@charset "utf-8";

header{
    height: 7rem;
    position: fixed;
	background: var(--white);
	box-shadow: var(--shadow-md);
    top: 0;
    left: 0;
    width: 100%;
    z-index: 999;
    transition: all 0.3s ease;
}

.bg-white{
	background-color: #fff;
}

section{
    padding: 5em 0;
}

.container {
	width: 76%;
	max-width: 120rem;
	text-align: center;
	margin: 0 auto;
}
.navbar {
	display: flex;
	justify-content: space-between;
	align-items: center;
	height: 7rem;
	width: 100%;
}

.logo {
	height: 3.6rem;
}
.logo img{
	height: 3.6rem;
}


.nav-menu {
	display: flex;
	list-style: none;
	gap: 3.6rem;
}

.nav-link {
	text-decoration: none;
	color: var(--primary);
	font-size: 1.6rem;
	font-weight: 500;
	transition: all 0.3s ease;
	position: relative;
	display: flex;
	align-items: center;
	gap: 0.6rem;
}

.nav-link::after {
	content: '';
	position: absolute;
	bottom: -4px;
	left: 0;
	width: 0;
	height: 2px;
	background: var(--primary);
	transition: width 0.3s ease;
	border-radius: 2px;
}

.nav-link:hover {
	color: var(--primary-dark);
    text-decoration: none;
}

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

.mobile-menu-btn {
	display: none;
	font-size: 2.6rem;
	color: var(--primary);
	background: none;
	border: none;
	cursor: pointer;
}

/* 玻璃效果 */
.glass-effect {
	background: var(--bg-glass);
	backdrop-filter: blur(10px);
	border: 1px solid var(--border);
	box-shadow: 0 8px 32px var(--shadow-sm);
}

/* 遮罩 */
.overlay {
	position: fixed;
	top: 7rem; left: 0; right: 0; bottom: 0;
	background: rgba(0,0,0,0.3);
	z-index: 9;
	display: none;
}
.overlay.show {
	display: block;
}


/* 首页横幅 - 使用指定背景图 */
.hero {
	margin-top: 7rem;
	background: url('/Public/home/img/first.jpg') center/cover no-repeat !important;
	text-align: center;
	padding: 14rem 0;
	position: relative;
	overflow: hidden;
	min-height: 65vh;
	display: flex;
	align-items: left;
	color: var(--white) !important;
}

/* 增加一层柔和遮罩，保证文字清晰可见 */
.hero::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: rgba(0, 0, 0, .5);
	pointer-events: none;
	z-index: 1;
}

.hero-title {
	font-size: 4rem !important;
	position: relative;
	color: var(--white) !important;
	z-index: 2;
}

.hero-title-sub{
	position: relative;
	color: var(--white) !important;
	z-index: 2;
}

.hero-desc {
	margin: 1em auto 2em;
	color: var(--white) !important;
	position: relative;
	z-index: 2;
}

/* 主标题 */
.title{
	font-size: 3.2rem;
	color: var(--text-light);
	position: relative;
	margin-bottom: 2em;
}

section .title::after {
    content: '';
    width: 7rem;
    height: 0.4rem;
    background: var(--primary);
    position: absolute;
    bottom: -1.8rem;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 0.4rem;
}

/* 副标题 */
.title-sub{
	font-size: 2.4rem;
	color: var(--text-primary);
	margin: 1em auto;
}

.desc {
	font-size: 1.6rem;
	color:var(--text-regular);
	margin: .5em auto;
}

.features-grid{
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(min(30rem, 100%), 1fr));
	margin: 2em auto;
	gap: 6rem;
}

.features-item{
	max-width: 100%;
}



.features-item img{
	border-radius: var(--radius);
	max-width: 100%;
    width: 50rem;
    height: 30rem;
	box-shadow: var(--shadow-md);
    border: solid 1px var(--border);
    object-fit: cover;    /* 核心：不压缩，保持比例，超出裁剪 */
    object-position:top;
}

.trans-moveup{
    transition: all 0.4s ease;
}
.trans-moveup:hover{
    transform: translateY(-6px);
}


/* =============== 优势模块 ===============*/
.advantage-grid{
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(min(20rem, 100%), 1fr));
	margin: 2em auto;
	gap: 3rem;
}

/* .advantage-item{
	background-color: var(--white);
	border-radius: var(--radius);
	box-shadow: var(--shadow-sm);	
    text-align: center;
    overflow: hidden;
} */

.advantage-item {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.advantage-item:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(22, 93, 255, 0.1);
}


.advantage-box:hover{
	box-shadow: 5px 5px 10px #ccc;
}

.advan-img{
    background-color: var(--primary-light);
    padding: 3em;
}

.advan-desc{
    padding: 2em;
}

/* 适合人群模块 */
.audience-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(min(12rem, 100%), 1fr));
	gap: 2em;
	margin-top: 2em;
}

.audience-item {
	text-align: center;
	padding: 1.5em;
	box-shadow: var(--shadow-md);
	border-radius: var(--radius);
    border: 1px solid var(--border);
}

.audience-item:hover{
	box-shadow: var(--shadow-lg);
}

.audience-item p{
	margin-top: 1em;
}


/*========== 联系我们模块 ==========*/
.contact-grid {
	display: flex;
	justify-content: center;
	flex-wrap: wrap;
	gap: 3em;
}

.contact-item {
	text-align: center;
}

.qrcode-box {
	width: 16rem;
	height: 16rem;
	border-radius: 1.2rem;
	display: flex;
	align-items: center;
	justify-content: center;
	margin-bottom: 1.5rem;
	overflow: hidden;
	border: dashed 1px var(--border);
}

.qrcode-box img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	border-radius: var(--radius);
}

.contact-label {
	margin-bottom: 0.5rem;
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 0.6rem;
}


/* 鼠标悬浮 */
footer a{
	color: var(--text-placeholder);
}
footer a:hover {
  text-decoration: underline;
}

.footer-grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(12rem, 100%), 1fr));
  margin: 2em 0;
}


/* .use-box{
	position: absolute;
	width:100%;
	height: 560px;
	top:3rem;
	color: #fff;
	background: rgba(0,0,0,0.5);
}

.use{
	position: absolute;
	top: 10em;
	right: 18em;
	text-align: right;
	
}

.use-box h2{
	font-size: 38px;
	font-weight: normal;
}

.use-box p{
	font-size: 18px;
	margin-top: 18px;
} */

/*.use-a{
	padding:12px 18px;
	text-decoration:none;
	display:inline-table;
	color:#fff;
	border-radius:2px;
	margin:48px 0;
	border: 1px solid #ccc;
	display:block;
	width:180px;
	font-size: 16px;
	background: rgb(0,0,0,0.3);
	box-shadow: 1px 1px 2px 2px #666;
	text-align: center;
}

.use-a:hover{
	background: rgb(255,255,255,0.3);
	box-shadow: 1px 1px 2px 2px #ccc;
}
*/


.download{
	border: solid 1px var(--border);
	border-radius: var(--radius);
	box-shadow: var(--shadow-md);
	padding: 1em 3em;
}

.download:hover{
	box-shadow: var(--shadow-lg);
}



.down-img{
	width: 4rem;
}

/* .icon-windows{
	background-image: url("https://cdn.fnwnet.cn/lt/home/img/windows.jpg");
}

.icon-chrome{
	background-image: url("https://cdn.fnwnet.cn/lt/home/img/chrome.png");
} */


.btn{
    display: inline-block;
    padding: .8em 1.5em;    
    color: var(--white);
    border: none;
    border-radius: var(--radius);
    text-decoration: none;
    box-shadow: rgba(0, 0, 0, 0.4) 20px 20px 60px;
    transition-duration: .3s;
    cursor: pointer;
	position: relative;
	z-index: 2;
}

.btn:hover{
    transform: scale(1.05, 1.05);
    text-decoration: none;
}

.btn-go{
	/* background: #f9244b; */
	background-color: var(--danger);
	margin: 2em 0;
}

.btn-go::after{
    content: ">>";
    margin-left: .5em;
}

.btn-download{
	background:var(--primary);
}
.btn-download:hover{
    background:var(--primary-dark);
}

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

.nowrap-center{
	display: flex;
    justify-content:space-around;
	align-items: center;
}

.nowrap-left{
	display: flex;
    justify-content:flex-start;
    align-items: center;
}

.icon{
	width:50px;
	height:50px;
	background-image: url('https://cdn.fnwnet.cn/lt/home/img/icon.png');
	margin:auto;
}

.icon-01{
	background-position: 0 0;
}
.icon-02{
	background-position: -50px 0;
}
.icon-03{
	background-position: -100px 0;
}
.icon-04{
	background-position: -150px 0;
}
.icon-05{
	background-position: -200px 0;
}
.icon-06{
	background-position: -250px 0;
}
.icon-07{
	background-position: -300px 0;
}
.icon-08{
	background-position: -350px 0;
}

.icon-10{
	background-position: -400px 0;
}

.icon-11{
	background-position: -450px 0;
}

.icon-12{
	background-position: -500px 0;
}

.icon-13{
	background-position: -550px 0;
}

.gotop{
	position: fixed;
	right: .5em;
	bottom: 30vh;
	width: 48px;
	height: 48px;
	background: rgba(0,0,0,0.2);
	border-radius: 6px;
	background-image: url('https://cdn.fnwnet.cn/lt/home/img/top.png');
	background-size:cover;
	opacity:0.5;
	display: none;
	z-index: 9999999;
}

.gotop:hover{
	opacity: 1;
	background-image: url('https://cdn.fnwnet.cn/lt/home/img/top_02.png');
}

.danger{
	color: var(--danger);
}



/* .step{
	text-align: left;
	margin:1em auto 2em auto;
}
.step li{
	margin: .5em;
}
.step-img{
	width:100%;
	border: 1px solid #ccc;
}
.video-box{
    width: 99%;
    border: 2px solid #ccc;
    margin:12px auto;
}

video{
	width: 100%;
}

.install-box{
	width:90%;
	padding: 24px 5%;
	margin:24px auto;
	box-shadow: 0px 0px 2px 2px #ddd;
	background-color: #fff;
	text-align: left;
}

.install-box:hover{
	box-shadow: 0px 0px 2px 2px #946134;
} */

/* 响应式适配 */
@media (max-width: 768px) {
	.nav-menu {
        position: fixed;
        top: 6rem;
        left: -100%;
        flex-direction: column;
        background-color: var(--white);
        width: 60vw;
        height: calc(100vh - 6rem);
        text-align: center;
        padding-top: 4rem;
        transition: 0.4s;
        box-shadow: var(--shadow-md);
    }

    .features-item{
        text-align: center;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-link {
        justify-content: center;
        font-size: 1.8rem;
        padding: 1.5rem 0;
    }

    .order-after{
        order: 2;
    }

	.mobile-menu-btn{
		display: block;
	}
	
	.hero {
		min-height: 40vh;
	}
	.container{
		width: 90vw;
	}
}