body {
  color: #666;
  margin: 0;
  padding: 0;
  font-family: '微软雅黑';
  font-size: 16rem;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
}
p {
  margin: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  /*width: 100%;max-width: 100%;*/
  vertical-align: middle;
}


.flexCenter{    
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
}

.flexStart{    
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: start;
    -ms-flex-pack: start;
    justify-content: flex-start;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
}

.flexBetween{    
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
}

.flexAround{    
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-pack: distribute;
    justify-content: space-around;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
}

.flexEnd{    
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: end;
    -ms-flex-pack: end;
    justify-content: flex-end;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
}

.flexColumn{    
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
}

.clearfix:after{
  content: '';
  display: block;
  clear: both;
  width: 0;height: 0;
}
.fl{float: left;}
.fr{float: right;}


/* 全屏滚动容器 */
#fullpage {
    width: 100%;
    height: 100vh;
}

/* 通用section样式 */
.section {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background:#000;
}
.video-mask{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.video-mask img{
    width: 100%;
    height:100%;
    object-fit: cover;
}
/* 背景视频通用样式 */
.bg-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    z-index: 0;
    object-fit: cover;
}

/* 内容容器 */
.content {
    position: relative;
    z-index: 10;
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

/* ==================== 第一屏样式 ==================== */
#section1 {
    
}

.section1-title {
    font-size: 80rem;
    font-weight: 700;
    color:#fff;
    letter-spacing:20rem;
    margin-bottom:10rem;
}

.section1-subtitle {
    font-size: 20rem;
    letter-spacing: 10rem;
    color: #ccc;
    opacity: 0;
}

/* 向下箭头 */
.scroll-arrow {
    position: absolute;
    bottom: 6vh;
    left: 50%;
    margin-left:-24px;
    width: 48px;
    animation: arrow-bounce 1.5s linear infinite;
    cursor: pointer;
    z-index: 20;
}
.scroll-arrow image{
  width: 100%;
}

@keyframes arrow-bounce {
    0% {
        transform: translateY(0%);
    }
    100% {
        transform: translateY(30px);
    }
}

/* ==================== 第二屏：数字创意 ==================== */
#section2 {
    background: url('../images/leftbg.png') no-repeat center center/cover;
}

.section2-content {
    top:15%;
    text-align: left;
    width: 90%;
    max-width: 1200px;
}

.section-title {
    font-size: 60rem;
    margin-bottom: 40rem;
    opacity:0;
    color:#fff;
}

.section-desc {
    font-size: 20rem;
    color: #B6B2C8;
    line-height: 1.6;
    margin-bottom: 40rem;
    opacity: 0;
}

.btn-red {
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0;
    background:none;
}
.btn-red .tit{
    padding: 0 50rem;
    height:50rem;
    font-size: 16rem;
    color: #222;
    line-height:50rem;
    border-radius:50rem;
    background:#fff;
}
.btn-red:hover .tit {
    background: #ff0000;
    color:#fff;
}

.btn-arrow {
    width: 50rem;
    height: 50rem;
    background: #fff url('../images/nosel.png') no-repeat center center;
    border-radius: 50%;
}
.btn-red:hover .btn-arrow {
    background: #ff0000 url('../images/sel.png') no-repeat center center;
}

/* ==================== 第三屏：数字仿真 ==================== */
#section3 {
    
}

.section3-content {
    top:15%;
    text-align: right;
    width: 90%;
    max-width: 1200px;
    margin-left: auto;
}

.btn-white {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.8rem;
    background: #fff;
    color: #000;
    border: none;
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0;
}

.btn-white:hover {
    background: #f0f0f0;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.2);
}

.btn-white .btn-arrow {
    background: #000;
    color: #fff;
}

/* ==================== 第四屏：人工智能 ==================== */
#section4 {
    
}

.section4-content {
    top:15%;
    text-align: left;
    width: 90%;
    max-width: 1200px;
}

/* ==================== 第五屏：选择我们 + 页脚 ==================== */
#section5 {
    background:#000 url('../images/bg5.png') no-repeat left center;
    /*flex-direction: column;*/
    /*justify-content: space-between;*/
    /*padding: 5vh 0;*/
    height: auto;
    min-height: 100vh;
}

.choose-us {
    width: 90%;
    margin: 0 auto;
    text-align: center;
    /*margin-bottom: 5vh;*/
}
.choose-us .tit_pic{
  max-width:100%;
} 

.choose-us-title {
    font-size: clamp(1.8rem, 4vw, 2.2rem);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.choose-us-subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: #ccc;
    margin-bottom: 3rem;
}

.features-grid {
    max-width:1350px;
    margin:0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.feature-item {
    text-align: center;
    padding: 1.5rem;
    border-right: 1px solid #333;
}

.feature-item:last-child {
    border-right: none;
}

.feature-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto 1rem;
    background: linear-gradient(135deg, #330000, #660000);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #ff3333;
    box-shadow: 0 0 20px rgba(255, 51, 51, 0.3);
}

.feature-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.feature-desc {
    font-size: 0.9rem;
    color: #aaa;
    line-height: 1.5;
}

.partner-section {
    width: 90%;
    max-width: 1400px;
    margin: 30rem auto;
    text-align: center;
    overflow:hidden;
}
.partner-section .bd{
    margin-top:40rem;
}

.partner-logos {
    margin-top:50rem;
    overflow:hidden; 
    zoom:1;
}
.partner-logos li{
     float:left; _display:inline; overflow:hidden; text-align:center;width: 220px;
}
.partner-logo {
    height: 50px;
}


#section6{
  background:url('../images/bg_all.png') no-repeat center bottom;
}
/* 页脚样式 */
footer {
    width: 100%;
    margin: 0 auto;
    max-width:1400px;
}
footer .bot_txt{
    max-width:100%;
    margin-top:30rem;
}
.footer-content {
    padding:50rem 0 20rem;
    border-top: 1px solid #545557;
    border-bottom: 1px solid #545557;
    margin: 0 auto;
    display: grid;
    grid-template-columns: auto auto auto auto auto;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-qrcode {
    display: flex;
    gap: 1rem;
    margin-top: 40rem;
}

.qrcode-item {
    text-align: center;
    margin-right:30rem;
}

.qrcode-item img {
    width: 100px;
    height: 100px;
}

.footer-column h4 {
    font-size: 16rem;
    color:#806666;
    margin-bottom: 30rem;
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 30rem;
}

.footer-column ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 16rem;
}

.footer-column ul li a:hover {
    color: #ff0000;
}

.footer-bottom {
    max-width: 1400px;
    margin: 50rem auto 0;
    text-align: center;
    font-size: 16rem;
    color: #666;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 999;
    padding: 30rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.2rem;
    font-weight: 600;
    color: #fff;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    gap: 50rem;
    list-style: none;
}

.nav-menu li a {
    color: #fff;
    text-decoration: none;
    font-size: 18rem;
    transition: color 0.3s ease;
}

.nav-menu li a:hover {
    color: #ff0000;
}

.mobile-menu-btn {
    display: none;
    font-size: 50rem;
    cursor: pointer;
    color:#fff;
}

/* 响应式适配 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .section2-content, .section3-content, .section4-content {
        text-align: center;
    }

    .feature-item {
        border-right: none;
        border-bottom: 1px solid #333;
        padding-bottom: 1.5rem;
    }

    .feature-item:last-child {
        border-bottom: none;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* 光晕背景效果 */
/*.glow-bg {*/
/*    position: absolute;*/
/*    top: 50%;*/
/*    left: 50%;*/
/*    transform: translate(-50%, -50%);*/
/*    width: 60%;*/
/*    height: 60%;*/
/*    background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0) 70%);*/
/*    z-index: 1;*/
/*    pointer-events: none;*/
/*}*/