Banking

body {
font-family: Arial, sans-serif;
margin:0;
background:#f2f4f8;
scroll-behavior:smooth;
}

/* HEADER */
.header {
background:#0055ff;
color:white;
padding:25px;
text-align:center;
}
.logo { font-size:32px; font-weight:bold; }
.tag { font-size:16px; opacity:0.9; }

/* PAGE LAYOUT */
.layout {
display: flex;
gap: 20px;
padding: 20px;
}

/* CONTENT AREA */
.content {
flex: 1;
}

/* ===================== TOC ===================== */
#toc {
position: sticky;
top: 50px;
background: white;
padding: 15px;
border-radius: 10px;
max-width: 300px;
box-shadow: 0 4px 15px rgba(0,0,0,0.1);
transition: background 0.3s, color 0.3s;
height: max-content;
}
#toc h2 {
cursor: pointer;
display: flex;
justify-content: space-between;
align-items: center;
margin: 0;
}
#toc a {
display: block;
padding: 6px 0;
font-weight: bold;
text-decoration: none;
color:#333;
}
#toc a:hover { color:#0055ff; }

/* CATEGORY BLOCKS */
.section {
background:white;
margin:20px 0;
padding:20px;
border:2px solid #000;
border-radius:10px;
box-shadow:0 3px 12px rgba(0,0,0,0.1);
}
.section h2 {
margin-top:0;
color:#fff;
font-size:22px;
background:#0055ff;
border-radius:25px;
}
.section h2 i {
margin-right:20px;
margin-left:10px;
color:#fff;
}
.section ul { padding-left:10px; }
.section li { margin:8px 0; }
.section a { text-decoration:none; color:#0055ff; font-weight:bold; }
.section a:hover { color:#ff6600; }

/* MOBILE */
@media(max-width:900px) {
.layout {
flex-direction: column;
padding: 10px;
}
#toc {
width: 100%;
max-width: 100%;
margin-bottom: 10px;
}
.section {
margin:10px 0;
}
.logo { font-size:24px; }
}

// ================= TOGGLE TOC (MOBILE ONLY) =================
const tocHeader = document.getElementById(“toc-header”);
const tocContent = document.getElementById(“toc-content”);
const tocArrow = document.getElementById(“toc-arrow”);

function isMobile() {
return window.innerWidth < 900;
}

function toggleTOC() {
if (!isMobile()) return;
const visible = tocContent.style.display !== "none";
tocContent.style.display = visible ? "none" : "block";
tocArrow.textContent = visible ? "▼" : "▲";
tocHeader.setAttribute("aria-expanded", !visible);
}

function setInitialTOC() {
if (isMobile()) {
tocContent.style.display = "none";
tocArrow.textContent = "▼";
tocHeader.setAttribute("aria-expanded", false);
} else {
tocContent.style.display = "block";
tocArrow.textContent = "";
tocHeader.setAttribute("aria-expanded", true);
}
}

tocHeader.addEventListener("click", toggleTOC);
window.addEventListener("resize", setInitialTOC);
setInitialTOC();