/* site.css — the design system.
 *
 * Rebuilt to the landing-page-design rules. What changed and why:
 *   font      Inter and the Impact class display face are both disallowed.
 *             Manrope throughout, capped at 700; no ultra bold, no italic.
 *   theme     dark, from the approved background set only. Blue and pink stay
 *             as accents so it is still the same brand.
 *   sizes     every one lands on a Tailwind type scale step.
 *   spacing   every value comes from the spacing table.
 *   gradients removed from every background. The single permitted gradient is
 *             on the hero heading text.
 */

:root{
  /* approved dark backgrounds */
  --bg:#000000; --surface:#181818; --surface-2:#1F1F1F; --line:#272727;
  --line-2:#313131;
  --fg:#FFFFFF; --fg-dim:#9B9B9B; --fg-mute:#6E6E6E;
  --blue:#4D17F5; --pink:#FA9DCD;

  /* spacing tokens — nothing between, nothing outside */
  --s-25:2px;  --s-50:4px;  --s-75:8px;   --s-100:12px; --s-200:16px;
  --s-300:24px; --s-400:32px; --s-500:40px; --s-600:48px; --s-700:64px;
  --s-800:80px; --s-900:96px;

  /* motion: mass and spring, never a default curve */
  --ease:cubic-bezier(0.32,0.72,0,1);
  --t-press:200ms; --t-ui:400ms; --t-enter:800ms;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--fg);
  font-family:Manrope,system-ui,sans-serif;font-weight:400;
  font-size:16px;line-height:24px;   /* text-base */
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
  text-wrap:pretty}
h1,h2,h3{font-weight:700;text-wrap:balance;letter-spacing:-0.02em}
a{color:inherit;text-decoration:none}
img,svg{display:block}
::selection{background:var(--blue);color:#fff}

.wrap{max-width:1120px;margin:0 auto;padding-left:var(--s-300);
  padding-right:var(--s-300)}
.measure{max-width:680px}          /* hero heading + subheading cap */

/* skip link — keyboard users need a way past the nav */
.skip{position:absolute;left:var(--s-200);top:-64px;background:var(--blue);
  color:#fff;padding:var(--s-75) var(--s-100);border-radius:8px;z-index:200;
  font-size:14px;line-height:20px;font-weight:600;
  transition:top var(--t-ui) var(--ease)}
.skip:focus{top:var(--s-200)}

/* ---------------- header ----------------
   Full width bar: wordmark hard left, actions hard right. The island pill was
   centred and small, which buried the brand in the middle of nothing. */
header.top{position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  gap:var(--s-300);padding:var(--s-200) var(--s-400);
  background:linear-gradient(to bottom,rgba(0,0,0,.86),rgba(0,0,0,0));
  /* the one background gradient here is a scrim so the bar reads over the
     model; it fades to nothing rather than drawing a box */
  pointer-events:none}
header.top > *{pointer-events:auto}
.brand{display:flex;align-items:center;color:var(--fg);line-height:0}
.brand svg{height:22px;width:auto}
@media(min-width:768px){ .brand svg{height:26px} }
.topnav{display:flex;gap:var(--s-400);align-items:center}
.topnav a{font-size:15px;line-height:20px;font-weight:600;color:var(--fg-dim);
  transition:color var(--t-ui) var(--ease)}
.topnav a:hover,.topnav a[aria-current="page"]{color:var(--fg)}
@media(max-width:860px){ .topnav{display:none} }
/* content pages sit under the bar rather than behind it, so it gets a real
   background instead of the scrim the hero uses */
header.top.solid{background:var(--bg);border-bottom:1px solid var(--line)}
body:has(header.top.solid) main{padding-top:var(--s-900)}

/* ---------------- buttons ---------------- */
.btn{display:inline-flex;align-items:center;justify-content:center;
  gap:var(--s-75);font-family:inherit;font-size:16px;line-height:24px;
  font-weight:600;padding:var(--s-75) var(--s-100);border-radius:9999px;
  border:1px solid transparent;background:var(--surface-2);color:var(--fg);
  cursor:pointer;
  transition:background var(--t-ui) var(--ease),
             transform var(--t-press) var(--ease),
             border-color var(--t-ui) var(--ease)}
.btn.sm{font-size:14px;line-height:20px}
.btn.primary{background:var(--blue);color:#fff}
.btn.ghost{background:transparent;border-color:var(--line-2);color:var(--fg-dim)}
.btn:hover{background:var(--line-2)}
.btn.primary:hover{background:#5B29FF}
.btn.ghost:hover{color:var(--fg);border-color:var(--fg-mute)}
.btn:active{transform:scale(.98)}
.btn:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.btn[disabled],.btn[aria-disabled="true"]{opacity:.45;pointer-events:none}

/* ---------------- sections ---------------- */
main{padding-top:var(--s-900)}
section{padding-top:var(--s-900);padding-bottom:var(--s-900)}
.eyebrow{font-size:14px;line-height:20px;font-weight:600;color:var(--blue);
  margin-bottom:var(--s-100)}
h2{font-size:36px;line-height:40px}                 /* text-4xl */
@media(min-width:768px){ h2{font-size:48px;line-height:1} }  /* text-5xl */
.lede{color:var(--fg-dim);font-size:18px;line-height:28px}   /* text-lg */

.card{background:var(--surface);border:1px solid var(--line);
  border-radius:16px;padding:var(--s-300)}
.card h3{font-size:20px;line-height:28px;margin-bottom:var(--s-75)}
.card p{color:var(--fg-dim);font-size:14px;line-height:20px}
.grid{display:grid;gap:var(--s-200)}
.g3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}

/* ---------------- scroll reveal ----------------
   Heavy fade up with a blur, per the motion rules. Decorative only: the
   element is interactive before it resolves, and if IntersectionObserver is
   missing nothing ever hides. */
.reveal{opacity:0;transform:translateY(64px);filter:blur(12px);
  transition:opacity var(--t-enter) var(--ease),
             transform var(--t-enter) var(--ease),
             filter var(--t-enter) var(--ease)}
.reveal.in{opacity:1;transform:none;filter:none}

/* ---------------- tagline reveal ----------------
   Words activate one at a time in reading order as they cross the trigger. */
.tagline{font-size:36px;line-height:40px;font-weight:700;max-width:680px;
  letter-spacing:-0.02em}
@media(min-width:768px){ .tagline{font-size:60px;line-height:1} }
.tagline w{display:inline-block;color:rgba(255,255,255,.28);
  transition:color 700ms var(--ease)}
.tagline w.lit{color:var(--fg)}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{transform:none;filter:none;transition-duration:300ms}
  .btn:active{transform:none}
  .tagline w{transition-duration:200ms}
}

/* ---------------- additions for the Thenar site ---------------- */

/* Visually hidden but still announced. The comparison table needs a caption
   for screen readers; sighted users already have the section heading. */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

footer{border-top:1px solid var(--line);padding:var(--s-500) 0;
  color:var(--fg-mute);font-size:14px;line-height:20px}
footer a{color:var(--fg-dim);transition:color var(--t-ui) var(--ease)}
footer a:hover{color:var(--fg)}

/* ================= Fauna-derived layout scale =================
   Structure copied from faunarobotics.com, palette deliberately not.
   Measured off their live DOM: headings 64px / 1.03 / -2px at weight 500,
   statement headings 99px / 0.93 / -1px, container 1233px, bento grid two
   columns at a 16px gap, feature row three columns at 78px. The single
   biggest difference from a default template is WEIGHT 500, not 700, which
   is what stops big type reading as shouting. */
.fwrap{max-width:1233px;margin:0 auto;padding-left:var(--s-300);
  padding-right:var(--s-300)}
.ctr{text-align:center}
.fh1,.fh2{font-weight:500;letter-spacing:-2px;text-align:center;
  font-size:40px;line-height:1.03;text-wrap:balance}
@media(min-width:768px){ .fh1,.fh2{font-size:64px} }
.fbig{font-weight:500;letter-spacing:-1px;text-align:center;
  font-size:52px;line-height:.95;text-wrap:balance}
@media(min-width:768px){ .fbig{font-size:99px;line-height:.93} }
.flede{color:var(--fg-dim);font-size:18px;line-height:28px;max-width:620px;
  margin-left:auto;margin-right:auto;text-align:center}
.feyebrow{text-align:center;font-size:13px;line-height:20px;font-weight:600;
  letter-spacing:.08em;text-transform:uppercase;color:var(--blue);
  margin-bottom:var(--s-200)}

.bento{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:900px){ .bento{grid-template-columns:1fr 1fr} }
.tri{display:grid;grid-template-columns:1fr;gap:var(--s-500)}
@media(min-width:900px){ .tri{grid-template-columns:repeat(3,1fr);gap:78px} }
.quad{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(min-width:900px){ .quad{grid-template-columns:repeat(4,1fr)} }

/* the hero media block: full container width, heavy radius, our surface */
.stage3d{position:relative;border-radius:24px;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);
  aspect-ratio:16/9;margin-top:var(--s-600)}
.stage3d canvas{width:100%;height:100%;display:block;cursor:grab;
  opacity:0;transition:opacity 900ms var(--ease)}
.stage3d.ready canvas{opacity:1}
.stage3d canvas:active{cursor:grabbing}
.stage3d .hint3d{position:absolute;left:var(--s-300);bottom:var(--s-300);
  font-size:11px;font-weight:600;letter-spacing:.08em;color:var(--fg-mute);
  pointer-events:none}
.stage3d .state{position:absolute;right:var(--s-300);bottom:var(--s-300);
  font-size:11px;font-weight:700;letter-spacing:.08em;color:var(--blue);
  pointer-events:none}

/* credential strip, Fauna's "trusted by" slot */
.creds{display:flex;flex-wrap:wrap;gap:var(--s-300) var(--s-600);
  justify-content:center;align-items:center;margin-top:var(--s-600);
  padding-top:var(--s-500);border-top:1px solid var(--line)}
.creds span{font-size:13px;font-weight:600;letter-spacing:.06em;
  text-transform:uppercase;color:var(--fg-mute)}

/* bento tiles, hoverable and linked to the 3D */
.tile{background:var(--surface);border:1px solid var(--line);
  border-radius:20px;padding:var(--s-400);cursor:default;
  transition:border-color var(--t-ui) var(--ease),
             background var(--t-ui) var(--ease)}
.tile:hover{border-color:var(--blue);background:var(--surface-2)}
.tile h3{font-size:24px;line-height:30px;font-weight:500;letter-spacing:-.5px}
.tile p{color:var(--fg-dim);font-size:15px;line-height:24px;
  margin-top:var(--s-100)}
.tile .spec{display:flex;gap:var(--s-300);flex-wrap:wrap;margin-top:var(--s-300);
  padding-top:var(--s-200);border-top:1px solid var(--line)}
.tile .spec div{font-size:12px;line-height:18px;color:var(--fg-mute)}
.tile .spec b{display:block;color:var(--fg);font-size:15px;font-weight:600}
.tile .dot{width:9px;height:9px;border-radius:9999px;display:inline-block;
  margin-right:8px;vertical-align:1px}

/* band section: the model pins while the parts list scrolls past it */
.bandgrid{display:grid;grid-template-columns:1fr;gap:16px;
  margin-top:var(--s-600)}
@media(min-width:960px){ .bandgrid{grid-template-columns:1.05fr 1fr;gap:24px} }
.bandstick{position:relative}
@media(min-width:960px){
  .bandstick{position:sticky;top:96px;height:min(74vh,620px)}
  .stage3d.tall{aspect-ratio:auto;height:100%;margin-top:0}
}
.stage3d.tall{margin-top:0}
.bandlist{display:grid;gap:16px}
.tile.on{border-color:var(--blue);background:var(--surface-2)}

.clockbox{display:grid;grid-template-columns:1fr;gap:var(--s-400);
  align-items:center;margin-top:var(--s-700);padding:var(--s-400);
  border:1px solid var(--line);border-radius:20px;background:var(--surface)}
@media(min-width:900px){ .clockbox{grid-template-columns:1fr 1.15fr} }
.clockbox h3{font-size:28px;line-height:34px;font-weight:500;letter-spacing:-.5px}
.clockbox p{color:var(--fg-dim);margin-top:var(--s-200);font-size:15px;
  line-height:24px}
.clockbox .viz{aspect-ratio:16/9}