/* TOC Box Styling */
.my-best-toc-block {
    border: 1px solid #facc15;
    border-radius: 10px;
    padding: 16px 18px;
    background: #fffbea;
    box-shadow: 0 3px 8px rgba(0,0,0,0.08);
    margin: 20px 0;
    position: relative;
    font-family: "Segoe UI", Arial, sans-serif;
}
/* Header + Toggle */
.my-toc-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}
.my-toc-header h2 {
    font-size: 18px;
    margin: 0;
    font-weight: 600;
    color: #1f2937;
}
/* SVG Toggle Icon */
.my-toc-toggle {
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
    fill: #374151;
}
.my-toc-toggle.open {
    transform: rotate(180deg);
}
/* Collapsible content */
.my-best-toc-block nav {
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.4s ease, padding 0.3s ease;
}
.my-best-toc-block nav.open {
    max-height: 1000px;
    padding-top: 10px;
}
/* Numbered List Styling using CSS Counters */
.my-best-toc-block ul {
    list-style: none;
    margin: 0;
    padding: 0;
    counter-reset: toc-counter;
}
.my-best-toc-block ul ul { counter-reset: toc-sub-counter; }
.my-best-toc-block ul ul ul { counter-reset: toc-sub-sub-counter; }
/* Level 1 (H2) */
.my-best-toc-block > nav > ul > li {
    counter-increment: toc-counter;
    margin: 8px 0;
}
.my-best-toc-block > nav > ul > li > a::before {
    content: counter(toc-counter) ". ";
    font-weight: 600;
    color: #374151;
}
.my-best-toc-block > nav > ul > li > a {
    font-size: 15px;
    font-weight: 600;
    color: #1f2937;
    text-decoration: none;
    transition: color 0.2s ease;
}
/* Level 2 (H3) */
.my-best-toc-block ul ul > li {
    counter-increment: toc-sub-counter;
    margin: 6px 0 6px 16px;
}
.my-best-toc-block ul ul > li > a::before {
    content: counter(toc-counter) "." counter(toc-sub-counter) " ";
    font-weight: 500;
    color: #4b5563;
}
.my-best-toc-block ul ul > li > a {
    font-size: 14px;
    font-weight: 500;
    color: #374151;
    text-decoration: none;
    display: block;
    border-left: 2px solid #fde047;
    padding-left: 8px;
    transition: color 0.2s ease, padding-left 0.2s ease;
}
/* Hover */
.my-best-toc-block li a:hover {
    color: #ca8a04;
    padding-left: 4px;
}