:root{
  --bg:#0b1220;
  --panel:#0f1a2e;
  --card:#0f1a2e;
  --text:#eaf0ff;
  --muted:#a9b6d3;
  --line:rgba(255,255,255,.08);
  --brand:#7c5cff;
  --brand2:#2dd4bf;
  --shadow: 0 18px 50px rgba(0,0,0,.35);
  --radius: 16px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background: radial-gradient(1200px 800px at 20% 0%, rgba(124,92,255,.25), transparent 50%),
              radial-gradient(1000px 700px at 80% 10%, rgba(45,212,191,.18), transparent 55%),
              var(--bg);
  color:var(--text);
}
a{color:inherit;text-decoration:none}
.link{color:rgba(124,92,255,.95);text-decoration:underline;text-underline-offset:3px}
.link:hover{filter:brightness(1.1)}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
.topbar{
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(14px);
  background: rgba(11,18,32,.6);
  border-bottom:1px solid var(--line);
}
.topbar > .container{display:flex;align-items:center;gap:16px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  background: linear-gradient(135deg, var(--brand), var(--brand2));
  color:#06101c;
}
.brand-name{letter-spacing:.2px}
.nav{display:flex;gap:14px;margin-left:8px}
.nav-link{padding:10px 12px;border-radius:12px;color:var(--muted)}
.nav-link:hover{background:rgba(255,255,255,.06);color:var(--text)}
.nav-link.is-active{background:rgba(124,92,255,.18);color:var(--text);border:1px solid rgba(124,92,255,.22)}
.topbar-actions{margin-left:auto;display:flex;gap:10px}
.icon-btn{display:none;margin-left:auto;background:transparent;border:1px solid var(--line);border-radius:12px;color:var(--text);height:42px;width:42px}
.icon-bars{display:block;width:18px;height:12px;border-top:2px solid var(--text);border-bottom:2px solid var(--text);position:relative;margin:0 auto}
.icon-bars:before{content:"";position:absolute;left:0;right:0;top:4px;border-top:2px solid var(--text)}
.mobile-nav{border-top:1px solid var(--line);padding:14px 20px;display:none}
.mobile-link{display:block;padding:12px 12px;border-radius:12px;color:var(--muted)}
.mobile-link:hover{background:rgba(255,255,255,.06);color:var(--text)}
.mobile-actions{display:flex;gap:10px;padding-top:10px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  gap:8px;
  padding:10px 14px;border-radius:12px;
  border:1px solid var(--line);
  font-weight:600;
}
.label{display:block;font-weight:700;margin:0 0 8px}
.input{
  width:100%;
  padding:12px 12px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--text);
  outline:none;
}
.input:focus{border-color:rgba(124,92,255,.4);box-shadow:0 0 0 4px rgba(124,92,255,.12)}
.btn-lg{padding:12px 16px;border-radius:14px}
.btn-primary{
  background: linear-gradient(135deg, rgba(124,92,255,.95), rgba(45,212,191,.95));
  border-color: transparent;
  color:#06101c;
  box-shadow: 0 12px 30px rgba(124,92,255,.22);
}
.btn-primary:hover{filter:brightness(1.02)}
.btn-secondary{background:rgba(255,255,255,.06)}
.btn-ghost{background:transparent}
.w-100{width:100%}
.center{text-align:center}
.mt-12{margin-top:12px}
.mt-16{margin-top:16px}
.mt-24{margin-top:24px}
.hero{padding:56px 0 18px}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:start}
.badge{
  display:inline-flex;gap:8px;align-items:center;
  padding:8px 12px;border-radius:999px;
  background:rgba(255,255,255,.06);
  border:1px solid var(--line);
  color:var(--muted);
  font-size:13px;
}
.h1{font-size:44px;line-height:1.05;margin:14px 0 10px}
.h2{font-size:28px;margin:0}
.lead{font-size:18px;line-height:1.55;color:var(--muted);max-width:58ch}
.hero-actions{display:flex;gap:12px;margin-top:18px;flex-wrap:wrap}
.hero-stats{display:flex;gap:18px;margin-top:22px}
.stat{padding:12px 14px;border-radius:14px;border:1px solid var(--line);background:rgba(255,255,255,.03)}
.stat-num{font-weight:800}
.stat-label{color:var(--muted);font-size:13px}
.card{
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border:1px solid var(--line);
  border-radius: var(--radius);
  padding:18px;
  box-shadow: var(--shadow);
}
.alert{padding:12px 14px;border-radius:14px;border:1px solid var(--line);background:rgba(255,255,255,.04);margin:0 0 14px}
.alert-error{border-color:rgba(239,68,68,.35);background:rgba(239,68,68,.12)}
.alert-success{border-color:rgba(34,197,94,.3);background:rgba(34,197,94,.12)}
.card-title{font-weight:800;margin-bottom:6px}
.card-subtitle{color:var(--muted);font-size:14px;margin-bottom:14px}
.timeline{display:flex;flex-direction:column;gap:12px;margin:14px 0}
.step{display:flex;gap:12px;align-items:flex-start}
.step-dot{width:10px;height:10px;border-radius:999px;background:rgba(124,92,255,.9);margin-top:6px;box-shadow:0 0 0 4px rgba(124,92,255,.15)}
.step-title{font-weight:700}
.muted{color:var(--muted)}
.section{padding:40px 0}
.section-alt{background:rgba(255,255,255,.02);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.feature{padding:18px;border-radius:var(--radius);border:1px solid var(--line);background:rgba(255,255,255,.03)}
.feature-icon{font-size:22px}
.feature-title{font-weight:800;margin:8px 0 6px}
.quote{padding:18px;border-radius:var(--radius);border:1px solid var(--line);background:rgba(255,255,255,.03)}
.quote-text{font-weight:600;line-height:1.45}
.quote-meta{margin-top:10px;color:var(--muted);font-size:14px}
.teacher-card{
  display:flex;flex-direction:column;gap:14px;
  padding:18px;border-radius:var(--radius);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
}
.table{display:flex;flex-direction:column;gap:10px;margin-top:12px}
.row{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:14px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.02)}
.row-actions{display:flex;gap:10px;align-items:center}
.avatar{
  width:44px;height:44px;border-radius:14px;
  display:grid;place-items:center;font-weight:900;
  background:linear-gradient(135deg, rgba(124,92,255,.7), rgba(45,212,191,.55));
  color:#06101c;
}
.avatar-lg{width:64px;height:64px;border-radius:18px;font-size:20px}
.teacher-name{font-weight:900}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.chip{font-size:12px;color:var(--muted);padding:6px 10px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.03)}
.profile-head{display:flex;align-items:center;gap:14px}
.content{max-width:860px}
.list{margin:12px 0 0;padding-left:18px;color:var(--muted);line-height:1.65}
.footer{padding:36px 0;border-top:1px solid var(--line);background:rgba(11,18,32,.55)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:14px}
.footer-title{font-weight:800;margin-bottom:10px}
.footer-link{display:block;color:var(--muted);padding:6px 0}
.footer-link:hover{color:var(--text)}
.footer-bottom{margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.brand-footer{margin-bottom:10px}

@media (max-width: 940px){
  .hero-grid{grid-template-columns:1fr}
  .grid3{grid-template-columns:1fr}
  .grid2{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width: 760px){
  .nav{display:none}
  .topbar-actions{display:none}
  .icon-btn{display:inline-flex}
  .mobile-nav{display:block}
  .h1{font-size:38px}
  .hero-stats{flex-direction:column}
  .footer-grid{grid-template-columns:1fr}
}