@font-face{font-family:"Hind Siliguri";font-weight:400;font-style:normal;font-display:swap;src:url(/assets/fonts/hind-siliguri-regular.woff2) format("woff2")}
@font-face{font-family:"Hind Siliguri";font-weight:600;font-style:normal;font-display:swap;src:url(/assets/fonts/hind-siliguri-semibold.woff2) format("woff2")}
@font-face{font-family:"Hind Siliguri";font-weight:700;font-style:normal;font-display:swap;src:url(/assets/fonts/hind-siliguri-bold.woff2) format("woff2")}
:root{
  --ink:#13263a;--text:#24384c;--muted:#5b6b7b;--line:#dfe6ec;--bg:#ffffff;--soft:#f4f7f6;--soft2:#eaf3ef;
  --green:#0b6e4f;--green-d:#08553d;--green-l:#e3f2ec;--gold:#e9a23b;--navy:#13263a;--wa:#1fa855;--wa-d:#178a45;
  --radius:12px;--shadow:0 1px 2px rgba(19,38,58,.06),0 6px 20px rgba(19,38,58,.06);
  --font:"Hind Siliguri",system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans Bengali",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font);font-size:17px;line-height:1.75;color:var(--text);background:var(--bg)}
img,svg{max-width:100%;height:auto}
a{color:var(--green)}
a:hover{color:var(--green-d)}
h1,h2,h3,h4{font-family:var(--font);color:var(--ink);line-height:1.35;font-weight:700;margin:1.6em 0 .55em}
h1{font-size:clamp(28px,4.2vw,42px);margin:.2em 0 .35em}
h2{font-size:clamp(22px,2.8vw,28px)}
h3{font-size:19px;margin:1.2em 0 .4em}
p{margin:0 0 1em}
ul,ol{padding-left:1.3em;margin:0 0 1.1em}
li{margin:.25em 0}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:8px 14px;z-index:99}
.skip:focus{left:8px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
/* top + header */
.top{background:var(--navy);color:#c9d6e2;font-size:14px}
.top .wrap{display:flex;gap:18px;justify-content:flex-end;align-items:center;min-height:36px;flex-wrap:wrap}
.top a{color:#fff;text-decoration:none}
header.site{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
header.site .wrap{display:flex;align-items:center;gap:18px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);margin-right:auto}
.brand .mark{width:40px;height:40px;border-radius:10px;background:var(--green);display:grid;place-items:center;color:#fff;font-weight:700;font-size:20px;flex:none}
.brand b{display:block;font-size:19px;line-height:1.1}
.brand small{display:block;color:var(--muted);font-size:13px;line-height:1.2}
nav.main{display:flex;gap:4px;align-items:center}
nav.main a{color:var(--ink);text-decoration:none;padding:8px 11px;border-radius:8px;font-weight:600;font-size:16px}
nav.main a:hover,nav.main a[aria-current]{background:var(--soft2);color:var(--green-d)}
.menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:7px 12px;font:inherit;font-weight:600;color:var(--ink)}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:10px;font-weight:700;text-decoration:none;border:2px solid transparent;font-size:16px;line-height:1.2;cursor:pointer;font-family:var(--font)}
.btn svg{width:20px;height:20px;flex:none}
.btn-wa{background:var(--wa);color:#fff}.btn-wa:hover{background:var(--wa-d);color:#fff}
.btn-green{background:var(--green);color:#fff}.btn-green:hover{background:var(--green-d);color:#fff}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}.btn-ghost:hover{border-color:var(--green);color:var(--green-d)}
.btn-light{background:#fff;color:var(--green-d)}.btn-light:hover{background:var(--green-l);color:var(--green-d)}
.btn-sm{padding:7px 13px;font-size:15px}
.hdr-wa{padding:8px 14px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0 6px}
/* hero */
.hero{background:linear-gradient(160deg,#f4faf7 0%,#e7f3ee 60%,#fdf6ea 100%);border-bottom:1px solid var(--line)}
.hero .wrap{display:grid;grid-template-columns:1.25fr .9fr;gap:40px;align-items:center;padding-top:56px;padding-bottom:56px}
.eyebrow{display:inline-block;font-size:14px;font-weight:700;color:var(--green-d);background:var(--green-l);padding:3px 12px;border-radius:99px;margin-bottom:10px}
.lead{font-size:19px;color:var(--text)}
.ticks{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:8px 18px;margin:14px 0 0;color:var(--muted);font-size:15px}
.ticks li:before{content:"✓ ";color:var(--green);font-weight:700}
.hero-card{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:22px}
.hero-card h2{font-size:18px;margin:0 0 10px}
.mini-table{width:100%;border-collapse:collapse;font-size:15px}
.mini-table td{padding:7px 4px;border-bottom:1px dashed var(--line)}
.mini-table td:last-child{text-align:right;font-weight:700;color:var(--ink)}
.pill{display:inline-block;font-size:13px;font-weight:700;padding:1px 10px;border-radius:99px}
.pill.ok{background:#e1f5e9;color:#15703f}.pill.warn{background:#fdf0dc;color:#9a5b07}.pill.bad{background:#fde6e6;color:#a32727}
/* page head */
.phead{background:linear-gradient(160deg,#f4faf7 0%,#e9f4ef 100%);border-bottom:1px solid var(--line);padding:26px 0 30px}
.tagline{font-size:18px;color:var(--muted);max-width:820px;margin:0}
.crumbs{list-style:none;padding:0;margin:0 0 10px;display:flex;flex-wrap:wrap;gap:4px;font-size:14px;color:var(--muted)}
.crumbs li:not(:last-child):after{content:"›";margin-left:6px;color:#9aa8b5}
.crumbs a{color:var(--muted);text-decoration:none}.crumbs a:hover{color:var(--green)}
/* layout */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:44px;padding-top:34px;padding-bottom:60px}
.content{min-width:0}
.content>h2:first-child{margin-top:0}
.side{position:relative}
.side .card{position:sticky;top:90px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}
.side .card h2{font-size:19px;margin:0 0 8px}
.side .card p{font-size:15px;color:var(--muted)}
.side .btn{width:100%;margin-top:8px}
.mini{list-style:none;padding:0;margin:14px 0 0;font-size:15px;color:var(--muted)}
.answer{background:var(--green-l);border-left:5px solid var(--green);border-radius:10px;padding:16px 20px;margin:0 0 22px}
.answer strong{display:block;color:var(--green-d);font-size:15px;margin-bottom:4px}
.answer p{margin:0;color:var(--ink);font-size:18px}
.toc{background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:10px 18px;margin:0 0 20px}
.toc summary{font-weight:700;cursor:pointer;color:var(--ink)}
.toc ol{margin:8px 0 4px;font-size:16px}
.toc a{text-decoration:none}
.note{font-size:14px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px;margin-top:30px}
.callout{background:#fff8ec;border:1px solid #f3dcb3;border-radius:10px;padding:14px 18px;margin:18px 0}
.callout strong{color:#8a5208}
table.data{width:100%;border-collapse:collapse;margin:8px 0 22px;font-size:15.5px;background:#fff}
table.data th,table.data td{border:1px solid var(--line);padding:9px 11px;text-align:left;vertical-align:top}
table.data th{background:var(--soft2);color:var(--ink);font-weight:700}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
ol.steps{counter-reset:s;list-style:none;padding:0}
ol.steps li{counter-increment:s;position:relative;padding:4px 0 12px 52px;margin:0}
ol.steps li:before{content:counter(s);position:absolute;left:0;top:4px;width:36px;height:36px;border-radius:50%;background:var(--green);color:#fff;font-weight:700;display:grid;place-items:center}
ol.steps b{display:block;color:var(--ink)}
.faq details{border:1px solid var(--line);border-radius:10px;margin:0 0 10px;background:#fff}
.faq summary{padding:13px 18px;font-weight:700;cursor:pointer;color:var(--ink);list-style:none;position:relative;padding-right:44px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";position:absolute;right:18px;top:10px;font-size:22px;color:var(--green)}
.faq details[open] summary:after{content:"–"}
.faq details>div{padding:0 18px 6px}
.band{background:var(--green);color:#fff;border-radius:14px;padding:24px 26px;display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin:32px 0}
.band h2{color:#fff;margin:0 0 4px;font-size:22px}
.band p{margin:0;color:#d8efe5}
.band.inline{margin:26px 0}
/* cards */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px;margin:16px 0 8px}
.card-link{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 18px 16px;text-decoration:none;color:var(--text);box-shadow:var(--shadow);transition:transform .15s,border-color .15s}
.card-link:hover{transform:translateY(-2px);border-color:var(--green);color:var(--text)}
.card-link h3{margin:0 0 6px;font-size:18px}
.card-link p{margin:0 0 8px;font-size:15px;color:var(--muted)}
.card-link .more{font-weight:700;color:var(--green);font-size:15px}
.card-link .tag{display:inline-block;font-size:12.5px;font-weight:700;background:var(--soft2);color:var(--green-d);border-radius:99px;padding:0 9px;margin-bottom:6px}
.block{padding:56px 0}
.block.alt{background:var(--soft)}
.center{text-align:center;max-width:820px;margin:0 auto}
.sub{color:var(--muted);font-size:17px}
.aud{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:20px}
.aud .card-link{padding:22px}
.aud .card-link.primary{border:2px solid var(--green)}
.why{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:20px}
.why>div{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.why h3{margin:0 0 6px}
.why p{margin:0;font-size:15.5px;color:var(--muted)}
/* tools */
.tool{background:#fff;border:2px solid var(--green-l);border-radius:14px;padding:20px;margin:6px 0 26px;box-shadow:var(--shadow)}
.tool h2{margin-top:0;font-size:21px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px 16px}
.field label{display:block;font-weight:600;font-size:15px;color:var(--ink);margin-bottom:3px}
.field input,.field select,.form input,.form select,.form textarea{width:100%;font:inherit;font-size:16px;padding:9px 11px;border:1px solid #c9d3dc;border-radius:8px;background:#fff;color:var(--ink)}
.field small{color:var(--muted);font-size:13.5px}
.result{background:var(--soft2);border-radius:10px;padding:14px 16px;margin-top:14px}
.result .big{font-size:26px;font-weight:700;color:var(--green-d)}
.result table{width:100%;border-collapse:collapse;font-size:15px;margin-top:6px}
.result td{padding:5px 0;border-bottom:1px dashed #c8ddd3}
.result td:last-child{text-align:right;font-weight:700}
.download{display:flex;gap:16px;align-items:center;background:#fff;border:1px solid var(--line);border-left:5px solid var(--gold);border-radius:12px;padding:16px 18px;margin:6px 0 24px;flex-wrap:wrap}
.download .ico{width:46px;height:46px;border-radius:10px;background:#1d6f42;color:#fff;display:grid;place-items:center;font-weight:700;flex:none}
.download div{flex:1;min-width:200px}
.download b{display:block;color:var(--ink)}
.download small{color:var(--muted)}
.form{display:grid;gap:10px}
.form label{font-weight:600;font-size:15px;color:var(--ink)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px}
.info-list{list-style:none;padding:0}
/* footer */
footer.site{background:var(--navy);color:#c9d6e2;margin-top:0;padding:44px 0 90px;font-size:15.5px}
footer.site h2{color:#fff;font-size:16px;margin:0 0 10px}
footer.site a{color:#e8eef4;text-decoration:none}
footer.site a:hover{color:#fff;text-decoration:underline}
footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
footer ul{list-style:none;padding:0;margin:0}
footer .legal{border-top:1px solid #2c4258;margin-top:28px;padding-top:16px;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;font-size:14px;color:#9fb1c2}
.wa-float{position:fixed;right:18px;bottom:20px;width:56px;height:56px;border-radius:50%;background:var(--wa);color:#fff;display:grid;place-items:center;box-shadow:0 6px 18px rgba(0,0,0,.2);z-index:60}
.wa-float svg{width:30px;height:30px}
.mbar{display:none}
/* demo */
.demo-toolbar{display:flex;gap:10px;flex-wrap:wrap;margin:10px 0 16px}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:12px 0 18px}
.stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.stat b{display:block;font-size:24px;color:var(--ink);line-height:1.2}
.stat span{font-size:14px;color:var(--muted)}
.tag-sheet{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:12px}
.qr-tag{border:1px dashed #9fb1c2;border-radius:10px;padding:10px;text-align:center;font-size:13px;background:#fff}
.qr-tag img{width:120px;height:120px;image-rendering:pixelated}
dialog{border:none;border-radius:14px;padding:22px;max-width:520px;width:calc(100% - 32px);box-shadow:0 20px 60px rgba(0,0,0,.25)}
dialog::backdrop{background:rgba(19,38,58,.45)}
video.scan{width:100%;border-radius:10px;background:#000;max-height:300px}
@media (max-width:980px){
  .hero .wrap{grid-template-columns:1fr;padding-top:36px;padding-bottom:36px}
  .layout{grid-template-columns:1fr;gap:10px}
  .side .card{position:static}
  .aud,.why{grid-template-columns:1fr 1fr}
  footer .cols{grid-template-columns:1fr 1fr}
  .stat-row{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  body{font-size:16.5px}
  .top .hide-s{display:none}
  .menu-toggle{display:block}
  nav.main{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;flex-direction:column;align-items:stretch;padding:8px 16px 14px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  nav.main.open{display:flex}
  .hdr-wa{display:none}
  .aud,.why,.grid2,.contact-grid{grid-template-columns:1fr}
  footer .cols{grid-template-columns:1fr}
  .wa-float{display:none}
  .mbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:60;background:#fff;border-top:1px solid var(--line)}
  .mbar a{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;padding:12px;font-weight:700;text-decoration:none;color:var(--ink)}
  .mbar a+a{background:var(--wa);color:#fff}
  .mbar svg{width:20px;height:20px}
  .band{padding:20px}
}
@media print{
  header.site,.top,footer.site,.wa-float,.mbar,.side,.cta-row,.band,.demo-toolbar,.no-print{display:none!important}
  .layout{display:block;padding:0}
  body{font-size:12pt}
}