/* Top Rank Insight — the design view. Round 5 (29 Sep 2026): Archivo, restrained sizes, flat and simple.
   Ethan: "the font is too much like an e-commerce brand or a beauty business" · "more simple, in terms of looks" ·
   "don't make it too big … the majority of everything is bold". So: one family (Archivo) with mono labels, bold only on
   real headings, flat grounds (no gradients, no dotted grid, no cursor glow), plain panels, one accent.
   Earlier: Prototype A v3 "The System" (the design site).
   v1 "Lens" and v2 "Operating layer" are kept beside this folder for comparison.
   Brief (Ethan, 24 Sep, round 3): cinematic and interactive like v1, informative and straight to the point,
   a living 3D system behind the page (hub, agents, growth), GSAP + three.js. Palette SWAPPED with site B:
   cream by default; html[data-theme] picks one of five (round 6).
   Variable names are semantic roles so every page works in both palettes:
   --deep page · --abyss deeper surface · --panel/--panel-2 cards · --cream INK · --navy text ON the accent ·
   --gold ACCENT (text-safe) · --btn-* primary button · --hl-* highlighter · --viz-* chart pair · --p-* particles */

:root{
  --f-display:'Archivo','Helvetica Neue',Arial,sans-serif;
  --f-body:'Archivo','Segoe UI',Arial,sans-serif;
  --f-mono:'IBM Plex Mono',Consolas,monospace;
  --ease:cubic-bezier(.22,1,.36,1);
  --gutter:clamp(18px,4vw,56px);
  --max:1180px; --r:10px;
}
/* colour themes (round 7, 29 Sep 2026): six, same roles in each; the list lives in shared/themes.js */
:root,html[data-theme="cream"]{
  --deep:#F7F4EC; --abyss:#EFE6D3; --panel:#FBF8F1; --panel-2:#FFFFFF;
  --cream:#14284F; --navy:#F7F4EC; --gold:#8A6A20; --gold-hi:#6E5418; --accent2:#1D3E8F;
  --mute:color-mix(in srgb,#3A424B 92%,transparent); --faint:color-mix(in srgb,#3A424B 66%,transparent);
  --rule:color-mix(in srgb,#14284F 12%,transparent); --rule-2:color-mix(in srgb,#14284F 22%,transparent);
  --btn-bg:#14284F; --btn-fg:#F7F4EC; --hl-bg:#14284F; --hl-fg:#F0E7D6; --band:#14284F;
  --glow:color-mix(in srgb,#C6A052 24%,transparent); --shadow:rgba(20,30,45,.22);
  --bg-a:color-mix(in srgb,#C6A052 22%,transparent); --bg-b:color-mix(in srgb,#1D3E8F 10%,transparent);
  --viz-hi:#14284F; --viz-lo:#7D8699; --p-ink:#14284F; --p-accent:#B8903F; --p-bg:#F7F4EC;
  color-scheme:light;
}
html[data-theme="stone"]{
  --deep:#E6E3DD; --abyss:#DCD8D0; --panel:#EFEDE8; --panel-2:#F5F3EF;
  --cream:#23282D; --navy:#E6E3DD; --gold:#735618; --gold-hi:#5C4513; --accent2:#1D3E8F;
  --mute:color-mix(in srgb,#3A424B 92%,transparent); --faint:color-mix(in srgb,#3A424B 66%,transparent);
  --rule:color-mix(in srgb,#23282D 12%,transparent); --rule-2:color-mix(in srgb,#23282D 22%,transparent);
  --btn-bg:#23282D; --btn-fg:#E6E3DD; --hl-bg:#23282D; --hl-fg:#F0E7D6; --band:#23282D;
  --glow:color-mix(in srgb,#C6A052 24%,transparent); --shadow:rgba(20,30,45,.24);
  --bg-a:color-mix(in srgb,#C6A052 22%,transparent); --bg-b:color-mix(in srgb,#1D3E8F 10%,transparent);
  --viz-hi:#23282D; --viz-lo:#858780; --p-ink:#23282D; --p-accent:#A8843A; --p-bg:#E6E3DD;
  color-scheme:light;
}
html[data-theme="navy"]{
  --deep:#0B1733; --abyss:#08112A; --panel:#0F1F40; --panel-2:#132650;
  --cream:#F0E7D6; --navy:#14284F; --gold:#C6A052; --gold-hi:color-mix(in srgb,#C6A052 72%,#fff); --accent2:#9DB2E8;
  --mute:color-mix(in srgb,#F0E7D6 70%,transparent); --faint:color-mix(in srgb,#F0E7D6 46%,transparent);
  --rule:color-mix(in srgb,#F0E7D6 11%,transparent); --rule-2:color-mix(in srgb,#F0E7D6 18%,transparent);
  --btn-bg:#C6A052; --btn-fg:#14284F; --hl-bg:#C6A052; --hl-fg:#14284F;
  --glow:color-mix(in srgb,#C6A052 12%,transparent); --shadow:rgba(0,0,0,.6);
  --bg-a:color-mix(in srgb,#1D3E8F 40%,transparent); --bg-b:color-mix(in srgb,#C6A052 8%,transparent);
  --viz-hi:#C6A052; --viz-lo:#6B7388; --p-ink:#F0E7D6; --p-accent:#C6A052; --p-bg:#0B1733;
  color-scheme:dark;
}
html[data-theme="graphite"]{
  --deep:#1E2328; --abyss:#181C20; --panel:#252B31; --panel-2:#2A3037;
  --cream:#EEE9DF; --navy:#1E2328; --gold:#D1B067; --gold-hi:color-mix(in srgb,#D1B067 72%,#fff); --accent2:#AFC0D6;
  --mute:color-mix(in srgb,#EEE9DF 70%,transparent); --faint:color-mix(in srgb,#EEE9DF 46%,transparent);
  --rule:color-mix(in srgb,#EEE9DF 11%,transparent); --rule-2:color-mix(in srgb,#EEE9DF 18%,transparent);
  --btn-bg:#D1B067; --btn-fg:#1E2328; --hl-bg:#D1B067; --hl-fg:#1E2328;
  --glow:color-mix(in srgb,#D1B067 12%,transparent); --shadow:rgba(0,0,0,.6);
  --bg-a:color-mix(in srgb,#3A424B 40%,transparent); --bg-b:color-mix(in srgb,#D1B067 8%,transparent);
  --viz-hi:#D1B067; --viz-lo:#6E747C; --p-ink:#EEE9DF; --p-accent:#D1B067; --p-bg:#1E2328;
  color-scheme:dark;
}
/* round 16 (30 Sep 2026): paper, graphite's daylight twin. Ethan: keep the grey as the dark look, add a light one.
   White ground, graphite ink, a deeper gold for text (#8A6A20 on white 5.0:1), graphite buttons, a graphite founder band. */
html[data-theme="paper"]{
  --deep:#FFFFFF; --abyss:#F3F4F6; --panel:#F7F8F9; --panel-2:#F6F7F8;
  --cream:#1E2328; --navy:#FFFFFF; --gold:#8A6A20; --gold-hi:#6E5418; --accent2:#46566A;
  --mute:color-mix(in srgb,#1E2328 74%,transparent); --faint:color-mix(in srgb,#1E2328 64%,transparent);
  --rule:color-mix(in srgb,#1E2328 11%,transparent); --rule-2:color-mix(in srgb,#1E2328 20%,transparent);
  --btn-bg:#1E2328; --btn-fg:#FFFFFF; --hl-bg:#1E2328; --hl-fg:#FFFFFF; --band:#1E2328;
  --glow:color-mix(in srgb,#C6A052 22%,transparent); --shadow:rgba(30,35,40,.2);
  --bg-a:color-mix(in srgb,#C6A052 16%,transparent); --bg-b:color-mix(in srgb,#46566A 8%,transparent);
  --viz-hi:#1E2328; --viz-lo:#8A9096; --p-ink:#1E2328; --p-accent:#B08A3C; --p-bg:#FFFFFF;
  color-scheme:light;
}
html[data-theme="slate"]{
  --deep:#1B2530; --abyss:#151D26; --panel:#222E3A; --panel-2:#283543;
  --cream:#EDEAE3; --navy:#1B2530; --gold:#CFAE66; --gold-hi:color-mix(in srgb,#CFAE66 72%,#fff); --accent2:#A9C0D6;
  --mute:color-mix(in srgb,#EDEAE3 70%,transparent); --faint:color-mix(in srgb,#EDEAE3 46%,transparent);
  --rule:color-mix(in srgb,#EDEAE3 11%,transparent); --rule-2:color-mix(in srgb,#EDEAE3 18%,transparent);
  --btn-bg:#CFAE66; --btn-fg:#1B2530; --hl-bg:#CFAE66; --hl-fg:#1B2530;
  --glow:color-mix(in srgb,#CFAE66 12%,transparent); --shadow:rgba(0,0,0,.6);
  --bg-a:color-mix(in srgb,#2E4052 40%,transparent); --bg-b:color-mix(in srgb,#CFAE66 8%,transparent);
  --viz-hi:#CFAE66; --viz-lo:#6C7885; --p-ink:#EDEAE3; --p-accent:#CFAE66; --p-bg:#1B2530;
  color-scheme:dark;
}
html[data-theme="oxblood"]{
  --deep:#2A1519; --abyss:#221013; --panel:#331A1F; --panel-2:#3A1E23;
  --cream:#F2E8DC; --navy:#2A1519; --gold:#D6B26C; --gold-hi:color-mix(in srgb,#D6B26C 72%,#fff); --accent2:#E3BDB4;
  --mute:color-mix(in srgb,#F2E8DC 70%,transparent); --faint:color-mix(in srgb,#F2E8DC 46%,transparent);
  --rule:color-mix(in srgb,#F2E8DC 11%,transparent); --rule-2:color-mix(in srgb,#F2E8DC 18%,transparent);
  --btn-bg:#D6B26C; --btn-fg:#2A1519; --hl-bg:#D6B26C; --hl-fg:#2A1519;
  --glow:color-mix(in srgb,#D6B26C 12%,transparent); --shadow:rgba(0,0,0,.6);
  --bg-a:color-mix(in srgb,#4A2228 40%,transparent); --bg-b:color-mix(in srgb,#D6B26C 8%,transparent);
  --viz-hi:#D6B26C; --viz-lo:#7F6468; --p-ink:#F2E8DC; --p-accent:#D6B26C; --p-bg:#2A1519;
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--deep);color:var(--cream);font:400 16px/1.6 var(--f-body);-webkit-font-smoothing:antialiased;overflow-x:clip}
strong,b{font-weight:600}
img,svg,canvas{display:block;max-width:100%}
a{color:inherit}
p,h1,h2,h3,h4,ul,ol,figure,dl,dd,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
button{font:inherit;color:inherit}
::selection{background:var(--hl-bg);color:var(--hl-fg)}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:6px}
.sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:fixed;left:16px;top:-60px;z-index:100;background:var(--btn-bg);color:var(--btn-fg);padding:10px 16px;border-radius:10px;font-weight:600;text-decoration:none;transition:top .3s}
.skip:focus{top:12px}

/* ---------- type ---------- */
.wrap{max-width:var(--max);margin-inline:auto;padding-inline:var(--gutter)}
.sec{padding-block:clamp(64px,8vw,110px);position:relative}
.d-hero,.d-xxl,.d-xl,.d-l,.d-m{font-family:var(--f-display);color:var(--cream);text-wrap:balance}
.d-hero{font-weight:800;font-stretch:88%;font-size:clamp(38px,4.8vw,66px);line-height:1;letter-spacing:-.025em}
.d-xxl{font-weight:700;font-stretch:90%;font-size:clamp(30px,3.3vw,46px);line-height:1.06;letter-spacing:-.02em}
.d-xl{font-weight:700;font-stretch:90%;font-size:clamp(26px,2.6vw,36px);line-height:1.1;letter-spacing:-.018em}
.d-l{font-weight:600;font-size:clamp(19px,1.6vw,22px);line-height:1.2;letter-spacing:-.01em}
.d-m{font-weight:600;font-size:17px;line-height:1.3}
.lede{font-size:clamp(16px,1.2vw,18px);line-height:1.6;color:var(--mute);max-width:54ch;text-wrap:pretty}
.lede b,.body-l b{color:var(--cream);font-weight:600}
.body-l{font-size:16px;line-height:1.65;color:var(--mute);max-width:60ch}
.mono{font-family:var(--f-mono);font-weight:500;font-size:12px;letter-spacing:.02em}
.gold{color:var(--gold)}
.muted{color:var(--mute)}
.cite{font-size:13px;color:var(--faint);max-width:72ch}
/* round 6: each section label is a small search pill (the finder shows the same name), not a mono all-caps eyebrow */
.kicker{position:relative;display:inline-block;padding:7px 14px 7px 32px;border-radius:999px;box-shadow:inset 0 0 0 1.5px var(--rule-2);
  font:500 14px/1.2 var(--f-body);letter-spacing:0;color:var(--cream);margin-bottom:18px}
.kicker::before{content:"";position:absolute;left:12px;top:50%;width:8px;height:8px;border:2px solid var(--gold);border-radius:50%;translate:0 -62%}
.kicker::after{content:"";position:absolute;left:21px;top:50%;width:5px;height:2px;border-radius:2px;background:var(--gold);rotate:45deg;translate:0 3px}
.hl{background:none;color:inherit;padding:0}
.sec-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(20px,4vw,64px);align-items:end;margin-bottom:clamp(28px,4vw,44px)}
.sec-head .lede{justify-self:end}
@media (max-width:860px){.sec-head{grid-template-columns:1fr}.sec-head .lede{justify-self:start}}
.diamonds li{position:relative;padding-left:30px;color:var(--mute);font-size:15.5px}
.diamonds li+li{margin-top:12px}
.diamonds li::before{content:"";position:absolute;left:4px;top:.5em;width:9px;height:9px;border:1.5px solid var(--gold);transform:rotate(45deg)}
.diamonds b{color:var(--cream);font-weight:600}

/* ---------- panels (solid) ---------- */
.glass,.panel-s{position:relative;border-radius:var(--r);background:var(--panel-2);box-shadow:inset 0 0 0 1px var(--rule)}

/* ---------- buttons ---------- */
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:46px;padding:0 20px;border-radius:8px;border:0;
  font:600 15px/1 var(--f-body);text-decoration:none;cursor:pointer;white-space:nowrap;transition:background-color .2s,color .2s,box-shadow .2s}
.btn-gold{background:var(--btn-bg);color:var(--btn-fg)}
.btn-gold:hover{background:color-mix(in srgb,var(--btn-bg) 86%,var(--cream))}
.btn-glass{background:transparent;color:var(--cream);box-shadow:inset 0 0 0 1.5px var(--rule-2)}
.btn-glass::before,.btn-glass::after{display:none}
.btn-glass:hover{box-shadow:inset 0 0 0 1.5px var(--gold)}
.btn-row{display:flex;flex-wrap:wrap;gap:10px}
.btn .ico{width:17px;height:17px;flex:none}

/* ---------- top bar: section links on the home page, page links elsewhere ---------- */
.nav{position:fixed;z-index:50;top:0;left:0;right:0;transition:background-color .4s,box-shadow .4s}
.nav.is-compact{background:var(--deep);box-shadow:0 1px 0 var(--rule)}
.nav-in{max-width:var(--max);margin-inline:auto;padding:0 var(--gutter);height:calc(env(safe-area-inset-top,0px) + 72px);padding-top:env(safe-area-inset-top,0px);display:flex;align-items:center;gap:18px;transition:height .4s var(--ease)}
.nav.is-compact .nav-in{height:calc(env(safe-area-inset-top,0px) + 60px)}
.nav-logo{display:block;flex:none;border-radius:8px}
.nav-logo svg{height:26px;width:auto;--body:var(--cream);--ground:var(--deep)}
.nav-cta{min-height:40px;padding:0 16px;font-size:14px;flex:none;margin-left:auto}
/* the finder (shared/finder.js) sits in the middle of the bar; these are the tokens it and the view switch read */
:root{--fd-bg:var(--deep);--fd-panel:var(--panel-2);--fd-ink:var(--cream);--fd-mute:var(--mute);--fd-rule:var(--rule-2);--fd-acc:var(--gold);--fd-fill:var(--btn-bg);--fd-on:var(--btn-fg)}
@media (max-width:560px){.nav-cta{display:none}}

/* page change */
main,.foot{transition:opacity .3s ease}
.leaving main,.leaving .foot,.iris-in main,.iris-in .foot{opacity:0}


/* ---------- footer ---------- */
.foot{border-top:1px solid var(--rule);margin-top:clamp(40px,6vw,72px);padding:44px var(--gutter) calc(env(safe-area-inset-bottom,0px) + 64px);background:var(--deep)}
.foot-card{max-width:var(--max);margin-inline:auto;display:grid;gap:32px;grid-template-columns:1.4fr 1fr 1fr}
.foot-card svg{height:30px;width:auto;--body:var(--cream);--ground:var(--deep)}
.foot-card h4{font:500 12px/1 var(--f-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--gold);margin-bottom:14px}
.foot-card li+li{margin-top:6px}
.foot-card a{text-decoration:none;color:var(--mute);font-size:15px;transition:color .25s}
.foot-card a:hover{color:var(--cream)}
.foot-note{max-width:var(--max);margin:26px auto 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;color:var(--faint);font-size:13px}
.foot-note a{text-decoration:none}
@media (max-width:760px){.foot-card{grid-template-columns:1fr 1fr}.foot-card>div:first-child{grid-column:1/-1}}

/* ---------- shared inner-page pieces (v2 pages keep working) ---------- */
.page-hero{padding-top:clamp(116px,12vw,160px);padding-bottom:clamp(24px,3vw,40px)}
.page-hero .d-xl,.page-hero .d-xxl{max-width:20ch}
.page-hero .lede{margin-top:18px}
.stack>*+*{margin-top:var(--gap,16px)}
.split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(28px,5vw,72px);align-items:start}
@media (max-width:900px){.split{grid-template-columns:1fr}}
.sticky-head{position:sticky;top:100px}
@media (max-width:900px){.sticky-head{position:static}}
.panel{--pad:clamp(20px,2.4vw,28px);padding:var(--pad)}
.ticks li{position:relative;padding-left:24px;color:var(--mute);font-size:15px}
.ticks li+li{margin-top:9px}
.ticks li::before{content:"";position:absolute;left:0;top:.58em;width:12px;height:12px;margin-top:-6px;border-radius:50%;border:1.5px solid var(--gold)}
.ticks li::after{content:"";position:absolute;left:4.5px;top:calc(.58em - 3px);width:3px;height:6px;border:solid var(--gold);border-width:0 1.5px 1.5px 0;transform:rotate(45deg)}
.ticks b{color:var(--cream);font-weight:600}
.band{border-top:1px solid var(--rule)}
.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 8px;border-radius:4px;font:500 11.5px/1.2 var(--f-mono);color:var(--mute);box-shadow:inset 0 0 0 1px var(--rule-2);white-space:nowrap}
.tag.ai{color:var(--gold);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--gold) 45%,transparent)}
/* no fade-in reveals (round 5): content is simply there */

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}
}

/* the intro (round 14): html.intro covers the page before first paint; shared/intro.js takes over and plays it.
   If the script never arrives, the cover fades by itself after 3 s. */
html.intro::after{content:"";position:fixed;inset:0;z-index:9998;background:var(--deep);animation:introSafe .4s 3s forwards}
@keyframes introSafe{to{opacity:0;visibility:hidden}}

/* round 16: the form's error colours were set for dark grounds; on paper they need to be deeper */
html[data-tone="light"] .field [aria-invalid="true"]{border-color:#B4492E}
html[data-tone="light"] .err{color:#A13D22}