    /* //////手機排版////// */
@media (max-width: 800px) {
    body {
        background-color: #ffffff;
        font-family: Arial, sans-serif;
        line-height: 1.6;
        margin: 0;
        padding: 0;
        color: #333;
        background-image: url('picture/Application/backgroung.png');
        background-repeat: no-repeat;
        background-size: 100vw 100vh;
        background-attachment: scroll;
        background-position: center top;
        background-attachment: fixed;
    }
    /* //////頂部區域////// */
  header {
    position: fixed;
    background: linear-gradient(to right, #9e9d77f0, #2b3e57f0);
    width: 100%;
    height: 15vh;
    z-index: 1000;
    color: white;
  }
  .header-container {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between; 
  }
  .header-logo {
    display: flex;
    align-items: center;
    justify-content: space-evenly; 
    min-width: 20%;
    height: auto;
    margin: 0 0;
    padding: 0 0;
  }
  .header-img {
    width: 130px;
    height: 100%;
    display: block;
    pointer-events: auto;
    user-select: none;
  }
  .menu-toggle {
    all: unset;
    color: #ffffff;
    display: block;
    font-size: 30px;
    font-weight: 1000;
  }
  .header-links {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease;
    background-color: #e7e7e7;
    position: absolute;
    width: 100%;
    top: 100%;
    left: 0;
    z-index: 1000;
  }
  .header-links.active1 {
    max-height: 802px;
  }
  .header-links a {
    display: flex;
    align-items: center;
    justify-content: left; 
    color: rgb(20, 58, 59);
    text-decoration: none;
    width: 80%;
    padding: 0 10px;
    margin: 0 0;
    font-size: 20px;
    font-weight: 500;
    height: 50px;
  }
  .header-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    justify-content: left; 
    width: auto;
    height: 35%;
    margin: 0 0;
    padding: 0 0;
  }
  .header-menu-line {
    background-color: #272727;
    width: 100%;
    height: 3px;
    margin: 0 0;
    padding: 0 0;
  }
  .header-menu-item-dropdown {
    position: relative;
    width: 80%;
    padding: 0 0;
    margin: 0 0;
    font-size: 20px;
    font-weight: 1000;
    height: 50px;
  }
  .header-menu-item-dropdown a {
    color: rgb(20, 58, 59);
    width: 100%;
    padding: 0 10px;
    margin: 0 0;
    font-size: 20px;
    font-weight: 500;
    height: 50px;
  }
  .product-toggle {
    all: unset;
    background-color: #ffffff00;
    color: rgb(20, 58, 59);
    display: flex;
    align-items: center;
    justify-content: center; 
    position: absolute;
    top: 0;
    right: -70px;
    width: 20%;
    height: 50px;
    padding: 0 0px;
    margin: 0 0;
    font-size: 30px;
    font-weight: 300;
  }
  .header-dropdown-menu{
    height: 0;
    overflow: hidden;
    transition: height 0.5s ease;
    flex-direction: column;
    justify-content: left;
    position: absolute;
    left: 20px;
    width: 100%;
    padding: 0 20px;
    margin: 0 0;
    list-style: none;
    z-index: 1000;
  }
  .header-dropdown-menu.active2 {
    height: 190px;
  }
  .header-menu-space {
    height: 0;
    overflow: hidden;
    transition: height 0.5s ease;
    width: 100%;
    margin: 0 0;
    padding: 0 0;
  }
  .header-menu-space.active2 {
    height: 190px;
  }
  .header-menu-item.dropdown,.header-dropdown-menu {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
  }
  .header-item-image {
    color: #ffffff;
    width: 200px;
    height: auto;
    margin: 0px 0px;
    padding: 2px 0px;
    border-radius: 10px;
    font-size: 25px;
  }
  .header-item-image a {
    display: flex;
    align-items: center;
    justify-content: left;
    text-decoration: none;
    color: rgb(20, 58, 59);
    width: 200px;
    height: auto;
    margin: 0px 0px;
    padding: 10px 0px;
    border-radius: 10px;
    font-size: 25px;
  }
  .header-hover-image {
    display: none;
  }
  .lang-toggle {
    position: relative;
    width: 100px;
    height: 35%;
    background-color: #837762;
    border-radius: 100px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0;
    margin: 0 3vw;
    font-family: sans-serif;
    cursor: pointer;
    user-select: none;
    transition: background-color 0.3s;
  }
  .lang-toggle .toggle-btn {
    position: absolute;
    width: 55%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.4);
    border-radius: 100px;
    transition: transform 0.3s;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.603);
    transform: translateX(0%);
  }
  .lang-toggle span {
    font-size: 15px;
    font-weight: 300;
    z-index: 1;
    width: 50%;
    text-align: center;
    font-weight: bold;
  }
  .lang-toggle.active .toggle-btn {
    transform: translateX(80%);
  }
  
    /* //////位置按鈕////// */
    .buttom-area {
        display: flex;
        flex-direction: column;
        align-items: end;
        justify-content: center;
        position: fixed;
        right: 0;
        bottom: 1vw;
        width: 15%;
        height: 15vw;
        z-index: 1000;
    }
    .buttom-area-small {
        background-color: #fff27ec7;
        display: flex;
        align-items: center;
        justify-content: center;
        width: 100%;
        height: 5vw;
        margin: 0.2vw 0;
        font-size: 1.5vw;
        font-weight: 700;
        cursor: pointer;
        color: #1b1b1b;
        padding: 0 0;
        clip-path: polygon(10% 0, 100% 0, 100% 100%, 10% 100%, 0 50%);
        transition: all 0.3s ease;
    }
    .buttom-area-small:hover{
        width: 110%;
        background-color: #fff27e;
    }

    /* //////中部區域1_開場圖片////// */
    .opening {
        position: relative;
        width: 100%;
        height: 70vw;
        overflow: hidden;
    }
    .opening-img {
        position: absolute;
        top: 0%;
        left: 0%;
        width: 100%;
        height: 50vw;
    }
    .opening-img img {
        width: 100%;
        height: 70vw;
    }
    .opening-text {
        background-color: #e6e6e6c7;
        display: flex;
        flex-direction: column;
        align-items: center;
        position: absolute;
        top: 55%;
        left: 0%;
        width: 100%;
        height: 10vw;
    }
    .opening-text h1 {
        color: #000000;
        position: relative;
        top: -1vw;
        font-size: 3vw;
        font-weight: 700;
    }
    .opening-text h2 {
        color: #000000;
        position: relative;
        top: -4vw;
        font-size: 1.5vw;
        font-weight: 500;
    }
    .area {
        background-color: rgb(255, 251, 239);
        display: flex;
        justify-content: center;
        position: relative;
        margin-top: -34vw;
        left: 0;
        width: 100%;
        height: 35vw;
        clip-path: polygon(0 80%, 50% 100%, 100% 80%, 100% 100%, 50% 100%, 0 100%);
    }

    /* //////中部區域2_智慧基礎建設、中部區域3_智慧移動、中部區域4_智慧3D感知////// */
    .AI-build {
        display: flex;
        justify-content: center;
        background-color: rgb(230, 230, 230);
        position: relative;
        width: 100%;
        height: 35vw;
        border-radius: 5vw;
    }
    .AI-build h1 {
        background-color: rgb(255, 217, 102);
        display: flex;
        justify-content: center;
        align-items: center;
        position: absolute;
        top: -4vw;
        width: 20%;
        font-size: 2.5vw;
        font-weight: 500;
        color: #000000;
    }
    .AI-build h2 {
        position: absolute;
        top: 3vw;
        width: 50%;
        font-size: 1.5vw;
        font-weight: 400;
        color: #000000;
    }
    .AI-build-buttomarea {
        display: flex;
        justify-content: space-around;
        position: absolute;
        bottom: 5vw;
        width: 100%;
        height: 15vw;
    }
    .AI-build-buttom {
        background-color: rgb(151, 151, 151);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        width: 15%;
        height: 12vw;
        cursor: pointer;
        transition: all 0.3s ease;
    }
    .AI-build-buttom:hover {
        width: 17%;
        height: 14vw;
    }
    .AI-build-buttom img {
        width: 80%;
        height: 10vw;
    }
    .AI-build-buttom h1 {
        background-color: rgb(255, 217, 102);
        position: absolute;
        top: 11vw;
        width: 15%;
        height: 3vw;
        border-radius: 0.2vw;
        font-size: 1.5vw;
        font-weight: 500;
        transition: all 0.3s ease;
    }
    .AI-build-buttom:hover h1{
        width: 17%;
        top: 12vw;   
    }
    .build-left {
        position: relative;
        width: 100%;
        height: 50vw;
    }
    .build-left-title {
        background-color: rgb(34, 34, 34);
        position: absolute;
        top: 22vw;
        width: 50%;
        height: 0.2vw;
    }
    .build-left-title h1 {
        position: absolute;
        top: -13vw;
        left: 5vw;
        font-size: 3vw;
        font-weight: 700;
    }
    .build-left-title h2 {
        position: absolute;
        top: -4vw;
        left: 1vw;
        width: 80%;
        font-size: 1.5vw;
        font-weight: 500;
    }
    .build-left-content {
        position: absolute;
        top: 22vw;
        width: 100%;
        height: 35vw;
    }
    .build-left-content h1 {
        position: absolute;
        top: 5vw;
        left: 5vw;
        width: 40%;
        font-size: 2vw;
        font-weight: 700;
    }
    .build-left-content h2 {
        position: absolute;
        top: 15vw;
        left: 5vw;
        width: 40%;
        font-size: 1.5vw;
        font-weight: 500;
    }
    .build-left-content img {
        position: absolute;
        top: -8vw;
        right: 0vw;
        width: 50%;
        height: auto;
    }
    .build-right {
        position: relative;
        width: 100%;
        height: 50vw;
    }
    .build-right-title {
        background-color: rgb(34, 34, 34);
        position: absolute;
        top: 22vw;
        right: 0;
        width: 50%;
        height: 0.2vw;
    }
    .build-right-title h1 {
        position: absolute;
        top: -13vw;
        right: 5vw;
        font-size: 3vw;
        font-weight: 700;
    }
    .build-right-title h2 {
        display: flex;
        justify-content: end;
        position: absolute;
        top: -4vw;
        right: 1vw;
        width: 75%;
        font-size: 1.5vw;
        font-weight: 500;
    }
    .build-right-content {
        position: absolute;
        top: 22vw;
        width: 100%;
        height: 35vw;
    }
    .build-right-content h1 {
        position: absolute;
        top: 5vw;
        right: 5vw;
        width: 40%;
        font-size: 2vw;
        font-weight: 700;
    }
    .build-right-content h2 {
        position: absolute;
        top: 15vw;
        right: 5vw;
        width: 40%;
        font-size: 1.5vw;
        font-weight: 500;
    }
    .build-right-content img {
        position: absolute;
        top: -8vw;
        left: 0vw;
        width: 50%;
        height: auto;
    }
    .space {
        width: 100%;
        height: 20vw;
    }

    /* //////底部區域////// */
    footer {
        position: relative;
        background: linear-gradient(to right, #2b3e57f0, #9e9d77f0);
        padding: 20vh 5vw;
    }
    .footer-menu {
        position: absolute;
        top: 15%;
        left: 0%;
        width: 100%;
        height: auto;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .footer-links a {
        color: #ffffff;
        text-decoration: none;
        font-size: 3vw;
        font-weight: 700;
        padding: 0 1vw;
        position: relative;
    }
    .footer-vertical-line {
        background-color: #bcbcbc;
        display: flex;
        align-items: center;
        justify-content: center;
        position: absolute;
        top: 0%;
        left: 96%;
        width: 2%;
        height: 100%;
        z-index: 20;
    }
    .footer-horizontal-line {
        background-color: #bcbcbc;
        display: flex;
        align-items: center;
        justify-content: center;
        position: absolute;
        top: 30%;
        width: 80%;
        height: 1%;
        left: 10%
    }
    .footer-container {
        margin-top: 5%;
        margin-left: 10%;
        font-size: 3vw;
        font-weight: 200;
        color: #ffffff;
    }
    .footer-copyright {
        position: absolute;
        top: 90%;
        left: 20%;
        font-size: 1vw;
        color: #959595;
    }
    .footer-logo {
        position: absolute;
        top: 70%;
        left: 40%; 
    }
    .footer-img {
        width: 50%;
        height: auto;
    }
}
