:root{--apbl-ink:#071329;--apbl-cream:#fff3d5;--apbl-copper:#b86945;--apbl-green:#153b32}
.apbl-page-body{margin:0;min-height:100vh;background:linear-gradient(160deg,#f6eedb,#d5dfce);color:#18231f}
.apbl-nav{display:flex;justify-content:space-between;align-items:center;max-width:1180px;margin:auto;padding:18px 20px;font-family:"Noto Sans Bengali","Hind Siliguri",sans-serif}.apbl-nav a{color:#071329;text-decoration:none;font-weight:700}
html.apbl-lock,html.apbl-lock body{overflow:hidden}
.apbl-opening{position:fixed;inset:0;z-index:2147483000;background:#071329;display:grid;place-items:center;opacity:0;visibility:hidden;transition:opacity .45s ease,visibility .45s ease;color:#fff;font-family:"Noto Sans Bengali","Hind Siliguri",sans-serif}
.apbl-opening.is-visible{opacity:1;visibility:visible}
.apbl-opening-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.apbl-vignette{position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,12,25,.92) 0%,rgba(4,12,25,.56) 48%,rgba(4,12,25,.2) 100%),linear-gradient(0deg,rgba(4,12,25,.78),transparent 50%)}
.apbl-opening-copy{position:relative;width:min(1120px,88vw);margin:auto;text-shadow:0 2px 18px rgba(0,0,0,.55)}
.apbl-kicker{font-size:.85rem;letter-spacing:.12em;text-transform:uppercase;color:#efd49a;margin:0 0 .8rem}
.apbl-opening h2{font-family:"Noto Serif Bengali",serif;font-size:clamp(3rem,8vw,7rem);line-height:1;margin:0 0 1rem;color:#fff3d5;max-width:900px}
.apbl-opening-copy>p:not(.apbl-kicker){font-size:clamp(1.1rem,2vw,1.55rem);line-height:1.65;max-width:670px}
.apbl-actions,.apbl-downloads{display:flex;gap:.8rem;flex-wrap:wrap;margin-top:1.6rem}
.apbl-primary,.apbl-secondary,.apbl-sound{border:1px solid transparent;border-radius:999px;padding:.85rem 1.25rem;font:700 1rem/1.2 "Noto Sans Bengali",sans-serif;text-decoration:none;cursor:pointer;transition:transform .2s ease,background .2s ease}
.apbl-primary{background:#fff3d5;color:#071329}.apbl-primary:hover{transform:translateY(-2px);color:#071329}
.apbl-secondary,.apbl-sound{background:rgba(7,19,41,.68);border-color:rgba(255,243,213,.45);color:#fff3d5}
.apbl-close{position:absolute;right:24px;top:24px;z-index:2;border:1px solid rgba(255,255,255,.45);background:rgba(0,0,0,.35);color:#fff;border-radius:999px;padding:.6rem 1rem;cursor:pointer}
.apbl-progress{position:absolute;left:0;right:0;bottom:0;height:4px;background:rgba(255,255,255,.18)}.apbl-progress span{display:block;width:0;height:100%;background:#efd49a}
.apbl-launcher{position:fixed;right:18px;bottom:18px;z-index:99990;display:flex;align-items:center;gap:.7rem;width:min(310px,calc(100vw - 36px));padding:.55rem;background:#071329;color:#fff3d5!important;border:1px solid rgba(239,212,154,.45);border-radius:14px;box-shadow:0 14px 40px rgba(0,0,0,.28);text-decoration:none!important;font-family:"Noto Sans Bengali",sans-serif}
.apbl-launcher img{width:54px;height:68px;object-fit:cover;border-radius:8px}.apbl-launcher span{font-size:.82rem;line-height:1.35}.apbl-launcher strong{font-size:1rem}
.apbl-book{max-width:1180px;margin:0 auto;padding:clamp(24px,5vw,72px) 20px;color:#18231f;font-family:"Noto Sans Bengali","Hind Siliguri",sans-serif}
.apbl-book-hero{display:grid;grid-template-columns:minmax(260px,420px) 1fr;gap:clamp(28px,6vw,84px);align-items:center;padding:clamp(24px,5vw,60px);border-radius:30px;background:linear-gradient(145deg,#f8eed7,#d8dfc8);box-shadow:0 20px 60px rgba(20,40,34,.12)}
.apbl-cover-wrap img{display:block;width:100%;max-height:680px;object-fit:contain;border-radius:18px;box-shadow:0 22px 50px rgba(5,20,18,.24)}
.apbl-book h1,.apbl-book h2{font-family:"Noto Serif Bengali",serif;color:#071329}.apbl-book h1{font-size:clamp(2.8rem,6vw,5.8rem);line-height:1.06;margin:.2rem 0}.apbl-author{font-size:1.3rem;font-weight:700;color:#77472f}.apbl-lead{font-size:1.15rem;line-height:1.85}.apbl-book-copy>p:not(.apbl-kicker):not(.apbl-author){line-height:1.85}
.apbl-trailer-section{margin-top:50px;padding:clamp(24px,5vw,54px);background:#071329;border-radius:30px;color:#fff}.apbl-trailer-section h2{color:#fff3d5;font-size:clamp(2rem,4vw,3.5rem);margin:.3rem 0 1.5rem}.apbl-trailer-section video{display:block;width:100%;aspect-ratio:16/9;border-radius:18px;background:#000;box-shadow:0 20px 50px rgba(0,0,0,.3)}
.apbl-themes{display:flex;justify-content:center;gap:.7rem;flex-wrap:wrap;margin:34px 0}.apbl-themes span{padding:.55rem 1rem;border:1px solid #b86945;border-radius:999px;color:#77472f}.apbl-site-note{text-align:center;color:#53635d}.apbl-site-note a{color:#77472f}
@media(max-width:760px){.apbl-book-hero{grid-template-columns:1fr}.apbl-cover-wrap{max-width:340px;margin:auto}.apbl-opening-copy{width:86vw}.apbl-opening h2{font-size:clamp(2.8rem,14vw,4.6rem)}.apbl-vignette{background:linear-gradient(0deg,rgba(4,12,25,.95),rgba(4,12,25,.3) 75%)}.apbl-opening-copy{align-self:end;margin-bottom:12vh}.apbl-launcher{right:10px;bottom:10px}.apbl-close{right:12px;top:12px}}
@media(prefers-reduced-motion:reduce){.apbl-opening,.apbl-primary,.apbl-secondary,.apbl-sound{transition:none}}