-color .15s ease;
}
.modal-close:hover{border-color:var(--ink)}

.field{margin-top:var(--s2)}
.field label{
  display:block;font-size:11.5px;font-weight:500;letter-spacing:0.1em;
  text-transform:uppercase;color:var(--mid);margin-bottom:6px;
}
.field label .opt{text-transform:none;letter-spacing:0;font-size:12.5px}
.field input,.field textarea,.field select{
  width:100%;font-family:inherit;font-size:16px;color:var(--ink);
  background:var(--bg);
  border:1px solid var(--line);border-radius:2px;
  padding:10px 13px;
  transition:border-color .15s ease;
}
.field textarea{resize:vertical;min-height:84px;line-height:1.5}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--ink);
}
.field input:user-invalid,.field textarea:user-invalid{border-color:var(--ink)}
.field .err{display:none;margin-top:6px;font-size:13px;color:var(--ink)}
.field.invalid .err{display:block}
.field.invalid input,.field.invalid textarea{border-color:var(--ink)}

/* honeypot: never shown to a person, catches naive bots */
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* The apply form is taller than a short laptop viewport, so the dialog
   scrolls internally and the actions stay pinned; Send is never out of reach. */
.modal-actions{
  display:flex;gap:var(--s2);align-items:center;flex-wrap:wrap;
  position:sticky;bottom:0;
  margin-top:var(--s3);
  padding:var(--s2) 0 var(--s1);
  background:var(--bg);
  border-top:1px solid var(--line);
}
.modal-note{font-size:12.5px;color:var(--mid);margin-top:var(--s2);line-height:1.45}

@media (max-width:560px){
  .modal-inner{padding:var(--s3) var(--s3) var(--s3)}
  .modal-head h2{font-size:21px}
  .modal-actions .btn{width:100%}
}

/* ---------- generic grids ---------------------------------------------- */

.grid-3{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:0;
  margin-top:var(--s4);
}
.grid-3 > *{
  padding:0 var(--s3) 0 0;
  border-right:1px solid var(--line);
}
.grid-3 > *:last-child{border-right:none;padding-right:0}
.grid-3 > * + *{padding-left:var(--s3)}

.grid-2{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:var(--s4) var(--s5);
  margin-top:var(--s4);
}

.stack > * + *{margin-top:var(--s2)}

/* Service / principle entry */
.entry h3{margin-bottom:var(--s2)}
.entry p{color:var(--mid);max-width:42ch}
.entry .num{
  display:block;font-size:12px;font-weight:500;letter-spacing:0.12em;
  color:var(--mid);margin-bottom:var(--s2);
}

/* ---------- numbered steps --------------------------------------------- */

.steps{margin-top:var(--s4);counter-reset:step}
.step{
  display:grid;grid-template-columns:56px 1fr;gap:var(--s3);
  padding:var(--s3) 0;
  border-top:1px solid var(--line);
}
.step:last-child{border-bottom:1px solid var(--line)}
.step .n{
  font-size:13px;font-weight:500;color:var(--mid);
  letter-spacing:0.06em;padding-top:3px;
}
.step h3{margin-bottom:6px;font-size:18px}
.step p{color:var(--mid);font-size:16px}

/* ---------- definition table (role spec) -------------------------------- */

.spec{margin-top:var(--s4);border-top:1px solid var(--line)}
.spec > div{
  display:grid;grid-template-columns:200px 1fr;gap:var(--s3);
  padding:var(--s2) 0;
  border-bottom:1px solid var(--line);
}
.spec dt{
  font-size:12px;font-weight:500;letter-spacing:0.12em;text-transform:uppercase;
  color:var(--mid);padding-top:4px;
}
.spec dd{font-size:16px}
.spec dd small{display:block;color:var(--mid);font-size:14px;margin-top:3px}

/* ---------- bullet list ------------------------------------------------- */

.list{margin-top:var(--s3);list-style:none;max-width:var(--read)}
.list li{
  position:relative;padding-left:22px;color:var(--mid);
  font-size:16.5px;line-height:1.6;
}
.list li + li{margin-top:12px}
.list li::before{
  content:'';position:absolute;left:0;top:11px;
  width:6px;height:6px;border:1px solid var(--ink);
}

/* ---------- role cards (careers index) ---------------------------------- */

.roles{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--s2);margin-top:var(--s4);
}
.role-card{
  display:flex;flex-direction:column;gap:var(--s1);
  padding:var(--s3);
  border:1px solid var(--line);
  border-radius:2px;
  transition:border-color .16s ease;
}
.role-card:hover{border-color:var(--ink)}
.role-card .r-kind{font-size:12px;letter-spacing:0.12em;text-transform:uppercase;color:var(--mid)}
.role-card h2{font-size:19px;letter-spacing:-0.015em;line-height:1.3;max-width:none}
.role-card p{font-size:15px;color:var(--mid);line-height:1.55;flex:1}
.role-card .go{font-size:14px;font-weight:500;display:inline-flex;gap:8px;align-items:center;margin-top:var(--s1)}

/* ---------- role section ------------------------------------------------ */

.role{padding:var(--s5) 0;border-top:1px solid var(--line)}
.role-head{display:flex;align-items:baseline;gap:var(--s2);flex-wrap:wrap;margin-bottom:var(--s2)}
.role-head .r-index{font-size:13px;color:var(--mid);letter-spacing:0.1em}

.subhead{margin-top:var(--s5);margin-bottom:var(--s2);font-size:16px;font-weight:600}
.subhead:first-of-type{margin-top:var(--s4)}

/* ---------- callout ----------------------------------------------------- */

.callout{
  margin-top:var(--s4);
  padding:var(--s3);
  border:1px solid var(--ink);
  border-radius:2px;
  display:grid;grid-template-columns:auto 1fr;gap:var(--s3);align-items:start;
}
.callout .cube{width:22px;height:22px;flex:none;margin-top:2px}
.callout .t{font-size:12px;font-weight:600;letter-spacing:0.12em;text-transform:uppercase;margin-bottom:6px}
.callout p{font-size:16px;color:var(--mid)}

/* ---------- FAQ --------------------------------------------------------- */

.faq{border-top:1px solid var(--line);max-width:var(--read)}
.faq + .subhead{margin-top:var(--s4)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;
  padding:var(--s3) 40px var(--s3) 0;
  position:relative;
}
/* The question is a real heading for outline and SEO purposes, but it should
   read as plain summary text. */
.faq summary .q{
  display:inline;font-size:17px;font-weight:500;
  letter-spacing:-0.01em;line-height:1.45;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:'';position:absolute;right:8px;top:50%;
  width:10px;height:10px;margin-top:-6px;
  border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);
  transform:rotate(45deg);transition:transform .2s ease;
}
.faq details[open] summary::after{transform:rotate(-135deg);margin-top:-2px}
.faq .a{padding:0 0 var(--s3);color:var(--mid);font-size:16px}

/* ---------- closing band ------------------------------------------------ */

.band{padding:var(--s5) 0;border-top:1px solid var(--line)}
.band h2{margin-bottom:var(--s3)}

/* ---------- footer ------------------------------------------------------ */

footer{border-top:1px solid var(--line);padding:var(--s4) 0}
.foot{display:flex;align-items:center;justify-content:space-between;gap:var(--s3);flex-wrap:wrap}
.foot-links{display:flex;gap:var(--s3);flex-wrap:wrap}
.foot-links a,.foot .caption{font-size:13.5px;color:var(--mid)}
.foot-links a{transition:color .15s ease}
.foot-links a:hover{color:var(--ink)}

/* ---------- toast (email copied) ---------------------------------------- */

#toast{
  position:fixed;left:50%;bottom:24px;transform:translate(-50%,16px);
  background:var(--ink);color:#fff;
  padding:12px 18px;border-radius:2px;
  font-size:14px;
  opacity:0;pointer-events:none;transition:opacity .22s ease,transform .22s ease;
  z-index:150;max-width:calc(100vw - 32px);
}
#toast.on{opacity:1;transform:translate(-50%,0)}

/* ---------- scroll reveal ----------------------------------------------- */

/* Hidden only once JS has confirmed it can reveal them again, without the
   `js` class (no JavaScript) every .reveal stays visible. */
html.js .reveal{opacity:0;transform:translateY(12px)}
html.js .reveal.in{opacity:1;transform:none;transition:opacity .5s ease,transform .5s ease}

/* ---------- responsive -------------------------------------------------- */

@media (max-width:980px){
  .hero{grid-template-columns:1fr;gap:var(--s4)}
  .stage-wrap{max-width:400px;margin:0 auto}
  .roles{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .grid-3 > *{
    border-right:none;border-top:1px solid var(--line);
    padding:var(--s3) 0 0 0 !important;
  }
  .grid-3 > *:first-child{border-top:none;padding-top:0 !important}
  .grid-2{grid-template-columns:1fr;gap:var(--s3)}
}

@media (max-width:720px){
  :root{--gutter:20px;--s5:64px}
  .navlinks .desktop-only{display:none}
  .spec > div{grid-template-columns:1fr;gap:4px}
  .spec dt{padding-top:0}
  .step{grid-template-columns:36px 1fr;gap:var(--s2)}
  .btn-row .btn{width:100%}
  .foot{flex-direction:column;align-items:flex-start;gap:var(--s2)}
}

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

@media print{
  header,#toast,.stage{display:none}
  body{font-size:12pt}
  .section,.role{border-top:1px solid #ccc;padding:16pt 0}
}