:root {
	--primary: #4a6bdf;
	--secondary: #ff7e33;
	--light-bg: #f8faff;
}

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

body {
	line-height: 1.7;
	color: #444;
}

.container {
	max-width: 1140px;
	margin: 0 auto;
	padding: 0 20px;
}

/* 导航栏 */
.navbar {
	background: white;
	box-shadow: 0 3px 15px rgba(0, 0, 0, 0.05);
	position: sticky;
	top: 0;
	z-index: 100;
}

.nav-container {
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: 15px 0;
}

.brand {
	font-size: 22px;
	font-weight: 700;
	color: var(--primary);
	display: flex;
	align-items: center;
}

.brand-icon {
	margin-right: 10px;
	font-size: 28px;
}

.nav-menu {
	display: flex;
	list-style: none;
}

.nav-item {
	margin-left: 35px;
	position: relative;
}

.nav-link {
	color: #555;
	font-weight: 500;
	transition: all 0.3s;
	padding: 5px 0;
}

.nav-link:hover {
	color: var(--primary);
}

.nav-link:after {
	content: '';
	position: absolute;
	bottom: 0;
	left: 0;
	width: 0;
	height: 2px;
	background: var(--secondary);
	transition: width 0.3s;
}

.nav-link:hover:after {
	width: 100%;
}

/* 主横幅 */
.hero {
	background: linear-gradient(135deg, var(--primary) 0%, #6a8eff 100%);
	color: white;
	padding: 120px 0 90px;
	text-align: center;
	position: relative;
	overflow: hidden;
}

.hero:before {
	content: '';
	position: absolute;
	bottom: -50px;
	left: 0;
	right: 0;
	height: 100px;
	background: white;
	transform: skewY(-3deg);
	z-index: 1;
}

.hero-title {
	font-size: 2.8rem;
	margin-bottom: 25px;
	line-height: 1.2;
}

.hero-subtitle {
	font-size: 1.25rem;
	max-width: 700px;
	margin: 0 auto 40px;
	opacity: 0.9;
}

.btn {
	display: inline-block;
	background: var(--secondary);
	color: white;
	padding: 14px 35px;
	border-radius: 50px;
	font-weight: 600;
	transition: all 0.3s;
	box-shadow: 0 5px 15px rgba(255, 126, 51, 0.3);
}

.btn:hover {
	transform: translateY(-3px);
	box-shadow: 0 8px 20px rgba(255, 126, 51, 0.4);
}

.features-wrap {
	display: flex;
	justify-content: center;
	flex-wrap: wrap;
	margin-top: 50px;
}

.feature-tag {
	background: rgba(255, 255, 255, 0.15);
	backdrop-filter: blur(5px);
	padding: 10px 25px;
	border-radius: 50px;
	margin: 0 10px 15px;
	display: inline-flex;
	align-items: center;
	border: 1px solid rgba(255, 255, 255, 0.2);
}

.feature-tag:before {
	content: "•";
	color: var(--secondary);
	font-weight: bold;
	margin-right: 8px;
}

/* 技术方案区块 */
.solution-section {
	padding: 100px 0;
}

.section-header {
	text-align: center;
	margin-bottom: 60px;
}

.section-title {
	color: var(--primary);
	font-size: 2.2rem;
	margin-bottom: 15px;
}

.section-subtitle {
	color: #666;
	font-size: 1.1rem;
	max-width: 700px;
	margin: 0 auto;
}

/* 解决方案卡片 */
.solution-card {
	background: white;
	border-radius: 12px;
	box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
	overflow: hidden;
	transition: transform 0.4s, box-shadow 0.4s;
	height: 100%;
	display: flex;
	flex-direction: column;
}

.solution-card:hover {
	transform: translateY(-10px);
	box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.solution-img {
	height: 220px;
	background-size: cover;
	background-position: center;
}

.solution-body {
	padding: 30px;
	flex-grow: 1;
}

.solution-name {
	color: var(--primary);
	font-size: 1.5rem;
	margin-bottom: 15px;
}

.solution-desc {
	color: #666;
	margin-bottom: 20px;
}

.solution-features {
	list-style: none;
	margin-top: 25px;
}

.solution-feature {
	position: relative;
	padding-left: 25px;
	margin-bottom: 12px;
	color: #555;
}

.solution-feature:before {
	content: "";
	position: absolute;
	left: 0;
	top: 8px;
	width: 12px;
	height: 12px;
	background: var(--secondary);
	border-radius: 3px;
	transform: rotate(45deg);
}

/* 技术优势 - 修改为PC端每行2个 */
.tech-advantages {
	background: var(--light-bg);
	padding: 100px 0;
}

.advantage-grid {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	/* PC端每行2个 */
	gap: 30px;
}

.advantage-card {
	background: white;
	border-radius: 12px;
	padding: 40px 30px;
	text-align: center;
	box-shadow: 0 5px 15px rgba(0, 0, 0, 0.03);
	transition: transform 0.3s;
}

.advantage-card:hover {
	transform: translateY(-5px);
}

.advantage-icon {
	font-size: 48px;
	color: var(--primary);
	margin-bottom: 20px;
}

.advantage-title {
	font-size: 1.3rem;
	color: #333;
	margin-bottom: 15px;
}

.advantage-desc {
	color: #666;
	font-size: 0.95rem;
}

/* 页脚 */
.footer {
	background: #2a3142;
	color: #eee;
	padding: 30px 0 30px;
}

.footer-grid {
	text-align: center;
	margin-bottom: 30px;
}

.copyright {
	text-align: center;
	padding-top: 30px;
	border-top: 1px solid #3a4255;
	color: #999;
	font-size: 0.9rem;
}

.copyright a {
	color: #fff;
}

/* 响应式调整 */
@media (max-width: 992px) {
	.hero-title {
		font-size: 2.3rem;
	}
}

@media (max-width: 768px) {
	.nav-container {
		flex-direction: column;
	}

	.brand {
		margin-bottom: 15px;
	}

	.nav-menu {
		flex-wrap: wrap;
		justify-content: center;
	}

	.nav-item {
		margin: 0 15px 10px;
	}

	.hero {
		padding: 90px 0 70px;
	}

	.hero-title {
		font-size: 2rem;
	}

	.section-title {
		font-size: 1.8rem;
	}

	/* 移动端每行1个优势卡片 */
	.advantage-grid {
		grid-template-columns: 1fr;
	}
}

@media (max-width: 576px) {
	.hero-title {
		font-size: 1.8rem;
	}

	.hero-subtitle {
		font-size: 1.1rem;
	}

	.feature-tag {
		margin-bottom: 10px;
		font-size: 0.9rem;
	}
}