“`html

/* Base styles for responsiveness and readability */
body {
font-family: ‘B Nazanin’, ‘Arial’, sans-serif; /* A professional Persian font */
line-height: 1.8;
color: #333;
margin: 0;
padding: 0;
background-color: #fcfcfc;
}
.container {
max-width: 1000px;
margin: 20px auto;
padding: 20px;
background-color: #fff;
border-radius: 8px;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
box-sizing: border-box; /* Ensures padding doesn’t expand the box */
}

/* Headings – for direct block editor use, inline styles are most reliable for initial copy-paste */
h1 {
font-size: 2.4em; /* Larger for H1 */
color: #1a237e; /* Deep indigo for strong scientific feel */
text-align: center;
margin-bottom: 30px;
padding-bottom: 15px;
border-bottom: 2px solid #e0e0e0;
font-weight: 800; /* Extra bold */
line-height: 1.3;
}
h2 {
font-size: 1.8em; /* Substantial size for H2 */
color: #283593; /* Slightly lighter indigo */
margin-top: 40px;
margin-bottom: 20px;
padding-bottom: 8px;
border-bottom: 1px dashed #c5cae9;
font-weight: 700; /* Bold */
line-height: 1.4;
}
h3 {
font-size: 1.4em; /* Clear distinction for H3 */
color: #3949ab; /* Medium indigo */
margin-top: 30px;
margin-bottom: 15px;
font-weight: 600; /* Semi-bold */
line-height: 1.5;
}

/* Paragraphs and Lists */
p {
margin-bottom: 1.2em;
text-align: justify;
}
ul, ol {
margin-bottom: 1.5em;
padding-right: 20px;
}
li {
margin-bottom: 0.8em;
}

/* Table Styles */
table {
width: 100%;
border-collapse: collapse;
margin: 30px 0;
font-size: 0.95em;
box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
border-radius: 6px;
overflow: hidden; /* Ensures rounded corners apply */
}
th, td {
padding: 15px 20px;
text-align: right;
border-bottom: 1px solid #eee;
}
th {
background-color: #e8eaf6; /* Light indigo background for headers */
color: #1a237e; /* Deep indigo text */
font-weight: 700;
}
tr:nth-child(even) {
background-color: #f9f9f9;
}
tr:hover {
background-color: #f0f0f0;
}

/* Infographic/Info-box style (Alternative for visual appeal) */
.info-box-container {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); /* Responsive grid */
gap: 25px;
margin: 40px 0;
padding: 20px;
background-color: #e3f2fd; /* Light blue background for emphasis */
border-radius: 12px;
box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.05);
}
.info-box-item {
background-color: #ffffff;
border: 1px solid #bbdefb; /* Lighter blue border */
border-radius: 10px;
padding: 25px;
text-align: center;
transition: transform 0.3s ease, box-shadow 0.3s ease;
box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}
.info-box-item:hover {
transform: translateY(-5px);
box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}
.info-box-icon {
font-size: 2.5em;
color: #2196f3; /* Bright blue icon */
margin-bottom: 15px;
display: block;
}
.info-box-title {
font-size: 1.2em;
font-weight: 700;
color: #1a237e;
margin-bottom: 10px;
}
.info-box-description {
font-size: 0.95em;
color: #555;
line-height: 1.6;
}

/* Responsive adjustments */
@media (max-width: 768px) {
.container {
margin: 10px;
padding: 15px;
}
h1 { font-size: 1.8em; }
h2 { font-size: 1.5em; }
h3 { font-size: 1.2em; }
table, .info-box-container {
overflow-x: auto; /* Enable horizontal scrolling for tables on small screens */
display: block;
width: 100%;
}
.info-box-container {
grid-template-columns: 1fr; /* Single column on small screens */
}
th, td {
padding: 10px 15px;
}
}

/* Larger screens (Tablet, Laptop, TV) */
@media (min-width: 1200px) {
.container {
max-width: 1200px; /* Wider for larger screens */
}
}

“`