/* ============================================================
   CEA AI v2 - Image-rich reference platform prototype
   ============================================================ */

:root{
  --navy-900:#0A1B33;
  --navy-800:#0E2545;
  --navy-700:#143056;
  --navy-600:#1C3E6B;
  --gold:#C9A24B;
  --gold-soft:#E4C97E;
  --gold-deep:#A8842F;
  --ink:#10243F;
  --muted:#5B6B80;
  --paper:#F6F3EC;
  --paper-2:#EFEBE1;
  --white:#FFFFFF;
  --ai-cyan:#2DB6C4;
  --line:rgba(10,27,51,.12);
  --line-strong:rgba(10,27,51,.20);
  --shadow:0 18px 50px -22px rgba(10,27,51,.45);
  --shadow-sm:0 10px 30px -18px rgba(10,27,51,.4);
  --font-sans:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --font-serif:'Fraunces',Georgia,'Times New Roman',serif;
  --maxw:1280px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  font-size:17px;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px}

/* ---------- Typography ---------- */
h1,h2,h3{font-family:var(--font-serif);font-weight:600;line-height:1.08;color:var(--navy-900);letter-spacing:-.01em}
h1{font-size:clamp(2.6rem,6vw,4.6rem)}
h2{font-size:clamp(2rem,4vw,3.2rem)}
h3{font-size:1.32rem;line-height:1.2}
p{color:var(--muted)}
.lead{font-size:1.15rem;color:#43526a}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-sans);font-size:.74rem;font-weight:700;
  letter-spacing:.22em;text-transform:uppercase;color:var(--gold-deep);
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--gold)}
.eyebrow-light{color:var(--gold-soft)}
.eyebrow-light::before{background:var(--gold-soft)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-sans);font-weight:600;font-size:.95rem;
  padding:14px 28px;border-radius:2px;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease;
}
.btn-gold{background:var(--gold);color:var(--navy-900)}
.btn-gold:hover{background:var(--gold-soft);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.btn-ghost{border-color:rgba(255,255,255,.35);color:#fff;background:transparent}
.btn-ghost:hover{border-color:#fff;transform:translateY(-2px);background:rgba(255,255,255,.06)}
.btn-dark{border-color:var(--line-strong);color:var(--navy-900);background:transparent}
.btn-dark:hover{border-color:var(--navy-900);transform:translateY(-2px)}
.btn .arr{transition:transform .2s ease}
.btn:hover .arr{transform:translateX(4px)}

/* ---------- Header / Nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  background:linear-gradient(180deg,rgba(10,27,51,.78) 0%,rgba(10,27,51,.42) 70%,rgba(10,27,51,0) 100%);
  border-bottom:1px solid rgba(255,255,255,.1);
  transition:background .25s ease,border-color .25s ease;
}
.site-header.scrolled{background:rgba(10,27,51,.94);border-color:rgba(255,255,255,.08)}
.nav{display:flex;align-items:center;justify-content:space-between;height:78px}
.brand{display:flex;align-items:center;gap:10px;background:rgba(10,27,51,.55);padding:8px 14px;border-radius:10px;border:1px solid rgba(255,255,255,.12);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.brand img{height:56px;display:block;filter:drop-shadow(0 2px 8px rgba(0,0,0,.55))}
.nav-links{display:flex;gap:34px;align-items:center}
.nav-links a{font-size:.9rem;font-weight:600;color:rgba(255,255,255,.86);transition:color .2s}
.nav-links a:hover{color:var(--gold-soft)}
.nav-cta{display:flex;gap:14px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer}
.nav-toggle span{width:24px;height:2px;background:#fff}

/* ---------- Hero v2 ---------- */
.hero-v2{
  position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;
  background-color:var(--navy-900);background-size:cover;background-position:center;
  color:#fff;text-align:center;overflow:hidden;
  box-shadow:inset 0 0 0 2000px rgba(10,27,51,.48);
}
.hero-v2::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,27,51,.88) 0%,rgba(10,27,51,.62) 40%,rgba(10,27,51,.78) 70%,rgba(10,27,51,.92) 100%);
}
.hero-v2::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(ellipse at center,rgba(10,27,51,.55) 0%,rgba(10,27,51,.82) 70%);
  pointer-events:none;
}
.hero-v2 .container{position:relative;z-index:2;max-width:960px;padding-top:90px;padding-bottom:90px}
.hero-v2 h1{color:#fff;margin:22px 0 26px}
.hero-v2 h1 .accent{color:var(--gold-soft)}
.hero-v2 .lead{color:rgba(255,255,255,.82);font-size:1.2rem;max-width:760px;margin:0 auto 36px}
.hero-v2 .hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:48px}
.hero-v2 .hero-stats{display:flex;justify-content:center;gap:60px;flex-wrap:wrap}
.hero-v2 .hero-stats .num{font-family:var(--font-serif);font-size:2.8rem;font-weight:600;color:var(--gold-soft);line-height:1}
.hero-v2 .hero-stats .lbl{font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.7);margin-top:8px}
.scroll-hint{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);z-index:2;color:rgba(255,255,255,.55);font-size:.75rem;letter-spacing:.12em;text-transform:uppercase;animation:bounce 2.5s infinite}
.scroll-hint::after{content:"↓";display:block;text-align:center;margin-top:4px;font-size:1rem}
@keyframes bounce{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(8px)}}

/* ---------- Sections ---------- */
.section{padding:110px 0}
.section.alt{background:var(--white)}
.section.dark{background:var(--navy-900);color:#fff}
.section.dark h2,.section.dark h3{color:#fff}
.section.dark p{color:rgba(255,255,255,.72)}
.section-head{max-width:780px;margin-bottom:54px}
.section-head h2{margin:16px 0 18px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- Image section (full-bleed bg) ---------- */
.section-img{
  position:relative;background-size:cover;background-position:center;
  padding:140px 0;color:#fff;
}
.section-img::before{content:"";position:absolute;inset:0;background:rgba(10,27,51,.78)}
.section-img .container{position:relative;z-index:2}
.section-img h2,.section-img h3{color:#fff}
.section-img p{color:rgba(255,255,255,.78)}

/* ---------- Grids ---------- */
.grid{display:grid;gap:26px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-6{grid-template-columns:repeat(6,1fr)}

/* ---------- Cards ---------- */
.card{background:var(--white);border:1px solid var(--line);border-radius:4px;overflow:hidden;transition:transform .22s ease,box-shadow .22s ease;display:flex;flex-direction:column}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--navy-800)}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.card:hover .thumb img{transform:scale(1.04)}
.card .body{padding:26px 26px 18px;flex:1}
.card .tag{font-size:.68rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase;color:var(--gold-deep)}
.card h3{margin:10px 0 10px}
.card p{font-size:.95rem}
.card-link{display:block;padding:18px 26px;font-weight:700;color:var(--navy-900);border-top:1px solid var(--line);transition:color .2s}
.card-link:hover{color:var(--gold-deep)}
.card-link .arr{transition:transform .2s}
.card-link:hover .arr{transform:translateX(4px)}

/* ---------- Image cards ---------- */
.img-card{
  position:relative;border-radius:4px;overflow:hidden;min-height:340px;
  display:flex;flex-direction:column;justify-content:flex-end;padding:28px;
  background-size:cover;background-position:center;
}
.img-card::before{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(10,27,51,.92) 0%,rgba(10,27,51,.2) 60%,rgba(10,27,51,.1) 100%);transition:opacity .3s}
.img-card:hover::before{opacity:.86}
.img-card>*{position:relative;z-index:2}
.img-card h3{color:#fff;font-size:1.25rem;margin-bottom:8px}
.img-card p{color:rgba(255,255,255,.78);font-size:.92rem}
.img-card .icon{position:absolute;top:22px;left:22px;width:48px;height:48px;stroke:#fff}

/* ---------- Split with image ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split-img{border-radius:4px;overflow:hidden;box-shadow:var(--shadow)}
.split-img img{width:100%;height:auto;display:block}

/* ---------- Corridors ---------- */
.corridor-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:44px}
.corridor-card{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:4px;
  padding:26px 22px;text-align:center;transition:background .2s,border-color .2s,transform .2s
}
.corridor-card:hover{background:rgba(255,255,255,.14);border-color:var(--gold-soft);transform:translateY(-4px)}
.corridor-card .route{font-family:var(--font-serif);font-size:1.15rem;color:#fff;font-weight:600;margin-bottom:8px}
.corridor-card .meta{font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--gold-soft)}

/* ---------- Stats band ---------- */
.stats-band{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}
.stat .num{font-family:var(--font-serif);font-size:3.4rem;font-weight:600;color:var(--gold-soft);line-height:1}
.stat .lbl{font-size:.84rem;letter-spacing:.12em;text-transform:uppercase;color:rgba(255,255,255,.7);margin-top:10px}

/* ---------- Gallery masonry ---------- */
.gallery-masonry{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.gallery-item{
  position:relative;border-radius:4px;overflow:hidden;aspect-ratio:4/3;background:var(--navy-800)
}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.gallery-item:hover img{transform:scale(1.05)}
.gallery-item.wide{grid-column:span 2}
.gallery-item.tall{grid-row:span 2}
.gallery-item .cap{position:absolute;inset:auto 0 0 0;padding:22px;background:linear-gradient(0deg,rgba(10,27,51,.92),transparent);color:#fff;opacity:0;transition:opacity .25s}
.gallery-item:hover .cap{opacity:1}
.gallery-item .cap .t{font-family:var(--font-serif);font-size:1.1rem;font-weight:600}
.gallery-item .cap .s{font-size:.78rem;color:var(--gold-soft);letter-spacing:.08em;text-transform:uppercase}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;counter-reset:step}
.step{position:relative;padding:34px 28px;background:var(--white);border:1px solid var(--line);border-radius:4px}
.step .n{font-family:var(--font-serif);font-size:3.2rem;font-weight:600;color:var(--gold);line-height:1;opacity:.35;margin-bottom:12px}
.step h3{margin-bottom:10px}

/* ---------- CTA ---------- */
.cta{
  position:relative;border-radius:4px;overflow:hidden;
  display:grid;grid-template-columns:1.2fr .8fr;gap:50px;align-items:center;
  padding:80px 70px;color:#fff;background-size:cover;background-position:center;
}
.cta::before{content:"";position:absolute;inset:0;background:rgba(10,27,51,.82)}
.cta>*{position:relative;z-index:2}
.cta h2{color:#fff;margin-bottom:16px}
.cta p{color:rgba(255,255,255,.78);font-size:1.05rem}
.cta .actions{display:flex;justify-content:flex-end}

/* ---------- Footer ---------- */
.footer{background:var(--navy-900);color:rgba(255,255,255,.65);padding:80px 0 32px}
.footer a{color:rgba(255,255,255,.65);display:block;margin-bottom:10px;transition:color .2s}
.footer a:hover{color:var(--gold-soft)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:60px}
.footer h4{color:#fff;font-family:var(--font-sans);font-size:.82rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:20px}
.footer .about{max-width:340px;margin-top:18px;line-height:1.7}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;border-top:1px solid rgba(255,255,255,.1);padding-top:24px;font-size:.82rem}

/* ---------- CEA Intelligence ---------- */
.intel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.intel-card{background:var(--white);border:1px solid var(--line);border-radius:4px;padding:30px 28px;transition:transform .22s ease,box-shadow .22s ease}
.intel-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.intel-card .ic{width:46px;height:46px;margin-bottom:18px;color:var(--gold-deep)}
.intel-card h3{font-size:1.18rem;margin-bottom:10px}
.intel-card p{font-size:.94rem}
.intel-note{margin-top:34px;padding:24px 30px;border-left:3px solid var(--gold);background:var(--paper-2);border-radius:0 4px 4px 0;font-size:1.02rem;color:#43526a}
.intel-note b{color:var(--navy-900)}
.profiles-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:42px}
.profile-card{background:var(--paper);border:1px solid var(--line);border-radius:4px;padding:22px 24px;transition:border-color .2s,transform .2s}
.profile-card:hover{border-color:var(--gold);transform:translateY(-3px)}
.profile-card .tag{font-size:.66rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--gold-deep);display:block;margin-bottom:8px}
.profile-card h4{font-family:var(--font-serif);font-size:1.12rem;font-weight:600;color:var(--navy-900);margin-bottom:6px}
.profile-card p{font-size:.9rem;line-height:1.5}
.intel-why{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:42px;text-align:center}
.intel-why .num{font-family:var(--font-serif);font-size:3rem;font-weight:600;color:var(--gold);line-height:1}
.intel-why .lbl{font-size:.9rem;margin-top:10px;color:#43526a}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-6{grid-template-columns:repeat(3,1fr)}
  .intel-grid{grid-template-columns:repeat(2,1fr)}
  .profiles-grid{grid-template-columns:1fr 1fr}
  .corridor-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:44px}
  .cta{grid-template-columns:1fr;padding:54px 36px}
  .cta .actions{justify-content:flex-start;margin-top:24px}
}
@media (max-width:760px){
  .nav-links{display:none}
  .nav-cta .btn{display:none}
  .nav-toggle{display:flex}
  .grid-2,.grid-3,.grid-4,.grid-6{grid-template-columns:1fr}
  .corridor-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .stats-band{grid-template-columns:1fr 1fr;gap:28px}
  .gallery-masonry{grid-template-columns:1fr 1fr}
  .gallery-item.wide{grid-column:span 2}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .hero-v2 .hero-stats{gap:28px}
  .section{padding:80px 0}
}