“`html

/* Base Styles for Readability and Responsive Design */
body {
font-family: ‘B Nazanin’, ‘Tahoma’, ‘Arial’, sans-serif; /* Friendly Persian font, with fallbacks */
line-height: 1.7;
color: hsl(210, 15%, 25%); /* Elegant Dark Grayish Blue for text */
background-color: hsl(0, 0%, 98%); /* Soft Off-white background */
margin: 0;
padding: 0;
direction: rtl; /* Right-to-left for Persian */
text-align: right; /* Default text alignment */
}
.container {
max-width: 900px; /* Optimal width for reading on large screens */
margin: 30px auto; /* Centering the content */
padding: 25px 35px; /* Ample padding inside the container */
background-color: #fff; /* White content background */
box-shadow: 0 6px 20px rgba(0, 0, 0, 0.09); /* Soft, prominent shadow */
border-radius: 12px; /* Rounded corners for a modern look */
border: 1px solid hsl(210, 10%, 90%); /* Subtle border */
}

/* Heading Styles – Designed for Visual Hierarchy and Branding */
h1 {
font-size: 2.7em; /* Large and impactful for the main title */
font-weight: 800; /* Extra bold */
color: hsl(210, 60%, 30%); /* Deep, Professional Blue */
text-align: center;
margin-bottom: 35px;
padding-bottom: 20px;
border-bottom: 4px solid hsl(210, 60%, 40%); /* Strong accent line */
line-height: 1.3;
}
h2 {
font-size: 2.1em; /* Substantial for main sections */
font-weight: 700; /* Bold */
color: hsl(210, 60%, 40%); /* Richer Blue */
margin-top: 50px;
margin-bottom: 25px;
border-bottom: 2px solid hsl(210, 10%, 90%); /* Subtle separator */
padding-bottom: 10px;
}
h3 {
font-size: 1.6em; /* Clear for subsections */
font-weight: 600; /* Semi-bold */
color: hsl(210, 15%, 25%); /* Dark Grayish Blue */
margin-top: 35px;
margin-bottom: 20px;
}
p {
margin-bottom: 1.2em; /* More space between paragraphs */
text-align: justify; /* Justified text for a clean look */
}

/* List Styles – Custom Bullets for Enhanced Readability */
ul {
list-style: none; /* Remove default bullet */
padding-right: 0; /* Align with text */
margin-top: 15px;
margin-bottom: 15px;
}
ul li {
position: relative;
padding-right: 30px; /* Space for custom bullet */
margin-bottom: 12px;
}
ul li::before {
content: ‘★’; /* Custom star bullet */
color: hsl(195, 70%, 55%); /* Vibrant Teal Accent */
font-weight: bold;
position: absolute;
right: 0;
font-size: 1.1em;
top: 2px;
}

/* Table Styles – Modern and Responsive */
table {
width: 100%;
border-collapse: collapse;
margin: 30px 0;
font-size: 0.95em;
text-align: right;
box-shadow: 0 3px 10px rgba(0,0,0,0.08); /* Soft shadow for table */
border-radius: 8px; /* Rounded table corners */
overflow: hidden; /* Ensures rounded corners are visible */
}
th, td {
padding: 14px 18px;
border: 1px solid hsl(210, 10%, 90%); /* Light gray borders */
}
thead tr {
background-color: hsl(210, 60%, 40%); /* Dark Blue header background */
color: #ffffff; /* White text for header */
font-weight: bold;
text-align: center;
}
tbody tr:nth-of-type(even) {
background-color: hsl(0, 0%, 96%); /* Subtle stripe for readability */
}
tbody tr:hover {
background-color: hsl(195, 15%, 90%); /* Light teal on hover */
cursor: pointer;
}

/* Infographic-like Block Style – Visually Engaging */
.infographic-box {
background-color: hsl(195, 70%, 96%); /* Very light teal background */
border-right: 6px solid hsl(195, 70%, 55%); /* Prominent Teal border on right */
padding: 25px;
margin: 40px 0;
border-radius: 10px;
box-shadow: 0 4px 15px rgba(0,0,0,0.07);
}
.infographic-box h3 {
color: hsl(210, 60%, 40%); /* Dark Blue heading */
margin-top: 0;
font-size: 1.7em;
text-align: center;
padding-bottom: 10px;
border-bottom: 1px dashed hsl(195, 20%, 80%);
margin-bottom: 25px;
}
.infographic-item {
margin-bottom: 20px;
padding-bottom: 15px;
border-bottom: 1px dashed hsl(195, 20%, 80%); /* Dashed separator */
}
.infographic-item:last-child {
border-bottom: none;
margin-bottom: 0;
padding-bottom: 0;
}
.infographic-item strong {
color: hsl(210, 60%, 35%); /* Slightly darker blue for emphasis */
font-size: 1.1em;
display: block; /* Ensures bold text takes its own line */
margin-bottom: 8px;
}
.infographic-item p {
margin-bottom: 0;
line-height: 1.6;
}

/* Table of Contents Style – Functional and Clean */
.toc {
background-color: hsl(210, 10%, 96%); /* Light gray background */
border: 1px solid hsl(210, 10%, 90%);
border-radius: 8px;
padding: 20px 30px;
margin: 30px 0;
box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}
.toc h3 {
margin-top: 0;
color: hsl(210, 60%, 40%);
text-align: center;
border-bottom: 1px solid hsl(210, 10%, 85%);
padding-bottom: 12px;
margin-bottom: 18px;
font-size: 1.5em;
}
.toc ul {
list-style: decimal; /* Numbered list for TOC */
padding-right: 25px; /* Indent for numbering */
}
.toc ul li {
margin-bottom: 10px;
padding-right: 0; /* Remove custom bullet for TOC */
}
.toc ul li::before {
content: none; /* Remove custom bullet icon for TOC */
}
.toc a {
color: hsl(210, 15%, 25%);
text-decoration: none;
font-weight: 500;
}
.toc a:hover {
color: hsl(195, 70%, 55%);
text-decoration: underline;
}

/* FAQ Section – Clear Q&A Format */
.faq-item {
margin-bottom: 25px;
border-bottom: 1px solid hsl(210, 10%, 92%);
padding-bottom: 20px;
}
.faq-item:last-child {
border-bottom: none;
padding-bottom: 0;
}
.faq-item strong {
color: hsl(210, 60%, 40%);
font-size: 1.2em;
display: block; /* Question on its own line */
margin-bottom: 10px;
}
.faq-item p {
margin-top: 0;
margin-bottom: 0;
padding-right: 15px; /* Indent answer slightly */
position: relative;
}
.faq-item p::before {
content: ‘»’; /* Custom arrow for answer */
color: hsl(195, 70%, 55%);
font-weight: bold;
position: absolute;
right: 0;
top: 0;
}

/* Responsive Adjustments for Smaller Screens (Mobile, Tablet) */
@media (max-width: 768px) {
.container {
margin: 15px auto;
padding: 15px 20px; /* Reduced padding on smaller screens */
box-shadow: none; /* Lighter shadow on mobile */
border-radius: 0; /* No rounded corners on full-width mobile */
}
h1 {
font-size: 2em; /* Smaller main title */
margin-bottom: 25px;
padding-bottom: 12px;
border-bottom-width: 3px;
}
h2 {
font-size: 1.7em; /* Smaller H2 */
margin-top: 35px;
margin-bottom: 18px;
}
h3 {
font-size: 1.3em; /* Smaller H3 */
margin-top: 25px;
margin-bottom: 12px;
}
p {
text-align: justify; /* Maintain justified text */
}

/* Responsive Table Transformation */
table, thead, tbody, th, td, tr {
display: block; /* Stack table elements */
}
thead tr {
position: absolute;
top: -9999px;
left: -9999px; /* Hide table header */
}
tr {
border: 1px solid hsl(210, 10%, 90%);
margin-bottom: 15px;
border-radius: 8px; /* Rounded corners for each row */
overflow: hidden;
}
td {
border: none;
border-bottom: 1px solid hsl(210, 10%, 90%);
position: relative;
padding-right: 50%; /* Space for data label */
text-align: left; /* Align data to left for better reading */
min-height: 40px; /* Ensure sufficient height */
display: flex; /* Use flexbox for vertical alignment */
align-items: center;
}
td::before {
content: attr(data-label); /* Show column name from data-label */
position: absolute;
right: 15px; /* Position label on the right */
width: 40%;
padding-left: 10px;
white-space: nowrap;
text-align: right;
font-weight: bold;
color: hsl(210, 60%, 40%);
}
td:last-child {
border-bottom: 0; /* No bottom border for last cell in row */
}

.infographic-box {
padding: 20px;
border-right-width: 4px;
}
.infographic-box h3 {
font-size: 1.4em;
}
.toc {
padding: 15px 20px;
}
}

/* Adjustments for print to save ink */
@media print {
body {
background-color: #fff;
color: #000;
direction: rtl;
}
.container {
box-shadow: none;
border: none;
margin: 0;
padding: 0;
}
h1, h2, h3 {
color: #000 !important;
border-color: #eee !important;
}
.infographic-box, .toc {
background-color: #f8f8f8 !important;
border: 1px solid #ddd !important;
box-shadow: none !important;
}
ul li::before, .faq-item p::before {
color: #555 !important;
}
table, th, td {
border-color: #ccc !important;
}
}

“`