/* Layout: navy masthead and footer bracket a light, gridded body; the portal is a separate app view with a sidebar. */
:root{
  /* Brand: logo blue #0064B4 to cyan #239DD7, logo grey #78787B, ISC navy #0B2A42 */
  --blue:#0064B4; --blue-2:#239DD7; --navy:#0B2A42; --ink:#0B2A42;
  --grey:#78787B; --mist:#F4F7FA; --line:#DDE5EC; --card:#FFFFFF;
  --bg:#F7F9FB; --fg:#0B2A42; --muted:#5B6B7A; --soft:#E6F0F8;
  --hero-bg:#0B2A42; --hero-fg:#FFFFFF; --hero-muted:#B4C6D6; --head-bg:#FFFFFF; --head-fg:#0B2A42; --head-line:#DDE5EC;
  --ok:#1E8A55; --ok-bg:#E3F4EA; --warn:#A86500; --warn-bg:#FFF1D9; --bad:#B3261E; --bad-bg:#FBE4E2;
  --f-display:"Barlow Semi Condensed","Arial Narrow",Arial,sans-serif;
  --f-body:"Lato","Helvetica Neue",Arial,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
  --r:6px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#081C2C; --fg:#E6EEF5; --muted:#9DB0C2; --card:#0F2A40; --line:#1F3E57; --soft:#123553; --mist:#0C2337;
  --hero-bg:#05131F; --hero-fg:#FFFFFF; --hero-muted:#9DB0C2; --blue:#3AA6E6; --blue-2:#62BDF0;
  --ok:#5BD08E; --ok-bg:#12352A; --warn:#F2B451; --warn-bg:#3A2A0E; --bad:#F2867E; --bad-bg:#3D1715; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#081C2C; --fg:#E6EEF5; --muted:#9DB0C2; --card:#0F2A40; --line:#1F3E57; --soft:#123553; --mist:#0C2337;
  --hero-bg:#05131F; --hero-fg:#FFFFFF; --hero-muted:#9DB0C2; --blue:#3AA6E6; --blue-2:#62BDF0;
  --ok:#5BD08E; --ok-bg:#12352A; --warn:#F2B451; --warn-bg:#3A2A0E; --bad:#F2867E; --bad-bg:#3D1715; color-scheme:dark}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--fg);font-family:var(--f-body);font-size:16px;line-height:1.6}
h1,h2,h3,h4{font-family:var(--f-display);line-height:1.1;text-wrap:balance;margin:0}
p{margin:0}
a{color:var(--blue)}
button,input,select,textarea{font:inherit}
:focus-visible{outline:2px solid var(--blue-2);outline-offset:2px}
.wrap{max-width:1180px;margin:0 auto;padding-inline:20px}
.eyebrow{font-family:var(--f-display);font-weight:600;letter-spacing:.14em;text-transform:uppercase;font-size:13px;color:var(--blue)}
.btn{display:inline-flex;align-items:center;gap:8px;border:0;border-radius:var(--r);padding:12px 20px;font-weight:700;cursor:pointer;text-decoration:none;font-size:15px}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-2)}
.btn-ghost{background:transparent;color:inherit;box-shadow:inset 0 0 0 1.5px currentColor}
.btn-sm{padding:8px 14px;font-size:14px}
.mono{font-family:var(--f-mono);font-variant-numeric:tabular-nums}

/* Masthead */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:var(--head-bg);color:var(--head-fg);border-bottom:1px solid var(--head-line);box-shadow:0 2px 12px rgba(11,42,66,.06)}
.top .wrap{display:flex;align-items:center;gap:24px;min-height:84px;flex-wrap:wrap}
.logo{display:flex;align-items:center;text-decoration:none;padding-block:8px}
.logo img{height:66px;width:auto;display:block}
.nav{display:flex;gap:2px;margin-left:auto;flex-wrap:wrap;align-items:center}
.nav a{color:var(--head-fg);text-decoration:none;padding:8px 11px;border-radius:var(--r);font-size:14px;font-weight:700}
.nav a:hover{background:#E6F0F8;color:#0064B4}
.nav .portal-link{background:#0064B4;color:#fff}
.nav .portal-link:hover{background:#239DD7;color:#fff}
.menu-btn{display:none;margin-left:auto;background:none;border:1px solid var(--head-line);color:var(--head-fg);border-radius:var(--r);padding:6px 12px}
@media (max-width:900px){.menu-btn{display:block}.nav{display:none;width:100%;padding-bottom:12px}.nav.open{display:flex;flex-direction:column;align-items:stretch}}

/* Hero */
.hero{background:var(--hero-bg);color:var(--hero-fg);padding-block:64px 0;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:40px 40px;pointer-events:none}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:end}
.hero h1{font-size:clamp(40px,6vw,70px);font-weight:700;letter-spacing:-.01em}
.hero h1 em{font-style:normal;color:#5CC0EE}
.hero p.lead{color:var(--hero-muted);font-size:19px;max-width:560px;margin-top:20px}
.hero .ctas{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
.hero .eyebrow{color:#5CC0EE}
.keycard{background:linear-gradient(140deg,#239DD7,#0064B4 55%,#164C78);border-radius:14px;aspect-ratio:1.586;max-width:100%;padding:22px;color:#fff;position:relative;box-shadow:0 30px 60px rgba(0,0,0,.4);transform:rotate(-4deg);margin-bottom:-40px}
.keycard .chip{width:46px;height:36px;border-radius:6px;background:linear-gradient(135deg,#E9D7A0,#B99A4E);margin-top:18px}
.keycard .rn{position:absolute;right:22px;bottom:20px;font-family:var(--f-mono);font-size:13px;text-align:right;opacity:.9}
.keycard .rn b{display:block;font-family:var(--f-display);font-size:44px;line-height:1}
.keycard .brand{font-family:var(--f-display);font-weight:700;letter-spacing:.2em;font-size:13px;opacity:.85}
.keycard .waves{position:absolute;left:22px;bottom:22px;font-family:var(--f-mono);font-size:12px;opacity:.75}
@media (max-width:820px){.hero .wrap{grid-template-columns:1fr}.keycard{max-width:380px;margin-bottom:-30px}}

.facts{background:var(--card);border-bottom:1px solid var(--line);padding-block:60px 28px}
.facts .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.fact b{display:block;font-family:var(--f-display);font-size:38px;color:var(--blue);line-height:1}
.fact span{color:var(--muted);font-size:14px}
@media (max-width:720px){.facts .wrap{grid-template-columns:repeat(2,1fr)}}

section.block{padding-block:80px}
.sec-head{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:end;margin-bottom:40px}
.sec-head h2{font-size:clamp(32px,4vw,46px);margin-top:8px}
.sec-head p{color:var(--muted);max-width:520px}
@media (max-width:780px){.sec-head{grid-template-columns:1fr}}

/* Markets */
.markets{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:20px}
.market{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px;display:flex;flex-direction:column;gap:14px;min-width:0}
.market.lead{background:var(--hero-bg);color:var(--hero-fg);border-color:transparent}
.market.lead p,.market.lead li{color:var(--hero-muted)}
.market h3{font-size:28px}
.market p{color:var(--muted)}
.market ul{margin:0;padding-left:18px;color:var(--muted);font-size:15px}
.tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:4px 8px;border-radius:3px;background:var(--soft);color:var(--blue);align-self:flex-start}
.market.lead .tag{background:#0064B4;color:#fff}
@media (max-width:900px){.markets{grid-template-columns:1fr}}

/* VingCard band */
.vc{background:var(--soft)}
.vc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.vc-item{background:var(--card);border-radius:var(--r);padding:24px;border:1px solid var(--line);min-width:0}
.vc-item h4{font-size:21px;margin-bottom:8px}
.vc-item p{color:var(--muted);font-size:15px}
.vc-item .code{font-family:var(--f-mono);font-size:12px;color:var(--blue);margin-bottom:10px}
@media (max-width:900px){.vc-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.vc-grid{grid-template-columns:1fr}}

/* Brand matrix */
.matrix{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--card)}
.mrow{display:grid;grid-template-columns:220px 1fr;border-top:1px solid var(--line)}
.mrow:first-child{border-top:0}
.mcat{padding:22px 24px;background:var(--mist);font-family:var(--f-display);font-weight:600;font-size:20px}
.mcat small{display:block;font-family:var(--f-body);font-weight:400;font-size:13px;color:var(--muted);margin-top:4px}
.mbrands{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));}
.mbrand{padding:22px 24px;border-left:1px solid var(--line);min-width:0}
.mbrand h4{font-size:22px;color:var(--blue)}
.mbrand p{font-size:14px;color:var(--muted);margin-top:4px}
@media (max-width:720px){.mrow{grid-template-columns:1fr}.mbrand{border-left:0;border-top:1px solid var(--line)}}

/* BHV */
.bhv{background:var(--hero-bg);color:var(--hero-fg)}
.bhv .sec-head p{color:var(--hero-muted)}
.bhv .eyebrow{color:#5CC0EE}
.bhv-grid{display:grid;grid-template-columns:1fr 1fr 1.1fr;gap:20px}
.course{border:1px solid rgba(255,255,255,.14);border-radius:var(--r);padding:26px;min-width:0}
.course h3{font-size:26px;margin-bottom:10px}
.course p,.course li{color:var(--hero-muted);font-size:15px}
.course ul{padding-left:18px;margin:12px 0 0}
.bhv form{background:#fff;color:#211F40;border-radius:var(--r);padding:24px;display:grid;gap:12px}
.bhv form h3{font-size:24px}
@media (max-width:900px){.bhv-grid{grid-template-columns:1fr}}

/* Forms */
.field{display:grid;gap:4px;min-width:0}
.field label{font-size:13px;font-weight:700}
.field input,.field select,.field textarea{border:1px solid var(--line);border-radius:var(--r);padding:10px 12px;background:var(--card);color:var(--fg);width:100%}
.bhv form .field input,.bhv form .field select{background:#fff;color:#211F40;border-color:#C6C6C6}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:520px){.row2{grid-template-columns:1fr}}
.note{font-size:13px;color:var(--muted)}
.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--navy);color:#fff;padding:12px 18px;border-radius:var(--r);font-weight:700;box-shadow:0 10px 30px rgba(0,0,0,.3);z-index:50;max-width:calc(100% - 32px)}

/* Contact & footer */
.contact{display:grid;grid-template-columns:1fr 1.2fr;gap:40px}
.contact dl{display:grid;grid-template-columns:110px 1fr;gap:10px 16px;margin:24px 0 0}
.contact dt{color:var(--muted);font-size:14px}
.contact dd{margin:0;font-weight:700}
.contact form{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px;display:grid;gap:12px}
@media (max-width:820px){.contact{grid-template-columns:1fr}}
footer{background:var(--hero-bg);color:var(--hero-muted);padding-block:36px;font-size:14px}
footer .wrap{display:flex;gap:24px;justify-content:space-between;flex-wrap:wrap}

/* Trusted by, downloads, terms */
.trusted{background:var(--card);border-bottom:1px solid var(--line);padding-block:26px}
.trusted .wrap{display:flex;gap:10px 28px;flex-wrap:wrap;align-items:center}
.trusted .lbl{font-family:var(--f-display);font-weight:600;letter-spacing:.14em;text-transform:uppercase;font-size:12px;color:var(--muted)}
.trusted span.h{font-family:var(--f-display);font-weight:600;font-size:18px;color:var(--fg);opacity:.8;white-space:nowrap}
.lineup{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;margin-top:28px}
.lineup div{background:var(--card);padding:16px 18px;min-width:0}
.lineup b{display:block;font-family:var(--f-display);font-size:19px}
.lineup span{font-size:13px;color:var(--muted)}
@media (max-width:820px){.lineup{grid-template-columns:1fr 1fr}}
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.dl{display:flex;gap:14px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px;min-width:0;cursor:pointer;text-align:left;color:var(--fg);font:inherit}
.dl:hover{border-color:var(--blue)}
.dl .ico{font-family:var(--f-mono);font-size:11px;background:var(--soft);color:var(--blue);padding:6px 8px;border-radius:4px;flex:none}
.dl b{display:block;font-size:15px}
.dl span{font-size:13px;color:var(--muted)}
@media (max-width:820px){.dl-grid{grid-template-columns:1fr}}
.terms-list{columns:2;column-gap:40px;margin:0;padding-left:20px;color:var(--muted);font-size:15px}
.terms-list li{break-inside:avoid;margin-bottom:10px}
.terms-list b{color:var(--fg)}
@media (max-width:720px){.terms-list{columns:1}}
footer a{color:#fff}
footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px;width:100%}
footer h5{font-family:var(--f-display);font-size:15px;letter-spacing:.1em;text-transform:uppercase;color:#fff;margin:0 0 8px}
footer p{margin:0 0 4px}
@media (max-width:720px){footer .cols{grid-template-columns:1fr}}
.accept{display:flex;gap:10px;align-items:flex-start;font-size:14px}
.accept input{margin-top:4px}
@media (prefers-reduced-motion:no-preference){.keycard{animation:float 6s ease-in-out infinite}@keyframes float{50%{transform:rotate(-4deg) translateY(-8px)}}}