/* Upper Strata — site styles. Brand: brand/brand-guidelines.md */
:root{
  --orange:#FF591E; --orange-deep:#C1532C; --orange-light:#FF7F34;
  --ink:#231F20; --charcoal:#343434; --grey:#5B5A54;
  --white:#FFFFFF; --stratum:#F4F3F0; --bedrock:#1A1A1A; --navy:#02295D;
  --line:rgba(0,0,0,.10); --line-d:rgba(255,255,255,.14);
  --maxw:1120px; --pad:7vw;
  --sans:"Inter",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --disp:"Space Grotesk","Inter",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
}
*{box-sizing:border-box} html{scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);color:var(--charcoal);background:var(--white);line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:var(--disp);color:var(--ink);line-height:1.08;letter-spacing:-.01em;margin:0 0 .5em;font-weight:700}
h1{font-size:clamp(34px,5.2vw,60px)} h2{font-size:clamp(26px,3.6vw,40px)} h3{font-size:19px}
p{margin:0 0 1em} a{color:inherit}
.wrap{max-width:var(--maxw);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--orange);margin:0 0 14px}
.lead{font-size:clamp(17px,1.7vw,20px);color:var(--grey);max-width:60ch}
.muted{color:var(--grey)} .center{text-align:center} .center .lead{margin-left:auto;margin-right:auto}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--orange);color:#fff;border:1.5px solid var(--orange);
  border-radius:9px;padding:13px 24px;font-weight:600;font-size:15px;text-decoration:none;cursor:pointer;transition:.15s}
.btn:hover{background:var(--orange-deep);border-color:var(--orange-deep)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.on-dark .btn-ghost{color:#fff;border-color:rgba(255,255,255,.5)} .on-dark .btn-ghost:hover{background:#fff;color:var(--ink)}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:var(--bedrock);border-bottom:1px solid var(--line-d)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;padding-top:14px;padding-bottom:14px}
.nav img{height:34px;display:block}
.nav-links{display:flex;gap:30px;align-items:center}
.nav-links a{color:#d7d7d5;text-decoration:none;font-size:15px;font-weight:500}
.nav-links a:hover{color:#fff}
.nav .btn{padding:10px 18px;font-size:14px}

/* sections */
section{scroll-margin-top:72px}
.band{padding:clamp(56px,8vw,104px) 0}
.band.stratum{background:var(--stratum)}
.band.dark{background:var(--bedrock);color:#cfcfcd}
.band.dark h1,.band.dark h2,.band.dark h3{color:#fff}
.band.dark .lead,.band.dark .muted{color:#a9a9a6}

/* hero */
.hero{background:var(--bedrock);color:#cfcfcd;padding:clamp(64px,9vw,120px) 0 clamp(56px,7vw,96px)}
.hero h1{color:#fff;max-width:16ch}
.hero .lead{color:#bdbdba;margin-top:6px}
.hero .cta-row{display:flex;gap:14px;flex-wrap:wrap;margin:30px 0 26px}
.trust{font-family:var(--mono);font-size:12.5px;color:#8e8e8b;letter-spacing:.02em;border-top:1px solid var(--line-d);padding-top:18px;max-width:70ch}
.trust b{color:#cfcfcd;font-weight:500}

/* grids & cards */
.grid{display:grid;gap:18px}
.cols-3{grid-template-columns:repeat(3,1fr)} .cols-2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:26px 24px}
.stratum .card{background:#fff}
.card .k{font-family:var(--mono);font-size:12px;color:var(--orange);letter-spacing:.04em;margin-bottom:10px}
.card h3{margin-bottom:8px}
.card p{font-size:15px;margin:0;color:var(--grey)}

/* proof */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.feature .card{border-left:3px solid var(--orange)}
.legacy{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:24px;font-size:15px;color:var(--grey)}
.legacy b{color:var(--ink);font-family:var(--disp)}
.tag-pill{display:inline-block;font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;
  color:var(--grey);border:1px solid var(--line);border-radius:999px;padding:4px 11px;margin:0 6px 6px 0}

/* why */
.why{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;counter-reset:n}
.why .item{padding-top:18px;border-top:2px solid var(--orange)}
.why h3{font-size:20px}

/* cta band */
.ctaband{text-align:center}
.ctaband h2{max-width:18ch;margin:0 auto .4em}

/* contact / form */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
form{display:grid;gap:14px}
label{font-size:13px;font-weight:600;color:var(--ink);display:block;margin-bottom:6px}
input,textarea{width:100%;font-family:var(--sans);font-size:15px;color:var(--ink);background:#fff;
  border:1px solid var(--line);border-radius:9px;padding:12px 14px}
input:focus,textarea:focus{outline:none;border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,89,30,.14)}
textarea{min-height:120px;resize:vertical}
.hp{position:absolute;left:-9999px}
.contact-info p{margin:0 0 14px}
.contact-info .lbl{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--grey);display:block;margin-bottom:3px}
.contact-info a{color:var(--orange);text-decoration:none;font-weight:600}

/* footer */
.footer{background:var(--bedrock);color:#9a9a97;padding:54px 0 30px;font-size:14px}
.footer img{height:30px;margin-bottom:16px}
.footer-grid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:28px}
.footer a{color:#cfcfcd;text-decoration:none} .footer a:hover{color:#fff}
.footer .cols{display:flex;gap:54px;flex-wrap:wrap}
.footer .col a{display:block;margin-bottom:9px}
.footer .col .h{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:#6f6f6c;margin-bottom:12px}
.footer .legal{border-top:1px solid var(--line-d);margin-top:36px;padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;color:#6f6f6c;font-size:12.5px}

/* responsive */
@media(max-width:820px){
  .nav-links{display:none}
  .cols-3,.cols-2,.feature,.why,.contact-grid{grid-template-columns:1fr}
  .why{gap:22px}
}