*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{margin:0;background:#f5f6f7;color:#222;font-family:"Noto Sans Bengali","Nirmala UI",sans-serif;font-size:14px;line-height:1.55}
a{text-decoration:none;color:inherit}
button,input{font:inherit}
.container{max-width:1260px;margin:auto;padding:0 10px}
.header{background:#fff;border-bottom:1px solid #d6d6d6;position:sticky;top:0;z-index:1000}
.header-inner{min-height:60px;display:flex;align-items:center;gap:12px;padding-top:7px;padding-bottom:7px}
.logo{font-size:19px;font-weight:800;color:#12628d;white-space:nowrap;flex-shrink:0}
.logo:before{content:"";display:inline-block;width:4px;height:23px;background:#12628d;margin-right:8px;vertical-align:-4px}
.logo span{color:#111}
.nav-search{flex:1;display:flex;max-width:640px;min-width:120px}
.nav-search input{width:100%;height:39px;border:1px solid #c8c8c8;border-right:0;border-radius:4px 0 0 4px;padding:0 12px;font-size:13px;outline:0;background:#fff;min-width:0}
.nav-search input:focus{border-color:#4787a8}
.nav-search button{width:74px;height:39px;border:0;border-radius:0 4px 4px 0;background:#12628d;color:#fff;cursor:pointer;flex-shrink:0}
.nav{display:flex;gap:3px;margin-left:auto;flex-shrink:0}
.nav a{padding:6px 7px;color:#555;font-size:11px;border-radius:4px}
.nav a:hover{background:#edf4f7;color:#12628d}
.nav-toggle{display:none;border:1px solid #d5dfe4;background:#fff;color:#12628d;width:40px;height:40px;border-radius:6px;cursor:pointer;align-items:center;justify-content:center;font-size:21px;line-height:1;flex:0 0 40px}
.footer{background:#20272b;color:#aaa;margin-top:15px;padding:16px 0 20px;border-top:1px solid rgba(255,255,255,0.05)}
.footer-inner{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;flex-wrap:wrap}
.footer-brand{flex:0 1 auto;max-width:60%}
.footer-brand h3{font-size:15px;color:#eee;margin:0 0 4px;font-weight:600}
.footer-brand p{font-size:12px;line-height:1.5;margin:3px 0;color:#b0b8be}
.footer-brand p:last-child{font-size:11px;color:#8a949c;margin-top:4px}
.footer-links{display:flex;flex-wrap:wrap;gap:6px 14px;flex:0 1 auto;padding-top:2px}
.footer-links a{color:#c8d0d6;font-size:12px;text-decoration:none;transition:color 0.2s;white-space:nowrap}
.footer-links a:hover{color:#fff;text-decoration:underline}
@media(max-width:1050px){.nav-toggle{display:flex;margin-left:0}.nav-search{order:2;flex:1 1 auto;max-width:300px;margin-left:auto}.nav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-top:1px solid #e6eaed;border-bottom:1px solid #d6d6d6;padding:8px 10px;box-shadow:0 5px 14px rgba(0,0,0,.06);z-index:1001}.nav.open{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:5px}.nav a{display:block;text-align:center;padding:8px 6px;font-size:12px;border:1px solid #e4eaed;background:#f9fbfc}.nav a:hover{background:#edf4f7}}
@media(max-width:800px){.header-inner{min-height:52px}.logo{font-size:17px}.nav-search button{width:55px}}
@media(max-width:700px){.header-inner{display:grid;grid-template-columns:auto 1fr auto;gap:6px;min-height:52px;padding-top:6px;padding-bottom:6px;align-items:center}.logo{grid-column:1;grid-row:1;font-size:15px;min-width:0;overflow:hidden;text-overflow:ellipsis}.logo:before{height:20px;width:3px;margin-right:5px}.nav-search{grid-column:2;grid-row:1;min-width:0;max-width:none;width:100%;margin:0;flex:1 1 auto}.nav-search input{height:36px;font-size:11px;padding:0 8px;border-radius:5px 0 0 5px;min-width:0;width:100%}.nav-search button{height:36px;width:44px;font-size:0;padding:0;border-radius:0 5px 5px 0;flex-shrink:0}.nav-search button::after{content:"⌕";font-size:18px;line-height:1}.nav-toggle{grid-column:3;grid-row:1;width:40px;height:40px;margin:0;flex:0 0 40px}.nav{top:100%;padding:8px 7px}.nav.open{grid-template-columns:repeat(3,minmax(0,1fr))}.footer{padding:14px 0 18px}.footer-inner{flex-direction:column;gap:10px}.footer-brand{max-width:100%;width:100%}.footer-brand h3{font-size:14px}.footer-brand p{font-size:11px}.footer-links{width:100%;gap:4px 12px;padding-top:4px;border-top:1px solid rgba(255,255,255,0.06)}.footer-links a{font-size:11px;padding:2px 0}}
@media(max-width:600px){.container{padding:0 7px}.header-inner{grid-template-columns:auto 1fr auto;gap:4px}.logo{font-size:13px}.nav-search input{font-size:10px;height:34px}.nav-search button{height:34px;width:40px}.nav-toggle{width:36px;height:36px;font-size:18px}}
@media(max-width:390px){.nav.open{grid-template-columns:repeat(2,minmax(0,1fr))}.header-inner{gap:3px}.logo{font-size:12px}.nav-search input{font-size:9px;padding:0 5px}.nav-search button{width:34px;font-size:0}.nav-toggle{width:32px;height:32px;font-size:16px}}
@media(max-width:400px){.footer{padding:12px 0 16px}.footer-brand h3{font-size:13px}.footer-brand p{font-size:10px;line-height:1.4}.footer-links{gap:3px 10px}.footer-links a{font-size:10px}}