:root{
  --bg0:#04060b;
  --bg1:#070b12;

  --glass: rgba(255,255,255,0.06);
  --glass2: rgba(255,255,255,0.045);
  --border: rgba(255,255,255,0.12);

  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.68);
  --faint: rgba(255,255,255,0.50);

  --brand:#2aa3ff;
  --brand2:#67e8f9;
  --ok:#66ff9a;
  --warn:#ffcc66;

  --shadow: 0 20px 80px rgba(0,0,0,0.60);
  --shadow2: 0 18px 50px rgba(0,0,0,0.40);
  --radius: 22px;
  --maxw: 1180px;

  --ease: cubic-bezier(.2,.8,.2,1);
}

*{ box-sizing:border-box; }
html, body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 900px at 20% 10%, rgba(42,163,255,0.14), transparent 55%),
    radial-gradient(900px 700px at 85% 25%, rgba(103,232,249,0.10), transparent 58%),
    radial-gradient(800px 800px at 45% 80%, rgba(42,163,255,0.10), transparent 62%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
  overflow-x:hidden;
}

/* Page fade */
body{
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 500ms var(--ease), transform 600ms var(--ease);
}
body.loaded{
  opacity: 1;
  transform: translateY(0);
}

/* Ambient layers */
.bgfx{
  position: fixed;
  inset: -10%;
  z-index: -10;
  pointer-events:none;
  filter: blur(24px);
  opacity: 0.70;
  background:
    radial-gradient(circle at 22% 18%, rgba(42,163,255,0.30), transparent 45%),
    radial-gradient(circle at 84% 30%, rgba(103,232,249,0.22), transparent 45%),
    radial-gradient(circle at 46% 82%, rgba(42,163,255,0.18), transparent 55%);
  animation: drift 18s ease-in-out infinite alternate;
}
@keyframes drift{
  0%{ transform: translate3d(-1%, -1%, 0) scale(1.02); }
  50%{ transform: translate3d(1.8%, 1.1%, 0) scale(1.05); }
  100%{ transform: translate3d(-0.6%, 2.0%, 0) scale(1.04); }
}

.grain{
  position: fixed; inset:0; z-index:-9; pointer-events:none;
  opacity:0.08; mix-blend-mode: overlay;
  background-image:
    repeating-linear-gradient(0deg,
      rgba(255,255,255,0.10) 0px,
      rgba(255,255,255,0.10) 1px,
      rgba(0,0,0,0.10) 2px,
      rgba(0,0,0,0.10) 3px),
    repeating-linear-gradient(90deg,
      rgba(255,255,255,0.08) 0px,
      rgba(255,255,255,0.08) 1px,
      rgba(0,0,0,0.08) 2px,
      rgba(0,0,0,0.08) 3px);
  animation: grainShift 7s steps(10) infinite;
}
@keyframes grainShift{
  0%{ transform: translate(0,0); }
  20%{ transform: translate(-1%, 1%); }
  40%{ transform: translate(1%, -1%); }
  60%{ transform: translate(2%, 1%); }
  80%{ transform: translate(-2%, -1%); }
  100%{ transform: translate(0,0); }
}

/* Cursor glow */
.cursorGlow{
  position: fixed;
  width: 520px;
  height: 520px;
  left: 0; top: 0;
  transform: translate(-50%,-50%);
  pointer-events:none;
  z-index: -8;
  background: radial-gradient(circle,
    rgba(42,163,255,0.18),
    rgba(103,232,249,0.08) 35%,
    transparent 62%);
  filter: blur(8px);
  opacity: 0.75;
  transition: opacity 300ms var(--ease);
}

/* Layout */
.wrap{
  width: min(var(--maxw), 94vw);
  margin: 0 auto;
  padding: 18px 0 70px;
}

/* Top bar */
.topbar{
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(0,0,0,0.22);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 16px;
  box-shadow: var(--shadow2);
  margin: 14px auto 14px;
  overflow:hidden;
}
.topbar .inner{
  display:flex;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  padding: 10px 14px;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.2px;
  align-items:center;
}

/* Header/Nav */
header{
  position: sticky;
  top: 12px;
  z-index: 20;
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 14px;
  padding: 14px 14px;
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow2);
}

.brand{
  display:flex;
  align-items:center;
  gap: 12px;
  min-width: 240px;
}
.logo{
  width: 42px;
  height: 42px;
  border-radius: 16px;
  background:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,0.28), transparent 55%),
    linear-gradient(135deg, rgba(42,163,255,1), rgba(103,232,249,0.92));
  box-shadow: 0 18px 46px rgba(42,163,255,0.25);
  border: 1px solid rgba(255,255,255,0.14);
  position:relative;
  overflow:hidden;
}
.logo::after{
  content:"";
  position:absolute; inset:-40%;
  background: linear-gradient(120deg, transparent 40%, rgba(255,255,255,0.18), transparent 60%);
  transform: rotate(20deg);
  animation: shine 4.5s ease-in-out infinite;
}
@keyframes shine{
  0%{ transform: translateX(-30%) rotate(20deg); opacity:0; }
  35%{ opacity:1; }
  60%{ opacity:0.8; }
  100%{ transform: translateX(30%) rotate(20deg); opacity:0; }
}

.brand h1{ margin:0; font-size: 15px; letter-spacing: 0.4px; font-weight: 650; }
.brand p{ margin:2px 0 0; font-size: 12px; color: var(--muted); letter-spacing: 0.2px; }

nav ul{
  list-style:none; margin:0; padding:0;
  display:flex; gap: 10px; flex-wrap:wrap; justify-content:center;
}
nav a{
  color: rgba(255,255,255,0.84);
  text-decoration:none;
  font-size: 13px;
  padding: 9px 10px;
  border-radius: 12px;
  border: 1px solid transparent;
  transition: 180ms var(--ease);
}
nav a:hover{
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.10);
}
nav a.active{
  background: rgba(42,163,255,0.14);
  border-color: rgba(42,163,255,0.35);
  color: rgba(255,255,255,0.94);
}

.cta{
  display:flex;
  gap:10px;
  align-items:center;
  flex-wrap:wrap;
  justify-content:flex-end;
  min-width: 240px;
}

.pill{
  display:inline-flex;
  gap:8px;
  align-items:center;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(0,0,0,0.18);
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.35px;
  text-transform: uppercase;
}
.dot{
  width: 8px; height:8px; border-radius: 999px;
  background: rgba(102,255,154,0.92);
  box-shadow: 0 0 12px rgba(102,255,154,0.25);
}

/* Buttons */
.btn{
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(0,0,0,0.18);
  padding: 10px 12px;
  border-radius: 14px;
  cursor:pointer;
  font-size: 13px;
  text-decoration:none;
  color: rgba(255,255,255,0.88);
  transition: transform 180ms var(--ease), box-shadow 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
  box-shadow: 0 12px 30px rgba(0,0,0,0.25);
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.btn:hover{
  transform: translateY(-1px);
  background: rgba(255,255,255,0.06);
  box-shadow: 0 0 0 3px rgba(42,163,255,0.10), 0 18px 50px rgba(0,0,0,0.35);
  border-color: rgba(42,163,255,0.35);
}
.btn:active{ transform: translateY(0px); }

.btn.primary{
  background: linear-gradient(135deg, rgba(42,163,255,1), rgba(103,232,249,0.92));
  color: rgba(5,7,12,0.96);
  border-color: transparent;
  box-shadow: 0 22px 60px rgba(42,163,255,0.26);
  font-weight: 700;
}

/* Cards */
.card{
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
  overflow:hidden;
  position:relative;
}
.cardInner{ position:relative; padding: 20px; }

/* Subtle edge glow */
.card::before{
  content:"";
  position:absolute; inset:0;
  background: radial-gradient(900px 500px at var(--mx, 50%) var(--my, 30%),
    rgba(42,163,255,0.16),
    transparent 55%);
  opacity: 0;
  transition: opacity 220ms var(--ease);
  pointer-events:none;
}
.card:hover::before{ opacity: 1; }

/* Page hero layout */
.pageHero{
  margin-top: 14px;
  display:grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 16px;
  align-items:stretch;
}
@media (max-width: 980px){
  .pageHero{ grid-template-columns: 1fr; }
}

.heroTitle{
  margin: 12px 0 10px;
  font-size: clamp(28px, 3.1vw, 48px);
  line-height: 1.02;
  letter-spacing: 0.2px;
}
.heroText{
  margin:0;
  color: var(--muted);
  line-height: 1.65;
  font-size: 15px;
  max-width: 74ch;
}

/* “Diagram” panel */
.diagram{
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(0,0,0,0.20);
  padding: 16px;
  overflow:hidden;
  position:relative;
}
.diagramTitle{
  font-size: 12px;
  letter-spacing: 0.65px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.76);
  margin: 0 0 10px;
}
.diagramBody{
  color: rgba(255,255,255,0.70);
  font-size: 13px;
  line-height: 1.55;
}
.diagramGrid{
  margin-top: 12px;
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.kv{
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.04);
  padding: 12px;
}
.kv .k{
  font-size: 11px;
  letter-spacing: 0.65px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.62);
}
.kv .v{
  margin-top: 6px;
  font-size: 15px;
  font-weight: 700;
  color: rgba(255,255,255,0.88);
}

/* Steps/timeline */
.steps{
  display:grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
  margin-top: 12px;
}
@media (max-width: 980px){
  .steps{ grid-template-columns: 1fr; }
}
.step{
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.045);
  padding: 14px;
  position:relative;
  overflow:hidden;
}
.step .n{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width: 26px; height: 26px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(0,0,0,0.18);
  font-weight: 800;
  margin-bottom: 10px;
}
.step h3{ margin:0 0 6px; font-size: 14px; letter-spacing: 0.2px; }
.step p{ margin:0; color: var(--muted); font-size: 13px; line-height: 1.5; }

/* Grids */
.sectionHead{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap: 14px;
  flex-wrap:wrap;
  margin: 18px 0 10px;
}
.sectionHead h2{
  margin:0;
  font-size: 16px;
  letter-spacing: 0.9px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.86);
}
.sectionHead p{
  margin:0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
  max-width: 75ch;
}

.grid3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 12px;
}
@media (max-width: 980px){
  .grid3{ grid-template-columns: 1fr; }
}
.mini{
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.045);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow2);
  padding: 16px;
  position:relative;
  overflow:hidden;
}
.mini h3{ margin: 0 0 8px; font-size: 15px; letter-spacing: 0.2px; }
.mini p{ margin:0; color: var(--muted); font-size: 14px; line-height: 1.55; }

.callout{
  margin-top: 12px;
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(0,0,0,0.20);
  padding: 14px 16px;
  color: rgba(255,255,255,0.78);
  font-size: 13px;
  line-height: 1.55;
}
.callout strong{ color: rgba(255,255,255,0.92); }
.warn{ color: rgba(255,204,102,0.95); }

/* Reveal */
.reveal{
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
  will-change: opacity, transform;
}
.reveal.show{ opacity: 1; transform: translateY(0); }

/* Footer */
footer{
  margin-top: 18px;
  padding: 22px 0 10px;
  color: rgba(255,255,255,0.55);
  font-size: 13px;
  text-align:center;
}
#footerDot{
  display:inline-block;
  width:8px; height:8px;
  margin-left:10px;
  border-radius:999px;
  background:rgba(255,255,255,0.22);
  vertical-align:middle;
}
#footerHint{
  display:inline-block;
  margin-left:10px;
  opacity:0;
  transform:translateY(6px);
  transition: 350ms var(--ease);
  color:rgba(255,255,255,0.55);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  .bgfx, .grain, .logo::after{ animation:none !important; }
  .reveal{ opacity:1 !important; transform:none !important; transition:none !important; }
  .btn{ transition:none !important; }
  body{ transition:none !important; opacity:1 !important; transform:none !important; }
  .cursorGlow{ display:none !important; }
}