:root {
      --main-width: 1000px;
      --bg-color: #262421;
      --side-bg: #171512;
      --text-color: #bababa;
    }

    html, body {
      margin: 0;
      padding: 0;
      background-color: var(--side-bg);
      font-family: 'Open Sans', sans-serif;
      color: var(--text-color);
      display: flex;
      justify-content: center;
	  flex-direction: column;
	  -webkit-tap-highlight-color: transparent;
    }
    a, button { -webkit-tap-highlight-color: transparent; }
	body.loading {
	  visibility: hidden;
	}

	body.loaded {
	  visibility: visible;
	  transition: visibility 0s ease 0.05s;
	}
    .container {
      max-width: var(--main-width);
      width: 100%;
      background-color: var(--bg-color);
      padding: 10px 30px;
      box-sizing: border-box;
      margin: 20px 0;
	  border-radius: 18px;
    }
    @media (max-width: 768px) {
      .container {
		padding: 10px 1px;
      }
    }

    h1 {
      <!-- font-family: 'Roboto', sans-serif; -->
	  font-family: 'Tiro Bangla', serif;
      font-size: 2.5em;
      margin-bottom: 40px;
	  margin-top: 40px;
      text-align: center;
	  letter-spacing: 0.05em;
	  padding: 20px;
    }
	
	h2 {
	  font-family: 'Tiro Bangla', serif;
	  font-weight: 400;
	  text-align: justify;
	}
	
    .categories {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      font-size: 0.9em;
      margin-bottom: 10px;
	  padding: 20px;
	  user-select: none;
    }
	.cat-item {
	  display: inline-flex;
	  justify-content: center;
	  align-items: center;
	  gap: 5px;
	  background: #262421;
	  padding: 5px 10px;
	  border-radius: 4px;
	  font-family: 'Open Sans', sans-serif;
	  user-select: none;
	  white-space: nowrap;
	  flex-shrink: 1;  
	}
    .cat-item svg {
      width: 18px;
      height: 18px;
      fill: #555;
    }
	
	.cat-item1 {
		position: relative;
		cursor: pointer;
	  }
	.preview-tooltip {
		display: none;
		position: absolute;
		top: 110%;
		left: 0;
		z-index: 10;
		width: 400px;
		height: 220px;
		border: 1px solid #555;
		background: #fff;
		border-radius: 6px;
		overflow: hidden;
		box-shadow: 0 2px 10px rgba(0,0,0,0.6);
	  }
	.cat-item:hover .preview-tooltip {
		display: block;
	  }
	.preview-tooltip iframe {
		width: 1080px;
		height: 720px;
		transform: scale(0.37);
		transform-origin: top left;
		border: none;
		pointer-events: none;
	  }
	  @media (max-width: 768px) {
	  .preview-tooltip {
		display: none !important;
	  }
	}
	
    .subtitle {
	  font-family: 'Tiro Bangla', serif;
      font-size: 1.0em;
      margin-top: 20px;
      margin-bottom: 10px;
      color: #ccc;
      text-align: center;
	  padding: 20px;
    }
	
	
    #qa-content {
      <!-- font-family: 'Open Sans', sans-serif; -->
	  font-family: 'Tiro Bangla', serif;
	  padding: 25px;
    }

    #qa-content h2 {
      <!-- font-family: 'Open Sans', sans-serif; -->
	  font-family: 'Tiro Bangla', serif;
      font-size: 1.6em;
      margin-top: 30px;
      margin-bottom: 10px;
    }
	#qa-content h2::before {
	  content: "⬤ ";
	  color: #bababa; 
	  margin-right: 6px; 
	}


	#qa-content p,
	#qa-content ul,
	#qa-content li {
	  font-family: 'Tiro Bangla', serif;
	  line-height: 1.6;
	  margin-top: 0;
	  margin-bottom: 40px;
	  font-size: 1.1em;
	  text-align: justify;
	}
	
	#qa-content li {
	  margin-bottom: 6px;
	}
	
	#qa-content p + ul {
	  margin-top: -30px; 
	}
	
    <!-- @media (max-width: 640px) { -->
      <!-- .container { -->
        <!-- padding: 30px 15px; -->
      <!-- } -->

    .categories {
        flex-direction: column;
        align-items: center;
      }
    }
	@media print {
		body {
		display: none !important;
		}
	}
	::selection {
	  background-color: #ffd54f; 
	  color: #000000;
	}