:root{--black:#171717;--nav:#050505;--blue:#5377a4;--blue2:#345e8b;--yellow:#d8f300;--gold:#ffcc3f;--red:#d81722;--ink:#3d4654;--muted:#687385;--line:#e5e7eb;--soft:#f6f7f9;--shadow:0 12px 26px rgba(21,25,33,.12)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body.bd35-page{margin:0;background:#fff;color:var(--ink);font-family:"Noto Sans Bengali","Hind Siliguri","SolaimanLipi","Segoe UI",Arial,sans-serif;line-height:1.7}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}.shell{width:min(100% - 32px,1050px);margin:0 auto}.section-pad{padding:24px 0}
.bd35-header{background:var(--black);color:#fff;box-shadow:0 6px 18px rgba(0,0,0,.2)}.bd35-top{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:22px}.bd35-logo{display:flex;align-items:center;gap:12px}.bd35-logo img{width:142px;height:50px;object-fit:contain}.bd35-logo b{font-size:34px;line-height:1;color:#f2f2ff}.bd35-logo small{display:block;color:#d5dae5;font-weight:800}.bd35-actions{display:flex;gap:14px;flex-wrap:wrap}.bd35-actions a{background:linear-gradient(#6084b2,#3b6593);padding:9px 22px;border-radius:999px;font-weight:1000;color:#fff;text-transform:uppercase;box-shadow:inset 0 1px rgba(255,255,255,.18)}
.bd35-nav{background:#000}.bd35-nav .shell{display:flex;justify-content:center;overflow:auto}.bd35-nav a{color:#fff;font-weight:1000;padding:17px 12px;white-space:nowrap;border-bottom:4px solid transparent}.bd35-nav a:hover,.bd35-nav a:first-child{color:var(--yellow);border-bottom-color:var(--yellow)}
.bd35-hero{background:#050505}.bd35-hero img{width:100%;aspect-ratio:16/5.1;object-fit:cover;object-position:left center}.link-strip{background:#fff;border-bottom:1px solid var(--line)}.link-strip .shell{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;padding:18px 0}.link-strip a{border:1px solid var(--line);border-radius:4px;padding:7px 10px;color:#365986;font-weight:900;background:#fafafa}
.article-intro{padding:28px 0}.article-intro h1{text-align:center;font-size:clamp(30px,4.4vw,44px);line-height:1.2;color:#3d4654;margin:0 0 16px}.article-intro h2,.section-title{font-size:30px;line-height:1.25;color:#3d4654;margin:24px 0 12px}.article-intro p{font-size:18px;margin:0 0 16px}.media-block{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:center;padding:18px 0 30px}.media-block img{border-radius:2px;box-shadow:var(--shadow);border:1px solid #111}.media-block h2{font-size:30px;margin:0 0 10px}.primary-btn,.cat-card a,.post-card a:last-child{display:inline-flex;background:linear-gradient(#6084b2,#3b6593);color:#fff;border-radius:999px;padding:9px 18px;font-weight:1000}.cat-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}.cat-card{border:1px solid var(--line);border-radius:4px;background:#fff;box-shadow:0 8px 20px rgba(30,36,46,.07);overflow:hidden;padding-bottom:14px}.cat-card img{height:118px;width:100%;object-fit:cover}.cat-card h3{margin:12px 12px 5px;color:#111;font-size:19px}.cat-card p{margin:0 12px 12px;color:var(--muted);font-size:14px}.cat-card a{margin-left:12px;border-radius:4px;padding:7px 12px}
table{width:100%;border-collapse:collapse;background:#fff;border-radius:4px;overflow:hidden}th,td{border:1px solid var(--line);padding:12px;text-align:left;vertical-align:top}th{background:#171717;color:#fff}.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.post-card{border:1px solid var(--line);border-radius:4px;overflow:hidden;background:#fff;box-shadow:0 8px 22px rgba(25,31,43,.08)}.post-card img{height:150px;width:100%;object-fit:cover}.post-card div{padding:14px}.post-card span,.meta span{font-size:13px;color:var(--muted);font-weight:800}.post-card h3{font-size:20px;line-height:1.3;margin:5px 0 8px;color:#273044}.post-card p{margin:0 0 12px}.safety{border-top:1px solid var(--line)}.faq{padding:10px 0 34px}.faq h2{font-size:30px}.faq details,.article-body details{border:1px solid var(--line);border-radius:4px;background:#fff;margin:10px 0;padding:12px}summary{font-weight:1000;color:#315b8a;cursor:pointer}
.subhero,.article-hero{background:#f6f7f9;border-bottom:1px solid var(--line)}.subhero-grid{display:grid;grid-template-columns:1fr 390px;gap:26px;align-items:center;padding:42px 0}.subhero h1,.article-hero h1{font-size:clamp(32px,4.6vw,50px);line-height:1.18;color:#303846;margin:0 0 12px}.subhero p,.article-hero p{font-size:18px;margin:0 0 20px}.subhero img{height:245px;width:100%;object-fit:cover;border:1px solid #111;box-shadow:var(--shadow)}.article-hero .shell{padding:42px 0}.breadcrumb a{color:#315b8a;font-weight:900}
.content-layout{display:grid;grid-template-columns:1fr 280px;gap:24px;padding:26px 0}.content-panel,.side-panel{background:#fff;border:1px solid var(--line);border-radius:4px;padding:22px;box-shadow:0 8px 20px rgba(20,25,35,.06)}.content-panel h2,.side-panel h2{font-size:28px;color:#303846;margin:18px 0 10px}.content-panel h2:first-child,.side-panel h2:first-child{margin-top:0}.content-panel li{margin:8px 0}.quick-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.quick-grid a,.side-panel a{display:block;border:1px solid var(--line);background:#fafafa;border-radius:4px;padding:10px;color:#315b8a;font-weight:900}.quick-grid b{display:block}.quick-grid span{display:block;color:var(--muted);font-size:13px}.side-panel{display:grid;gap:9px;align-self:start;position:sticky;top:18px}.article-body>img{width:100%;max-height:360px;object-fit:cover;margin-bottom:15px;border:1px solid #111}.meta{display:flex;gap:12px;flex-wrap:wrap}.lede{font-size:19px;background:#f7f9fc;border-left:5px solid var(--blue);padding:15px;border-radius:4px}.note{background:#fff8d8;border:1px solid #ead476;border-radius:4px;color:#674b00;font-weight:800;padding:15px;margin:18px 0}
.bd35-footer{background:#2f363d;color:#fff;margin-top:18px}.bd35-footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr 1.2fr 1fr;gap:20px;padding:30px 0}.bd35-footer h3{margin:0 0 10px;color:#fff}.bd35-footer a{display:block;color:#dfe8f7;margin:5px 0}.footer-logo{width:140px;height:52px;object-fit:contain;margin-bottom:10px}.bd35-copy{text-align:center;background:#22282e;padding:11px;font-weight:800}
@media(max-width:1000px){.media-block,.subhero-grid,.content-layout{grid-template-columns:1fr}.cat-grid{grid-template-columns:repeat(3,1fr)}.post-grid{grid-template-columns:repeat(2,1fr)}.bd35-footer-grid{grid-template-columns:repeat(2,1fr)}.side-panel{position:static}.bd35-hero img{aspect-ratio:16/7}}
@media(max-width:640px){.shell{width:min(100% - 28px,1050px)}.bd35-top{flex-direction:column;align-items:center;padding:10px 0}.bd35-logo img{width:118px;height:44px}.bd35-logo b{font-size:28px}.bd35-actions{width:100%;display:grid;grid-template-columns:1fr 1fr}.bd35-actions a{text-align:center}.bd35-nav .shell{display:none}.bd35-hero img{aspect-ratio:16/6.3}.article-intro h1{font-size:28px}.article-intro p{font-size:17px}.cat-grid,.post-grid,.quick-grid,.bd35-footer-grid{grid-template-columns:1fr}.cat-card img,.post-card img{height:185px}.content-panel,.side-panel{padding:16px}.subhero img{height:210px}}