:root {
  --bg: #14112e; --bg2: #1d1842; --card: rgba(255, 255, 255, .06); --line: rgba(255, 255, 255, .1);
  --text: #f5f2ff; --muted: #b3add9; --saffron: #ffa62b; --teal: #2ec4b6;
  --grad: linear-gradient(135deg, #ffc23d, #ff7a1a);
  --font: "Baloo 2", "Baloo Da 2", system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", "Noto Sans Bengali", "Noto Sans Devanagari", sans-serif;
  color-scheme: dark;
}
:lang(bn) { --font: "Baloo Da 2", "Baloo 2", system-ui, "Noto Sans Bengali", sans-serif; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; font-family: var(--font); color: var(--text); line-height: 1.55; font-size: 17px;
  background:
    radial-gradient(900px 600px at -10% -10%, rgba(255, 166, 43, .18), transparent 60%),
    radial-gradient(800px 700px at 110% 10%, rgba(46, 196, 182, .14), transparent 60%),
    radial-gradient(900px 600px at 50% 110%, rgba(124, 92, 255, .25), transparent 60%), var(--bg);
  min-height: 100vh;
}
a { color: var(--teal); }
img { max-width: 100%; height: auto; }
.wrap { width: min(1080px, 100% - 32px); margin: 0 auto; }
h1, h2, h3 { line-height: 1.15; margin: 0 0 12px; }
h2 { font-size: clamp(26px, 4vw, 36px); }

.top { position: sticky; top: 0; z-index: 10; background: rgba(20, 17, 46, .82); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 0; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 8px; text-decoration: none; color: var(--text); }
.brand b { font-size: 26px; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.brand small { color: var(--muted); font-weight: 700; font-family: "Baloo Da 2", sans-serif; }
.langs { display: flex; gap: 6px; }
.langs a { padding: 4px 12px; border-radius: 99px; text-decoration: none; color: var(--text); background: var(--card); border: 1px solid var(--line); font-weight: 700; font-size: 15px; }
.langs a[aria-current] { background: var(--grad); color: #2b1300; border-color: transparent; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 22px; border-radius: 16px; font-weight: 800; font-size: 17px;
  text-decoration: none; color: var(--text); background: var(--card); border: 1px solid var(--line); }
.btn.primary { background: var(--grad); color: #2b1300; border: 0; box-shadow: 0 8px 26px rgba(255, 140, 30, .35); }
.btn.big { padding: 16px 30px; font-size: 20px; }

.hero { padding: 48px 0 24px; }
.hero .wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px; align-items: center; }
.hero h1 { font-size: clamp(38px, 6.4vw, 64px); font-weight: 800; letter-spacing: -.01em; }
.hero h1 span { display: block; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.sub { font-size: 20px; color: var(--muted); margin: 0 0 22px; max-width: 34em; }
.ctas { display: flex; gap: 10px; flex-wrap: wrap; }
.trust { color: var(--muted); font-weight: 700; font-size: 15px; margin-top: 14px; }
.art { position: relative; }
.art .board { width: 100%; max-width: 440px; border-radius: 20px; box-shadow: 0 30px 60px rgba(0, 0, 0, .5); transform: rotate(-3deg); display: block; margin-left: auto; }
.art .coach { position: absolute; left: -10px; bottom: -34px; width: 42%; max-width: 180px; filter: drop-shadow(0 14px 24px rgba(0, 0, 0, .45)); }

section { padding: 34px 0; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 18px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 22px; padding: 18px; }
.card span { font-size: 34px; }
.card h3 { font-size: 20px; margin: 6px 0; }
.card p { margin: 0; color: var(--muted); }
.coachsec .wrap { display: flex; align-items: center; gap: 22px; background: linear-gradient(135deg, rgba(255, 166, 43, .18), rgba(124, 92, 255, .14)); border: 1px solid rgba(255, 166, 43, .3); border-radius: 26px; padding: 22px; }
.coachsec img { width: 150px; flex: none; }
.coachsec p { margin: 0; color: var(--muted); font-size: 18px; }
.units { list-style: none; padding: 0; margin: 18px 0 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.units li { padding: 14px 16px; border-radius: 18px; background: var(--card); border: 1px solid var(--line); border-left: 6px solid var(--uc); }
.units b { display: block; color: var(--uc); font-size: 14px; letter-spacing: .04em; text-transform: uppercase; }
.units span { font-weight: 800; font-size: 20px; }
.units small { display: block; color: var(--muted); font-size: 15px; }
details { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 12px 16px; margin-bottom: 10px; }
summary { font-weight: 800; cursor: pointer; }
details p { margin: 8px 0 0; color: var(--muted); }
.final { text-align: center; padding-bottom: 50px; }
footer { border-top: 1px solid var(--line); padding: 22px 0 34px; color: var(--muted); font-size: 15px; }
footer nav { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 8px; }

/* legal and guide pages */
.doc { padding: 34px 0 50px; }
.doc .wrap { max-width: 820px; }
.doc .kicker { color: var(--saffron); font-weight: 800; letter-spacing: .08em; text-transform: uppercase; font-size: 14px; }
.doc h1 { font-size: clamp(32px, 5vw, 46px); }
.doc h2 { font-size: 26px; margin-top: 30px; }
.doc h3 { font-size: 20px; margin-top: 20px; }
.doc p, .doc li { color: #e2ddff; }
.doc .muted { color: var(--muted); }
.doc .short { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 6px 20px; }
.doc table { width: 100%; border-collapse: collapse; margin: 10px 0; }
.doc th, .doc td { text-align: left; padding: 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
.doc .pieces { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.doc .pieces div { background: var(--card); border-radius: 16px; padding: 12px 14px; }

@media (max-width: 760px) {
  body { font-size: 16px; }
  .hero { padding-top: 26px; }
  .hero .wrap { grid-template-columns: 1fr; }
  .art { max-width: 380px; margin: 10px auto 30px; }
  .grid, .units, .doc .pieces { grid-template-columns: 1fr; }
  .coachsec .wrap { flex-direction: column; text-align: center; }
}