:root{--green:#1bb57b;--navy:#124265;--ink:#25374a;--muted:#687788;--cream:#f7f5f2;--line:#e3e9e8}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font:16px/1.65 system-ui,-apple-system,"Noto Sans Bengali",sans-serif;background:#fff}a{color:inherit;text-decoration:none}a:hover{color:var(--green)}img{max-width:100%;display:block}.wrap{width:min(1180px,calc(100% - 36px));margin-inline:auto}.topbar{background:var(--navy);color:#e4f6f1;font-size:.78rem;padding:5px 0}.topbar .wrap{display:flex;justify-content:space-between}.site-header{background:#fff;position:sticky;top:0;z-index:10;box-shadow:0 3px 20px #183f5112}.nav{display:flex;align-items:center;justify-content:space-between;gap:22px;min-height:78px}.brand img{width:190px;max-height:60px}.nav nav{display:flex;align-items:center;gap:22px;font-weight:600;font-size:.91rem}.nav nav 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