* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
	font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
}
:root {
 --primary: #165DFF;
 --primary-dark: #0E42D2;
 --secondary: #FF7D00;
 --dark: #1D2129;
 --gray: #4E5969;
 --light: #F2F3F5;
 --white: #FFFFFF;
 --shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}
body {
	color: var(--dark);
	line-height: 1.6;
	overflow-x: hidden;
	padding-top: 72px;
}
/* 导航栏 */
        .navbar {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	background: rgba(255, 255, 255, 0.98);
	box-shadow: var(--shadow);
	z-index: 999;
}
.nav-container,  .container,  .banner-content,  .footer-container {
	width: 80%;
	margin: 0 auto;
	padding: 15px 0;
}
.nav-container {
	display: flex;
	align-items: center;
	justify-content: space-between;
}
.logo {
	display: flex;
	align-items: center;
	text-decoration: none;
	gap: 10px;
}
.logo-img {
	max-width: 500px;
	max-height: 89px;
	display: block;
}
.nav-menu {
	display: flex;
	list-style: none;
	gap: 45px;
}
.nav-menu li a {
	text-decoration: none;
	color: var(--dark);
	font-size: 16px;
	font-weight: 500;
	transition: 0.3s;
}
.nav-menu li a:hover {
	color: var(--primary);
}
.top-phone {
	text-align: right;
	padding-left: 20px;
}
.top-phone p {
	font-size: 13px;
	color: var(--gray);
	line-height: 1.2;
}
.top-phone a {
	display: block;
	color: var(--primary-dark);
	font-size: 26px;
	font-weight: bold;
	text-decoration: none;
	letter-spacing: 1px;
	line-height: 1.4;
}
.top-phone a:hover {
	color: var(--primary);
}
/* 横幅 */
        .banner {
	height: 620px;margin-top: 3em;
	background: linear-gradient(135deg, var(--primary-dark), var(--primary));
	color: var(--white);
	position: relative;
	overflow: hidden;
	display: flex;
	align-items: center;
}
.banner-bg-svg {
	position: absolute;
	right: 0;
	bottom: 0;
	width: 60%;
	height: 100%;
	opacity: 0.15;
	pointer-events: none;
}
.banner-content {
	display: flex;
	align-items: center;
	justify-content: space-between;
}
.banner-text {
	flex: 1;
}
.banner h1 {
	font-size: 48px;
	margin-bottom: 22px;
	line-height: 1.2;
}
.banner p {
	font-size: 20px;
	margin-bottom: 40px;
	opacity: 0.95;
	max-width: 620px;
}
.banner-btn {
	display: inline-block;
	padding: 15px 48px;
	background: var(--secondary);
	color: var(--white);
	font-size: 17px;
	font-weight: bold;
	border-radius: 50px;
	text-decoration: none;
	transition: 0.3s;
	box-shadow: 0 6px 20px rgba(255, 125, 0, 0.4);
}
.banner-btn:hover {
	transform: translateY(-3px);
	background: #ff6a00;
}
.banner-img {
	flex: 1;
	text-align: right;
}
.banner-svg {
	width: 460px;
	height: 380px;
}
/* 板块标题区域：独立上下结构 */
        .section-title {
	width: 100%;
	text-align: center;
	margin-bottom: 40px;
	display: block;
}
.section-title h2 {
	font-size: 36px;
	color: var(--dark);
	margin-bottom: 14px;
}
.section-title p {
	font-size: 17px;
	color: var(--gray);
	max-width: 720px;
	margin: 0 auto;
}
/* 核心优势 */
        .advantage {
	padding: 90px 0;
	background: var(--light);
}
.advantage-grid {
	width: 100%;
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 28px;
}
.advantage-card {
	background: var(--white);
	padding: 38px 28px;
	border-radius: 14px;
	box-shadow: var(--shadow);
	transition: 0.4s;
	text-align: center;
}
.advantage-card:hover {
	transform: translateY(-8px);
	box-shadow: 0 15px 40px rgba(22, 93, 255, 0.15);
}
.card-icon {
	width: 68px;
	height: 68px;
	margin: 0 auto 18px;
}
.advantage-card h3 {
	font-size: 22px;
	color: var(--primary);
	margin-bottom: 14px;
}
.advantage-card p {
	color: var(--gray);
	font-size: 15px;
	line-height: 1.7;
}
/* 核心服务 */
        .service {
	padding: 90px 0;
	background: var(--white);
}
.service-grid {
	width: 100%;
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 35px;
}
.service-item {
	display: flex;
	align-items: center;
	gap: 22px;
	padding: 28px;
	border-left: 4px solid var(--primary);
	background: #f8f9ff;
	border-radius: 0 10px 10px 0;
}
.service-icon {
	width: 75px;
	height: 75px;
	flex-shrink: 0;
}
.service-text h3 {
	font-size: 24px;
	color: var(--dark);
	margin-bottom: 10px;
}
.service-text p {
	font-size: 15px;
	color: var(--gray);
	line-height: 1.7;
}
/* 承诺保障 */
        .promise {
	padding: 90px 0;
	background: linear-gradient(135deg, #f5f7ff, #e8f0ff);
}
.promise-list {
	width: 100%;
	display: flex;
	justify-content: space-between;
	flex-wrap: wrap;
	gap: 25px;
}
.promise-item {
	flex: 1;
	min-width: 220px;
	text-align: center;
	padding: 20px 10px;
}
.promise-icon {
	width: 58px;
	height: 58px;
	margin: 0 auto 14px;
}
.promise-item h3 {
	font-size: 20px;
	color: var(--primary-dark);
	margin-bottom: 10px;
}
.promise-item p {
	color: var(--gray);
	font-size: 15px;
}
/* 页脚：左右布局 版权+联系方式 */
        .footer {
	background: var(--dark);
	color: var(--white);
	padding: 35px 0;
}
.footer-container {
	display: flex;
	align-items: center;
	justify-content: space-between;
}
.footer-copyright {
	font-size: 15px;
	opacity: 0.9;
}
.footer-contact {
	font-size: 15px;
	opacity: 0.9;
}
.footer-contact a {
	color: #fff;
	text-decoration: none;
}

        /* 响应式 - 平板 */
        @media (max-width: 992px) {
 .nav-container,  .container,  .banner-content,  .footer-container {
 width: 90%;
}
 .nav-menu {
 gap: 25px;
}
 .banner {
 height: auto;
 padding: 80px 0;
}
 .banner-content {
 flex-direction: column;
 text-align: center;
 gap: 40px;
}
 .banner h1 {
 font-size: 38px;
}
 .banner-svg {
 width: 340px;
 height: 280px;
}
 .top-phone p {
 display: none;
}
 .footer-container {
 flex-direction: column;
 gap: 15px;
 text-align: center;
}
 .advantage-grid {
 grid-template-columns: repeat(2, 1fr);
}
 .service-grid {
 grid-template-columns: 1fr;
}
}

        /* 响应式 - 手机 */
        @media (max-width: 768px) {
 .nav-container,  .container,  .banner-content,  .footer-container {
 width: 95%;
}
 .nav-menu {
 gap: 15px;
}
 .nav-menu li a {
 font-size: 14px;
}
 .top-phone a {
 font-size: 15px;
}
 body {
 padding-top: 65px;
}
 .advantage-grid {
 grid-template-columns: 1fr;
}
}