/* ==========================================================================
   OFFSETEASE — design system
   Built on the wordmark: an oversized ring with a five-point sunburst.
   The mark's ray angles (-150/-105/-60/120/165) drive the site's geometry.
   ========================================================================== */

/* ---------------------------------------------------------------- tokens */
:root{
  /* teal scale, anchored on the brand core #0A3D44 */
  --abyss:#04171A;
  --deep:#062A30;
  --core:#0A3D44;          /* PRIMARY */
  --raised:#0E4E58;
  --mid:#16717F;
  --signal:#5BC9D4;        /* aqua accent */
  --signal-dim:#277782;

  /* neutrals */
  --ink:#0B1315;
  --slate:#5D7074;
  --ash:#B9C2C1;
  --rule:#D9DCD5;
  --bone:#F2F0E9;          /* warm paper */
  --paper:#FBFAF6;
  --white:#FFFFFF;

  /* environmental + signal tones, used sparingly */
  --moss:#7E9C6E;
  --amber:#C08A2E;       /* graphics on DARK grounds only (3.9:1 on core) */
  --amber-ink:#8E6622;   /* amber as TEXT on a light ground */
  --amber-dark:#CE9533;  /* amber as text on a dark ground */
  --ash-strong:#7E8D8C;  /* meaningful borders and axes — 3:1 on paper and bone */

  /* on-dark neutrals */
  --on-dark:#EAF2F2;
  --on-dark-dim:#A8C2C5;
  --on-dark-faint:#8DA4A7;
  --hair-dark:rgba(155,196,200,.22);
  --hair-light:rgba(11,19,21,.13);

  /* type */
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;

  /* fluid scale — 360px → 1440px */
  --s-1:clamp(.75rem,.72rem + .13vw,.8125rem);
  --s0:clamp(.875rem,.85rem + .12vw,.9375rem);
  --s1:clamp(1rem,.96rem + .18vw,1.0625rem);
  --s2:clamp(1.125rem,1.05rem + .33vw,1.3125rem);
  --s3:clamp(1.375rem,1.24rem + .6vw,1.75rem);
  --s4:clamp(1.75rem,1.5rem + 1.1vw,2.5rem);
  --s5:clamp(2.125rem,1.68rem + 1.98vw,3.5rem);
  --s6:clamp(2.5rem,1.75rem + 3.33vw,5rem);
  --s7:clamp(3rem,1.8rem + 5.33vw,7rem);

  /* space */
  --gap:clamp(1rem,.8rem + .9vw,1.5rem);
  --pad-x:clamp(1.25rem,.9rem + 1.8vw,2.5rem);
  --section-y:clamp(4.5rem,3rem + 7vw,9.5rem);
  --maxw:76rem;
  --maxw-wide:88rem;
  --maxw-read:42rem;

  --r:2px;                 /* the system is square; radius is a whisper */
  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
  --dur:.7s;

  --nav-h:72px;
  color-scheme:light;
}
@media (max-width:640px){ :root{ --nav-h:60px; } }

/* ------------------------------------------------------------------ base */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:var(--s1);line-height:1.62;
  font-variation-settings:"opsz" 16;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  font-feature-settings:"kern" 1,"liga" 1,"calt" 1;
  overflow-x:hidden;
}
img,svg,video{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;margin:0;padding:0}
h1,h2,h3,h4{margin:0;font-weight:640;letter-spacing:-.022em;line-height:1.08;
  font-variation-settings:"opsz" 32;text-wrap:balance}
p{margin:0}
::selection{background:var(--signal);color:var(--abyss)}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px;border-radius:var(--r)}
.sr{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;
  clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}
.skip{position:fixed;top:8px;left:8px;z-index:200;padding:.6rem 1rem;background:var(--core);
  color:#fff;transform:translateY(-160%);transition:transform .2s}
.skip:focus{transform:none}

/* --------------------------------------------------------------- layout */
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--pad-x)}
.wrap-wide{max-width:var(--maxw-wide)}
.wrap-read{max-width:var(--maxw-read)}
.section{padding-block:var(--section-y);position:relative}
.section--tight{padding-block:clamp(3rem,2rem + 4vw,5.5rem)}
.grid{display:grid;gap:var(--gap)}
@media (min-width:860px){
  .g-2{grid-template-columns:repeat(2,1fr)}
  .g-3{grid-template-columns:repeat(3,1fr)}
  .g-4{grid-template-columns:repeat(4,1fr)}
  .g-split{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(2rem,5vw,5rem)}
  .g-aside{grid-template-columns:minmax(0,1fr) minmax(0,1.45fr);gap:clamp(2rem,5vw,4.5rem)}
}
@media (min-width:560px) and (max-width:859px){ .g-4{grid-template-columns:repeat(2,1fr)} }

/* surfaces */
.on-dark{background:var(--core);color:var(--on-dark)}
.on-abyss{background:var(--abyss);color:var(--on-dark)}
.on-deep{background:var(--deep);color:var(--on-dark)}
.on-bone{background:var(--bone);color:var(--ink)}
.on-dark h1,.on-dark h2,.on-dark h3,.on-abyss h1,.on-abyss h2,.on-abyss h3,
.on-deep h1,.on-deep h2,.on-deep h3{color:var(--white)}

/* ----------------------------------------------------------- typography */
.kicker{font:500 var(--s-1)/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;
  color:var(--signal-dim);display:flex;align-items:center;gap:.7rem;margin-bottom:1.4rem;
  align-self:start}
.on-dark .kicker,.on-abyss .kicker,.on-deep .kicker{color:var(--signal)}
.kicker::before{content:"";width:9px;height:9px;background:currentColor;flex:none;
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%)}
.kicker__n{opacity:.55}

.display{font-size:var(--s6);letter-spacing:-.035em;line-height:1.02}
.h1{font-size:var(--s5)}
.h2{font-size:var(--s4)}
.h3{font-size:var(--s3);letter-spacing:-.015em}
.h4{font-size:var(--s2);letter-spacing:-.01em;line-height:1.25}
.lede{font-size:var(--s2);line-height:1.5;color:var(--slate);font-weight:380;letter-spacing:-.011em}
.on-dark .lede,.on-abyss .lede,.on-deep .lede{color:var(--on-dark-dim)}
.body{color:var(--slate)}
.on-dark .body,.on-abyss .body,.on-deep .body{color:var(--on-dark-dim)}
.small{font-size:var(--s0)}
.mono{font-family:var(--mono);font-size:var(--s-1);letter-spacing:.06em}
.tnum{font-variant-numeric:tabular-nums}
.stack>*+*{margin-top:1.1rem}
.stack-lg>*+*{margin-top:1.8rem}
.measure{max-width:38ch}
.measure-wide{max-width:56ch}

/* rules */
.rule{height:1px;background:var(--hair-light);border:0;margin:0}
.on-dark .rule,.on-abyss .rule,.on-deep .rule{background:var(--hair-dark)}
.rule-accent{width:64px;height:3px;background:var(--signal);border:0;margin:0}

/* ------------------------------------------------------------- controls */
.btn{display:inline-flex;align-items:center;gap:.65rem;padding:.85rem 1.5rem;
  font-size:var(--s0);font-weight:540;letter-spacing:-.005em;border:1px solid transparent;
  border-radius:var(--r);cursor:pointer;position:relative;overflow:hidden;isolation:isolate;
  transition:color .35s var(--ease),border-color .35s var(--ease),background-color .35s var(--ease)}
.btn::after{content:"";position:absolute;inset:0;z-index:-1;transform:scaleY(0);
  transform-origin:bottom;transition:transform .45s var(--ease-out)}
.btn:hover::after{transform:scaleY(1)}
.btn--primary{background:var(--signal);color:var(--abyss);border-color:var(--signal)}
.btn--primary::after{background:var(--white)}
.btn--solid{background:var(--core);color:var(--white);border-color:var(--core)}
.btn--solid::after{background:var(--abyss)}
.btn--ghost{border-color:var(--hair-light);color:var(--ink)}
.btn--ghost::after{background:var(--ink)}
.btn--ghost:hover{color:var(--paper);border-color:var(--ink)}
.on-dark .btn--ghost,.on-abyss .btn--ghost,.on-deep .btn--ghost{border-color:var(--hair-dark);color:var(--on-dark)}
.on-dark .btn--ghost::after,.on-abyss .btn--ghost::after,.on-deep .btn--ghost::after{background:var(--white)}
.on-dark .btn--ghost:hover,.on-abyss .btn--ghost:hover,.on-deep .btn--ghost:hover{color:var(--core);border-color:var(--white)}
.btn__arrow{transition:transform .4s var(--ease-out)}
.btn:hover .btn__arrow{transform:translateX(4px)}
.btn-row{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center}

/* text link with a ray-angle underline */
.link{display:inline-flex;align-items:center;gap:.5rem;font-weight:520;
  color:var(--core);position:relative;padding-bottom:2px}
.on-dark .link,.on-abyss .link,.on-deep .link{color:var(--signal)}
.link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:currentColor;transform-origin:right;transform:scaleX(0);
  transition:transform .45s var(--ease-out)}
.link:hover::after{transform-origin:left;transform:scaleX(1)}
.link svg{transition:transform .4s var(--ease-out)}
.link:hover svg{transform:translateX(3px)}

/* ------------------------------------------------------------------ logo */
.logo{display:inline-flex;align-items:center;color:currentColor}
.logo svg{height:36px;width:auto;display:block}
@media (max-width:640px){.logo svg{height:30px}}
.foot .logo svg{height:40px}
.logo__ray{transform-origin:0 0;transition:opacity .5s var(--ease)}

/* ------------------------------------------------------------- nav */
.nav{position:fixed;inset:0 0 auto;z-index:100;height:var(--nav-h);
  display:flex;align-items:center;color:var(--on-dark);
  transition:background-color .45s var(--ease),color .45s var(--ease),box-shadow .45s var(--ease)}
.nav::before{content:"";position:absolute;inset:0;z-index:-1;opacity:0;
  background:rgba(251,250,246,.86);backdrop-filter:saturate(1.6) blur(14px);
  -webkit-backdrop-filter:saturate(1.6) blur(14px);transition:opacity .45s var(--ease)}
.nav--solid{color:var(--ink);box-shadow:0 1px 0 var(--hair-light)}
.nav--solid::before{opacity:1}
.nav--hidden{transform:translateY(-100%)}
.nav{transition:transform .5s var(--ease),background-color .45s var(--ease),color .45s var(--ease),box-shadow .45s var(--ease)}
.nav__in{display:flex;align-items:center;gap:1.5rem;width:100%;max-width:var(--maxw-wide);
  margin-inline:auto;padding-inline:var(--pad-x)}
.nav__spacer{flex:1}
.nav__links{display:none;gap:.25rem;align-items:center}
@media (min-width:1080px){.nav__links{display:flex}}
.nav__item{position:relative}
.nav__link{display:inline-flex;align-items:center;gap:.35rem;padding:.55rem .8rem;
  font-size:var(--s0);font-weight:480;letter-spacing:-.005em;opacity:.82;
  transition:opacity .3s var(--ease)}
.nav__link:hover,.nav__item[data-open="true"] .nav__link,.nav__link[aria-current]{opacity:1}
.nav__link[aria-current]::after{content:"";position:absolute;left:.8rem;right:.8rem;bottom:.25rem;
  height:1px;background:var(--signal)}
.nav__caret{width:9px;height:9px;opacity:.6;transition:transform .35s var(--ease)}
.nav__item[data-open="true"] .nav__caret{transform:rotate(180deg)}
.nav__cta{display:none}
@media (min-width:780px){.nav__cta{display:inline-flex}}

/* mega panel */
.mega{position:absolute;top:calc(100% + 10px);left:50%;translate:-50% 0;
  width:min(92vw,var(--mega-w,58rem));background:var(--paper);color:var(--ink);
  border:1px solid var(--hair-light);box-shadow:0 28px 70px -28px rgba(4,23,26,.42);
  padding:1.9rem;opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s}
.nav__item[data-open="true"] .mega{opacity:1;visibility:visible;transform:none}
.mega__grid{display:grid;gap:1.6rem 2.2rem;grid-template-columns:repeat(auto-fit,minmax(13rem,1fr))}
.mega__col-title{font:500 var(--s-1)/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;
  color:var(--signal-dim);margin-bottom:.9rem}
.mega__list{list-style:none;margin:0;padding:0;display:grid;gap:.1rem}
.mega__a{display:block;padding:.42rem .6rem;margin-left:-.6rem;font-size:var(--s0);
  border-radius:var(--r);transition:background-color .25s var(--ease),color .25s var(--ease)}
.mega__a:hover{background:var(--bone);color:var(--core)}
.mega__a span{display:block;font-size:var(--s-1);color:var(--slate);margin-top:.1rem;line-height:1.4}
.mega__feature{background:var(--core);color:var(--on-dark);padding:1.5rem;display:flex;
  flex-direction:column;justify-content:space-between;gap:1.2rem;min-height:12rem}
.mega__feature h4{color:#fff}

/* mobile nav */
.nav__toggle{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;
  margin-right:-10px;background:none;border:0;cursor:pointer}
@media (min-width:1080px){.nav__toggle{display:none}}
.nav__burger{position:relative;width:20px;height:12px}
.nav__burger span{position:absolute;left:0;right:0;height:1.5px;background:currentColor;
  transition:transform .4s var(--ease),opacity .3s}
.nav__burger span:nth-child(1){top:0}
.nav__burger span:nth-child(2){top:5px}
.nav__burger span:nth-child(3){top:10px}
[data-menu="open"] .nav__burger span:nth-child(1){transform:translateY(5px) rotate(45deg)}
[data-menu="open"] .nav__burger span:nth-child(2){opacity:0}
[data-menu="open"] .nav__burger span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.drawer{position:fixed;inset:var(--nav-h) 0 0;z-index:99;background:var(--abyss);color:var(--on-dark);
  overflow-y:auto;overscroll-behavior:contain;padding:1.5rem var(--pad-x) 4rem;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .35s var(--ease),transform .35s var(--ease),visibility .35s}
[data-menu="open"] .drawer{opacity:1;visibility:visible;transform:none}
@media (min-width:1080px){.drawer{display:none}}
.drawer__group{border-bottom:1px solid var(--hair-dark)}
.drawer__head{width:100%;display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding:1.05rem 0;background:none;border:0;cursor:pointer;font-size:var(--s2);font-weight:560;
  letter-spacing:-.015em;text-align:left;color:#fff}
.drawer__head svg{width:12px;flex:none;opacity:.6;transition:transform .35s var(--ease)}
.drawer__group[data-open="true"] .drawer__head svg{transform:rotate(45deg)}
.drawer__body{display:grid;grid-template-rows:0fr;transition:grid-template-rows .4s var(--ease)}
.drawer__group[data-open="true"] .drawer__body{grid-template-rows:1fr}
.drawer__inner{overflow:hidden}
.drawer__list{list-style:none;margin:0;padding:0 0 1.1rem;display:grid;gap:.15rem}
.drawer__list a{display:block;padding:.5rem 0;font-size:var(--s1);color:var(--on-dark-dim)}
.drawer__list a:hover{color:var(--signal)}
.drawer__sub{font:500 var(--s-1)/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;
  color:var(--on-dark-faint);padding:.9rem 0 .35rem}
.drawer__foot{padding-top:1.6rem;display:grid;gap:.6rem}

/* ------------------------------------------------------------------ hero */
.hero{position:relative;min-height:min(100svh,860px);display:flex;align-items:flex-end;
  padding-top:calc(var(--nav-h) + 4rem);padding-bottom:clamp(3rem,6vw,5.5rem);
  background:var(--abyss);color:var(--on-dark);overflow:clip;isolation:isolate}
.hero--short{min-height:min(78svh,680px)}
.hero__canvas{position:absolute;inset:0;z-index:-2;width:100%;height:100%}
.hero__media{position:absolute;inset:0;z-index:-3;overflow:hidden}
.hero__media img{width:100%;height:100%;object-fit:cover;opacity:.5;
  transform:scale(1.08) translateY(var(--py,0px));transition:opacity 1.2s var(--ease)}
.hero__scrim{position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(4,23,26,.62) 0%,rgba(4,23,26,.42) 22%,
    rgba(4,23,26,.4) 46%,rgba(4,23,26,.88) 96%)}
.hero__scrim--side{background:
  linear-gradient(105deg,rgba(4,23,26,.94) 6%,rgba(4,23,26,.6) 46%,rgba(4,23,26,.25) 100%),
  linear-gradient(0deg,rgba(4,23,26,.8) 0%,transparent 46%)}
.hero__in{position:relative;width:100%}
.hero__title{font-size:var(--s7);letter-spacing:-.04em;line-height:.98;color:#fff;max-width:15ch}
.hero__lede{max-width:46ch;margin-top:1.6rem;color:#CBDCDD}
.hero__foot{margin-top:clamp(2rem,4vw,3rem);display:flex;flex-wrap:wrap;gap:1.5rem 2.5rem;
  align-items:flex-end;justify-content:space-between}
.hero__scroll{display:inline-flex;align-items:center;gap:.7rem;font:500 var(--s-1)/1 var(--mono);
  letter-spacing:.14em;text-transform:uppercase;color:var(--on-dark-faint)}
.hero__scrollbar{width:56px;height:1px;background:var(--hair-dark);position:relative;overflow:hidden}
.hero__scrollbar::after{content:"";position:absolute;inset:0;background:var(--signal);
  transform-origin:left;animation:sweep 2.6s var(--ease) infinite}
@keyframes sweep{0%{transform:scaleX(0)}55%{transform:scaleX(1)}100%{transform:scaleX(1);opacity:0}}

/* breadcrumb */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;margin-bottom:1.5rem;
  font:500 var(--s-1)/1.4 var(--mono);letter-spacing:.1em;text-transform:uppercase;
  color:var(--on-dark-faint)}
.crumb a:hover{color:var(--signal)}
.crumb__sep{opacity:.45}

/* -------------------------------------------------------------- eyebrow stat */
.statline{display:flex;flex-wrap:wrap;gap:1.5rem 2.75rem;align-items:baseline}
.stat__n{font-size:var(--s4);font-weight:600;letter-spacing:-.03em;line-height:1;
  font-variant-numeric:tabular-nums;color:#fff;display:block}
.on-bone .stat__n,.on-paper .stat__n{color:var(--core)}
.stat__l{font:500 var(--s-1)/1.4 var(--mono);letter-spacing:.1em;text-transform:uppercase;
  color:var(--on-dark-faint);margin-top:.55rem;display:block;max-width:20ch}
.on-bone .stat__l{color:var(--slate)}

/* ----------------------------------------------------------------- cards */
.card{position:relative;display:flex;flex-direction:column;gap:.85rem;padding:1.7rem 0 0;
  border-top:1px solid var(--hair-light)}
.on-dark .card,.on-abyss .card,.on-deep .card{border-color:var(--hair-dark)}
.card__n{font:500 var(--s-1)/1 var(--mono);letter-spacing:.1em;color:var(--signal-dim)}
.on-dark .card__n,.on-abyss .card__n,.on-deep .card__n{color:var(--signal)}
.card--link{transition:border-color .4s var(--ease)}
.card--link:hover{border-color:var(--signal)}
.card--link .card__title{transition:color .3s var(--ease)}
.card--link:hover .card__title{color:var(--core)}
.on-dark .card--link:hover .card__title{color:var(--signal)}
.card__arrow{margin-top:auto;padding-top:1rem;color:var(--signal-dim);
  transition:transform .45s var(--ease-out)}
.card--link:hover .card__arrow{transform:translateX(5px)}

/* tile: bordered box variant used for service indexes */
.tile{display:flex;flex-direction:column;gap:.6rem;padding:1.5rem;background:var(--paper);
  border:1px solid var(--hair-light);border-radius:var(--r);height:100%;
  transition:border-color .4s var(--ease),transform .5s var(--ease-out),box-shadow .5s var(--ease-out)}
.tile:hover{border-color:var(--signal);transform:translateY(-3px);
  box-shadow:0 18px 40px -24px rgba(10,61,68,.4)}
.on-dark .tile,.on-abyss .tile,.on-deep .tile{background:rgba(255,255,255,.035);border-color:var(--hair-dark)}
.tile__k{font:500 var(--s-1)/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;
  color:var(--signal-dim)}
.on-dark .tile__k,.on-abyss .tile__k,.on-deep .tile__k{color:var(--signal)}

/* numbered list of points */
.points{list-style:none;margin:0;padding:0;display:grid;gap:0}
.points li{display:grid;grid-template-columns:auto 1fr;gap:1rem 1.25rem;
  padding:1.5rem 0;border-top:1px solid var(--hair-light)}
.on-dark .points li,.on-abyss .points li,.on-deep .points li{border-color:var(--hair-dark)}
.points__n{font:500 var(--s-1)/1.6 var(--mono);letter-spacing:.08em;color:var(--signal-dim);
  padding-top:.25rem}
.on-dark .points__n,.on-abyss .points__n,.on-deep .points__n{color:var(--signal)}

/* chips for standards / registries */
.chips{display:flex;flex-wrap:wrap;gap:.5rem}
.chip{display:inline-flex;align-items:center;padding:.4rem .8rem;font:500 var(--s-1)/1.3 var(--mono);
  letter-spacing:.06em;border:1px solid var(--hair-light);border-radius:var(--r);color:var(--slate)}
.on-dark .chip,.on-abyss .chip,.on-deep .chip{border-color:var(--hair-dark);color:var(--on-dark-dim)}
.chip--fill{background:var(--core);border-color:var(--core);color:#fff}
.on-dark .chip--fill,.on-abyss .chip--fill{background:var(--signal);border-color:var(--signal);color:var(--abyss)}

/* pull quote / statement */
.statement{font-size:var(--s4);font-weight:560;letter-spacing:-.028em;line-height:1.16;
  max-width:22ch}
.statement--wide{max-width:30ch}

/* ------------------------------------------------------------------ faq */
.faq{border-top:1px solid var(--hair-light)}
.on-dark .faq,.on-abyss .faq,.on-deep .faq{border-color:var(--hair-dark)}
.faq__item{border-bottom:1px solid var(--hair-light)}
.on-dark .faq__item,.on-abyss .faq__item,.on-deep .faq__item{border-color:var(--hair-dark)}
.faq__q{width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:1.5rem;
  padding:1.35rem 0;background:none;border:0;cursor:pointer;text-align:left;
  font-size:var(--s2);font-weight:520;letter-spacing:-.015em;line-height:1.35;
  transition:color .3s var(--ease)}
.faq__q:hover{color:var(--core)}
.on-dark .faq__q:hover,.on-abyss .faq__q:hover,.on-deep .faq__q:hover{color:var(--signal)}
.faq__sign{position:relative;flex:none;width:14px;height:14px;margin-top:.45rem}
.faq__sign::before,.faq__sign::after{content:"";position:absolute;background:currentColor;
  transition:transform .4s var(--ease)}
.faq__sign::before{top:6.5px;left:0;right:0;height:1.5px}
.faq__sign::after{left:6.5px;top:0;bottom:0;width:1.5px}
.faq__item[data-open="true"] .faq__sign::after{transform:scaleY(0)}
.faq__a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .45s var(--ease)}
.faq__item[data-open="true"] .faq__a{grid-template-rows:1fr}
.faq__a>div{overflow:hidden}
.faq__a p{padding-bottom:1.4rem;max-width:62ch;color:var(--slate)}
.on-dark .faq__a p,.on-abyss .faq__a p,.on-deep .faq__a p{color:var(--on-dark-dim)}

/* ------------------------------------------------------- figures & viz */
.figure{position:relative;width:100%}
.figure-hold{width:100%}
.section .figure svg{max-height:min(72svh,620px)}
.figure svg{width:100%;height:auto;overflow:visible}
.figure__cap{margin-top:1.1rem;font:400 var(--s-1)/1.55 var(--mono);letter-spacing:.03em;
  color:var(--slate);max-width:58ch}
.on-dark .figure__cap,.on-abyss .figure__cap,.on-deep .figure__cap{color:var(--on-dark-faint)}
.viz-label{font-family:var(--mono);font-size:9.5px;letter-spacing:.1em;text-transform:uppercase;
  fill:var(--slate)}
.viz-body{font-family:var(--sans);font-size:12.5px;letter-spacing:-.005em;fill:var(--slate)}
.on-dark .viz-body,.on-abyss .viz-body,.on-deep .viz-body{fill:var(--on-dark-dim)}
.on-dark .viz-label,.on-abyss .viz-label,.on-deep .viz-label{fill:var(--on-dark-faint)}
.viz-value{font-family:var(--mono);font-size:11px;fill:var(--core);font-weight:500}
.on-dark .viz-value,.on-abyss .viz-value,.on-deep .viz-value{fill:var(--signal)}
.viz-title{font-family:var(--sans);font-size:13px;font-weight:560;fill:var(--ink)}
.on-dark .viz-title,.on-abyss .viz-title,.on-deep .viz-title{fill:#fff}
.viz-grid{stroke:var(--hair-light);stroke-width:1}
.on-dark .viz-grid,.on-abyss .viz-grid,.on-deep .viz-grid{stroke:var(--hair-dark)}
.viz-axis{stroke:var(--ash-strong);stroke-width:1}
.on-dark .viz-axis,.on-abyss .viz-axis,.on-deep .viz-axis{stroke:var(--on-dark-faint)}

/* draw-on animation primitives (driven by .is-in / --p) */
.js .draw{stroke-dasharray:var(--len,1000);stroke-dashoffset:var(--len,1000);
  transition:stroke-dashoffset 1.6s var(--ease-out) var(--d,0s)}
.is-in .draw{stroke-dashoffset:0}
.js .grow{transform:scaleY(0);transform-origin:bottom;transition:transform 1.1s var(--ease-out) var(--d,0s)}
.is-in .grow{transform:scaleY(1)}
.js .growx{transform:scaleX(0);transform-origin:left;transition:transform 1.1s var(--ease-out) var(--d,0s)}
.is-in .growx{transform:scaleX(1)}
.js .pop{opacity:0;transform:scale(.6);transform-box:fill-box;transform-origin:center;
  transition:opacity .5s var(--ease) var(--d,0s),transform .7s var(--ease-out) var(--d,0s)}
.is-in .pop{opacity:1;transform:none}
.js .fade{opacity:0;transition:opacity .8s var(--ease) var(--d,0s)}
.is-in .fade{opacity:1}

/* dot matrix (the "one in twenty") */
.matrix{display:grid;grid-template-columns:repeat(10,1fr);gap:clamp(.35rem,.9vw,.6rem);
  max-width:21rem}
.matrix__d{aspect-ratio:1;border-radius:50%;border:1.5px solid var(--ash-strong);opacity:.85}
.on-dark .matrix__d,.on-abyss .matrix__d,.on-deep .matrix__d{border-color:var(--hair-dark)}
.matrix__d--on{opacity:1;background:var(--signal);border-color:var(--signal);
  box-shadow:0 0 0 4px rgba(91,201,212,.18)}
.js .matrix__d{opacity:0;transform:scale(.4);
  transition:opacity .5s var(--ease) var(--d,0s),transform .6s var(--ease-out) var(--d,0s),
             background-color .6s var(--ease) var(--d,0s),border-color .6s var(--ease) var(--d,0s);
  background:transparent;box-shadow:none}
.js .is-in .matrix__d{opacity:.85;transform:none}
.js .is-in .matrix__d--on{opacity:1;background:var(--signal);border-color:var(--signal);
  box-shadow:0 0 0 4px rgba(91,201,212,.18)}

/* ---------------------------------------------------- sticky narrative */
.sticky{position:relative}
.sticky__rail{position:sticky;top:var(--nav-h);height:calc(100svh - var(--nav-h));
  display:flex;align-items:center;overflow:clip}
.sticky__steps{display:grid;gap:0}
.sticky__step{min-height:78svh;display:flex;align-items:center;
  opacity:.26;transition:opacity .5s var(--ease)}
.sticky__step[data-active="true"]{opacity:1}
@media (prefers-reduced-motion:reduce){.sticky__step{opacity:1}}

/* progress ray — the mark's sunburst as a scroll indicator */
.rayprog{position:fixed;right:clamp(1rem,2.5vw,2rem);bottom:clamp(1rem,2.5vw,2rem);
  z-index:90;width:46px;height:46px;pointer-events:none;opacity:0;
  transition:opacity .5s var(--ease)}
.rayprog[data-on="true"]{opacity:1}
@media (max-width:640px){.rayprog{display:none}}
.rayprog circle{fill:none;stroke:var(--hair-dark);stroke-width:1.5}
.rayprog .rayprog__arc{stroke:var(--signal);stroke-linecap:round;
  transform:rotate(-90deg);transform-origin:center}

/* ------------------------------------------------------------- media */
.media{position:relative;overflow:hidden;background:var(--deep)}
.media img{width:100%;height:100%;object-fit:cover}
.media--tall{aspect-ratio:4/5}
.media--wide{aspect-ratio:16/9}
.media--square{aspect-ratio:1}
.media__par{will-change:transform}
.media__tint{position:absolute;inset:0;mix-blend-mode:multiply;
  background:linear-gradient(180deg,rgba(10,61,68,.5),rgba(4,23,26,.75))}
.media__cap{position:absolute;left:0;bottom:0;padding:1rem 1.2rem;color:var(--on-dark);
  font:400 var(--s-1)/1.5 var(--mono);letter-spacing:.05em;
  background:linear-gradient(0deg,rgba(4,23,26,.8),transparent)}
.media--reveal img{clip-path:inset(0 0 100% 0);transition:clip-path 1.2s var(--ease-out)}
.is-in .media--reveal img{clip-path:inset(0 0 0 0)}
.blurup{filter:blur(18px);transform:scale(1.04);transition:filter .7s var(--ease),transform .7s var(--ease)}
.blurup.is-loaded{filter:none;transform:none}

/* full-bleed cinematic band */
.band{position:relative;min-height:min(82svh,760px);display:flex;align-items:center;
  overflow:clip;background:var(--abyss);color:var(--on-dark);isolation:isolate}
.band__bg{position:absolute;inset:-8% 0;z-index:-2}
.band__bg img{width:100%;height:100%;object-fit:cover;opacity:.4}
.band__scrim{position:absolute;inset:0;z-index:-1;
  background:linear-gradient(90deg,rgba(4,23,26,.93) 0%,rgba(4,23,26,.55) 55%,rgba(4,23,26,.3) 100%)}

/* ------------------------------------------------------------- form */
.form{display:grid;gap:1.15rem}
.field{display:grid;gap:.45rem}
.field label{font:500 var(--s-1)/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;
  color:var(--slate)}
.on-dark .field label,.on-abyss .field label,.on-deep .field label{color:var(--on-dark-faint)}
.field input,.field textarea{width:100%;padding:.85rem 1rem;font:inherit;font-size:var(--s1);
  color:inherit;background:transparent;border:1px solid var(--hair-light);border-radius:var(--r);
  transition:border-color .3s var(--ease),background-color .3s var(--ease)}
.on-dark .field input,.on-dark .field textarea,.on-abyss .field input,.on-abyss .field textarea,
.on-deep .field input,.on-deep .field textarea{border-color:var(--hair-dark);background:rgba(255,255,255,.04)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--signal)}
.field textarea{resize:vertical;min-height:6.5rem}
.field__err{font-size:var(--s-1);color:var(--amber-ink);display:none}
.field[data-invalid="true"] input,.field[data-invalid="true"] textarea{border-color:var(--amber-ink)}
.on-dark .field__err,.on-abyss .field__err,.on-deep .field__err{color:var(--amber-dark)}
.field[data-invalid="true"] .field__err{display:block}
.form__note{font-size:var(--s-1);color:var(--slate);max-width:52ch}
.on-dark .form__note,.on-abyss .form__note,.on-deep .form__note{color:var(--on-dark-faint)}
.form__status{font-size:var(--s0);padding:.85rem 1rem;border:1px solid var(--signal);
  border-radius:var(--r);display:none}
.form__status[data-show="true"]{display:block}

/* ------------------------------------------------------------ footer */
.foot{background:var(--abyss);color:var(--on-dark-dim);padding-block:clamp(3.5rem,6vw,5.5rem) 2rem}
.foot__top{display:grid;gap:2.5rem;padding-bottom:3rem}
@media (min-width:760px){.foot__top{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1100px){.foot__top{grid-template-columns:minmax(0,1.25fr) repeat(4,minmax(0,1fr))}}
.foot__cols{display:grid;gap:.55rem}
.foot h5{font:500 var(--s-1)/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;
  color:var(--on-dark-faint);margin:0 0 1.1rem}
.foot a{font-size:var(--s0);color:var(--on-dark-dim);transition:color .25s var(--ease)}
.foot a:hover{color:var(--signal)}
.foot__bar{display:flex;flex-wrap:wrap;gap:1rem 2rem;justify-content:space-between;
  align-items:center;padding-top:2rem;border-top:1px solid var(--hair-dark);
  font-size:var(--s-1);color:var(--on-dark-faint)}

/* ------------------------------------------------------------ motion */
.js [data-reveal]{opacity:0;transform:translateY(18px);
  transition:opacity .85s var(--ease) var(--d,0s),transform .95s var(--ease-out) var(--d,0s)}
[data-reveal].is-in{opacity:1;transform:none}
.js [data-reveal="mask"]{opacity:1;transform:none;clip-path:inset(0 0 102% 0);
  transition:clip-path 1.05s var(--ease-out) var(--d,0s)}
[data-reveal="mask"].is-in{clip-path:inset(0 0 -2% 0)}
.js [data-reveal="scale"]{opacity:0;transform:scale(1.04);
  transition:opacity 1s var(--ease) var(--d,0s),transform 1.3s var(--ease-out) var(--d,0s)}
[data-reveal="scale"].is-in{opacity:1;transform:none}
.lines span{display:block;overflow:hidden}
.js .lines i{display:block;font-style:normal;transform:translateY(102%);
  transition:transform 1.05s var(--ease-out) var(--d,0s)}
.is-in .lines i,.lines.is-in i{transform:none}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;scroll-behavior:auto!important}
  [data-reveal],[data-reveal="mask"],[data-reveal="scale"]{opacity:1!important;transform:none!important;
    clip-path:none!important}
  .lines i{transform:none!important}
  .draw{stroke-dashoffset:0!important}
  .grow,.growx{transform:none!important}
  .pop,.fade,.matrix__d{opacity:1!important;transform:none!important}
  .media--reveal img{clip-path:none!important}
  .hero__scrollbar::after{animation:none;transform:scaleX(1)}
}
@media print{
  .nav,.drawer,.rayprog,.hero__canvas{display:none!important}
  body{background:#fff;color:#000}
  .on-dark,.on-abyss,.on-deep,.hero{background:#fff!important;color:#000!important}
}

/* ------------------------------------------------------- figure: spine */
.spine{list-style:none;margin:0;padding:0;display:grid;gap:0;counter-reset:s;
  grid-template-columns:1fr}
@media (min-width:760px){
  .spine{grid-auto-flow:column;grid-auto-columns:1fr;grid-template-columns:none}
}
.spine__step{position:relative;padding:2.6rem 1.25rem 0 0;
  border-top:1px solid var(--hair-light)}
.on-dark .spine__step,.on-abyss .spine__step,.on-deep .spine__step{border-color:var(--hair-dark)}
.js .spine__step{opacity:0;transform:translateY(14px);
  transition:opacity .7s var(--ease) var(--d,0s),transform .8s var(--ease-out) var(--d,0s)}
.js .is-in .spine__step{opacity:1;transform:none}
.spine__node{position:absolute;top:-11px;left:0;width:22px;height:22px;color:var(--signal);
  background:var(--paper);display:block}
.on-dark .spine__node{background:var(--core)}
.on-abyss .spine__node{background:var(--abyss)}
.on-deep .spine__node{background:var(--deep)}
.on-bone .spine__node{background:var(--bone)}
.spine__n{font:500 var(--s-1)/1 var(--mono);letter-spacing:.1em;color:var(--signal-dim);
  display:block;margin-bottom:.6rem}
.on-dark .spine__n,.on-abyss .spine__n,.on-deep .spine__n{color:var(--signal)}
.spine__t{font-size:var(--s2);margin-bottom:.45rem}
.spine__b{font-size:var(--s0);color:var(--slate);max-width:26ch}
.on-dark .spine__b,.on-abyss .spine__b,.on-deep .spine__b{color:var(--on-dark-dim)}
.spine--dense .spine__step{padding-top:2rem}

/* ------------------------------------------------------ figure: legend */
.legend{list-style:none;margin:1.5rem 0 0;padding:0;display:flex;flex-wrap:wrap;gap:.6rem 1.75rem;
  font-size:var(--s0);color:var(--slate)}
.on-dark .legend,.on-abyss .legend,.on-deep .legend{color:var(--on-dark-dim)}
.legend li{display:flex;align-items:center;gap:.55rem}
.legend__k{width:11px;height:11px;border-radius:50%;border:1.5px solid var(--hair-dark);
  flex:none;opacity:.6}
.legend__k--on{background:var(--signal);border-color:var(--signal);opacity:1}

/* ------------------------------------------------------ figure: ladder */
.ladder{list-style:none;margin:0;padding:0;display:grid;grid-auto-flow:column;
  grid-auto-columns:1fr;gap:clamp(.5rem,1.4vw,1rem);align-items:end}
.ladder__r{display:grid;gap:.5rem;align-content:end;text-align:left}
/* A definite height: a percentage here would resolve against an auto-height
   row and collapse every rung to the same size. */
.ladder__bar{display:block;height:calc(3.25rem + var(--h,.5) * 8.5rem);
  background:var(--ash-strong);border-radius:1px}
/* quieter than the highlighted rung, still 3:1 against every dark ground */
.on-dark .ladder__bar,.on-abyss .ladder__bar,.on-deep .ladder__bar{background:#6B8A90}
.js .ladder__bar{transform:scaleY(0);transform-origin:bottom;
  transition:transform .9s var(--ease-out) var(--d,0s)}
.js .is-in .ladder__bar{transform:scaleY(1)}
.ladder__r--on .ladder__bar{background:var(--signal)}
.ladder__l{font-size:var(--s0);font-weight:540}
.ladder__s{font:400 var(--s-1)/1.4 var(--mono);color:var(--slate)}
.on-dark .ladder__s,.on-abyss .ladder__s,.on-deep .ladder__s{color:var(--on-dark-faint)}

/* ---------------------------------------------------- figure: timeline */
.tl{list-style:none;margin:0;padding:0;display:grid;gap:0}
@media (min-width:820px){.tl{grid-auto-flow:column;grid-auto-columns:1fr}}
.tl__e{position:relative;padding:2.4rem 1.25rem 0 0;border-top:1px solid var(--hair-light)}
.on-dark .tl__e,.on-abyss .tl__e,.on-deep .tl__e{border-color:var(--hair-dark)}
.js .tl__e{opacity:0;transform:translateY(14px);
  transition:opacity .7s var(--ease) var(--d,0s),transform .8s var(--ease-out) var(--d,0s)}
.js .is-in .tl__e{opacity:1;transform:none}
.tl__dot{position:absolute;top:-5px;left:0;width:9px;height:9px;background:var(--signal);
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%)}
.tl__d{font:500 var(--s-1)/1 var(--mono);letter-spacing:.1em;color:var(--signal-dim);
  display:block;margin-bottom:.6rem}
.on-dark .tl__d,.on-abyss .tl__d,.on-deep .tl__d{color:var(--signal)}
.tl__t{font-size:var(--s2);margin-bottom:.4rem}
.tl__b{font-size:var(--s0);color:var(--slate);max-width:30ch}
.on-dark .tl__b,.on-abyss .tl__b,.on-deep .tl__b{color:var(--on-dark-dim)}

/* -------------------------------------------------------- misc blocks */
/* Bleeds to the wrap edges so the fade reads as content flowing off-screen
   rather than as a clipped first word. */
.marquee{overflow:hidden;margin-inline:calc(var(--pad-x) * -1);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 4%,#000 96%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 4%,#000 96%,transparent)}
.marquee__t{padding-inline:var(--pad-x)}
.marquee__t{display:flex;gap:3rem;width:max-content;animation:slide 42s linear infinite}
.marquee__t span{font:500 var(--s-1)/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;
  white-space:nowrap;color:var(--on-dark-faint)}
@keyframes slide{to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.marquee__t{animation:none;flex-wrap:wrap;width:auto}}
.marquee:hover .marquee__t{animation-play-state:paused}

.pill-nav{display:flex;flex-wrap:wrap;gap:.5rem}
.pill{display:inline-flex;padding:.5rem .9rem;font-size:var(--s0);border:1px solid var(--hair-light);
  border-radius:var(--r);transition:border-color .3s var(--ease),background-color .3s var(--ease)}
.pill:hover{border-color:var(--signal);background:var(--bone)}
.on-dark .pill,.on-abyss .pill,.on-deep .pill{border-color:var(--hair-dark)}
.on-dark .pill:hover,.on-abyss .pill:hover,.on-deep .pill:hover{background:rgba(255,255,255,.06);border-color:var(--signal)}

.note{border-left:2px solid var(--signal);padding:.2rem 0 .2rem 1.25rem;color:var(--slate);
  font-size:var(--s0);max-width:58ch}
.on-dark .note,.on-abyss .note,.on-deep .note{color:var(--on-dark-dim)}

.defn{display:grid;gap:.35rem;padding:1.4rem 0;border-top:1px solid var(--hair-light)}
.on-dark .defn,.on-abyss .defn,.on-deep .defn{border-color:var(--hair-dark)}
.defn dt{font-size:var(--s2);font-weight:560;letter-spacing:-.015em}
.defn dd{margin:0;color:var(--slate);max-width:62ch}
.on-dark .defn dd,.on-abyss .defn dd,.on-deep .defn dd{color:var(--on-dark-dim)}

/* QA aid: append ?motion=off to any URL to freeze every entrance animation in
   its finished state. Useful for screenshots, print checks and debugging. */
.motion-off,.motion-off *{scroll-behavior:auto!important}
.motion-off *,.motion-off *::before,.motion-off *::after{
  transition:none!important;animation:none!important}
.motion-off [data-reveal],.motion-off [data-reveal="mask"],.motion-off [data-reveal="scale"]{
  opacity:1!important;transform:none!important;clip-path:none!important}
.motion-off .lines i{transform:none!important}
.motion-off .draw{stroke-dashoffset:0!important}
.motion-off .grow,.motion-off .growx,.motion-off .ladder__bar{transform:none!important}
.motion-off .pop,.motion-off .fade{opacity:1!important;transform:none!important}
.motion-off .matrix__d{opacity:.85!important;transform:none!important}
.motion-off .matrix__d--on{opacity:1!important;background:var(--signal)!important;
  border-color:var(--signal)!important;box-shadow:0 0 0 4px rgba(91,201,212,.18)!important}
.motion-off .spine__step,.motion-off .tl__e{opacity:1!important;transform:none!important}
.motion-off .media--reveal img{clip-path:none!important}

/* ---------------------------------------- figures on narrow screens */
/* A diagram shrunk to phone width turns 12px labels into 5px. Below the
   breakpoint, wide figures scroll inside their own track instead. */
.figure__scroll{width:100%}
@media (max-width:759px){
  .figure__scroll{overflow-x:auto;overscroll-behavior-x:contain;
    -webkit-overflow-scrolling:touch;padding-bottom:.75rem;
    scrollbar-width:thin;scrollbar-color:var(--ash) transparent}
  .figure__scroll>svg{min-width:600px}
  .figure__scroll::-webkit-scrollbar{height:4px}
  .figure__scroll::-webkit-scrollbar-thumb{background:var(--ash);border-radius:2px}
  .on-dark .figure__scroll::-webkit-scrollbar-thumb,
  .on-abyss .figure__scroll::-webkit-scrollbar-thumb,
  .on-deep .figure__scroll::-webkit-scrollbar-thumb{background:var(--on-dark-faint)}
}

/* The signature radial keeps its geometry on desktop and becomes a stacked
   list on a phone, rather than an unreadable thumbnail. */
.radial-list{list-style:none;margin:0;padding:0;display:none;gap:0}
.radial-list li{display:grid;grid-template-columns:auto 1fr;gap:.35rem 1rem;
  padding:1.35rem 0;border-top:1px solid var(--hair-light)}
.on-dark .radial-list li,.on-abyss .radial-list li,.on-deep .radial-list li{border-color:var(--hair-dark)}
.radial-list__n{grid-row:span 2;font:500 var(--s-1)/1.7 var(--mono);letter-spacing:.08em;
  color:var(--signal-dim)}
.on-dark .radial-list__n,.on-abyss .radial-list__n,.on-deep .radial-list__n{color:var(--signal)}
.radial-list__t{font-size:var(--s2);font-weight:560;letter-spacing:-.015em;line-height:1.25}
.radial-list__b{font-size:var(--s0);color:var(--slate)}
.on-dark .radial-list__b,.on-abyss .radial-list__b,.on-deep .radial-list__b{color:var(--on-dark-dim)}
.js .radial-list li{opacity:0;transform:translateY(12px);
  transition:opacity .7s var(--ease) var(--d,0s),transform .8s var(--ease-out) var(--d,0s)}
.js .is-in .radial-list li{opacity:1;transform:none}
.motion-off .radial-list li{opacity:1!important;transform:none!important}
@media (max-width:759px){
  .figure--radial .figure__wide{display:none}
  .radial-list{display:grid}
}

/* stacked spine steps need room so the ring marker never lands on the text above */
@media (max-width:759px){
  .spine__step{padding-bottom:1.5rem}
  .tl__e{padding-bottom:1.25rem}
}