.top-heading {
    color: #838383;
    font-size: 14px;
    margin: 1vw 0;
}



.top-heading a,
.top-heading span {
    color: #838383;
}

.top-heading i {
    margin: auto 15px;
}

.top-heading i:last-child {
    display: none;
}

.top-heading a:nth-last-child(2) {
    color: #20222A;
}

.page-hero-ct h1 {
    margin-bottom: 0;
}

.power-system {
    position: relative;
    text-align: center;
    background: rgba(0, 0, 0, 1);
}

.power-system .page-title {
    padding-top: 6vw;
    color: #fff;
    white-space: unset;
}



video {
    width: 100%;
    display: block;
    -webkit-mask-image:
        linear-gradient(to bottom, transparent 0, #000 18%, #000 92%, transparent 100%),
        linear-gradient(to right, transparent 0, #000 18%, #000 92%, transparent 100%);
    mask-image:
        linear-gradient(to bottom, transparent 0, #000 18%, #000 92%, transparent 100%),
        linear-gradient(to right, transparent 0, #000 18%, #000 92%, transparent 100%);
    -webkit-mask-composite: intersect;
    mask-composite: intersect;
    margin: auto;
}

/* ---------- 图片滑动区 ---------- */
.power-system .slides {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 8;
}

.power-system .slides img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* 图片覆盖容器，保持比例裁切 */
    opacity: 0;
}

.power-system .slides img.active {
    opacity: 1;
    z-index: 1;
}

.power-system .dot {

    position: absolute;
    z-index: 2;
    opacity: 0;
    background: none;
    font-size: 1.5vw;

}

.main-video {
    width: 60%;
    margin: auto;
}

.reset-btn {
    cursor: pointer;
    bottom: 10%;
    position: absolute;
    left: 50%;
    z-index: 10;
    padding: 10px 40px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    color: #FFF;
    border: 1px solid #c5c8cc;
    border-radius: 50px;
    opacity: 0;
    transform: translateX(-50%);
}

.power-system .dot.active {
    opacity: 1;

}

.power-system .dot:nth-child(1) {
    left: 28%;
    top: 53%;
    color: #ff9900;
    text-shadow:
        0 0 6px #633b00,
        0 0 12px #ff9900,
        0 0 20px rgba(255, 153, 0, 0.2),
        0 0 30px rgba(255, 153, 0.1);
}

.power-system .dot:nth-child(2) {
    left: 47%;
    top: 55%;
    color: #4dd3ff;
    text-shadow:
        0 0 6px #005572,
        0 0 12px #0099cc,
        0 0 20px rgba(67, 156, 228, 0.8),
        0 0 30px rgba(67, 156, 228, 0.6);
}

.power-system .dot:nth-child(3) {
    left: 64.8%;
    top: 55%;
    color: #4dd3ff;
    text-shadow:
        0 0 6px #005572,
        0 0 12px #0099cc,
        0 0 20px rgba(67, 156, 228, 0.8),
        0 0 30px rgba(67, 156, 228, 0.6);
}

.power-system .en-dots .dot:nth-child(1) {
    left: 21%;

}

.power-system .en-dots .dot:nth-child(2) {
    left: 47%;
    top: 55%;

}

.power-system .en-dots .dot:nth-child(3) {
    left: 58.8%;

}

.panel-heading {
    padding-bottom: 6vw;
    display: flex;
    align-items: center;
    background-color: #FAF9F9;
}

.panel-heading a {
    color: #838383;
    margin-left: 30px;
    display: flex;
}

.panel-heading a:hover {
    color: #636363;
}

.panel-heading a img {
    margin-right: 10px;
}

.product-list {
    margin: 4vw auto;
}

.product-list .swiper-wrapper {
    height: auto;
}

.product-title {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
}

.product-title img {
    width: 100%;
}

.product-title h2 {
    position: absolute;
    left: 5%;
    top: 50%;
    font-size: 36px;
    color: #fff;
    transform: translateY(-50%);
}

.product-li a {
    display: block;
    background-color: rgba(171, 182, 199, 0.17);
    border-radius: 20px;
    overflow: hidden;
    text-align: center;
    padding: 2vw;
    position: relative;
}

.swiper {
    padding-bottom: 20px;
}

.product-li a:hover {
    background-color: #FFF;
    transform: translateY(-4px) !important;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
}

.product-li a h2,
.product-li-one a .special .t h2 {
    color: #20222A;
    font-size: 1.22vw;
    margin-bottom: 15px;
}

.product-li a h2:first-child {
    margin-bottom: 5px;
}

.en .product-li a h2:first-child {
    font-weight: 500;
    font-size: 1.12vw;
}

.product-li a span,
.product-li-one a .special .t span {
    color: #838383;
    font-size: 0.8vw;
    display: flex;
    justify-content: center;
}

.product-li a span::after {
    background: url(/static/images/v.svg) center no-repeat;
    background-size: 100%;
    content: " ";
    display: block;
    width: 0.4vw;
    margin-left: 1vw;
    aspect-ratio: 1 / 1;
}

.product-li a img {
    width: 80%;
    margin: auto;
}

/* 阴影 */
.product-li a:after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 10%;
    transform: translateX(-50%);
    width: 50%;
    height: 1.2vw;
    background: #ABB6C7;
    opacity: 0.8;
    filter: blur(17px);
    border-radius: 50%;
}

.product-li-one a {
    display: block;
    background-color: rgba(171, 182, 199, 0.17);
    border-radius: 20px;
    overflow: hidden;
    text-align: center;
    padding: 2vw;
    position: relative;
}

.product-li-one a:hover {
    background-color: #FFF;
    transform: translateY(-4px) !important;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
}

.product-li-one a .special {
    width: 55%;
    margin: auto;
    display: flex;
    align-items: center;
}

.product-li-one a .special .i {
    margin: 1vw;
}

.product-li-one a .special .i img {
    width: 80%;
    margin: auto;
}

.product-li-one a .special .t {
    text-align: left;
}

.container {

    background: #fff;
    padding: 40px;
    border-radius: 20px;
    position: relative;
}

.title {
    font-size: 32px;
    font-weight: 600;
    color: #1a1a1a;
    position: absolute;
    top: 30px;
}

.main-wrap {
    border-radius: 10px;
    background-color: rgba(171, 182, 199, 0.17);
    padding: 40px;
    padding-top: 110px;
    position: relative;

}

.main-wrap-grid {
    display: grid;
    grid-template-columns: 30% 1fr 20%;
    gap: 30px;
    align-items: center;
    position: relative;
}



.main-wrap-engine {
    display: grid;
    grid-template-columns: 42% 1fr;
    padding-bottom: 0;
}


.param-card {
    background: rgba(255, 255, 255, 0.48);
    border-radius: 10px;
    padding: 10px 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.param-table {
    width: 100%;
    border-collapse: collapse;
}

.param-table td,
.param-table th {
    padding: 15px 0;
    font-size: 13px;
    color: #333;
    border-bottom: 1px solid #eee;
}

.param-table th:first-child {
    text-align: left;
}

.param-table th:last-child,
.param-table td:last-child {
    text-align: right;
}

.param-table tr:last-child td {
    border-bottom: none;
}

.param-table td:first-child {
    color: #838383;
}

/* 中间主总成图 */
.center-main {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.main-engine-img {
    width: 70%;
}

.center-main:after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 0%;
    transform: translateX(-50%);
    width: 50%;
    height: 2vw;
    background: rgba(0, 0, 0, 0.25);
    filter: blur(12px);
    border-radius: 50%;
}


.bottom-part {
    display: flex;
    justify-content: center;
    flex-direction: column;
    gap: 3vw;
    position: relative;
}

.main-wrap-dotted {
    padding-bottom: 5vw;
}

.bottom-part::after {
    content: "";
    position: absolute;
    width: 6vw;
    overflow: hidden;
    height: 1px;
    background-image: linear-gradient(to right, #939393 0 3px, transparent 2px 100%);
    background-size: 4px 100%;
    left: -6vw;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
}



.bottom-part::before {
    content: "";
    position: absolute;
    width: 1px;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 1;
    background-image: linear-gradient(to bottom, #939393 0 2px, transparent 2px 100%);
    background-size: 1px 4px;
}

.sub-item {
    text-align: center;
    position: relative;
}

.sub-item a {
    color: #535353;
    border: 1px solid #c0c0c0;
    padding: 5px 25px;
    border-radius: 50px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    background: rgba(0, 0, 0, 0.025);
}

.sub-item a:hover {
    background: rgba(0, 0, 0, 0.075);
}

.sub-item::before {
    content: "";
    position: absolute;
    width: 2vw;
    height: 1px;
    background-image: linear-gradient(to right, #939393 0 3px, transparent 2px 100%);
    background-size: 4px 100%;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    z-index: 1;
}

.sub-item::after {
    content: "";
    position: absolute;
    left: -1px;
    width: 2px;
    height: 50%;
    background-color: #f1f3f6;
    z-index: 2;
}

.sub-item:first-child::after {
    top: 0;
}

.sub-item:last-child::after {
    bottom: 0;
}

.sub-item i {
    display: inline-block;
    border: 2px solid #939393;
    background-color: rgba(255, 255, 255, 1);
    border-radius: 50%;
    padding: 3px;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    left: -8px;
    z-index: 3;

}

.sub-item i::after {
    content: "";
    display: block;
    background-color: #939393;
    width: 6px;
    height: 6px;
    border-radius: 50%;

}

.sub-img {
    width: 55%;
    max-width: 400px;
    margin: auto;
}

.sub-title {
    font-size: 18px;
    color: #1a1a1a;
}

.right-desc {

    display: grid;
    gap: 1.5rem;
    margin-top: 5vw;
    padding: 16px 2vw;
    background-color: #fafafa;
    border-radius: 15px;
    width: 100%;
    grid-column: 1 / -1
}

.right-desc.it6,
.right-desc.it5,
.right-desc.it4 {
    grid-template-columns: repeat(2, 1fr);
}

.right-desc.it3 {
    grid-template-columns: repeat(3, 1fr);
}




.right-desc .desc-item {
    padding-top: 1rem;
    padding-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.right-desc .desc-item.h {
    display: flex;
    gap: 2rem;
    flex-direction: row;
}

.right-desc.it6 .desc-item,
.right-desc.it5 .desc-item,
.right-desc.it4 .desc-item {
    border-bottom: 1px solid #eee;
}

.right-desc.it6 .desc-item:last-child,
.right-desc.it6 .desc-item:nth-last-child(2),
.right-desc.it5 .desc-item:last-child,
.right-desc.it4 .desc-item:last-child,
.right-desc.it4 .desc-item:nth-last-child(2) {
    border-bottom: none;
}

.desc-item h4 {
    font-size: 17px;
    font-weight: normal;
    color: #212121;
}

.desc-item p {
    font-size: max(13px, 0.8vw);
    color: #616161;
}

.desc-item b {
    font-size: 1.13vw;
}

.desc-item .grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

@media (max-width: 1224px) {
    .page-title {
        font-size: 34px;
    }

    .product-title h2 {
        font-size: 27px;
    }

    .en .product-li a h2:first-child {
        font-size: 1.23vw;
    }
}


@media (max-width: 1024px) {

    .product-title {
        height: 90px;
        border-radius: 20px;
        background: #323232;
    }

    .en .product-li a h2:first-child {
        font-size: 16px;
    }

    .en .page-title {
        font-size: 24px;
    }

    .product-title img {
        display: none;
    }

    .page-hero-ct {
        padding-top: 60px;
    }

    .product-title h2 {

        font-size: 20px
    }

    .en .product-title h2 {
        font-size: 18px
    }

    .product-li-one a .special {
        width: 100%;
        flex-direction: column;
    }

    .product-li-one a .special .t {
        text-align: center;
    }

    .product-li a h2,
    .product-li-one a .special .t h2 {
        margin-top: 25px;
    }

    .container {

        padding: 5px;
    }

    .main-wrap {
        padding: 15px;
    }

    .main-wrap-grid,
    .main-wrap-engine {
        display: flex;

        gap: 15px;
        flex-direction: column;
    }

    .main-wrap-dotted {
        padding-bottom: 5vw;
    }

    .title {
        position: static;
        font-size: 1.6rem;
        width: 100%;
        margin-bottom: 20px;
    }

    .param-card,
    .right-desc {
        width: 100%;
    }

    .main-engine-img {
        width: 100%;
    }

    .right-desc {
        display: flex;
        flex-direction: column;
    }

    .desc-item b {
        font-size: 20px;
    }

    .right-desc .desc-item:after {
        display: none;
    }

    .right-desc .desc-item {
        padding: 1.5rem;
        padding-top: 0;
        border-bottom: 1px solid #e1e1e1;
    }

    .right-desc.it6 .desc-item:nth-last-child(2),
    .right-desc.it4 .desc-item:nth-last-child(2) {
        border-bottom: 1px solid #e1e1e1;
    }

    .right-desc .desc-item:last-child {
        border-bottom: none;
    }

    .sub-title {
        font-size: 14px;
        color: #1a1a1a;
        text-align: center;
        margin-top: 30px;
    }

    .sub-img {
        width: 100%;
        max-width: 200px;
        margin: auto;
    }

    .bottom-part {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
        position: relative;
        justify-content: center;
        margin-top: 30px;
    }

    .sub-item {
        width: 100%;
        padding-top: 0;
        padding-top: 20%;
        text-align: center;
    }

    .main-wrap-dotted::before {
        display: none;
    }

    .bottom-part::before {
        position: absolute;
        height: 1px;
        width: 100%;
        background-image: linear-gradient(to right, #939393 0 3px, transparent 2px 100%);
        background-size: 4px 100%;
    }

    .bottom-part::after {
        background-image: linear-gradient(to bottom, #939393 0 2px, transparent 2px 100%);
        background-size: 1px 4px;
        height: 60px;
        width: 1px;
        left: 50%;
        top: -30px;
    }

    .product-li a span,
    .product-li-one a .special .t span {
        font-size: 12px;
    }

    .product-li a span::after {
        width: 6px;
        margin-left: 10px;
    }

    .sub-item i {

        top: -8px;
        left: 50%;
        transform: translateX(-50%);
    }

    .sub-item::before {
        width: 1px;
        height: 15%;
        background-image: linear-gradient(to bottom, #939393 0 2px, transparent 2px 100%);
        background-size: 1px 4px;
        top: 0;
        left: 50%;
        transform: translateX(-50%);
    }

    .sub-item::after {
        content: "";
        position: absolute;
        left: 0;
        top: -1px;
        width: 50%;
        height: 2px;
        background-color: #f1f3f6;
    }

    .sub-item:last-child::after {
        right: 0;
        left: auto;
    }
}

@media (max-width: 768px) {
    .power-system .slides {
        aspect-ratio: 8 / 16;
    }

    .power-system .dot:nth-child(1) {
        left: 54%;
        top: 31%;
    }

    .power-system .dot:nth-child(2) {
        left: 51.8%;
        top: 67%;
    }

    .power-system .dot:nth-child(3) {
        left: 59%;
        top: 49%;
    }

    .product-li a h2,
    .product-li-one a .special .t h2 {
        color: #20222A;
        font-size: 19px;
        margin-top: 15px;
        margin-bottom: 15px;
    }

    .panel-heading a {
        font-size: 12px;
    }

    .power-system .page-title {
        font-size: 22px;
    }
}