:root{
  --navy:#0F1E3B;
  --navy-light:#16294F;
  --signal:#2563EB;
  --signal-dark:#1D4ED8;
  --steel:#64748B;
  --mist:#F1F5F9;
  --ink:#0F172A;
  --border:#E2E8F0;
  --white:#FFFFFF;
  --radius:12px;
  --shadow-sm:0 1px 2px rgba(15,30,59,.05);
  --shadow-md:0 8px 24px rgba(15,30,59,.08);
  --shadow-lg:0 24px 60px rgba(15,30,59,.16);
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--ink);
  background:var(--white);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{
  font-family:"Space Grotesk",sans-serif;
  color:var(--navy);
  letter-spacing:-0.02em;
  line-height:1.15;
}
.mono{font-family:"IBM Plex Mono",ui-monospace,monospace;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
ul{list-style:none;}

/* ── Buttons ── */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-family:inherit;font-weight:600;font-size:14px;
  padding:11px 20px;border-radius:9px;border:1.5px solid transparent;
  cursor:pointer;transition:transform .15s, box-shadow .15s, background .15s;
  white-space:nowrap;
}
.btn-primary{background:var(--navy);color:#fff;}
.btn-primary:hover{background:var(--navy-light);transform:translateY(-1px);box-shadow:var(--shadow-md);}
.btn-ghost{background:transparent;color:var(--navy);border-color:var(--border);}
.btn-ghost:hover{background:var(--mist);}
.btn-lg{padding:14px 26px;font-size:15px;}
.btn-block{width:100%;justify-content:center;margin-top:6px;}
.btn-arrow{transition:transform .15s;}
.btn:hover .btn-arrow{transform:translateX(3px);}
.btn:focus-visible{outline:2px solid var(--signal);outline-offset:2px;}

/* ── Nav ── */
.nav{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.nav-inner{
  max-width:1180px;margin:0 auto;padding:14px 24px;
  display:flex;align-items:center;justify-content:space-between;
}
.brand{display:flex;align-items:center;gap:10px;font-family:"Space Grotesk",sans-serif;font-weight:700;font-size:17px;color:var(--navy);}
.brand-mark{width:28px;height:34px;object-fit:contain;}
.nav-links{display:flex;gap:28px;}
.nav-links a{font-size:14px;font-weight:500;color:var(--steel);transition:color .15s;}
.nav-links a:hover{color:var(--navy);}
.nav-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:6px;}
.nav-toggle span{width:20px;height:2px;background:var(--navy);border-radius:2px;}

/* ── Hero ── */
.hero{padding:76px 24px 40px;overflow:hidden;}
.hero-inner{
  max-width:1180px;margin:0 auto;
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
}
.eyebrow{
  font-family:"IBM Plex Mono",monospace;font-size:11.5px;font-weight:600;
  letter-spacing:.08em;color:var(--signal);margin-bottom:16px;
}
.eyebrow-light{color:#93C5FD;}
h1{font-size:clamp(32px,4.2vw,48px);margin-bottom:20px;}
.hero-sub{font-size:16px;color:var(--steel);max-width:520px;margin-bottom:30px;}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:36px;}
.hero-stats{display:flex;gap:28px;flex-wrap:wrap;}
.hero-stat{font-size:12.5px;color:var(--steel);display:flex;flex-direction:column;gap:2px;}
.hero-stat .mono{font-size:22px;font-weight:600;color:var(--navy);}

/* ── App shell mockup (hero visual) ── */
.hero-visual{display:flex;justify-content:center;}
.app-shell{
  width:100%;max-width:460px;
  background:var(--navy);border-radius:16px;
  box-shadow:var(--shadow-lg);
  overflow:hidden;
  transform:rotate(1.2deg);
}
.app-shell-topbar{
  display:flex;align-items:center;gap:10px;
  padding:11px 14px;background:rgba(255,255,255,.05);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.app-shell-dots{display:flex;gap:5px;}
.app-shell-dots span{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.25);}
.app-shell-url{font-size:10.5px;color:rgba(255,255,255,.4);margin-left:6px;}
.app-shell-body{display:flex;min-height:290px;}
.app-shell-sidebar{width:130px;padding:14px 10px;border-right:1px solid rgba(255,255,255,.08);}
.shell-logo{width:22px;height:22px;border-radius:6px;background:var(--signal);margin-bottom:16px;}
.shell-item{
  display:flex;align-items:center;gap:8px;
  font-size:10.5px;color:rgba(255,255,255,.55);
  padding:7px 6px;border-radius:6px;margin-bottom:2px;
}
.shell-item.active{background:rgba(255,255,255,.08);color:#fff;}
.shell-item .dot{width:6px;height:6px;border-radius:50%;flex-shrink:0;}
.app-shell-main{flex:1;padding:16px;background:rgba(255,255,255,.02);}
.shell-cards{display:flex;gap:8px;margin-bottom:16px;}
.shell-card{flex:1;background:rgba(255,255,255,.06);border-radius:8px;padding:10px;}
.shell-card-label{font-family:"IBM Plex Mono",monospace;font-size:8px;color:rgba(255,255,255,.4);letter-spacing:.05em;margin-bottom:6px;}
.shell-card-val{font-family:"Space Grotesk",sans-serif;font-size:18px;font-weight:700;color:#fff;}
.shell-rows{display:flex;flex-direction:column;gap:10px;}
.shell-row{display:flex;align-items:center;gap:8px;}
.shell-row span:first-child{width:16px;height:16px;border-radius:4px;background:rgba(255,255,255,.08);flex-shrink:0;}
.shell-row-bar{height:7px;border-radius:4px;background:linear-gradient(90deg,var(--signal),#60A5FA);}

/* ── Trust strip ── */
.trust-strip{background:var(--mist);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:14px 24px;}
.trust-strip-inner{
  max-width:1180px;margin:0 auto;
  display:flex;justify-content:center;flex-wrap:wrap;gap:10px;
  font-size:12.5px;color:var(--steel);font-weight:500;
}
.trust-strip .sep{color:var(--border);}

/* ── Sections ── */
.section{padding:88px 24px;}
.section-inner{max-width:1180px;margin:0 auto;}
.section-mist{background:var(--mist);}
.section-dark{background:var(--navy);}
.section-head{max-width:640px;margin-bottom:52px;}
.section-head h2{font-size:clamp(26px,3.2vw,36px);margin-bottom:14px;}
.section-sub{font-size:15.5px;color:var(--steel);}
.section-sub-light{color:#B8C4DC;}

/* ── Module grid ── */
.module-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
}
.module-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow-sm);
  border-top:3px solid var(--accent);
  transition:transform .18s, box-shadow .18s;
}
.module-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.module-icon{font-size:26px;margin-bottom:14px;}
.module-card h3{font-size:16.5px;margin-bottom:9px;}
.module-card p{font-size:13.5px;color:var(--steel);}

/* ── Portal spotlight ── */
.portal-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.portal-copy h2{color:#fff;font-size:clamp(26px,3.2vw,36px);margin-bottom:16px;}
.portal-list{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.portal-list li{
  font-size:14px;color:#D7E1F2;padding-left:22px;position:relative;
}
.portal-list li::before{
  content:"";position:absolute;left:0;top:7px;width:8px;height:8px;
  border-radius:2px;background:#60A5FA;
}
.portal-visual{display:flex;justify-content:center;}
.portal-mock{
  width:100%;max-width:340px;background:#fff;border-radius:14px;
  padding:20px;box-shadow:var(--shadow-lg);
}
.portal-mock-header{height:14px;width:60%;background:var(--mist);border-radius:4px;margin-bottom:18px;}
.portal-mock-stat-row{display:flex;gap:8px;margin-bottom:16px;}
.portal-mock-stat{flex:1;height:52px;background:var(--mist);border-radius:8px;border-bottom:3px solid var(--signal);}
.portal-mock-stat.warn{border-bottom-color:#F59E0B;}
.portal-mock-card{height:60px;background:var(--mist);border-radius:8px;margin-bottom:10px;}
.portal-mock-card.short{height:40px;width:70%;}

/* ── Architecture ── */
.arch-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.arch-card{padding:0;}
.arch-num{font-size:13px;color:var(--signal);font-weight:600;margin-bottom:12px;}
.arch-card h3{font-size:18px;margin-bottom:10px;}
.arch-card p{font-size:14px;color:var(--steel);}

/* ── Roles ── */
.role-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:28px;}
.role-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px;}
.role-badge{display:inline-block;font-size:12px;font-weight:700;padding:4px 12px;border-radius:20px;margin-bottom:14px;}
.role-card p{font-size:13.5px;color:var(--steel);}
.security-footnote{font-size:13px;color:var(--steel);text-align:center;font-family:"IBM Plex Mono",monospace;}

/* ── CTA band ── */
.cta-band{background:var(--navy);padding:76px 24px;text-align:center;}
.cta-band-inner{max-width:640px;margin:0 auto;}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,32px);margin-bottom:28px;}

/* ── Footer ── */
.footer{background:var(--navy);border-top:1px solid rgba(255,255,255,.08);padding:48px 24px 20px;}
.footer-inner{max-width:1180px;margin:0 auto;display:flex;justify-content:space-between;flex-wrap:wrap;gap:32px;margin-bottom:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-family:"Space Grotesk",sans-serif;font-weight:700;color:#fff;}
.footer-cols{display:flex;gap:56px;}
.footer-col-title{font-size:11px;font-weight:700;letter-spacing:.06em;color:#93C5FD;margin-bottom:14px;font-family:"IBM Plex Mono",monospace;}
.footer-cols a{display:block;font-size:13.5px;color:#B8C4DC;margin-bottom:9px;}
.footer-cols a:hover{color:#fff;}
.footer-bottom{max-width:1180px;margin:0 auto;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);font-size:12px;color:#7C8CAD;}

/* ── Login modal ── */
.modal-overlay{
  position:fixed;inset:0;background:rgba(15,23,42,.6);backdrop-filter:blur(3px);
  display:none;align-items:center;justify-content:center;padding:20px;z-index:1000;
}
.modal-overlay.open{display:flex;}
.login-modal{
  position:relative;background:#fff;border-radius:16px;padding:36px 32px;
  width:100%;max-width:380px;box-shadow:var(--shadow-lg);
  text-align:center;
}
.modal-close{
  position:absolute;top:14px;right:14px;background:none;border:none;
  font-size:16px;color:var(--steel);cursor:pointer;padding:6px;
}
.login-modal-logo{width:38px;height:auto;margin:0 auto 14px;}
.login-modal h2{font-size:19px;margin-bottom:8px;}
.login-modal-sub{font-size:13px;color:var(--steel);margin-bottom:22px;}
.field{text-align:left;margin-bottom:14px;}
.field label{display:block;font-size:12.5px;font-weight:600;color:var(--ink);margin-bottom:6px;}
.field input{
  width:100%;font-family:inherit;font-size:14px;padding:10px 12px;
  border:1px solid var(--border);border-radius:8px;background:var(--mist);
}
.field input:focus{outline:2px solid var(--signal);outline-offset:1px;background:#fff;}
.login-modal-footer{font-size:12px;color:var(--steel);margin-top:16px;}

/* ── Responsive ── */
@media(max-width:900px){
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .module-grid{grid-template-columns:repeat(2,1fr);}
  .portal-grid{grid-template-columns:1fr;}
  .arch-grid{grid-template-columns:1fr;gap:32px;}
  .role-grid{grid-template-columns:repeat(2,1fr);}
  .nav-links{
    position:absolute;top:100%;left:0;right:0;background:#fff;
    flex-direction:column;padding:16px 24px;border-bottom:1px solid var(--border);
    display:none;gap:14px;
  }
  .nav-links.open{display:flex;}
  .nav-toggle{display:flex;}
}
@media(max-width:560px){
  .module-grid{grid-template-columns:1fr;}
  .role-grid{grid-template-columns:1fr;}
  .hero-cta{flex-direction:column;align-items:stretch;}
  .hero-cta .btn{justify-content:center;}
}

@media(prefers-reduced-motion:reduce){
  *{transition:none !important;scroll-behavior:auto !important;}
}