/* ==========================================================================
   Xperbot — shared design system
   Palette evolves the original brand (#6D9EFA / #2D3748) into an accessible,
   typographically disciplined system. Loaded by every page.
   ========================================================================== */

:root{
  /* brand */
  --blue:#6D9EFA;          /* brand accent — fills, on dark, decoration */
  --blue-deep:#2F63D8;     /* accessible blue for text/links on white */
  --blue-dark:#2D3748;     /* original brand dark blue */
  --blue-wash:#EEF3FE;     /* tinted panels */

  /* ink */
  --ink:#141C26;
  --ink-soft:#59646F;
  --ink-faint:#98A2AC;

  /* surfaces */
  --bg:#FFFFFF;
  --panel:#F5F7FA;
  --panel-2:#EDF0F5;
  --line:#E3E7ED;
  --dark:#18222E;

  /* program sub-brands */
  --rsip:#2F63D8;
  --aal-teal:#0E7C8C;
  --aal-green:#5C9E2C;
  --aal-amber:#C07E14;

  --shadow-sm:0 2px 8px rgba(20,28,38,.05);
  --shadow:0 10px 34px rgba(20,28,38,.09);
  --shadow-lg:0 24px 60px rgba(20,28,38,.14);
  --nav-h:74px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.6;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block}
a{color:var(--blue-deep);text-decoration:none}
svg{display:block}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:4px}

/* ---------- layout ---------- */
.wrap{max-width:1180px;margin:0 auto;padding:0 28px}
.wrap-narrow{max-width:860px;margin:0 auto;padding:0 28px}
section{padding:96px 0;scroll-margin-top:var(--nav-h)}
.sec-tight{padding:68px 0}
.panel{background:var(--panel)}
.panel-2{background:var(--panel-2)}
.dark-sec{background:var(--dark);color:#fff}
.dark-sec h2,.dark-sec h3{color:#fff}
.dark-sec p{color:#C3CCD6}

/* ---------- type ---------- */
.kicker{
  display:block;font-size:12.5px;font-weight:700;letter-spacing:.2em;
  text-transform:uppercase;color:var(--blue-deep);margin-bottom:18px;
}
.dark-sec .kicker{color:var(--blue)}
h1{font-size:clamp(38px,5.4vw,66px);font-weight:800;letter-spacing:-.032em;line-height:1.04}
h2{font-size:clamp(29px,3.7vw,45px);font-weight:800;letter-spacing:-.026em;line-height:1.1}
h3{font-size:clamp(19px,1.6vw,23px);font-weight:700;letter-spacing:-.012em;line-height:1.28}
h4{font-size:17px;font-weight:700;letter-spacing:-.008em}
.lead{font-size:clamp(17px,1.35vw,19.5px);color:var(--ink-soft);line-height:1.62}
.muted{color:var(--ink-soft)}
.grad{background:linear-gradient(96deg,var(--blue-deep),var(--blue));-webkit-background-clip:text;background-clip:text;color:transparent}
.sec-head{max-width:760px;margin-bottom:56px}
.sec-head h2+p{margin-top:20px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;padding:14px 27px;border-radius:999px;
  font-weight:700;font-size:15.5px;border:1.6px solid var(--ink);color:var(--ink);
  background:none;transition:background .16s ease,color .16s ease,border-color .16s ease,transform .16s ease;
  cursor:pointer;white-space:nowrap;
}
.btn:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-solid{background:var(--ink);color:#fff}
.btn-solid:hover{background:#2B3947;border-color:#2B3947}
.btn-blue{background:var(--blue-deep);border-color:var(--blue-deep);color:#fff}
.btn-blue:hover{background:#2452B8;border-color:#2452B8;color:#fff}
.btn-ghost-light{border-color:rgba(255,255,255,.45);color:#fff}
.btn-ghost-light:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn-sm{padding:10px 20px;font-size:14.5px}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.arrow-link{display:inline-flex;align-items:center;gap:7px;font-weight:700;font-size:15px;color:var(--blue-deep)}
.arrow-link:hover{gap:11px;transition:gap .16s ease}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.9);
  backdrop-filter:saturate(160%) blur(12px);-webkit-backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-inner{max-width:1180px;margin:0 auto;padding:0 28px;height:var(--nav-h);display:flex;align-items:center;gap:26px}
.nav-logo img{height:34px;width:auto}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-links a{color:var(--ink-soft);font-size:15px;font-weight:600}
.nav-links a:hover{color:var(--ink)}
.nav-links a.active{color:var(--ink)}
.nav-cta{
  font-size:14.5px;font-weight:700;color:var(--ink);border:1.6px solid var(--ink);
  border-radius:999px;padding:9px 19px;white-space:nowrap;
}
.nav-cta:hover{background:var(--ink);color:#fff}
.nav-toggle{display:none;margin-left:auto;background:none;border:0;cursor:pointer;padding:8px;color:var(--ink)}
.nav-toggle svg{width:24px;height:24px}
.nav-mobile{display:none;border-top:1px solid var(--line);background:#fff;padding:14px 28px 22px}
.nav-mobile.open{display:block}
.nav-mobile a{display:block;padding:11px 0;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line)}
.nav-mobile a:last-child{border-bottom:0}

/* ---------- hero ---------- */
.hero{padding:86px 0 96px;background:
  radial-gradient(900px 460px at 78% -8%,rgba(109,158,250,.18),transparent 60%),
  radial-gradient(700px 400px at 4% 104%,rgba(109,158,250,.11),transparent 62%),#fff;}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:64px;align-items:center}
.hero h1{margin-bottom:24px}
.hero .lead{max-width:590px}
.facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:38px}
.facts span{
  font-size:13.5px;font-weight:600;color:var(--ink-soft);background:#fff;
  border:1px solid var(--line);border-radius:999px;padding:7px 15px;box-shadow:var(--shadow-sm);
}
.facts span b{color:var(--ink)}

/* page hero (inner pages) */
.page-hero{padding:76px 0 72px;background:var(--dark);color:#fff;position:relative;overflow:hidden}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(760px 420px at 84% 8%,rgba(109,158,250,.26),transparent 62%);
}
.page-hero .wrap{position:relative;z-index:1}
.page-hero .kicker{color:var(--blue)}
.page-hero p{color:#BFC9D4;max-width:660px}
.page-hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}

/* ---------- 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:30px;
  box-shadow:var(--shadow-sm);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  display:flex;flex-direction:column;
}
a.card{color:inherit}
a.card:hover,.card-hover:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#CFD9E8}
.card h3{margin-bottom:11px}
.card p{color:var(--ink-soft);font-size:15.5px}
.card .arrow-link{margin-top:auto;padding-top:18px}
.ico{
  width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--blue-wash);color:var(--blue-deep);margin-bottom:20px;flex:none;
}
.ico svg{width:23px;height:23px;stroke:currentColor;stroke-width:1.9;fill:none;stroke-linecap:round;stroke-linejoin:round}
.tag{
  display:inline-block;align-self:flex-start;font-size:11.5px;font-weight:700;letter-spacing:.11em;
  text-transform:uppercase;padding:5px 11px;border-radius:999px;background:var(--blue-wash);
  color:var(--blue-deep);margin-bottom:16px;
}
.tag-aal{background:rgba(14,124,140,.11);color:var(--aal-teal)}
.tag-live{background:rgba(92,158,44,.13);color:#41761D}
.tag-soon{background:rgba(192,126,20,.13);color:#94600D}

/* numbered list */
.steps{counter-reset:s;display:grid;gap:2px}
.step{display:grid;grid-template-columns:64px 1fr;gap:22px;padding:26px 0;border-top:1px solid var(--line)}
.step:last-child{border-bottom:1px solid var(--line)}
.step .n{font-size:30px;font-weight:800;color:var(--blue);letter-spacing:-.03em;line-height:1}
.step h3{margin-bottom:8px}
.step p{color:var(--ink-soft);font-size:15.5px;max-width:640px}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 24px}
.dark-sec .stat{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.13)}
.stat b{display:block;font-size:clamp(30px,3.4vw,42px);font-weight:800;letter-spacing:-.035em;line-height:1;color:var(--blue-deep)}
.dark-sec .stat b{color:var(--blue)}
.stat small{display:block;margin-top:10px;font-size:13.5px;font-weight:600;color:var(--ink-soft)}
.dark-sec .stat small{color:#AAB6C2}

/* feature split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.split-media{border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
.checks{list-style:none;margin-top:26px;display:grid;gap:13px}
.checks li{display:grid;grid-template-columns:22px 1fr;gap:13px;font-size:15.5px;color:var(--ink-soft)}
.checks li b{color:var(--ink);font-weight:650}
.checks svg{width:20px;height:20px;stroke:var(--blue-deep);stroke-width:2.4;fill:none;stroke-linecap:round;stroke-linejoin:round;margin-top:3px}
.dark-sec .checks li{color:#C3CCD6}
.dark-sec .checks li b{color:#fff}
.dark-sec .checks svg{stroke:var(--blue)}

/* table */
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:#fff}
table{border-collapse:collapse;width:100%;min-width:720px;font-size:14.8px}
th,td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
thead th{background:var(--panel);font-weight:700;font-size:12.5px;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-soft);line-height:1.35}
thead th:first-child{color:var(--ink)}
tbody tr:last-child td{border-bottom:0}
td.own{background:var(--blue-wash);font-weight:650;color:var(--ink)}
th.own{background:#DDE8FD;color:var(--blue-deep)}
td strong{font-weight:700}

/* people */
.people{display:grid;grid-template-columns:repeat(2,1fr);gap:34px;max-width:760px;margin:0 auto 44px}
.people.people-3{grid-template-columns:repeat(3,1fr);max-width:940px}
.person{text-align:center}
.person img{width:150px;height:150px;border-radius:50%;object-fit:cover;margin:0 auto 16px;box-shadow:var(--shadow-sm)}
.person h3{margin-bottom:3px}
.person .role{font-size:14.5px;color:var(--ink-soft);margin-bottom:5px}
.person a{font-size:14.5px;font-weight:600}
.people-row{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;max-width:900px;margin:0 auto}
.people-row .person h3{font-size:19px}

/* logo wall */
.logos{display:grid;grid-template-columns:repeat(6,1fr);gap:30px 34px;align-items:center}
.logos img{height:46px;width:auto;margin:0 auto;object-fit:contain;filter:grayscale(1);opacity:.62;transition:filter .2s ease,opacity .2s ease}
.logos img:hover{filter:none;opacity:1}

/* CTA band */
.cta-band{background:var(--dark);color:#fff;padding:82px 0}
.cta-band h2{color:#fff;margin-bottom:18px}
.cta-band p{color:#BFC9D4;max-width:620px}
.cta-band .cta-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:52px;align-items:center}
.cta-panel{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:18px;padding:30px;display:grid;gap:13px}
.cta-panel .btn{justify-content:center}
.cta-panel p{font-size:14.5px;color:#93A0AD;text-align:center;margin-top:4px}

/* footer */
footer{background:var(--panel);border-top:1px solid var(--line);padding:64px 0 34px;color:var(--ink-soft);font-size:15px}
.foot-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}
.foot-brand img{height:34px;margin-bottom:18px}
.foot-brand p{max-width:330px;font-size:15px}
.foot-col h4{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink);margin-bottom:16px}
.foot-col ul{list-style:none;display:grid;gap:11px}
.foot-col a{color:var(--ink-soft);font-weight:500}
.foot-col a:hover{color:var(--blue-deep)}
.social{display:flex;gap:10px;margin-top:22px}
.social a{width:38px;height:38px;border-radius:50%;background:var(--blue-dark);color:#fff;display:flex;align-items:center;justify-content:center;transition:background .16s ease}
.social a:hover{background:var(--blue-deep)}
.social svg{width:17px;height:17px;fill:currentColor}
.foot-legal{border-top:1px solid var(--line);margin-top:46px;padding-top:26px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:14px;color:var(--ink-faint)}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s cubic-bezier(.2,.6,.3,1),transform .6s cubic-bezier(.2,.6,.3,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .btn:hover{transform:none}
}

/* ---------- responsive ---------- */
@media (max-width:1000px){
  .g4{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .logos{grid-template-columns:repeat(4,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .foot-brand{grid-column:1/-1}
}
@media (max-width:860px){
  section{padding:66px 0}
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:block}
  .hero{padding:56px 0 66px}
  .hero-grid,.page-hero-grid,.split,.cta-band .cta-grid{grid-template-columns:1fr;gap:38px}
  .split-media{order:-1}
  .g2,.g3{grid-template-columns:1fr}
  .people,.people.people-3,.people-row{grid-template-columns:1fr !important;gap:30px}
  .sec-head{margin-bottom:38px}
}
@media (max-width:560px){
  .wrap,.wrap-narrow,.nav-inner{padding:0 20px}
  .g4{grid-template-columns:1fr}
  .logos{grid-template-columns:repeat(3,1fr)}
  .step{grid-template-columns:44px 1fr;gap:14px}
  .step .n{font-size:24px}
  .foot-grid{grid-template-columns:1fr}
  .cta-row .btn{width:100%;justify-content:center}
}