* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
	font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
	color: #333;
	background-color: #f8f9fa;
}

.container {
	max-width: 1100px;
	padding: 0 20px;
	margin: 0 auto;
}

.k-thumb {
	width: 300px;
	height: 450px;
	overflow: hidden;
	border-radius: 23px;
}

.k-thumb img {
	width: 100%;
}

/* 头部导航 */
header {
	padding: 16px 0;
	background: #fff;
	box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.header-wrap {
	display: flex;
	align-items: center;
	justify-content: space-between;
}

.logo {
	color: #2563eb;
	font-size: 24px;
	font-weight: bold;
}

nav a {
	color: #444;
	margin-left: 24px;
	text-decoration: none;
}

nav a:hover {
	color: #2563eb;
}

/* 首屏banner */
.banner {
	background: linear-gradient(135deg, #2563eb, #4f46e5);
	padding: 80px 0;
	color: white;
}

.banner-wrap {
	gap: 40px;
	display: grid;
	align-items: center;
	grid-template-columns: 1fr 1fr;
}

.banner h1 {
	font-size: 42px;
	margin-bottom: 20px;
}

.banner p {
	opacity: 0.92;
	font-size: 18px;
	line-height: 1.8;
	margin-bottom: 32px;
}

.download-box {
	gap: 16px;
	display: flex;
	flex-wrap: wrap;
}

.btn {
	display: inline-block;
	text-decoration: none;
	border-radius: 10px;
	padding: 14px 28px;
	font-weight: 500;
	font-size: 16px;
}

.btn-android {
	background: #fff;
	color: #2563eb;
}

.btn-ios {
	color: #fff;
	background: rgba(255, 255, 255, 0.18);
	border: 1px solid rgba(255, 255, 255, 0.4);
}

/* 功能介绍 */
.section {
	padding: 70px 0;
	background: #fff;
}

.section-title {
	font-size: 28px;
	text-align: center;
	margin-bottom: 48px;
}

.feature-list {
	gap: 24px;
	display: grid;
	grid-template-columns: repeat(3, 1fr);
}

.feature-item {
	padding: 30px;
	background: #f8fafc;
	border-radius: 14px;
}

.feature-item h3 {
	margin-bottom: 12px;
	color: #2563eb;
}

/* 底部 */
footer {
	color: #cbd5e1;
	padding: 40px 0;
	font-size: 14px;
	line-height: 1.8;
	background: #1e293b;
}

footer a {
	color: #93c5fd;
	text-decoration: none;
}

.copyright {
	margin-top: 16px;
}

/* 移动端适配 */
@media(max-width:768px) {
	.banner-wrap {
		grid-template-columns: 1fr;
		text-align: center;
	}

	.banner h1 {
		font-size: 30px;
	}

	.download-box {
		justify-content: center;
	}

	.feature-list {
		grid-template-columns: 1fr;
	}

	nav {
		display: none;
	}
}