:root{
  --bg:#0b1020;
  --card:#111a33;
  --card2:#0f1730;
  --text:#eaf0ff;
  --muted:#b8c3e6;
  --line:rgba(255,255,255,.10);
  --accent:#7c5cff;
  --accent2:#18d2a5;
  --warn:#ffcc66;
  --shadow:0 18px 50px rgba(0,0,0,.35);
  --radius:20px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  background: radial-gradient(1200px 600px at 25% 10%, rgba(124,92,255,.22), transparent 60%),
              radial-gradient(900px 500px at 85% 0%, rgba(24,210,165,.18), transparent 60%),
              var(--bg);
  color:var(--text);
  line-height:1.55;
}
a{color:inherit;text-decoration:none}
.container{width:min(1100px, 92%); margin:0 auto}

.nav{
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(14px);
  background: rgba(11,16,32,.72);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 0;
}
.brand{
  display:flex; align-items:center; gap:10px; font-weight:750;
  letter-spacing:.2px;
}
.logo{
  width:34px;height:34px;border-radius:12px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 10px 30px rgba(124,92,255,.25);
}
.nav-links{display:flex; gap:14px; flex-wrap:wrap}
.nav-links a{
  padding:9px 12px; border-radius:12px;
  color:var(--muted);
}
.nav-links a:hover{
  background: rgba(255,255,255,.06);
  color:var(--text);
}

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap:10px; padding:12px 16px;
  border-radius:14px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.06);
  color:var(--text);
  cursor:pointer;
  transition: transform .06s ease, background .2s ease;
}
.btn:hover{background: rgba(255,255,255,.10)}
.btn:active{transform: translateY(1px)}
.btn.primary{
  border:none;
  background: linear-gradient(135deg, var(--accent), #5b9bff);
  box-shadow: 0 16px 40px rgba(124,92,255,.25);
}
.btn.ghost{
  background: transparent;
}
.badge{
  display:inline-flex; align-items:center; gap:8px;
  padding:7px 10px; border-radius:999px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.06);
  color:var(--muted);
  font-size:13px;
}
.hero{
  padding:56px 0 26px;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.25fr .75fr;
  gap:18px;
  align-items:stretch;
}
@media (max-width: 880px){
  .hero-grid{grid-template-columns:1fr}
}
.card{
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border:1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.hero-left{padding:26px}
.hero-right{padding:22px; background: linear-gradient(180deg, rgba(24,210,165,.10), rgba(255,255,255,.02));}
.h1{
  font-size: clamp(30px, 4vw, 46px);
  line-height:1.1;
  margin:10px 0 10px;
}
.p{color:var(--muted); margin:0 0 18px}
.kpis{
  display:grid; grid-template-columns: repeat(3, 1fr);
  gap:10px; margin-top:16px;
}
@media (max-width:560px){.kpis{grid-template-columns:1fr}}
.kpi{
  padding:14px; border-radius:18px;
  border:1px solid var(--line);
  background: rgba(0,0,0,.10);
}
.kpi b{display:block; font-size:18px}
.kpi span{color:var(--muted); font-size:13px}

.section{padding:26px 0}
.section h2{margin:0 0 12px; font-size:24px}
.section p.lead{margin:0 0 18px; color:var(--muted)}
.grid3{display:grid; grid-template-columns:repeat(3,1fr); gap:12px}
.grid2{display:grid; grid-template-columns:repeat(2,1fr); gap:12px}
@media (max-width:880px){.grid3,.grid2{grid-template-columns:1fr}}
.tile{padding:18px}
.tile h3{margin:0 0 8px; font-size:16px}
.tile p{margin:0;color:var(--muted)}
.hr{height:1px; background:var(--line); margin:18px 0}

.course-card{
  padding:18px;
  display:flex; flex-direction:column; gap:10px;
}
.course-top{display:flex; align-items:flex-start; justify-content:space-between; gap:10px}
.price{
  font-weight:800;
  font-size:18px;
  padding:8px 10px;
  border-radius:12px;
  background: rgba(124,92,255,.16);
  border:1px solid rgba(124,92,255,.28);
}
.stars{color: var(--warn); font-size:14px}
.small{font-size:13px; color:var(--muted)}
.course-actions{display:flex; gap:10px; flex-wrap:wrap; margin-top:6px}
.note{
  font-size:13px;
  color: var(--muted);
  border-left:3px solid rgba(24,210,165,.65);
  padding-left:10px;
}

.footer{
  padding:26px 0 34px;
  border-top:1px solid var(--line);
  margin-top:26px;
  color: var(--muted);
}
.footer-grid{
  display:grid; grid-template-columns: 1.2fr .8fr; gap:18px;
}
@media(max-width:880px){.footer-grid{grid-template-columns:1fr}}
.footer a{color:var(--muted)}
.footer a:hover{color:var(--text)}
.footer-links{display:flex; gap:12px; flex-wrap:wrap}
.disclaimer{
  font-size:12px;
  color: rgba(184,195,230,.85);
  margin-top:10px;
}

/* Modal */
.modal-backdrop{
  position:fixed; inset:0; z-index:999;
  background: rgba(0,0,0,.55);
  display:none;
  align-items:center; justify-content:center;
  padding:18px;
}
.modal{
  width:min(720px, 96%);
  border-radius:22px;
  border:1px solid var(--line);
  background: linear-gradient(180deg, rgba(17,26,51,.95), rgba(15,23,48,.95));
  box-shadow: var(--shadow);
  overflow:hidden;
}
.modal-head{
  padding:16px 18px;
  display:flex; align-items:center; justify-content:space-between;
  border-bottom:1px solid var(--line);
}
.modal-body{padding:18px}
.modal h3{margin:0; font-size:18px}
.close{background:transparent;border:none;color:var(--muted);font-size:22px;cursor:pointer}
.form{
  display:grid; gap:10px;
}
.input{
  width:100%;
  padding:12px 14px;
  border-radius:14px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.06);
  color: var(--text);
  outline:none;
}
.input::placeholder{color: rgba(184,195,230,.65)}
.form-row{display:flex; gap:10px; flex-wrap:wrap}
.form-row > *{flex:1}
.toast{
  display:none;
  margin-top:12px;
  padding:12px 14px;
  border-radius:14px;
  border:1px solid rgba(24,210,165,.35);
  background: rgba(24,210,165,.10);
  color: var(--text);
}