.Box1 {
     margin-top: 50px;
 }

 .Box1 .container-md.row {
     margin: 0 auto;
 }

 .Box1 .tltle {
     text-transform: uppercase;
     font-family: 'Swis721 Hv BT Heavy';
     font-size: 43px;
     max-width: 95%;
     line-height: 1.2;
 }

 .Box1 .Text .about {
     position: relative;
     padding-left: 60px;
     color: #0D4D83;
     font-weight: bold;
     margin-bottom: 20px;
     display: block;
 }

 .Box1 .Text .about::before {
     position: absolute;
     content: '';
     left: 0;
     top: 50%;
     transform: translateY(-50%);
     width: 40px;
     height: 2px;
     background-color: #0D4D83;
 }

 .Box1 .Text .p1 {
     margin-top: 40px;
 }

 .Box1 .Text .t2 {
     margin-top: 70px;
     display: flex;
     justify-content: end;
     position: relative;
 }

 .Box1 .Text .t2 .p2 {
     max-width: 70%;
 }

 .Box1 .Text .t2 .box {
     position: absolute;
     left: -50%;
     background-color: #0D4D83;
     display: flex;
     color: white;
     align-items: center;
     width: 70%;
     height: 100%;
 }


@media screen and (max-width:1400px) {
    .Box1 .Text .t2 .box{ 
        left: -77%; 
        width: 95%; 
    }
}
 .Box1 .Text .t2 .box h5 {
     /* font-size: 90px; */
     font-family: 'Humnst777 BlkCn BT Black';
     margin: 0;
     padding: 10px;
     display: flex;
     justify-content: center;
     align-items: center;

 }


 .Box1 .Text .t2 .box span {
     font-family: 'Swis721 Hv BT Heavy';
     text-transform: uppercase;
     max-width: 40%;
 }

 .Box1 .Text .t2 .box img {
     position: absolute;
     height: 140%;
     right: -5%;
     bottom: 0;
 }
@media screen and (max-width:1200px) {
    .Box1 .Text .t2 .box h5{
        font-size: 125px !important;
    }
    .Box1 .Text .t2 .box img{
        height: 85%;
    }
}

 .Box1 .Imgs {
     overflow: hidden;
     padding-right: 20px;
 }

 .Box1 .Imgs img {
     width: 100%;
     height: 80%;
     object-fit: cover;
 }

 .Box1 .Text {
     padding-left: 20px;
 }

@media screen and (max-width:991px) {
    .Box1 .Imgs{
        padding: 0;
    }
    .Box1 .Imgs img{
        height: 300px;
    }
    .Box1 .tltle{
        max-width: 93%;
    }

    .Box1 .Text .t2{
        margin-top: 20px;
    }
    .Box1 .Text .t2 .p2{
        max-width: 100%;
    }
    .Box1 .Text .t2 .box{
        background-color: transparent;
    }
    .Box1 .Text .t2 .box span,
    .Box1 .Text .t2 .box h5{
        display: none;
    }
    .Box1 .Text .t2 .box img { 
        right: -82%;
        bottom: 240%;
    }
}
@media screen and (max-width:768px) {
    .Box1 .Text .t2 .box img{
        display: none;
    }
}
@media screen and (max-width:450px) {
    .Box1{
        margin-top: 0;
    }
}


 .Box2 {
     margin-top: 100px;
     padding-bottom: 20px;
 }

 .Box2 .tit {
     font-size: 30px;
     font-style: italic;
     font-family: 'Swis721 Hv BT Heavy';
     position: relative;
     padding-bottom: 30px;
 }

 .Box2 .box {
     margin-bottom: 10px;
     box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
     padding: 20px 30px;
     height: 100%;
     margin-bottom: 10px;
     background: linear-gradient(to right, #ffffff, #f8f9fa);
     border-radius: 12px;
     transition: transform 0.3s ease, box-shadow 0.3s ease;

 }

 .Box2 .box:hover {
     transform: translateY(-5px);
     box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
 }

 .Box2 .box h6 {
     font-weight: bold;
     font-size: 22px;
 }

 .Box2 .box i {
     font-size: 40px;
     color: #0E4D84;
     position: relative;
     padding: 10px;

     line-height: 70px;
     text-align: center;
     z-index: 1;
 }

@media screen and (max-width:991px) {
    .Box2 .col-lg-3.col-md-6:nth-child(1),
    .Box2 .col-lg-3.col-md-6:nth-child(2){
        margin-bottom: 30px;
    }
}
@media screen and (max-width:768px) { 
    .Box2 .col-lg-3.col-md-6:nth-child(3){
        margin-bottom: 30px;
    }
}

 .Box3 {
     margin-top: 100px;
     background-image: url('../img/about/bj.jpg');
     background-attachment: fixed;
     background-position: center top;
     background-repeat: no-repeat;
     background-size: cover;
     padding-top: 120px;
     padding-bottom: 220px;
     position: relative;
     z-index: 1;
 }
 .Box3::before {
     background: -webkit-linear-gradient(-45deg, #0582CA 0%, rgba(9, 76, 127, 0.85) 55%, rgba(122, 186, 30, 0.93) 100%) !important;
     content: "";
     height: 100%;
     left: 0;
     position: absolute;
     top: 0;
     width: 100%;
     z-index: -1;
 }
 .Box3 .video-one-link {
    border: none;
     display: -webkit-box;
     display: -ms-flexbox;
     display: flex;
     width: 80px;
     height: 80px;
     text-align: center;
     -webkit-box-align: center;
     -ms-flex-align: center;
     align-items: center;
     -webkit-box-pack: center;
     -ms-flex-pack: center;
     justify-content: center;
     position: relative;
     background-color: #ffffff;
     border-radius: 50%;
     -webkit-animation: inctechPulse 3s infinite;
     animation: inctechPulse 3s infinite;
     color: #104F86;
     box-shadow: 11px 3px 20px 1px rgba(204, 207, 219, .7);
     left: 50%;
     top: 50%;
     transform: translate(-50%, -50%);
 }
 .Box3 .video-one__link i {
     font-size: 40px;
 }
 .Box3 .video-zoom {
     position: absolute;
     width: 160px;
     height: 160px;
     z-index: 0;
     top: -40px;
     right: -40px;
     opacity: 0;
     margin: 0;
     border-radius: 100px;
     background-color: rgba(14, 78, 132, 0.6) !important;
     -webkit-animation: ripple 3s linear 3s infinite;
     animation: ripple 2s linear 3s infinite; 
 }
 .Box3 .video-zoom:nth-child(3) {
     animation-delay: .6s;
     -webkit-animation-delay: .6s;
 }
 .Box3 .video-zoom:nth-child(2) {
     animation-delay: .3s;
     -webkit-animation-delay: .3s;
 }

 @keyframes ripple {
     0% {
         opacity: 1;
         -webkit-transform: scale(0);
         transform: scale(0)
     }

     100% {
         opacity: 0;
         -webkit-transform: scale(1);
         transform: scale(1)
     }
 }

 .Box3 {
     color: white;
     text-align: center;
 } 
 .Box3 h6{
    font-size: 36px;
    font-family: 'Swis721 Hv BT Heavy';
    max-width: 60%;
    margin: 0 auto;
 }
 .Box3 p{
    font-size: 15px;
    max-width: 60%;
    margin: 0 auto;
    margin-top: 20px;
 }

 .Box4{
    position: relative;
    top: -155px;
    z-index: 4;
    color: white;

 }
 .Box4 .container-md.row{
    margin: 0 auto;
    padding: 100px 30px;
    background-color: #0F4F86;
    text-align: center;
    position: relative;
}
.Box4 .container-md.row::before{
    position: absolute;
    width: 95%;
    height: 30px;
    background-color: #86C41E;
    content: '';
    left: 50%;
    transform: translateX(-50%);
    bottom: -30px;
}
.Box4  h5{
    font-size: 50px;
    font-family: 'Humnst777 BlkCn BT Black';
}
 .Box4 h6{
    text-transform: uppercase;
    font-family: 'Swis721 Hv BT Heavy';
 } 
 .Box5{
    padding-bottom: 50px;
 }
 .Box5 .tit {
    font-size: 30px;
    font-style: italic;
    font-family: 'Swis721 Hv BT Heavy';
    position: relative;
    padding-bottom: 30px;
}
.waterfall-container { 
    margin: 0 auto;
    padding: 0;
}

/* 瀑布流核心布局 - 使用CSS Columns */
.waterfall-grid {
    /* 移动端默认1列 */
    column-count: 1;
    column-gap: 15px;
    break-inside: avoid;
}

/* 平板设备 - 2列布局 */
@media (min-width: 768px) {
    .waterfall-grid {
        column-count: 2;
    }
}

/* 桌面设备 - 3列布局 */
@media (min-width: 1024px) {
    .waterfall-grid {
        column-count: 3;
    }
}

/* 大屏幕设备 - 4列布局 */
@media (min-width: 1400px) {
    .waterfall-grid {
        column-count: 3;
    }
}

.waterfall-item {
    margin-bottom: 15px;
    break-inside: avoid; /* 防止元素在列中间断开 */
}

.waterfall-item img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    display: block; /* 移除图片底部间隙 */
}

.waterfall-item img:hover {
    transform: scale(1.03);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    z-index: 10; /* 悬停时提升层级 */
}

/* 加载动画效果 */
.waterfall-item img {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 0.5s ease forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 图片加载顺序优化 */
.waterfall-item:nth-child(1) img { animation-delay: 0.1s; }
.waterfall-item:nth-child(2) img { animation-delay: 0.2s; }
.waterfall-item:nth-child(3) img { animation-delay: 0.3s; }
.waterfall-item:nth-child(4) img { animation-delay: 0.4s; }
.waterfall-item:nth-child(5) img { animation-delay: 0.5s; }
.waterfall-item:nth-child(6) img { animation-delay: 0.6s; }
.waterfall-item:nth-child(7) img { animation-delay: 0.7s; }
.waterfall-item:nth-child(8) img { animation-delay: 0.8s; }