:root{
    --maroon-dark:#2C1B24;
    --maroon-mid:#3B2430;
    --ivory:#FBF3E7;
    --ivory-line:#e9ddc8;
    --text-dark:#2C1B24;
    --text-light:#F5EFE0;
    --text-muted:#c9b8a8;
    --gold:#C9A227;
    --marigold:#E8963C;
    --teal:#1F4B3F;
    --radius:6px;
    --maxw:1120px;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:'Hind Siliguri', sans-serif;
    color:var(--text-dark);
    background:var(--ivory);
    line-height:1.7;
  }
  h1,h2,h3,.display{
    font-family:'Tiro Bangla', serif;
    font-weight:400;
    margin:0;
  }
  a{text-decoration:none;color:inherit;}
  ul{list-style:none;margin:0;padding:0;}
  img{max-width:100%;display:block;}
  .container{max-width:var(--maxw); margin:0 auto; padding:0 28px;}
  .eyebrow{
    font-size:13px;
    letter-spacing:0.14em;
    text-transform:uppercase;
    color:var(--marigold);
    font-weight:600;
    display:inline-block;
    margin-bottom:14px;
  }
  .section{padding:96px 0;}
  .section-ivory{background:var(--ivory);}
  .section-dark{background:var(--maroon-dark); color:var(--text-light);}
  .section-mid{background:var(--maroon-mid); color:var(--text-light);}

  /* ---------- Header ---------- */
  header{
    position:fixed; top:0; left:0; right:0; z-index:100;
    background:rgba(44,27,36,0.92);
    backdrop-filter:blur(6px);
    border-bottom:1px solid rgba(201,162,39,0.25);
  }
  .nav-wrap{
    max-width:var(--maxw); margin:0 auto; padding:16px 28px;
    display:flex; align-items:center; justify-content:space-between;
  }
  .brand{display:flex; align-items:center; gap:12px;}
  .brand-mark{
    width:40px;height:40px;border-radius:50%;
    border:1.5px solid var(--gold);
    display:flex;align-items:center;justify-content:center;
    color:var(--gold); font-family:'Tiro Bangla',serif; font-size:19px;
    flex-shrink:0;
  }
  .brand-name{
    font-family:'Tiro Bangla', serif;
    color:var(--text-light);
    font-size:19px;
    line-height:1.2;
  }
  .brand-name span{
    display:block; font-family:'Hind Siliguri',sans-serif;
    font-size:11px; letter-spacing:0.08em; color:var(--marigold); margin-top:2px;
  }
  nav.links{display:flex; gap:30px;}
  nav.links a{
    color:var(--text-muted); font-size:15px; font-weight:500;
    transition:color .2s;
    position:relative;
  }
  nav.links a:hover{color:var(--gold);}
  .nav-toggle{display:none; background:none;border:none; color:var(--text-light); font-size:26px; cursor:pointer;}
  .btn{
    display:inline-block;
    padding:13px 28px;
    border-radius:2px;
    font-weight:600;
    font-size:15px;
    border:1.5px solid transparent;
    transition:all .25s ease;
    cursor:pointer;
  }
  .btn-gold{background:var(--gold); color:var(--maroon-dark);}
  .btn-gold:hover{background:var(--marigold);}
  .btn-outline{border-color:var(--gold); color:var(--text-light);}
  .btn-outline:hover{background:rgba(201,162,39,0.12);}

  /* ---------- Hero ---------- */
  .hero{
    min-height:100vh;
    background:var(--maroon-dark);
    color:var(--text-light);
    display:flex; flex-direction:column; justify-content:center;
    position:relative;
    overflow:hidden;
    padding-top:90px;
  }
  .hero-content{
    max-width:var(--maxw); margin:0 auto; padding:0 28px;
    position:relative; z-index:2;
    text-align:center;
  }
  .hero h1{
    font-size:clamp(38px, 6vw, 64px);
    color:var(--text-light);
    margin-bottom:18px;
    letter-spacing:0.01em;
  }
  .hero .tagline{
    font-size:clamp(16px,2.2vw,20px);
    color:var(--marigold);
    font-family:'Tiro Bangla',serif;
    font-style:italic;
    margin-bottom:34px;
  }
  .hero .lede{
    max-width:620px; margin:0 auto 42px auto;
    color:var(--text-muted);
    font-size:17px;
  }
  .hero-ctas{display:flex; gap:18px; justify-content:center; flex-wrap:wrap;}
  .banyan-wrap{
    position:absolute; bottom:0; left:0; right:0;
    opacity:0.35; z-index:1; pointer-events:none;
  }
  .est-badge{
    position:absolute; top:110px; right:6%;
    border:1px solid rgba(201,162,39,0.4);
    color:var(--text-muted);
    font-size:12px; letter-spacing:0.08em;
    padding:8px 14px; border-radius:50px;
    display:none;
  }
  @media(min-width:860px){.est-badge{display:block;}}

  /* ---------- About ---------- */
  .about-grid{
    display:grid; grid-template-columns:1.1fr 0.9fr; gap:64px; align-items:center;
  }
  .about-grid h2{font-size:clamp(28px,3.6vw,38px); margin-bottom:22px; color:var(--maroon-dark);}
  .about-grid p{color:#5b4a52; font-size:16.5px; margin-bottom:16px;}
  .quote-block{
    border-right:3px solid var(--marigold);
    padding:26px 30px;
    background:var(--maroon-dark);
    color:var(--text-light);
    font-family:'Tiro Bangla', serif;
    font-size:19px;
    font-style:italic;
    line-height:1.8;
    border-radius:2px;
  }
  .quote-block small{
    display:block; margin-top:14px; font-family:'Hind Siliguri',sans-serif;
    font-style:normal; font-size:13px; color:var(--marigold); letter-spacing:0.05em;
  }

  /* ---------- Mission cards ---------- */
  .mission-grid{
    display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
    background:rgba(201,162,39,0.25);
    border:1px solid rgba(201,162,39,0.25);
    margin-top:56px;
  }
  .mission-card{
    background:var(--maroon-dark);
    padding:38px 28px;
    text-align:right;
  }
  .mission-card .num{
    font-family:'Tiro Bangla',serif; color:var(--gold); font-size:26px; margin-bottom:18px; display:block;
  }
  .mission-card h3{color:var(--text-light); font-size:19px; margin-bottom:10px;}
  .mission-card p{color:var(--text-muted); font-size:14.5px; margin:0;}

  /* ---------- Activities ---------- */
  .section-head{text-align:center; max-width:640px; margin:0 auto 56px auto;}
  .section-head h2{font-size:clamp(28px,3.6vw,38px); color:var(--maroon-dark);}
  .section-head p{color:#6b5a62; margin-top:14px; font-size:16px;}
  .activity-grid{
    display:grid; grid-template-columns:repeat(3,1fr); gap:2px;
    background:var(--ivory-line);
  }
  .activity-card{
    background:var(--ivory);
    padding:40px 34px;
    transition:background .25s;
  }
  .activity-card:hover{background:#f3e9d7;}
  .activity-icon{
    width:46px; height:46px; border-radius:50%;
    border:1.5px solid var(--marigold);
    display:flex; align-items:center; justify-content:center;
    margin-bottom:20px; color:var(--marigold); font-size:20px;
  }
  .activity-card h3{font-size:19px; color:var(--maroon-dark); margin-bottom:10px;}
  .activity-card p{font-size:14.5px; color:#6b5a62; margin:0;}

  /* ---------- Stats ---------- */
  .stats-bar{
    display:grid; grid-template-columns:repeat(4,1fr);
    text-align:center;
  }
  .stat{padding:0 20px;}
  .stat .figure{
    font-family:'Tiro Bangla',serif; font-size:clamp(34px,4vw,48px); color:var(--gold);
  }
  .stat .label{font-size:13.5px; color:var(--text-muted); margin-top:8px; letter-spacing:0.03em;}

  /* ---------- Committee ---------- */
  .committee-grid{
    display:grid; grid-template-columns:repeat(4,1fr); gap:36px; margin-top:56px;
  }
  .member{text-align:center;}
  .avatar{
    width:104px; height:104px; border-radius:50%;
    background:var(--maroon-dark);
    color:var(--gold);
    display:flex; align-items:center; justify-content:center;
    font-family:'Tiro Bangla',serif; font-size:32px;
    margin:0 auto 18px auto;
    border:2px solid var(--marigold);
  }
  .member h3{font-size:17px; color:var(--maroon-dark);}
  .member p{font-size:13.5px; color:var(--marigold); margin-top:4px; font-weight:600;}

  /* ---------- Gallery ---------- */
  .gallery-grid{
    display:grid; grid-template-columns:repeat(4,1fr); grid-auto-rows:170px; gap:6px; margin-top:20px;
  }
  .gallery-grid div{
    background:linear-gradient(135deg, var(--maroon-mid), var(--teal));
    display:flex; align-items:center; justify-content:center;
    color:rgba(245,239,224,0.6); font-size:13px; text-align:center; padding:10px;
  }
  .gallery-grid div:nth-child(3n+1){background:linear-gradient(135deg, var(--maroon-dark), var(--maroon-mid));}
  .gallery-grid div:first-child{grid-column:span 2; grid-row:span 2;}

  /* ---------- Contact ---------- */
  .contact-grid{
    display:grid; grid-template-columns:0.9fr 1.1fr; gap:64px;
  }
  .contact-info h2{font-size:clamp(28px,3.6vw,36px); margin-bottom:20px;}
  .contact-info p{color:var(--text-muted); margin-bottom:28px;}
  .info-row{display:flex; gap:14px; margin-bottom:20px; align-items:flex-start;}
  .info-row .ic{color:var(--gold); font-size:18px; margin-top:2px;}
  .info-row div b{display:block; color:var(--text-light); font-size:15px;}
  .info-row div span{color:var(--text-muted); font-size:14.5px;}
  .form-panel{
    background:var(--ivory); border-radius:4px; padding:38px;
  }
  .form-panel h3{color:var(--maroon-dark); font-size:20px; margin-bottom:22px;}
  .field{margin-bottom:18px;}
  .field label{display:block; font-size:13.5px; color:#6b5a62; margin-bottom:7px; font-weight:600;}
  .field input, .field textarea{
    width:100%; padding:12px 14px; border:1px solid #d9cbb4; border-radius:2px;
    font-family:'Hind Siliguri',sans-serif; font-size:15px; background:#fff; color:var(--text-dark);
  }
  .field input:focus, .field textarea:focus{outline:2px solid var(--marigold); outline-offset:1px;}

  /* ---------- Footer ---------- */
  footer{background:var(--maroon-dark); color:var(--text-muted); padding:50px 0 24px 0;}
  .footer-top{
    display:flex; justify-content:space-between; flex-wrap:wrap; gap:30px;
    padding-bottom:34px; border-bottom:1px solid rgba(201,162,39,0.2); margin-bottom:24px;
  }
  .footer-top nav{display:flex; gap:26px; flex-wrap:wrap;}
  .footer-top nav a{font-size:14.5px; color:var(--text-muted);}
  .footer-top nav a:hover{color:var(--gold);}
  .footer-bottom{
    display:flex; justify-content:space-between; font-size:13px; flex-wrap:wrap; gap:10px;
  }

  /* ---------- Responsive ---------- */
  @media(max-width:900px){
    .about-grid, .contact-grid{grid-template-columns:1fr; gap:36px;}
    .mission-grid{grid-template-columns:repeat(2,1fr);}
    .activity-grid{grid-template-columns:repeat(2,1fr);}
    .committee-grid{grid-template-columns:repeat(2,1fr);}
    .stats-bar{grid-template-columns:repeat(2,1fr); row-gap:36px;}
    .gallery-grid{grid-template-columns:repeat(2,1fr);}
    .gallery-grid div:first-child{grid-column:span 2; grid-row:span 1;}
  }
  @media(max-width:640px){
    nav.links{
      position:fixed; top:73px; left:0; right:0; bottom:0;
      background:var(--maroon-dark);
      flex-direction:column; align-items:flex-start; gap:0;
      padding:10px 28px; transform:translateX(100%); transition:transform .3s ease;
    }
    nav.links.open{transform:translateX(0);}
    nav.links a{padding:16px 0; width:100%; border-bottom:1px solid rgba(201,162,39,0.15);}
    .nav-toggle{display:block;}
    .mission-grid, .activity-grid, .committee-grid{grid-template-columns:1fr;}
    .section{padding:64px 0;}
  }

/* ================= Inner pages shared ================= */
.page-hero{
  background:var(--maroon-dark);
  color:var(--text-light);
  padding:150px 0 70px 0;
  text-align:center;
}
.page-hero .eyebrow{display:block;}
.page-hero h1{font-size:clamp(30px,4.4vw,46px); color:var(--text-light); margin-bottom:14px;}
.page-hero p{color:var(--text-muted); max-width:560px; margin:0 auto; font-size:16px;}
.breadcrumb{
  margin-top:18px; font-size:13.5px; color:var(--text-muted);
}
.breadcrumb a{color:var(--marigold);}
.breadcrumb span{margin:0 6px; color:var(--text-muted);}

/* Timeline (About page) */
.timeline{position:relative; margin-top:20px; padding-right:2px;}
.timeline::before{
  content:''; position:absolute; top:0; bottom:0; right:7px; width:1px; background:rgba(201,162,39,0.35);
}
.tl-item{position:relative; padding:0 42px 42px 0; }
.tl-item::before{
  content:''; position:absolute; top:4px; right:0; width:15px; height:15px; border-radius:50%;
  background:var(--maroon-dark); border:2px solid var(--gold);
}
.tl-item .yr{font-family:'Tiro Bangla',serif; color:var(--marigold); font-size:20px; display:block; margin-bottom:6px;}
.tl-item p{color:#5b4a52; margin:0; font-size:15.5px;}

/* Long activity list (Activities page) */
.activity-long{
  display:grid; grid-template-columns:120px 1fr; gap:28px;
  padding:32px 0; border-bottom:1px solid var(--ivory-line);
  align-items:start;
}
.activity-long:last-child{border-bottom:none;}
.activity-long .tag{
  font-family:'Tiro Bangla',serif; color:var(--marigold); font-size:15px; letter-spacing:0.03em;
  border:1px solid var(--marigold); border-radius:2px; padding:8px 10px; text-align:center; height:fit-content;
}
.activity-long h3{font-size:21px; color:var(--maroon-dark); margin-bottom:10px;}
.activity-long p{color:#6b5a62; font-size:15.5px; margin:0;}

/* Committee groups (Committee page) */
.committee-group-title{
  font-size:14px; letter-spacing:0.1em; text-transform:uppercase; color:var(--marigold);
  font-weight:600; margin:56px 0 10px 0; border-bottom:1px solid var(--ivory-line); padding-bottom:14px;
}
.committee-group-title:first-of-type{margin-top:0;}

/* Full gallery */
.gallery-tabs{display:flex; gap:10px; justify-content:center; flex-wrap:wrap; margin-bottom:40px;}
.gallery-tabs span{
  font-size:13.5px; padding:9px 18px; border:1px solid var(--marigold); border-radius:50px; color:var(--marigold);
}
.full-gallery-grid{
  display:grid; grid-template-columns:repeat(4,1fr); grid-auto-rows:190px; gap:6px;
}
.full-gallery-grid div{
  background:linear-gradient(135deg, var(--maroon-mid), var(--teal));
  display:flex; align-items:center; justify-content:center;
  color:rgba(245,239,224,0.6); font-size:13px; text-align:center; padding:10px;
}
.full-gallery-grid div:nth-child(4n+2){background:linear-gradient(135deg, var(--maroon-dark), var(--maroon-mid));}
.full-gallery-grid div:nth-child(4n+3){background:linear-gradient(135deg, var(--teal), var(--maroon-mid));}

/* Contact page map */
.map-box{
  width:100%; height:340px; border-radius:4px; overflow:hidden;
  background:repeating-linear-gradient(45deg, var(--maroon-mid), var(--maroon-mid) 10px, var(--maroon-dark) 10px, var(--maroon-dark) 20px);
  display:flex; align-items:center; justify-content:center; color:var(--text-muted); font-size:14px; text-align:center; padding:20px;
}

/* Note box */
.note-box{
  background:#f3e9d7; border-right:3px solid var(--marigold); padding:16px 22px; border-radius:2px;
  font-size:14px; color:#6b5a62; margin-top:26px;
}

@media(max-width:640px){
  .activity-long{grid-template-columns:1fr;}
  .full-gallery-grid{grid-template-columns:repeat(2,1fr);}
}