body {
	display: flex;
	flex-direction: column;
	min-height: 100vh;
	background-color: #f1f5f9;
	color: #334155;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
	font-size: 15px;
	line-height: 1.75;
	margin: 0;
	padding: 0;
}

.top-header {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	width: 100%;
	z-index: 1000;
	background: linear-gradient(135deg, #1877f2 0%, #1d4ed8 100%);
	color: #ffffff;
	padding: 18px 0;
	box-shadow: 0 2px 10px rgba(24, 119, 242, 0.2);
}

.header-inner {
	max-width: 960px;
	margin: 0 auto;
	padding: 0 24px;
	display: flex;
	align-items: center;
	justify-content: space-between;
}

.brand-logo {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	text-decoration: none;
	color: #ffffff;
}

.brand-logo img {
	height: 38px;
	object-fit: contain;
}

.btn-back {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	padding: 8px 18px;
	background: rgba(255, 255, 255, 0.18);
	border: 1px solid rgba(255, 255, 255, 0.35);
	border-radius: 6px;
	color: #ffffff;
	text-decoration: none;
	font-size: 14px;
	font-weight: 500;
	transition: all 0.2s ease;
	cursor: pointer;
}

.btn-back:hover {
	background: rgba(255, 255, 255, 0.28);
	border-color: rgba(255, 255, 255, 0.5);
	transform: translateY(-1px);
}

.btn-back svg {
	width: 16px;
	height: 16px;
}

.main-wrapper {
	flex: 1;
	max-width: 960px;
	width: 100%;
	margin: 104px auto 40px auto;
	padding: 0 20px;
}

.article-card {
	background-color: #ffffff;
	padding: 44px 52px;
	border-radius: 12px;
	box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
	border: 1px solid #e2e8f0;
}

.breadcrumb {
	font-size: 14px;
	color: #64748b;
	margin-bottom: 16px;
}

.breadcrumb a {
	color: #1877f2;
	text-decoration: none;
	font-weight: 500;
}

.breadcrumb a:hover {
	text-decoration: underline;
}

h1.main-title {
	font-size: 24px;
	font-weight: 700;
	color: #0f172a;
	line-height: 1.4;
	margin-bottom: 24px;
	padding-bottom: 16px;
	border-bottom: 2px solid #e2e8f0;
}

h2.section-title {
	font-size: 17px;
	font-weight: 700;
	color: #1e293b;
	margin-top: 28px;
	margin-bottom: 12px;
	padding-left: 10px;
	border-left: 4px solid #1877f2;
}

p {
	margin-bottom: 14px;
	text-align: justify;
}

p strong.item-num {
	font-weight: 700;
	color: #0f172a;
}

ul.bullet-list {
	margin-left: 20px;
	margin-bottom: 14px;
	list-style-type: none;
}

ul.bullet-list li {
	margin-bottom: 8px;
	text-align: justify;
}

ul.bullet-list li strong.item-char {
	font-weight: 700;
	color: #0f172a;
}

a {
	color: #1877f2;
	text-decoration: none;
}

a:hover {
	text-decoration: underline;
}

.info-card {
	background: #f8fafc;
	border: 1px solid #e2e8f0;
	border-left: 4px solid #1877f2;
	border-radius: 8px;
	padding: 16px 20px;
	margin: 16px 0;
}

.info-card p {
	margin-bottom: 6px;
}

.info-card p:last-child {
	margin-bottom: 0;
}

footer.site-footer {
	border-top: 1px solid #e2e8f0;
	background: #ffffff;
	padding: 24px 20px;
	text-align: center;
	font-size: 13px;
	color: #64748b;
	margin-top: auto;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 8px;
}

@media (max-width: 768px) {
	.header-inner {
		padding: 0 16px;
	}

	.main-wrapper {
		margin: 92px auto 24px auto;
		padding: 0 12px;
	}

	.article-card {
		padding: 24px 20px;
	}

	h1.main-title {
		font-size: 19px;
	}

	h2.section-title {
		font-size: 16px;
	}
}