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


html,
body {
    width: 100%;
    min-height: 100%;
}

body {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

.banner {
    width: 100%;
    min-height: 0;
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: url(../images/top_banner.png) center center / cover no-repeat;
    padding: clamp(64px, 10vh, 108px) 24px clamp(28px, 4vh, 44px);
}

.banner .logo {
    display: block;
    width: min(35.68vw, 685px);
    min-width: 430px;
    height: auto;
}

.link-btn {
    width: min(480px, 42vw);
    min-height: 60px;
    margin-top: auto;
    padding: 12px 24px;
    border-radius: 10px;
    background-color: #f5d522;
    color: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
    line-height: 1.2;
    text-align: center;
    text-decoration: none;
}

.bottom {
    width: 100%;
    flex: 0 0 clamp(188px, 20vh, 216px);
    background-color: #03b0fd;
    padding: clamp(22px, 3.25vh, 35px) 20px 20px;
}

.bottom .font {
    width: 100%;
    color: #fff;
    font-size: 20px;
    font-weight: bold;
    line-height: 1.2;
    text-align: center;
}

.platform-list-box {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.platform-list-box .platform-list {
    width: clamp(160px, 10.42vw, 200px);
    height: clamp(84px, 10vh, 108px);
    background-color: #000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.platform-list-box .platform-list img {
    display: block;
    max-height: 52%;
    object-fit: contain;
}

/* 不同品牌 Logo 比例不同，分别校准视觉大小 */
.platform-list-box .platform-list:nth-child(1) img {
    width: 62%;
}

.platform-list-box .platform-list:nth-child(2) img {
    width: 50%;
}

.platform-list-box .platform-list:nth-child(3) img {
    width: 70%;
}

.platform-list-box .platform-list:nth-child(4) img {
    width: 32%;
}



@media (min-width: 1441px) and (min-height: 801px) {

    .banner {
        padding-top: clamp(180px, 20vh, 220px);
    }
}


@media (min-width: 769px) and (max-width: 1440px) {
    .banner {
        padding-top: clamp(48px, 8vh, 72px);
        padding-bottom: clamp(24px, 3.5vh, 34px);
    }

    .banner .logo {
        width: clamp(430px, 38vw, 548px);
    }

    .banner .link-btn {
        width: clamp(380px, 36vw, 460px);
        min-height: 54px;
        font-size: 18px;
    }
}


@media (min-width: 769px) and (max-height: 800px) {
    .banner {
        padding-top: 30px;
        padding-bottom: 22px;
    }

    .banner .logo {
        width: clamp(380px, 34vw, 500px);
        min-width: 380px;
    }

    .banner .link-btn {
        min-height: 50px;
        font-size: 17px;
    }

    .bottom {
        flex-basis: 168px;
        padding-top: 18px;
    }

    .platform-list-box {
        margin-top: 14px;
    }

    .platform-list-box .platform-list {
        height: 82px;
    }
}

@media (min-width: 769px) and (max-height: 650px) {
    .banner {
        padding-top: 20px;
        padding-bottom: 16px;
    }

    .banner .logo {
        width: 340px;
        min-width: 340px;
    }

    .banner .link-btn {
        min-height: 44px;
        font-size: 16px;
    }

    .bottom {
        flex-basis: 140px;
        padding-top: 12px;
    }

    .bottom .font {
        font-size: 17px;
    }

    .platform-list-box {
        margin-top: 10px;
    }

    .platform-list-box .platform-list {
        height: 68px;
    }
}


.link-btn.mobile-show {
    display: none;
}

/* 手机端适配 */
@media (max-width: 768px) {
    .bottom {
        padding-top: 3vw;

    }
    .banner .logo {
        width: 68vw;
        min-width: 68vw;
    }

    .link-btn.mobile-show {
        display: flex !important;
    }

    .link-btn.pc-show {
        display: none !important;
    }

    .link-btn {
        width: 70vw;
        margin: 0 auto;
        margin-bottom: 5vw;
    }

    .bottom .font {
        font-size: 3.5vw;
    }

    .banner {
        padding-top: 30vw;
        background: url(../images/mobile-banner.png) center center / cover no-repeat;
    }

    .platform-list-box {
        margin-bottom: 9vw;
    }

    .platform-list-box .platform-list {
        width: 23vw;
        height: 12.5vw;
        margin: 0.5vw;
    }

   
}