.form_search {
    border: 1px solid rgba(0, 0, 0, 0.06);
}

.year_select_box>.span {
    border: 1px solid rgba(0, 0, 0, 0.06);
}

/* 重磅产品 */
/* --- CSS 变量系统 --- */
:root {
    --card-collapsed-w: 456px;
    --card-active-w: 952px;
    --gap: 32px;
    --container-h: 538px;
    /* --container-w: 1400px; */
    --history-count: 3;
}

@media (max-width: 1680px) {
    :root {
        --card-collapsed-w: 350px;
        --card-active-w: 818px;
    }

}

@media (max-width: 1580px) {
    :root {
        --card-collapsed-w: 300px;
        --card-active-w: 818px;
    }

}

@media (max-width: 1440px) {
    :root {
        --card-collapsed-w: 300px;
        --card-active-w: 870px;
    }

}

@media (max-width: 1366px) {
    :root {
        --card-collapsed-w: 300px;
        --card-active-w: 836px;
    }

}

@media (max-width: 1280px) {
    :root {
        --card-collapsed-w: 270px;
        --gap: 30px;
        --card-active-w: 835px;
        --container-h: 500px;
    }
}
/* @media (max-width: 1279px) {
    :root {
        --card-collapsed-w: 250px;
        --card-active-w: 790px;
    }
} */
@media (max-width: 1024px) {
    :root {
        --card-collapsed-w: 250px;
        --card-active-w: 607px;
    }
}

@media (max-width:991px) {

    :root {
        --history-count: 2;
        --container-h: 450px;
    }

}

@media (max-width: 767px) {
    :root {
        --gap: 16px;
        --card-active-w: 85vw;
        --card-collapsed-w: 35vw;
        --container-h: 560px;
    }


}

/* --- 布局容器 --- */
.flagship_body {
    margin-top: 64px;
    margin-bottom: 75px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    /* user-select: none;
    touch-action: pan-y; */
}

.layout-container {
    width: 100%;
    height: var(--container-h);
    margin: 0 auto;
    position: relative;
    overflow: visible;
    touch-action: pan-y;
}

/* --- 手风琴列表 --- */
.accordion {
    display: flex;
    gap: var(--gap);
    height: 100%;
    width: max-content;
    margin-left: calc(var(--history-count) * (var(--card-collapsed-w) + var(--gap)) * -1);
    transform: translateX(0);
    will-change: transform;
}

/* 非循环模式下的样式 */
.no-loop .accordion {
    margin-left: 0 !important;
    width: 100%;
    justify-content: center;
}

/* --- 初始隐藏样式 --- */
.card.init-hidden {
    opacity: 0 !important;
    pointer-events: none;
}

/* --- 卡片样式 --- */
.card {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    height: 100%;
    width: var(--card-collapsed-w);
    border-radius: 8px;
    background-color: var(--white-color);
    cursor: pointer;
    overflow: hidden;
}

.card a {
    display: block;
    position: relative;
    width: 100%;
    height: 100%;
}

.card-old {
    position: relative;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: flex-start;
    height: 100%;
    width: var(--card-collapsed-w);
    transition: all 0.2s ease;
    z-index: 2;
}

.card-old .title {
    color: var(--dark-color);
    font-style: normal;
    font-weight: 700;
    line-height: 1.6;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

.card-old .des {
    padding-top: 16px;
    color: var(--dark-color);
    font-size: 18px;
    font-style: normal;
    font-weight: 400;
    line-height: 28px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    opacity: 0.6;
}

.card-old .more {
    display: flex;
    justify-content: center;
    align-items: center;
}

.card-old .more span {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 58px;
    background-color: #F8F9FB;
    width: 58px;
    height: 58px;
    padding: 10px;
}

.card-old .more span i {
    width: 20px;
    height: 20px;
    background-image: url(../images/flag_plus.svg);
    background-repeat: no-repeat;
    background-size: 20px;
}

.card-old .more:hover span {
    background-color: var(--main-color);
}

.card-old .more:hover span i {
    background-image: url(../images/video_plus_w.svg);
}

.card-hover .more {
    display: flex;
}

.card-hover .more span {
    position: relative;
    display: inline-flex;
    padding: 16px 20px;
    align-items: center;
    border-radius: 38px;
    background: var(--white-color);
    backdrop-filter: blur(8px);
    color: var(--main-color);
    font-size: 16px;
    font-style: normal;
    font-weight: 400;
}

/* .card-hover .more span::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 95%;
    height: 95%;
    background-color: rgba(255, 255, 255, 0.25);
    border-radius: 38px;
    cursor: pointer;
    transition: all 0.3s ease;
    transform: translate(-50%, -50%) scale(1);
    animation: playButtonBreathe 2s infinite ease-in-out;
    opacity: 0 !important;
    z-index: -1;
}
.card-hover .more span::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 110%;
    height: 110%;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 38px;
    cursor: pointer;
    transition: all 0.3s ease;
    transform: translate(-50%, -50%) scale(1);
    animation: playButtonBreathe 2s infinite ease-in-out;
    opacity: 0 !important;
    z-index: -1;
}

.card-hover .more:hover span::before,
.card-hover .more:hover span::after {
    opacity: 1 !important;
} */


.card-hover .more span i {
    width: 0;
    height: 10px;
    background-image: url(../images/red_icon01.svg);
    background-repeat: no-repeat;
    background-size: 100%;
    background-position: center;
    border-radius: 50%;
    opacity: 0;
    overflow: hidden;
    transition: all .3s;
}

.card-hover .more:hover span {
    /* background-color: var(--white-color);
    color: var(--main-color); */
    font-weight: 700;
    font-size: 18px;
}

.card-hover .more:hover span i {
    margin-right: 6px;
    width: 10px;
    opacity: 1;
}

.flag_img {
    position: absolute;
    right: 0;
    bottom: 0;
    width: 76%;
    max-width: 339px;
    /* z-index: -1; */
    /* transition: all 0.4s ease; */
}

.flag_img_hover {
    opacity: 0;
}

.card_title {
    margin-bottom: 15px;
    color: var(--main-color);
    font-style: normal;
    font-weight: 700;
    line-height: 1.5;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

.card-desc {
    color: var(--white-color);
    font-size: 18px;
    font-style: normal;
    font-weight: 400;
    line-height: 28px;
    max-width: 600px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    margin-bottom: 20px;
}


/* --- 状态样式 --- */
.flag_swiper .swiper-slide .slide-content::before {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    background-color: var(--white-color);
    transition: opacity .8s;
    opacity: 1;
    z-index: -1;
}
.flag_swiper .swiper-slide .slide-content:after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 61.4%;
    background-image: url(../images/flagship_icon_bg.svg);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center right;
    transition: opacity .6s, width .6s ease;
   /* transition-delay: .16s; */
    opacity: 0;
    z-index: -1;
}
.flag_swiper .m-active .slide-content::before {
    opacity: 0;
}
.flag_swiper .m-active .slide-content:after {
   opacity: 1;
   width: 100%;
}

.flag_swiper .m-active .card-old {
    opacity: 0;
    z-index: -1;
}

.flag_swiper .m-active .card-hover {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.5s ease;
    justify-content: space-between;
    z-index: 1;
}

.flag_swiper .m-active .flag_img {
    opacity: 0;
    z-index: 1;
    /* display: none; */
}

.flag_swiper .m-active .flag_img_hover {
    opacity: 1;
    height: auto;
    transform: translateY(0) scale(1);
    transition: all 1.4s;
    z-index: 1;
}

@media (min-width:768px) {

    .flag_img_hover {
        position: absolute;
        bottom: 0;
        right: 0;
        height: 100%;
        width: 538px;
        height: 100%;
        display: flex;
        align-items: flex-end;
        transform: translateY(80px) scale(0.8);
        z-index: 1;

    }

    .card-hover {
        position: absolute;
        top: 0;
        left: 0;
        height: 100%;
        padding: 40px;
        padding-right: 0;
        opacity: 0;
        transform: translateY(20px);
        width: 480px;
        max-width: var(--card-active-w);
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        z-index: 1;
    }

    .m-active .flag_img {
        transform: scale(1.5);
    }
    .swiper-slide-next .flag_img,
    .swiper-slide-prev  .flag_img {
        transition: transform 0.8s;
        transform: scale(1);
        transition-delay: 0.1s;
    }

}

/* PC端悬停效果 */
@media (max-width:1680px) {
    .card-hover {
        width: 400px;
    }

    .flag_img_hover {
        width: 500px;
    }

}

@media (max-width:1580px) {

    .flag_img_hover {
        width: 450px;
    }

}

@media (max-width:1440px) {

    .flag_img_hover {
        width: 470px;
    }

}

@media (max-width: 1366px) {
    .card-old {
        padding: 40px 30px;
    }
    .flag_img_hover {
       max-width: 55%;
    }

}

@media (max-width: 1180px) {
    .card-hover {
        width: 460px;
    }
    .flag_swiper .m-active .flag_img_hover {
        transition: all 1s;
    }
   

}
@media (max-width: 1180px) {
    .card-hover {
        width:360px;
    }

    .flag_img_hover {
        width: 400px;
    }

}
@media (max-width: 991px) {
    .card-hover {
        width: 300px;
    }
    .flag_img_hover {
        width: 350px;
    }

}

@media (max-width: 767px) {
    .flag_swiper .m-active .flag_img {
        display: none;
    }
    .flagship_body {
        margin-top: 20px;
        margin-bottom: 15px;
    }

    .layout-container {
        height: 100%;
    }

    .accordion {
        align-items: stretch;
    }

    .card {
        height: auto;
    }

    .card a {
        height: 450px;
    }

    .flag_img_hover {
        position: relative;
        width: 100%;
        max-width: 100%;
        height: auto;
        transform: inherit;
        height: 0;
    
    }
    .card_title {
        font-size: 20px;
        line-height: 26px;
        height: 78px;

    }

    .card-desc {
        margin-bottom: 25px;
        height: 50px;
        line-height: 25px;
        font-size: 16px;
        overflow: hidden;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
    }

    .card-hover {
        position: relative;
        padding: 10px 20px;
        width: 100%;
        opacity: 0;
        display: none;
    }

    .card.active {
        background-color: var(--white-color);
    }

    .card.active .flag_img_hover {
        opacity: 0;
        display: none;
    }

    .card.active .flag_img {
        opacity: 1;
        display: block;
    }

    .card-old {
        padding: 40px 20px;
        width: 100%;
    }

    .card.active .card-old {
        opacity: 1;
    }

    .card.active .card-hover {
        opacity: 0;
        display: none !important;
    }

    .card.active:after {
        display: none;
    }

    .card-old .more {
        display: none;
    }

    .card-old .more span {
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        width: 50px;
        height: 50px;
        padding: 10px;
    }

    .flag_img {
        position: relative;
        transform: inherit;
        right: inherit;
        width: 100%;
        max-width: 300px;
    }

    .m-active .card-hover {
        display: block;
    }

    .card-hover .more span {
        padding: 12px 20px 12px 24px;
    }
    .flag_img_hover {
        transform:scale(0.5);
    }
    .flag_swiper .m-active .flag_img_hover {
        transition: all 0.8s;
    }
    .flag_swiper .swiper-slide .slide-content:after {
        transition: opacity .6s, width .4s ease;
        transition-delay: .1s;
    }
    .flag_swiper .swiper-slide .slide-content:after {
        border-radius: 8px;
        background-position: 78% 50%;
    }

}

/* --- 浮动切换按钮 (PC端) --- */
.nav-btn-float {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    margin-top: -48px;
    width: 56px;
    height: 56px;
    background-color: var(--white-color);
    border: none;
    border-radius: 50%;
    box-shadow: 0 0 32px 0 rgba(0, 0, 0, 0.10);
    cursor: pointer;
    z-index: 10;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    color: #333;
    transition: all 0.3s;
}

.nav-btn-float:focus {
    box-shadow: 0 0 32px 0 rgba(0, 0, 0, 0.10);
}

.nav-btn-float:hover {
    background-color: var(--main-color);
    color: var(--white-color);
    transform: translateY(-50%) scale(1.01);
}

.nav-btn-float.disabled,
.ctrl-btn.disabled {
    opacity: 0.3;
    cursor: not-allowed;
    pointer-events: none;
    filter: grayscale(1);
}


.nav-btn-float.prev {
    left: -30px;
}

.nav-btn-float.next {
    right: -30px;
}

.nav-btn-float i,
.nav-btn-float i {
    background-repeat: no-repeat;
    background-size: cover;
    display: block;
    width: 24px;
    height: 24px;
}

#btmPrevBtn i,
.nav-btn-float.prev i {
    background-image: url(../images/main_left.svg);
}

#btmNextBtn i,
.nav-btn-float.next i {
    background-image: url(../images/main_right.svg);
}

#btmPrevBtn:hover i,
.nav-btn-float.prev:hover i {
    background-image: url(../images/white_left.svg);
}

#btmNextBtn:hover i,
.nav-btn-float.next:hover i {
    background-image: url(../images/white_right.svg);
}

.ctrl-btn i {
    background-repeat: no-repeat;
    background-size: cover;
    display: block;
    width: 20px;
    height: 20px;
}

/* --- 底部控制栏 --- */
.controls-wrapper {
    display: flex;
    align-items: center;
    margin-top: 40px;
    z-index: 20;
}

.flagship_body .pagination {
    display: flex;
    display: inline-flex;
    height: 56px;
    padding: 18px 20px;
    margin: 0 auto;
    align-items: center;
    border-radius: 50px;
    background-color: var(--white-color);

}

.flagship_body .pagination span {
    margin: 0 5px;
    width: 8px;
    height: 8px;
    background: rgba(0, 0, 0, 0.10);
    border-radius: 50%;
    opacity: 1 !important;
    cursor: pointer;
    transition: all 0.3s;
}

.flagship_body .pagination .swiper-pagination-bullet-active {
    width: 30px;
    background-color: var(--main-color);
    border-radius: 5px;
}

.ctrl-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--white-color);
    box-shadow: 0 0 32px 0 rgba(0, 0, 0, 0.10);
    color: #666;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

@media (max-width: 767px) {
    .ctrl-btn {
        display: flex;
    }

    .flagship_body .pagination {
        margin-left: 5px;
        margin-right: 5px;
        height: 44px;
        padding: 12px 20px;
    }

    .dot {
        margin: 0 3px;
        width: 8px;
        height: 8px;
    }

    .dot.active {
        width: 20px;
    }

    .nav-btn-float {
        width: 50px;
        height: 50px;
    }


}

.ctrl-btn:hover {
    background-color: var(--main-color);
    color: white;
    border-color: var(--main-color);
}

.is-animating .card,
.is-animating .nav-btn-float,
.is-animating .ctrl-btn,
.is-animating .dot {
    pointer-events: none;
}


/* footer */
.right_fixed {
    position: fixed;
    right: 24px;
    bottom: 40px;
    z-index: 9999;
}

.right_fixed ul {
    display: flex;
    flex-flow: column;
    align-items: flex-end;
}

.right_fixed ul li {
    position: relative;
    margin-bottom: 8px;
}

.right_fixed ul li:last-child {
    margin-bottom: 0;
}

.right_fixed>ul>li>a {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-left: 16px;
    padding-right: 16px;
    width: 56px;
    height: 56px;

    border-radius: 38px;
    background: var(--white-color);
    box-shadow: 0 0 12px 0 rgba(0, 0, 0, 0.08);
    overflow: hidden;
    transition: width .4s;
}

.right_fixed>ul>li>a span {
    position: absolute;
    right: 52px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--main-color);
    font-size: 16px;
    font-style: normal;
    font-weight: 400;
    line-height: 26px;
    white-space: nowrap;
    opacity: 0;
}

.right_fixed>ul>li i img:nth-child(2) {
    display: none;
}

.right_fixed .top-button {
    margin-top: 92px;
    display: none;
    cursor: pointer;
}

.right_fixed ul li .hide_tel {
    position: absolute;
    right: calc(100% + 10px);
    top: 50%;
    transform: translateY(-50%);
    width: 150px;
    padding: 20px 15px;
    text-align: center;
    background-color: var(--red-color);
    opacity: 0;
    justify-content: center;
    border-radius: 4px;
    -webkit-transition: all 0.4s;
    -moz-transition: all 0.4s;
    -ms-transition: all 0.4s;
    -o-transition: all 0.4s;
    transition: all 0.4s;
    z-index: -1;
    box-shadow: 0 4px 10px 0 rgb(0 0 0 / 10%);
}

.right_fixed ul li .hide_tel:before {
    border: solid transparent;
    content: ' ';
    height: 0;
    position: absolute;
    width: 0;
    border-width: 10px;
    border-left-color: var(--red-color);
    right: -20px;
    top: 50%;
    transform: translateY(-50%);
}

.right_fixed ul li .hide_tel>a {
    color: #ffffff;
    font-size: 16px;
    background-color: transparent;
    border: none;
    padding: 0;
}

@media all and (min-width:991px) {
    .right_fixed>ul>li>a:hover {
        width: 130px;
        overflow: visible;
    }

    .right_fixed ul li:hover {
        overflow: visible;
    }

    .right_fixed ul li:hover .hide_tel {
        opacity: 1;
        z-index: 8;
    }

    .right_fixed>ul>li>a:hover span {
        opacity: 1;
        transition: opacity .6s;
    }

    .right_fixed>ul>li>a:hover i img:first-child {
        display: none;
    }

    .right_fixed>ul>li>a:hover i img:nth-child(2) {
        display: block;
    }
}

/* 弹窗 */
.open-modal-btn {
    padding: 8px 16px;
    background: #0052d9;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin: 20px;
}

/* 弹窗遮罩层（默认隐藏，添加过渡） */
.modal-overlay {
    position: fixed;
    right: 90px;
    bottom: 40px;
    /* right: 0;
    bottom: 0; */

    width: 100%;
    /* height: 100%; */
    max-width: 645px;
    max-height: 100%;
    display: none;
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* 遮罩层显示状态 */
.modal-overlay.show {
    display: block;
    opacity: 1;
}

.modal-container {
    /* position: absolute; */
    /* right: 80px;
    bottom: 40px; */
      right: 0;
    bottom: 0;
    max-width: 645px;
    width: 100%;
   max-height: 100%;
    padding: 24px;
    padding-bottom: 14px;
    border-radius: 16px;
    border: 1px solid rgba(0, 0, 0, 0.10);
    background: var(--white-color);
    box-shadow: 0 0 32px 0 rgba(0, 0, 0, 0.08);

    transform: translateY(50px) scale(0.95);
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}
#modalOverlay .modal-container .pr {
    max-height:calc(95vh - 80px);
    overflow-y: auto;
}
.modal-overlay.show .modal-container {
    transform: translateY(0) scale(1);
    opacity: 1;
    pointer-events: all;
}

/* 弹窗标题 */
.modal-title {
    font-weight: 700;
    color: var(--dark-color);
}

/* 关闭按钮 */
.close-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--white-color);
    border-radius: 48px;
    border: 1px solid rgba(0, 0, 0, 0.10);
    font-size: 18px;
    cursor: pointer;
    color: #999;
    transition: color 0.2s ease;
}

@media (min-width:992px) {
    .modal-title {
        height: 40px;
        line-height: 40px;
    }

    .close-btn {
        position: absolute;
        right: 0px;
        top: 0px;
    }

}

.close-btn svg {
    transition: all 0.2s ease;
}

.close-btn:hover {
    background-color: var(--main-color);
}

.close-btn:hover svg {
    transform: rotate(90deg);
}

.close-btn:hover svg path {
    stroke: var(--white-color);
}

.modal-container .messform {
    padding-top: 11px;
}

.modal-container .col {
    width: 100%;
    padding: 14px;
    padding-left: 0;
    padding-right: 0;
}

.modal-container .messform {
    margin: 0;
}

.modal-container .messform .text-area span {
    top: 21px;
}

.modal-container .messform .input-container input {
    padding-right: 16px;
    height: 54px;
}

.modal-container .messform .input-container input::placeholder {
    color: #666;
}

.modal-container .messform .input-container input::-webkit-input-placeholder {
    color: #666;
}

.modal-container .messform .input-container input:-moz-placeholder {
    color: #666;
}

.modal-container .messform .input-container input:-ms-input-placeholder {
    color: #666;
}


.modal-container .product-multi-select {
    max-height: 348px;
}

.modal-container .yanz {
    display: flex;
    justify-content: space-between;
    padding: 0;
}

.modal-container .yanz .col:first-child {
    width: calc(66% - 6px);
}

.modal-container .yanz .col:nth-child(2) {
    width: calc(34% - 6px);
}

.modal-container .message_code {
    border-radius: 8px;
    cursor: pointer;
    overflow: hidden;
}

.modal-container .message_code img {
    width: 100%;
    height: 54px;
}

.modal-container .messform .last_button {
    padding-top: 16px;
    padding-left: 0;
    padding-right: 0;
    justify-content: space-between;
}

.modal-container .messform .reset,
.modal-container .messform .submit {
    width: calc(50% - 6px);
    border-radius: 8px;
}

@media (max-width:991px) {
    .right_fixed {
        right: 4px;
        bottom: 10px;
        z-index: 99;
    }

    .right_fixed>ul>li>a {
        padding-left: 13px;
        padding-right: 13px;
        width: 52px;
        height: 52px;
        border-radius: 38px;
    }

    .right_fixed .top-button {
        margin-top: 30px;
    }

    .modal-container {
        max-height: calc(100vh - 30px);
        overflow-y: auto;
    }

    #modalOverlay .modal-container .pr {
        max-height: 100%;
        padding-bottom: 60px;
        overflow-y: inherit;
    }

    #modalOverlay .close-btn {
        position: absolute;
        bottom: 0px;
        left: 50%;
        transform: translateX(-50%);
    }
}

@media (max-width:767px) {

    .modal-container {
        border-bottom-left-radius: 0;
        border-bottom-right-radius: 0;
    }
    .multi-tag-container{
        height: 54px;
        padding-right: 82px !important;
    }
    .modal-container .product-multi-select {
        max-height: 47vh;
    }
   
    .modal-container .message_code img {
        height: 56px;
    }
}

/* mess */
.select-checkbox {
    display: inline-block;
    width: 12px;
    height: 12px;
    margin-top: 5px;
    margin-right: 8px;
    cursor: pointer;
    position: relative;
    border: 1px solid var(--main-color);
    border-radius: 50%;
    background-color: var(--white-color);
    vertical-align: middle;
    /* transition: all 0.2s; */
}

.select-checkbox.selected {
    border-color: transparent;
    background-color: transparent;
     background-color: var(--main-color);
     /*background-image: url(../images/red_icon01.svg);
    background-repeat: no-repeat;
    background-size: 12px;
    background-position: center; */
    border-radius: 50%;
}

.product-select-item {
    padding: 10px 0;
    cursor: pointer;
    display: flex;
}

.product-select-item:first-child {
    padding-top: 0;
}

.product-select-item:last-child {
    padding-bottom: 0;
}

.product-select-item:hover .product-text {
    color: var(--main-color);
}

.product-select-item:hover .select-checkbox {
    border-color: transparent;
    background-color: transparent;
    background-image: url(../images/red_icon01.svg);
    background-repeat: no-repeat;
    background-size: 12px;
    background-position: center;
    border-radius: 50%;
}

.product-text {
    font-size: 16px;
    color: #666;
    vertical-align: middle;
    flex: 1;
    max-width: fit-content;
}

#m_product,
#xueli {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 基础容器样式 */
.input_select_box02 {
    position: relative;
    width: 100%;
}

/* 模拟输入框容器 - 存放标签 */
.multi-tag-container {
    height: 54px;
    padding: 6px 16px;
    padding-left: 30px;
    padding-right: 90px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s;
    box-sizing: border-box;
    position: relative;
}

.multi-tag-container:hover {
    border-color: #3b82f6;
}
.mess_form .messform .multi-tag-container {
    padding: 12px 16px;
    padding-right: 96px;
    height: 64px;
}

/* 占位符样式 */
.placeholder {
    color: #666;
    font-family: "Microsoft YaHei";
    font-size: 16px;
    user-select: none;
}

/* 单个标签样式 */
.tag-item {
    margin-right: 8px;
    display: flex;
    padding: 8px 12px;
    justify-content: center;
    align-items: center;
    max-width: 162px;
    width: calc(42% - 8px);
    border-radius: 6px;
    border: 1px solid rgba(0, 0, 0, 0.08);
    background: var(--white-color);
}

.tag-text {
    flex: 1;
    color: #666;
    font-size: 16px;
    font-style: normal;
    font-weight: 400;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tag-close {
    margin-left: 6px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background-image: url(../images/mess_close.svg);
    background-repeat: no-repeat;
}

/* 更多计数标签 (+N) */
.tag-rest {
    color: #666;
    font-size: 16px;
    font-style: normal;
    font-weight: 400;
    line-height: 26px;
    /* cursor: help; */
    position: relative;
}

/* --- 悬停浮层 (Popover) --- */
.rest-tags-popover {
    position: absolute;
    border-radius: 8px;
    background: #F8F9FB;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    padding: 12px;
    z-index: 1000;
    display: none;
    flex-direction: column;
    width: 220px;
    bottom: calc(100% + 7px);
    right: -62px;

}

/* 浮层小三角 */
.rest-tags-popover::after {
    content: '';
    position: absolute;
    top: 100%;
    right: 62px;

    border: 6px solid transparent;
    border-top-color: #F8F9FB;
}

.tag-rest:hover .rest-tags-popover {
    display: flex;
}

.popover-item {
    display: flex;
    margin-bottom: 8px;
    padding: 8px 12px;
    justify-content: center;
    align-items: center;
    border-radius: 6px;
    border: 1px solid rgba(0, 0, 0, 0.08);
    background: var(--white-color);
}

.popover-item:last-child {
    margin-bottom: 0;
}

.popover-item>div:first-child {
    flex: 1;
    color: #666;
    font-size: 16px;
    font-style: normal;
    font-weight: 400;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tag-item:hover .tag-text {
    color: var(--main-color);
}

.popover-item:hover>div:first-child {
    color: var(--main-color);
}


/* 下拉箭头 */
.icon-arrow {
    position: absolute;
    width: 24px;
    height: 24px;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
}
.icon-arrow  {
    font-size: 0;
}
.icon-arrow i{
    display: block;
    width: 24px;
    height: 24px;
    background-image: url(../images/chevron-down2.svg);
    background-repeat: no-repeat;
    pointer-events: none;
    transition: transform .3s;
}
.aa .icon-arrow {
    width:90px;
    font-size: 16px;
    color: var(--main-color);
}
.aa .icon-arrow i{
    transform:rotate(180deg);
    background-image: url(../images/chevron-down3.svg);
}

/* 下拉列表样式 */
.product-multi-select {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    padding: 24px;
    padding-left: 32px;
    width: 100%;
    border-radius: 4px;
    background: #F2F4F6;
    z-index: 100;
    display: none;
    max-height: 420px;
    overscroll-behavior: contain;
    overflow-y: auto;
}

.product-multi-select::-webkit-scrollbar {
    width: 4px;
    height: 2px
}

.product-multi-select::-webkit-scrollbar-button:vertical {
    display: none
}

.product-multi-select::-webkit-scrollbar-corner,
::-webkit-scrollbar-track {
    background-color: #999;
}

.product-multi-select::-webkit-scrollbar-thumb {
    border-radius: 0;
    background-color: var(--main-color);
}

#m_product,
#xueli {
    display: none !important;
}

@media (max-width: 767px) {
    .modal-container {
        position: fixed;
        right: 0;
        bottom: 0;
        padding: 24px 20px;
    }
    .icon-arrow {
        right: 12px;
    }
    .aa .icon-arrow {
    width: 82px;
        font-size: 14px;
    }
    .placeholder {
    /* font-size: 14px; */
}
 .multi-tag-container {
        padding-left: 16px;
    }

}
@media (max-width: 359px) {
.placeholder {
    font-size: 14px;
}
.modal-container .messform .input-container input::placeholder {
     font-size: 14px;
}

.modal-container .messform .input-container input::-webkit-input-placeholder {
     font-size: 14px;
}

.modal-container .messform .input-container input:-moz-placeholder {
     font-size: 14px;
}

.modal-container .messform .input-container input:-ms-input-placeholder {
    font-size: 14px;
}


}
/* product detail*/
/* 导航容器 */
.pro_d_menu {
    padding-right: 30px;
    padding-left: 30px;
    display: flex;
    justify-content: center;
}

.pro_d_menu.m_top {
    top: 106px;
}

@media (max-width: 1100px) {
    .pro_d_menu.m_top {
        top: 60px;
    }
}

@media (max-width: 767px) {
    .pro_d_menu {
        top: 75px;
        padding-left: 0;
        padding-right: 0;
    }

    .pro_d_menu.m_top {
        top: 75px;
    }
}

.pro_d_menu ul {
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    justify-content: flex-start;
}

.pro_d_menu ul::-webkit-scrollbar {
    width: 0;
    height: 0;
}

.pro_d_menu ul::-webkit-scrollbar-button:vertical {
    display: none
}

.pro_d_menu ul::-webkit-scrollbar-corner,
::-webkit-scrollbar-track {
    background-color: #999;
}

.pro_d_menu ul::-webkit-scrollbar-thumb {
    border-radius: 0;
    background-color: var(--main-color);
}

.pro_d_menu ul li {
    flex-shrink: 0;
}

.pro_d_menu a {
    white-space: nowrap;
    /* 确保文字也不换行 */
    transition: all 0.3s;
}

/* 场景应用 */
.sapp_swiper {
    margin-top: 40px;
    overflow: visible;
}

.sapp_swiper .bg {
    width: 100%;

}

.sapp_swiper a {
    display: block;
    cursor: pointer;
}

.sapp_swiper .thumb {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
}

.sapp_swiper .thumb i {
    border-radius: 4px;
    display: block;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    overflow: hidden;
    -webkit-transition: -webkit-transform .6s;
    transition: -webkit-transform .6s;
    -o-transition: transform .6s;
    transition: transform .6s;
    transition: transform .6s, -webkit-transform .6s;
    -webkit-transition: transform .6s;
}

.sapp_swiper .play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity .3s;
}

.sapp_swiper .play span {
    position: relative;
    display: flex;
    width: 56px;
    height: 56px;
    z-index: 1;
}

.play span::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 115%;
    height: 115%;
    background-color: rgba(255, 255, 255, 0.25);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    transform: translate(-50%, -50%) scale(1);
    animation: playButtonBreathe 2s infinite ease-in-out;
    z-index: -1;
}

.play span::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 150%;
    height: 150%;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    transform: translate(-50%, -50%) scale(1);
    animation: playButtonBreathe 2s infinite ease-in-out;
    z-index: -1;
}

@keyframes playButtonBreathe {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0;
    }

    50% {
        transform: translate(-50%, -50%) scale(1.3);
        opacity: 1;
    }

    100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0;
    }
}

.sapp_swiper .cont {
    padding-top: 22px;
}

.sapp_swiper .t {
    position: relative;
    color: var(--dark-color);
    font-style: normal;
    font-weight: 700;
    line-height: 32px;
    transition: all .3s;
}

.sapp_swiper .t::before {
    content: "";
    position: absolute;
    left: 0;
    top: 13px;
    width: 8px;
    height: 8px;
    background-image: url(../images/red_icon01.svg);
    background-repeat: no-repeat;
    background-size: 100%;
    background-position: center;
    border-radius: 50%;
    opacity: 0;
    transition: opacity .3s;
}

.sapp_swiper .text {
    padding-top: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sapp_swiper .text {
    color: var(--main-color);
    font-size: 16px;
    font-style: normal;
    font-weight: 400;
}

.sapp_swiper .text .time {
    padding-left: 28px;
    font-family: "Muli Web";
    font-weight: 300;
    font-size: 18px;
    background-image: url(../images/cjyy_time_blue.svg);
    background-position: 0;
    background-size: 20px;
    background-repeat: no-repeat;
}

/* hover */
.sapp_swiper a:hover .thumb i {
    -webkit-transform: scale(1.05);
    -ms-transform: scale(1.05);
    transform: scale(1.05);
}

.sapp_swiper a:hover .play {
    opacity: 1;
}

.sapp_swiper a:hover .t {
    padding-left: 16px;
    color: var(--main-color);
}

.sapp_swiper a:hover .t::before {
    opacity: 1;
    transition-delay: .1s;
}

.sapp_swiper a:hover .text {
    color: #727171;

}

.sapp_swiper a:hover .text .time {
    background-image: url(../images/cjyy_time_grey.svg);
}

.pro_cj_bg:after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 11.5%;
    height: 100%;
    background: linear-gradient(270deg, #F8F9FB 0%, rgba(248, 249, 251, 0.00) 100%);
    z-index: 10;
}

.pro_cj_bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    transform: rotate(180deg);
    width: 11.5%;
    height: 101%;
    background: linear-gradient(270deg, #F8F9FB 0%, rgba(248, 249, 251, 0.00) 100%);
    z-index: 10;
}

/*一线动态 */
.line_bg {
    margin-top: 40px;
}

.hide-right-mask:after {
    display: none;
}

.front_line .line_swiper .label {
    position: absolute;
    top: 16px;
    left: 16px;
    display: flex;
}

.front_line .line_swiper .label span {
    display: flex;
    padding: 10px;
    justify-content: center;
    align-items: center;
    border-radius: 2px;
    background: rgba(0, 0, 0, 0.30);
    backdrop-filter: blur(8px);
    color: var(--white-color);
    text-align: justify;
    font-size: 16px;
    font-style: normal;
    font-weight: 400;
    line-height: 26px;
}

.front_line .new_aca_swiper .title {
    margin-top: 16px;
    height: 32px;
}

.term_box:last-child {
    padding-bottom: 88px;
}

@media (max-width: 1580px) {

    .pro_cj_bg:after,
    .pro_cj_bg::before {
        width: 9.5%;
    }
}

@media (max-width: 1440px) {

    .pro_cj_bg:after,
    .pro_cj_bg::before {
        width: 8%;
    }
}

@media (max-width: 1366px) {

    .pro_cj_bg:after,
    .pro_cj_bg::before {
        width: 7.5%;
    }
}

@media (max-width: 1280px) {

    .pro_cj_bg:after,
    .pro_cj_bg::before {
        width: 6.5%;
    }
}

@media (max-width: 1100px) {

    .pro_cj_bg:after,
    .pro_cj_bg::before {
        width: 7%;
    }
}

@media (max-width:991px) {
    .sapp_swiper .t {
        font-size: 18px;
        line-height: 28px;
    }

    .pro_cj_bg:after,
    .pro_cj_bg::before {
        width: 30px;
    }
}

@media (max-width: 767px) {
    .term_box:last-child {
        padding-bottom: 50px;
    }

    .pro_cj_bg:after,
    .pro_cj_bg::before {
        width: 16px;
    }

}

/* 文献指南 */
.new_list_box {
    position: relative;
    z-index: 1;
}

.wxzn_list .text {
    width: calc(100% - 10px);
}

.wxzn_bottom .first {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    color: #666;
    font-size: 16px;
    font-style: normal;
    font-weight: 400;
}

.wxzn_bottom .first span {
    margin-left: 8px;
    margin-right: 8px;
    color: #666;
    font-size: 16px;
    font-style: normal;
    font-weight: 400;
}

.wxzn_bottom .w_author {
    margin-top: 8px;
    overflow: hidden;
    color: #666;
    font-size: 16px;
    font-style: normal;
    font-weight: 400;
    line-height: 26px;
}

@media (max-width: 767px) {
    .wxzn_bottom .first {
        margin-top: 20px;
        flex-flow: column;
        align-items: flex-start;
    }

    .wxzn_bottom .first span {
        opacity: 0;
        width: 100%;
        margin-left: 0;
        margin-right: 0;
        height: 2px;
    }
}

/* 文献详情 */
.letter_top {
    background-color: #F8F9FB;
    z-index: 1;
}

.letter_top .article_top_left {
    padding: 0;
    padding-top: 88px;
    width: 100%;
}
.letter_top .article_box_left {
    margin-right: 100px;
}
.letter_top .article_box_right {
    width:300px;
}
.letter_top .box_right .list .thumb {
    width: 135px;
}
.letter_top .mid {
    padding-top: 8px;
    width: 100%;
}

.letter_top .article_top_left .article_time {
    padding-top: 0;
}

.letter_top .article_top_left h2 {
    max-width: 954px;
    margin-top: 0;
}

.letter_top .article_top_left .news-details-content-share {
    padding: 0;
}

.letter_top .article_box {
    padding-top: 42px;
    padding-bottom: 70px;
}

.letter_athor {
    display: flex;
    padding-bottom: 24px;
    margin-bottom: 24px;
    flex-direction: column;
    align-items: flex-start;
    align-self: stretch;
    border-bottom: 1px solid rgba(0, 0, 0, 0.10);

}

.letter_athor p {
    display: flex;
    align-items: center;
    color: var(--dark-color);
    font-size: 18px;
    font-style: normal;
    font-weight: 400;
    line-height: 2;
}

.letter_athor p span {
    /* display: block; */
    margin-left: 8px;
    margin-right: 8px;
}

.letter_top .box_right>.title {
    border-bottom: none;
    margin-bottom: 0;
}

.letter_down {
    padding-top: 60px;
}

.letter_down a {
    display: flex;
    padding: 20px 26px 20px 32px;
    justify-content: center;
    align-items: center;
    border-radius: 50px;
    background: var(--main-color);
    color: var(--white-color);
    font-size: 18px;
    font-style: normal;
    font-weight: 400;
}

.letter_down a img {
    margin-left: 16px;
    width: 30px;
    height: 30px;
}

.letter_bottom {
    padding-top: 64px;
    padding-bottom: 88px;
}

.letter_bottom .pto_d_title {
    color: var(--main-color);
    font-weight: 700;
    line-height: 1.5;
}
.box_right .list .thumb i img{
    width: 100%;
}
@media (max-width: 1440px) {
    .letter_top .article_box_left {
        margin-right: 80px;
    }
}
@media (max-width: 1366px) {
    .letter_top .box_right .list .thumb {
        width: 125px;
    }
    .letter_top .article_box_right {
        width: 25%;
    }
}
@media (max-width: 1279px) {
    .letter_top .article_box_left {
        margin-right: 60px;
    }
    .letter_top .box_right .list .info .title {
        font-size: 16px;
        line-height: 26px;
    }
    .letter_top .box_right .title::before {
        top: 9px;
    }
}
@media (max-width: 1200px) {
    .letter_top .article_box>div:first-child {
        flex-wrap: wrap;
        flex-flow: column;
    }
    .letter_top .article_box_left {
        width: 100%;
        margin-right: 0;
    }
    .letter_top .article_box_right {
        padding-top: 30px;
        width: 100%;
        /* max-width: 450px; */
    }
    .letter_top .article_box_right ul {
        display: flex;
        flex-wrap: wrap;
        margin-left: -10px;
        margin-right: -10px;
    }
    .letter_top .box_right .list li {
        margin: 10px;
        margin-top: 0;
        margin-bottom: 0;
        width: calc(25% - 20px);
    }
    .letter_top .box_right .list li a {
        flex-wrap: wrap;
    }
    .letter_top .box_right .list .thumb {
        width: 100%;
    }
    .letter_top .box_right .list .info {
        flex: inherit;
        padding-left: 0;
        padding-top: 20px;
    }
    .letter_top .box_right .list .info .time {
        margin-top: 10px;
    }
}
@media (max-width:767px) {

    .letter_top .box_right .title::before {
        top: 10px;
    }
    .letter_top .box_right .list .info .title {
        font-size: 18px;
        line-height: 28px;
    }
    .letter_top .box_right .list li {
        width: 100%;
    }
}
/* video control */
/* 底部控制栏 */
.controls-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.85), transparent);
    padding: 40px 15px 15px 15px;
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 20;
}

/* 鼠标悬停容器时显示控制栏 */
.player-container:hover .controls-bar {
    opacity: 1;
}

/* 进度条区域 */
.progress-container {
    position: relative;
    width: 100%;
    height: 5px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 5px;
    cursor: pointer;
    transition: height 0.1s;
}

.progress-container:hover {
    height: 7px;
}

/* 进度条填充色 */
.progress-filled {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: var(--main-color);
    width: 0%;
    border-radius: 5px;
    pointer-events: none;
}

/* 隐藏的 input range，用于实际拖拽交互 */
.seek-slider {
    position: absolute;
    top: -5px;
    left: 0;
    width: 100%;
    height: 15px;
    opacity: 0;
    cursor: pointer;
    z-index: 2;
    margin: 0;
}

/* 控制按钮行布局 */
.controls-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #fff;
}

.controls-left,
.controls-right {
    display: flex;
    align-items: center;
}

/* 通用按钮样式 */
.btn-control {
    margin-right: 15px;
    background: none;
    border: none;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.85;
    transition: all 0.2s;
    padding: 0;
}

.btn-control:hover {
    opacity: 1;
    color: #3b82f6;
    transform: scale(1.1);
}

.btn-control svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

/* 时间显示 */
.time-display {
    color: #FFF;
    font-family: "Microsoft YaHei";
    font-size: 18px;
    font-style: normal;
    font-weight: 400;
    margin-left: 5px;
}

/* 音量控制区域 */
.volume-wrapper {
    display: flex;
    align-items: center;
    position: relative;
}

.volume-slider-container {
    width: 0;
    overflow: hidden;
    transition: width 0.3s ease;
    display: flex;
    align-items: center;
}

/* 悬停音量图标时展示滑块 */
.volume-wrapper:hover .volume-slider-container {
    width: 70px;
}

.volume-slider {
    -webkit-appearance: none;
    width: 60px;
    height: 4px;
    background: #555;
    border-radius: 2px;
    outline: none;
    margin-left: 8px;
    cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    background: #fff;
    border-radius: 50%;
    cursor: pointer;
}

/* 更多菜单 */
.more-wrapper {
    position: relative;
}

.more-dropdown {
    position: absolute;
    bottom: 40px;
    right: -15px;
    background: rgba(20, 20, 20, 0.95);
    border-radius: 6px;
    padding: 8px 0;
    min-width: 120px;
    display: none;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    z-index: 30;
}

/* 悬停显示菜单 */
.more-wrapper:hover .more-dropdown {
    display: block;
}

.menu-item {
    padding: 8px 16px;
    font-size: 13px;
    color: #eee;
    cursor: pointer;
    transition: background 0.2s;
    white-space: nowrap;
}

.menu-item:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
}

/* 辅助类 */
.hidden {
    display: none !important;
}

/* 全屏时隐藏圆角 */
.player-container:fullscreen {
    border-radius: 0;
    max-width: none;
    width: 100%;
    height: 100%;
}

@media (max-width:1100px) {
    .height100 {
        height: 60px;
    }
}

@media (max-width:991px) {

    .article_box>.my-container {
        flex-wrap: wrap;
    }

    .article_box_left {
        margin-right: 0;
        flex: inherit;
        width: 100%;
    }

    .article_box_right {
        padding-top: 30px;
        width: 100%;
    }

    .letter_top .article_box>div:first-child {
        flex-wrap: wrap;

    }

}

@media (max-width: 767px) {
    .height100 {
        height: 75px;
    }

    .letter_bottom {
        padding-top: 50px;
        padding-bottom: 50px;
    }

    .letter_top .article_top_left {
        padding-top: 50px;
    }

    .letter_top .mid {
        padding-top: 15px;
        flex-flow: column;
        align-items: flex-start;
        justify-content: flex-start;
    }

    .letter_top .article_top_left .news-details-content-share {
        padding-top: 15px;
    }

    .letter_athor p {
        font-size: 16px;
    }

    .letter_athor p:first-child {
        padding-bottom: 15px;
        flex-wrap: wrap;
        /* flex-flow: column;
    align-items: flex-start; */
    }

    .letter_athor p span {
        margin-left: 4px;
        margin-right: 4px;
        /* display: block;
    margin-left: 0;
    margin-right: 0;
    font-size: 0; */
    }

    .letter_top .article_box>div:first-child {
        flex-flow: column;
    }

    .letter_down a {
        padding: 12px 20px 12px 26px;
        font-size: 16px;
    }

    .letter_down a img {
        margin-left: 10px;
        width: 26px;
        height: 26px;
    }

    .letter_down {
        padding-top: 30px;
    }

}

/* 用户服务 */
.user_video {
    padding-top: 90px;
    padding-bottom: 36px;
}

.video_section {}

/* Tab 头部样式 */
.video_section .tab-header {
    /* margin-top: 30px; */
    margin-bottom: 20px;
    display: flex;
    flex-wrap: wrap;
}

.video_section .tab-header .tab-item {
    /* padding: 16px 24px; */
    margin-right:30px;
    margin-bottom: 10px;
    cursor: pointer;
    font-size: 16px;
    color: #666;
    position: relative;
    /* min-width: 140px; */
    /* text-align: center; */
    /* 
    
    border-radius: 8px;
    background-color: #EDEDED; */
    transition: all 0.3s;
}

.video_section .tab-header .tab-item span {
    position: relative;
    padding-left: 12px;
    color: #666;
    font-size: 18px;
    font-style: normal;
    font-weight: 400;
    line-height: 28px;
    transition: all .4s;
}

.video_section .tab-header .tab-item span::before {
    content: "";
    position: absolute;
    left: 0;
    top: 9px;
    width: 8px;
    height: 8px;
    background-image: url(../images/red_icon01.svg);
    background-repeat: no-repeat;
    background-size: 100%;
    background-position: center;
    border-radius: 50%;
    opacity: 0;
    transition: opacity .3s;
}

.video_section .tab-header .tab-item:hover,
.video_section .tab-header .tab-item.active {
    /* background-color: var(--main-color); */
}

.video_section .tab-header .tab-item:hover span,
.video_section .tab-header .tab-item.active span {
    
    color: var(--main-color);
    /* color: var(--white-color); */
}

.video_section .tab-header .tab-item:hover span::before,
.video_section .tab-header .tab-item.active span::before {
    opacity: 1;
    transition-delay: .1s;
}


.tab-item.active::after {
    content: "";
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
}

.video_section .tab-content {
    margin-top: 0;
    min-height: 400px;
}

.video_list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: none;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.video_list li {
    padding: 20px;
    width: 33.33%;
}

.video_list.active {
    display: flex;
    flex-wrap: wrap;
    margin-left: -20px;
    margin-right: -20px;
}

.video_section .sapp_swiper .text {
    color: #949494;
}

.video_section .sapp_swiper .text .time {
    background-image: url(../images/cjyy_time_grey.svg);
}

.load-more-container {
    text-align: center;
}

.btn-load-more {
    display: inline-flex;
    padding: 18px 20px 18px 24px;
    margin-top: 40px;

    justify-content: center;
    align-items: center;
    border-radius: 8px;
    border: 1px solid rgba(0, 0, 0, 0.10);
    background-color: transparent;
    color: var(--main-color);
    font-size: 16px;
    font-style: normal;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.3s;
    outline: none;
}

.btn-load-more i {
    margin-left: 24px;
    width: 24px;
    height: 24px;
    background-image: url(../images/video_plus.svg);
    background-repeat: no-repeat;
}

.btn-load-more:hover {
    border-color: var(--main-color);
    color: var(--white-color);
    background-color: var(--main-color);
}

.btn-load-more:hover i {
    background-image: url(../images/video_plus_w.svg);
}

.btn-load-more.loading {
    background-color: #f5f5f5;
    color: #ccc;
    cursor: not-allowed;
}

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 991px) {
    .video_list.active {
        margin-left: -12px;
        margin-right: -12px;
    }

    .video_list li {
        padding: 12px;
    }
}

@media (max-width: 767px) {
    .user_video {
        padding-top: 50px;
        padding-bottom: 0px;
    }

    .video_section .tab-header .tab-item {
        /* padding: 14px 8px; */
        padding: 8px 8px;
        margin-right: 0;
        /* margin-right: 8px; */
        min-width: inherit;
        /* width: calc(33.33% - 8px); */
        width:33.33%;
    }
    .video_section .tab-header {
        margin-bottom: 0;
    }
    .video_list.active {
        margin-left: -10px;
        margin-right: -10px;
    }

    .video_list li {
        padding: 15px 10px;
        width: 50%;
    }

    .sapp_swiper .cont {
        padding-top: 16px;
    }

    .sapp_swiper .text {
        padding-top: 10px;
    }

    .video_section .tab-header .tab-item span {
        font-size: 16px;
    }

}

@media (max-width: 540px) {
    .video_list li {
        width: 100%;
    }
}

/* video detail */
.video_d_top {
    padding-top: 70px;
    background-color: var(--white-color);
    z-index: 1;
}

.video_d_top .article_top_left {
    width: 100%;
    padding: 0;
}

.video_title {
    width: 100%;
}

.video_title h2 {
    flex: 1;
    margin-right: 50px;
    margin-top: 0;
}

.video_d_right {
    display: flex;
    align-items: center;
    order: 2;
}

.v_share_button {
    display: flex;
    padding: 16px 24px;
    margin-right: 16px;
    align-items: center;
    border-radius: 8px;
    border: 1px solid rgba(0, 0, 0, 0.20);
    cursor: pointer;
}

.v_share_button i {
    width: 20px;
    height: 20px;
    margin-left: 16px;
    background-repeat: no-repeat;
    background-image: url(../images/video_share_back.svg);
}

.v_share_button,
.video_back {
    color: var(--dark-color);
    font-size: 16px;
    font-style: normal;
    font-weight: 400;
    transition: all .3s;
}

.video_back {
    display: flex;
    align-items: center;
    padding: 16px 24px;
    align-items: center;
    border-radius: 8px;
    border: 1px solid rgba(0, 0, 0, 0.20);
}

.video_back i {
    width: 20px;
    height: 20px;
    margin-left: 16px;
    background-image: url(../images/video_back.svg);
    background-repeat: no-repeat;
}

.video_share_box {
    width: 305px;
}

.video_share_box .news-details-content-share {
    padding-top: 20px;
}

.video_share_box .news-details-content-share-item {
    background-color: #F8F9FB;
}

.video_share_box .news-details-content-share-item:hover {
    background-color: var(--main-color);
}

.video_share_box .share_button {
    margin-top: 10px;
    justify-content: center;
}

.v_share_button:hover,
.video_back:hover {
    border-color: var(--main-color);
    background-color: var(--main-color);
    color: var(--white-color);
}

.v_share_button:hover i {
    background-image: url(../images/video_share_wback.svg);
}

.video_back:hover i {
    background-image: url(../images/video_back_w.svg);
}

.video_text_01 {
    padding-top: 24px;
    color: #666;
    font-size: 18px;
    font-style: normal;
    font-weight: 400;
    line-height: 28px;
}

.video-player {
    position: relative;
    margin-top: 40px;
    margin-bottom: 68px;

    border-radius: 8px;
    overflow: hidden;
}

.video-player video {
    width: 100%;
    height: 100%;
    max-height: 810px;
    display: block;
    object-fit: cover;
}

.video-player video::-webkit-media-controls-start-playback-button {
    display: none !important;
    -webkit-appearance: none;
}

/* 隐藏播放过程中的中心遮罩播放按钮（关键） */
.video-player video::-webkit-media-controls-overlay-play-button {
    display: none !important;
    -webkit-appearance: none;
}

.center-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    justify-content: center;
    align-items: center;
    /* pointer-events: none; */
    transition: opacity 0.2s;
    z-index: 10;

}

.center-overlay .center-btn {
    position: relative;
    width: 128px;
    height: 128px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 128px;
    background-image: url(../images/cjyy_play.svg);
    background-repeat: no-repeat;
    background-size: contain;
    /* border: 1px solid #FFF;
background: rgba(255, 255, 255, 0.60);
backdrop-filter: blur(18.28571319580078px); */
    cursor: pointer;
}

.center-overlay .center-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 115%;
    height: 115%;
    background-color: rgba(255, 255, 255, 0.25);
    border-radius: 50%;
    cursor: pointer;
    transition: opacity .3s ease;
    transform: translate(-50%, -50%) scale(1);
    opacity: 0;
    /* 默认隐藏 */
    z-index: -1;
}

.center-overlay .center-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 150%;
    height: 150%;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    cursor: pointer;
    transition: opacity .3s ease;
    transform: translate(-50%, -50%) scale(1);
    opacity: 0;
    z-index: -1;
}

/* hover 时才显示并执行动画 */
.center-overlay .center-btn:hover::before {
    opacity: 1;
    /* 显示 */
    animation: playButtonBreathe2 2s infinite ease-in-out;
    /* 触发动画 */
}

.center-overlay .center-btn:hover::after {
    opacity: 1;
    /* 显示 */
    animation: playButtonBreathe2 2s infinite ease-in-out;
}

@keyframes playButtonBreathe2 {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0;
    }

    50% {
        transform: translate(-50%, -50%) scale(1.3);
        opacity: 1;
    }

    100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0;
    }
}

.center-overlay .icon-play {
    display: block;
    width: 45px;
    height: 45px;
    /* background-image: url(../images/video_play.svg); */
    background-repeat: no-repeat;
    background-size: contain;
    background-position: center;
}

/* 新增  */
/* 错误提示样式 */
.error-message {
    display: none;
    color: #fff;
    background: rgba(255, 0, 0, 0.7);
    padding: 10px 20px;
    border-radius: 4px;
    font-size: 14px;
    text-align: center;
    position: absolute;
    z-index: 10;
}

/* --- 核心交互逻辑控制 --- */

/* 播放时：遮罩层透明且不可点击，让点击穿透到视频原生层 */
.video-container.is-playing .center-overlay {
    opacity: 0;
    /* pointer-events: none; */
}

/* 暂停时：遮罩层显示且拦截点击 */
.video-container.is-paused .center-overlay {
    opacity: 1;
    pointer-events: auto;
}

.video-container.has-error .center-overlay {
    display: none;
}

.video-container.has-error .error-message {
    display: block;
}

/* end */
.v_hidden {
    display: none !important;
}

.intro-container {
    position: relative;
}

.intro-content {
    overflow: hidden;
    transition: max-height 0.4s ease-in-out;
    max-height: calc(1.6 * 16px * 5);
}

.intro-container.expanded .intro-content {
    max-height: inherit;
}

.intro-mask {
    position: absolute;
    bottom: 54px;
    left: 0;
    width: 100%;
    height: 58px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.00) 0%, #FFF 100%);
    pointer-events: none;
    transition: opacity 0.3s;
}

.intro-container.expanded .intro-mask {
    opacity: 0;
}

.intro-content {
    margin-top: 16px;
}

.intro-content p {
    margin-bottom: 16px;
    color: #666;
    font-family: "Microsoft YaHei";
    font-size: 18px;
    font-style: normal;
    font-weight: 400;
    line-height: 28px;
}

.intro-content img {
    display: block;
    max-width: 100%;
    width: auto !important;
    height: auto !important;
    border-radius: 4px;
    margin: 0 auto;
    margin-bottom: 30px;
}

.toggle-btn {
    display: flex;
    align-items: center;
    margin-top: 30px;
    color: var(--main-color);
    cursor: pointer;
    font-weight: 400;
    font-size: 18px;
    user-select: none;
}

.toggle-btn:hover {
    cursor: pointer;
}

.toggle-btn i {
    display: inline-block;
    margin-left: 8px;
    width: 24px;
    height: 24px;
    background-image: url(../images/up_down.svg);
    background-repeat: no-repeat;
    transition: transform 0.3s;
}

.intro-container.expanded .toggle-btn i {
    transform: rotate(180deg);
}

.content-section {
    padding-bottom: 68px;
    border-bottom: 1px solid rgba(51, 51, 51, 0.1);
}

.content-section .big_title {
    color: var(--dark-color);
    font-weight: 700;
    line-height: 1.5;
}

.tj_video_swiper .text {
    color: #949494;
}

.tj_video_swiper .text .time {
    background-image: url(../images/cjyy_time_grey.svg);
}

.position_video {
    padding: 88px 0;
    background-color: #F8F9FB;
}

.position_video .pto_d_title {
    color: var(--main-color);
    font-weight: 700;
    line-height: 1.5;
}

.position_video .page_button {
    margin-top: 20px;
}

@media (max-width: 1279px) {

    .center-overlay .center-btn {
        width: 100px;
        height: 100px;
        border-radius: 100px;
    }

}

@media (max-width: 991px) {
    .center-overlay {
        /* display: none; */
    }

    .video_d_top .video_d_right {
        display: none !important;
    }

    .video_d_top .news-details-content-share {
        padding-top: 20px;
    }

    .video_d_top .mo_show {
        display: block !important;
    }

    .center-overlay .center-btn {
        width: 80px;
        height: 80px;
        border-radius: 80px;
    }

    .center-overlay .icon-play {
        width: 30px;
        height: 30px;

    }
}

@media (max-width: 767px) {
    .video_d_top {
        padding-top: 50px;
    }

    .video_d_top .video_title {
        flex-flow: column;
    }

    .video_d_top .video_title h2 {
        margin-top: 0;
        flex: 1;
        width: 100%;
        margin-right: 0;
    }

    .video_d_right {
        order: inherit;
    }

    .center-overlay .center-btn {
        width: 58px;
        height: 58px;
        border-radius: 58px;
    }

    .center-overlay .icon-play {
        width: 20px;
        height: 25px;
        background-size: contain;
    }

    .content-section {
        padding-top: 38px;
        padding-bottom: 38px;
    }

    .position_video {
        padding: 50px 0;
    }

    .video-player video {
        min-height: 250px;
    }
}

/* index more */
.index_add_more .index_more:nth-child(2) {
    margin-left: 16px;
}

.index_add_more .index_more span:first-child {
    width: 22px;
}

.index_add_more .index_more span:nth-child(2) {
    margin-right: 0;
}

.index_add_more .index_more span:first-child img:nth-child(2) {
    display: none;
}

.index_add_more .index_more a:hover span:first-child img:nth-child(1) {
    display: none;
}

.index_add_more .index_more a:hover span:first-child img:nth-child(2) {
    display: block;
}

@media (max-width: 767px) {

    .index_add_more {
        margin-top: 30px;
        justify-content: center;
    }

}

/* 筛选下拉优化 */
.year_select_box>.span input {
    width: calc(100% - 16px);
}

/* 重磅产品 */
:root {
    --transition-speed: 0.6s;
}

.flag_swiper {
    width: 100%;
    overflow: visible !important;
}

.flag_swiper .swiper-slide {
    position: relative;
    margin-right: 32px;
    width: var(--card-collapsed-w);
    height: var(--container-h);
    border-radius: 8px;
    /* background-color: var(--white-color); */
    user-select: none;
    /* transition: background-color .4s; */
    cursor: pointer;
    overflow: hidden;
}

.flag_swiper .swiper-slide.m-active {
    /* width: var(--card-active-w) !important; */
    width: var(--card-active-w);
    background-color: transparent;
    cursor: default;
    z-index: 1;
}

.slide-content {
    position: relative;
    height: 100%;
    width: 100%;
    height: var(--container-h);

    z-index: 1;
}

.m-active .slide-content {
    width: var(--card-active-w);
    transition: width var(--transition-speed) ease,
        transform var(--transition-speed) ease;
    /* transition: width var(--transition-speed) ease,
        transform var(--transition-speed) ease,
        background var(--transition-speed) ease; */
}

/* 隐藏类 */
.is-hidden {
    display: none !important;
}
/* .flag_img {
    z-index: 3;
} */
.flag_swiper .swiper-slide::before {
    content: "";
    position: absolute;
    right: 20px;
    top: 20px;
    width: 12px;
    height: 12px;
    background-image: url(../images/red_icon01.svg);
    background-repeat: no-repeat;
    background-size: 100%;
    background-position: center;
    border-radius: 50%;
    opacity: 0;
    transition: opacity s;
    z-index: 2;
}
.flag_swiper .swiper-slide:hover::before {
    opacity: 1;
}
.flag_swiper .m-active:hover::before {
    opacity: 0;
}
.flag_img_hover span {
    position: relative;
}

.flag_img_hover span a {
    display: block;
}
/* .flag_img_hover img,
.flag_img img{
    user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  
} */
.flag_img_hover span::before {
    content: "";
    position: absolute;
    right: 20px;
    top: 20px;
    width: 12px;
    height: 12px;
    background-image: url(../images/red_icon01.svg);
    background-repeat: no-repeat;
    background-size: 100%;
    background-position: center;
    border-radius: 50%;
    opacity: 0;
    transition: opacity .3s;
}
.swiper-slide:hover .flag_img_hover span::before {
    opacity: 1;
}


/* 联系我们弹出 */
#modalcverlay,
#modalcverlay .modal-container {
    max-width: 500px;
}
 
.contact_eject {
    padding-top: 30px;
}

.contact_eject .t {
    padding-bottom: 8px;
    color: var(--main-color);
    font-style: normal;
    font-weight: 700;
    line-height: 28px;
}

.contact_eject ul li {
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding-bottom: 16px;
    margin-bottom: 16px;
}

.contact_eject ul li:last-child {
    padding-bottom: 0 !important;
    margin-bottom: 0 !important;
    border-bottom: none;

}

.contact_eject .contact_box {
    opacity: 1;
    max-height: inherit;
}

.contact_eject .contact_box p {
    padding-bottom: 6px;
    font-size: 16px;
    line-height: 26px;
}

.contact_eject .contact_box p img {
    width: 20px;
    margin-top: 4px;
    margin-right: 8px;
}

.contact_eject .contact_box p:last-child {
    padding-bottom: 0;
}
@media (max-width: 1180px) {

.m-active .slide-content {
    width: 100%;
   
}

}
@media (max-width: 767px) {

    .flag_img_hover span::before {
        right: 8%;
        top: 5%;
    }

}

@media (max-width: 767px) {
    .flag_swiper .swiper-slide {
        height: 560px;
    }

    .slide-content {
        height: 560px;
    }

    .flag_swiper .m-active:after {
        height: 56%;
        border-radius: 8px;
    }

    .flag_img {
        transition: all 0.3s ease;
    }

    .flag_swiper .m-active .card-old {
        display: none;
        overflow: hidden;
    }

    .flag_img_hover span {
        display: block;
        width: 300px;
        margin: 0 auto;
    }

    .card_title {
        color: var(--white-color);
    }

    .controls-wrapper {
        width: 100%;
        justify-content: center;
    }

    .nav-btn-float {
        position: relative;
        top: inherit;
        transform: inherit;
        margin: 0;
        left: inherit !important;
        right: inherit !important;
    }

    .nav-btn-float:hover {
        transform: translateY(0) scale(1);
    }



}
/* 用户服务 */

.video_section {
    margin-top: 30px;
}
.level1-nav {
display: flex;
flex-wrap: wrap;
margin-bottom: 25px;
/* padding-bottom: 20px; */
margin-left: -8px;
margin-right: -8px;
}

.l1-item {
padding: 8px 24px;
margin: 8px;
background: #f1f1f1;
border-radius: 20px;
cursor: pointer;
transition: all 0.3s;
font-size: 18px;
color: #555;
}

.l1-item.active {
background: var(--main-color);
color: #fff;
}
/* 视频列表网格 */
.video_list {
display: flex;
flex-wrap: wrap;
margin-left: -20px;
margin-right: -20px;
}
.news-item {
    transition: transform 0.3s; 
    opacity: 0; 
    transform: translateY(10px); 
}

.news-item.show {
    animation: cardEntrance 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}
/* 入场动画定义 */
@keyframes cardEntrance {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
@media (max-width: 767px) {
.l1-item {
    padding: 8px;
    width: calc(33.33% - 16px);
    text-align: center;
}
.video_list {
    margin-left: -10px;
    margin-right: -10px;
}

}