:root{
  --bg:#faf8f2;
  --bg-elevated:#ffffff;
  --bg-sunk:#f2ede0;
  --ink:#1b2430;
  --ink-soft:#4b5568;
  --navy:#1c3f66;
  --sky:#3f7fb8;
  --brass:#a2762f;
  --brass-soft:#c99a52;
  --line:rgba(28,63,102,0.18);
  --shadow:0 18px 40px -22px rgba(20,30,45,0.35);
  --radius:14px;
  --on-brass:#20180a;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0e141d;
    --bg-elevated:#161f2c;
    --bg-sunk:#0b1017;
    --ink:#e9e6da;
    --ink-soft:#a9b2c2;
    --navy:#8fb8e6;
    --sky:#bfe0f7;
    --brass:#dcae5f;
    --brass-soft:#e9c48a;
    --line:rgba(233,230,218,0.16);
    --shadow:0 18px 44px -20px rgba(0,0,0,0.6);
    --on-brass:#20180a;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0e141d;
  --bg-elevated:#161f2c;
  --bg-sunk:#0b1017;
  --ink:#e9e6da;
  --ink-soft:#a9b2c2;
  --navy:#8fb8e6;
  --sky:#bfe0f7;
  --brass:#dcae5f;
  --brass-soft:#e9c48a;
  --line:rgba(233,230,218,0.16);
  --shadow:0 18px 44px -20px rgba(0,0,0,0.6);
  --on-brass:#20180a;
  color-scheme:dark;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:'Source Serif 4', Georgia, 'Times New Roman', serif;
  font-size:17px;
  line-height:1.6;
}
h1,h2,h3,h4{
  font-family:'Hanken Grotesk', ui-sans-serif, system-ui, sans-serif;
  color:var(--navy);
  margin:0;
  text-wrap:balance;
  letter-spacing:-0.01em;
}
.mono{
  font-family:'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}
a{color:var(--sky);}
img{display:block;max-width:100%;}
.wrap{max-width:1120px;margin:0 auto;padding:0 28px;}
.narrow{max-width:680px;}
section{padding:88px 0;}
@media (max-width:640px){ section{padding:60px 0;} }

.page-head{padding:64px 0 8px;}
.page-head .eyebrow{margin-bottom:10px;}
.page-head h1{font-size:clamp(30px,4.6vw,46px);}
.page-head p.lead{color:var(--ink-soft);margin-top:16px;font-size:18px;max-width:64ch;}

.eyebrow{
  font-family:'IBM Plex Mono', monospace;
  text-transform:uppercase;
  letter-spacing:0.14em;
  font-size:12.5px;
  color:var(--brass);
  font-weight:500;
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;height:1px;
  background:var(--brass);
  display:inline-block;
}

/* ---------- nav ---------- */
header.site{
  position:sticky;top:0;z-index:40;
  background:color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.navrow{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 28px;max-width:1120px;margin:0 auto;gap:18px;
}
.brandmark{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--navy);}
.brandmark img{height:30px;width:auto;}
.brandmark span{
  font-family:'Hanken Grotesk',sans-serif;font-weight:600;font-size:18px;color:var(--ink);
  letter-spacing:-0.01em;
}
nav.links{display:flex;align-items:center;gap:28px;}
nav.links a{
  color:var(--ink-soft);text-decoration:none;font-family:'Hanken Grotesk',sans-serif;
  font-size:14.5px;font-weight:500;
}
nav.links a:hover{color:var(--navy);}
nav.links a.current{color:var(--navy);font-weight:700;}
.navlinks-inline{display:flex;gap:26px;}
@media (max-width:760px){ .navlinks-inline{display:none;} }
.btn{
  font-family:'Hanken Grotesk',sans-serif;font-weight:600;font-size:14.5px;
  border-radius:999px;padding:11px 22px;text-decoration:none;display:inline-flex;
  align-items:center;gap:8px;border:1px solid transparent;white-space:nowrap;
  cursor:pointer;
}
.btn-brass{background:var(--brass);color:var(--on-brass);}
.btn-brass:hover{background:var(--brass-soft);}
.btn-ghost{border-color:var(--line);color:var(--navy);background:transparent;}
.btn-ghost:hover{border-color:var(--brass);}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;inset:0;
  background:
    radial-gradient(120% 90% at 84% 6%, rgba(63,127,184,0.32) 0%, rgba(63,127,184,0) 55%),
    linear-gradient(165deg, #0b111b 0%, #122134 46%, #1c3f66 100%);
}
.hero-texture{
  position:absolute;inset:0;width:100%;height:100%;
}
.hero-inner{
  position:relative;padding:64px 28px 100px;max-width:1120px;margin:0 auto;
  color:#f4efe1;
}
.hero-logo{
  width:min(400px, 68vw);height:auto;margin-bottom:22px;display:block;
  filter:drop-shadow(0 14px 32px rgba(0,0,0,0.4));
}
.hero h1{
  color:#faf6ea;font-size:clamp(34px,5.4vw,58px);line-height:1.06;max-width:15ch;
}
.hero p.lead{
  max-width:52ch;color:#d9dee8;font-size:19px;margin-top:22px;line-height:1.6;
}
.hero-ctas{display:flex;gap:14px;margin-top:38px;flex-wrap:wrap;}
.hero .btn-ghost{border-color:rgba(244,239,225,0.4);color:#f4efe1;}
.hero .btn-ghost:hover{border-color:#e9c48a;}

/* ---------- home teasers ---------- */
.teasers{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
@media (max-width:860px){ .teasers{grid-template-columns:1fr;} }
.teaser-card{
  background:var(--bg-elevated);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;box-shadow:var(--shadow);display:flex;flex-direction:column;
  text-decoration:none;
}
.teaser-card h3{font-size:20px;color:var(--navy);margin-top:4px;}
.teaser-card p{color:var(--ink-soft);margin-top:12px;font-size:15.5px;flex:1;}
.teaser-card .go{
  margin-top:18px;font-family:'Hanken Grotesk';font-weight:600;font-size:14px;color:var(--brass);
}
.teaser-card:hover .go{color:var(--navy);}

/* ---------- about / stats ---------- */
.about-grid{display:grid;grid-template-columns:1.1fr 0.9fr;gap:64px;align-items:start;}
@media (max-width:860px){ .about-grid{grid-template-columns:1fr;gap:40px;} }
.about-grid h2{font-size:clamp(26px,3.4vw,34px);}
.about-grid p{color:var(--ink-soft);margin-top:18px;}
.instrument-panel{
  background:var(--bg-elevated);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow);
}
.instrument-panel .panel-label{
  font-family:'IBM Plex Mono';font-size:11.5px;letter-spacing:0.1em;text-transform:uppercase;
  color:var(--ink-soft);margin-bottom:18px;display:block;
}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.stat-tile{
  border:1px solid var(--line);border-radius:10px;padding:16px;background:var(--bg-sunk);
}
.stat-tile .num{
  font-family:'Hanken Grotesk';font-weight:700;font-size:26px;color:var(--navy);
  font-variant-numeric:tabular-nums;
}
.stat-tile .label{font-size:13px;color:var(--ink-soft);margin-top:4px;line-height:1.35;}
.sample-note{
  font-size:12.5px;color:var(--ink-soft);margin-top:18px;line-height:1.5;
  font-style:italic;padding-top:16px;border-top:1px solid var(--line);
}

/* ---------- waypoints / case studies ---------- */
.section-head{max-width:680px;margin-bottom:52px;}
.section-head h2{font-size:clamp(26px,3.4vw,36px);}
.section-head p{color:var(--ink-soft);margin-top:16px;font-size:18px;}

.waypoints{display:flex;flex-direction:column;gap:64px;}
.waypoint{
  display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:center;
}
.waypoint:nth-child(even) .wp-figure{order:2;}
@media (max-width:860px){
  .waypoint{grid-template-columns:1fr;gap:22px;}
  .waypoint:nth-child(even) .wp-figure{order:0;}
}
.wp-code{
  font-family:'IBM Plex Mono';font-size:12.5px;color:var(--brass);letter-spacing:0.08em;
  display:block;margin-bottom:10px;
}
.waypoint h3{font-size:24px;}
.waypoint p{color:var(--ink-soft);margin-top:14px;}
.wp-readout{
  margin-top:18px;padding:12px 14px;border-left:2px solid var(--brass);
  background:var(--bg-sunk);border-radius:0 8px 8px 0;
  font-size:14.5px;color:var(--ink);
}
.wp-readout .mono{color:var(--brass);margin-right:6px;}
.wp-figure{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);background:var(--bg-elevated);
}
.wp-figure img{width:100%;height:auto;}

/* ---------- approach ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
@media (max-width:860px){ .steps{grid-template-columns:1fr;} }
.step{
  background:var(--bg-elevated);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 24px;
}
.step .step-no{
  font-family:'IBM Plex Mono';color:var(--brass);font-size:13px;letter-spacing:0.08em;
}
.step h3{font-size:19px;margin-top:10px;}
.step p{color:var(--ink-soft);margin-top:12px;font-size:15.5px;}

/* ---------- flight plan / contact ---------- */
.flightplan{
  background:var(--bg-elevated);border:1px solid var(--line);border-radius:20px;
  padding:52px;box-shadow:var(--shadow);
}
@media (max-width:640px){ .flightplan{padding:30px 22px;} }
.fp-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;}
@media (max-width:860px){ .fp-grid{grid-template-columns:1fr;} }
.fp-grid h2{font-size:clamp(28px,4vw,40px);}
.fp-grid p.lead{color:var(--ink-soft);margin-top:16px;font-size:17px;}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px;}
.field label{
  font-family:'IBM Plex Mono';font-size:12px;letter-spacing:0.06em;text-transform:uppercase;
  color:var(--ink-soft);
}
.field input, .field textarea{
  font-family:'Source Serif 4', Georgia, serif;font-size:16px;
  background:var(--bg-sunk);border:1px solid var(--line);border-radius:8px;
  padding:11px 13px;color:var(--ink);resize:vertical;
}
.field textarea{min-height:96px;}
.field input:focus, .field textarea:focus{
  outline:2px solid var(--sky);outline-offset:1px;
}
.fp-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:6px;}
.fp-note{font-size:13.5px;color:var(--ink-soft);margin-top:20px;line-height:1.5;}
.fp-copy-hint{font-size:13px;color:var(--ink-soft);}
.btn[disabled],.btn[aria-disabled="true"]{opacity:0.6;cursor:not-allowed;}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:44px 0;}
.footer-row{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:18px;}
.footer-brand{display:flex;align-items:center;gap:10px;}
.footer-brand img{height:24px;width:auto;}
.footer-brand span{font-family:'Hanken Grotesk';font-weight:600;color:var(--ink);}
footer .fine{font-size:13px;color:var(--ink-soft);}
footer .tagline{font-family:'IBM Plex Mono';font-size:12px;color:var(--brass);letter-spacing:0.06em;margin-top:4px;}

@media (prefers-reduced-motion:no-preference){
  .waypoint, .step, .stat-tile, .teaser-card{transition:transform .25s ease;}
}