/* ICTD Medical AI Workshop v2 — course-page layout, scoped under .ictdw */
.ictdw{
  --ink:#141233; --muted:#5d5a78; --line:#e6e3f0; --soft:#f6f5fb; --bg:#fff;
  --brand:#3a1fa5; --brand-d:#2b1680; --band:#17123f; --gold:#e5b54a;
  font-family:'Hind Siliguri','Inter',system-ui,sans-serif; color:var(--ink); background:var(--bg);
  font-size:16px; line-height:1.65; -webkit-font-smoothing:antialiased;
}
.ictdw *,.ictdw *::before,.ictdw *::after{box-sizing:border-box}
.ictdw h1,.ictdw h2,.ictdw h3,.ictdw p,.ictdw ul,.ictdw ol,.ictdw fieldset{margin:0}
.ictdw a{color:var(--brand)}
.ictdw-wrap{max-width:1140px;margin:0 auto;padding:0 16px}

/* ---------- hero band ---------- */
.ictdw-band{background:radial-gradient(90% 140% at 80% 0%,#2d1f78 0%,var(--band) 60%);color:#fff;padding:48px 0 56px}
.ictdw-band-in{padding-right:400px}
.ictdw-eyebrow{font:600 12px/1.4 'Inter',sans-serif;letter-spacing:.12em;text-transform:uppercase;color:var(--gold);margin-bottom:14px}
.ictdw-band h1{font:800 clamp(28px,3.6vw,40px)/1.18 'Inter','Hind Siliguri',sans-serif;letter-spacing:-.02em;margin-bottom:12px;color:#fff}
.ictdw-tracks{font:500 15px/1.5 'Inter',sans-serif;color:#cfc8f5;margin-bottom:16px}
.ictdw-desc{color:#e3dff8;font-size:17px;max-width:640px;margin-bottom:18px}
.ictdw-meta{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.ictdw-meta li{font-size:14px;border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:3px 12px;color:#e3dff8}

/* ---------- two-column layout ---------- */
.ictdw-layout{display:grid;grid-template-columns:minmax(0,1fr) 360px;grid-template-areas:"main side";gap:40px;align-items:start}
.ictdw-main{grid-area:main;padding:8px 0 64px}
.ictdw-side{grid-area:side;position:sticky;top:24px;margin-top:-300px;z-index:2}

/* ---------- purchase card ---------- */
.ictdw-buy{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 18px 40px rgba(20,12,70,.14)}
.ictdw-media iframe,.ictdw-media video{display:block;width:100%;aspect-ratio:16/9;height:auto;border:0;background:#000}
.ictdw-cover{aspect-ratio:16/9;background:linear-gradient(135deg,#2d1f78,var(--band));color:#fff;display:flex;flex-direction:column;justify-content:center;padding:20px 24px}
.ictdw-cover span{font:700 11px 'Inter',sans-serif;letter-spacing:.16em;color:var(--gold)}
.ictdw-cover strong{font:800 32px/1.1 'Inter',sans-serif;margin:6px 0 4px}
.ictdw-cover em{font:500 14px/1.4 'Inter',sans-serif;font-style:normal;color:#cfc8f5}
.ictdw-buy-body{padding:18px 20px 20px}
.ictdw-price{font:800 30px/1.1 'Inter','Hind Siliguri',sans-serif}
.ictdw-price-sub{font-size:14px;color:var(--muted);margin:2px 0 14px}
.ictdw-batches{border:0;padding:0;display:grid;gap:8px;margin-bottom:14px}
.ictdw-batches legend{font-weight:700;font-size:15px;margin-bottom:8px;padding:0}
.ictdw-batch{display:flex;gap:10px;align-items:flex-start;border:1px solid var(--line);border-radius:10px;padding:10px 12px;cursor:pointer}
.ictdw-batch:has(input:checked){border-color:var(--brand);background:#f7f5ff}
.ictdw-batch input{margin-top:5px;accent-color:var(--brand)}
.ictdw-batch-txt{display:flex;flex-direction:column;line-height:1.4}
.ictdw-batch-txt strong{font-size:15px}
.ictdw-batch-txt small{font-size:13px;color:var(--muted)}
.ictdw-batch.is-full{opacity:.55;cursor:not-allowed}
.ictdw-btn{display:flex;align-items:center;justify-content:center;width:100%;min-height:48px;border-radius:10px;background:var(--brand);color:#fff!important;font-weight:700;font-size:17px;text-decoration:none!important;transition:background .15s}
.ictdw-btn:hover{background:var(--brand-d)}
.ictdw-soon{color:var(--muted);margin-bottom:12px}
.ictdw-buy-h{font-weight:700;margin:20px 0 10px}
.ictdw-incl{list-style:none;padding:0;display:grid;gap:8px;font-size:15px}
.ictdw-incl li{display:flex;gap:10px;align-items:center}
.ictdw-incl i{font-style:normal;width:22px;text-align:center;color:var(--brand);font-size:14px}
.ictdw-help{text-align:center;font-size:14px;color:var(--muted);margin-top:12px}

/* ---------- main column ---------- */
.ictdw-tabs{position:sticky;top:0;z-index:1;display:flex;gap:4px;overflow-x:auto;background:#fff;border-bottom:1px solid var(--line);padding:10px 0;margin-bottom:8px;scrollbar-width:none}
.ictdw-tabs::-webkit-scrollbar{display:none}
.ictdw-tabs a{white-space:nowrap;font-size:14px;color:var(--muted);text-decoration:none;padding:6px 12px;border-radius:999px}
.ictdw-tabs a:hover,.ictdw-tabs a.is-on{background:var(--soft);color:var(--brand)}
.ictdw-sec{padding-top:36px;scroll-margin-top:60px}
.ictdw-sec h2{font-size:22px;line-height:1.3;font-weight:700;margin-bottom:14px}
.ictdw-sec h2 span{font-size:14px;font-weight:500;color:var(--muted);margin-left:8px}
.ictdw-box{border:1px solid var(--line);border-radius:12px;padding:20px 22px;background:#fff}

.ictdw-check{list-style:none;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:10px 24px}
.ictdw-check-1{grid-template-columns:1fr;margin-top:10px}
.ictdw-check li{position:relative;padding-left:26px;font-size:15px}
.ictdw-check li::before{content:'✓';position:absolute;left:0;top:0;color:var(--brand);font-weight:700}

.ictdw-acc{padding:0}
.ictdw-acc details{border-bottom:1px solid var(--line)}
.ictdw-acc details:last-child{border-bottom:0}
.ictdw-acc summary{list-style:none;cursor:pointer;display:flex;gap:12px;align-items:center;padding:15px 20px;position:relative;padding-right:44px}
.ictdw-acc summary::-webkit-details-marker{display:none}
.ictdw-acc summary::after{content:'';position:absolute;right:20px;top:50%;width:8px;height:8px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:translateY(-70%) rotate(45deg);transition:transform .2s}
.ictdw-acc details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.ictdw-mno{font:700 13px 'Inter',sans-serif;color:var(--brand);background:var(--soft);border-radius:6px;padding:2px 8px}
.ictdw-mtt{font-weight:600;flex:1}
.ictdw-mtm{font-size:13px;color:var(--muted);white-space:nowrap}
.ictdw-acc ul{padding:0 22px 16px 58px;display:grid;gap:4px;color:var(--muted);font-size:15px}
.ictdw-acc p{padding:0 20px 16px;color:var(--muted);font-size:15px}
#ictdw-details .ictdw-acc ul{padding-left:40px}
.ictdw-method{margin-top:12px;font-size:15px;color:var(--muted)}
.ictdw-method strong{color:var(--ink)}

.ictdw-chips{display:flex;flex-wrap:wrap;gap:8px}
.ictdw-chips span{border:1px solid var(--line);border-radius:999px;padding:6px 14px;font:600 14px 'Inter',sans-serif}
.ictdw-chips .is-hl{border-color:var(--brand);color:var(--brand);background:#f7f5ff}

.ictdw-inst{display:flex;gap:18px;align-items:flex-start}
.ictdw-avatar{flex:0 0 64px;height:64px;border-radius:50%;background:var(--soft);color:var(--brand);display:flex;align-items:center;justify-content:center;font:800 20px 'Inter',sans-serif}
.ictdw-inst h3{font-size:18px}
.ictdw-role{color:var(--brand);font-weight:600;font-size:14px;margin-bottom:6px}
.ictdw-inst p:last-child{font-size:15px;color:var(--muted)}

.ictdw-bonus{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.ictdw-bitem{border:1px solid var(--line);border-radius:12px;padding:16px 18px;position:relative}
.ictdw-bitem::after{content:'ফ্রি';position:absolute;top:14px;right:14px;font-size:12px;font-weight:700;color:var(--brand);background:#f7f5ff;border-radius:999px;padding:1px 9px}
.ictdw-bitem h3{font-size:16px;padding-right:44px;margin-bottom:4px}
.ictdw-bitem h3 a{color:var(--ink);text-decoration:none}
.ictdw-bitem p{font-size:14px;color:var(--muted)}

.ictdw-cert{display:grid;grid-template-columns:1fr 240px;gap:20px;align-items:center}
.ictdw-cert-mock{border:1px solid var(--line);border-radius:8px;padding:16px;display:flex;flex-direction:column;gap:4px;background:#fff;box-shadow:0 6px 16px rgba(20,12,70,.07);border-top:4px solid var(--brand)}
.ictdw-cert-mock small{font:700 9px 'Inter',sans-serif;letter-spacing:.12em;color:var(--muted)}
.ictdw-cert-mock b{font:700 13px 'Inter',sans-serif}
.ictdw-cert-mock span{font:800 18px 'Inter',sans-serif;color:var(--brand);margin:6px 0 2px}
.ictdw-cert-mock em{font:500 11px/1.4 'Inter',sans-serif;font-style:normal;color:var(--muted)}

.ictdw-steps{list-style:none;padding:0;counter-reset:s;display:grid;gap:0;border:1px solid var(--line);border-radius:12px}
.ictdw-steps li{counter-increment:s;display:grid;grid-template-columns:36px 1fr;column-gap:12px;padding:14px 18px;border-bottom:1px solid var(--line)}
.ictdw-steps li:last-child{border-bottom:0}
.ictdw-steps li::before{content:counter(s);grid-row:span 2;width:28px;height:28px;border-radius:50%;background:var(--soft);color:var(--brand);font:700 13px 'Inter',sans-serif;display:flex;align-items:center;justify-content:center}
.ictdw-steps strong{font-size:15px}
.ictdw-steps span{font-size:14px;color:var(--muted)}
.ictdw-note{margin-top:12px;font-size:14px;color:var(--muted)}
.ictdw-more{margin-top:16px;font-size:15px}

.ictdw-sticky{display:none}

/* ---------- tablet / mobile ---------- */
@media (max-width:960px){
  .ictdw-band{padding:32px 0 36px}
  .ictdw-band-in{padding-right:16px}
  .ictdw-layout{grid-template-columns:minmax(0,1fr);grid-template-areas:"side" "main";gap:0}
  .ictdw-side{position:static;margin-top:20px}
  .ictdw-check{grid-template-columns:1fr}
  .ictdw-bonus{grid-template-columns:1fr}
  .ictdw-cert{grid-template-columns:1fr}
  .ictdw-cert-mock{max-width:280px}
  .ictdw-sticky{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:999;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:#fff;border-top:1px solid var(--line);box-shadow:0 -8px 24px rgba(20,10,60,.08);transform:translateY(110%);transition:transform .25s}
  .ictdw-sticky.is-on{transform:none}
  .ictdw-sticky div{display:flex;flex-direction:column;line-height:1.2}
  .ictdw-sticky strong{font:800 20px 'Inter','Hind Siliguri',sans-serif}
  .ictdw-sticky span{font-size:13px;color:var(--muted)}
  .ictdw-sticky .ictdw-btn{width:auto;padding:0 22px}
  .ictdw-main{padding-bottom:96px}
}

.ictdw-cert{grid-template-columns:1fr 300px}
.ictdw-cert-img{width:100%;height:auto;border-radius:6px;box-shadow:0 8px 20px rgba(20,12,70,.12)}
@media (max-width:960px){.ictdw-cert{grid-template-columns:1fr}.ictdw-cert-img{max-width:420px}}

/* YouTube click-to-play */
.ictdw-yt{display:block;position:relative;width:100%;aspect-ratio:16/9;padding:0;border:0;background:#000;cursor:pointer;overflow:hidden}
.ictdw-yt img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .3s}
.ictdw-yt:hover img{transform:scale(1.03)}
.ictdw-play{position:absolute;left:50%;top:50%;width:68px;height:48px;margin:-24px 0 0 -34px;border-radius:14px;background:rgba(255,0,0,.92);box-shadow:0 6px 18px rgba(0,0,0,.35)}
.ictdw-play::after{content:"";position:absolute;left:27px;top:14px;border-style:solid;border-width:10px 0 10px 17px;border-color:transparent transparent transparent #fff}
.ictdw-media iframe{aspect-ratio:16/9}