/* 产品展示区域样式 */
.product-showcase-section {
    padding-top: calc((80/1918) * 100vw) !important;
    padding-bottom: calc((100/1918) * 100vw) !important;
    position: relative;
    background-image: url('/images/cxximage/bg1.png');
    background-size: contain;
    background-position: bottom center;
    background-repeat: no-repeat;
}
.product-showcase-section > * {
    position: relative;
    z-index: 1;
}
.product-showcase-title {
    text-align: center;
    font-family: var(--font-heading);
    font-size: calc((48/1918) * 100vw);
    font-weight: bold;
    color: #000;
    margin-bottom: calc((60/1918) * 100vw);
    text-transform: uppercase;
    letter-spacing: 2px;
}
.product-swiper-container {
    width: 100%;
    max-width: 1680px;
    margin: 0 auto;
    padding: 0 calc((40/1918) * 100vw);
    box-sizing: border-box;
    position: relative;
}
.product-swiper-wrapper {
    display: flex;
    gap: calc((30/1918) * 100vw);
    flex-wrap: nowrap;
    overflow-x: auto;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
.product-swiper-wrapper::-webkit-scrollbar {
    display: none;
}
.product-card {
    flex: 0 0 calc((100% - (90/1918) * 100vw) / 4);
    position: relative;
    background: transparent;
    border: 1px solid #e0e0e0;
    border-radius: 0;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    height: calc((600/1918) * 100vw);
    min-height: calc((600/1918) * 100vw);
    max-height: calc((600/1918) * 100vw);
    min-width: 0;
    box-sizing: border-box;
}
.product-card::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 0;
    background: var(--brand-primary);
    transition: height 0.4s ease;
    z-index: 0;
}
.product-card:hover::before {
    height: 100%;
}
.product-card:hover {
    box-shadow: 0 4px 12px rgba(80, 162, 111, 0.2);
}
.product-card .txt,
.product-card .pic {
    position: relative;
    z-index: 1;
    transition: background 0.4s ease 0.1s;
}
.product-card:hover .txt {
    background: transparent;
}
.product-card:hover .txt .h,
.product-card:hover .txt .p {
    color: #fff;
    transition: color 0.3s ease 0.2s;
}
.product-card:hover .pic {
    background: transparent;
}
.product-card .txt {
    padding: calc((40/1918) * 100vw);
    flex: 1;
    display: flex;
    flex-direction: column;
    background: transparent;
    transition: background 0.3s ease;
}
.product-card .txt .title-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: calc((12/1918) * 100vw);
}
.product-card .txt .h {
    font-size: calc((28/1918) * 100vw);
    font-weight: bold;
    color: #000;
    line-height: 1.3;
    transition: color 0.3s ease;
    flex: 1;
}
.product-card .icon-wrapper {
    position: relative;
    width: calc((50/1918) * 100vw);
    height: calc((50/1918) * 100vw);
    flex-shrink: 0;
    margin-left: calc((15/1918) * 100vw);
}
.product-card .icon {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.3s ease;
}
.product-card .icon.comm {
    opacity: 1;
    z-index: 1;
}
.product-card .icon.act {
    opacity: 0;
    z-index: 2;
}
.product-card:hover .icon.comm {
    opacity: 0;
}
.product-card:hover .icon.act {
    opacity: 1;
}
.product-card .icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.product-card .txt .p {
    font-size: calc((14/1918) * 100vw);
    color: #999;
    margin-bottom: calc((24/1918) * 100vw);
    line-height: 1.5;
    transition: color 0.3s ease;
}
.product-card .btn {
    position: absolute;
    top: 45%;
    left: calc((40/1918) * 100vw);
    transform: translateY(-50%);
    height: 40px;
    padding: 0 20px;
    border-radius: 20px;
    font-size: 16px;
    color: #fff;
    background-color: var(--brand-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    width: fit-content;
    z-index: 10;
    margin: 0;
}
.product-card .btn i {
    width: 0;
    height: 0;
    border-left: 6px solid #fff;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    transition: all 0.3s ease;
}
.product-card:hover .btn {
    opacity: 1;
    visibility: visible;
    background-color: transparent;
    color: #fff;
    border: 1px solid #fff;
}
.product-card:hover .btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
    color: #fff;
}
.product-card:hover .btn:hover i {
    border-left-color: #fff;
}
.product-card:hover .btn i {
    border-left-color: #fff;
}
.product-card .pic {
    width: 100%;
    height: calc((280/1918) * 100vw);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    transition: all 0.4s ease;
    position: relative;
}
.product-card .pic img {
    width: 70%;
    height: 70%;
    object-fit: contain;
    transition: all 0.4s ease;
    position: relative;
    left: 0;
}
.product-card:hover .pic img {
    width: 65%;
    height: 65%;
    left: calc((50/1918) * 100vw);
}
/* 导航箭头 */
.product-nav-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: calc((50/1918) * 100vw);
    height: calc((50/1918) * 100vw);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid #e0e0e0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}
.product-nav-arrow:hover {
    background: var(--brand-primary);
    border-color: var(--brand-primary);
}
.product-nav-arrow:hover svg {
    stroke: #fff;
}
.product-nav-arrow.prev {
    left: calc((-60/1918) * 100vw);
}
.product-nav-arrow.next {
    right: calc((-60/1918) * 100vw);
}
.product-nav-arrow svg {
    width: 20px;
    height: 20px;
    stroke: #666;
    transition: stroke 0.3s ease;
}
@media (max-width: 1100px) {
    .product-showcase-title {
        font-size: 36px;
    }
    .product-nav-arrow {
        display: none;
    }
    .product-swiper-wrapper {
        flex-wrap: wrap;
        gap: 20px;
    }
    .product-card {
        min-width: calc(50% - 10px);
        height: 450px;
        min-height: 450px;
        max-height: 450px;
    }
    /* 平板和手机端显示产品卡片按钮 - 统一风格并居中 */
    .product-card .btn {
        position: static;
        top: auto;
        left: auto;
        transform: none;
        opacity: 1 !important;
        visibility: visible !important;
        margin: 15px auto 0 auto;
        width: auto;
        min-width: 140px;
        height: 40px;
        padding: 0 24px;
        font-size: 15px;
        font-weight: 500;
        background-color: var(--brand-primary);
        color: #fff;
        border: none;
        border-radius: 20px;
        display: flex;
        align-items: center;
        justify-content: center;
        align-self: center;
        box-shadow: 0 2px 8px rgba(80, 162, 111, 0.2);
        transition: all 0.3s ease;
    }
    .product-card .btn:active {
        transform: scale(0.98);
        box-shadow: 0 1px 4px rgba(80, 162, 111, 0.3);
    }
    /* 确保按钮在txt区域底部显示 */
    .product-card .txt {
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        align-items: center;
    }
}
@media (max-width: 768px) {
    .product-showcase-section {
        padding-top: 40px !important;
        padding-bottom: 60px !important;
    }
    .product-showcase-title {
        font-size: 28px;
        margin-bottom: 30px;
    }
    .product-swiper-container {
        padding: 0 20px;
        width: 100%;
        max-width: 100%;
        overflow: visible;
    }
    .product-swiper-wrapper {
        display: flex !important;
        flex-wrap: wrap !important;
        gap: 20px !important;
        overflow-x: visible !important;
        overflow-y: visible !important;
        transform: none !important;
        width: 100% !important;
    }
    .product-swiper-wrapper .swiper-slide {
        width: 100% !important;
        flex: 0 0 100% !important;
        margin: 0 !important;
    }
    .product-card {
        flex: 0 0 100% !important;
        min-width: 100% !important;
        max-width: 100% !important;
        width: 100% !important;
        height: 400px;
        min-height: 400px;
        max-height: 400px;
        transform: none !important;
        margin: 0 !important;
    }
    .product-card .txt .h {
        font-size: 22px;
    }
    .product-card .txt .p {
        font-size: 13px;
    }
    /* 手机端显示产品卡片按钮 - 统一风格并居中 */
    .product-card .btn {
        position: static;
        top: auto;
        left: auto;
        transform: none;
        opacity: 1 !important;
        visibility: visible !important;
        margin: 15px auto 20px auto;
        width: auto;
        min-width: 100px;
        height: 36px;
        padding: 0 20px;
        font-size: 14px;
        font-weight: 500;
        background-color: var(--brand-primary);
        color: #fff;
        border: none;
        border-radius: 18px;
        display: flex;
        align-items: center;
        justify-content: center;
        align-self: center;
        box-shadow: 0 2px 8px rgba(80, 162, 111, 0.2);
        transition: all 0.3s ease;
    }
    .product-card .btn:active {
        transform: scale(0.98);
        box-shadow: 0 1px 4px rgba(80, 162, 111, 0.3);
    }
    /* 确保按钮在txt区域底部显示 */
    .product-card .txt {
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        align-items: center;
        padding-bottom: 20px; /* 增加底部内边距，让按钮不贴底 */
    }
    .product-card .txt .btn {
        font-size: 14px;
    }
    .product-card .icon-wrapper {
        width: 40px;
        height: 40px;
        margin-left: 10px;
    }
    .product-card .pic {
        height: 200px;
    }
    .product-card .txt {
        padding: 20px;
    }
    .product-card .txt .title-row {
        margin-bottom: 10px;
    }
}

/* 应用领域区域样式 */
.application-field-section {
    padding-top: calc((80/1918) * 100vw) !important;
    padding-bottom: 0 !important;
    position: relative;
    background-color: #fff;
}
.application-field-title {
    text-align: center;
    font-family: var(--font-heading);
    font-size: calc((48/1918) * 100vw);
    font-weight: bold;
    color: #000;
    margin-bottom: calc((20/1918) * 100vw);
    text-transform: uppercase;
    letter-spacing: 2px;
}
.application-field-description {
    text-align: center;
    font-size: calc((16/1918) * 100vw);
    color: #666;
    margin-bottom: calc((60/1918) * 100vw);
    line-height: 1.6;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}
.application-field-container {
    width: 100%;
    max-width: 1680px;
    margin: 0 auto;
    padding: 0 calc((40/1918) * 100vw);
    box-sizing: border-box;
    position: relative;
}
.application-field-wrapper {
    display: flex;
    gap: calc((30/1918) * 100vw);
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
    width: 100%;
}
.application-field-wrapper::-webkit-scrollbar {
    display: none;
}
.application-field-card {
    flex: 0 0 calc((100% - (90/1918) * 100vw) / 4);
    position: relative;
    background: transparent;
    border: none;
    border-radius: calc((12/1918) * 100vw);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: block;
    height: calc((500/1918) * 100vw);
    min-height: calc((500/1918) * 100vw);
    max-height: calc((500/1918) * 100vw);
    box-sizing: border-box;
}
/* 当有卡片hover时，其他卡片缩小 */
.application-field-wrapper:has(.application-field-card:hover) .application-field-card:not(:hover),
.application-field-wrapper:has(.application-field-card.default-hover) .application-field-card:not(.default-hover) {
    flex: 0 0 calc((100% - (90/1918) * 100vw - calc((500/1918) * 100vw)) / 3);
    min-width: calc((100% - (90/1918) * 100vw - calc((500/1918) * 100vw)) / 3);
}
/* 第一个卡片默认hover状态 - 只使用类控制，不使用:first-child */
.application-field-card.default-hover {
    flex: 0 0 calc((500/1918) * 100vw) !important;
    min-width: calc((500/1918) * 100vw) !important;
    z-index: 5;
}
.application-field-card.default-hover .field-content {
    align-items: flex-start;
}
.application-field-card.default-hover .field-title {
    text-align: left;
}
.application-field-card.default-hover .field-subtitle {
    opacity: 1;
    max-height: 200px;
    margin-bottom: calc((20/1918) * 100vw);
    text-align: left;
}
.application-field-card.default-hover .field-btn {
    opacity: 1;
    visibility: visible;
}
.application-field-card:hover {
    flex: 0 0 calc((500/1918) * 100vw) !important;
    min-width: calc((500/1918) * 100vw) !important;
    z-index: 5;
}
.application-field-card .field-pic {
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: relative;
    border-radius: calc((12/1918) * 100vw);
}
.application-field-card .field-pic img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.application-field-card .field-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: calc((30/1918) * 100vw) calc((25/1918) * 100vw);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.4) 40%, rgba(0, 0, 0, 0.1) 70%, transparent 100%);
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
    border-radius: 0 0 calc((12/1918) * 100vw) calc((12/1918) * 100vw);
}
.application-field-card:hover .field-content {
    align-items: flex-start;
}
.application-field-card .field-title {
    font-size: calc((28/1918) * 100vw);
    font-weight: bold;
    color: #fff;
    margin-bottom: calc((10/1918) * 100vw);
    transition: all 0.4s ease;
    line-height: 1.3;
    text-align: center;
}
.application-field-card:hover .field-title {
    text-align: left;
}
.application-field-card .field-subtitle {
    font-size: calc((14/1918) * 100vw);
    color: #fff;
    line-height: 1.5;
    margin-bottom: calc((20/1918) * 100vw);
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: all 0.4s ease;
    text-align: center;
}
.application-field-card:hover .field-subtitle {
    opacity: 1;
    max-height: 200px;
    margin-bottom: calc((20/1918) * 100vw);
    text-align: left;
}
.application-field-card .field-btn {
    height: calc((40/1918) * 100vw);
    padding: 0 calc((20/1918) * 100vw);
    border-radius: calc((20/1918) * 100vw);
    font-size: calc((14/1918) * 100vw);
    color: #fff;
    background-color: var(--brand-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.4s ease;
    opacity: 0;
    visibility: hidden;
    width: fit-content;
    margin: 0;
}
.application-field-card:hover .field-btn {
    opacity: 1;
    visibility: visible;
}
.application-field-card .field-btn:hover {
    background-color: var(--brand-primary-dark);
}
/* 导航箭头 */
.application-field-nav-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: calc((50/1918) * 100vw);
    height: calc((50/1918) * 100vw);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid #e0e0e0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}
.application-field-nav-arrow:hover {
    background: var(--brand-primary);
    border-color: var(--brand-primary);
}
.application-field-nav-arrow:hover svg {
    stroke: #fff;
}
.application-field-nav-arrow.prev {
    left: calc((-60/1918) * 100vw);
}
.application-field-nav-arrow.next {
    right: calc((-60/1918) * 100vw);
}
.application-field-nav-arrow svg {
    width: 20px;
    height: 20px;
    stroke: #666;
    transition: stroke 0.3s ease;
}
@media (max-width: 1100px) {
    .application-field-title {
        font-size: 36px;
    }
    .application-field-description {
        font-size: 14px;
    }
    .application-field-nav-arrow {
        display: none;
    }
    .application-field-wrapper {
        flex-wrap: wrap;
        gap: 20px;
    }
    .application-field-card {
        flex: 0 0 calc(50% - 10px);
        min-width: calc(50% - 10px);
        height: 450px;
        min-height: 450px;
        max-height: 450px;
        border-radius: 12px;
    }
    .application-field-card:hover {
        flex: 0 0 calc(50% - 10px);
        min-width: calc(50% - 10px);
    }
    .application-field-card .field-pic {
        border-radius: 12px;
    }
    .application-field-card .field-content {
        border-radius: 0 0 12px 12px;
        align-items: center !important; /* 平板端也居中 */
    }
    .application-field-card:hover .field-content {
        align-items: center !important; /* 平板端hover时也保持居中 */
    }
    .application-field-card .field-title {
        text-align: center !important; /* 平板端标题居中 */
    }
    .application-field-card:hover .field-title {
        text-align: center !important; /* 平板端hover时标题也居中 */
    }
    .application-field-card .field-subtitle {
        display: block;
        opacity: 1;
        max-height: 200px;
        text-align: center !important; /* 平板端副标题居中 */
    }
    .application-field-card:hover .field-subtitle {
        text-align: center !important; /* 平板端hover时副标题也居中 */
    }
    /* 应用领域卡片按钮 - 统一风格并居中 */
    .application-field-card .field-btn {
        display: flex;
        opacity: 1 !important;
        visibility: visible !important;
        height: 40px;
        padding: 0 24px;
        font-size: 15px;
        font-weight: 500;
        margin: 15px auto 0 auto;
        width: auto;
        min-width: 140px;
        border-radius: 20px;
        align-items: center;
        justify-content: center;
        box-shadow: 0 2px 8px rgba(80, 162, 111, 0.2);
        transition: all 0.3s ease;
    }
    .application-field-card .field-btn:active {
        transform: scale(0.98);
        box-shadow: 0 1px 4px rgba(80, 162, 111, 0.3);
    }
}
@media (max-width: 768px) {
    .application-field-section {
        padding-top: 40px !important;
        padding-bottom: 60px !important;
    }
    .application-field-title {
        font-size: 28px;
        margin-bottom: 20px;
    }
    .application-field-description {
        font-size: 13px;
        margin-bottom: 30px;
    }
    .application-field-container {
        padding: 0 20px;
        width: 100%;
        max-width: 100%;
        overflow: visible;
    }
    .application-field-wrapper {
        display: flex !important;
        flex-wrap: wrap !important;
        gap: 20px !important;
        overflow-x: visible !important;
        overflow-y: visible !important;
        transform: none !important;
        width: 100% !important;
    }
    .application-field-card {
        flex: 0 0 100% !important;
        min-width: 100% !important;
        max-width: 100% !important;
        width: 100% !important;
        height: 400px;
        min-height: 400px;
        max-height: 400px;
        border-radius: 12px;
        transform: none !important;
        margin: 0 !important;
    }
    .application-field-card:hover,
    .application-field-card.default-hover {
        flex: 0 0 100% !important;
        min-width: 100% !important;
        max-width: 100% !important;
    }
    .application-field-card .field-pic {
        border-radius: 12px;
    }
    .application-field-card .field-content {
        border-radius: 0 0 12px 12px;
        align-items: center !important; /* 手机端强制居中 */
        padding-bottom: 25px !important; /* 增加底部内边距，让按钮不贴底 */
    }
    .application-field-card:hover .field-content {
        align-items: center !important; /* 手机端hover时也保持居中 */
    }
    .application-field-card .field-title {
        font-size: 20px;
        text-align: center !important; /* 手机端标题居中 */
    }
    .application-field-card:hover .field-title {
        text-align: center !important; /* 手机端hover时标题也居中 */
    }
    .application-field-card .field-subtitle {
        font-size: 13px;
        text-align: center !important; /* 手机端副标题居中 */
    }
    .application-field-card:hover .field-subtitle {
        text-align: center !important; /* 手机端hover时副标题也居中 */
    }
    /* 移动端始终显示副标题和按钮 */
    .application-field-card .field-subtitle {
        opacity: 1;
        max-height: 200px;
    }
    /* 应用领域卡片按钮 - 统一风格并居中 */
    .application-field-card .field-btn {
        opacity: 1 !important;
        visibility: visible !important;
        height: 36px;
        padding: 0 20px;
        font-size: 14px;
        font-weight: 500;
        margin: 15px auto 20px auto;
        width: auto;
        min-width: 100px;
        border-radius: 18px;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 2px 8px rgba(80, 162, 111, 0.2);
        transition: all 0.3s ease;
    }
    .application-field-card .field-btn:active {
        transform: scale(0.98);
        box-shadow: 0 1px 4px rgba(80, 162, 111, 0.3);
    }
    /* 手机端禁用PC端的hover扩展效果 */
    .application-field-wrapper:has(.application-field-card:hover) .application-field-card:not(:hover),
    .application-field-wrapper:has(.application-field-card.default-hover) .application-field-card:not(.default-hover) {
        flex: 0 0 100% !important;
        min-width: 100% !important;
    }
    .application-field-card.default-hover {
        flex: 0 0 100% !important;
        min-width: 100% !important;
        max-width: 100% !important;
    }
    .application-field-card.default-hover .field-content {
        align-items: center !important;
    }
    .application-field-card.default-hover .field-title {
        text-align: center !important;
    }
    .application-field-card.default-hover .field-subtitle {
        text-align: center !important;
    }
}

/* 视频展示和功能卡片区域样式 */
.video-features-section {
    padding-top: calc((80/1918) * 100vw) !important;
    padding-bottom: calc((100/1918) * 100vw) !important;
    position: relative;
    background: linear-gradient(to bottom, #fff 33.33%, #f6f8fa 33.33%);
}
.video-features-title {
    text-align: center;
    font-family: var(--font-heading);
    font-size: calc((48/1918) * 100vw);
    font-weight: bold;
    color: #000;
    margin-bottom: calc((20/1918) * 100vw);
    text-transform: uppercase;
    letter-spacing: 2px;
}
.video-features-description {
    text-align: center;
    font-size: calc((16/1918) * 100vw);
    color: #666;
    margin-bottom: calc((60/1918) * 100vw);
    line-height: 1.6;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}
.video-container {
    width: 100%;
    max-width: 1680px;
    margin: 0 auto calc((60/1918) * 100vw);
    padding: 0 calc((40/1918) * 100vw);
    box-sizing: border-box;
}
.video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 比例 */
    border-radius: calc((12/1918) * 100vw);
    overflow: hidden;
    background: #000;
}
.video-wrapper video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 2;
}
.video-wrapper .video-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000;
    z-index: 1;
}
.video-wrapper .video-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.features-grid {
    width: 100%;
    max-width: 1680px;
    margin: 0 auto;
    padding: 0 calc((40/1918) * 100vw);
    box-sizing: border-box;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: calc((30/1918) * 100vw);
}
.feature-card {
    background: transparent;
    border-radius: calc((8/1918) * 100vw);
    padding: calc((30/1918) * 100vw);
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
}
.feature-card:hover {
    transform: translateY(-4px);
}
.feature-card-header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: calc((20/1918) * 100vw);
}
.feature-icon {
    width: calc((50/1918) * 100vw);
    height: calc((50/1918) * 100vw);
    flex-shrink: 0;
    margin-bottom: calc((15/1918) * 100vw);
}
.feature-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.feature-title {
    font-size: calc((20/1918) * 100vw);
    font-weight: bold;
    color: #000;
    line-height: 1.4;
    text-align: left;
}
.feature-description {
    font-size: calc((14/1918) * 100vw);
    color: #666;
    line-height: 1.6;
    margin-top: calc((10/1918) * 100vw);
}
@media (max-width: 1100px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    .video-wrapper {
        border-radius: 12px;
    }
    .feature-card {
        padding: 25px;
    }
    .feature-icon {
        width: 40px;
        height: 40px;
        margin-bottom: 12px;
    }
    .feature-title {
        font-size: 18px;
    }
    .feature-description {
        font-size: 13px;
    }
}
@media (max-width: 768px) {
    .video-features-title {
        font-size: 28px;
    }
    .video-features-description {
        font-size: 13px;
    }
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .video-wrapper {
        border-radius: 8px;
    }
    .feature-card {
        padding: 20px;
    }
    .feature-icon {
        width: 35px;
        height: 35px;
        margin-bottom: 10px;
    }
    .feature-title {
        font-size: 16px;
    }
    .feature-description {
        font-size: 12px;
    }
}

/* ABOUT US 区域样式 */
.about-us-section {
    padding-top: calc((80/1918) * 100vw) !important;
    padding-bottom: calc((100/1918) * 100vw) !important;
    position: relative;
    background-color: #fff;
}
.about-us-container {
    width: 100%;
    max-width: 1680px;
    margin: 0 auto;
    padding: 0 calc((40/1918) * 100vw);
    box-sizing: border-box;
    display: flex;
    gap: calc((40/1918) * 100vw);
    align-items: flex-start;
}
.about-us-content {
    flex: 0 0 33.33%;
    display: flex;
    flex-direction: column;
}
.about-us-title {
    font-family: var(--font-heading);
    font-size: calc((48/1918) * 100vw);
    font-weight: bold;
    color: #000;
    margin-bottom: calc((30/1918) * 100vw);
    text-transform: uppercase;
    letter-spacing: 2px;
}
.about-us-description {
    font-size: calc((16/1918) * 100vw);
    color: #666;
    line-height: 1.6;
    margin-bottom: calc((50/1918) * 100vw);
}
.about-us-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    row-gap: calc((60/1918) * 100vw);
    column-gap: calc((30/1918) * 100vw);
}
.stat-item {
    display: flex;
    flex-direction: column;
}
.stat-number-wrapper {
    display: flex;
    align-items: baseline;
    margin-bottom: calc((20/1918) * 100vw);
}
.stat-number {
    font-size: calc((48/1918) * 100vw);
    font-weight: bold;
    color: var(--brand-primary);
    line-height: 1;
    font-family: 'Courier New', monospace;
    letter-spacing: -1px;
}
.stat-unit {
    font-size: calc((20/1918) * 100vw);
    color: var(--brand-primary);
    margin-left: calc((8/1918) * 100vw);
    font-weight: normal;
}
.stat-description {
    font-size: calc((14/1918) * 100vw);
    color: #666;
    line-height: 1.5;
}
.about-us-map {
    flex: 0 0 66.67%;
    position: relative;
    height: calc((600/1918) * 100vw);
    border-radius: calc((12/1918) * 100vw);
    overflow: hidden;
}
.about-us-map img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
@media (max-width: 1100px) {
    .about-us-container {
        flex-direction: column;
        gap: 30px;
    }
    .about-us-content {
        flex: 1;
    }
    .about-us-map {
        flex: 1;
        height: 400px;
    }
    .about-us-title {
        font-size: 36px;
    }
    .about-us-description {
        font-size: 14px;
    }
    .stat-number {
        font-size: 36px;
    }
    .stat-unit {
        font-size: 18px;
    }
    .stat-description {
        font-size: 13px;
    }
}
@media (max-width: 768px) {
    .about-us-stats {
        grid-template-columns: 1fr;
        row-gap: 40px;
        column-gap: 20px;
    }
    .about-us-map {
        height: 300px;
    }
    .about-us-title {
        font-size: 28px;
    }
    .about-us-description {
        font-size: 13px;
    }
    .stat-number {
        font-size: 32px;
    }
    .stat-unit {
        font-size: 16px;
    }
    .stat-description {
        font-size: 12px;
    }
}

/* 2K分辨率（2560x1440）自适应优化 */
@media (min-width: 1921px) {
    /* 限制容器最大宽度，避免在2K分辨率下过度放大 */
    .product-swiper-container,
    .application-field-container,
    .video-container,
    .features-grid,
    .about-us-container {
        max-width: 1680px;
        padding-left: 40px;
        padding-right: 40px;
    }
    
    /* 产品展示区域 - 使用固定值替代vw计算 */
    .product-showcase-section {
        padding-top: 80px !important;
        padding-bottom: 100px !important;
    }
    .product-showcase-title {
        font-size: 48px;
        margin-bottom: 60px;
    }
    .product-swiper-container {
        padding: 0 40px;
    }
    .product-swiper-wrapper {
        gap: 30px;
    }
    .product-card {
        flex: 0 0 calc((100% - 90px) / 4);
        height: 600px;
        min-height: 600px;
        max-height: 600px;
    }
    .product-card .txt {
        padding: 40px;
    }
    .product-card .txt .title-row {
        margin-bottom: 12px;
    }
    .product-card .txt .h {
        font-size: 28px;
    }
    .product-card .icon-wrapper {
        width: 50px;
        height: 50px;
        margin-left: 15px;
    }
    .product-card .txt .p {
        font-size: 14px;
        margin-bottom: 24px;
    }
    .product-card .btn {
        left: 40px;
    }
    .product-card .pic {
        height: 280px;
    }
    .product-card:hover .pic img {
        left: 50px;
    }
    .product-nav-arrow {
        width: 50px;
        height: 50px;
    }
    .product-nav-arrow.prev {
        left: -60px;
    }
    .product-nav-arrow.next {
        right: -60px;
    }
    
    /* 应用领域区域 - 使用固定值 */
    .application-field-section {
        padding-top: 80px !important;
        padding-bottom: 0 !important;
    }
    .application-field-title {
        font-size: 48px;
        margin-bottom: 20px;
    }
    .application-field-description {
        font-size: 16px;
        margin-bottom: 60px;
    }
    .application-field-container {
        padding: 0 40px;
    }
    .application-field-wrapper {
        gap: 30px;
        overflow-x: auto;
        overflow-y: hidden;
        scroll-behavior: smooth;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }
    .application-field-wrapper::-webkit-scrollbar {
        display: none;
    }
    .application-field-card {
        flex: 0 0 calc((100% - 90px) / 4);
        height: 500px;
        min-height: 500px;
        max-height: 500px;
        border-radius: 12px;
    }
    /* 当有卡片hover时，其他卡片缩小 - 2K分辨率 */
    .application-field-wrapper:has(.application-field-card:hover) .application-field-card:not(:hover),
    .application-field-wrapper:has(.application-field-card.default-hover) .application-field-card:not(.default-hover) {
        flex: 0 0 calc((100% - 90px - 500px) / 3);
        min-width: calc((100% - 90px - 500px) / 3);
    }
    /* 第一个卡片默认hover状态 - 2K分辨率 */
    .application-field-card.default-hover {
        flex: 0 0 500px !important;
        min-width: 500px !important;
        z-index: 5;
    }
    .application-field-card.default-hover .field-content {
        align-items: flex-start;
    }
    .application-field-card.default-hover .field-title {
        text-align: left;
    }
    .application-field-card.default-hover .field-subtitle {
        opacity: 1;
        max-height: 200px;
        margin-bottom: 20px;
        text-align: left;
    }
    .application-field-card.default-hover .field-btn {
        opacity: 1;
        visibility: visible;
    }
    .application-field-card:hover {
        flex: 0 0 500px !important;
        min-width: 500px !important;
    }
    .application-field-card .field-pic {
        border-radius: 12px;
    }
    .application-field-card .field-content {
        padding: 30px 25px;
        border-radius: 0 0 12px 12px;
    }
    .application-field-card .field-title {
        font-size: 28px;
        margin-bottom: 10px;
    }
    .application-field-card .field-subtitle {
        font-size: 14px;
        margin-bottom: 20px;
    }
    .application-field-card:hover .field-subtitle {
        margin-bottom: 20px;
    }
    .application-field-card .field-btn {
        height: 40px;
        padding: 0 20px;
        border-radius: 20px;
        font-size: 14px;
    }
    .application-field-nav-arrow {
        width: 50px;
        height: 50px;
    }
    .application-field-nav-arrow.prev {
        left: -60px;
    }
    .application-field-nav-arrow.next {
        right: -60px;
    }
    
    /* 视频展示和功能卡片区域 - 使用固定值 */
    .video-features-section {
        padding-top: 80px !important;
        padding-bottom: 100px !important;
    }
    .video-features-title {
        font-size: 48px;
        margin-bottom: 20px;
    }
    .video-features-description {
        font-size: 16px;
        margin-bottom: 60px;
    }
    .video-container {
        margin-bottom: 60px;
        padding: 0 40px;
    }
    .video-wrapper {
        border-radius: 12px;
    }
    .features-grid {
        padding: 0 40px;
        gap: 30px;
    }
    .feature-card {
        padding: 30px;
        border-radius: 8px;
    }
    .feature-card-header {
        margin-bottom: 20px;
    }
    .feature-icon {
        width: 50px;
        height: 50px;
        margin-bottom: 15px;
    }
    .feature-title {
        font-size: 20px;
    }
    .feature-description {
        font-size: 14px;
        margin-top: 10px;
    }
    
    /* ABOUT US 区域 - 使用固定值 */
    .about-us-section {
        padding-top: 80px !important;
        padding-bottom: 100px !important;
    }
    .about-us-container {
        padding: 0 40px;
        gap: 40px;
    }
    .about-us-title {
        font-size: 48px;
        margin-bottom: 30px;
    }
    .about-us-description {
        font-size: 16px;
        margin-bottom: 50px;
    }
    .about-us-stats {
        row-gap: 60px;
        column-gap: 30px;
    }
    .stat-number-wrapper {
        margin-bottom: 10px;
    }
    .stat-number {
        font-size: 48px;
    }
    .stat-unit {
        font-size: 20px;
        margin-left: 8px;
    }
    .stat-description {
        font-size: 14px;
    }
    .about-us-map {
        height: 600px;
        border-radius: 12px;
    }
    
    /* 全局rect_show区域 - 限制padding */
    .rect_show {
        padding-bottom: 40px;
        padding-left: 94px;
        padding-right: 94px;
    }
}