/* ArCiT — shared design system
   Palette sampled from the ArCiT deck: navy · white · light-grey · bright ArCiT blue */
:root{
  --navy:#0c1e33;
  --navy-2:#0a1a2c;
  --navy-3:#071322;
  --panel:#112a41;
  --panel-2:#16324c;
  --blue:#2e9ce6;
  --blue-soft:#63b6ee;
  --blue-deep:#1c85cf;
  --white:#f6f9fc;
  --grey:#b3bfcc;      /* body text — ~8:1 on navy */
  --grey-2:#9aa8b7;
  --grey-dim:#7286998f;
  --grey-muted:#7f93a7;/* WCAG-AA on navy for small text (5.3:1) */
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.20);
  --maxw:1160px;
  --measure:730px;
  --r:10px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;background:var(--navy);color:var(--grey);
  font-family:'Inter',-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{margin:0;color:var(--white);font-weight:700;letter-spacing:-.025em;line-height:1.12;}
p{margin:0;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
::selection{background:rgba(46,156,230,.3);color:#fff;}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:4px;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px;}
.measure{max-width:var(--measure);}
.accent{color:var(--blue);}
.skip{position:absolute;left:-9999px;top:0;background:var(--blue);color:#04263c;padding:10px 16px;border-radius:6px;z-index:200;font-weight:600;}
.skip:focus{left:16px;top:12px;}

/* Kicker / eyebrow */
.kicker{display:inline-flex;align-items:center;gap:12px;font-size:.86rem;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--blue);}
.kicker::before{content:"";width:28px;height:2px;background:var(--blue);display:inline-block;}
/* Heroes state the category loudly so it is not lost under the headline */
.hero .kicker,.page-hero .kicker{font-size:1.02rem;letter-spacing:.13em;margin-bottom:4px;}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:.97rem;padding:14px 26px;border-radius:8px;cursor:pointer;border:1px solid transparent;transition:transform .16s var(--ease),background .16s,color .16s,border-color .16s;}
.btn-primary{background:var(--blue);color:#04263c;}
.btn-primary:hover{background:var(--blue-soft);transform:translateY(-2px);}
.btn-line{background:transparent;color:var(--white);border-color:var(--line-strong);}
.btn-line:hover{border-color:var(--white);transform:translateY(-2px);}
.btn-lg{padding:16px 32px;font-size:1.03rem;}
.textlink{color:var(--white);font-weight:600;display:inline-flex;align-items:center;gap:8px;transition:gap .16s,color .16s;}
.textlink:hover{color:var(--blue);gap:12px;}

/* Header */
.site-header{position:fixed;top:0;left:0;right:0;z-index:80;border-bottom:1px solid transparent;transition:background .3s,border-color .3s;}
.site-header.scrolled{background:rgba(7,17,28,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:88px;}
.brand{display:flex;align-items:center;}
.brand img{height:46px;width:auto;display:block;}
.nav{display:flex;align-items:center;gap:34px;}
.nav a.navlink{font-size:.93rem;font-weight:500;color:rgba(255,255,255,.74);transition:color .15s;position:relative;}
.nav a.navlink:hover,.nav a.navlink[aria-current="page"]{color:#fff;}
.nav a.navlink[aria-current="page"]::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--blue);border-radius:2px;}
.nav .btn{padding:10px 20px;font-size:.9rem;}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:9px;}
.nav-toggle span{display:block;width:24px;height:2px;background:#fff;margin:5px 0;border-radius:2px;transition:transform .2s,opacity .2s;}

/* Sections */
.band{padding:112px 0;}
.band.tight{padding:88px 0;}
.band-line{border-top:1px solid var(--line);}
.section-alt{background:var(--navy-2);}
.lede h2{font-size:clamp(1.8rem,3.4vw,2.7rem);letter-spacing:-.03em;}
.lede .kicker{margin-bottom:20px;}
.lede .sub{margin-top:18px;font-size:1.1rem;color:var(--grey);max-width:var(--measure);}
.closing{margin-top:44px;font-size:1.15rem;color:var(--white);font-weight:500;letter-spacing:-.01em;}
.closing .accent{color:var(--blue);}

/* Hero */
.hero{position:relative;overflow:hidden;padding:150px 0 90px;}
.hero::before{content:"";position:absolute;top:-25%;right:-12%;width:820px;height:820px;border-radius:50%;background:radial-gradient(circle,rgba(46,156,230,.15),transparent 60%);pointer-events:none;}
.hero-inner{position:relative;z-index:2;max-width:900px;}
.hero h1{font-size:clamp(2.5rem,6vw,4.6rem);margin:24px 0 0;letter-spacing:-.035em;}
.hero-statement{margin-top:26px;font-size:clamp(1.25rem,2.2vw,1.62rem);color:var(--white);font-weight:500;letter-spacing:-.012em;line-height:1.42;max-width:760px;}
.hero .lead{margin-top:18px;font-size:clamp(1.02rem,1.5vw,1.12rem);color:var(--grey);max-width:660px;font-weight:400;line-height:1.6;}
/* Mission section */
.mission-body p{color:var(--grey);font-size:1.12rem;line-height:1.65;}
.mission-emphasis{margin-top:22px;color:var(--white);font-weight:500;font-size:1.16rem;border-left:2px solid var(--blue);padding-left:20px;}
.hero-provides{margin-top:26px;}
.hero-provides .hp-label{display:block;color:var(--blue);font-weight:700;font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;margin-bottom:13px;}
.hero-provides .hp-items{display:flex;flex-wrap:wrap;gap:10px;}
.hero-provides .hp-items span{display:inline-flex;align-items:center;gap:9px;font-size:.92rem;color:var(--grey);border:1px solid var(--line-strong);border-radius:999px;padding:9px 15px;background:rgba(255,255,255,.02);}
.hero-provides .hp-items svg{width:16px;height:16px;color:var(--blue);flex:0 0 auto;}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:15px;align-items:center;}
.page-hero{padding:170px 0 70px;position:relative;overflow:hidden;}
.page-hero::before{content:"";position:absolute;top:-30%;right:-10%;width:640px;height:640px;border-radius:50%;background:radial-gradient(circle,rgba(46,156,230,.12),transparent 62%);pointer-events:none;}
.page-hero .inner{position:relative;z-index:2;max-width:820px;}
.page-hero h1{font-size:clamp(2.2rem,5vw,3.6rem);margin-top:22px;letter-spacing:-.03em;}
.page-hero p{margin-top:22px;font-size:1.15rem;color:var(--grey);max-width:660px;}

/* Journey / flow diagram (abstract line visual) */
.journey{margin-top:70px;position:relative;}
.journey-track{display:grid;grid-template-columns:repeat(3,1fr);gap:0;position:relative;}
.journey-track.four{grid-template-columns:repeat(4,1fr);}
.jnode{position:relative;padding:0 22px;}
.jnode::before{content:"";position:absolute;top:9px;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--line-strong),var(--line-strong));z-index:0;}
.jnode:first-child::before{left:50%;}
.jnode:last-child::before{right:50%;}
.jdot{position:relative;z-index:1;width:20px;height:20px;border-radius:50%;background:var(--navy);border:2px solid var(--blue);display:grid;place-items:center;}
.jdot::after{content:"";width:7px;height:7px;border-radius:50%;background:var(--blue);}
.jnode.soft .jdot{border-color:var(--line-strong);}
.jnode.soft .jdot::after{background:var(--grey-muted);}
.jnode h3{font-size:1.12rem;margin:22px 0 10px;}
.jnode .jn{font-size:.78rem;font-weight:700;letter-spacing:.1em;color:var(--blue);}
.jnode p{font-size:.95rem;color:var(--grey);}

/* Questions list */
.qgrid{margin-top:52px;display:grid;grid-template-columns:1fr 1fr;gap:0 56px;}
.qitem{display:flex;gap:16px;padding:20px 0;border-top:1px solid var(--line);color:var(--white);font-weight:500;font-size:1.05rem;align-items:baseline;}
.qitem .qn{color:var(--blue);font-size:.85rem;font-weight:700;min-width:26px;}

/* Capability rows (editorial list) */
.caplist{margin-top:56px;border-top:1px solid var(--line);}
.caprow{display:grid;grid-template-columns:1.1fr 1.25fr auto;gap:28px;align-items:center;padding:30px 10px;border-bottom:1px solid var(--line);transition:background .2s,padding-left .2s;}
.caprow:hover{background:rgba(255,255,255,.02);padding-left:18px;}
.caprow .ct{display:flex;align-items:center;gap:16px;}
.caprow .ic{width:30px;height:30px;flex:0 0 auto;color:var(--blue);}
.caprow h3{font-size:1.25rem;letter-spacing:-.02em;}
.caprow p{font-size:.98rem;color:var(--grey);}
.caprow .arrow{color:var(--grey-muted);transition:transform .2s,color .2s;}
.caprow:hover .arrow{color:var(--blue);transform:translateX(4px);}
@media(max-width:820px){
  .caprow{grid-template-columns:1fr;gap:8px;}
  .caprow .arrow{display:none;}
}

/* Value examples — light list with icons */
.vgrid{margin-top:52px;display:grid;grid-template-columns:repeat(2,1fr);gap:2px 56px;}
.vitem{display:flex;gap:16px;padding:22px 0;border-top:1px solid var(--line);}
.vitem .ic{width:26px;height:26px;flex:0 0 auto;color:var(--blue);margin-top:2px;}
.vitem h3{font-size:1.05rem;margin-bottom:3px;}
.vitem p{font-size:.95rem;color:var(--grey);}

/* Engagement stages — numbered vertical */
.stages{margin-top:52px;display:grid;gap:0;}
.stage{display:grid;grid-template-columns:64px 1fr;gap:26px;padding:30px 0;border-top:1px solid var(--line);}
.stage:last-child{border-bottom:1px solid var(--line);}
.stage .sn{font-size:1.35rem;font-weight:700;color:var(--blue);letter-spacing:-.02em;}
.stage h3{font-size:1.2rem;margin-bottom:8px;}
.stage p{font-size:1rem;color:var(--grey);max-width:640px;}
.session-meta{display:inline-flex;align-items:center;gap:9px;font-size:.9rem;color:var(--blue);font-weight:600;}
.session-meta svg{width:16px;height:16px;flex:0 0 auto;}
.stage.embedded{background:linear-gradient(90deg,rgba(46,156,230,.08),transparent);border-radius:var(--r);padding:30px 24px;border:1px solid rgba(46,156,230,.28);margin-top:14px;}
.stage.embedded .sn{color:var(--blue-soft);}

/* Differentiators */
.diffs{margin-top:56px;display:grid;grid-template-columns:repeat(3,1fr);gap:44px;}
.diff .dn{width:44px;height:44px;border-radius:11px;background:rgba(46,156,230,.12);border:1px solid rgba(46,156,230,.3);display:grid;place-items:center;color:var(--blue);margin-bottom:20px;}
.diff h3{font-size:1.22rem;margin-bottom:11px;}
.diff p{font-size:1rem;color:var(--grey);}

/* Panels / cards (selective) */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:32px;}
.deliverables{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:26px 30px;}
.deliverables h4{font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);margin-bottom:16px;font-weight:600;}
.deliverables ul{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
.deliverables li{display:flex;gap:11px;font-size:.98rem;color:var(--grey);}
.deliverables li::before{content:"";width:7px;height:7px;border-radius:2px;background:var(--blue);flex:0 0 auto;margin-top:9px;}

/* Service section blocks */
.service{padding:80px 0;border-top:1px solid var(--line);scroll-margin-top:100px;}
.service-grid{display:grid;grid-template-columns:1.25fr .9fr;gap:56px;align-items:start;}
.service .num{font-size:.8rem;font-weight:700;letter-spacing:.14em;color:var(--blue);}
.service h2{font-size:clamp(1.6rem,3vw,2.2rem);margin:14px 0 18px;}
.service .intro{color:var(--grey);margin-bottom:24px;}
.checklist{list-style:none;margin:0;padding:0;display:grid;gap:13px;}
.checklist li{display:flex;gap:13px;color:var(--grey);font-size:1rem;}
.checklist li svg{flex:0 0 auto;color:var(--blue);margin-top:4px;}
@media(max-width:820px){.service-grid{grid-template-columns:1fr;gap:32px;}}

/* Insight cards */
.insight-grid{margin-top:52px;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.insight-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:28px;display:flex;flex-direction:column;gap:14px;transition:transform .2s var(--ease),border-color .2s;min-height:230px;}
.insight-card:hover{transform:translateY(-4px);border-color:var(--line-strong);}
.insight-card .tag{font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--grey-muted);}
.insight-card.soon .tag{color:var(--blue);}
.insight-card h3{font-size:1.18rem;line-height:1.3;}
.insight-card .read{margin-top:auto;font-size:.9rem;color:var(--grey-muted);font-weight:600;}
@media(max-width:820px){.insight-grid{grid-template-columns:1fr;}}

/* Signup / inline */
.signup{margin-top:64px;border:1px solid var(--line);border-radius:14px;padding:36px;background:var(--navy-2);display:flex;gap:30px;justify-content:space-between;align-items:center;flex-wrap:wrap;}
.signup h3{font-size:1.3rem;margin-bottom:8px;}
.signup p{color:var(--grey);font-size:.98rem;max-width:420px;}
.signup form{display:flex;gap:10px;flex-wrap:wrap;}
.signup input{padding:13px 15px;border:1px solid var(--line-strong);border-radius:8px;background:rgba(255,255,255,.03);color:var(--white);font:inherit;min-width:240px;}
.signup input:focus{outline:none;border-color:var(--blue);}

/* Contact form */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 20px;}
.field{margin-bottom:18px;}
.field.full{grid-column:1 / -1;}
.field label{display:block;font-size:.83rem;font-weight:600;color:var(--grey);margin-bottom:8px;}
.field .opt{color:var(--grey-muted);font-weight:400;}
.field input,.field textarea,.field select{width:100%;padding:13px 15px;border:1px solid var(--line-strong);border-radius:8px;background:rgba(255,255,255,.03);color:var(--white);font:inherit;font-size:1rem;transition:border-color .15s,box-shadow .15s;}
.field input::placeholder,.field textarea::placeholder{color:#7f93a7;}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(46,156,230,.18);}
.field textarea{resize:vertical;min-height:120px;}
.field select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%237286998f' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;}
.form-msg{display:none;margin-top:14px;padding:13px 16px;border-radius:8px;font-size:.94rem;}
.form-msg.ok{display:block;background:rgba(46,156,230,.14);border:1px solid var(--blue);color:#cfeafb;}
.form-msg.err{display:block;background:rgba(211,89,64,.16);border:1px solid #d35940;color:#f4c6bd;}
@media(max-width:640px){.form-grid{grid-template-columns:1fr;}}

/* Two-column split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start;}
@media(max-width:820px){.split{grid-template-columns:1fr;gap:36px;}}

/* CTA band */
.cta-band{position:relative;overflow:hidden;padding:104px 0;}
.cta-band::before{content:"";position:absolute;bottom:-40%;left:-6%;width:680px;height:680px;border-radius:50%;background:radial-gradient(circle,rgba(46,156,230,.13),transparent 62%);pointer-events:none;}
.cta-band .inner{position:relative;z-index:2;max-width:640px;}
.cta-band h2{font-size:clamp(1.9rem,3.8vw,2.8rem);letter-spacing:-.03em;}
.cta-band p{margin-top:18px;font-size:1.12rem;color:var(--grey);}
.cta-band .btn{margin-top:32px;}

/* Founder / principles */
.principles{list-style:none;margin:34px 0 0;padding:0;display:grid;gap:0;}
.principles li{display:flex;gap:15px;padding:18px 0;border-top:1px solid var(--line);color:var(--white);font-weight:500;font-size:1.05rem;}
.principles li:last-child{border-bottom:1px solid var(--line);}
.principles li svg{flex:0 0 auto;color:var(--blue);margin-top:3px;}
.founder-card{display:grid;grid-template-columns:auto 1fr;gap:26px;align-items:center;margin-bottom:30px;}
.founder-mark{width:84px;height:84px;border-radius:16px;background:linear-gradient(150deg,var(--panel-2),var(--navy-3));border:1px solid var(--line-strong);display:grid;place-items:center;color:var(--blue);font-weight:700;font-size:1.5rem;letter-spacing:-.02em;}
.founder-photo{width:132px;height:132px;border-radius:16px;object-fit:cover;object-position:center 30%;border:1px solid var(--line-strong);display:block;}
@media(max-width:520px){ .founder-photo{width:104px;height:104px;} }
.founder-card h3{font-size:1.4rem;}
.founder-card .role{color:var(--grey-muted);font-size:.98rem;margin-top:2px;}
.founder-lead{max-width:800px;}
.founder-bio{margin-top:26px;}
.founder-bio p{color:var(--grey);font-size:1.06rem;line-height:1.7;}
.founder-bio p + p{margin-top:18px;}

/* Services closing statement */
.closing-lead{max-width:820px;}
.closing-lead .closing{font-size:1.22rem;line-height:1.5;}
.closing-lead .closing-sub{margin-top:18px;color:var(--grey);font-weight:400;font-size:1.08rem;}

/* Footer */
.site-footer{background:var(--navy-3);border-top:1px solid var(--line);padding:66px 0 34px;}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.foot-brand img{height:38px;width:auto;}
.foot-brand p{margin-top:16px;max-width:290px;color:var(--grey-muted);font-size:.93rem;}
.foot-col h4{font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:var(--grey-muted);margin-bottom:15px;font-weight:600;}
.foot-col a,.foot-col div{display:block;color:var(--grey);font-size:.94rem;margin-bottom:10px;}
.foot-col a:hover{color:var(--blue);}
.foot-bottom{margin-top:52px;padding-top:24px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:.85rem;color:var(--grey-muted);}
.foot-bottom a{color:var(--grey-muted);}
.foot-bottom a:hover{color:var(--blue);}
@media(max-width:820px){.foot-top{grid-template-columns:1fr 1fr;gap:32px;}}

/* Legal pages */
.legal h2{font-size:1.22rem;margin:36px 0 10px;color:var(--white);}
.legal h2:first-child{margin-top:0;}
.legal p{color:var(--grey);}
.legal a{color:var(--blue);font-weight:600;}

/* FAQ (native details/summary accordion) */
.faq{max-width:840px;margin-top:48px;border-top:1px solid var(--line);}
.faq details{border-bottom:1px solid var(--line);}
.faq summary{list-style:none;cursor:pointer;padding:22px 2px;display:flex;justify-content:space-between;align-items:center;gap:24px;font-size:1.1rem;font-weight:600;color:var(--white);transition:color .15s;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{color:var(--blue);}
.faq summary::after{content:"+";font-size:1.55rem;font-weight:400;color:var(--blue);line-height:1;flex:0 0 auto;transition:transform .2s ease;}
.faq details[open] summary::after{transform:rotate(45deg);}
.faq .ans{padding:0 2px 24px;color:var(--grey);font-size:1rem;line-height:1.7;max-width:730px;}
.faq .ans a{color:var(--blue);font-weight:600;}

/* Diagrams (SVG) */
.diagram{margin:0 auto;}
.diagram img{width:100%;height:auto;display:block;}
.cap-diagram{max-width:720px;margin-top:52px;}
.journey-diagram{max-width:920px;margin-top:36px;margin-bottom:6px;}
@media(max-width:720px){ .diagram{display:none;} }

/* Reveal — hidden only when JS is active, so content is visible without JS (SEO / no-JS) */
.reveal{transition:opacity .7s var(--ease),transform .7s var(--ease);}
html.js .reveal{opacity:0;transform:translateY(22px);}
html.js .reveal.in{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){html.js .reveal{opacity:1;transform:none;transition:none;}*{scroll-behavior:auto;}}

/* Responsive */
@media(max-width:900px){
  .qgrid,.vgrid{grid-template-columns:1fr;}
  .diffs{grid-template-columns:1fr;gap:32px;}
  .journey-track,.journey-track.four{grid-template-columns:1fr;gap:0;}
  .jnode{padding:24px 0 24px 34px;}
  .jnode::before{top:0;bottom:0;left:9px;right:auto;width:2px;height:auto;}
  .jnode:first-child::before{top:50%;left:9px;}
  .jnode:last-child::before{bottom:50%;top:0;}
  .jdot{position:absolute;left:0;top:26px;}
}
@media(max-width:760px){
  body{font-size:16px;}
  .wrap{padding:0 22px;}
  .band{padding:76px 0;}
  .hero{padding:140px 0 72px;}
  .brand img{height:40px;}
  .nav{position:absolute;top:88px;left:0;right:0;background:#0a1626;flex-direction:column;align-items:flex-start;gap:0;padding:12px 22px 22px;border-bottom:1px solid var(--line);display:none;}
  .nav.open{display:flex;}
  .nav a.navlink{padding:14px 0;width:100%;}
  .nav a.navlink[aria-current="page"]::after{display:none;}
  .nav .btn{margin-top:10px;}
  .nav-toggle{display:block;}
  .signup{flex-direction:column;align-items:flex-start;}
  .signup input{min-width:100%;}
}