@media screen and (min-width: 700px) and (max-width: 900px) {
    /* 平板 */
    .titlepage_card {
        height: 620px;
        margin-bottom: calc(100% - 600px);
    }
    .titlepage_card:nth-child(1) {
        margin-top: 50%;
    }
    .nav {
        right: calc(5.5%);
    }
    .nav div {
        width: 6px;
        height: 30px;
        margin: 28px 0px;
    }
    .nav_s_btn,
    .nav_p_btn,
    .nav_t_btn {
        width: 65px;
        height: 65px;
        position: absolute;
        left: 50%;
        transform: translate(-50%, 0) rotate(0deg);
        z-index: 2;
        transition: all 0.25s cubic-bezier(0.29, 0.13, 0.33, 1);
        box-shadow: #00000045 0px 2px 20px 0;
        border-radius: 50px;
        background: #fff;
    }
    .nav_s_btn,
    .nav_t_btn {
        top: 10px;
    }
    .nav_p_btn {
        bottom: 10px;
    }
    .nav_s_btn:hover,
    .nav_p_btn:hover,
    .nav_t_btn:hover {
        background: rgb(203, 204, 209);
        cursor: pointer;
    }
    .nav_s_btn:active,
    .nav_p_btn:active,
    .nav_t_btn:active {
        color: white;
        background: rgb(0, 0, 0);
        transition: all 0s;
    }
    .nav_s_btn a,
    .nav_p_btn a,
    .nav_t_btn a {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }
    .nav_s_btn a:hover,
    .nav_p_btn a:hover,
    .nav_t_btn a:hover {
        cursor: pointer;
    }
    .epilogue_title {
        position: absolute;
        top: 110px;
        left: 50%;
        transform: translate(-50%, 0);
        display: inline-block;
        text-align: center;
        /* margin-top: 3%; */
    }
}

@media screen and (min-width: 0px) and (max-width: 700px) {
    /* 手机 */
    .titlepage_card {
        height: 560px;
        margin-bottom: calc(50% - 150px);
    }
    .titlepage_card:nth-child(1) {
        margin-top: 40%;
    }
    .nav {
        right: calc(2%);
    }
    .nav div {
        width: 3.5px;
        height: 22px;
        margin: 15px 0px;
    }
    .nav_s_btn,
    .nav_p_btn,
    .nav_t_btn {
        position: absolute;
        z-index: 2;
        transition: all 0.25s cubic-bezier(0.29, 0.13, 0.33, 1);
        left: 50%;
        background: transparent;
        font-size: 16px;
        vertical-align: top;
        color: rgb(255, 255, 255);
    }
    .nav_t_btn {
        width: 100%;
        height: 55px;
        top: 0px;
        border-radius: 15px;
        transform: translate(-50%, 0) rotate(0deg);
    }
    .nav_s_btn {
        width: 100%;
        height: 55px;
        top: 0px;
        /* border-radius: 0 0 15px 15px; */
        box-shadow: #00000030 0px 2px 40px 0;
        transform: translate(-50%, 0) rotate(0deg);
    }
    .nav_p_btn {
        width: 100%;
        height: 60px;
        bottom: 0px;
        transform: translate(-50%, 0) rotate(0deg);
        box-shadow: #00000030 0px 2px 40px 0;
        /* border-radius: 15px 15px 0 0; */
    }
    .nav_s_btn a,
    .nav_p_btn a,
    .nav_t_btn a {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }
    .nav_s_btn a:hover,
    .nav_p_btn a:hover,
    .nav_t_btn a:hover {
        cursor: pointer;
    }
    .epilogue_title {
        position: absolute;
        top: 80px;
        left: 50%;
        transform: translate(-50%, 0);
        display: inline-block;
        text-align: center;
        /* margin-top: 3%; */
    }
}

@media screen and (min-width: 0px) and (max-width: 900px) {
    /* 通用 */
    body {
        margin: 0px;
        padding: 0px;
        background-color: #000000;
    }
    input[type="button"] {
        font-size: 14px;
    }
     ::-webkit-scrollbar {
        height: 0px;
        /*对水平流动条有效   height*/
        /* background: #0c0c0c; */
    }
    /*定义滑块颜色、内阴影及圆角*/
     ::-webkit-scrollbar-thumb {
        border-radius: 1010px;
        background-color: #000000;
        border: solid #ffffff 5px;
        /* padding: 10px; */
        /* margin: 10px; */
    }
    /*定义两端按钮的样式*/
     ::-webkit-scrollbar-button {
        width: 0px;
    }
    /* ::-webkit-scrollbar-thumb:window-inactive {
		background:#ff9ba2;
	} */
    .cover_icon {
        position: absolute;
        left: 50%;
        bottom: 5%;
        transform: translate(0, -50%) rotate(180deg);
        text-align: center;
        font-size: 18px;
        line-height: 50px;
        letter-spacing: -0.5px;
        font-family: "font-b" !important;
        transition: all 0.5s;
        /* animation: loop 3s infinite; */
    }
    @keyframes loop {
        0% {
            transform: translate( -50%, 0%) scale(1);
            opacity: 1;
        }
        49% {
            transform: translate( -50%, 15%) scale(1);
            opacity: 0;
        }
        51% {
            transform: translate( -50%, -15%) scale(1);
            opacity: 0;
        }
        100% {
            transform: translate( -50%, 0%) scale(1);
            opacity: 1;
        }
    }
    .cover p {
        display: inline-block;
        font-weight: 300;
        font-size: 26px;
        letter-spacing: -1px;
        color: var(--text_color_p);
        white-space: nowrap;
    }
    .cover a {
        font-size: 12px;
        font-weight: 600;
        color: var(--text_color_a);
    }
    .cover_icon:hover {
        cursor: pointer;
        transform: scale(1.5) rotate(180deg);
    }
    /* ------------------------------------------------ */
    .titlepage_container {
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translate(-50%, 0%);
        width: 100%;
        height: 100%;
        scroll-snap-type: y mandatory;
        scroll-behavior: smooth;
        overflow: hidden;
    }
    .img {
        position: relative;
        height: 95%;
        top: 49%;
        background: url(img/3.jpg);
        margin-left: 2%;
        margin-right: 1%;
        transform: translate(0, -50%);
        border-radius: 20px 20px 20px 20px;
    }
    .nav {
        font-size: 8px;
        position: absolute;
        top: 50%;
        transform: translate(0%, -50%);
        border-radius: 10px;
        z-index: 3;
        white-space: nowrap;
    }
    .nav div {
        display: block;
        vertical-align: bottom;
    }
    .nav a {
        margin: 0px 5px;
        letter-spacing: -0.6px;
        color: var(--btn_bg);
        text-decoration: none;
    }
    .nav_s_disable,
    .nav_p_disable {
        display: none;
    }
    .nav_s_l,
    .nav_s_r {
        display: none;
    }
    /* ///////////////////////////////////////////////////////// */
    .titlepage_card {
        display: inline-block;
        width: 90%;
        max-width: 460px;
        min-width: 340px;
        position: relative;
        top: 0;
        left: 50%;
        transform: translate(-50%, 0%);
        white-space: nowrap;
        box-sizing: border-box;
        border-radius: 16px;
        scroll-snap-align: center;
        transition: opacity 0.35s ease-in-out;
    }
    .titlepage_card:nth-child(1) {
        background: url(../img/bgs.jpg) no-repeat;
        /* background: white; */
        background-size: 750px;
        background-position: 50% 15%;
        overflow: hidden;
    }
    .titlepage_card:nth-child(1)::before {
        content: "请向下滑动";
        position: absolute;
        top: -60px;
        left: 50%;
        transform: translate(-50%, 0);
        color: rgba(0, 0, 0, 0.145);
        /* box-shadow: #0000001f 0px 2px 2px 0px; */
        z-index: 4;
        /* border-radius: 8px; */
    }
    .titlepage_card:nth-child(2) {
        overflow: hidden;
    }
    .titlepage_card:nth-child(3) {
        background: var(--card_bg);
        overflow: hidden;
    }
    .titlepage_card:nth-child(4) {
        background: var(--card_bg);
        overflow: hidden;
    }
    .titlepage_card:nth-child(5) {
        background: var(--card_bg);
        overflow: hidden;
    }
    .titlepage_card:nth-child(6) {
        background: var(--card_bg);
        overflow: hidden;
    }
    .titlepage_card_end {
        margin-bottom: 50%;
    }
    /* /////////////////////////////////////////////////////////////////// */
    .next_up {
        position: absolute;
        top: 0;
        width: 100%;
        height: 100%;
        text-align: center;
        background: white;
        border-radius: 8px 8px 0 0;
    }
    .next_up p {
        font-weight: 600;
        font-size: 380%;
        font-family: "font-b" !important;
        /* margin-top: 28%; */
        /* margin-bottom: 3%; */
        letter-spacing: -4px;
        color: var(--text_color_p);
        position: absolute;
        top: 180px;
        left: 50%;
        transform: translate(-50%, 0%);
    }
    .next_up a {
        position: absolute;
        top: 260px;
        left: 50%;
        transform: translate(-50%, 0%);
    }
    .next_up_btn {
        display: inline-block;
        position: absolute;
        width: 90%;
        max-width: 400px;
        min-width: 305px;
        height: 60px;
        bottom: 25px;
        left: 50%;
        transform: translate(-50%, 0%);
        background: var(--btn_bg);
        color: var(--btn_text);
        /* box-shadow: white 0 0 0px 10px; */
    }
    .next_up::before {
        content: "";
        width: 100%;
        height: 110px;
        background: #ffffff;
        position: absolute;
        bottom: 0px;
        left: 0%;
        border-radius: 0 0 8px 8px;
    }
    /* /////////////////////////////////////////////////// */
    /* /////////////////////////////////////////////////// */
    /* /////////////////////////////////////////////////// */
    .wit_content {
        position: absolute;
        top: 28%;
        left: 50%;
        margin-right: 2%;
        transform: translate(-50%, -50%);
        text-align: center;
    }
    .wit_content p {
        color: var(--text_color_p);
        font-size: 40px;
        letter-spacing: -2px;
        font-weight: 600;
    }
    .wit_content a {
        color: var(--text_color_a);
        font-size: 120%;
        letter-spacing: -0.5px;
    }
    .wit_btn {
        position: absolute;
        width: 90%;
        max-width: 400px;
        min-width: 305px;
        height: 60px;
        left: 50%;
        bottom: 25px;
        transform: translate(-50%, 0%);
        color: var(--btn_text);
        background: var(--btn_bg);
    }
    .wit_btn:hover {
        background: var(--btn_bg_hover);
    }
    .wit_bg {
        width: 100%;
        height: 100%;
        background: linear-gradient(#fffeb0 0%, #ffafc8 80%, #e3d1ff 100%);
        background-size: 330%;
        overflow: hidden;
    }
    /* ///////////////////////////////////////////////////////////// */
    /* ///////////////////////////////////////////////////////////// */
    /* ///////////////////////////////////////////////////////////// */
    /* ///////////////////////////////////////////////////////////// */
    /* ///////////////////////////////////////////////////////////// */
    .epilogue {
        width: 100%;
        height: 100%;
        transition: opacity 0.3s ease-in-out;
        position: absolute;
    }
    .epilogue_title p {
        font-weight: 600;
        font-size: 28px;
        color: var(--text_color_p);
        margin-top: 10px;
    }
    .epilogue_content {
        display: flex;
        flex-direction: column;
        align-items: center;
        position: absolute;
        bottom: 15px;
        left: 50%;
        width: 100%;
        height: 70%;
        transform: translate(-50%, 0%);
        text-align: center;
        justify-content: flex-end;
    }
    .epilogue_content_bg {
        width: 90%;
        max-width: 450px;
        min-width: 300px;
        height: 80px;
        background: var(--auxiliary);
        margin-bottom: 15px;
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        position: relative;
        color: var(--text_color_p);
    }
    .epilogue_content_bg:hover {
        color: white;
        background: var(--btn_bg);
    }
    .epilogue_content_text {
        display: inherit;
        text-align: left;
        /* text-align: left;
        position: absolute;
        top: 30px;
        left: 30px; */
        margin-left: 30px;
    }
    .epilogue_content_text p {
        font-weight: 600;
        font-size: 18px;
        margin-bottom: -2px;
        margin-right: 16px;
    }
    .epilogue_content_text a {
        color: rgb(130 130 130);
        font-size: 18px;
    }
    .epilogue_content_btn {
        width: 135px;
        height: 40px;
        background: var(--btn_bg);
        color: var(--btn_text);
        margin-right: 5%;
    }
    .epilogue_content_btn:hover {
        background: var(--btn_bg_hover);
    }
    .epilogue_content_text_btn {
        font-size: 12px;
        position: absolute;
        right: 30px;
        line-height: 25px;
    }
    .icon_info {
        color: #000000;
        fill: currentColor;
        display: inline-block;
        width: 30px;
    }
    .bili_btn {
        background: var(--btn_bg);
    }
    .bili_btn:hover {
        background: #00bbff;
    }
    .bili_btn:active {
        background: #0085b5;
    }
    @keyframes ani {
        0% {
            opacity: 1;
        }
        40% {
            opacity: 1;
        }
        41% {
            opacity: 0;
        }
        100% {
            opacity: 0;
        }
    }
    /* ------------------------------------------------ */
    /* ------------------------------------------------ */
    /* ------------------------------------------------ */
    /* ------------------------------------------------ */
    /* ------------------------------------------------ */
    /* ------------------------------------------------ */
    /* ------------------------------------------------ */
    /* ------------------------------------------------ */
    /* ------------------------------------------------ */
    /* ------------------------------------------------ */
    /* ------------------------------------------------ */
    /* ------------------------------------------------ */
    .epilogue_btn {
        position: absolute;
        bottom: 50px;
        left: 50%;
        transform: translate(-50%, 0);
    }
    .epilogue_btn input {
        width: 175px;
        height: 50px;
        font-size: 16px;
    }
    .epilogue_close_btn {
        background-color: #000000;
        color: rgb(255, 255, 255);
        z-index: 2;
        border-radius: 8px;
    }
    .epilogue_close_btn:hover {
        color: white;
        background-color: var(--btn_bg_hover);
    }
    .epilogue_about_btn {
        background: var(--btn_bg);
        color: var(--btn_text);
    }
    .epilogue_about_btn:hover {
        background: var(--btn_bg_hover);
    }
    .epilogue_about {
        width: 100%;
        height: 100%;
        transition: opacity 0.3s ease-in-out;
        position: absolute;
        top: 0px;
        overflow: hidden;
    }
    .epilogue_about_content {
        position: absolute;
        top: 45%;
        left: 50%;
        text-align: center;
        transform: translate(-50%, -50%);
        width: 85%;
        white-space: normal;
    }
    .epilogue_about_content p {
        font-size: 0px;
        font-weight: 700;
        letter-spacing: -2px;
        margin-bottom: 0px;
        opacity: 0;
    }
    .epilogue_about_content a {
        font-size: 18px;
        line-height: 1.85;
        white-space: normal;
    }
    /* ------------------------------------------------ */
    /* ------------------------------------------------ */
    /* ------------------------------------------------ */
    /* ------------------------------------------------ */
    /* ------------------------------------------------ */
    /* ------------------------------------------------ */
    /* ------------------------------------------------ */
    /* ////////////////////////////////////////////////////////////// */
    .x {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }
    .x a {
        font-size: 22px;
    }
    /* ///////////////////////////////////////// */
    .baffle_s {
        display: none;
    }
    .baffle_s_m {
        position: absolute;
        width: 100%;
        height: 100%;
        background: rgb(255, 255, 255);
        z-index: 10;
        text-align: center;
    }
    .s_content {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 100%;
    }
    .baffle_s_m input {
        width: 210px;
        height: 50px;
        background: #000000;
        color: white;
        margin-bottom: 10px;
    }
    #baffle_height_m {
        padding: 1px 5px;
        background: rgb(255, 100, 0);
        border-radius: 5px;
        color: #fff;
    }
    .baffle_s input {
        background: #000000;
        color: white;
        margin-bottom: 10px;
    }
    #baffle_v {
        text-align: center;
        width: 100%;
        height: 100%;
        background-color: #fff;
        z-index: 20;
        position: absolute;
    }
    #baffle_v p {
        margin-top: 180px;
    }
}