/* =========================================================
   Clark Innovation — shared styles
   Soft blue & white, minimal, lots of white space
   ========================================================= */

:root{
  /* color */
  --bg:#ffffff;
  --bg-soft:#f5f8fd;
  --bg-blue:#eaf1fb;
  --ink:#16233f;        /* deep navy — headings */
  --ink-2:#2d3c57;
  --body:#566077;       /* muted body text */
  --muted:#8b94a7;
  --line:#e2eaf5;
  --brand:#3a6fd0;      /* primary soft blue */
  --brand-deep:#2a539e;
  --brand-soft:#7aa2e6;
  --brand-tint:#dbe8fb;

  --maxw:1160px;
  --r:16px;
  --r-lg:22px;
  --shadow:0 1px 2px rgba(22,35,63,.04), 0 18px 44px rgba(42,83,158,.08);
  --shadow-sm:0 1px 2px rgba(22,35,63,.05), 0 8px 22px rgba(42,83,158,.06);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  color:var(--body);
  background:var(--bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

h1,h2,h3,h4{color:var(--ink);letter-spacing:-.02em;line-height:1.12;font-weight:700}

.eyebrow{
  font-size:12px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--brand);font-weight:700;margin-bottom:16px;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 28px;border-radius:999px;font-weight:600;font-size:15px;
  background:var(--brand);color:#fff;border:1px solid var(--brand);
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease;
  box-shadow:0 8px 20px rgba(58,111,208,.22);cursor:pointer;
}
.btn:hover{transform:translateY(-2px);background:var(--brand-deep);box-shadow:0 12px 26px rgba(42,83,158,.28)}
.btn.ghost{
  background:#fff;color:var(--brand-deep);border:1px solid var(--brand-tint);box-shadow:none;
}
.btn.ghost:hover{background:var(--bg-blue);border-color:var(--brand-soft);transform:translateY(-2px)}

/* ---------- Top banner ---------- */
.topbar{
  background:var(--brand-deep);color:#fff;text-align:center;
  font-size:13px;letter-spacing:.06em;font-weight:500;padding:10px 16px;
}
.topbar span{opacity:.95}
@media(max-width:600px){.topbar{font-size:11.5px;letter-spacing:.03em}}

/* ---------- Logo ---------- */
.logo{display:flex;align-items:center;gap:9px}
.logo svg.mark{width:32px;height:32px;flex:0 0 auto}
.logo .word{display:flex;gap:.34em;font-weight:700;letter-spacing:.04em;font-size:18px;color:var(--ink)}
.logo .word .light{font-weight:300;color:var(--brand)}

/* ---------- Nav ---------- */
header.nav{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;transition:border-color .3s ease, box-shadow .3s ease;
}
header.nav.scrolled{border-color:var(--line);box-shadow:0 1px 0 rgba(42,83,158,.04)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:74px}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{font-size:15px;color:var(--ink-2);font-weight:500;transition:color .2s;position:relative}
.nav-links a:hover{color:var(--brand)}
.nav-links a.active{color:var(--brand)}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-22px;height:2px;background:var(--brand);border-radius:2px;
}
.nav-cta{display:flex;align-items:center;gap:16px}
.menu-btn{display:none;background:none;border:0;cursor:pointer;width:40px;height:40px}
.menu-btn span{display:block;height:2px;width:22px;background:var(--ink);margin:5px auto;transition:.3s}

/* ---------- Hero ---------- */
.hero{padding:104px 0 88px;position:relative;overflow:hidden;background:
  radial-gradient(120% 90% at 85% 0%, var(--bg-blue) 0%, #fff 60%);}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.hero h1{font-size:clamp(42px,6vw,70px);color:var(--ink)}
.hero h1 .accent{color:var(--brand)}
.hero p.lead{font-size:clamp(17px,2vw,20px);color:var(--body);margin:24px 0 36px;max-width:540px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-logo-stage{
  aspect-ratio:1/1;border-radius:24px;
  background:radial-gradient(120% 120% at 30% 20%, #fff 0%, var(--bg-soft) 55%, var(--bg-blue) 100%);
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow);position:relative;
}
.hero-logo-stage .logo .word{flex-direction:column;align-items:flex-start;gap:.1em;font-size:clamp(20px,3.4vw,34px);line-height:1.05;text-align:left}
.hero-logo-stage .logo .word .light{letter-spacing:.02em}
.hero-logo-stage .logo svg.mark{width:clamp(54px,8vw,76px);height:clamp(54px,8vw,76px)}
.hero-logo-stage .logo{flex-direction:row;align-items:center;justify-content:center;gap:clamp(12px,1.6vw,18px)}
.dotgrid{position:absolute;inset:0;background-image:radial-gradient(var(--brand-tint) 1px,transparent 1px);
  background-size:22px 22px;opacity:.7;border-radius:24px;
  mask:radial-gradient(70% 70% at 50% 50%,#000,transparent)}

.trust{margin-top:68px;border-top:1px solid var(--line);padding-top:32px}
.trust p{font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);text-align:center;margin-bottom:20px}
.trust-row{display:flex;flex-wrap:wrap;gap:36px;justify-content:center;align-items:center;
  font-weight:600;color:var(--ink-2);letter-spacing:.03em}
.trust-row span{color:var(--ink-2);opacity:.78}

/* ---------- Sections ---------- */
section{padding:100px 0}
.section-head{max-width:680px;margin-bottom:56px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:clamp(30px,4.4vw,46px)}
.section-head p{color:var(--body);font-size:18px;margin-top:16px}

.soft{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.blue-band{background:var(--bg-blue)}

/* ---------- Feature columns (3-col) ---------- */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.feature{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:34px 30px;
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.feature:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--brand-tint)}
.feature .ic{
  width:50px;height:50px;border-radius:14px;background:var(--bg-blue);
  display:flex;align-items:center;justify-content:center;margin-bottom:22px;
}
.feature .ic svg{width:24px;height:24px;stroke:var(--brand);fill:none;stroke-width:1.7}
.feature .wn{font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--brand-soft)}
.feature h3{font-size:21px;margin:10px 0 10px}
.feature p{color:var(--body);font-size:15px}

/* ---------- Service cards ---------- */
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:34px 30px;
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--brand-tint)}
.card .ic{width:48px;height:48px;border-radius:13px;background:var(--brand);
  display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.card .ic svg{width:22px;height:22px;stroke:#fff;fill:none;stroke-width:1.6}
.card h3{font-size:20px;margin-bottom:10px}
.card p{color:var(--body);font-size:15px}
.card ul{list-style:none;margin-top:16px;display:flex;flex-direction:column;gap:9px}
.card ul li{position:relative;padding-left:22px;font-size:14px;color:var(--ink-2)}
.card ul li::before{content:"";position:absolute;left:0;top:7px;width:8px;height:8px;border-radius:50%;background:var(--brand-soft)}

/* ---------- Approach / stats ---------- */
.approach-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.stat .n{font-size:clamp(34px,5vw,52px);font-weight:700;letter-spacing:-.03em;color:var(--brand)}
.stat .l{color:var(--body);font-size:14px;margin-top:4px}
.steps{list-style:none;display:flex;flex-direction:column;gap:24px}
.steps li{display:flex;gap:18px;align-items:flex-start}
.steps .num{flex:0 0 auto;width:36px;height:36px;border-radius:50%;background:var(--bg-blue);color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
.steps h4{font-size:17px;color:var(--ink)}
.steps p{color:var(--body);font-size:15px}

/* ---------- Founders ---------- */
.founders{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.founder{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  transition:transform .25s ease, box-shadow .25s ease;
}
.founder:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.founder .photo{position:relative;aspect-ratio:4/5;background:var(--bg-blue);overflow:hidden}
.founder .photo img{width:100%;height:100%;object-fit:cover;object-position:center top}
.founder .body{padding:28px 30px 32px}
.founder .role{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--brand);font-weight:700}
.founder h3{font-size:24px;margin:8px 0 12px}
.founder p{color:var(--body);font-size:15px}
.founder .contact{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.founder .contact a{display:flex;gap:11px;align-items:center;color:var(--ink-2);font-size:15px;transition:color .2s}
.founder .contact a:hover{color:var(--brand)}
.founder .contact svg{width:18px;height:18px;stroke:var(--brand);fill:none;stroke-width:1.7;flex:0 0 auto}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto}
.faq-list details{border-bottom:1px solid var(--line);padding:22px 4px}
.faq-list summary{display:flex;justify-content:space-between;align-items:center;cursor:pointer;list-style:none;
  font-weight:600;font-size:clamp(16px,2.2vw,19px);gap:20px;color:var(--ink)}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary .pl{flex:0 0 auto;width:22px;height:22px;position:relative}
.faq-list summary .pl::before,.faq-list summary .pl::after{content:"";position:absolute;background:var(--brand);left:50%;top:50%;transform:translate(-50%,-50%)}
.faq-list summary .pl::before{width:13px;height:2px}
.faq-list summary .pl::after{width:2px;height:13px;transition:transform .25s ease}
.faq-list details[open] summary .pl::after{transform:translate(-50%,-50%) scaleY(0)}
.faq-list p.ans{color:var(--body);font-size:15px;margin-top:14px;max-width:780px}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.contact-grid h2{font-size:clamp(30px,4.4vw,46px)}
.contact-grid p.sub{color:var(--body);font-size:18px;margin-top:16px;max-width:430px}
.contact-meta{margin-top:32px;display:flex;flex-direction:column;gap:14px}
.contact-meta a,.contact-meta span{display:flex;gap:12px;align-items:center;color:var(--ink-2);font-size:15px}
.contact-meta svg{stroke:var(--brand)}
form.card-form{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:34px;box-shadow:var(--shadow-sm)}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:7px;color:var(--ink-2)}
.field input,.field textarea{
  width:100%;padding:13px 15px;border:1px solid var(--line);border-radius:12px;
  font:inherit;font-size:15px;background:var(--bg-soft);color:var(--ink);
  transition:border-color .2s, box-shadow .2s, background .2s;
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(58,111,208,.12)}
.field textarea{resize:vertical;min-height:120px}
form.card-form .btn{width:100%;justify-content:center}
.form-note{font-size:13px;color:var(--muted);margin-top:14px;text-align:center}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(135deg,var(--brand-deep),var(--brand));color:#fff;border-radius:var(--r-lg);
  padding:56px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:clamp(26px,3.4vw,38px)}
.cta-band p{color:rgba(255,255,255,.88);margin-top:10px;max-width:520px}
.cta-band .btn{background:#fff;color:var(--brand-deep);border-color:#fff;box-shadow:0 10px 24px rgba(0,0,0,.16)}
.cta-band .btn:hover{background:var(--bg-blue);color:var(--brand-deep)}

/* ---------- Footer (with email signup) ---------- */
footer{background:var(--bg-soft);border-top:1px solid var(--line);padding:64px 0 36px}
.foot-top{display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:start;margin-bottom:44px}
.foot-signup h3{font-size:22px;margin-bottom:8px}
.foot-signup p{font-size:15px;color:var(--body);margin-bottom:18px;max-width:380px}
.signup-row{display:flex;gap:10px;flex-wrap:wrap}
.signup-row input{
  flex:1;min-width:200px;padding:13px 16px;border:1px solid var(--line);border-radius:999px;
  font:inherit;font-size:15px;background:#fff;color:var(--ink);transition:border-color .2s, box-shadow .2s;
}
.signup-row input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(58,111,208,.12)}
.foot-cols{display:flex;gap:64px;flex-wrap:wrap;justify-content:flex-end}
.foot-col h4{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:14px;font-weight:700}
.foot-col a{display:block;font-size:15px;color:var(--ink-2);margin-bottom:10px;transition:color .2s}
.foot-col a:hover{color:var(--brand)}
.foot-bottom{border-top:1px solid var(--line);padding-top:26px;display:flex;justify-content:space-between;
  align-items:center;gap:24px;flex-wrap:wrap}
.copy{font-size:13px;color:var(--muted)}
.foot-mini-links{display:flex;gap:24px;font-size:14px;color:var(--muted)}
.foot-mini-links a:hover{color:var(--brand)}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease, transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- Page header (interior pages) ---------- */
.page-head{padding:84px 0 56px;background:radial-gradient(120% 90% at 80% 0%, var(--bg-blue) 0%, #fff 65%)}
.page-head .eyebrow{margin-bottom:14px}
.page-head h1{font-size:clamp(36px,5vw,58px);color:var(--ink)}
.page-head p{color:var(--body);font-size:19px;margin-top:18px;max-width:620px}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .hero-grid,.approach-grid,.contact-grid,.founders,.foot-top{grid-template-columns:1fr}
  .features{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr}
  .hero{padding:64px 0 48px}
  .hero-logo-stage{order:-1;max-width:420px;margin:0 auto 8px}
  .foot-cols{justify-content:flex-start;gap:48px}
  .nav-links{
    position:fixed;inset:74px 0 auto 0;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;gap:0;padding:8px 0;transform:translateY(-130%);transition:transform .35s ease;
  }
  .nav-links.open{transform:none}
  .nav-links a{padding:14px 24px;width:100%}
  .nav-links a.active::after{display:none}
  .menu-btn{display:block}
  .nav-cta .btn{display:none}
  section{padding:68px 0}
  .cta-band{padding:40px 30px}
}

/* Logo lockup — tighten + size down on phones so it doesn't feel crowded */
@media(max-width:600px){
  .logo{gap:8px}
  .logo svg.mark{width:27px;height:27px}
  .logo .word{font-size:15.5px;gap:.28em;letter-spacing:.03em}
  .hero-logo-stage{max-width:340px}
  .hero-logo-stage .logo{gap:9px}
  .hero-logo-stage .logo svg.mark{width:46px;height:46px}
  .hero-logo-stage .logo .word{font-size:20px}
  footer .logo .word{font-size:14.5px}
}

/* ---- Single founder layout ---- */
.founders.solo{grid-template-columns:.9fr 1.1fr;max-width:980px;margin:0 auto;align-items:start}
.founders.solo .founder .photo{aspect-ratio:4/5;height:auto;min-height:0}
.founders.solo .founder .photo img{object-position:center 22%}
@media(max-width:900px){
  .founders.solo{grid-template-columns:1fr}
  .founders.solo .founder .photo{aspect-ratio:4/5;min-height:0}
}

/* ---- Sponsor ad (corner) ---- */
.ad-banner{
  position:fixed;right:20px;bottom:20px;z-index:80;
  display:flex;align-items:center;gap:12px;
  max-width:300px;padding:12px 14px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow);
  transform:translateY(8px);opacity:0;
  animation:adIn .5s ease .8s forwards;
}
@keyframes adIn{to{transform:translateY(0);opacity:1}}
.ad-banner a.ad-link{display:flex;align-items:center;gap:11px;flex:1;min-width:0}
.ad-banner .ad-logo{
  width:38px;height:38px;flex:none;border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  background:#107c10;
}
.ad-banner .ad-logo svg{width:24px;height:24px}
.ad-banner .ad-copy{min-width:0}
.ad-banner .ad-label{
  font-size:10px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);font-weight:700;margin-bottom:1px;
}
.ad-banner .ad-title{font-size:13.5px;font-weight:700;color:var(--ink);line-height:1.25}
.ad-banner .ad-sub{font-size:11.5px;color:var(--body);line-height:1.3}
.ad-banner .ad-close{
  position:absolute;top:-9px;right:-9px;
  width:22px;height:22px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--muted);
  font-size:13px;line-height:1;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-sm);transition:color .2s ease,border-color .2s ease;
}
.ad-banner .ad-close:hover{color:var(--ink);border-color:var(--brand-soft)}
.ad-banner.hide{display:none}
@media(max-width:560px){
  .ad-banner{right:12px;bottom:12px;max-width:240px;padding:10px 12px}
  .ad-banner .ad-sub{display:none}
}