:root{--ink:#10302D;--teal:#0B4F4A;--amber:#E8A33D;--bg:#F2F6F5;--line:#D5E0DD;--mute:#4B605D}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;font-family:'Hind Siliguri',sans-serif;font-size:18px;line-height:1.7;color:var(--ink);background:var(--bg)}
h1,h2,h3{font-family:'Noto Serif Bengali',serif;line-height:1.35;margin:0}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible{outline:3px solid var(--amber);outline-offset:3px}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 26px;border-radius:8px;font-weight:600;border:2px solid transparent}
.btn-amber{background:var(--amber);color:var(--ink)}
.btn-line{border-color:var(--teal)}
.btn-teal{background:var(--teal);color:#fff}
header{position:sticky;top:0;z-index:10;background:#fffffff2;border-bottom:1px solid var(--line)}
.bar{display:flex;flex-wrap:wrap;gap:8px 28px;align-items:center;justify-content:space-between;padding:10px 24px;max-width:1160px;margin:0 auto}
.logo{font-family:'Noto Serif Bengali',serif;font-weight:700;font-size:22px;display:flex;align-items:center;gap:10px}
.logo img{border-radius:50%;display:block}
.logo i{width:32px;height:32px;border-radius:8px;background:var(--teal);display:inline-block;position:relative}
.logo i:after{content:"";position:absolute;left:8px;top:8px;width:16px;height:16px;border-radius:4px;background:var(--amber)}
nav{display:flex;flex-wrap:wrap;gap:0 24px;font-weight:500}
nav a{padding:10px 0}
nav a:hover{color:var(--teal);text-decoration:underline}
section{padding:80px 0}
.hero{display:grid;grid-template-columns:1.2fr 1fr;gap:56px;align-items:center;padding:72px 0 88px}
.hero h1{font-size:50px}
.hero p{font-size:20px;color:var(--mute);max-width:520px;margin:20px 0 32px}
.cta{display:flex;flex-wrap:wrap;gap:14px}
.token{background:var(--teal);color:#fff;border-radius:14px;padding:32px;position:relative}
.token:before,.token:after{content:"";position:absolute;top:96px;width:28px;height:28px;border-radius:50%;background:var(--bg)}
.token:before{left:-14px}.token:after{right:-14px}
.token small{opacity:.8;font-size:16px}
.token h2{font-size:26px;margin:2px 0 40px}
.token a{display:block;padding:13px 0;border-top:1px dashed #ffffff66}
.token a:hover{color:var(--amber)}
h2.t{font-size:36px;margin-bottom:10px}
.sub{color:var(--mute);margin:0 0 36px;max-width:620px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:26px}
.card h3{font-size:21px;margin-bottom:8px}
.card p{margin:0;color:var(--mute);font-size:17px}
.services{background:#fff}
.services .card{background:var(--bg)}
.course{background:var(--teal);color:#fff;border:0}
.course p{color:#ffffffd9;margin-bottom:20px}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px;counter-reset:s}
.steps div{counter-increment:s;border-top:4px solid var(--amber);padding-top:16px}
.steps div:before{content:counter(s,bengali);font-family:'Noto Serif Bengali',serif;font-size:32px;font-weight:700;color:var(--teal)}
.steps h3{font-size:21px}.steps p{margin:6px 0 0;color:var(--mute)}
.why{background:#E4ECEA}
.why .grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.big{font-family:'Noto Serif Bengali',serif;font-size:44px;font-weight:700;color:var(--teal);line-height:1.2}
.contact{background:var(--teal);color:#fff;border-radius:16px;padding:48px}
.contact h2{font-size:34px;margin-bottom:10px}
.contact p{margin:0 0 24px;color:#ffffffd9}
.info{margin-top:28px;line-height:2;color:#ffffffe6}
footer{padding:28px 0 40px;font-size:15px;color:var(--mute)}
.rate{display:inline-flex;flex-wrap:wrap;align-items:center;gap:4px 10px;margin:0 0 28px;padding:8px 16px;background:#fff;border:1px solid var(--line);border-radius:99px;font-weight:500;font-size:16px}.rate b{color:#C77D0A;letter-spacing:2px}
.fixed{display:none}
@media(max-width:820px){
.hero{grid-template-columns:1fr;gap:40px;padding:44px 0 56px}.hero h1{font-size:36px}
section{padding:56px 0}h2.t{font-size:29px}.contact{padding:32px 24px}
.fixed{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:20;background:#fff;border-top:1px solid var(--line);padding:8px;gap:8px}
.fixed a{flex:1;min-height:48px;display:flex;align-items:center;justify-content:center;border-radius:8px;font-weight:600}
body{padding-bottom:68px}}
.top{position:fixed;right:20px;bottom:24px;z-index:15;width:50px;height:50px;border-radius:50%;border:0;background:var(--teal);color:#fff;display:none;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 2px 10px #0003}
.top.show{display:flex}.top:hover{background:var(--amber);color:var(--ink)}
@media(max-width:820px){.top{bottom:84px;right:14px}}
@counter-style bengali{system:numeric;symbols:"০" "১" "২" "৩" "৪" "৫" "৬" "৭" "৮" "৯"}

a.card{display:block;transition:border-color .15s}
a.card:hover{border-color:var(--teal)}
a.card h3:after{content:" ›";color:var(--amber)}
.page-hero{padding:56px 0 24px}
.page-hero h1{font-size:27px}
.page-hero p{font-size:17px;color:var(--mute);max-width:640px;margin:12px 0 24px}
.crumb{font-size:16px;color:var(--mute);margin-bottom:12px}
.crumb a{text-decoration:underline}
.list{margin:0;padding-left:1.2em;max-width:680px}
.list li{margin:6px 0}
.note{background:#fff;border:1px solid var(--line);border-left:5px solid var(--amber);border-radius:8px;padding:20px 24px;max-width:720px}
.note p{margin:0}
.more{display:flex;flex-wrap:wrap;gap:10px}
.more a{border:1px solid var(--line);background:#fff;border-radius:99px;padding:6px 18px;font-weight:500}
.more a:hover{border-color:var(--teal);color:var(--teal)}
@media(max-width:820px){.page-hero h1{font-size:24px}}
.tb{background:#06332F;color:#fff;font-size:15px}.tb .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:2px 20px;padding-top:6px;padding-bottom:6px}.tb .r{display:flex;flex-wrap:wrap;gap:2px 18px;margin-left:auto}.tb a:hover{text-decoration:underline}
.sl{position:relative;aspect-ratio:4/3;border-radius:14px;overflow:hidden;background:var(--teal)}.sl img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .6s}.sl img.on{opacity:1}
.g4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card.im{padding:0;overflow:hidden;display:block}.card.im img{width:100%;height:150px;object-fit:cover;display:block}.card.im .tx{padding:16px 20px 20px}
.ph0{height:150px;display:flex;align-items:center;justify-content:center;font-size:48px;background:#E4ECEA}.course .ph0{background:#0f6560}.course.im p{margin:0}
.cols2{display:grid;grid-template-columns:2fr 1fr;gap:24px}
.pn{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px}.pn h3{font-size:22px;margin-bottom:12px}.pn ul{list-style:none;margin:0;padding:0}.pn li{padding:10px 0;border-top:1px solid var(--line)}.pn li:first-child{border-top:0}.pn a:hover{text-decoration:underline;color:var(--teal)}
.nd{display:inline-block;background:var(--teal);color:#fff;border-radius:6px;font-size:14px;padding:0 10px;margin-right:10px}
.dl li{display:flex;justify-content:space-between;gap:12px;align-items:center}.xt{text-transform:uppercase;font-size:13px;font-weight:600;background:var(--amber);padding:0 8px;border-radius:4px;margin-right:8px}
.why .grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}.why .card{padding:32px}.why .card p{font-size:18px}
.fl{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px}footer a{text-decoration:underline}
@media(max-width:980px){.g4{grid-template-columns:1fr 1fr}}
@media(max-width:820px){.cols2{grid-template-columns:1fr}}
@media(max-width:420px){.g4{grid-template-columns:1fr}}
.wrap.hero,.wrap.page-hero{padding-left:24px;padding-right:24px}

.logo{gap:12px}.bn{display:flex;flex-direction:column;line-height:1.15}.bn b{font-family:'Noto Serif Bengali',serif;font-size:29px;color:var(--teal)}.bn b:after{content:"";display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--amber);margin-left:6px}.bn small{font-size:13px;font-weight:600;color:var(--mute);border-top:2px solid var(--amber);margin-top:3px;padding-top:2px}
.vf{position:relative;aspect-ratio:16/9;border-radius:14px;overflow:hidden;background:#000}.vf iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.vbox{max-width:760px;margin:40px auto 0}.vbox h3{text-align:center;font-size:24px;margin-bottom:14px}
.nw{background:#c62828;color:#fff;border-radius:4px;font-size:12px;padding:0 6px;margin-left:6px}
.why{padding:40px 0}.why h2.t{font-size:28px;margin-bottom:20px}.why .grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,170px),1fr));gap:14px}.why .card{padding:18px 14px;text-align:center}.why .big{font-size:23px;line-height:1.5;overflow-wrap:anywhere}.why .card p{font-size:15px;line-height:1.55;margin:4px 0 0;overflow-wrap:anywhere}
@media(max-width:560px){.why .grid{grid-template-columns:1fr 1fr}.why .big{font-size:21px}.bn b{font-size:24px}.bn small{font-size:11px}}

.bn small{border-top:0;border-bottom:2px solid var(--amber);line-height:1.5;margin-top:0;padding:2px 0 3px}
.wrap.hero{padding-top:28px;padding-bottom:44px}.wrap.page-hero{padding-top:24px;padding-bottom:0}.page-hero p{margin:8px 0 16px}.page-hero h1{margin-top:0}
.services a.course.card,a.course.card{background:var(--teal);color:#fff;border:0}.services a.course.card h3,a.course.card h3{color:#fff}.course.im p{color:#ffffffd9}
footer{background:#06332F;color:#ffffffd9;border-top:5px solid var(--amber);padding:0;font-size:16px}
.fc{display:grid;grid-template-columns:1.4fr 1.3fr;gap:32px;padding-top:36px;padding-bottom:28px}
footer h4{color:#fff;font-family:'Noto Serif Bengali',serif;font-size:19px;margin:0 0 12px;padding-bottom:6px;border-bottom:2px solid var(--amber);display:inline-block}
footer p{margin:0 0 8px}footer a{display:block;text-decoration:none;padding:2px 0}footer a:hover{color:var(--amber)}
.cp{background:#052a27;text-align:center;padding:12px 24px;font-size:14px}
@media(max-width:820px){.fc{grid-template-columns:1fr;gap:20px}.wrap.hero{padding-top:20px;padding-bottom:32px}}

nav{gap:0 18px}.tb .r a{display:inline-flex;align-items:center;gap:6px}
.ab{display:grid;grid-template-columns:200px 1fr;gap:28px;align-items:center}.ab img{width:180px;height:180px;border-radius:50%;object-fit:cover;border:4px solid var(--amber)}.ab h2{font-size:30px}.ab .rl{color:var(--teal);font-weight:600;margin:0 0 10px}
.chips span{display:inline-block;background:var(--bg);border:1px solid var(--line);border-radius:99px;padding:2px 16px;margin:4px 6px 4px 0}
.pn ul.tl li{border-top:0;border-left:3px solid var(--amber);padding:4px 0 4px 16px;margin:12px 0}.tl b{display:block;color:var(--teal)}
@media(max-width:820px){.ab{grid-template-columns:1fr;text-align:center}.ab img{margin:0 auto}}

.mapf{position:relative;aspect-ratio:16/9;min-height:280px;border-radius:12px;overflow:hidden;background:#E4ECEA}.mapf iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.cols11{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}.cols11 .mapf{aspect-ratio:auto;height:380px}@media(max-width:820px){.cols11{grid-template-columns:1fr}.cols11 .mapf{height:300px}}

.fc{grid-template-columns:1.3fr 1.2fr 1fr}
.rt p{margin:0 0 12px}.rt h2,.rt h3,.rt h4{margin:18px 0 8px}.rt ul,.rt ol{margin:0 0 14px;padding-left:1.4em}.rt li{margin:4px 0}.rt a{color:var(--teal);text-decoration:underline}
.rt table{border-collapse:collapse;width:100%;margin:12px 0;background:#fff}.rt td,.rt th{border:1px solid var(--line);padding:8px 12px;text-align:left}.rt th{background:#E4ECEA}
.rt blockquote{margin:12px 0;padding:8px 18px;border-left:4px solid var(--amber);background:#fff}
.rt .pblk{border:1px solid var(--line);border-left:5px solid var(--amber);border-radius:10px;padding:16px 20px;margin:20px 0;background:#fff;overflow-x:auto}.rt .pblk h3{margin-top:0}
.pbtn{float:right;margin:0 0 8px 12px;background:var(--teal);color:#fff;border:0;border-radius:6px;padding:4px 14px;font:inherit;font-size:15px;cursor:pointer}
.cols11{align-items:stretch}.fl2{display:flex;flex-direction:column}.fl2 .fbf{flex:1;min-height:300px;margin-top:14px;border-radius:12px;overflow:hidden;background:#E4ECEA}.fl2 .fbf iframe{width:100%;height:100%;min-height:300px;border:0;display:block}.cols11 .fl2 .mapf{flex:1;height:auto;min-height:380px}
@media(max-width:820px){.cols11 .fl2 .mapf{min-height:300px}.fl2 .fbf{min-height:420px}}
#pa{display:none}
@media print{body>*:not(#pa){display:none!important}body{background:#fff}#pa{display:block;color:#000;font-size:14pt}#pa .pbtn{display:none}.lhd{text-align:center;border-bottom:3px double #0B4F4A;padding-bottom:10px;margin-bottom:20px}.lhd h1{font-family:'Noto Serif Bengali',serif;font-size:22pt;color:#0B4F4A;margin:0 0 4px}.lhd p{margin:2px 0;font-size:11pt}#pa .pblk{border:0;padding:0;margin:0;background:none}#pa table{border-collapse:collapse;width:100%}#pa td,#pa th{border:1px solid #444;padding:6px 8px;text-align:left}#pa th{background:#eee}.pf{margin-top:28px;font-size:10pt;color:#555;border-top:1px solid #aaa;padding-top:6px}@page{margin:16mm}}

.more a.on{background:var(--teal);color:#fff;border-color:var(--teal)}.cch{margin-bottom:4px}
.ct{display:inline-block;background:#E4ECEA;color:var(--teal);border-radius:4px;font-size:13px;padding:0 8px;margin:0 8px 0 0}
/* v13: এডিটরের নতুন ফরম্যাট (সাইটে ও প্রিন্টে) */
.rt h2,#pa h2{font-size:1.5em}.rt h3,#pa h3{font-size:1.25em}.rt h4,#pa h4{font-size:1.08em}.rt hr,#pa hr{border:0;border-top:2px solid var(--line,#ccc);margin:18px 0}
.rt mark,#pa mark{background:#fff3a3}.rt sup,.rt sub,#pa sup,#pa sub{font-size:.75em}.rt s,#pa s{text-decoration:line-through}
.rt .al-c,#pa .al-c{text-align:center}.rt .al-r,#pa .al-r{text-align:right}.rt .al-j,#pa .al-j{text-align:justify}
.rt .c-red,#pa .c-red{color:#c62828}.rt .c-green,#pa .c-green{color:#1b7a3d}.rt .c-blue,#pa .c-blue{color:#1a56b0}.rt .c-orange,#pa .c-orange{color:#c25e00}.rt .c-gray,#pa .c-gray{color:#5b6b69}
.rt .fs-s,#pa .fs-s{font-size:.85em}.rt .fs-l,#pa .fs-l{font-size:1.3em}
.rt blockquote,#pa blockquote{margin:12px 0;padding:6px 16px;border-left:4px solid #E8A33D}

/* v15: হোমপেজ স্লাইডার, সেবার স্ক্রোল ও মার্কি */
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.hl{min-width:0}.hbt{margin:0 0 16px}.hbt .btn{flex:1 1 auto}
.sl0{display:flex;align-items:center;padding:32px;color:#fff}.sl0 h1{font-size:34px;color:#fff}.sl0 p{color:#ffffffd9;font-size:18px;margin:12px 0 0}
.token{min-width:0}
.vm{height:270px;overflow:hidden;-webkit-mask-image:linear-gradient(transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(transparent,#000 8%,#000 92%,transparent)}
.vt.go{animation:vtm var(--d,40s) linear infinite}
.vm:hover .vt,.vm:focus-within .vt{animation-play-state:paused}
@keyframes vtm{to{transform:translateY(-50%)}}
.vm:not(:has(.go)){overflow-y:auto}
.token .vmore{display:inline-block;margin-top:14px;padding:0;border:0;font-weight:600;color:var(--amber)}
.token .vmore:hover{text-decoration:underline}
.mq{overflow:hidden;padding:4px 0;-webkit-mask-image:linear-gradient(90deg,transparent,#000 24px,#000 calc(100% - 24px),transparent);mask-image:linear-gradient(90deg,transparent,#000 24px,#000 calc(100% - 24px),transparent)}
.mt{display:flex;width:max-content;animation:mqm var(--d,60s) linear infinite}
.mg{display:flex}
.mi{flex:0 0 280px;width:280px;margin-right:20px;display:flex}.mi .card{width:100%}
.mq:hover .mt,.mq:focus-within .mt,.mq:active .mt{animation-play-state:paused}
@keyframes mqm{to{transform:translateX(-50%)}}
.card.mo{display:flex;flex-direction:column;justify-content:center;text-align:center;background:var(--amber);color:var(--ink);border:0}.card.mo p{color:var(--ink);opacity:.8}
.services .card.mo{background:var(--amber)}
@media(max-width:560px){.mi{flex-basis:240px;width:240px}.vm{height:240px}.sl0 h1{font-size:26px}}
@media(prefers-reduced-motion:reduce){.vt.go,.mt{animation:none}.vm{overflow-y:auto}.mq{overflow-x:auto}}
.token h2{margin:2px 0 18px}

/* v16: ৭৫%/২৫% হিরো, ভাসমান বাটন, কোর্স বাম থেকে ডানে */
.hero{gap:12px;align-items:stretch}
.slw{position:relative}
.hbt{position:absolute;top:14px;left:14px;right:14px;z-index:3;margin:0;flex-wrap:nowrap;gap:10px;pointer-events:none}
.hbt .btn{pointer-events:auto;flex:0 1 auto;min-height:44px;padding:0 20px;box-shadow:0 4px 14px #0005}
.token{display:flex;flex-direction:column;padding:22px 20px}.token:before,.token:after{display:none}
.token h2{font-size:22px}.token a{padding:11px 0;font-size:17px}
.token .vm{flex:1 1 0;height:0;min-height:230px}
@media(min-width:821px){.hero{grid-template-columns:3fr 1fr}.slw .sl{aspect-ratio:16/9}}
@media(max-width:820px){.hero{gap:12px}}
@media(max-width:560px){.hbt{top:8px;left:8px;right:8px;gap:8px}.hbt .btn{flex:1 1 0;min-height:38px;padding:0 10px;font-size:14px}}
.mq.rv .mt{animation-name:mqr}
@keyframes mqr{from{transform:translateX(-50%)}to{transform:translateX(0)}}

/* v17: বাটন ডানে নিচে, রেটিং বামে নিচে (স্লাইডারের উপরে ভাসমান) */
.hbt{top:auto;bottom:14px;left:auto;right:14px;justify-content:flex-end}
.rate.rf{position:absolute;left:14px;bottom:14px;z-index:3;margin:0!important;box-shadow:0 4px 14px #0005}
.sl0{padding-bottom:84px}
.hbt .btn{white-space:nowrap}
@media(max-width:560px){.hbt{bottom:8px;left:8px;right:8px}.hbt .btn{font-size:13px;padding:0 8px}.rate.rf{left:8px;bottom:54px;font-size:14px;padding:6px 12px}}