:root{
  --bg: #0b0f19;
  --panel: rgba(255,255,255,.06);
  --panel2: rgba(255,255,255,.09);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.68);
  --muted2: rgba(255,255,255,.50);
  --border: rgba(255,255,255,.10);
  --shadow: 0 20px 60px rgba(0,0,0,.40);
  --accent: #7c3aed;     /* purple */
  --accent2: #22c55e;    /* green  */
  --accent3: #fbbf24;    /* amber  */
  --radius: 18px;
  --radius2: 26px;
  --max: 1120px;
}

/* Light mode (auto) */
@media (prefers-color-scheme: light){
  :root{
    --bg: #f7f7fb;
    --panel: rgba(10,20,40,.05);
    --panel2: rgba(10,20,40,.07);
    --text: rgba(10,20,40,.92);
    --muted: rgba(10,20,40,.68);
    --muted2: rgba(10,20,40,.48);
    --border: rgba(10,20,40,.10);
    --shadow: 0 20px 60px rgba(10,20,40,.12);
  }
}

body {
  margin: 0;
  font: 16px/1.5 ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  
  background: 
    radial-gradient(ellipse 140% 90% at 10% 0%,   rgba(124,58,237,0.28), transparent 60%),
    radial-gradient(ellipse 120% 80% at 85% 15%,  rgba(34,197,94,0.22),  transparent 65%),
    radial-gradient(ellipse 160% 100% at 50% 110%, rgba(251,191,36,0.16), transparent 60%),
    var(--bg);
  
  background-attachment: fixed;   /* ← helps a lot on desktop */
  letter-spacing: -0.01em;
}


/**{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font: 16px/1.5 ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1000px 600px at 10% -10%, rgba(124,58,237,.35), transparent 60%),
              radial-gradient(900px 500px at 90% 0%, rgba(34,197,94,.25), transparent 55%),
              radial-gradient(1100px 700px at 50% 120%, rgba(251,191,36,.18), transparent 60%),
              var(--bg);
  letter-spacing: -0.01em;
}*/

a{color:inherit; text-decoration:none}
a:hover{opacity:.95}
.container{max-width:var(--max); margin:0 auto; padding:0 20px}
.pill{
  display:inline-flex; gap:8px; align-items:center;
  padding:8px 12px; border:1px solid var(--border);
  background: linear-gradient(180deg, var(--panel), transparent);
  border-radius: 999px;
  color: var(--muted);
  backdrop-filter: blur(10px);
}
.dot{width:8px; height:8px; border-radius:999px; background: var(--accent2); box-shadow:0 0 0 4px rgba(34,197,94,.18)}
.dot-purple{width:8px; height:8px; border-radius:999px; background: var(--accent); box-shadow:0 0 0 4px rgba(34,197,94,.18)}
/* Mobile hamburger */
.nav-inner { display:flex; align-items:center; gap: 14px; }
.navlinks { margin-left: auto; }   /* pushes links + CTA to the right of brand */
.nav-cta { display:flex; gap:10px; align-items:center; }
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--panel), transparent);
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 30px rgba(0,0,0,.12);
  cursor:pointer;
  align-items:center;
  justify-content:center;
  padding:0;
}

.nav-toggle:hover{ background: var(--panel2); }

.burger{
  width:20px;
  height:2px;
  background: rgba(255,255,255,.92);
  position:relative;
  border-radius:999px;
  display:block;
}
.burger::before,
.burger::after{
  content:"";
  position:absolute;
  left:0;
  width:20px;
  height:2px;
  background: rgba(255,255,255,.92);
  border-radius:999px;
  transition: transform .15s ease, top .15s ease, opacity .15s ease;
}
.burger::before{ top:-6px; }
.burger::after{ top:6px; }

/* Mobile menu panel */
.mobile-menu{
  margin: 10px 0 14px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--panel), transparent);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  overflow:hidden;
}

.mobile-links{
  display:flex;
  flex-direction:column;
  padding: 10px;
  gap: 6px;
}

.mobile-link{
  padding: 12px 12px;
  border-radius: 14px;
  color: var(--text);
  font-weight: 700;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.06);
}
.mobile-link:hover{ background: rgba(255,255,255,.07); }

.mobile-primary{
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  background: linear-gradient(135deg, rgba(124,58,237,.85), rgba(34,197,94,.55));
  color: #fff;
}

.mobile-divider{
  height:1px;
  background: var(--border);
  margin: 6px 6px;
}

/* Animate burger to X when expanded */
.nav-toggle[aria-expanded="true"] .burger{
  background: transparent;
}
.nav-toggle[aria-expanded="true"] .burger::before{
  top:0;
  transform: rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .burger::after{
  top:0;
  transform: rotate(-45deg);
}

.nav{
  position: sticky; top:0; z-index:10;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav-inner{display:flex; align-items:center; justify-content:space-between; padding:14px 0}
.brand{display:flex; align-items:center; gap:10px; font-weight:700; letter-spacing:-.02em}
.logo{
  width:34px; height:34px; border-radius: 12px;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,.35), transparent 55%),
              linear-gradient(135deg, var(--accent), #06b6d4);
  box-shadow: 0 12px 30px rgba(124,58,237,.25);
  border: 1px solid rgba(255,255,255,.18);
}
.navlinks{display:flex; align-items:center; gap:18px; color:var(--muted); font-weight:600}
.navlinks a{padding:10px 10px; border-radius: 12px}
.navlinks a:hover{background: var(--panel)}
.nav-cta{display:flex; gap:10px; align-items:center}
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  padding:12px 14px; border-radius: 14px;
  border:1px solid var(--border);
  background: linear-gradient(180deg, var(--panel), transparent);
  color: var(--text);
  font-weight:700;
  box-shadow: 0 10px 30px rgba(0,0,0,.12);
  transition: transform .12s ease, background .2s ease;
  white-space: nowrap;
}
.btn:hover{transform: translateY(-1px); background: var(--panel2)}
.btn-primary{
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  background: linear-gradient(135deg, rgba(124,58,237,.95), rgba(34,197,94,.65));
  color: white;
  box-shadow: 0 20px 60px rgba(124,58,237,.22);
}
.btn-ghost{background: transparent}
.hero{padding:48px 0 28px}
.hero-grid{
  display:grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 26px;
  align-items: center;
  padding: 26px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--panel), transparent);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  overflow:hidden;
  position: relative;
}
.hero-grid:before{
  content:"";
  position:absolute; inset:-2px;
  background: radial-gradient(800px 450px at 10% 10%, rgba(124,58,237,.30), transparent 60%),
              radial-gradient(700px 400px at 90% 10%, rgba(34,197,94,.18), transparent 55%);
  opacity:.75; pointer-events:none;
}
.hero-left, .hero-right{position:relative}
h1{
  margin: 16px 0 10px;
  font-size: clamp(34px, 4vw, 52px);
  line-height: 1.05;
  letter-spacing: -.03em;
}
.lead{
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 18px;
  max-width: 55ch;
}
.cta-row{display:flex; gap:12px; flex-wrap:wrap; margin-top: 16px}
.subrow{display:flex; gap:14px; align-items:center; margin-top: 14px; color: var(--muted2); font-weight:600}
.subrow a{color: var(--muted)}
.subrow a:hover{text-decoration: underline}
.avatar-card{
  display:flex; gap:14px; align-items:center;
  padding: 14px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  border-radius: 18px;
  margin-top: 18px;
  max-width: 520px;
}
.avatar{
  width:54px; height:54px; border-radius: 16px;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,.35), transparent 55%),
              linear-gradient(135deg, #111827, #334155);
  border: 1px solid rgba(255,255,255,.16);
  box-shadow: 0 16px 40px rgba(0,0,0,.28);
}
.avatar h3{margin:0; font-size: 15px}
.avatar p{margin:2px 0 0; color: var(--muted); font-size: 13px}

.illus{
  width:100%;
  aspect-ratio: 1 / 1;
  border-radius: 26px;
  border: 1px solid var(--border);
  background:
    radial-gradient(circle at 20% 30%, rgba(251,191,36,.35), transparent 55%),
    radial-gradient(circle at 70% 25%, rgba(34,197,94,.25), transparent 58%),
    radial-gradient(circle at 65% 75%, rgba(124,58,237,.25), transparent 60%),
    linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.03));
  box-shadow: 0 24px 70px rgba(0,0,0,.25);
  position: relative;
  overflow:hidden;
}
.illus:after{
  content:"";
  position:absolute; inset:0;
  background-image:
    radial-gradient(rgba(255,255,255,.22) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity:.30;
  mask-image: radial-gradient(circle at 50% 40%, black 40%, transparent 70%);
}
.illus-badge{
  position:absolute; left:14px; bottom:14px;
  padding:10px 12px;
  border-radius: 14px;
  background: rgba(0,0,0,.20);
  border: 1px solid rgba(255,255,255,.16);
  color: rgba(255,255,255,.92);
  font-weight:700;
  backdrop-filter: blur(10px);
}

.section{padding: 22px 0}
.section h2{
  margin:0 0 10px;
  font-size: clamp(22px, 2.4vw, 30px);
  letter-spacing: -.02em;
}
.section p{margin: 0; color: var(--muted)}
.grid-3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 16px;
}
.card{
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--panel), transparent);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: 0 12px 40px rgba(0,0,0,.14);
}
.card:hover{background: linear-gradient(180deg, var(--panel2), transparent)}
.kicker{
  display:flex; gap:10px; align-items:center;
  color: var(--muted2);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: 11px;
}
.icon{
  width:34px; height:34px; border-radius: 14px;
  display:grid; place-items:center;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.06);
}
.card h3{margin: 10px 0 6px; font-size: 18px}
.card p{margin:0; color: var(--muted)}
.card a{display:inline-flex; margin-top: 12px; font-weight: 800; color: color-mix(in srgb, var(--text) 85%, var(--accent));}

.split{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 16px;
}
.video{
  border-radius: var(--radius2);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,.10), rgba(255,255,255,.03));
  aspect-ratio: 16 / 9;
  position: relative;
  overflow:hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,.18);
}
.play{
  position:absolute; inset:0;
  display:grid; place-items:center;
}
.playbtn{
  width:78px; height:78px; border-radius: 26px;
  background: linear-gradient(135deg, rgba(124,58,237,.95), rgba(34,197,94,.70));
  box-shadow: 0 24px 70px rgba(124,58,237,.26);
  border: 1px solid rgba(255,255,255,.22);
  display:grid; place-items:center;
}
.triangle{
  width:0; height:0;
  border-left: 18px solid rgba(255,255,255,.95);
  border-top: 12px solid transparent;
  border-bottom: 12px solid transparent;
  margin-left: 4px;
}

.list{
  display:flex; flex-direction:column; gap:10px; margin-top: 10px;
}
.post{
  display:flex; justify-content:space-between; gap:12px; align-items:flex-start;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
}
.post:hover{background: rgba(255,255,255,.06)}
.post .meta{color: var(--text); font-weight:600; font-size: 16px; text-transform: uppercase; letter-spacing:.06em}
.post .title{font-weight: 900; letter-spacing:-.01em}
.post .text{color: var(--text); font-weight: 300; letter-spacing: .04em; line-height: 30px;}
.post .button{color: var(--text); font-weight: 300; letter-spacing: .04em; line-height: 30px;}
.tag{
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--muted);
  font-weight: 800;
  font-size: 12px;
  white-space: nowrap;
}

.courses{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 16px;
}
.course{
  padding: 16px;
  border-radius: var(--radius2);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,.08), transparent);
  box-shadow: 0 16px 50px rgba(0,0,0,.14);
  position: relative;
  overflow:hidden;
}
.course:before{
  content:"";
  position:absolute; inset:-1px;
  background: radial-gradient(250px 180px at 20% 20%, rgba(124,58,237,.25), transparent 60%),
              radial-gradient(280px 220px at 80% 30%, rgba(34,197,94,.18), transparent 60%);
  opacity:.75;
  pointer-events:none;
}
.course > *{position:relative}
.course h3{margin: 10px 0 6px; font-size: 18px}
.course p{margin:0; color: var(--muted)}
.course .badge{
  display:inline-flex; gap:8px; align-items:center;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.06);
  color: var(--muted);
  font-weight: 900;
  font-size: 12px;
}
.course a{display:inline-flex; margin-top: 12px; font-weight: 900}

.cta-panel{
  margin-top: 16px;
  border-radius: var(--radius2);
  border: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(124,58,237,.18), rgba(34,197,94,.10));
  padding: 18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 14px;
}
.cta-panel h3{margin:0 0 4px; font-size: 18px}
.cta-panel p{margin:0; color: var(--muted)}
form.newsletter{display:flex; gap:10px; flex-wrap:wrap}
input{
  background: rgba(255,255,255,.06);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 12px;
  color: var(--text);
  min-width: 220px;
  outline: none;
}
input::placeholder{color: var(--muted2)}
input:focus{border-color: color-mix(in srgb, var(--accent) 45%, var(--border))}
.footer{
  padding: 42px 0;
  border-top: 1px solid var(--border);
  color: var(--muted);
}
.footer-grid{
  display:grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 14px;
}
.footer h4{margin:0 0 10px; color: var(--text)}
.footer a{color: var(--muted)}
.footer a:hover{color: var(--text); text-decoration: underline}
.small{color: var(--muted2); font-size: 13px; margin-top: 16px}

/* Responsive */
@media (max-width: 960px){
  .hero-grid{grid-template-columns: 1fr; gap: 16px}
  .grid-3{grid-template-columns: 1fr}
  .split{grid-template-columns: 1fr}
  .courses{grid-template-columns: repeat(2, 1fr)}
  .navlinks{display:none}
  .cta-panel{flex-direction: column; align-items:stretch}
  form.newsletter{width:100%}
  input{flex: 1}
  .nav-toggle{ display:inline-flex; }
  .navlinks{ display:none; }
}
@media (max-width: 520px){
  .courses{grid-template-columns: 1fr}
  .btn{width: 100%}
  .nav-cta{width: 100%}
}