/* Shared spine for the ontology sales pages.
 *
 * Tokens, the three pinned buy affordances, and the background motifs. Each
 * page then brings its own layout and its own ideas; nothing here should be so
 * opinionated that nine pages come out looking like one page.
 *
 * The motifs are all CSS — gradients, repeating-linear-gradient, conic — so a
 * page costs no image requests and stays sharp at any density.
 */

/* ---------- tokens ---------- */
:root{
  --ink:#f2f5fa;
  --ink-dim:#a7b0c0;
  --ink-faint:#6b7488;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.20);
  --rail-w:310px;
  --bar-h:60px;
  --max:1120px;
  --r:14px;
  --shadow:0 20px 60px -20px rgba(0,0,0,.75);
  --sans:'Inter','Helvetica Neue',Helvetica,Arial,sans-serif;
  --serif:'Iowan Old Style','Palatino Linotype',Palatino,Georgia,serif;
  --mono:'SFMono-Regular',Menlo,Consolas,'Liberation Mono',monospace;
}
html.is-light{
  --ink:#16181d;
  --ink-dim:#4a5160;
  --ink-faint:#7a8091;
  --line:rgba(0,0,0,.12);
  --line-strong:rgba(0,0,0,.26);
  --shadow:0 18px 46px -22px rgba(0,0,0,.35);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.font-serif{font-family:var(--serif)}
body.font-mono{font-family:var(--mono);font-size:16px}
img{max-width:100%;display:block}
a{color:var(--accent)}

h1,h2,h3{line-height:1.1;margin:0 0 .5em;letter-spacing:-.02em;font-weight:700}
h1{font-size:clamp(2.4rem,6vw,4.4rem)}
h2{font-size:clamp(1.7rem,3.4vw,2.6rem)}
h3{font-size:1.22rem;letter-spacing:-.01em}
p{margin:0 0 1.1em}

.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;z-index:999;background:var(--accent);color:#000;padding:10px 16px;border-radius:8px}

/* ---------- layout ---------- */
.wrap{max-width:var(--max);margin-inline:auto;padding-inline:24px}
/* Belt and braces: a page that sets `padding` shorthand on its own hero must
   still not lose the gutter. */
.wrap{padding-left:max(24px,env(safe-area-inset-left));padding-right:24px}
main{padding-top:var(--bar-h)}
@media(min-width:1180px){
  main{padding-right:calc(var(--rail-w) + 36px)}
  .foot__inner{padding-right:0}
}
section{padding-block:76px;position:relative}
.section-head{margin-bottom:34px;max-width:62ch}
.eyebrow{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.20em;
  text-transform:uppercase;color:var(--accent);margin:0 0 .8em;font-weight:600;
}
.lede{font-size:clamp(1.08rem,1.9vw,1.35rem);color:var(--ink-dim);max-width:60ch}
.dim{color:var(--ink-dim)}
.faint{color:var(--ink-faint)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;justify-content:center;
  padding:13px 22px;border-radius:10px;font-weight:700;font-size:.97rem;
  text-decoration:none;border:1px solid transparent;cursor:pointer;
  font-family:var(--sans);letter-spacing:-.01em;
  transition:transform .12s ease, box-shadow .12s ease, filter .12s ease;
}
.btn--buy{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#07090d;
  box-shadow:0 10px 30px -10px color-mix(in srgb,var(--accent) 70%,transparent);
}
.btn--buy:hover{transform:translateY(-2px);filter:brightness(1.07)}
.btn--wait{background:transparent;border-color:var(--accent);color:var(--accent)}
.btn--ghost{background:transparent;border-color:var(--line-strong);color:var(--ink)}
.btn--ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn--block{display:flex;width:100%}
.btn__price{
  font-family:var(--mono);font-size:.86rem;opacity:.78;
  padding-left:10px;border-left:1px solid rgba(0,0,0,.22);
}

/* ---------- 1. top bar ---------- */
.buybar{
  position:fixed;top:0;left:0;right:0;height:var(--bar-h);z-index:60;
  display:flex;align-items:center;gap:18px;padding:0 18px;
  background:color-mix(in srgb,var(--bg) 84%,transparent);
  backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid var(--line);
}
.buybar__home{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--ink);flex:0 0 auto}
.buybar__mark{color:var(--accent);font-size:1.15rem}
.buybar__school{font-weight:650;font-size:.9rem;letter-spacing:-.01em}
.buybar__mid{flex:1 1 auto;min-width:0;text-align:center}
.buybar__what{
  font-family:var(--mono);font-size:.76rem;letter-spacing:.13em;text-transform:uppercase;
  color:var(--ink-faint);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block;
}
.buybar__cta{padding:9px 16px;font-size:.9rem;flex:0 0 auto}
@media(max-width:760px){
  .buybar__school{display:none}
  .buybar__what{display:none}
}

/* ---------- 2. side rail ---------- */
.rail{
  position:fixed;top:calc(var(--bar-h) + 26px);right:26px;width:var(--rail-w);
  z-index:50;display:none;
}
@media(min-width:1180px){.rail{display:block}}
.rail__card{
  background:color-mix(in srgb,var(--panel) 92%,transparent);
  border:1px solid var(--line-strong);border-radius:var(--r);
  padding:22px;box-shadow:var(--shadow);
  backdrop-filter:blur(10px);
}
.rail__eyebrow{
  font-family:var(--mono);font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--accent);margin-bottom:10px;font-weight:600;
}
.rail__price{display:flex;align-items:baseline;gap:8px}
.rail__amount{font-size:2.5rem;font-weight:800;letter-spacing:-.04em;line-height:1}
.rail__unit{font-size:.8rem;color:var(--ink-faint)}
.rail__floor{font-size:.84rem;color:var(--ink-dim);margin:.5em 0 1em}
.rail__perks{list-style:none;margin:0 0 16px;padding:0;font-size:.87rem;color:var(--ink-dim)}
.rail__perks li{padding:5px 0 5px 20px;position:relative;line-height:1.4}
.rail__perks li::before{content:"→";position:absolute;left:0;color:var(--accent);font-weight:700}
.rail__note{font-size:.78rem;color:var(--ink-faint);margin:12px 0 0;text-align:center}

/* ---------- 3. dock bar (phones) ---------- */
.dockbar{
  position:fixed;left:0;right:0;bottom:0;z-index:60;display:flex;
  align-items:center;justify-content:space-between;gap:14px;padding:11px 16px;
  background:color-mix(in srgb,var(--bg) 92%,transparent);
  backdrop-filter:blur(14px);border-top:1px solid var(--line-strong);
}
.dockbar__text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.dockbar__text strong{font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dockbar__text span{font-size:.76rem;color:var(--ink-faint);font-family:var(--mono)}
.dockbar .btn{padding:11px 24px}
@media(min-width:1180px){.dockbar{display:none}}
@media(max-width:1179px){body{padding-bottom:70px}}

/* ---------- shared furniture ---------- */
.card{
  background:color-mix(in srgb,var(--panel) 80%,transparent);
  border:1px solid var(--line);border-radius:var(--r);padding:22px;
}
.grid{display:grid;gap:18px}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.grid--4{grid-template-columns:repeat(auto-fit,minmax(175px,1fr))}

.stat{text-align:left}
.stat__n{
  font-size:clamp(2rem,4.4vw,3.1rem);font-weight:800;letter-spacing:-.045em;
  line-height:1;display:block;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat__l{font-size:.8rem;color:var(--ink-dim);display:block;margin-top:8px;line-height:1.35}

.chip{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;
  font-size:.73rem;font-family:var(--mono);border:1px solid var(--line-strong);
  color:var(--ink-dim);white-space:nowrap;
}
.chip--on{border-color:var(--accent);color:var(--accent)}

.rule{height:1px;background:var(--line);border:0;margin:0}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--line);padding:52px 0 40px;margin-top:40px}
.foot__inner{max-width:var(--max);margin:0 auto;padding:0 24px;text-align:center}
.foot__lead{font-size:1.15rem;font-weight:650;margin-bottom:.6em}
.foot__links{font-size:.9rem;color:var(--ink-dim);margin-bottom:1.4em}
.foot__links a{color:var(--ink-dim);text-decoration:none;border-bottom:1px solid var(--line-strong)}
.foot__links a:hover{color:var(--accent);border-color:var(--accent)}
.foot__fine{font-size:.74rem;color:var(--ink-faint);font-family:var(--mono)}

/* ---------- background motifs ---------- */
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.5;
}
/* Lift real content above the motif layer. Only `position` values are set
 * here for elements that are NOT already positioned — .buybar, .rail and
 * .dockbar are fixed on purpose and setting `position:relative` here silently
 * unpinned all three, which is the whole reason those elements exist. */
main,.foot{position:relative;z-index:1}

body.motif-circuit::before{
  background:
    linear-gradient(var(--line) 1px,transparent 1px) 0 0/64px 64px,
    linear-gradient(90deg,var(--line) 1px,transparent 1px) 0 0/64px 64px,
    radial-gradient(circle at 78% 8%,color-mix(in srgb,var(--accent) 22%,transparent),transparent 55%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 78%);
}
body.motif-blueprint::before{
  background:
    linear-gradient(var(--line) 1px,transparent 1px) 0 0/28px 28px,
    linear-gradient(90deg,var(--line) 1px,transparent 1px) 0 0/28px 28px,
    radial-gradient(ellipse at 20% 0%,color-mix(in srgb,var(--accent) 20%,transparent),transparent 60%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 70%);
}
body.motif-ledger::before{
  background:
    repeating-linear-gradient(180deg,transparent 0 33px,var(--line) 33px 34px),
    radial-gradient(circle at 88% 4%,color-mix(in srgb,var(--accent) 18%,transparent),transparent 50%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 65%);
}
body.motif-bleed::before{
  background:
    radial-gradient(ellipse 60% 42% at 12% 6%,color-mix(in srgb,var(--accent) 34%,transparent),transparent 70%),
    radial-gradient(ellipse 52% 38% at 88% 20%,color-mix(in srgb,var(--accent-2) 32%,transparent),transparent 70%);
  filter:blur(24px);
}
body.motif-crt::before{
  background:repeating-linear-gradient(180deg,rgba(255,255,255,.045) 0 1px,transparent 1px 3px),
    radial-gradient(ellipse at 50% 0%,color-mix(in srgb,var(--accent) 16%,transparent),transparent 62%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 82%);
}
body.motif-newsprint::before{
  background:
    repeating-linear-gradient(90deg,transparent 0 2px,rgba(0,0,0,.022) 2px 3px),
    radial-gradient(ellipse at 84% 2%,color-mix(in srgb,var(--accent) 12%,transparent),transparent 52%);
  opacity:.9;
}
body.motif-garden::before{
  background:
    radial-gradient(circle at 14% 14%,color-mix(in srgb,var(--accent) 20%,transparent),transparent 42%),
    radial-gradient(circle at 86% 26%,color-mix(in srgb,var(--accent-2) 18%,transparent),transparent 44%),
    linear-gradient(90deg,var(--line) 1px,transparent 1px) 0 0/48px 48px;
  mask-image:linear-gradient(180deg,#000 0%,transparent 72%);
}
body.motif-solar::before{
  background:
    conic-gradient(from 210deg at 78% -6%,color-mix(in srgb,var(--accent) 26%,transparent),transparent 32%),
    repeating-linear-gradient(60deg,transparent 0 22px,var(--line) 22px 23px);
  mask-image:linear-gradient(180deg,#000 0%,transparent 66%);
}
body.motif-radar::before{
  background:
    repeating-radial-gradient(circle at 50% -12%,transparent 0 86px,var(--line) 86px 87px),
    radial-gradient(circle at 50% -6%,color-mix(in srgb,var(--accent) 18%,transparent),transparent 55%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 74%);
}
body.motif-forge::before{
  background:radial-gradient(ellipse 70% 44% at 50% -4%,color-mix(in srgb,var(--accent) 32%,transparent),transparent 68%);
}
body.motif-lens::before{
  background:
    repeating-radial-gradient(circle at 76% 10%,transparent 0 60px,var(--line) 60px 61px),
    radial-gradient(circle at 76% 10%,color-mix(in srgb,var(--accent) 18%,transparent),transparent 48%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 70%);
}
body.motif-broadcast::before{
  background:
    repeating-conic-gradient(from 0deg at 50% 0%,transparent 0 6deg,var(--line) 6deg 6.4deg),
    radial-gradient(ellipse at 50% 0%,color-mix(in srgb,var(--accent) 22%,transparent),transparent 58%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 60%);
}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* ---------- reveal ---------- */
.rv{opacity:0;transform:translateY(18px);transition:opacity .55s ease,transform .55s ease}
.rv--in{opacity:1;transform:none}