/* Tressel — site styles. Palette sampled from the Sept 2026 Information Memorandum. */
:root{
  --navy:#213253;
  --navy-deep:#17233c;
  --navy-ink:#0f1829;
  --navy-soft:#2f4470;
  --mist:#d7dbe3;
  --mist-2:#eceef2;
  --paper:#f7f8fa;
  --white:#ffffff;
  --ink:#1b2438;
  --ink-2:#4a5570;
  --line:rgba(33,50,83,.14);
  --line-dark:rgba(255,255,255,.16);
  --dusk:#e9b98f;        /* warm horizon tone from the IM sky */
  --radius:22px;
  --wrap:1200px;
  --gutter:clamp(16px,4vw,40px);
  --display:"Montserrat",system-ui,sans-serif;
  --body:"Montserrat",system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{font-family:var(--body);color:var(--ink);background:var(--white);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-2)}
.on-dark .eyebrow,.eyebrow.light{color:rgba(255,255,255,.7)}
h1,h2,h3{font-family:var(--display);line-height:1.08;letter-spacing:-.01em}
h2{font-size:clamp(30px,4.2vw,52px);font-weight:700}
h3{font-size:20px;font-weight:700}
.lede{font-size:clamp(18px,1.6vw,21px);color:var(--ink-2);max-width:62ch}
.on-dark{color:var(--white)}
.on-dark .lede,.sky .lede,.built .lede,.how .lede,.investors .lede,.values .lede,.contact .lede{color:rgba(255,255,255,.82)}
.fine{font-size:12.5px;color:var(--ink-2);line-height:1.5}
.on-dark .fine,.how .fine,.sky .fine,.built .fine{color:rgba(255,255,255,.62)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:10px;font:600 15px/1 var(--body);padding:15px 24px;border-radius:10px;text-decoration:none;border:1.5px solid transparent;cursor:pointer;transition:transform .15s,background .15s,color .15s,border-color .15s;white-space:nowrap}
.btn:hover{transform:translateY(-1px)}
.btn-white{background:var(--white);color:var(--navy)}
.btn-white:hover{background:var(--mist-2)}
.btn-ghost{border-color:rgba(255,255,255,.7);color:var(--white);background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-navy{background:var(--navy);color:var(--white)}
.btn-navy:hover{background:var(--navy-soft)}
.btn-line{border-color:var(--navy);color:var(--navy);background:transparent}
.btn-line:hover{background:var(--navy);color:var(--white)}
.btn svg{width:18px;height:18px}

/* header */
.site-head{position:sticky;top:0;z-index:50;background:var(--white);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px}
.site-head .logo img{height:30px;width:auto}
.nav{display:flex;align-items:center;gap:30px}
.nav a{text-decoration:none;font-size:15px;font-weight:500;color:var(--ink)}
.nav a:not(.btn):hover{color:var(--navy-soft)}
.nav .btn{padding:12px 18px;font-size:14px}
.nav a.btn-navy{color:var(--white)}
.nav-toggle{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer;color:var(--navy)}
@media (max-width:900px){
  .nav{position:fixed;inset:76px 0 auto 0;background:var(--white);flex-direction:column;align-items:stretch;gap:0;padding:8px var(--gutter) 20px;border-bottom:1px solid var(--line);transform:translateY(-120%);transition:transform .25s;box-shadow:0 20px 40px rgba(15,24,41,.12)}
  .nav.open{transform:none}
  .nav a{padding:14px 0;border-bottom:1px solid var(--line)}
  .nav .btn{margin-top:14px;justify-content:center}
  .nav-toggle{display:block}
}

/* sky backdrop — the IM's signature dusk image */
.sky{position:relative;background:var(--navy-deep) url(assets/sky.jpg) center/cover no-repeat;color:var(--white);isolation:isolate}
.sky::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(23,35,60,.35),rgba(23,35,60,.05) 60%,rgba(23,35,60,.25));z-index:-1}
.sky.alt{background-image:url(assets/sky2.jpg)}

section{position:relative}
.pad{padding:clamp(72px,10vw,140px) 0}

/* reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .8s ease,transform .8s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* footer */
.site-foot{background:var(--navy-ink);color:rgba(255,255,255,.72);padding:56px 0 36px;font-size:14px}
.site-foot .row{display:flex;flex-wrap:wrap;justify-content:space-between;gap:32px;align-items:flex-start}
.site-foot img{height:26px;width:auto;margin-bottom:14px}
.site-foot a{text-decoration:none;color:rgba(255,255,255,.85)}
.site-foot a:hover{color:var(--white)}
.site-foot ul{list-style:none;display:grid;gap:8px}
.site-foot .legal{margin-top:40px;padding-top:24px;border-top:1px solid var(--line-dark);font-size:12.5px;color:rgba(255,255,255,.5)}