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

/* 主体 */
.container {
    width: 100vw;
    height: 100vh;
    background: url('../image/home-bg@2x.png') no-repeat;
    background-size: 100% 100%;
    position: relative;
}

/* 导航栏 */
nav {
    width: 100%;
    box-sizing: border-box;
    padding: 50px 120px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* LOGO */
.gw_infomation {
    display: flex;
    align-items: center;
}

.logo {
    width: 180px;
    height: 32px;
    background: url('../image/nasa-logo@2x.png');
    background-size: 100% 100%;
    margin-left: 50px;
}

/* 路由 */
.app-link {
    display: flex;
    align-items: center;
    gap: 50px;
}

.app-link a {
    position: relative;
    height: 30px;
    padding: 5px 0;
    font-family: PingFang SC, PingFang SC;
    font-weight: 400;
    font-size: 32px;
    color: #7D8092;
    line-height: 30px;
    font-style: normal;
    text-decoration: none;
    transition: color 0.3s ease;
}

.app-link a.active {
    font-weight: bold;
    font-size: 36px;
    color: #1E2531;
}

.app-link a.active::after {
    content: "";
    position: absolute;
    bottom: -25px;
    /* 控制短横线与文本的距离 */
    left: 50%;
    transform: translateX(-50%);
    width: 41px;
    height: 7px;
    background: #1E2531;
}

/* 谷歌、苹果下载区 */
.app-qd {
    width: 350px;
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 60%;
    left: 10%;
}

.qd-link {
    width: 325px;
    height: 94px;
    display: flex;
    align-items: center;
    margin-bottom: 50px;
    border-radius: 20px;
    justify-content: center;
}

.qd-link a {
    text-decoration: none;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.apple-bg {
    background: #1E2531;
}

.google-bg {
    background: #FFFFFF;
}

.qd-img {
    width: 56px;
    height: 56px;
}

.qd-text {
    width: 210px;
    height: 43px;
    font-family: Galano Grotesque Alt DEMO, Galano Grotesque Alt DEMO;
    font-weight: bold;
    font-size: 32px;
    color: #FFFFFF;
    line-height: 38px;
    text-align: right;
}

.google-text {
    color: #1E2531;
}

.apple-icon {
    background: url('../image/apple.png');
    background-size: 100% 100%;
}

.google-icon {
    background: url('../image/google.png');
    background-size: 100% 100%;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        background: url('../image/mobile-bg.png') no-repeat;
        background-size: 100% 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    nav {
        height: 2rem;
        padding: 2rem;
    }


    .gw_infomation {
        width: 6rem;
        justify-content: flex-start;
    }


    .logo {
        margin-left: 0.5rem;
        width: 15rem;
        height: 1rem;
    }


    .app-link {
        width: calc(100% - 6rem);
        justify-content: flex-end;
        gap: 1rem;
    }

    .app-link a {
        font-size: 0.75rem;
        height: auto;
    }

    .app-link a.active {
        font-size: 0.75rem;
    }

    .app-link a.active::after {
        width: 1.2rem;
        height: 0.15rem;
        bottom: 0.5rem;
    }

    /* 谷歌、苹果下载区 */
    .app-qd {
        width: 100%;
        box-sizing: border-box;
        position: static;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-top: 2rem;
    }

    .qd-link {
        width: 80%;
        height: 3rem;
        margin-bottom: 1rem;
        border-radius: 1rem;
        align-items: center;
    }


    .qd-img {
        width: 2rem;
        height: 2rem;
    }

    .qd-text {
        width: auto;
        height: auto;
        margin-left: 0.5rem;
        font-size: 0.8rem;
    }

    .banner {
        width: 75%;
        height: 35rem;
         background: url('../image/phone@2x.png') no-repeat;
        background-size: 100% 100%;
        position: relative;
    }

    .bannerview {
        position: absolute;
        background-size: cover;
        background-position: center;
    }

    .heart{
        width: 7rem;
        height: 7rem;
        background: url('../image/king.png') no-repeat;
        background-size: cover;
        right: -4rem;
        top: 1.5rem;

    }

    .emoji{
        width: 10rem;
        height: 10rem;
        background: url('../image/emoji.png') no-repeat;
        background-size: cover;
        right: -2rem;
        bottom: -1.8rem;
    }

    .bubble{
        width: 5rem;
        height: 5rem;
        background: url('../image/bubble.png') no-repeat;
        background-size: cover;
        left: -3rem;
        bottom:4rem;
    }


}