:root{
  --bg:#06111f;
  --bg2:#0b1f3a;
  --card:rgba(255,255,255,0.08);
  --card2:rgba(255,255,255,0.12);
  --text:#f8fafc;
  --muted:#cbd5e1;
  --gold:#fcd116;
  --red:#ce1126;
  --blue:#0038a8;
  --shadow:0 20px 60px rgba(0,0,0,.35);
  --border:1px solid rgba(255,255,255,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(252,209,22,.14), transparent 20%),
    radial-gradient(circle at bottom right, rgba(206,17,38,.12), transparent 22%),
    linear-gradient(135deg, #06111f 0%, #081423 38%, #0b1f3a 100%);
  color:var(--text);
  line-height:1.65;
  overflow-x:hidden;
}
a{color:inherit}
.container{width:min(1180px, calc(100% - 32px)); margin:0 auto}
.nav{
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(18px);
  background: rgba(6,17,31,.72);
  border-bottom: var(--border);
}
.nav-inner{display:flex; align-items:center; justify-content:space-between; gap:16px; padding:14px 0}
.brand{display:flex; align-items:center; gap:14px; text-decoration:none}
.brand-mark{
  width:48px; height:48px; border-radius:16px;
  background: linear-gradient(135deg, var(--blue), var(--red) 55%, var(--gold));
  box-shadow: 0 0 30px rgba(252,209,22,.25);
}
.brand-title{font-size:1.35rem; font-weight:900; letter-spacing:.2px}
.brand-sub{font-size:.85rem; color:var(--muted)}
.nav-links{display:flex; flex-wrap:wrap; gap:12px; align-items:center}
.nav-links a{
  text-decoration:none; color:var(--muted); font-weight:600; font-size:.94rem;
  padding:10px 12px; border-radius:12px; transition:.25s ease;
}
.nav-links a:hover,.nav-links a.active{background:rgba(255,255,255,.08); color:#fff}
.cta{
  text-decoration:none; display:inline-flex; align-items:center; justify-content:center; gap:10px;
  background:linear-gradient(135deg, var(--gold), #ffe56e);
  color:#111827 !important; font-weight:900; padding:14px 18px; border-radius:16px;
  box-shadow: 0 16px 40px rgba(252,209,22,.18);
  transition: transform .2s ease, box-shadow .2s ease;
  text-align:center;
}
.cta:hover{transform:translateY(-2px); box-shadow:0 22px 52px rgba(252,209,22,.24)}
.hero{
  position:relative; padding:72px 0 34px;
}
.hero-grid{
  display:grid; grid-template-columns: 1.15fr .85fr; gap:28px; align-items:center;
}
.badge{
  display:inline-flex; align-items:center; gap:10px; padding:10px 14px; border-radius:999px;
  background:rgba(255,255,255,.08); border:var(--border); color:#fff; font-weight:700; font-size:.92rem;
}
h1,h2,h3{line-height:1.08; margin:0}
h1{font-size:clamp(2.5rem, 5vw, 5.3rem); margin:18px 0 18px; letter-spacing:-.03em}
h2{font-size:clamp(2rem, 3vw, 3.2rem); margin-bottom:16px; letter-spacing:-.02em}
h3{font-size:1.35rem; margin-bottom:10px}
.lead{font-size:1.08rem; color:var(--muted); max-width:64ch}
.accent{color:var(--gold)}
.hero-panel, .card, .lesson, .quote, .step, .quiz{
  background:var(--card); border:var(--border); box-shadow:var(--shadow); backdrop-filter:blur(16px);
}
.hero-panel{border-radius:32px; padding:24px}
.panel-top{display:flex; justify-content:space-between; gap:16px; align-items:flex-start}
.metric-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:14px; margin-top:18px}
.metric{
  background:rgba(255,255,255,.06); border-radius:20px; padding:18px; text-align:center;
}
.metric .num{font-size:1.8rem; font-weight:900; color:var(--gold)}
.hero-points{
  display:grid; gap:12px; margin-top:18px
}
.point{
  display:flex; gap:12px; align-items:flex-start; padding:14px; border-radius:18px;
  background:rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.08)
}
.point b{display:block; margin-bottom:2px}
.grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:18px}
.grid-2{display:grid; grid-template-columns:repeat(2,1fr); gap:18px}
.section{padding:32px 0}
.section-head{display:flex; justify-content:space-between; gap:18px; align-items:flex-end; margin-bottom:18px}
.section-head p{max-width:70ch; color:var(--muted); margin:0}
.card, .lesson, .quote, .step, .quiz{
  border-radius:28px; padding:24px;
}
.lesson:hover{transform:translateY(-4px)}
.lesson{
  transition:.25s ease; height:100%;
}
.pill{
  display:inline-flex; align-items:center; gap:8px; border-radius:999px; padding:8px 12px; margin-bottom:14px;
  background:rgba(255,255,255,.08); color:#fff; font-size:.86rem; font-weight:700
}
ul.clean{padding-left:18px; margin:10px 0 0}
ul.clean li{margin:8px 0; color:var(--muted)}
.table{
  width:100%; border-collapse:collapse; overflow:hidden; border-radius:20px; background:rgba(255,255,255,.04)
}
.table th,.table td{
  border-bottom:1px solid rgba(255,255,255,.08); padding:14px 16px; text-align:left; vertical-align:top
}
.table th{color:#fff; background:rgba(255,255,255,.06)}
.kbd{
  display:inline-block; padding:3px 8px; border-radius:8px; background:rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.1)
}
.cta-band{
  margin:38px 0 10px;
  background: linear-gradient(135deg, rgba(252,209,22,.14), rgba(206,17,38,.12), rgba(0,56,168,.12));
  border:1px solid rgba(255,255,255,.12);
  border-radius:34px; padding:28px;
}
.cta-band-inner{display:flex; align-items:center; justify-content:space-between; gap:18px; flex-wrap:wrap}
.footer{
  padding:32px 0 46px; color:var(--muted);
  border-top:1px solid rgba(255,255,255,.08); margin-top:28px
}
.small{font-size:.92rem; color:var(--muted)}
ol.steps{counter-reset:step; padding:0; margin:0}
ol.steps li{
  list-style:none; margin:0 0 12px; padding:16px 16px 16px 58px; position:relative;
  background:rgba(255,255,255,.05); border-radius:18px; border:1px solid rgba(255,255,255,.08)
}
ol.steps li::before{
  counter-increment:step; content:counter(step);
  position:absolute; left:16px; top:16px; width:28px; height:28px; border-radius:999px;
  display:flex; align-items:center; justify-content:center; background:rgba(252,209,22,.18); color:var(--gold); font-weight:900
}
details{
  background:rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.08); border-radius:18px; padding:16px 18px
}
details + details{margin-top:12px}
summary{cursor:pointer; font-weight:800}
.quiz-actions{display:flex; flex-wrap:wrap; gap:10px; margin-top:14px}
.notice{
  padding:14px 16px; border-radius:18px; background:rgba(252,209,22,.09); border:1px solid rgba(252,209,22,.18); color:#fff
}
@media (max-width: 960px){
  .hero-grid, .grid-3, .grid-2, .metric-grid{grid-template-columns:1fr}
  .section-head, .nav-inner{flex-direction:column; align-items:flex-start}
  .nav-links{gap:8px}
}