@charset "UTF-8";

* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

body {
	font-family: Arial, Helvetica, sans-serif;
	color: #333;
	background: #fff;
	line-height: 1.8;
}

img {
	max-width: 100%;
	display: block;
}

a {
	text-decoration: none;
}

.article-wrapper {
	padding: 0px 0;
	background: #fff;
}

.article-container {
	width: 1480px;
	max-width: 100%;
	margin: auto;
	display: grid;
	grid-template-columns: 1100px 350px;
	gap: 30px;
}

.article-content p {
	font-size: 17px;
	color: #555;
	margin-bottom: 20px;
	line-height: 1.9;
}

.article-content ul {
	padding-left: 25px;
}

.section-title {
	display: flex;
	position: relative;
	gap: 25px;
	align-items: flex-start;
	margin: 35px 0 25px;
	scroll-margin-top: 100px;
}

.section-title:before {
	content: "";
	position: absolute;
	left: 0;
	bottom: 0;
	width: 75px;
	height: 6px;
	background: linear-gradient(90deg, #ff7a00, #092033);
	border-radius: 20px;
}

.section-title:after {
	content: "";
	position: absolute;
	left: 100px;
	bottom: 0;
	width: 150px;
	height: 6px;
	background: #ff7a00;
	border-radius: 20px;
}

.section-title span {
	font-size: 55px;
	font-weight: 900;
	color: #ff7a00;
	line-height: 1;
}

.section-title h2 {
	font-size: 25px;
	line-height: 1.3;
	color: #111;
	margin-bottom: 8px;
}

.section-title p {
	font-size: 16px;
	color: #888;
}

.highlight-box {
	margin: 40px 0;
	padding: 35px;
	background: #f3f7ff;
	border-left: 5px solid #ff7a00;
	border-radius: 12px;
}

.highlight-box h3 {
	font-size: 22px;
	margin-bottom: 10px;
	color: #111;
}

.data-box {
	margin: 50px 0;
	background: #092033;
	border-radius: 20px;
	padding: 40px;
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	color: #fff;
	text-align: center;
}

.data-box strong {
	font-size: 45px;
	display: block;
	color: #ff9b45;
}

.data-box span {
	font-size: 16px;
}

.feature-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 25px;
}

.feature-card {
	padding: 30px;
	border-radius: 18px;
	background: #fff;
	box-shadow: 0 10px 35px rgba(0, 0, 0, .08);
	transition: .3s;
}

.feature-card:hover {
	transform: translateY(-8px);
}

.feature-card h3 {
	font-size: 22px;
	margin: 20px 0 10px;
}

.icon {
	width: 50px;
	height: 50px;
	background: #ff7a00;
	color: #fff;
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	font-weight: bold;
	font-size: 18px;
}

.product-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 25px;
}

.product-grid-2 {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 25px;
}

.product-card {
	background: #fff;
	border-radius: 18px;
	overflow: hidden;
	box-shadow: 0 10px 35px rgba(0, 0, 0, .1);
}

.product-card img {
	height: auto;
	width: 100%;
	object-fit: cover;
}

.product-card h3 {
	padding: 20px 25px 10px;
	font-size: 23px;
}

.product-card p {
	padding: 0 25px;
}

.product-card a {
	display: block;
	padding: 20px 25px;
	color: #ff7a00;
	font-weight: bold;
}

.floating-toc {
	position: sticky;
	top: 100px;
	height: max-content;
	padding: 30px;
	background: #fff;
	border-radius: 20px;
	box-shadow: 0 15px 45px rgba(0, 0, 0, .12);
}

.floating-toc h3 {
	font-size: 22px;
	margin-bottom: 20px;
}

.floating-toc a {
	display: block;
	padding: 12px 0;
	border-bottom: 1px solid #eee;
	color: #555;
	font-size: 15px;
	transition: .3s;
}

.floating-toc a:hover {
	color: #ff7a00;
	padding-left: 8px;
}

.toc-contact {
	margin-top: 30px;
	padding: 25px;
	background: linear-gradient(135deg, #ff7a00, #ff9f40);
	border-radius: 15px;
	color: white;
	text-align: center;
	font-size: 16px;
}

.toc-contact a {
	border: 0;
	color: #fff;
	font-weight: bold;
	padding-bottom: 0px;
}

.toc-contact a:hover {
	color: #fff;
	padding-left: 8px;
}

.timeline {
	margin: 40px 0;
}

.timeline-item {
	display: flex;
	gap: 25px;
	padding: 30px;
	margin-bottom: 20px;
	background: #f7f8fb;
	border-radius: 18px;
}

.num {
	width: 50px;
	height: 50px;
	flex: none;
	background: #ff7a00;
	color: white;
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 20px;
	font-weight: bold;
}

.timeline-item h3 {
	font-size: 22px;
	margin-bottom: 10px;
	color: #111;
}

.application-box {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 20px;
	margin-top: 30px;
}

.application-box div {
	background: #f5f7fa;
	padding: 30px;
	border-radius: 15px;
	font-size: 18px;
	font-weight: 600;
	transition: .3s;
}

.application-box div:hover {
	background: #ff7a00;
	color: white;
}

.faq {
	margin-top: 30px;
}

.faq details {
	background: #f6f7f9;
	margin-bottom: 15px;
	padding: 25px 30px;
	border-radius: 15px;
	cursor: pointer;
}

.faq summary {
	font-size: 20px;
	font-weight: bold;
	color: #111;
}

.faq p {
	margin-top: 20px;
}

@media (max-width:1100px) {
	.article-container {
		grid-template-columns: 1fr;
	}
	
	.floating-toc {
		display: none;
	}
	
	.feature-grid, .product-grid, .application-box {
		grid-template-columns: 1fr;
	}
	
	.data-box {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (max-width:600px) {
	.article-wrapper {
		padding: 40px 0;
	}
	
	.section-title {
		margin: 5px 0 25px;
	}
	
	.section-title span {
		font-size: 38px;
	}
	
	.section-title h2 {
		font-size: 28px;
	}
	
	.article-content p {
		font-size: 16px;
	}
	
	.data-box {
		grid-template-columns: 1fr;
	}
	
	.timeline-item {
		padding: 20px;
	}
}