:root{
  --navy:#123259;
  --navy-deep:#0C223E;
  --green:#0B6E4F;
  --gold:#E7A93C;
  --paper:#F4F5F7;
  --card:#FFFFFF;
  --line:#DDE1E6;
  --text:#2A3440;
  --text-soft:#5B6672;
  --radius:6px;
  --wrap:1140px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--paper);color:var(--text);font-family:'Hind Siliguri','Noto Sans Bengali',sans-serif;line-height:1.7;-webkit-font-smoothing:antialiased;}
h1,h2,h3{font-family:'Noto Sans Bengali','Hind Siliguri',sans-serif;font-weight:700;color:var(--navy-deep);margin:0;}
a{color:inherit;text-decoration:none;}
img,svg{display:block;max-width:100%;}
ul{margin:0;padding:0;list-style:none;}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px;}

.util-bar{background:var(--navy-deep);color:#C9D3DE;font-size:12.5px;}
.util-row{display:flex;justify-content:space-between;align-items:center;padding:8px 24px;max-width:var(--wrap);margin:0 auto;flex-wrap:wrap;gap:6px;}
.util-row a{opacity:.9;}
.util-row a:hover{opacity:1;text-decoration:underline;}
.util-contacts{display:flex;gap:18px;flex-wrap:wrap;}

.site-header{background:var(--card);border-bottom:1px solid var(--line);}
.header-row{display:flex;align-items:center;gap:18px;padding:18px 24px;max-width:var(--wrap);margin:0 auto;}
.emblem{width:64px;height:64px;border-radius:50%;border:2px solid var(--navy);display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:800;color:var(--navy);flex:none;background:#EFF3F8;font-family:'Noto Sans Bengali',sans-serif;}
.emblem-img{width:64px;height:64px;border-radius:50%;object-fit:cover;flex:none;border:2px solid var(--navy);}
.header-titles{flex:1;}
.header-titles h1{font-size:clamp(20px,2.6vw,28px);line-height:1.3;}
.header-titles p{margin:4px 0 0;font-size:13.5px;color:var(--text-soft);}
.header-badges{display:flex;gap:10px;flex:none;}
.badge{border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:12px;color:var(--navy);font-weight:600;white-space:nowrap;}

nav.main-menu{background:var(--navy);}
.menu-row{max-width:var(--wrap);margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 24px;}
.menu-list{display:flex;}
.menu-list li a{display:block;color:#EAF0F7;font-size:14.5px;font-weight:600;padding:15px 18px;border-bottom:3px solid transparent;transition:background .2s,border-color .2s;}
.menu-list li a:hover,.menu-list li a:focus-visible{background:rgba(255,255,255,.06);border-color:var(--gold);}
.menu-toggle{display:none;background:none;border:none;color:#fff;font-size:22px;padding:12px 6px;cursor:pointer;}

.ticker-bar{background:var(--gold);display:flex;align-items:center;overflow:hidden;}
.ticker-label{background:var(--navy-deep);color:#fff;font-size:13px;font-weight:700;padding:9px 18px;flex:none;white-space:nowrap;}
.ticker-track-wrap{overflow:hidden;flex:1;padding:9px 0;}
.ticker-track{display:flex;gap:60px;white-space:nowrap;animation:ticker 26s linear infinite;width:max-content;}
.ticker-track span{font-size:13.5px;color:#3A2A05;font-weight:600;}
@keyframes ticker{from{transform:translateX(0);}to{transform:translateX(-50%);}}
@media (prefers-reduced-motion:reduce){.ticker-track{animation:none;}html{scroll-behavior:auto;}}

.hero{position:relative;background:linear-gradient(180deg,rgba(12,34,62,.72),rgba(12,34,62,.86)),repeating-linear-gradient(120deg,#1B4B7D 0px,#1B4B7D 40px,#164070 40px,#164070 80px);color:#fff;padding:70px 0 96px;}
.hero-inner{max-width:760px;}
.hero .eyebrow{font-size:13px;letter-spacing:.05em;text-transform:uppercase;color:var(--gold);font-weight:700;}
.hero h2{color:#fff;font-size:clamp(28px,4vw,42px);margin:14px 0 12px;line-height:1.3;}
.hero p{color:#D8E1EA;font-size:16px;max-width:60ch;margin:0 0 26px;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:var(--radius);font-size:14px;font-weight:700;border:none;cursor:pointer;}
.btn-primary{background:var(--gold);color:#3A2A05;}
.btn-primary:hover,.btn-primary:focus-visible{background:#F0B958;}
.btn-outline{border:1.5px solid rgba(255,255,255,.55);color:#fff;background:transparent;}
.btn-outline:hover,.btn-outline:focus-visible{border-color:#fff;background:rgba(255,255,255,.08);}

.info-strip{max-width:var(--wrap);margin:0 auto;padding:0 24px;transform:translateY(-34px);}
.info-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.info-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 10px 24px -18px rgba(12,34,62,.45);padding:20px 18px;display:flex;gap:12px;align-items:flex-start;}
.info-card .ic{width:38px;height:38px;border-radius:8px;background:#EAF1EC;color:var(--green);display:flex;align-items:center;justify-content:center;flex:none;}
.info-card h3{font-size:14.5px;}
.info-card p{margin:3px 0 0;font-size:12.5px;color:var(--text-soft);}

section{padding:56px 0;}
.sec-alt{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-title{display:flex;align-items:center;gap:12px;margin-bottom:8px;}
.sec-title .bar{width:5px;height:22px;background:var(--green);border-radius:2px;}
.sec-title h2{font-size:22px;}
.sec-sub{color:var(--text-soft);font-size:14px;margin:6px 0 30px 17px;}

.principal-grid{display:grid;grid-template-columns:220px 1fr;gap:34px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px;}
.principal-photo{width:100%;aspect-ratio:1/1;border-radius:8px;background:#EAF0F7;border:1px dashed #B9C6D6;display:flex;align-items:center;justify-content:center;color:#8496AC;font-size:12.5px;text-align:center;padding:14px;}
.principal-photo-img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:8px;border:1px solid var(--line);}
.principal-quote{font-size:15.5px;line-height:1.85;margin:0;}
.principal-name{margin-top:16px;font-weight:700;color:var(--navy-deep);font-size:14.5px;}
.principal-name span{display:block;font-weight:500;color:var(--text-soft);font-size:13px;margin-top:2px;}

.about-box{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px;}
.about-box p{margin:0 0 14px;}
.about-box p:last-child{margin-bottom:0;}

.dept-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.dept-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;}
.dept-card .ic{width:42px;height:42px;border-radius:8px;background:#EAF1EC;display:flex;align-items:center;justify-content:center;margin-bottom:12px;font-size:20px;}
.dept-card h3{font-size:16.5px;margin-bottom:6px;}
.dept-card p{font-size:13.5px;color:var(--text-soft);margin:0;}

.notice-table{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;}
.notice-row{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:16px 20px;border-bottom:1px solid var(--line);font-size:14px;}
.notice-row:last-child{border-bottom:none;}
.notice-row .dot{width:7px;height:7px;border-radius:50%;background:var(--green);flex:none;margin-right:10px;}
.notice-row .txt{display:flex;align-items:center;}
.notice-row .txt a{color:var(--navy);text-decoration:underline;}
.notice-row .status{font-size:11px;color:#9A6B12;background:#FBF3E3;padding:4px 10px;border-radius:999px;white-space:nowrap;}

.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.gallery-item{aspect-ratio:4/3;background:#EAF0F7;border:1px dashed #B9C6D6;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:#8496AC;font-size:12.5px;text-align:center;padding:10px;}
.gallery-img{aspect-ratio:4/3;width:100%;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line);}

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.contact-box{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;}
.contact-box ul li{display:flex;gap:14px;padding:13px 0;border-bottom:1px solid var(--line);font-size:14.5px;}
.contact-box ul li:last-child{border-bottom:none;}
.contact-box .k{width:96px;flex:none;color:var(--navy);font-weight:700;font-size:12.5px;text-transform:uppercase;letter-spacing:.03em;padding-top:2px;}
.contact-box .v a{color:var(--navy);text-decoration:underline;}
.map-box{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;display:flex;flex-direction:column;}
.map-placeholder{flex:1;min-height:180px;border-radius:var(--radius);background:repeating-linear-gradient(0deg,#E7ECF1 0,#E7ECF1 1px,#F4F6F8 1px,#F4F6F8 24px),repeating-linear-gradient(90deg,#E7ECF1 0,#E7ECF1 1px,#F4F6F8 1px,#F4F6F8 24px);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--text-soft);font-size:13px;text-align:center;padding:16px;margin-top:14px;}
.map-embed{margin-top:14px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);}
.map-embed iframe{display:block;width:100%;min-height:240px;border:0;}

footer{background:var(--navy-deep);color:#B9C6D6;padding-top:46px;font-size:13.5px;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:34px;}
.foot-grid h4{color:#fff;font-size:14.5px;margin:0 0 14px;font-weight:700;}
.foot-grid p{color:#AEBBCA;line-height:1.8;margin:0;}
.foot-grid ul li{padding:6px 0;}
.foot-grid ul li a:hover{color:#fff;text-decoration:underline;}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:12.5px;color:#8FA0B4;max-width:var(--wrap);margin:0 auto;}
.dev-credit{color:var(--gold);font-weight:700;}
.dev-credit:hover{text-decoration:underline;}

@media (max-width:900px){
  .menu-list{position:absolute;top:100%;left:0;right:0;background:var(--navy);flex-direction:column;display:none;z-index:40;}
  .menu-list.open{display:flex;}
  .menu-toggle{display:block;}
  nav.main-menu{position:relative;}
  .principal-grid{grid-template-columns:1fr;}
  .principal-photo,.principal-photo-img{max-width:200px;}
  .dept-grid,.gallery-grid{grid-template-columns:repeat(2,1fr);}
  .info-grid{grid-template-columns:repeat(2,1fr);}
  .contact-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;}
  .header-row{flex-wrap:wrap;}
}
@media (max-width:520px){
  .dept-grid,.gallery-grid,.info-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;}
}