/* ==========================================================================
   Thalamic — shared stylesheet
   Ported from the Claude Design project (3d46b62b). Every colour, size and
   clamp below comes from the design source; see FIGURES note in README.
   ========================================================================== */

/* ---------------------------------------------------------------- tokens */
:root{
  --paper:#F7F7F4;
  --panel:#FFFFFF;
  --ink:#1C1C18;
  --body:#4C4B45;
  --muted:#6E6D66;
  --faint:#9A988F;
  --rule:#E4E3DC;
  --rule-soft:#EFEEE8;
  --rule-inline:#C9C8C0;
  --accent:oklch(0.45 0.16 266);
  --accent-lift:oklch(0.68 0.14 266);
  --accent-wash:oklch(0.9 0.05 266);
  --dark-text:#F7F7F4;
  --dark-muted:#8B8A82;
  --dark-rule:#33322E;
  --dark-line:#4C4B45;
  --serif:'Instrument Serif',Georgia,serif;
  --sans:'Instrument Sans',system-ui,-apple-system,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,monospace;

  /* Display tuning travels with the face — a 92px serif at 400/-0.01em is
     right, the same size in Inter needs weight and much tighter tracking. */
  --dw:400;        /* display + title weight  */
  --dt:-0.01em;    /* display tracking        */
  --dl:1.02;       /* display line-height     */
  --tt:0;          /* title tracking          */
}

/* ---------------------------------------------------------- type settings */
/* The brand lockup sets "thalamic." in Inter Medium and is delivered, not
   editable — so where the page and the logo disagree, the page moves. Chosen
   with ?type=; see README.

   unified   (default) Inter throughout, matching the wordmark exactly.
   editorial Inter for everything except the display face, which stays
             Instrument Serif — two voices instead of three.
   original  the design project as delivered: Instrument Serif + Instrument Sans. */
html[data-type="unified"]{
  --serif:'Inter',system-ui,-apple-system,sans-serif;
  --sans:'Inter',system-ui,-apple-system,sans-serif;
  --dw:500;
  --dt:-0.035em;
  --dl:1.06;
  --tt:-0.022em;
}
html[data-type="editorial"]{
  --sans:'Inter',system-ui,-apple-system,sans-serif;
}
/* Instrument Serif is a display serif with a small x-height; Inter Medium at
   the same nominal size reads ~20% larger and sets ~20% wider, which pushed the
   headline into the signal field. Step the display sizes down to match the
   serif's optical size and measure. */
html[data-type="unified"] .display{font-size:clamp(46px,6.2vw,78px)}
html[data-type="unified"] .display--sub{font-size:clamp(42px,5.4vw,70px)}
html[data-type="unified"] .contact__display{font-size:clamp(38px,5.2vw,64px)}

/* ----------------------------------------------------------------- base */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  -webkit-font-smoothing:antialiased;
}
a{color:var(--ink);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--accent)}
::selection{background:var(--accent-wash)}
h1,h2,h3,p{margin:0}

.shell{max-width:1120px;margin:0 auto;padding:96px 32px}
.shell--masthead{padding:18px 32px}
.shell--hero{padding:120px 32px 72px}
.shell--subhero{padding:110px 32px 80px}
.shell--pipeline{padding:0 32px 96px}
.shell--contact{padding:110px 32px 48px}

.rule-top{border-top:1px solid var(--rule)}

/* utility type */
.eyebrow{
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted);
}
.eyebrow--accent{color:var(--accent)}
.display{
  font-family:var(--serif);font-weight:var(--dw);
  font-size:clamp(52px,7.2vw,92px);line-height:var(--dl);letter-spacing:var(--dt);
}
.display--sub{font-size:clamp(48px,6.4vw,84px);line-height:1.03}
.section-title{
  font-family:var(--serif);font-weight:var(--dw);
  font-size:clamp(30px,3.4vw,44px);line-height:1.15;letter-spacing:var(--tt);
}
.stop{color:var(--accent)}
.fig-caption{
  font-family:var(--mono);font-size:10px;letter-spacing:.1em;color:var(--faint);
}
.link-rule{
  display:inline-block;font-size:14px;font-weight:500;
  border-bottom:1px solid var(--ink);padding-bottom:3px;
}
.link-soft{
  display:inline-block;font-size:14px;font-weight:500;color:var(--muted);
  border-bottom:1px solid transparent;padding-bottom:3px;
}
.link-inline{border-bottom:1px solid var(--rule-inline)}

/* ------------------------------------------------------------- masthead */
.masthead{
  position:sticky;top:0;z-index:50;
  background:rgba(247,247,244,.88);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--rule);
}
/* centred, not baseline: the wordmark is now an image and has no text baseline
   to hang the nav from */
.masthead__inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;flex-wrap:wrap;
}
/* The lockup is loaded from logo/ rather than inlined, so the brand SVG stays
   the one source of truth: replace the file, every page follows. -web is the
   outlined, ink-trimmed build — see logo/make-outlined-lockup.py. */
.wordmark{display:flex;align-items:center;transition:opacity .2s ease}
.wordmark:hover{opacity:.7}
.wordmark__lockup{display:block;height:42px;width:auto}
.nav{display:flex;gap:22px;flex-wrap:wrap;font-size:13px;letter-spacing:.02em}
.nav__contact{color:var(--accent)}
.nav__current{border-bottom:1px solid var(--ink);padding-bottom:2px}

/* ------------------------------------------------------------- menu */
/* Eight destinations set on one line need ~780px next to the lockup, so below
   that the masthead would run to two rows — and since it is sticky, those two
   rows would cost vertical space on every screen of every page, not just the
   hero. Under 900px the nav becomes a panel behind a burger instead and the
   bar stays one line throughout. The same <nav> is reused in both layouts, so
   there is only ever one copy of the links per page. */
.burger{
  display:none;
  width:40px;height:40px;margin-right:-9px;padding:0;
  background:none;border:0;cursor:pointer;color:var(--ink);
  position:relative;
}
.burger__bar{
  position:absolute;left:9px;width:22px;height:1px;background:currentColor;
  transition:transform .28s cubic-bezier(.2,.65,.25,1),opacity .18s ease;
}
.burger__bar:nth-child(1){top:17px}
.burger__bar:nth-child(2){top:23px}
/* the two bars fold into the close cross rather than being swapped for one */
html[data-menu="open"] .burger__bar:nth-child(1){transform:translateY(3px) rotate(45deg)}
html[data-menu="open"] .burger__bar:nth-child(2){transform:translateY(-3px) rotate(-45deg)}

/* Everything below is gated on [data-menu], which site.js sets on load: with
   scripting off nothing can open the panel, so the nav must stay as it is —
   two wrapped rows — rather than becoming unreachable behind a dead button. */
@media (max-width:900px){
  html[data-menu] .burger{display:block;flex:none}
  html[data-menu="open"]{overflow:hidden}
  html[data-menu] .nav{
    /* Anchored to the masthead, not the viewport: .masthead carries a
       backdrop-filter, which makes it the containing block for fixed children
       too — so `fixed` would resolve against the 79px bar and collapse. Hanging
       it off the bar's bottom edge is the same result, honestly stated. */
    position:absolute;left:0;right:0;
    /* Both from the same measured bar, so they can't disagree: `top:100%` and a
       vh-derived height resolve against different boxes (padding vs border) and
       leave a seam. --panel is the exact viewport remainder under the bar,
       which also absorbs the mobile browser chrome that dvh only approximates. */
    top:var(--bar,79px);
    height:var(--panel,calc(100dvh - 79px));
    flex-direction:column;flex-wrap:nowrap;gap:0;
    background:var(--paper);
    padding:8px 20px calc(24px + env(safe-area-inset-bottom));
    overflow-y:auto;
    font-size:19px;letter-spacing:-.01em;
    /* closed state: still in the tree for the toggle to animate, but taken out
       of the tab order and off the a11y tree by visibility */
    visibility:hidden;opacity:0;transform:translateY(-6px);
    transition:opacity .22s ease,transform .28s cubic-bezier(.2,.65,.25,1),visibility 0s .28s;
  }
  html[data-menu] .nav a{padding:15px 0;border-bottom:1px solid var(--rule-soft)}
  html[data-menu] .nav a:last-child{border-bottom:0}
  html[data-menu] .nav__current{border-bottom:1px solid var(--rule-soft);color:var(--muted)}
  html[data-menu="open"] .nav{
    visibility:visible;opacity:1;transform:none;
    transition:opacity .22s ease,transform .28s cubic-bezier(.2,.65,.25,1);
  }
}
@media (max-width:900px) and (prefers-reduced-motion:reduce){
  html[data-menu] .nav,.burger__bar{transition:none}
}

/* ----------------------------------------------------------------- hero */
/* The signal field is full-bleed behind the hero band, but masked so it only
   emerges to the right of the type — the text always sits on clean paper. */
.hero-band{position:relative;overflow:hidden}
.hero-band > .shell{position:relative;z-index:1}
.hero-signal{
  position:absolute;inset:0;width:100%;height:100%;
  z-index:0;pointer-events:none;
  opacity:0;transition:opacity 1.4s ease .2s;
  -webkit-mask-image:linear-gradient(90deg,transparent 50%,#000 68%,#000 93%,transparent 100%);
          mask-image:linear-gradient(90deg,transparent 50%,#000 68%,#000 93%,transparent 100%);
}
.hero-signal[data-ready]{opacity:1}
/* raster needs room on both sides of its gate — continuous stretch before it,
   event ticks after — so it starts a little further left than the others */
html[data-hero="raster"] .hero-signal{
  -webkit-mask-image:linear-gradient(90deg,transparent 46%,#000 62%,#000 93%,transparent 100%);
          mask-image:linear-gradient(90deg,transparent 46%,#000 62%,#000 93%,transparent 100%);
}
/* Inter still sets a longer line than the serif even after the size step-down,
   so the field starts further right when the page is set in it */
html[data-type="unified"][data-hero="raster"] .hero-signal{
  -webkit-mask-image:linear-gradient(90deg,transparent 52%,#000 68%,#000 93%,transparent 100%);
          mask-image:linear-gradient(90deg,transparent 52%,#000 68%,#000 93%,transparent 100%);
}
/* the routing plate reads as structure, so it can sit a little wider */
html[data-hero="lattice"] .hero-signal{
  -webkit-mask-image:linear-gradient(90deg,transparent 46%,#000 64%,#000 94%,transparent 100%);
          mask-image:linear-gradient(90deg,transparent 46%,#000 64%,#000 94%,transparent 100%);
}
/* Narrow screens have no space beside the type, so there is nothing for a
   sideways mask to reveal into — the field runs full-bleed behind the hero
   instead and is dropped back far enough that the type still reads as sitting
   on clean paper. The mask turns vertical: it only softens the two edges, so
   the field doesn't butt into the header rule above or the spec cards below.
   The raster's own geometry adapts to match (see hero-signal.js → narrow). */
@media (max-width:900px){
  html[data-type][data-hero] .hero-signal{
    -webkit-mask-image:linear-gradient(180deg,transparent 0,#000 13%,#000 87%,transparent 100%);
            mask-image:linear-gradient(180deg,transparent 0,#000 13%,#000 87%,transparent 100%);
  }
  html[data-type][data-hero] .hero-signal[data-ready]{opacity:.36}
}

.tone{display:none}
html[data-tone="quiet"] .tone--quiet,
html[data-tone="visionary"] .tone--visionary,
html[data-tone="human"] .tone--human{display:block}

.hero__headline{margin:0;max-width:15ch}
.tone--human .hero__headline{max-width:16ch}
.lede{font-size:19px;line-height:1.6;color:var(--body);max-width:52ch;margin:32px 0 0}
.lede--sub{font-size:18px;line-height:1.65;max-width:56ch}
.hero__actions{display:flex;gap:28px;margin-top:40px;flex-wrap:wrap}

/* ------------------------------------------------- fig. 01 — data path */
html[data-pipeline="off"] .pipeline-block{display:none}
.pipeline{
  display:flex;align-items:stretch;flex-wrap:wrap;
  border:1px solid var(--rule);
  font-family:var(--mono);font-size:12px;line-height:1.7;
}
.pipeline__cell{flex:1;min-width:220px;padding:24px 28px;border-left:1px solid var(--rule)}
.pipeline__cell:first-child{border-left:0}
.pipeline__cell--npu{background:var(--panel)}
.pipeline__label{
  font-size:10px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--muted);margin-bottom:10px;
}
.pipeline__cell--npu .pipeline__label{color:var(--accent)}
.pipeline-block .fig-caption{margin-top:10px}

/* -------------------------------------------------------- section grid */
.section__grid{
  display:grid;grid-template-columns:minmax(140px,1fr) minmax(0,3fr);gap:40px;
}
.section__grid > *{min-width:0}
.section__index{
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--accent);
}
.prose{font-size:16px;line-height:1.7;color:var(--body);max-width:60ch;margin:28px 0 0}
.prose + .prose{margin-top:16px}
.title--tight{max-width:24ch}
.title--tighter{max-width:22ch}
.title--gap{margin-bottom:12px}

/* ------------------------------------------------------- pillar blocks */
.pillars{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:36px;margin-top:40px;
}
.pillar__num{font-family:var(--mono);font-size:11px;color:var(--faint);margin-bottom:12px}
.pillar__name{font-weight:600;font-size:15px;margin-bottom:8px}
.pillar p{font-size:14px;line-height:1.65;color:var(--body)}

/* minmax(0,1fr) + aspect-ratio:auto keep <image-slot> (whose :host defaults to
   width:100%/aspect-ratio:3/2) from forcing the column wider than the viewport. */
.figure{margin-top:44px;display:grid;grid-template-columns:minmax(0,1fr);gap:12px}
.figure image-slot{width:100%;height:380px;aspect-ratio:auto}
.figure--portrait image-slot{height:260px}
.section__cta{margin-top:36px}

/* ------------------------------------------------------------ stat grid */
/* 1px gaps over a --rule background draw the hairlines between cells.
   Column counts are explicit rather than auto-fit: these grids hold a fixed
   number of cells, and auto-fit strands the last one in a half-empty row. */
.stats{
  display:grid;grid-template-columns:minmax(0,1fr);
  gap:1px;background:var(--rule);border:1px solid var(--rule);
  margin-top:40px;font-family:var(--mono);
}
.stat{background:var(--paper);padding:24px 26px}
.stat__value{font-size:22px;letter-spacing:-.01em}
.stat__label{
  font-size:10px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--muted);margin-top:10px;line-height:1.5;
}

/* ---------------------------------------------------------- signal chain */
.chain{
  display:grid;grid-template-columns:minmax(0,1fr);
  gap:1px;background:var(--rule);border:1px solid var(--rule);
  margin-top:40px;font-family:var(--mono);
}
.chain__stage{background:var(--paper);padding:22px 20px}
.chain__stage--onchip{background:var(--panel)}
.chain__step{font-size:10px;letter-spacing:.12em;color:var(--faint)}
.chain__name{font-size:13px;margin:10px 0 8px}
.chain__note{font-size:11px;line-height:1.6;color:var(--muted)}
.chain__stage--onchip .chain__step{color:var(--accent)}

/* ------------------------------------------------------- spec / product */
.spec{margin-top:36px;border:1px solid var(--rule);background:var(--panel)}
.spec__head{
  padding:28px 32px;border-bottom:1px solid var(--rule);
  display:flex;justify-content:space-between;align-items:baseline;
  gap:16px;flex-wrap:wrap;
}
.spec__name{font-family:var(--serif);font-weight:var(--dw);font-size:26px;letter-spacing:var(--tt)}
.spec__status{
  font-family:var(--mono);font-size:11px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--accent);
}
.spec__rows{font-family:var(--mono);font-size:12.5px;line-height:1.6}
.spec__row{
  display:flex;justify-content:space-between;gap:24px;
  padding:14px 32px;border-bottom:1px solid var(--rule-soft);
}
.spec__row:last-child{border-bottom:0}
.spec__key{color:var(--muted)}
.spec__note{font-size:14px;line-height:1.65;color:var(--muted);margin:20px 0 0;max-width:56ch}

/* --------------------------------------------------------- listing rows */
.rows{display:flex;flex-direction:column}
.row{
  display:grid;grid-template-columns:minmax(200px,1fr) minmax(0,2fr);
  gap:24px;padding:28px 0;border-bottom:1px solid var(--rule);
}
.row:last-child{border-bottom:0}
.row__name{font-weight:600;font-size:16px}
.row p{font-size:14px;line-height:1.65;color:var(--body)}
.row__meta{
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--muted);margin-top:8px;
}

/* ---------------------------------------------------------------- tags */
.tags{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px;font-family:var(--mono);font-size:12px}
.tag{border:1px solid var(--rule);padding:10px 18px}

/* ------------------------------------------------------- founder cards */
/* auto-fill rather than auto-fit: cards keep the same size whether there are
   two founders or five, and a part-filled last row simply ends early. */
.founders{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));
  gap:34px 24px;margin-top:40px;
}
.founder{min-width:0}
/* height:auto is load-bearing — the img's height="640" attribute is a
   presentational hint that otherwise wins over aspect-ratio and stretches the
   card to 640px tall. */
.founder__photo{
  display:block;width:100%;height:auto;aspect-ratio:1/1;object-fit:cover;
  background:var(--rule-soft);
}
.founder__role{
  font-family:var(--mono);font-size:10px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--accent);margin-top:16px;
}
.founder__name{
  font-family:var(--serif);font-weight:var(--dw);font-size:19px;
  letter-spacing:var(--tt);line-height:1.25;margin-top:8px;
}
.founder__affil{font-size:12.5px;line-height:1.5;color:var(--muted);margin-top:6px}
.founder__bio{font-size:13px;line-height:1.6;color:var(--body);margin-top:10px}
.founder__link{
  display:inline-block;margin-top:10px;
  font-family:var(--mono);font-size:10px;letter-spacing:.06em;color:var(--muted);
  border-bottom:1px solid var(--rule-inline);padding-bottom:2px;
}
.founder__link:hover{color:var(--accent)}

/* Unfilled seats. Same box as a real card so the row keeps its rhythm, but
   held back to the muted end of the palette so they read as pending rather
   than as people. height:auto overrides <image-slot>'s own :host sizing. */
.founder__slot{display:block;width:100%;height:auto;aspect-ratio:1/1;opacity:.55}
.founder--slot .founder__role{color:var(--faint)}
.founder--slot .founder__name,
.founder--slot .founder__affil,
.founder--slot .founder__bio{color:var(--faint)}

/* -------------------------------------------------------- 06 — contact */
.contact{border-top:1px solid var(--ink);background:var(--ink);color:var(--dark-text)}
.contact .eyebrow{color:var(--dark-muted);margin-bottom:24px}
.contact__display{font-family:var(--serif);font-weight:var(--dw);font-size:clamp(44px,6vw,76px);line-height:1.05;letter-spacing:var(--dt)}
.contact__display .stop{color:var(--accent-lift)}
.contact__mail{
  display:inline-block;margin-top:28px;font-family:var(--mono);font-size:16px;
  color:var(--dark-text);border-bottom:1px solid var(--dark-line);padding-bottom:4px;
}
.contact__mail:hover{color:var(--accent-lift)}
.colophon{
  display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;
  margin-top:96px;padding-top:24px;border-top:1px solid var(--dark-rule);
  font-size:12px;color:var(--dark-muted);
}
/* 30px is the floor for the mark on-page: the frame ticks are 1.6-unit strokes
   on a 64 viewBox, so below ~28px they collapse into a speck. Small uses go
   through logo/favicon.svg, which carries heavier strokes for that reason. */
.colophon__brand{display:flex;align-items:center;gap:10px}
.colophon__mark{width:30px;height:30px;flex:none}
.colophon a{color:var(--dark-muted)}
.colophon a:hover{color:var(--dark-text)}
.colophon__links{display:flex;gap:20px;flex-wrap:wrap}

/* ------------------------------------------------------------- narrow */
@media (max-width:760px){
  .shell{padding-left:20px;padding-right:20px}
  .shell--hero{padding-top:88px}
  .shell--subhero{padding-top:80px}
  .section__grid{grid-template-columns:1fr;gap:20px}
  .row{grid-template-columns:1fr;gap:8px}
  .spec__row{padding-left:20px;padding-right:20px}
  .spec__head{padding-left:20px;padding-right:20px}
  .figure image-slot{height:260px}
}

/* Fixed-count grids step up in factors of their item count (4 stats, 6 chain
   stages) so no row is ever left part-empty. */
@media (max-width:560px){
  .founders{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:560px){
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .chain{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:900px){
  .stats{grid-template-columns:repeat(4,minmax(0,1fr))}
  .chain{grid-template-columns:repeat(3,minmax(0,1fr))}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .hero-signal{transition:none}
}