/* BCT Analytic Solutions / Precision Causal Modeling — brand site */
:root{
  --navy:#061e38; --navy2:#0d315e; --blue:#1d538b; --teal:#0d7f8d; --cyan:#28a7b2;
  --gold:#f0af2f; --gold-lt:#ffd264;
  --ink:#12263a; --dim:#4a5b6e; --faint:#7b8a99;
  --bg:#ffffff; --bg2:#f5f8fb; --bg3:#eef3f8; --line:#e0e8f0; --line2:#cdd9e5;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue",Helvetica,Arial,sans-serif;
  --wrap:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%}
a{color:var(--teal);text-decoration:none}
a:hover{color:var(--blue)}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px}
h1,h2,h3,h4{color:var(--navy2);font-weight:800;letter-spacing:-.02em;line-height:1.12}
.eyebrow{font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--teal)}
.tm{font-size:.62em;vertical-align:super;font-weight:600}

/* nav */
.nav{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .row{display:flex;align-items:center;justify-content:space-between;height:70px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand img{height:38px;width:auto}
.nav .links{display:flex;align-items:center;gap:22px}
.nav .links a{font-size:14.5px;font-weight:600;color:var(--navy2)}
.nav .links a:hover{color:var(--teal)}
.nav .links .has{position:relative}
.nav .drop{position:absolute;top:100%;left:-14px;padding-top:10px;display:none}
.nav .has:hover .drop{display:block}
.nav .drop .inner{background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 18px 40px rgba(6,30,56,.13);padding:8px;min-width:220px}
.nav .drop a{display:block;padding:9px 14px;border-radius:8px;font-size:14px}
.nav .drop a:hover{background:var(--bg3)}
.btn{display:inline-block;font-size:14px;font-weight:800;letter-spacing:.01em;padding:12px 22px;border-radius:9px;border:2px solid transparent;transition:.16s;cursor:pointer;text-align:center}
.btn.gold{background:var(--gold);color:var(--navy);border-color:var(--gold)}
.btn.gold:hover{background:var(--gold-lt);border-color:var(--gold-lt);color:var(--navy)}
.btn.navy{background:var(--navy2);color:#fff;border-color:var(--navy2)}
.btn.navy:hover{background:var(--navy);color:#fff}
.btn.ghost{background:transparent;color:var(--navy2);border-color:var(--line2)}
.btn.ghost:hover{border-color:var(--teal);color:var(--teal)}
.btn.wht{background:#fff;color:var(--navy2);border-color:#fff}
.btn.wht:hover{background:var(--gold);border-color:var(--gold);color:var(--navy)}
.navtoggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:40px;background:none;border:1px solid var(--line2);border-radius:8px;cursor:pointer;flex:none;touch-action:manipulation;-webkit-tap-highlight-color:transparent}
.navtoggle span{display:block;width:22px;height:2px;background:var(--navy2);margin:0 auto;transition:.2s}

/* hero */
.hero{position:relative;background:radial-gradient(1200px 500px at 78% -8%,rgba(40,167,178,.14),transparent 60%),linear-gradient(180deg,var(--bg2),#fff);border-bottom:1px solid var(--line);overflow:hidden}
.hero .netbg{position:absolute;inset:0;opacity:.5;pointer-events:none}
.hero .inner{position:relative;padding:88px 0 78px;max-width:820px}
.hero h1{font-size:clamp(34px,5.2vw,60px);letter-spacing:-.03em}
.hero h1 .hl{color:var(--teal)}
.hero .sub{margin-top:20px;font-size:clamp(17px,1.7vw,21px);color:var(--dim);max-width:60ch;line-height:1.6}
.hero .cta-row{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.badge{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line2);border-radius:999px;padding:7px 15px;font-size:13px;font-weight:700;color:var(--navy2);margin-bottom:22px}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--gold)}

/* sections */
section{padding:76px 0}
.sec-tight{padding:52px 0}
.bg-soft{background:var(--bg2)}
.bg-navy{background:var(--navy);color:#fff}
.bg-navy h1,.bg-navy h2,.bg-navy h3{color:#fff}
.bg-teal{background:linear-gradient(135deg,var(--teal),var(--blue));color:#fff}
.bg-teal h1,.bg-teal h2,.bg-teal h3{color:#fff}
.section-h{font-size:clamp(26px,3.3vw,40px)}
.lead{font-size:clamp(16px,1.6vw,19px);color:var(--dim);max-width:68ch;margin-top:16px;line-height:1.65}
.bg-navy .lead,.bg-teal .lead{color:rgba(255,255,255,.86)}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}
.mt{margin-top:34px}

/* stat band */
.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.stats .st{background:#fff;padding:26px 18px;text-align:center}
.stats .n{font-size:clamp(24px,2.6vw,34px);font-weight:900;color:var(--navy2);letter-spacing:-.02em}
.stats .n .u{color:var(--teal)}
.stats .l{font-size:12.5px;color:var(--dim);margin-top:6px;line-height:1.35}
.bg-navy .stats{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.14)}
.bg-navy .stats .st{background:var(--navy2)}
.bg-navy .stats .n{color:#fff}.bg-navy .stats .n .u{color:var(--gold-lt)}
.bg-navy .stats .l{color:rgba(255,255,255,.72)}
@media(max-width:860px){.stats{grid-template-columns:repeat(2,1fr)}}

/* cards */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px;transition:.18s}
.card:hover{border-color:var(--line2);box-shadow:0 16px 40px rgba(6,30,56,.08);transform:translateY(-3px)}
.card .ic{width:46px;height:46px;border-radius:11px;background:var(--bg3);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.card h3{font-size:19px;margin-bottom:8px}
.card p{color:var(--dim);font-size:15px}
a.card{display:block;color:inherit}
a.card .more{margin-top:14px;font-size:13px;font-weight:800;letter-spacing:.04em;text-transform:uppercase;color:var(--teal)}
@media(max-width:900px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.g2,.g3,.g4{grid-template-columns:1fr}}

/* process steps */
.steps{counter-reset:step;display:grid;gap:18px;margin-top:8px}
.step{display:grid;grid-template-columns:64px 1fr;gap:20px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 24px}
.step .no{counter-increment:step;width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,var(--teal),var(--blue));color:#fff;font-weight:900;font-size:20px;display:flex;align-items:center;justify-content:center}
.step .no::before{content:counter(step,decimal-leading-zero)}
.step h3{font-size:18px;margin-bottom:5px}
.step p{color:var(--dim);font-size:15px}

/* split feature */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.split.rev .txt{order:2}
.split .im{border-radius:18px;overflow:hidden;border:1px solid var(--line);background:var(--bg3)}
.split .im img{width:100%;height:100%;object-fit:cover}
@media(max-width:820px){.split{grid-template-columns:1fr;gap:26px}.split.rev .txt{order:0}}

/* checklist */
.ticks{list-style:none;margin-top:18px;display:grid;gap:12px}
.ticks li{position:relative;padding-left:34px;color:var(--dim);font-size:15.5px}
.ticks li::before{content:"";position:absolute;left:0;top:2px;width:22px;height:22px;border-radius:50%;background:var(--bg3);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230d7f8d' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:center;background-size:14px}
.ticks li b{color:var(--navy2)}

/* pills / clients */
.pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.pill{background:#fff;border:1px solid var(--line);border-radius:999px;padding:9px 17px;font-size:14px;font-weight:600;color:var(--navy2)}
.logos{display:flex;flex-wrap:wrap;gap:14px 30px;align-items:center;justify-content:center;margin-top:10px}
.logos span{font-weight:800;color:var(--faint);font-size:16px;letter-spacing:.01em}

/* team */
.team-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.member{display:grid;grid-template-columns:132px 1fr;gap:22px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px}
.member img{width:132px;height:132px;border-radius:14px;object-fit:cover;border:1px solid var(--line)}
.member h3{font-size:19px}
.member .role{color:var(--teal);font-weight:700;font-size:14px;margin:3px 0 10px}
.member p{color:var(--dim);font-size:14.5px}
.member .more{display:inline-block;margin-top:12px;font-weight:800;font-size:13px;text-transform:uppercase;letter-spacing:.04em}
@media(max-width:820px){.team-grid{grid-template-columns:1fr}}
@media(max-width:460px){.member{grid-template-columns:1fr}.member img{width:110px;height:110px}}

/* prose (bio/deep pages) */
.prose{max-width:760px;margin:0 auto}
.prose p{color:var(--ink);font-size:16.5px;margin-bottom:16px;line-height:1.75}
.prose h2{font-size:24px;margin:36px 0 12px}
.prose h3{font-size:19px;margin:26px 0 8px}
.prose ul{margin:0 0 16px 22px}.prose li{margin-bottom:8px;color:var(--ink)}
.biohead{display:flex;gap:26px;align-items:center;margin-bottom:26px}
.biohead img{width:150px;height:150px;border-radius:16px;object-fit:cover;border:1px solid var(--line);flex:none}
.biohead .role{color:var(--teal);font-weight:700;margin-top:4px}
@media(max-width:560px){.biohead{flex-direction:column;align-items:flex-start;text-align:left}}

/* quote */
.quote{background:var(--bg2);border-left:4px solid var(--teal);border-radius:0 14px 14px 0;padding:26px 30px;font-size:clamp(18px,2vw,23px);font-weight:600;color:var(--navy2);line-height:1.4}
.quote .who{display:block;margin-top:14px;font-size:14px;font-weight:700;color:var(--dim)}

/* callout / cta band */
.cta{text-align:center}
.cta h2{font-size:clamp(26px,3.4vw,42px);max-width:20ch;margin:0 auto}
.cta p{margin:16px auto 0;max-width:60ch}
.cta .cta-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:28px}

/* form */
.formwrap{max-width:640px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:18px;padding:34px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:800;color:var(--navy2);margin-bottom:6px;letter-spacing:.01em}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1px solid var(--line2);border-radius:10px;font-family:inherit;font-size:15px;color:var(--ink);background:#ffff}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(40,167,178,.15)}
.field textarea{min-height:130px;resize:vertical}
.f2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:520px){.f2{grid-template-columns:1fr}}
.formnote{font-size:12.5px;color:var(--faint);margin-top:10px}
.formmsg{display:none;margin-top:16px;padding:14px 16px;border-radius:10px;font-size:14px;font-weight:600}
.formmsg.ok{display:block;background:#e6f6ee;color:#0a6b3b;border:1px solid #b6e6cc}
.formmsg.err{display:block;background:#fdecec;color:#b42318;border:1px solid #f5c2c0}

/* misc */
.krow{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}
.tag{background:var(--bg3);color:var(--navy2);border-radius:8px;padding:6px 12px;font-size:13px;font-weight:700}
.divider{height:1px;background:var(--line);margin:0}
.crumb{font-size:13px;color:var(--faint);margin-bottom:14px}
.crumb a{color:var(--faint);font-weight:600}
.paper{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 22px}
.paper .pic{width:44px;height:44px;border-radius:10px;background:var(--bg3);flex:none;display:flex;align-items:center;justify-content:center;font-size:20px}
.paper h3{font-size:16.5px;line-height:1.3}
.paper p{color:var(--dim);font-size:14px;margin-top:4px}
.videoframe{position:relative;padding-bottom:56.25%;height:0;border-radius:16px;overflow:hidden;border:1px solid var(--line);background:#000}
.videoframe iframe{position:absolute;inset:0;width:100%;height:100%}

/* footer */
footer{background:var(--navy);color:rgba(255,255,255,.72);padding:56px 0 30px}
footer .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:30px}
footer h4{color:#fff;font-size:13px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:14px}
footer a{display:block;color:rgba(255,255,255,.72);font-size:14px;margin-bottom:9px}
footer a:hover{color:var(--gold-lt)}
footer .fbrand img{height:40px;background:#fff;border-radius:8px;padding:6px 10px}
footer .tagline{font-size:14px;margin-top:14px;max-width:34ch;line-height:1.6}
footer .base{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);font-size:12.5px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
@media(max-width:820px){footer .cols{grid-template-columns:1fr 1fr}}
@media(max-width:520px){footer .cols{grid-template-columns:1fr}}

/* mobile nav */
@media(max-width:940px){
  .navtoggle{display:flex}
  .nav .links{position:absolute;top:70px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:#fff;border-bottom:1px solid var(--line);padding:8px 0 16px;box-shadow:0 20px 40px rgba(6,30,56,.1);display:none;z-index:70;max-height:calc(100vh - 70px);overflow-y:auto;-webkit-overflow-scrolling:touch}
  .nav .links.open{display:flex}
  .nav .links a{padding:13px 28px;font-size:16px;border-top:1px solid var(--line)}
  .nav .links .has:hover .drop{display:none}
  .nav .links .drop{position:static;padding:0;display:block}
  .nav .drop .inner{border:0;box-shadow:none;padding:0 0 0 16px;min-width:0}
  .nav .drop a{padding:10px 28px;font-size:14px;color:var(--dim)}
  .nav .links .btn{margin:14px 28px 0;padding:13px}
}