:root{
  --deep:#0a3b3a; --river:#14766b; --paddy:#7cc47f; --sun:#ef5b3c; --jute:#e8c27a; --mist:#f3f7f4;
  --head:"Anek Bangla","Hind Siliguri",system-ui,sans-serif;
  --body:"Hind Siliguri",system-ui,"Noto Sans Bengali",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;min-height:100vh;background:var(--deep);color:var(--mist);font:400 1.05rem/1.7 var(--body)}
a{color:inherit;text-decoration:none}
:focus-visible{outline:3px solid var(--jute);outline-offset:3px}

/* Background: slow drifting light, the one moving thing on the page */
.scene{position:fixed;inset:0;overflow:hidden;z-index:-1;
  background:linear-gradient(160deg,#0a3b3a 0%,#0f5a52 55%,#14766b 100%)}
.scene i{position:absolute;border-radius:50%;filter:blur(70px);opacity:.75;animation:drift 26s ease-in-out infinite alternate}
.scene i:nth-child(1){width:46vmax;height:46vmax;left:-10vmax;top:-12vmax;background:var(--paddy)}
.scene i:nth-child(2){width:34vmax;height:34vmax;right:-8vmax;top:18vh;background:var(--sun);opacity:.55;animation-duration:32s}
.scene i:nth-child(3){width:40vmax;height:40vmax;left:25vw;bottom:-22vmax;background:var(--jute);opacity:.45;animation-duration:38s}
@keyframes drift{to{transform:translate(8vmax,6vmax) scale(1.15)}}

/* Liquid glass */
.glass{
  background:linear-gradient(135deg,rgba(255,255,255,.24),rgba(255,255,255,.07));
  -webkit-backdrop-filter:blur(18px) saturate(1.7);backdrop-filter:blur(18px) saturate(1.7);
  border:1px solid rgba(255,255,255,.26);
  box-shadow:inset 0 1.5px 0 rgba(255,255,255,.55),inset 0 -1px 0 rgba(255,255,255,.1),0 18px 44px rgba(3,30,28,.3);
}

.nav{position:sticky;top:12px;z-index:5;margin:12px auto 0;width:min(1100px,calc(100% - 24px));
  display:flex;align-items:center;gap:16px;padding:8px 10px 8px 22px;border-radius:999px}
.brand{font:800 1.25rem var(--head);letter-spacing:.02em}
.nav nav{display:flex;gap:2px;margin-left:auto;overflow-x:auto;scrollbar-width:none}
.nav nav a{padding:6px 13px;border-radius:999px;white-space:nowrap;font-weight:500;transition:background .2s}
.nav nav a:hover{background:rgba(255,255,255,.2)}
#lang{font:500 .9rem var(--body);color:var(--mist);cursor:pointer;padding:7px 15px;border-radius:999px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3)}

main{width:min(1100px,calc(100% - 32px));margin:0 auto}
.hero{display:grid;grid-template-columns:1.25fr 1fr;gap:40px;align-items:center;padding:clamp(48px,10vh,110px) 0 60px}
.kicker{margin:0 0 10px;color:var(--jute);font-weight:500}
h1{font:800 clamp(2.3rem,6vw,4.4rem)/1.12 var(--head);margin:0 0 18px;text-wrap:balance}
.lead{max-width:34rem;margin:0 0 28px;font-size:1.15rem;opacity:.92}
.actions{display:flex;flex-wrap:wrap;gap:12px}
.btn{padding:12px 24px;border-radius:16px;font-weight:500;transition:transform .15s}
.btn:active{transform:scale(.97)}
.btn.solid{background:var(--sun);color:#fff;box-shadow:0 8px 22px rgba(239,91,60,.4)}

.notices{padding:26px 26px 14px;border-radius:30px}
.notices h2{font:800 1.3rem var(--head);margin:0 0 6px}
.notices ul{list-style:none;margin:0;padding:0}
.notices li{padding:13px 0;border-top:1px solid rgba(255,255,255,.2);display:grid;gap:2px}
.notices li:first-child{border-top:0}
.notices time{font-size:.88rem;color:var(--jute)}
.notices li a:hover{text-decoration:underline;text-underline-offset:4px}

.classes{padding:20px 0 70px}
.classes h2{font:800 1.6rem var(--head);margin:0 0 20px}
.row{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.row a{padding:22px 10px;border-radius:20px;text-align:center;font:500 1.1rem var(--head);transition:transform .2s}
.row a:hover{transform:translateY(-4px)}

.foot{width:min(1100px,calc(100% - 24px));margin:0 auto 14px;padding:18px 26px;border-radius:26px;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between}
.foot p{margin:0}
.foot a{text-decoration:underline;text-underline-offset:4px}

@media (max-width:820px){
  .hero{grid-template-columns:1fr;gap:32px}
  .row{grid-template-columns:repeat(2,1fr)}
  .row a:last-child{grid-column:1/-1}
  .nav{border-radius:28px}
}
@media (prefers-reduced-motion:reduce){.scene i{animation:none}*{transition:none!important}}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .glass{background:rgba(10,59,58,.85)}
}