:root {
	--primary-color: #2196f3;
	--secondary-color: #1976d2;
	--text-color: #333333;
	--light-bg: #f8faff;
	--card-bg: #ffffff;
	--section-bg: #eef2ff;
	--gradient-start: #2196f3;
	--gradient-end: #18c2e8;
	--white: #ffffff;
	--success: #4caf50;
	--shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
	--card-shadow: 0 8px 16px rgba(33, 150, 243, 0.1);
	--hover-transform: translateY(-2px);
}

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

body {
	font-family: 'Inter', sans-serif;
	line-height: 1.6;
	color: var(--text-color);
	background: var(--light-bg);
}

.hero {
	background: linear-gradient(145deg, var(--gradient-start), var(--gradient-end));
	color: var(--white);
	padding: 2rem 0;
	min-height: 60vh;
	display: flex;
	flex-direction: column;
	position: relative;
	overflow: hidden;
	z-index: 1;
}

.hero::after {
	content: '';
	position: absolute;
	width: 100%;
	height: 100%;
	top: 0;
	left: 0;
	background: url('wave.svg') bottom center no-repeat;
	background-size: 100% auto;
	opacity: 0.1;
	z-index: -1;
	pointer-events: none;
}

nav {
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: 0 5%;
	margin-bottom: 4rem;
}

.logo {
	display: flex;
	align-items: center;
}

.logo img {
	height: 40px;
	width: auto;
}

.nav-links a {
	color: var(--white);
	text-decoration: none;
	margin-left: 2rem;
	transition: opacity 0.3s ease;
}

.nav-links a:hover {
	opacity: 0.8;
}

.hero-content {
	text-align: center;
	max-width: 800px;
	margin: auto;
	padding: 0 1rem;
	position: relative;
	z-index: 2;
}

.hero-content h1 {
	font-size: 3rem;
	margin-bottom: 1.5rem;
}

.cta-button {
	display: inline-block;
	padding: 1rem 2rem;
	background: linear-gradient(45deg, var(--gradient-start), var(--gradient-end));
	color: var(--white);
	text-decoration: none;
	border-radius: 5px;
	font-weight: bold;
	margin-top: 2rem;
	border: none;
	cursor: pointer;
	transition: all 0.3s ease;
	position: relative;
	z-index: 3;
	box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
}

.cta-button:hover {
	transform: translateY(-2px);
	box-shadow: 0 4px 12px rgba(33, 150, 243, 0.2);
}

section {
	padding: 5rem 1rem;
	max-width: 1200px;
	margin: 0 auto;
	position: relative;
	overflow: hidden;
}

section:nth-child(even) {
	background: var(--section-bg);
	margin: 2rem auto;
	padding: 5rem 1rem;
}

section h2 {
	text-align: center;
	margin-bottom: 3rem;
	font-size: 2.5rem;
}

.codes-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
	gap: 2rem;
}

.code-card {
	background: var(--card-bg);
	padding: 2rem;
	border-radius: 10px;
	position: relative;
	box-shadow: var(--card-shadow);
	transition: transform 0.3s ease;
}

.code-card:hover {
	transform: var(--hover-transform);
}

.code-card.new {
	border: 2px solid var(--primary-color);
}

.tag {
	position: absolute;
	top: 1rem;
	right: 1rem;
	background: var(--primary-color);
	color: var(--white);
	padding: 0.25rem 0.75rem;
	border-radius: 3px;
	font-size: 0.8rem;
}

.copy-btn {
	width: 100%;
	padding: 0.75rem;
	background: linear-gradient(45deg, var(--gradient-start), var(--gradient-end));
	color: var(--white);
	border: none;
	border-radius: 5px;
	cursor: pointer;
	margin-top: 1rem;
	transition: all 0.3s ease;
}

.copy-btn:hover {
	transform: translateY(-2px);
	box-shadow: 0 4px 12px rgba(33, 150, 243, 0.2);
}

.steps-container {
	display: grid;
	grid-template-columns: repeat(5, 1fr);
	gap: 2rem;
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 2rem;
}

.step {
	text-align: center;
	padding: 2rem;
	background: var(--card-bg);
	border-radius: 10px;
	box-shadow: var(--card-shadow);
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: flex-start;
	min-height: 200px;
}

.step-number {
	display: inline-block;
	width: 40px;
	height: 40px;
	background: linear-gradient(45deg, var(--gradient-start), var(--gradient-end));
	color: var(--white);
	border-radius: 50%;
	line-height: 40px;
	margin-bottom: 1rem;
	font-weight: bold;
	box-shadow: 0 4px 8px rgba(33, 150, 243, 0.2);
}

.step p {
	margin: 0;
	font-size: 0.95rem;
}

.features-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
	gap: 2rem;
}

.feature-card {
	background: var(--card-bg);
	padding: 2rem;
	border-radius: 10px;
	text-align: center;
	box-shadow: var(--card-shadow);
	border-left: 4px solid var(--primary-color);
}

footer {
	background: var(--text-color);
	color: var(--white);
	padding: 3rem 1rem;
}

.footer-content {
	max-width: 1200px;
	margin: 0 auto;
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
	gap: 2rem;
}

.footer-section a {
	display: block;
	color: var(--white);
	text-decoration: none;
	margin-bottom: 0.5rem;
}

.footer-bottom {
	text-align: center;
	margin-top: 2rem;
	padding-top: 2rem;
	border-top: 1px solid rgba(255, 255, 255, 0.1);
}

@media (max-width: 768px) {
	.nav-links {
		display: none;
	}

	.hero-content h1 {
		font-size: 2rem;
		padding: 0 1rem;
	}

	.hero-content p {
		padding: 0 1.5rem;
		font-size: 1rem;
	}

	.expired-codes ul {
		columns: 1;
	}

	section {
		padding: 3rem 1rem;
	}

	section h2 {
		font-size: 2rem;
		margin-bottom: 2rem;
	}

	.section-intro {
		padding: 0 1rem;
		margin-bottom: 2rem;
	}

	.codes-grid {
		grid-template-columns: 1fr;
		padding: 0 1rem;
	}

	.about-content {
		padding: 2rem 1.5rem;
		margin: 0 1rem;
	}

	.about-content p {
		font-size: 1rem;
		line-height: 1.6;
	}

	.features {
		grid-template-columns: 1fr;
	}

	.feature-card {
		margin: 0 1rem;
	}

	.benefits-grid {
		grid-template-columns: 1fr;
		margin: 1rem;
	}

	.tips-container {
		grid-template-columns: 1fr;
		padding: 0 1rem;
	}
}

@media (max-width: 480px) {
	.hero-content h1 {
		font-size: 1.75rem;
	}

	.cta-button {
		padding: 0.875rem 1.5rem;
		font-size: 0.95rem;
	}

	.step {
		min-height: auto;
		padding: 1.5rem;
	}

	.code-card {
		padding: 1.5rem;
	}

	.footer-content {
		grid-template-columns: 1fr;
		text-align: center;
	}

	.footer-section {
		margin-bottom: 2rem;
	}
}

@media (min-width: 769px) and (max-width: 1024px) {
	.hero-content {
		max-width: 90%;
	}

	.codes-grid {
		grid-template-columns: repeat(2, 1fr);
	}

	.features-grid {
		grid-template-columns: repeat(2, 1fr);
	}
}

.tips-container {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
	gap: 2rem;
}

.tip {
	background: var(--light-bg);
	padding: 2rem;
	border-radius: 10px;
	text-align: center;
}

.updates-container {
	max-width: 800px;
	margin: 0 auto;
}

.update-card {
	background: var(--light-bg);
	padding: 2rem;
	border-radius: 10px;
}

.update-card ul {
	list-style-position: inside;
	margin-top: 1rem;
}

.update-card li {
	padding: 0.5rem 0;
}

.section-intro {
	text-align: center;
	max-width: 800px;
	margin: 0 auto 3rem;
	color: #666;
}

.benefits-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
	gap: 2rem;
	margin: 2rem 0;
}

.benefit-card {
	background: var(--card-bg);
	padding: 2rem;
	border-radius: 10px;
	box-shadow: var(--card-shadow);
	border-top: 4px solid var(--primary-color);
	transition: transform 0.3s ease;
}

.benefit-card:hover {
	transform: var(--hover-transform);
}

.section-decorator {
	position: absolute;
	width: 200px;
	height: 200px;
	background: linear-gradient(45deg, var(--gradient-start), var(--gradient-end));
	opacity: 0.05;
	border-radius: 50%;
	z-index: -1;
}

.section-decorator.left {
	left: -100px;
	top: 50%;
}

.section-decorator.right {
	right: -100px;
	bottom: 50%;
}

@media (max-width: 1024px) {
	.steps-container {
		grid-template-columns: repeat(3, 1fr);
	}
}

@media (max-width: 768px) {
	.steps-container {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (max-width: 480px) {
	.steps-container {
		grid-template-columns: 1fr;
	}
}

.about-content {
	background: var(--card-bg);
	padding: 3rem;
	border-radius: 20px;
	box-shadow: var(--card-shadow);
	position: relative;
	overflow: hidden;
}

.about-content p {
	margin-bottom: 2rem;
	color: var(--text-color);
	font-size: 1.1rem;
	line-height: 1.8;
}

.about-content::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 6px;
	background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
}

.features {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
	gap: 2rem;
	margin-top: 3rem;
	padding-top: 2rem;
	border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.feature {
	background: var(--section-bg);
	padding: 2rem;
	border-radius: 12px;
	text-align: center;
	transition: transform 0.3s ease;
}

.feature:hover {
	transform: var(--hover-transform);
}

.feature h3 {
	color: var(--primary-color);
	margin-bottom: 1rem;
	font-size: 1.3rem;
}

.feature p {
	margin: 0;
	color: var(--text-color);
	font-size: 0.95rem;
}