:root{
  /* Light-first "Tron Blue" palette (readable) */
  --bg0:#f4f8ff;
  --bg1:#eef5ff;

  --panel:#ffffff;
  --panel2:#f7fbff;

  --line:#b8d7ff;

  --text:#0b1220;
  --muted:#2e4a72;

  --cyan:#00bfe8;
  --blue:#2f7dff;
  --violet:#7a5cff;

  --glow: 0 0 18px rgba(0,191,232,.25);
  --glow-strong: 0 0 28px rgba(47,125,255,.25);

  --radius: 18px;
  --radius-sm: 14px;

  --shadow: 0 10px 30px rgba(7,15,31,.12);
  --shadow2: 0 18px 60px rgba(7,15,31,.14);

  --max: 1120px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }

body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Liberation Sans", sans-serif;
  color:var(--text);
  background:
    radial-gradient(900px 700px at 15% -10%, rgba(0,191,232,.18), transparent 55%),
    radial-gradient(900px 700px at 85% 10%, rgba(47,125,255,.16), transparent 55%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
  overflow-x:hidden;
}

a{ color:inherit; text-decoration:none; }
a:focus{ outline:2px solid rgba(47,125,255,.55); outline-offset:3px; border-radius:10px; }

.shell{
  width:min(var(--max), calc(100% - 40px));
  margin:0 auto;
}

.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden;
  clip:rect(0,0,0,0); border:0;
}

/* Subtle Tron grid background (light-friendly) */
.bg-grid{
  position:fixed; inset:0;
  background-image:
    linear-gradient(rgba(47,125,255,.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,191,232,.12) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(900px 540px at 50% 15%, black 42%, transparent 78%);
  opacity:.35;
  pointer-events:none;
  z-index:-1;
}

/* Header */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  backdrop-filter: blur(10px);
  background: linear-gradient(180deg, rgba(244,248,255,.92), rgba(244,248,255,.70));
  border-bottom: 1px solid rgba(184,215,255,.95);
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:14px 0;
}

.brand{ display:flex; align-items:center; gap:12px; }
.brand-mark{
  width:38px; height:38px;
  border-radius: 12px;
  background:
    radial-gradient(circle at 30% 30%, rgba(0,191,232,.95), rgba(0,191,232,.18) 45%, transparent 60%),
    linear-gradient(135deg, rgba(47,125,255,.9), rgba(122,92,255,.5));
  box-shadow: var(--glow);
  border: 1px solid rgba(47,125,255,.28);
}
.brand-text{ line-height:1.15; }
.brand-title{
  letter-spacing:.18em;
  font-weight:780;
  font-size:14px;
}
.brand-subtitle{
  display:block;
  font-size:12px;
  color: rgba(46,74,114,.92);
  margin-top:2px;
}

.nav{
  display:flex;
  align-items:center;
  gap:10px;
}
.nav-link{
  padding:10px 12px;
  border-radius: 12px;
  color: rgba(11,18,32,.88);
  border: 1px solid transparent;
  transition: transform .15s ease, background .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.nav-link:hover{
  background: rgba(47,125,255,.08);
  border-color: rgba(0,191,232,.25);
  box-shadow: 0 0 0 2px rgba(0,191,232,.10), var(--glow);
  transform: translateY(-1px);
}
.nav-link.is-active{
  background: rgba(47,125,255,.12);
  border-color: rgba(47,125,255,.28);
  box-shadow: 0 0 0 2px rgba(47,125,255,.10), var(--glow);
}
.nav-link--last{
  border-color: rgba(184,215,255,.95);
}

.nav-toggle{
  display:none;
  border:1px solid rgba(47,125,255,.28);
  background: rgba(255,255,255,.78);
  color: rgba(11,18,32,.92);
  border-radius: 14px;
  padding:10px 12px;
  box-shadow: var(--shadow);
}
.nav-toggle-bars{
  display:block; width:18px; height:12px; position:relative;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute; left:0; right:0;
  height:2px; border-radius:2px;
  background: rgba(47,125,255,.9);
  box-shadow: var(--glow);
}
.nav-toggle-bars::before{ top:0; }
.nav-toggle-bars::after{ bottom:0; }

.header-glow{
  height:1px;
  background: linear-gradient(90deg, transparent, rgba(0,191,232,.55), transparent);
  opacity:.75;
}

/* Hero */
.hero{
  padding:56px 0 26px;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.25fr .75fr;
  gap:18px;
  align-items:stretch;
}
@media (max-width: 920px){
  .hero-grid{ grid-template-columns: 1fr; }
}

/* Panels */
.panel{
  background: linear-gradient(180deg, rgba(255,255,255,.92), rgba(247,251,255,.92));
  border: 1px solid rgba(184,215,255,.95);
  border-radius: var(--radius);
  box-shadow: var(--shadow2);
  position:relative;
  overflow:hidden;
}
.panel::before{
  content:"";
  position:absolute; inset:-2px;
  background:
    radial-gradient(600px 220px at 20% 0%, rgba(0,191,232,.12), transparent 55%),
    radial-gradient(520px 200px at 90% 30%, rgba(47,125,255,.12), transparent 55%);
  pointer-events:none;
}
.panel-inner{
  position:relative;
  padding:26px;
}

/* Kicker */
.kicker{
  display:inline-flex;
  gap:8px;
  align-items:center;
  padding:8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(184,215,255,.95);
  background: rgba(255,255,255,.70);
  color: rgba(11,18,32,.86);
  font-size:12px;
  letter-spacing:.06em;
}
.kicker-dot{
  width:8px; height:8px; border-radius:50%;
  background: rgba(0,191,232,.95);
  box-shadow: var(--glow);
}

h1{
  margin:14px 0 10px;
  font-size: 34px;
  line-height: 1.15;
  letter-spacing: .02em;
  color: rgba(11,18,32,.96);
}
.lead{
  margin:0;
  color: rgba(11,18,32,.84);
  font-size: 15px;
  line-height:1.7;
  max-width: 70ch;
}

.cta-row{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:18px;
}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(184,215,255,.95);
  background: rgba(255,255,255,.85);
  box-shadow: var(--shadow);
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
  font-weight:650;
  color: rgba(11,18,32,.92);
  cursor:pointer;
}
.btn:hover{
  transform: translateY(-1px);
  border-color: rgba(47,125,255,.35);
  box-shadow: var(--glow-strong);
}
.btn-primary{
  background: linear-gradient(135deg, rgba(47,125,255,.22), rgba(0,191,232,.18));
  border-color: rgba(47,125,255,.35);
}
.btn-secondary{
  background: rgba(255,255,255,.78);
}

/* Mini card (sidebar) */
.mini-card{
  border-radius: var(--radius);
  border: 1px solid rgba(184,215,255,.95);
  background: linear-gradient(180deg, rgba(255,255,255,.90), rgba(247,251,255,.90));
  box-shadow: var(--shadow);
}
.mini-card .panel-inner{ padding:22px; }
.mini-title{
  font-weight:800;
  letter-spacing:.14em;
  font-size:12px;
  color: rgba(46,74,114,.92);
  text-transform: uppercase;
  margin:0 0 10px;
}
.stat{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:10px 0;
  border-top:1px solid rgba(184,215,255,.70);
}
.stat:first-of-type{ border-top:0; }
.stat-label{ color: rgba(46,74,114,.92); font-size:13px; }
.stat-value{ color: rgba(11,18,32,.92); font-weight:800; }

/* Sections + Cards */
.section{
  padding: 18px 0 56px;
}
.section-title{
  margin: 0 0 12px;
  font-size: 12.5px;
  letter-spacing: .16em;
  color: rgba(46,74,114,.92);
  text-transform: uppercase;
}
.cards{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:14px;
}
@media (max-width: 920px){
  .cards{ grid-template-columns: 1fr; }
}
.card{
  border-radius: var(--radius);
  border: 1px solid rgba(184,215,255,.95);
  background: linear-gradient(180deg, rgba(255,255,255,.90), rgba(247,251,255,.90));
  box-shadow: var(--shadow);
  position:relative;
  overflow:hidden;
}
.card::after{
  content:"";
  position:absolute;
  inset:0;
  background: radial-gradient(380px 160px at 25% 10%, rgba(0,191,232,.10), transparent 60%);
  pointer-events:none;
}
.card-inner{
  position:relative;
  padding:18px;
}
.card h3{
  margin:0 0 8px;
  font-size: 15px;
  letter-spacing: .02em;
  color: rgba(11,18,32,.95);
}
.card p{
  margin:0;
  color: rgba(11,18,32,.82);
  line-height:1.65;
  font-size: 13.5px;
}
.card a.inline{
  display:inline-block;
  margin-top:12px;
  color: rgba(47,125,255,.95);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* Footer */
.site-footer{
  border-top: 1px solid rgba(184,215,255,.95);
  background: linear-gradient(180deg, rgba(244,248,255,.55), rgba(244,248,255,.92));
}
.footer-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding: 18px 0;
}
.footer-brand{
  font-weight:800;
  letter-spacing:.14em;
  font-size:12px;
  color: rgba(46,74,114,.92);
  text-transform: uppercase;
}
.footer-note{
  color: rgba(46,74,114,.90);
  font-size:12.5px;
  margin-top:4px;
  max-width: 70ch;
}
.footer-right{
  display:flex;
  align-items:center;
  gap:10px;
  color: rgba(46,74,114,.90);
  font-size:12.5px;
}
.footer-link{
  padding:8px 10px;
  border-radius: 12px;
  border: 1px solid transparent;
}
.footer-link:hover{
  border-color: rgba(47,125,255,.25);
  background: rgba(47,125,255,.08);
  box-shadow: var(--glow);
}
.footer-dot{
  width:4px; height:4px; border-radius:50%;
  background: rgba(0,191,232,.85);
  box-shadow: var(--glow);
}

/* Responsive nav */
@media (max-width: 820px){
  .nav-toggle{ display:inline-flex; }

  .nav{
    position:absolute;
    right:20px;
    top:64px;
    flex-direction:column;
    align-items:stretch;
    width:min(340px, calc(100vw - 40px));
    padding:10px;
    border-radius: 18px;
    border: 1px solid rgba(184,215,255,.95);
    background: rgba(255,255,255,.92);
    box-shadow: var(--shadow2);
    display:none;
  }
  .nav.is-open{ display:flex; }

  .nav-link{ padding:12px 12px; }
}

/* Utility: code tags if needed */
code{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  background: rgba(47,125,255,.08);
  border: 1px solid rgba(184,215,255,.95);
  padding: 1px 6px;
  border-radius: 8px;
}