* {margin:0; padding:0; box-sizing:border-box;}
html {scroll-behavior:smooth;}
body {
  font-family:"Noto Sans Bengali", "Segoe UI", Arial, sans-serif;
  background: linear-gradient(120deg, #f5f6fa 60%, #e3f0ff 100%);
  color:#222;
  min-height:100vh;
  line-height:1.7;
}
h1,h2,h3,h4 {font-weight:700; letter-spacing:0.01em;}
a{text-decoration:none; color:inherit; transition:color 0.2s;}
ul,ol{list-style:none;}
img{max-width:100%; display:block;}
button, input, select, textarea {font-family:inherit;}
::-webkit-scrollbar {width:10px; background:#e3f0ff;}
::-webkit-scrollbar-thumb {background:#b2bec3; border-radius:8px;}