/* Accessibility — contrast, links, skip link */

.bdn-sr-only,
.screen-reader-text {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

.bdn-skip-link {
	position: absolute;
	left: -9999px;
	top: auto;
	z-index: 100000;
	padding: 8px 16px;
	background: #111;
	color: #fff;
	font-weight: 600;
	text-decoration: none;
}

.bdn-skip-link:focus {
	left: 8px;
	top: 8px;
}

/* Mobile quick links — đủ tương phản WCAG AA */
#header-mobile .list-link-after-top {
	background-color: #1a6b2e;
}

#header-mobile .list-link-after-top a {
	color: #fff;
	font-weight: 600;
}

#header-mobile .list-link-after-top .button-center,
#header-mobile .list-link-after-top .button-right {
	border-left-color: #3d8f4a;
}

/* Liên kết trong zone-notice — không chỉ dựa vào màu */
.zone-notice a {
	color: #0b6b32;
	text-decoration: underline;
	text-underline-offset: 2px;
}

.zone-notice a:hover,
.zone-notice a:focus {
	color: #064422;
}

.zone-notice.link-hot-tructiep24h a {
	color: #b30000;
	text-decoration: underline;
	text-underline-offset: 2px;
}

.zone-notice.link-hot-tructiep24h a:hover,
.zone-notice.link-hot-tructiep24h a:focus {
	color: #7a0000;
}

/* Nội dung chính */
.bdn-main:focus {
	outline: none;
}