/* MyPosGPT Blog — shares the brand of the main landing page */
:root{
  --primary:#107BBF;--accent:#4DB0EA;--purple:#5F5BA8;--navy:#27236A;--navy-2:#1A1650;
  --ink:#17163A;--ink-2:#34345A;--ink-3:#6B6C8C;--line:rgba(23,22,58,.09);--soft:#F6F6FC;--tint:#F1F0F9;
  --grad:linear-gradient(135deg,#5F5BA8 0%,#107BBF 100%);
  --hero:radial-gradient(ellipse at 85% 0%,rgba(77,176,234,.32),transparent 55%),radial-gradient(ellipse at 0% 100%,rgba(95,91,168,.45),transparent 55%),linear-gradient(135deg,#1A1650 0%,#27236A 45%,#1F4E9A 78%,#107BBF 100%);
  --r:18px;--shadow:0 14px 40px rgba(23,22,58,.09);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:'Inter','Hind Siliguri',system-ui,-apple-system,sans-serif;color:var(--ink);background:#fff;line-height:1.7;font-size:17px;overflow-x:hidden}
html[lang="bn"] body{font-family:'Hind Siliguri','Inter',system-ui,sans-serif;font-size:18px;line-height:1.85}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
img,svg{max-width:100%;display:block}
h1,h2,h3{font-family:'Poppins','Hind Siliguri',sans-serif;line-height:1.3;color:var(--ink)}
html[lang="bn"] h1,html[lang="bn"] h2,html[lang="bn"] h3{font-family:'Hind Siliguri','Poppins',sans-serif;line-height:1.4}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:8px 14px;z-index:999}
.skip:focus{left:12px;top:12px}

/* Header (always white, like the landing page) */
.bh{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 4px 20px rgba(23,22,58,.05)}
.bh .wrap{display:flex;align-items:center;gap:22px;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-family:'Poppins',sans-serif;font-weight:700;font-size:20px;color:var(--ink)!important;text-decoration:none!important}
.logo svg{width:28px;height:32px}
.logo b{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.bh nav{display:flex;gap:4px;margin-left:auto}
.bh nav a{padding:8px 14px;border-radius:999px;color:var(--ink-2);font-size:15px;font-weight:500;text-decoration:none}
.bh nav a:hover,.bh nav a[aria-current]{color:var(--primary);background:var(--tint)}
.lang{display:inline-flex;padding:3px;border:1px solid rgba(23,22,58,.14);border-radius:999px}
.lang a{padding:5px 12px;border-radius:999px;font-size:13px;font-weight:600;color:var(--ink-3);text-decoration:none}
.lang a.on{background:var(--grad);color:#fff}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:999px;font-weight:600;font-size:15px;text-decoration:none!important;transition:transform .2s,box-shadow .2s;white-space:nowrap}
.btn-p{background:var(--grad);color:#fff!important;box-shadow:0 10px 24px rgba(16,123,191,.3)}
.btn-p:hover{transform:translateY(-2px)}
.btn-w{background:#fff;color:var(--navy)!important}
.btn-g{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.3);color:#fff!important}
.burger{display:none;width:40px;height:40px;border:0;background:none;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.burger span{width:22px;height:2px;background:var(--ink);border-radius:2px}

/* Hero band */
.bhero{background:var(--hero);color:#fff;padding:64px 0 72px;position:relative;overflow:hidden}
.bhero::after{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(ellipse at 50% 20%,#000 30%,transparent 75%);pointer-events:none}
.bhero .wrap{position:relative;z-index:1}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:#CDEBFF;font-size:13px;font-weight:600;margin-bottom:18px}
.bhero h1{color:#fff;font-size:clamp(30px,4.4vw,54px);max-width:820px}
.bhero h1 em{font-style:normal;background:linear-gradient(135deg,#8FD6FF,#C4BFF5);-webkit-background-clip:text;background-clip:text;color:transparent}
.bhero p.lead{color:rgba(255,255,255,.82);font-size:clamp(16px,1.5vw,19px);max-width:680px;margin-top:14px}
.search{margin-top:28px;display:flex;max-width:520px;background:#fff;border-radius:14px;padding:6px;box-shadow:0 16px 40px rgba(10,8,40,.3)}
.search input{flex:1;border:0;outline:0;font:inherit;font-size:16px;padding:8px 12px;color:var(--ink);min-width:0;background:transparent}

/* Index */
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:36px 0 26px}
.chips button{font:inherit;font-size:14px;font-weight:600;padding:8px 16px;border-radius:999px;border:1px solid rgba(23,22,58,.14);background:#fff;color:var(--ink-2);cursor:pointer}
.chips button.on{background:var(--grad);border-color:transparent;color:#fff}
.featured{display:grid;grid-template-columns:1.15fr 1fr;gap:0;border:1px solid var(--line);border-radius:24px;overflow:hidden;box-shadow:var(--shadow);margin-bottom:34px;color:inherit;text-decoration:none!important;transition:transform .25s,box-shadow .25s}
.featured:hover{transform:translateY(-4px);box-shadow:0 24px 60px rgba(23,22,58,.14)}
.featured .cov{aspect-ratio:auto;height:100%;min-height:300px}
.featured .fbody{padding:36px;display:flex;flex-direction:column;justify-content:center}
.featured h2{font-size:clamp(22px,2.4vw,30px);margin:10px 0 12px}
.featured p{color:var(--ink-3)}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-bottom:70px}
.card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff;color:inherit;text-decoration:none!important;transition:transform .25s,box-shadow .25s}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.card .cbody{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.card h3{font-size:19px;margin:10px 0 8px}
.card p{font-size:15px;color:var(--ink-3);line-height:1.6;flex:1}
.cat{display:inline-block;align-self:flex-start;padding:4px 11px;border-radius:999px;background:var(--tint);color:var(--purple);font-size:12.5px;font-weight:700}
.meta{display:flex;gap:14px;flex-wrap:wrap;font-size:13.5px;color:var(--ink-3);margin-top:14px}
.cov{display:block;width:100%;height:auto;aspect-ratio:1200/630;object-fit:cover;background:var(--navy)}
.empty{text-align:center;color:var(--ink-3);padding:40px 0 80px;display:none}

/* Article */
.crumb{font-size:14px;color:rgba(255,255,255,.7);margin-bottom:16px}
.crumb a{color:#CDEBFF}
.crumb span{margin:0 6px}
.ahero .meta{color:rgba(255,255,255,.75);margin-top:18px}
.ahero .cat{background:rgba(255,255,255,.14);color:#CDEBFF}
.alayout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:56px;margin-top:-40px;position:relative;z-index:2;padding-bottom:40px}
.article{min-width:0}
.article .cov{border-radius:22px;box-shadow:0 24px 60px rgba(23,22,58,.18);margin-bottom:34px}
.tldr{border-radius:18px;padding:22px 24px;background:linear-gradient(160deg,#F3F2FC,#EAF5FD);border:1px solid rgba(95,91,168,.18);margin-bottom:34px}
.tldr strong.lbl{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--purple);margin-bottom:6px;text-transform:uppercase;letter-spacing:.04em}
html[lang="bn"] .tldr strong.lbl{text-transform:none;letter-spacing:0;font-size:15px}
.tldr p{font-size:1.02em;color:var(--ink)}
.prose h2{font-size:clamp(22px,2.3vw,28px);margin:42px 0 14px;scroll-margin-top:90px}
.prose p{margin:0 0 16px;color:var(--ink-2)}
.prose ul,.prose ol{margin:0 0 18px 22px;color:var(--ink-2)}
.prose li{margin:6px 0;padding-left:4px}
.prose strong{color:var(--ink)}
.prose table{width:100%;border-collapse:separate;border-spacing:0;margin:8px 0 22px;font-size:.92em;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.prose th{background:var(--tint);text-align:left;font-weight:700;color:var(--ink);padding:11px 14px;white-space:nowrap}
.prose td{padding:11px 14px;border-top:1px solid var(--line);vertical-align:top;color:var(--ink-2)}
.prose .formula{font-weight:700;color:var(--navy);background:#fff;border:1px dashed rgba(95,91,168,.45);border-radius:12px;padding:12px 16px}
.prose .note{font-size:.92em;background:#FFF8EB;border:1px solid #FCDCA6;color:#7A4A00;border-radius:12px;padding:12px 16px}
.takeaways{margin:40px 0;border-radius:18px;padding:24px 26px;background:var(--navy);color:#fff}
.takeaways h2{color:#fff;font-size:20px;margin:0 0 12px}
.takeaways ul{margin:0;padding:0;list-style:none}
.takeaways li{position:relative;padding-left:28px;margin:10px 0;color:rgba(255,255,255,.9)}
.takeaways li::before{content:'✓';position:absolute;left:0;top:0;width:20px;height:20px;border-radius:6px;background:var(--grad);display:grid;place-items:center;font-size:12px;font-weight:800;color:#fff;line-height:20px;text-align:center}
.faq h2{margin-top:44px}
.faq details{border:1px solid var(--line);border-radius:14px;margin:10px 0;background:#fff;transition:box-shadow .2s}
.faq details[open]{box-shadow:var(--shadow);border-color:rgba(16,123,191,.25)}
.faq summary{cursor:pointer;list-style:none;padding:16px 50px 16px 20px;font-weight:700;color:var(--ink);position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';position:absolute;right:18px;top:50%;transform:translateY(-50%);width:26px;height:26px;border-radius:8px;background:var(--tint);color:var(--primary);display:grid;place-items:center;font-size:18px;line-height:26px;text-align:center}
.faq details[open] summary::after{content:'−'}
.faq details p{padding:0 20px 18px;color:var(--ink-2)}
.byline{display:flex;align-items:center;gap:14px;margin:40px 0 0;padding:20px;border-radius:16px;background:var(--soft);border:1px solid var(--line)}
.byline .av{width:46px;height:46px;border-radius:14px;background:var(--grad);display:grid;place-items:center;flex:none}
.byline .av svg{width:24px;height:28px}
.byline b{display:block}
.byline span{font-size:14px;color:var(--ink-3)}
aside.side{position:relative}
.toc{position:sticky;top:92px;margin-top:64px;border:1px solid var(--line);border-radius:18px;padding:20px;background:#fff}
.toc strong{display:block;font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-3);margin-bottom:10px}
html[lang="bn"] .toc strong{text-transform:none;letter-spacing:0;font-size:15px}
.toc ol{list-style:none;counter-reset:t}
.toc li{counter-increment:t;margin:4px 0}
.toc ol a{display:block;font-size:14px;line-height:1.45;color:var(--ink-2);padding:6px 8px 6px 30px;border-radius:9px;position:relative;text-decoration:none}
.toc ol a::before{content:counter(t);position:absolute;left:8px;top:6px;font-size:12px;font-weight:700;color:var(--purple)}
.toc ol a:hover,.toc ol a.on{background:var(--tint);color:var(--primary)}
.toc .btn{width:100%;justify-content:center;margin-top:16px;font-size:14px}
.related{background:var(--soft);padding:60px 0 70px;border-top:1px solid var(--line)}
.related h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:24px}
.related .grid{margin:0}
.progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--grad);z-index:60}

/* CTA + footer */
.cta{background:var(--hero);color:#fff;border-radius:26px;padding:44px;display:flex;align-items:center;justify-content:space-between;gap:26px;margin:20px 0 70px;flex-wrap:wrap}
.cta h2{color:#fff;font-size:clamp(22px,2.6vw,32px);max-width:600px}
.cta p{color:rgba(255,255,255,.8);margin-top:8px;max-width:600px}
.cta .acts{display:flex;gap:10px;flex-wrap:wrap}
.bf{background:#0F0D36;color:rgba(255,255,255,.7);padding:46px 0 30px;font-size:14.5px}
.bf .cols{display:grid;grid-template-columns:1.4fr 1fr 1.3fr;gap:30px}
.bf .logo{color:#fff!important}
.bf a{color:rgba(255,255,255,.8)}
.bf h3{color:#fff;font-size:15px;margin-bottom:10px}
.bf ul{list-style:none}
.bf li{margin:6px 0}
.bf .copy{border-top:1px solid rgba(255,255,255,.1);margin-top:30px;padding-top:18px;font-size:13px}

/* Responsive */
@media (max-width:1000px){
  .alayout{grid-template-columns:1fr;gap:0}
  aside.side{display:none}
  .grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .featured{grid-template-columns:1fr}
  .featured .cov{min-height:0;aspect-ratio:1200/630}
}
@media (max-width:760px){
  .bh nav{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;padding:10px 16px 16px;border-bottom:1px solid var(--line);box-shadow:0 14px 30px rgba(23,22,58,.1)}
  .bh nav.open{display:flex}
  .burger{display:flex}
  .bh .btn-p{display:none}
  .lang{margin-left:auto}
  .wrap{padding:0 16px}
  .bhero{padding:44px 0 60px}
  .grid{grid-template-columns:1fr}
  .featured .fbody{padding:24px}
  .cta{padding:28px 22px}
  .bf .cols{grid-template-columns:1fr}
  .prose h2{margin-top:34px}
  .prose table{display:block;overflow-x:auto;white-space:normal}
  .prose th{white-space:normal}
  body{font-size:16px} html[lang="bn"] body{font-size:17px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{.bh,.toc,.cta,.related,.bf,.progress{display:none!important}.bhero{background:none;color:#000}.bhero h1{color:#000}}