:root{
  --ground:#f6f7f8;
  --surface:#ffffff;
  --surface-alt:#eceef1;
  --ink:#15191d;
  --ink-muted:#5b656f;
  --rule:#dbe0e4;
  --rule-strong:#c3cbd2;
  --accent:#1d4e6b;
  --accent-ink:#ffffff;
  --accent-hover:#153b52;
  --focus:#1d4e6b;

  --sans:"IBM Plex Sans","Segoe UI",system-ui,-apple-system,Helvetica,Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --measure:62ch;
  --container:64rem;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --ground:#101418;
    --surface:#171c21;
    --surface-alt:#1c2328;
    --ink:#e7eaed;
    --ink-muted:#99a3ad;
    --rule:#262d34;
    --rule-strong:#39424a;
    --accent:#84bcd8;
    --accent-ink:#0d1216;
    --accent-hover:#a3cfe5;
    --focus:#84bcd8;
  }
}
:root[data-theme="dark"]{
  --ground:#101418;
  --surface:#171c21;
  --surface-alt:#1c2328;
  --ink:#e7eaed;
  --ink-muted:#99a3ad;
  --rule:#262d34;
  --rule-strong:#39424a;
  --accent:#84bcd8;
  --accent-ink:#0d1216;
  --accent-hover:#a3cfe5;
  --focus:#84bcd8;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ground);
  color:var(--ink);
  font-family:var(--sans);
  font-size:clamp(1rem,0.97rem + 0.18vw,1.0625rem);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto}
a{color:var(--accent)}
:focus-visible{outline:2px solid var(--focus);outline-offset:3px}

.wrap{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:20px}
@media (min-width:52rem){.wrap{padding-inline:40px}}

h1,h2,h3{margin:0;text-wrap:balance;letter-spacing:-0.015em;font-weight:500}
h1{font-size:clamp(1.95rem,1.35rem + 2.9vw,3.05rem);line-height:1.12}
h2{font-size:clamp(1.3rem,1.15rem + 0.8vw,1.7rem);line-height:1.2}
h3{font-size:1.0625rem;font-weight:600;letter-spacing:-0.005em;line-height:1.35}
p{margin:0}
.measure{max-width:var(--measure)}
.muted{color:var(--ink-muted)}

.label{
  font-family:var(--mono);
  font-size:0.7rem;
  font-weight:400;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--ink-muted);
}

/* ---------- header ---------- */
.masthead{border-bottom:1px solid var(--rule)}
.masthead .wrap{
  display:flex;flex-wrap:wrap;align-items:baseline;
  gap:6px 16px;padding-block:22px;
}
.wordmark{
  font-size:1.3rem;letter-spacing:-0.02em;font-weight:500;
  color:var(--ink);text-decoration:none;
}
.wordmark .eq{font-weight:600;letter-spacing:0.02em}

/* ---------- sections ---------- */
section{border-bottom:1px solid var(--rule)}
section:last-of-type{border-bottom:0}
.sec{padding-block:clamp(3rem,2rem + 5vw,5.25rem)}
.stack{display:flex;flex-direction:column;gap:1.5rem;align-items:flex-start}

.hero{padding-block:clamp(3.5rem,2rem + 8vw,7rem)}
.hero .lead{
  font-size:clamp(1.06rem,1rem + 0.5vw,1.25rem);
  line-height:1.55;color:var(--ink-muted);max-width:56ch;
}
/* audience identifier + headline, variant pages only */
.hero-head{
  display:flex;flex-direction:column;
  gap:0.7rem;align-items:flex-start;max-width:100%;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-block;font:inherit;font-weight:500;
  text-decoration:none;border:1px solid var(--accent);
  border-radius:2px;padding:0.7em 1.35em;
  transition:background-color .15s ease,border-color .15s ease,color .15s ease;
}
.btn-solid{background:var(--accent);color:var(--accent-ink)}
.btn-solid:hover{background:var(--accent-hover);border-color:var(--accent-hover)}
.btn-line{background:transparent;color:var(--accent)}
.btn-line:hover{background:var(--accent);color:var(--accent-ink)}
@media (prefers-reduced-motion:reduce){.btn{transition:none}}

/* ---------- capability row ---------- */
.cap-head{margin-bottom:2.25rem}
.cards{display:grid;gap:1px;background:var(--rule);border:1px solid var(--rule);border-radius:3px}
@media (min-width:46rem){.cards{grid-template-columns:repeat(3,1fr)}}
.card{
  background:var(--surface);
  padding:1.6rem 1.5rem 1.75rem;
  display:flex;flex-direction:column;gap:0.6rem;
}
.card p{color:var(--ink-muted);font-size:0.9875rem;line-height:1.6}

/* ---------- question block ---------- */
.question{
  margin:2rem 0 0;
  border-left:2px solid var(--accent);
  padding:0.2rem 0 0.2rem 1.25rem;
  max-width:40ch;
}
.question span{
  display:block;
  font-size:clamp(1.4rem,1.1rem + 1.6vw,2.15rem);
  line-height:1.18;letter-spacing:-0.02em;color:var(--ink);
  text-wrap:balance;
}

/* ---------- audience block (variant pages only) ---------- */
.offer{
  background:var(--surface-alt);
  border-radius:3px;
  padding:1.9rem 1.75rem;
  margin-top:2rem;
  max-width:40rem;
  display:flex;flex-direction:column;gap:0.7rem;
  align-items:flex-start;
}
.offer p{color:var(--ink-muted);max-width:52ch}
.offer .btn{margin-top:0.55rem}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--rule)}
footer .wrap{
  padding-block:2.5rem;
  display:flex;flex-wrap:wrap;justify-content:space-between;
  align-items:baseline;gap:0.75rem 2rem;
}
footer .mark{font-size:1.05rem;font-weight:500;letter-spacing:-0.02em}
footer .mark .eq{font-weight:600;letter-spacing:0.02em}
footer a{color:var(--ink-muted);text-decoration:none;border-bottom:1px solid var(--rule-strong)}
footer a:hover{color:var(--ink)}