*{
    margin: 0;
    padding: 0;
    /* font-family: 'Roboto','Arial','Helvetica','OpenSans'; */
    font-family: 'Muli';
}
#backtop {
    width: 50px;
    height: 50px;
    background: tomato;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    position: fixed;
    bottom: 40px;
    right: 20px;
    cursor: pointer;
    z-index: 5;
  }
.TQ{
    width: 100%;
    /* background:linear-gradient(180deg,#779399,#0a495b,#0a1a44); */
    background:linear-gradient(180deg,#A5CAD2,#05999e,#0a1a44);


}
.Header{
    height: 1700px;
    /* width: 100%; */
    background-position: center;
    background-size: cover;
    justify-content: space-between;
    margin: 0px auto;
    /* background-color: #008979; */
    
}
.Header .H1{
    min-height: 100px;
    width: 100%;
    background-position: center;
    background-size: cover;
    position: relative;
    margin: 0px auto;
    /* background:linear-gradient(180deg,#A5CAD2,#017a7e,#0a1a44); */
    /* background: linear-gradient(135deg ,rgba(31, 182, 228, 0.349),rgba(31, 182, 228, 0.547)); */
}
.glass{
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0));
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 10px;
    border:1px solid rgba(255, 255, 255, 0.18);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}
.imglogo{
    border-radius: 50%;
    width:80px ; height: auto;
    
}
nav{
    display: flex;
    padding: 2% 6% 1%;
    justify-content: space-between;
    align-items: center;
    /* background-color: sandybrown; */
    /* background-color:#F0EDCF; */
    margin: 0px auto;
    height: auto;
    
}
.nav-links{
    flex: 1;
    text-align: center;
    font-size: large;
    
}
.nav-links ul li{
    list-style: none;
    display: inline-block;
    padding: 8px 12px;
    position: relative;
}
.nav-links ul li a{
    color: #ffff;
    text-decoration: none;
    font-size: 25px;
    transition: 0.3s;
}
.nav-links ul li a:hover{
    color:  #003056;
    size: 20px;
   
}
.nav-links ul li::after{
    content: '';
    width: 0%;
    height: 2px;
    background: #003056;
    display: block;
    margin:auto;
    transition: 0.3s;
}
.nav-links ul li:hover::after{
    width:100%;

}
.headericon ul {
    list-style: none;
    display: inline-block;
    justify-content: space-between;
} 
.headericon ul li{
    justify-content: space-between;
    position: relative;
    padding: 20px;
    
}
.headericon ul .home a{
    text-decoration: none;
    color: #fff;
    font-weight: 600;
    font-size: 1.1rem;
}
.headericon ul .home a:hover{
    background: linear-gradient(135deg ,rgba(255, 255, 255, 0.232),rgba(255, 255, 255, 0.242));
    padding: 0.5em 1em;
    border-radius: 5px;
}
.headericon ul .apply a button {
    background-color: #003056;
    color: #fff;
    padding: 0.8em 2em;
    border-radius: 5px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
    box-shadow: 0 0 1rem #12f7ff;
    font-weight: 700;
}

.headericon ul .apply a button:hover {
    background-color: #086bbb;
    
}
.text-box{
    color: #ffff;
    position: absolute;
    top: 50%;
    left: 50%;
    right: -10%;
    transform: translate(-50%,-50%);
    text-align: center;

   
}
.text-box h2{
    font-size: 6rem;
    color: rgba(167, 154, 154, 0.7);
    -webkit-text-stroke: 0.1vw #837777 ;
    text-transform: uppercase;
    position: relative;
}
.text-box h2::before{
    content:  attr(data-text);
    position: absolute;
    width: 0;
    height: 100%;
    color: #fff;
    
    left: 0;
    top: 0;
    -webkit-text-stroke: 0vw #333;
    overflow: hidden;
    animation: ani 4s linear infinite;
    border-right: 1px solid #008979;
}
@keyframes ani{
    0%,10%,100%{
        width: 0;
        text-shadow:0 0 20px rgba(255, 255, 255,0.5) ;
    }
    50% ,70%{
        width: 100%;
        text-shadow:0 0 20px rgba(255, 255, 255,0.5) ;
    }
}
nav .fa-regular{
    display: none;
}
nav .fa-bars{
    display: none;
}
.Header .H2{
        /* background:linear-gradient(180deg,#A5CAD2,#017a7e,#0a1a44);  */
        background-position: center;
        background-size: cover;
        position:relative;
        width: 100%;
        margin: 0 auto;
        height: 800px;
    
    /* margin: 0px auto; */
    /* background-color: #008979; */
}
.Header .H2 .TV1{
    width: 1450px;
    /* background-color: #07b5bb; */
    margin: 0px auto;
    display: flex;
    gap: 100px;
}


.H2{
    width: 100%;
    height: 600px;
    display: flex;
    /* background-color: #008979; */
}
.astronaut img{
    /* position: absolute; */
    width: 850px;
    height: 700px;
    opacity: 0.7;
    position: relative;
    z-index: 4;
    border-radius: 7%;
    mask-image: radial-gradient(circle, rgba(0,0,0,1) 60%, rgba(0,0,0,0) 80%);
    
}
.box{
    position: relative;
    margin-left: 5%;
    
}
.box .square{
    position:absolute;
    backdrop-filter:blur(5px) ;
    box-shadow: 0 25px 45px rgba(0,0,0,0,1);
    border: 1px solid rgba(255,255,255,0.5);
    border-right: 1px solid rgba(255,255,255,0.2);
    border-bottom: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
    animation: animate 10s linear infinite;
    animation-delay: calc(-1s * var(--i));
    
}
@keyframes animate {
    0%,100%{
        transform: translateY(-40px);

    }
    50%{
        transform: translateY(40px);
    }
    
}
.box .square:nth-child(1){
    top:30px;
    right: -60px;
    width: 100px;
    height: 100px;
}
.box .square:nth-child(2){
    top:250px;
    right: 400px;
    width: 120px;
    height: 120px;
    z-index: 2;
}
 .box .square:nth-child(3){
    bottom:250px;
    right: -90px;
    width: 90px;
    height: 90px;
    z-index: 2;
}
.box .square:nth-child(4){
    bottom:90px;
    right: 280px;
    width: 50px;
    height: 50px;
}
.box .square:nth-child(5){
    top:20px;
    right: 220px;
    width: 60px;
    height: 60px;
} 

.container{
    position: relative;
    width: 450px;
    min-height: 550px;
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    backdrop-filter:blur(5px) ;
    box-shadow: 0 25px 45px rgba(0,0,0,0.1);
    border: 1px solid rgba(255,255,255,0.5);
    border-right: 1px solid rgba(255,255,255,0.2);
    border-bottom: 1px solid rgba(255,255,255,0.2);
    margin-left: 5%;
    margin-top: 20%;
}
.form{
    position: relative;
    width: 100%;
    height: 100%;
    padding: 40px;
}
.form h2{
    position: relative;
    color: #fff;
    font-size: 24px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 40px;
}
.form h2::before{
    content: '';
    position: absolute;
    left: 0;
    bottom: -10px;
    width: 80px;
    height: 4px;
    background: #fff;
}
.form .inputBox {
    width: 100%;
    margin-top: 20px;
    display: flex;
}

.btn{
    display: block;
    color:#fff;
    /* margin-top:300px; */
    padding:5px 10px;
    text-align: center;
}
.btn label{
    background-color: #ffffff66;
    display: inline-block;
    margin:0 20px;
    padding:20px;
    border-radius: 35px;
    margin-top: 20px;
    background-color: #fff;
    color: #333;
    font-size: large;
    font-weight: 700;
   

}
.btn label:hover{
    background-color:#ffffff6a;

}
.modal{
    width:300px;
    margin:auto;
    position: fixed;
    top:50%;
    left:50%;
    transition-delay: 2s;
    transform: translate(-50%, -50%) scale(0);
}
.modal .header{
    background-image: linear-gradient(to top left,#05999e, #86d0e1 );
        min-height:200px;
        border-radius: 30px;
        position: relative;
        padding:20px 20px 100px 20px;
        opacity: 0;
        transition: 0.5s;
        transform: translate(0,70px);
}
.modal img{
    position: absolute;
}
.modal img:nth-child(1){
    top:-30px;
    width:90%;
    left:5%;
    opacity: 0;
    transform: translate(0,70px);
    transition: 0.7s;
}
.modal img:nth-child(2){
    top:170px;
    transform: rotate(80deg);
    width:100px;
    left:-50px;
    opacity:0;
    transition: 1s;

}
.modal img:nth-child(3){
    transform: rotate(-80deg);
    bottom:-90px;
    width:100px;
    right:-40px;
    opacity:0;
    transition: 1s;
}
.modal .content{
    background-color: #e2f0ebd1;
    padding:20px;
    min-height: 100px;
    border-radius: 30px;
    backdrop-filter: blur(20px);
    color:#003056;
    font-family: monospace;
    transform: translate(0,70px);
    opacity: 0;
    transition: 0.5s;
    transition-delay: 0.2s;
}
.modal .confirm{
    text-align: center;
    margin-top:30px;
}
.modal .content label,
.modal .content button{
    display: inline-block;
    border:none;
    padding:10px;
    color:#003056;
    margin: 0 10px;
}
.modal .content label{
    background-color: #ffffffc9;
    width: 70px;
}
.modal .content button{
    background-color: #986FEA;
}
.content .des{
    margin-top: 10px;

}


.modal input[name="setingModal"]{
    display: none;
}
.modal:has(input[name="setingModal"]:checked){
    transition: 0s;
    transform: translate(-50%,-50%) scale(1);
}
.modal:has(input[name="setingModal"]:checked) .header{
    opacity: 1;
    transform: translate(0,0);
}
.modal:has(input[name="setingModal"]:checked) .content{
    transition-delay: 0s;
    opacity: 1;
    transform: translate(0,-70px);
}
.modal:has(input[name="setingModal"]:checked) .header img:nth-child(1){
    opacity: 1;
    transform: translate(0,0);
    transition-delay: 0.3s;
}
.modal:has(input[name="setingModal"]:checked) .header img:nth-child(2){
    opacity: 1;
    transform: rotate(-20deg);
    transition-delay: 0.5s;
    top:-20px;
}
.modal:has(input[name="setingModal"]:checked) .header img:nth-child(3){
    opacity: 1;
    transform: rotate(20deg);
    transition-delay: 0.5s;
    bottom:20px;
}
  
.form .inputBox input{
    width: 100%;
    background: rgba(255,255,255,0.2);
    border: none;
    outline: none;
    padding: 15px 5px;
    border-radius: 35px;
    border: 1px solid rgba(255,255,255,0.5);
    border-right: 1px solid rgba(255,255,255,0.2);
    border-bottom: 1px solid rgba(255,255,255,0.2);
    font-size: 16px;
    letter-spacing: 1px;
    color: #fff;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}
.form .inputBox input::placeholder{
    color: #fff;
    padding:10px;

}


.forget{
    margin-top: 5px;
    color: #fff;
}
.forget a{
    color: #fff;
    font-weight: 600;

}
.H3{
    /* background-color: #008979; */
    width: 100%;
    height: 400px;
}
.Header .H3 .TV2{
    /* width: 1300px; */
    margin: 0px auto;
    /* background-color: #496bc0; */
    height: 400px;
}
.tieude{
    margin-left: 5%;
    margin-top: 2%;
}
.tieude button{
    width: 70px;
    height: 30px;
    border-radius: 15px;
    border: 1px solid rgba(255,255,255,0.5);
    background-color:rgba(255, 255, 255, 0.118) ;
    color: #fff;

}
.tieude p{
    color: #fff;
    font-size: 2rem;
    margin-top: 1%;
}
.TV2 .noidung{
    width: 1050px;
    min-height: 250px;
    background: rgba(255, 255, 255, 0.232);
    border-radius: 10px;
    justify-content: center;
    align-items: center;
    backdrop-filter:blur(5px) ;
    box-shadow: 0 25px 45px rgba(0,0,0,0.1);
    /* border: 1px solid rgba(104, 102, 102, 0.612);
    border-right: 1px solid rgba(255,255,255,0.2);
    border-bottom: 1px solid rgba(109, 101, 101, 0.533); */
    margin-top: 2%;
    margin-left: 5%;
    box-shadow: 0 0 1rem #12f7ff;
}
.noidung  .td{
    color: #fffbfb;
    font-size: 25px;
    padding-top: 10px;
    /* color: #333; */
}
.noidung p{
    color: #fff;
    margin-left: 15px;
    
}
.H4{
    width: 100%;
    height: 300px;
    /* background-color: bisque; */
}
.H4 .TV3{
    width: 1000px;
    margin: 0px auto;
    /* background-color: #496bc0; */
    height: 300px;
}
.H4 .TV3 h1{
    font-size: 48px;
    text-align: center;
    color: #fff;
    margin-top: 10%;
}
.H4 .TV3 button{
    background-color: #003056;
    color: #fff;
    padding: 0.8em 1.6em;
    border-radius: 7px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
    box-shadow: 0 0 1rem #12f7ff;
    font-weight: 700;
    /* width: 190px; */
    height: 55px;
    margin-left: 40%;
    margin-top: 3%;
    font-size: 19px;
    display: flex;
}
.H4 .TV3 button a{
    text-decoration: none;
    color: #ffff;
}
.H4 .TV3 button:hover {
    background-color: #086bbb;
}
.H4 .TV3 button i{
    margin-left: 10px;
}
.Footer{
    background: linear-gradient(#276F78,#003366);
    width: 100%;
    text-align: center;
    padding: 10px 0;
    color: #fff;
    padding-bottom: 41px;
    position: relative;
    overflow: hidden;

}
.Footer h1{
    font-weight:bolder;
    font-size: 2.8em;
    font-family:'Tahoma';
   
}
.Footer h4{
    font-weight: lighter;
    font-size: 1.5em;
    font-family: Verdana;
    margin-top: 10px;
}
.Footer div{
    margin-top: 30px;
    font-weight: lighter;
    font-size: 1em;
    font-family: Verdana;
    
    
}
.Footer div ul{
    display: flex;
    list-style: none;
    justify-content: space-between;
    margin-left: 100px;
    margin-right: 100px;

}
.Footer div ul li h3{
    padding: 10px;
    
}
.Footer  div  button {
    border:10px;
    padding: 10px 15px;
    font: 1.4em sans-serif;
    /* margin-top: 10px; */
    background-color: rgba(0,0, 0, 0.5);
    color: #fff;
    /* margin-left: 10px; */
    border-radius: 5px;
    margin-right: 20px;
    
}
.Footer  div  button a{
    text-decoration: none;
    color: #fff;
}
.Footer  div  button a:hover{
    color: #00B0CC;

}
.flex{
    display: flex;
    justify-content: flex-start;
    z-index: 4;

}
#animation{
    width: 30%;
    z-index: 4;
}
#animation img{
    width: 150%;
    animation: nudge 5s linear infinite alternate;
    animation-direction: alternate;
}
.Info{
    width: 70%;
    margin: 0;
    z-index: 4;
}
.Info ul div li {
   text-align: left;
   margin-top: 20px;
  
}
.text2 :hover{
    color: #00B0CC;
}
.text2 a:hover{
    color: #00B0CC;
}

.Info ul div li a{
    text-decoration: none;
    color: #fff;
}

.text{
    font-size: 1.8rem;
}
@keyframes nudge{
    0%,100%{
        transform: translateY(0);
    }
    50%{
        transform: translateY(50px);
    }
}
  #stars-container {
    position: relative;

  }
  .snowflake {
    position: absolute;
    width: 100%;
    height: 100px;
    background-image: url('image_gioithieu/SPIT\ FRONT-\ END\ \(2\).png');
    background-size: 30px 30px;
    background-repeat: no-repeat;
    animation: snowfall 15s infinite;
    z-index: 1;

    top:0;
    left:0
  }
  
  @keyframes snowfall {
    0% {
      transform: translateY(0);
    }
    100% {
      transform: translateY(300px);
    }
  }

  @media(max-width:1199px){
    #backtop {
        right: 50px;
      }
    /* .Header{
        width: 100%;
     } */
    .snowflake{
        width: 50%;
    }
    .Header .H1 nav{
        width: 85%;
    }
    .Header .H1 nav .home{
        width: 10%;
        font-size: 25px;
    }
    .Header .H1 nav .home a{
        font-size: 25px;
    }
    .Header .H1 nav  .apply a button{
            width: 200px;
            height: 70px;
            font-size: 20px;
    }
    .Header .H2 .TV1{
        /* display: block; */
        width: 100%;
    }
  
    .Header .H2 .TV1 .box .square{
            width: 100px;
            height: 100px;
        }
    .astronaut img{
        width: 100%;
        height: 500px;
        margin-top: 200px;
        object-fit: cover;
    } 
    
   
    .Header .H3 .TV2 .tieude{
        margin-left: 100px;
    }
    .Header .H3 .TV2 .noidung{
        width: 900px;
        height: 300px;
    }
    
    .Header .H4 .TV3 h1{
        font-size: 30px;
        /* margin-top: 150px;
        width: 85%;
        margin-left: 25px;
        padding-top: 10px; */
       
    }
    .Footer div ul{
        display: block;
        margin-left: 50px;
         margin-right: 50px;
    }
    .Info{
        display: block;
        width: 100%;
    }
    .flex{
        float: left;
        margin-bottom: 10px;
    }
    #animation{
        width: 100%;
    }
    #animation img{
        width: 110%;
        animation: nudge 5s linear infinite alternate;
        animation-direction: alternate;
        margin-left: 20px;
        margin-top: 10px;
        
    }
    .Footer h4{
        font-size: 20px;
    }
    .Footer h1{
        font-size: 25px;
    }
    
}
@media(max-width:991px){
    .Header .H3 .TV2 .noidung{
        width: 700px;
        height: 320px;
    }
    .Header .H4 .TV3{
        width: 100%;
    }
    .Header .H4 .TV3 h1{
        font-size: 20px;
        /* margin-top: 150px;
        width: 85%;
        margin-left: 25px;
        padding-top: 10px; */
       justify-content: center;
    }
    .Header .H4 .TV3 button{
            justify-content: center;
    }

}

  @media(max-width:700px){
    #backtop {
        right: 50px;
      }
      .Header .H1 nav{
        width: 85%;
    }
    .Header .H1 nav .home{
        width: 10%;
        font-size: 25px;
    }
    .Header .H1 nav .home a{
        font-size: 15px;
    }
    .Header .H1 nav  .apply a button{
            width: 120px;
            height: 50px;
            font-size: 13px;
    }
    .Header .H1 nav  .apply{
        width: 100px;
    }
    /* .Header{
        width: 100%;
     } */
    .snowflake{
        width: 50%;
    }
    
 
    .TV1 {
        display: flex;
        flex-direction: column-reverse;
      }
    .Header .H2 .TV1{
        display: block;
        width: 100%;
        height: 1000px;
    }
    .Header .H2 .TV1 .box {
        width: 69%;
    }
    .Header .H2 .TV1 .box .square{
        width: 50px;
        height: 50px;
    }
    .Header .H2 .TV1 .box .container{
        width: 330px;
    }
    .Header .H2 .TV1 .box .container .form{
        width: 90%;
    }
    .Header .H2 .TV1 .box .container .form h2{
        font-size: 20px;
    }
      .Header .H2 .TV1 .box .container .form  .inputBox input{
        padding: 5px 5px;
    }
    .astronaut img{
        width: 100%;
        height: 300px;
        margin-top: 10px;
    }
    
    .Header .H3{
        width: 100%;
        height: 650px;
    }
    .Header .H3 .TV2{
        width: 30%;
        margin-top: 200px;
    }
    .Header .H3 .TV2 .tieude{
        margin-left: -100px;
        width: 350px;
    }
    .Header .H3 .TV2 .tieude p{
        font-size: 20px;
        width: 100%;
        margin-bottom: 10px;
    }
    .Header .H3 .TV2 .noidung{
        width: 300px;
        margin-left: -100px;
        height: 620px;
    }
    .Header .H3 .TV2 .noidung .td{
            font-size: 17px;
    }
    .Header .H4{
        margin-top: -90px;
        margin-bottom: 500px;
    }
    .Header .H4 .TV3{
        /* margin-top: 140px; */
        width: 100%;
        height: 150px;
        
    }
    .Header .H4 .TV3 h1{
            font-size: 20px;
            margin-top: 150px;
            width: 85%;
            margin-left: 25px;
            padding-top: 10px;
           
    }
    .Header .H4 .TV3 button{    
        margin-left: 30%;
        height: 40px;
        font-size: 15px;

    }
    .Footer {
        margin-top: 280px;
    }
    .Footer div ul{
        display: block;
        margin-left: 50px;
         margin-right: 50px;
    }
    .Info{
        display: block;
        width: 100%;
    }
    .flex{
        float: left;
        margin-bottom: 10px;
    }
    .flex{
        display: block;
    }
    #animation{
        width: 100%;
    }
    #animation img{
        width: 110%;
        animation: nudge 5s linear infinite alternate;
        animation-direction: alternate;
        margin-left: 20px;
        margin-top: 10px;
        
    }
    .Footer h4{
        font-size: 20px;
    }
    .Footer h1{
        font-size: 25px;
    }
    
}