* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'SIMSUNB', sans-serif;
    
    color: white;
    background: rgba(0, 0, 0, 0.7);
    padding: 20px;
    line-height: 1.6;
    font-size: 1.1em;
    text-align: center;
}

.video-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    
}

#background-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}


.audio-control {

   display: inline-block;


}

#audio-toggle {
    background: rgba(0, 0, 0, 0.6);
    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    margin-top: 2rem;
    margin-bottom: 0rem;
    width: 80px;
    height: 80px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

#audio-toggle:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: scale(1.1);
}

.audio-icon {
    font-size: 2em;
}


h2  {
    font-size: 2em;
    margin: 1em 0 1em;
    text-align: center;
}



h1 {
    font-family: 'SIMSUNB', sans-serif;

    font-size: 40rem;
   
    text-align: center;
    color:rgba(255, 255, 255, 1) ;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

a {
    color: rgba(255, 255, 255, 1);
    text-decoration: none;  
    font-weight: bold;
    font-size: 20rem;
    font-family: 'SIMSUNB', sans-serif;
}

p {
    margin: 1em 0;
    text-align: justify;
}




.Ft { 
    display: flex;
    flex-direction: column;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
   opacity: 0.8;
    border-radius: 10px;
    backdrop-filter: blur(5px);
    transform-origin: 0% 100%;
    transform: translateY(-20px);
    transition: transform 0.5s ease-in-out;
}

#SIGNATURE {
    width: 200px;
    height: 200px;
    background-color: white;
    align-self: center;
    border-radius: 50%;
}

.footer {
    
    width: 100%;
    
    background: rgba(0, 0, 0, 0.8);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1;
}

.footer-content {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-aone {
    width: 30px;
    height: 30px;
    border-radius: 50%;
}

.logo-hao {
    width: 30px;
    height: 30px;
    border-radius: 50%;
}   

.cc-icon {
    width: 20px;
    height: 20px;
}

.close {

margin-left: 75%;



}



  /* Responsive Mobile */
@media (max-width: 480px) {
    body {
        padding: 15px;
        font-size: 1.3em;
        line-height: 1.5;
    }

 
    h2 {
        font-size: 0.9em;
        margin: 0.5rem;
        text-align: justify;
        width: 100%;
        padding: 0;
        line-height: 1.6;
    }

    h1 {
        position: relative;
    
        font-size: 8rem;
    }

    a {
        font-size: 8rem;
    }

   .audio-control {
        
        z-index: 2;
        margin-top: -1.5rem;
        margin-bottom: 0.5rem;
    }

    #audio-toggle {
        width: 70px;
        height: 70px;
    }

    .audio-icon {
        font-size: 2.5em;
    }

    .close {
        margin-left: 0;
        width: 100%;
        text-align: center;
    }

    #SIGNATURE {
        width: 120px;
        height: 120px;
    }

    .footer {
        flex-direction: column;
        gap: 10px;
        padding: 15px 10px;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}