* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
	font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif
}

body {
	line-height: 1.5;
	min-height: 100vh;
	display: flex;
	justify-content: center;
	align-items: center;
	padding: 15px
}

.container {
	width: 60%;
	background-color: #f0f0f0;
	padding: 30px;
	border-radius: 15px;
	transition: all 0.4s ease
}

header {
	text-align: center;
	margin-bottom: 20px
}

h1 {
	font-size: 2.2rem;
	margin-bottom: 10px;
	position: relative;
	padding-bottom: 10px
}

h1::after {
	content: '';
	position: absolute;
	bottom: 0;
	left: 50%;
	transform: translateX(-50%);
	width: 80px;
	height: 3px;
	border-radius: 2px
}

.subtitle {
	font-size: 1.1rem;
	max-width: 600px;
	margin: 0 auto
}

.content {
	display: flex;
	gap: 20px;
	margin-bottom: 20px
}

.main-content {
	flex: 3
}

.sidebar {
	flex: 1;
	padding: 15px;
	border-radius: 8px
}

p {
	margin-bottom: 15px;
	font-size: 1rem;
	text-align: justify
}

ul {
	padding-left: 18px;
	margin: 15px 0
}

ul li {
	line-height: 1.8;
	margin-bottom: 8px;
	position: relative;
	padding-left: 0
}

a {
	color: #20a53a;
	text-decoration: none;
	font-weight: 600;
	transition: all 0.3s ease;
	border-bottom: 2px solid transparent
}

.device-info {
	padding: 12px;
	border-radius: 8px;
	text-align: center;
	font-weight: 600;
	margin-top: 15px;
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 8px
}

.device-info i {
	font-size: 1.3rem
}

.features {
	display: flex;
	gap: 15px;
	margin-top: 20px
}

.feature-card {
	padding: 20px;
	border-radius: 8px;
	text-align: center;
	flex: 1;
	transition: transform 0.3s ease
}

.feature-card:hover {
	transform: translateY(-3px)
}

.feature-card i {
	font-size: 2.2rem;
	margin-bottom: 12px
}

@media (max-width:1024px) {
	.container {
		width: 90%;
		padding: 25px
	}

	h1 {
		font-size: 1.9rem
	}

	.content {
		flex-direction: column;
		gap: 15px
	}

	.features {
		flex-wrap: wrap
	}

	.feature-card {
		flex: 1 1 45%;
		padding: 18px
	}
}

@media (max-width:768px) {
	body {
		padding: 8px
	}

	.container {
		padding: 20px 15px
	}

	h1 {
		font-size: 1.7rem;
		padding-bottom: 8px
	}

	.subtitle {
		font-size: 0.95rem
	}

	ul li {
		line-height: 1.6
	}

	.features {
		flex-direction: column;
		gap: 12px
	}

	.device-info {
		padding: 10px;
		font-size: 0.9rem
	}
}

@media (max-width:640px) {
	body {
		background-color: #f0f0f0
	}

	.container {
		width: auto;
		margin: 0
	}
}

@media (max-width:480px) {
	.container {
		padding: 18px 12px
	}

	h1 {
		font-size: 1.5rem
	}

	ul li {
		font-size: 0.92rem
	}

	.feature-card {
		padding: 15px
	}
}