/* ============================================================
   About 页面级样式
   注意：原第一至第八屏（first ~ eighth）已整体移除，样式随之清空。
   ============================================================ */
.first {
    height: 7.6rem;
    background-image: url('../assets/images/catalog/first-img.webp');
    background-repeat: no-repeat;
    background-size: 100% 100%;
    padding-left: 1.6rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.first h2 {
    color: #FFF;
    font-family: Montserrat;
    font-size: 0.48rem;
    font-style: normal;
    font-weight: 700;
    line-height: normal;
    margin-bottom: 0.2rem;
    width: 8rem;
}

.first p {
    color: #FFF;
    font-family: Montserrat;
    font-size: 0.16rem;
    font-style: normal;
    font-weight: 400;
    width: 6.5rem;
    line-height: 150%;
    /* 24px */
    text-transform: capitalize;
}
/* ---------- H5 适配 ---------- */
html[data-mode="h5"] .first {
    height: 4.6rem;
    padding: 0.8rem 0.24rem 0;
    background-size: cover;
}

html[data-mode="h5"] .first h2 {
    font-size: 0.36rem;
    margin-bottom: 0.16rem;
    width: 5rem;
}

html[data-mode="h5"] .first p {
    font-size: 0.14rem;
}

/* H5 下忽略桌面端的强制换行，避免窄屏断句生硬 */
html[data-mode="h5"] .first p br {
    display: none;
}
/* ============================================================
   第二屏：Built for Precision Tube and Pipe Cutting
   设计稿基准：1920×716，padding 0 160（1rem = 100px）
   ============================================================ */
.second {
    position: relative;
    z-index: 0;
    width: 100%;
    max-width: 19.2rem;
    height: 7.16rem;
    margin: 0 auto;
    padding: 0 1.6rem; /* 0 160px */
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center; /* 内容上下居中 */
    overflow: hidden;
}

/* 背景图层独立成层，便于做缓推入场 */
.second::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background: url("../assets/images/catalog/second-img.webp") no-repeat center / cover;
}

.second__title {
    width: 8rem; /* 800px */
    color: #333;
    font-family: Montserrat, sans-serif;
    font-size: 0.48rem; /* 48px */
    font-style: normal;
    font-weight: 700;
    line-height: normal;
    margin: 0 0 0.61rem; /* 下边距 61px */
}

.second__desc {
    width: 8rem; /* 800px */
    color: #666;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem; /* 16px */
    font-style: normal;
    font-weight: 400;
    line-height: 150%; /* 24px */
    text-transform: capitalize;
    margin: 0;
}

/* ---------- 入场动画（common.js 滚动加 .is-in-view 触发） ---------- */
html.js .second:not(.is-in-view) .second__title,
html.js .second:not(.is-in-view) .second__desc {
    opacity: 0;
}

.second.is-in-view .second__title {
    animation: catalog-second-title-in 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.05s backwards;
}

.second.is-in-view .second__desc {
    animation: catalog-second-desc-in 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.25s backwards;
}

@keyframes catalog-second-title-in {
    0% {
        opacity: 0;
        transform: translateY(0.3rem);
        filter: blur(0.05rem);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

@keyframes catalog-second-desc-in {
    0% {
        opacity: 0;
        transform: translateY(0.3rem);
        clip-path: inset(0 100% 0 0);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
        clip-path: inset(0 0 0 0);
    }
}

/* ---------- H5 适配 ---------- */
html[data-mode="h5"] .second {
    height: auto;
    padding: 0.6rem 0.24rem;
}

html[data-mode="h5"] .second__title,
html[data-mode="h5"] .second__desc {
    width: 100%;
}

html[data-mode="h5"] .second__title {
    font-size: 0.36rem;
    margin-bottom: 0.3rem;
}


/* ============================================================
   第三屏：Our Tube Cutting Machine Lineup（机型卡片）
   设计稿基准：1920，padding 100 160（1rem = 100px）
   ============================================================ */
.third {
    width: 100%;
    max-width: 19.2rem;
    margin: 0 auto;
    padding: 1rem 1.6rem; /* 100px 160px */
    box-sizing: border-box;
    background: linear-gradient(180deg, #000 22.6%, #667AAE 100%);
}

.third__title {
    color: #FFF;
    text-align: center;
    font-family: Montserrat, sans-serif;
    font-size: 0.48rem; /* 48px */
    font-style: normal;
    font-weight: 700;
    line-height: normal;
    margin: 0 0 0.66rem; /* 下边距 66px */
}

.third__grid {
    display: flex;
    justify-content: center;
    gap: 0.32rem; /* 卡片间距 32px */
    perspective: 14rem;
}

.third__card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    width: 5.12rem; /* 512px */
    height: 6.35rem; /* 635px */
    padding: 0.25rem; /* 25px */
    box-sizing: border-box;
    border-radius: 0.2rem; /* 20px */
    background: #F4F7FD;
    transform-style: preserve-3d;
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
        box-shadow 0.35s ease;
}

.third__card:hover {
    transform: translateY(-0.1rem);
    box-shadow: 0 0.2rem 0.44rem rgba(0, 0, 0, 0.45);
}

.third__card-img {
    width: 4.6rem; /* 460px */
    height: 2.83rem; /* 283px */
    overflow: hidden;
    margin-bottom: 0.23rem; /* 下边距 23px */
}

.third__card-img img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.third__card:hover .third__card-img img {
    transform: scale(1.06);
}

.third__card-title {
    color: #333;
    font-family: Montserrat, sans-serif;
    font-size: 0.24rem; /* 24px */
    font-style: normal;
    font-weight: 600;
    line-height: normal;
    margin: 0 0 0.2rem; /* 下边距 20px */
    transition: color 0.3s ease;
}

.third__card:hover .third__card-title {
    color: #044EAD;
}

.third__card-desc {
    color: #666;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem; /* 16px */
    font-style: normal;
    font-weight: 400;
    line-height: 150%; /* 24px */
    margin: 0;
}

/* ---------- View More 按钮 ---------- */
.third__more {
    display: inline-flex;
    align-items: center;
    gap: 0.1rem; /* 10px */
    margin-top: auto; /* 沉底 */
    padding: 0.12rem 0.16rem; /* 12px 16px */
    background: #FFF;
    color: #999;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem; /* 16px */
    font-style: normal;
    font-weight: 400;
    line-height: normal;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.3s ease, color 0.3s ease,
        transform 0.3s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.3s ease;
}

.third__more svg {
    transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.third__more:hover {
    background: #044EAD;
    color: #FFF;
    transform: translateY(-0.03rem);
    box-shadow: 0 0.08rem 0.18rem rgba(4, 78, 173, 0.45);
}

.third__more:hover svg {
    transform: translateX(0.05rem);
}

.third__more:active {
    transform: translateY(0);
    transition-duration: 0.12s;
}

/* ---------- 入场动画（common.js 滚动加 .is-in-view 触发） ---------- */
html.js .third:not(.is-in-view) .third__title,
html.js .third:not(.is-in-view) .third__card {
    opacity: 0;
}

.third.is-in-view .third__title {
    animation: lineup-fade-up 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.05s backwards;
}

.third.is-in-view .third__card {
    animation: lineup-card-in 0.7s cubic-bezier(0.22, 1, 0.36, 1) backwards;
}

.third.is-in-view .third__card:nth-child(1) { animation-delay: 0.25s; }
.third.is-in-view .third__card:nth-child(2) { animation-delay: 0.37s; }
.third.is-in-view .third__card:nth-child(3) { animation-delay: 0.49s; }

@keyframes lineup-fade-up {
    0% {
        opacity: 0;
        transform: translateY(0.3rem);
        filter: blur(0.04rem);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

@keyframes lineup-card-in {
    0% {
        opacity: 0;
        transform: rotateY(24deg) translateY(0.4rem) scale(0.94);
        filter: blur(0.05rem);
    }
    100% {
        opacity: 1;
        transform: rotateY(0) translateY(0) scale(1);
        filter: blur(0);
    }
}

/* ---------- H5 适配 ---------- */
html[data-mode="h5"] .third {
    padding: 0.6rem 0.24rem;
}

html[data-mode="h5"] .third__title {
    font-size: 0.36rem;
    margin-bottom: 0.4rem;
}

html[data-mode="h5"] .third__grid {
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
}

html[data-mode="h5"] .third__card {
    width: 100%;
    height: auto;
    padding-bottom: 0.4rem;
}

html[data-mode="h5"] .third__card-img {
    width: 100%;
    height: 3.4rem;
}

/* ============================================================
   第五屏：Custom Configurations Available（参数配置表格）
   表格不使用 id/class 选择器，统一通过父级 .fifth 定位
   设计稿基准：1920×947，padding 142 160 0（1rem = 100px）
   ============================================================ */
.fifth {
    position: relative;
    z-index: 0;
    width: 100%;
    max-width: 19.2rem;
    height: 9.47rem;
    margin: 0 auto;
    padding: 1.42rem 1.6rem 0; /* 142px 160px 0 */
    box-sizing: border-box;
    overflow: hidden;
    background: url("../assets/images/catalog/fourth-img.webp") no-repeat center / cover;
}

.fifth__title {
    width: 6.04rem; /* 604px */
    color: #FFF;
    font-family: Montserrat, sans-serif;
    font-size: 0.48rem; /* 48px */
    font-style: normal;
    font-weight: 700;
    line-height: normal;
    margin: 0 0 0.2rem; /* 下边距 20px */
}

.fifth__desc {
    width: 6.57rem; /* 657px */
    color: #999;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem; /* 16px */
    font-style: normal;
    font-weight: 400;
    line-height: 150%; /* 24px */
    text-transform: capitalize;
    margin: 0 0 0.63rem; /* 下边距 63px */
}

/* ---------- 表格：与第四屏格式一致，通过父级定位 ---------- */
.fifth table {
    width: 100%;
    border-collapse: collapse;
}

.fifth th,
.fifth td {
    padding: 0.2rem 0; /* 上下内边距 20px */
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem; /* 16px */
    font-style: normal;
    font-weight: 400;
    line-height: normal;
    text-align: left;
}

.fifth th {
    width: 3.2rem;
    color: #999;
    text-align: left;
}

.fifth td {
    color: #FFF;
}


/* ---------- 入场动画（common.js 滚动加 .is-in-view 触发） ---------- */
html.js .fifth:not(.is-in-view) .fifth__title,
html.js .fifth:not(.is-in-view) .fifth__desc,
html.js .fifth:not(.is-in-view) tbody tr {
    opacity: 0;
}

.fifth.is-in-view .fifth__title {
    animation: cfg-fade-up 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.05s backwards;
}

.fifth.is-in-view .fifth__desc {
    animation: cfg-fade-up 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.18s backwards;
}

.fifth.is-in-view tbody tr {
    animation: cfg-row-in 0.6s cubic-bezier(0.22, 1, 0.36, 1) backwards;
}

.fifth.is-in-view tbody tr:nth-child(1) { animation-delay: 0.3s; }
.fifth.is-in-view tbody tr:nth-child(2) { animation-delay: 0.38s; }
.fifth.is-in-view tbody tr:nth-child(3) { animation-delay: 0.46s; }
.fifth.is-in-view tbody tr:nth-child(4) { animation-delay: 0.54s; }
.fifth.is-in-view tbody tr:nth-child(5) { animation-delay: 0.62s; }
.fifth.is-in-view tbody tr:nth-child(6) { animation-delay: 0.7s; }
.fifth.is-in-view tbody tr:nth-child(7) { animation-delay: 0.78s; }

@keyframes cfg-fade-up {
    0% {
        opacity: 0;
        transform: translateY(0.3rem);
        filter: blur(0.04rem);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

@keyframes cfg-row-in {
    0% {
        opacity: 0;
        transform: translateX(-0.3rem);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ---------- H5 适配 ---------- */
html[data-mode="h5"] .fifth {
    height: auto;
    padding: 0.6rem 0.24rem;
}

html[data-mode="h5"] .fifth__title {
    width: 100%;
    font-size: 0.36rem;
}

html[data-mode="h5"] .fifth__desc {
    width: 100%;
    margin-bottom: 0.4rem;
}

/* 表格小屏改为上下堆叠 */
html[data-mode="h5"] .fifth th,
html[data-mode="h5"] .fifth td {
    display: block;
    width: 100%;
    text-align: left;
}

html[data-mode="h5"] .fifth th {
    padding-bottom: 0.04rem;
}

/* ============================================================
   第六屏：自定义选项说明
   设计稿基准：1920，padding 60 160（1rem = 100px）
   ============================================================ */
.sixth {
    width: 100%;
    max-width: 19.2rem;
    margin: 0 auto;
    padding: 0.6rem 1.6rem; /* 60px 160px */
    box-sizing: border-box;
}

.sixth__title {
    color: #333;
    font-family: Montserrat, sans-serif;
    font-size: 0.32rem; /* 32px */
    font-style: normal;
    font-weight: 700;
    line-height: normal;
    margin: 0 0 0.2rem; /* 下边距 20px */
}

/* 列表与段落同属“描述”，共用文字样式 */
.sixth__list {
    margin: 0 0 0.32rem;
    padding-left: 0.26rem;
}

.sixth__list li,
.sixth__desc {
    color: #666;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem; /* 16px */
    font-style: normal;
    font-weight: 400;
    line-height: 200%; /* 32px */
    text-transform: capitalize;
}

/* ---------- 入场动画（common.js 滚动加 .is-in-view 触发） ---------- */
html.js .sixth:not(.is-in-view) .sixth__title,
html.js .sixth:not(.is-in-view) .sixth__list li,
html.js .sixth:not(.is-in-view) .sixth__desc {
    opacity: 0;
}

.sixth.is-in-view .sixth__title {
    animation: custom-fade-up 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.05s backwards;
}

.sixth.is-in-view .sixth__list li {
    animation: custom-item-in 0.6s cubic-bezier(0.22, 1, 0.36, 1) backwards;
}

.sixth.is-in-view .sixth__list li:nth-child(1) { animation-delay: 0.2s; }
.sixth.is-in-view .sixth__list li:nth-child(2) { animation-delay: 0.32s; }

.sixth.is-in-view .sixth__desc {
    animation: custom-fade-up 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.46s backwards;
}

@keyframes custom-fade-up {
    0% {
        opacity: 0;
        transform: translateY(0.2rem);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes custom-item-in {
    0% {
        opacity: 0;
        transform: translateX(-0.24rem);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ---------- H5 适配 ---------- */
html[data-mode="h5"] .sixth {
    padding: 0.4rem 0.24rem;
}

html[data-mode="h5"] .sixth__title {
    font-size: 0.28rem;
}


/* ============================================================
   第八屏：Inside the Machine（左列表 + 右无限轮播）
   设计稿基准：1920，padding 107 0 107 160（1rem = 100px）
   ============================================================ */
.eighth {
    display: flex;
    align-items: flex-start;
    width: 100%;
    max-width: 19.2rem;
    margin: 0 auto;
    padding: 1.07rem 0 1.07rem 1.6rem; /* 107px 0 107px 160px */
    box-sizing: border-box;
    overflow: hidden;
}

/* ---------- 左侧 ---------- */
.eighth__left {
    flex: 0 0 auto;
    margin-right: 1.04rem; /* 右边距 104px */
}

.eighth__title {
    color: #333;
    font-family: Montserrat, sans-serif;
    font-size: 0.48rem; /* 48px */
    font-style: normal;
    font-weight: 700;
    line-height: normal;
    margin: 0 0 0.6rem; /* 下边距 60px */
}

.eighth__list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.eighth__item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 0.3rem; /* 列表间隔 30px */
    cursor: pointer;
    transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.eighth__item:hover,
.eighth__item.is-active {
    transform: translateX(0.1rem);
}

.eighth__item:last-child {
    margin-bottom: 0;
}

/* 黑色方块：悬浮/选中变蓝并旋转放大 */
.eighth__item-square {
    position: relative;
    flex: 0 0 0.11rem;
    width: 0.11rem; /* 11px */
    height: 0.11rem; /* 11px */
    background: #333;
    margin-right: 0.08rem; /* 右边距 8px */
    margin-top: 0.09rem;
    transition: background-color 0.3s ease, transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.eighth__item-text {
    position: relative;
    width: 4.04rem; /* 404px */
    color: #333;
    font-family: Montserrat, sans-serif;
    font-size: 0.2rem; /* 20px */
    font-style: normal;
    font-weight: 400;
    line-height: normal;
    text-transform: capitalize;
    transition: color 0.3s ease;
}

.eighth__item:hover .eighth__item-text,
.eighth__item.is-active .eighth__item-text {
    color: #044EAD;
}

.eighth__item:hover .eighth__item-square,
.eighth__item.is-active .eighth__item-square {
    background: #044EAD;
    transform: rotate(90deg) scale(1.2);
}

/* ---------- 控制器 ---------- */
.eighth__ctrl {
    display: flex;
    align-items: center;
    gap: 0.1rem;
    margin-top: 0.5rem; /* 上边距 50px */
}

.eighth__ctrl-btn {
    padding: 0;
    border: none;
    border-radius: 50%;
    background: transparent;
    cursor: pointer;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.eighth__ctrl-btn svg {
    display: block;
}

/* 线条与蓝色实心圆的过渡 */
.eighth__ctrl-btn svg ellipse,
.eighth__ctrl-btn svg path,
.eighth__ctrl-fill {
    transition: stroke 0.3s ease, opacity 0.3s ease;
}

/* 悬浮：虚线圆环淡出，蓝色实心圆 + 白色箭头 */
.eighth__ctrl-btn:hover {
    transform: scale(1.08);
}

.eighth__ctrl-btn:hover svg ellipse {
    opacity: 0;
}

.eighth__ctrl-btn:hover .eighth__ctrl-fill {
    opacity: 1;
}

.eighth__ctrl-btn:hover svg path {
    stroke: #FFF;
}

.eighth__ctrl-btn:active {
    transform: scale(0.96);
}

.eighth__ctrl-btn:active {
    transform: scale(0.96);
}

/* ---------- 右侧无限轮播 ---------- */
.eighth__viewport {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.eighth__track {
    display: flex;
    width: max-content;
    will-change: transform;
}

.eighth__card {
    flex: 0 0 4.86rem; /* 486px，无间距 */
    height: 4.94rem; /* 494px */
    padding: 0.1rem 0.64rem 0; /* 10px 64px 0 */
    box-sizing: border-box;
    border-left: 1px solid #E5E5E5;
    display: flex;
    flex-direction: column;
}

.eighth__card-tag {
    position: relative;
    width: max-content;
    display: inline-flex;
    padding: 0.12rem 0.24rem; /* 12px 24px */
    justify-content: center;
    align-items: center;
    gap: 0.1rem; /* 10px */
    border-radius: 0.3rem; /* 30px */
    border: 1px solid #D9D9D9;
    color: #044EAD;
    font-family: Montserrat, sans-serif;
    font-size: 0.14rem; /* 14px */
    font-style: normal;
    font-weight: 400;
    line-height: normal;
    text-transform: capitalize;
    margin-bottom: 0.3rem; /* 下边距 30px */
    overflow: hidden;
    cursor: pointer;
    background-image: linear-gradient(100deg, #1078D8 0%, #044EAD 100%);
    background-repeat: no-repeat;
    background-size: 0% 100%;
    background-position: 0 0;
    transition: background-size 0.45s cubic-bezier(0.22, 0.61, 0.36, 1),
        color 0.3s ease,
        border-color 0.3s ease,
        transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
        box-shadow 0.35s ease;
}

/* 高光斜条掠过 */
.eighth__card-tag::after {
    content: "";
    position: absolute;
    top: -30%;
    left: 0;
    width: 34%;
    height: 160%;
    background: linear-gradient(100deg,
            rgba(255, 255, 255, 0) 0%,
            rgba(255, 255, 255, 0.4) 50%,
            rgba(255, 255, 255, 0) 100%);
    transform: translateX(-220%) skewX(-18deg);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.65s cubic-bezier(0.22, 0.61, 0.36, 1), opacity 0.25s ease;
}

.eighth__card-tag:hover {
    background-size: 100% 100%;
    border-color: #044EAD;
    color: #FFF;
    transform: translateY(-0.03rem) scale(1.05);
    /* 阴影与 third__more 悬浮一致 */
    box-shadow: 0 0.06rem 0.14rem rgba(4, 78, 173, 0.18);
}

.eighth__card-tag:hover::after {
    transform: translateX(320%) skewX(-18deg);
    opacity: 1;
}

.eighth__card-img {
    width: 3.53rem; /* 353px */
    height: 2.25rem; /* 225px */
    overflow: hidden;
    margin-bottom: 0.3rem; /* 下边距 30px */
}

.eighth__card-img img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.eighth__card:hover .eighth__card-img img {
    transform: scale(1.06);
}

.eighth__card-title {
    color: #333;
    font-family: Montserrat, sans-serif;
    font-size: 0.2rem; /* 20px */
    font-style: normal;
    font-weight: 600;
    line-height: normal;
    text-transform: capitalize;
    margin: 0 0 0.1rem; /* 下边距 10px */
    transition: color 0.3s ease;
}

.eighth__card:hover .eighth__card-title {
    color: #044EAD;
}

.eighth__card-desc {
    color: #666;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem; /* 16px */
    font-style: normal;
    font-weight: 400;
    line-height: 150%; /* 24px */
    margin: 0;
}

/* ---------- 入场动画（common.js 滚动加 .is-in-view 触发） ---------- */
html.js .eighth:not(.is-in-view) .eighth__title,
html.js .eighth:not(.is-in-view) .eighth__item,
html.js .eighth:not(.is-in-view) .eighth__ctrl,
html.js .eighth:not(.is-in-view) .eighth__viewport {
    opacity: 0;
}

.eighth.is-in-view .eighth__title {
    animation: machine-fade-up 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.05s backwards;
}

.eighth.is-in-view .eighth__item {
    animation: machine-item-in 0.6s cubic-bezier(0.22, 1, 0.36, 1) backwards;
}

.eighth.is-in-view .eighth__item:nth-child(1) { animation-delay: 0.2s; }
.eighth.is-in-view .eighth__item:nth-child(2) { animation-delay: 0.3s; }
.eighth.is-in-view .eighth__item:nth-child(3) { animation-delay: 0.4s; }
.eighth.is-in-view .eighth__item:nth-child(4) { animation-delay: 0.5s; }

.eighth.is-in-view .eighth__ctrl {
    animation: machine-fade-up 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.55s backwards;
}

.eighth.is-in-view .eighth__viewport {
    animation: machine-viewport-in 0.9s cubic-bezier(0.22, 1, 0.36, 1) 0.2s backwards;
}

@keyframes machine-fade-up {
    0% {
        opacity: 0;
        transform: translateY(0.3rem);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes machine-item-in {
    0% {
        opacity: 0;
        transform: translateX(-0.3rem);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes machine-viewport-in {
    0% {
        opacity: 0;
        transform: translateX(0.4rem);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ---------- H5 适配 ---------- */
html[data-mode="h5"] .eighth {
    flex-direction: column;
    padding: 0.6rem 0.24rem;
}

html[data-mode="h5"] .eighth__left {
    margin-right: 0;
    margin-bottom: 0.4rem;
}

html[data-mode="h5"] .eighth__title {
    font-size: 0.36rem;
    margin-bottom: 0.4rem;
}

html[data-mode="h5"] .eighth__item-text {
    width: auto;
    flex: 1;
}

html[data-mode="h5"] .eighth__card {
    flex: 0 0 5.6rem;
    height: auto;
    padding: 0.2rem 0.3rem 0.4rem;
}

html[data-mode="h5"] .eighth__card-img {
    width: 100%;
    height: 3rem;
}
/* ============================================================
   第七屏：Why Our Tube Laser Cutters Perform（优势卡片）
   设计稿基准：1920，padding 60 160 87（1rem = 100px）
   ============================================================ */
.seventh {
    width: 100%;
    max-width: 19.2rem;
    margin: 0 auto;
    padding: 0.6rem 1.6rem 0.87rem; /* 60px 160px 87px */
    box-sizing: border-box;
}

.seventh__title {
    color: #333;
    text-align: center;
    font-family: Montserrat, sans-serif;
    font-size: 0.48rem; /* 48px */
    font-style: normal;
    font-weight: 700;
    line-height: normal;
    margin: 0 0 0.6rem; /* 下边距 60px */
}

.seventh__grid {
    display: flex;
    justify-content: center;
    gap: 0.24rem; /* 卡片间隔 24px */
}

.seventh__card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    width: 3.82rem; /* 382px */
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.seventh__card:hover {
    transform: translateY(-0.08rem);
}

.seventh__card-img {
    width: 3.82rem; /* 382px */
    height: 2.68rem; /* 268px */
    border-radius: 0.1rem; /* 10px */
    overflow: hidden;
    margin-bottom: 0.25rem; /* 下边距 25px */
}

.seventh__card-img img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.seventh__card:hover .seventh__card-img img {
    transform: scale(1.08);
}

.seventh__card-title {
    color: #333;
    font-family: Montserrat, sans-serif;
    font-size: 0.2rem; /* 20px */
    font-style: normal;
    font-weight: 600;
    line-height: normal;
    margin: 0 0 0.16rem; /* 下边距 16px */
    transition: color 0.3s ease;
}

.seventh__card:hover .seventh__card-title {
    color: #044EAD;
}

.seventh__card-desc {
    color: #666;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem; /* 16px */
    font-style: normal;
    font-weight: 400;
    line-height: 150%; /* 24px */
    margin: 0 0 0.3rem;
}

/* 底部横线：随描述高度自动沉底，四张保持同一水平线；悬浮时自左向右变蓝 */
.seventh__card-line {
    position: relative;
    display: block;
    width: 3.82rem; /* 382px */
    height: 1px;
    margin-top: auto;
    background: #C4C4C4;
    overflow: hidden;
}

.seventh__card-line::after {
    content: "";
    position: absolute;
    inset: 0;
    background: #044EAD;
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.seventh__card:hover .seventh__card-line::after {
    transform: scaleX(1);
}

/* ---------- 入场动画（common.js 滚动加 .is-in-view 触发） ---------- */
html.js .seventh:not(.is-in-view) .seventh__title,
html.js .seventh:not(.is-in-view) .seventh__card {
    opacity: 0;
}

.seventh.is-in-view .seventh__title {
    animation: perform-fade-up 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.05s backwards;
}

.seventh.is-in-view .seventh__card {
    animation: perform-card-in 0.65s cubic-bezier(0.34, 1.56, 0.64, 1) backwards;
}

.seventh.is-in-view .seventh__card:nth-child(1) { animation-delay: 0.2s; }
.seventh.is-in-view .seventh__card:nth-child(2) { animation-delay: 0.32s; }
.seventh.is-in-view .seventh__card:nth-child(3) { animation-delay: 0.44s; }
.seventh.is-in-view .seventh__card:nth-child(4) { animation-delay: 0.56s; }

@keyframes perform-fade-up {
    0% {
        opacity: 0;
        transform: translateY(0.3rem);
        filter: blur(0.04rem);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

@keyframes perform-card-in {
    0% {
        opacity: 0;
        transform: translateY(0.5rem) scale(0.9);
        filter: blur(0.05rem);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

/* ---------- H5 适配 ---------- */
html[data-mode="h5"] .seventh {
    padding: 0.4rem 0.24rem 0.6rem;
}

html[data-mode="h5"] .seventh__title {
    font-size: 0.36rem;
    margin-bottom: 0.4rem;
}

html[data-mode="h5"] .seventh__grid {
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
}

html[data-mode="h5"] .seventh__card {
    width: 100%;
}

html[data-mode="h5"] .seventh__card-img {
    width: 100%;
    height: 3.4rem;
}

html[data-mode="h5"] .seventh__card-line {
    width: 100%;
}

/* ============================================================
   第四屏：Technical Specifications（参数对照表）
   设计稿基准：1920，padding 100 160（1rem = 100px）
   表格内不使用 id/class，全部通过 .fourth 父级定位
   ============================================================ */
.fourth {
    width: 100%;
    max-width: 19.2rem;
    margin: 0 auto;
    padding: 1rem 1.6rem; /* 100px 160px */
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center; /* 内容居中 */
    overflow: hidden;
}

.fourth > h2 {
    color: #333;
    text-align: center;
    font-family: Montserrat, sans-serif;
    font-size: 0.48rem; /* 48px */
    font-style: normal;
    font-weight: 700;
    line-height: normal;
    margin: 0 0 0.54rem; /* 下边距 54px */
    border-bottom: 0;
    text-decoration: none;
}

/* 标题下方不带任何横线（兼容可能存在的伪元素/边框样式） */
.fourth > h2::after,
.fourth > h2::before {
    display: none;
}

/* ---------- 表格（父级定位，无选择器） ---------- */
.fourth table {
    width: 9.12rem; /* 200 + 356 + 356 */
    margin: 0 auto;
    border-collapse: collapse;
    table-layout: fixed;
}

/* 第一列固定 200px，其余列 356px */
.fourth td:first-child {
    width: 2.92rem; /* 200px */
}

.fourth td {
    padding: 0.15rem 0.48rem; /* 上下内边距 15px */
    text-align: center;
    vertical-align: middle;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem; /* 16px */
    font-style: normal;
    font-weight: 400;
    line-height: normal;
    border-bottom: 1px solid #E5E5E5;
}

.fourth tr:last-child td {
    border-bottom: 0;
}


.fourth td:not(:first-child){
    border-bottom: 1px solid #E5E5E5;
    width: 4.48rem; 
}

.fourth tr:last-child td:nth-child(2),
.fourth tr:last-child td:nth-child(3) {
    border-bottom: 0;
}

/* 第一行第一列：Parameter item */
.fourth tr:first-child td:first-child {
    color: #333;
    font-size: 0.24rem; /* 24px */
    font-weight: 600;
}

/* 第一行：图片单元格 */
.fourth tr:first-child td img {
    display: block;
    width: 2.49rem; /* 249px */
    height: 1.53rem; /* 153px */
    object-fit: contain;
    margin: 0 auto;
}

/* 其他行第一列 */
.fourth tr:not(:first-child) td:first-child {
    color: #666;
}

/* 其他行其他列 */
.fourth tr:not(:first-child) td:not(:first-child) {
    color: #333;
}

/* ---------- 入场动画（common.js 滚动加 .is-in-view 触发） ----------
   标题双侧夹合展开 → 机型图坠落回弹 → 行自下而上依次点亮 → 蓝色扫描线自上而下掠过 */
html.js .fourth:not(.is-in-view) > h2,
html.js .fourth:not(.is-in-view) tr {
    opacity: 0;
}

html.js .fourth:not(.is-in-view) tr:first-child img {
    opacity: 0;
}

/* 标题：左右夹合展开 */
.fourth.is-in-view > h2 {
    animation: spec-title-in 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.05s backwards;
}

/* 第一行图片：坠落回弹 */
.fourth.is-in-view tr:first-child td:nth-child(2) img {
    animation: spec-img-drop 0.7s cubic-bezier(0.34, 1.56, 0.64, 1) 0.35s backwards;
}

.fourth.is-in-view tr:first-child td:nth-child(3) img {
    animation: spec-img-drop 0.7s cubic-bezier(0.34, 1.56, 0.64, 1) 0.47s backwards;
}

/* 行：自下而上依次浮现 */
.fourth.is-in-view tr {
    animation: spec-row-in 0.6s cubic-bezier(0.22, 1, 0.36, 1) backwards;
}

.fourth.is-in-view tr:nth-child(1) { animation-delay: 0.25s; }
.fourth.is-in-view tr:nth-child(2) { animation-delay: 0.36s; }
.fourth.is-in-view tr:nth-child(3) { animation-delay: 0.47s; }
.fourth.is-in-view tr:nth-child(4) { animation-delay: 0.58s; }
.fourth.is-in-view tr:nth-child(5) { animation-delay: 0.69s; }
.fourth.is-in-view tr:nth-child(6) { animation-delay: 0.80s; }
.fourth.is-in-view tr:nth-child(7) { animation-delay: 0.91s; }
.fourth.is-in-view tr:nth-child(8) { animation-delay: 1.02s; }
.fourth.is-in-view tr:nth-child(9) { animation-delay: 1.13s; }
.fourth.is-in-view tr:nth-child(10) { animation-delay: 1.24s; }

/* 扫描线：表格自上而下掠过一次 */
.fourth.is-in-view table {
    position: relative;
}

.fourth.is-in-view tbody {
    position: relative;
}

.fourth.is-in-view tbody::after {
    content: '';
    position: absolute;
    left: 0;
    top: -10%;
    width: 100%;
    height: 6%;
    background: linear-gradient(180deg,
            rgba(4, 78, 173, 0) 0%,
            rgba(4, 78, 173, 0.10) 50%,
            rgba(4, 78, 173, 0) 100%);
    pointer-events: none;
    opacity: 0; /* 默认隐藏，动画结束后也保持隐藏 */
    animation: spec-scan 1.4s cubic-bezier(0.4, 0, 0.2, 1) 0.5s forwards;
}

@keyframes spec-title-in {
    0% {
        opacity: 0;
        clip-path: inset(0 50% 0 50%);
        letter-spacing: 0.1rem;
    }

    100% {
        opacity: 1;
        clip-path: inset(0 0 0 0);
        letter-spacing: normal;
    }
}

@keyframes spec-img-drop {
    0% {
        opacity: 0;
        transform: translateY(-0.6rem) rotate(-8deg) scale(0.85);
        filter: blur(0.05rem);
    }

    100% {
        opacity: 1;
        transform: translateY(0) rotate(0) scale(1);
        filter: blur(0);
    }
}

@keyframes spec-row-in {
    0% {
        opacity: 0;
        transform: translateY(0.24rem);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes spec-scan {
    0% {
        top: -10%;
        opacity: 0;
    }

    15% {
        opacity: 1;
    }

    85% {
        opacity: 1;
    }

    100% {
        top: 105%;
        opacity: 0;
    }
}

/* 行悬停微交互：底色高亮 + 首列点亮 */
.fourth tr {
    transition: background-color 0.25s ease;
}

.fourth tbody tr:hover {
    background-color: #F4F7FD;
}

.fourth tr:hover td:first-child {
    color: #044EAD;
}

/* ---------- H5 适配 ---------- */
html[data-mode="h5"] .fourth {
    padding: 0.6rem 0.24rem;
}

html[data-mode="h5"] .fourth table {
    width: 100%;
}

html[data-mode="h5"] .fourth > h2 {
    font-size: 0.36rem;
    margin-bottom: 0.3rem;
}

html[data-mode="h5"] .fourth td {
    font-size: 0.13rem;
    padding: 0.12rem 0.06rem;
}

html[data-mode="h5"] .fourth tr:first-child td:first-child {
    font-size: 0.18rem;
}

html[data-mode="h5"] .fourth tr:first-child td img {
    width: 1.8rem;
    height: 1.1rem;
}

/* ============================================================
   第九屏：Finished Machine Gallery（成品图集）
   设计稿基准：1920，padding 85 160 104（1rem = 100px）
   ============================================================ */
.ninth {
    width: 100%;
    max-width: 19.2rem;
    margin: 0 auto;
    padding: 0.85rem 1.6rem 1.04rem; /* 85px 160px 104px */
    box-sizing: border-box;
    background: linear-gradient(180deg, #EEF1F6 0%, #FFFFFF 32%);
}

.ninth__title {
    color: #333;
    text-align: center;
    font-family: Montserrat, sans-serif;
    font-size: 0.48rem; /* 48px */
    font-style: normal;
    font-weight: 700;
    line-height: normal;
    margin: 0 0 0.6rem; /* 下边距 60px */
}

.ninth__list {
    display: flex;
    justify-content: center;
    gap: 0.24rem; /* 4×382 + 3×24 = 1600 */
    margin: 0;
    padding: 0;
    list-style: none;
}

.ninth__item {
    width: 3.82rem; /* 382px */
    height: 2.6rem; /* 260px */
    border-radius: 0.2rem; /* 20px */
    overflow: hidden;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1),
        box-shadow 0.4s ease;
}

.ninth__item img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1),
        filter 0.4s ease;
}

/* 悬浮高光扫过层 */
.ninth__item::after {
    content: '';
    position: absolute;
    top: 0;
    left: -80%;
    width: 55%;
    height: 100%;
    background: linear-gradient(105deg,
            rgba(255, 255, 255, 0) 0%,
            rgba(255, 255, 255, 0.45) 50%,
            rgba(255, 255, 255, 0) 100%);
    transform: skewX(-20deg);
    pointer-events: none;
    transition: left 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- 悬浮动画：3D 抬升倾斜 + 图片放大 + 激光蓝辉光 + 高光扫过 ---------- */
.ninth__item:hover {
    transform: translateY(-0.14rem) rotateX(4deg) scale(1.04);
    box-shadow: 0 0.18rem 0.36rem rgba(4, 78, 173, 0.35),
        0 0 0.02rem rgba(4, 78, 173, 0.6);
    z-index: 2;
}

.ninth__item:hover img {
    transform: scale(1.1);
    filter: saturate(1.15);
}

.ninth__item:hover::after {
    left: 130%;
}

/* ---------- 入场动画（common.js 滚动加 .is-in-view 触发） ----------
   标题自上翻落 → 图片交替从左右翻入 + 错峰上浮 → 底部渐显 */
html.js .ninth:not(.is-in-view) .ninth__title,
html.js .ninth:not(.is-in-view) .ninth__item {
    opacity: 0;
}

.ninth.is-in-view .ninth__title {
    animation: gallery-title-in 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.05s backwards;
}

.ninth.is-in-view .ninth__item {
    animation: gallery-item-in 0.75s cubic-bezier(0.22, 1, 0.36, 1) backwards;
}

/* 奇偶交替：奇数从左翻入、偶数从右翻入 */
.ninth.is-in-view .ninth__item:nth-child(odd) {
    animation-name: gallery-item-left;
}

.ninth.is-in-view .ninth__item:nth-child(even) {
    animation-name: gallery-item-right;
}

.ninth.is-in-view .ninth__item:nth-child(1) { animation-delay: 0.3s; }
.ninth.is-in-view .ninth__item:nth-child(2) { animation-delay: 0.42s; }
.ninth.is-in-view .ninth__item:nth-child(3) { animation-delay: 0.54s; }
.ninth.is-in-view .ninth__item:nth-child(4) { animation-delay: 0.66s; }

@keyframes gallery-title-in {
    0% {
        opacity: 0;
        transform: translateY(-0.35rem) rotateX(-60deg);
        filter: blur(0.05rem);
    }

    100% {
        opacity: 1;
        transform: translateY(0) rotateX(0);
        filter: blur(0);
    }
}

@keyframes gallery-item-left {
    0% {
        opacity: 0;
        transform: perspective(8rem) translateX(-0.5rem) rotateY(-35deg) scale(0.9);
        filter: blur(0.05rem);
    }

    100% {
        opacity: 1;
        transform: perspective(8rem) translateX(0) rotateY(0) scale(1);
        filter: blur(0);
    }
}

@keyframes gallery-item-right {
    0% {
        opacity: 0;
        transform: perspective(8rem) translateX(0.5rem) rotateY(35deg) scale(0.9);
        filter: blur(0.05rem);
    }

    100% {
        opacity: 1;
        transform: perspective(8rem) translateX(0) rotateY(0) scale(1);
        filter: blur(0);
    }
}

/* ---------- H5 适配 ---------- */
html[data-mode="h5"] .ninth {
    padding: 0.6rem 0.24rem 0.7rem;
}

html[data-mode="h5"] .ninth__title {
    font-size: 0.36rem;
    margin-bottom: 0.4rem;
}

html[data-mode="h5"] .ninth__list {
    flex-wrap: wrap;
    gap: 0.2rem;
}

html[data-mode="h5"] .ninth__item {
    width: calc(50% - 0.1rem);
    height: 2.2rem;
}

/* ============================================================
   第十屏：Industries We Serve（无限横向滚动行业图集）
   设计稿基准：1920（1rem = 100px）
   ============================================================ */
.tenth {
    width: 100%;
    max-width: 19.2rem;
    margin: 0 auto;
    box-sizing: border-box;
    text-align: center;
    overflow: hidden;
        display: flex;
    flex-direction: column;
        align-items: center;
}

.tenth__title {
    color: #333;
    text-align: center;
    font-family: Montserrat, sans-serif;
    font-size: 0.48rem; /* 48px */
    font-style: normal;
    font-weight: 700;
    line-height: normal;
    margin: 0 0 0.6rem; /* 下边距 60px */
}

/* ---------- 无限横向滚动（两份轨道循环，无 Drag 圆圈） ---------- */
.tenth__marquee {
    display: flex;
    gap: 0.5rem; /* 间隔 50px */
    width: 100%;
    overflow: hidden;
    margin: 0 0 0.66rem; /* 下边距 66px */
}

.tenth__track {
    display: flex;
    gap: 0.5rem; /* 间隔 50px */
    flex-shrink: 0;
    min-width: max-content;
    margin: 0;
    padding: 0;
    list-style: none;
    animation: tenth-scroll 60s linear infinite;
}

/* 悬浮暂停滚动 */
.tenth__marquee:hover .tenth__track {
    animation-play-state: paused;
}

@keyframes tenth-scroll {
    from {
        transform: translateX(0);
    }

    to {
        transform: translateX(calc(-100% - 0.5rem)); /* 连同间隙一起位移，无缝循环 */
    }
}

.tenth__item {
    position: relative;
    width: 9.57rem; /* 957px */
    height: 4.8rem; /* 480px */
    overflow: hidden;
    flex-shrink: 0;
}

.tenth__item img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1),
        filter 0.4s ease;
}

/* 悬浮遮罩：自下而上的黑色渐变 + 文字 + 箭头 */
.tenth__mask {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 0.25rem 0.5rem;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.00) 75.83%, #000 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.tenth__name {
    color: #FFF;
    font-family: Montserrat, sans-serif;
    font-size: 0.24rem; /* 24px */
    font-style: normal;
    font-weight: 600;
    line-height: normal;
    margin: 0;
    transform: translateY(0.2rem);
    opacity: 0;
    transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1) 0.05s,
        opacity 0.4s ease 0.05s;
}

.tenth__arrow {
    transform: translateY(0.2rem) rotate(0deg);
    opacity: 0;
    transition: transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1) 0.1s,
        opacity 0.4s ease 0.1s;
}

/* ---------- 图片悬浮：变焦放大 + 灰度转彩色 + 遮罩/文字/箭头依次升起 ---------- */
.tenth__item:hover img {
    transform: scale(1.06);
    filter: saturate(1.15);
}

.tenth__item:hover .tenth__mask {
    opacity: 1;
}

.tenth__item:hover .tenth__name {
    transform: translateY(0);
    opacity: 1;
}

.tenth__item:hover .tenth__arrow {
    transform: translateY(0) rotate(0);
    opacity: 1;
    animation: tenth-arrow-nudge 1.2s cubic-bezier(0.22, 1, 0.36, 1) 0.5s infinite;
}

@keyframes tenth-arrow-nudge {

    0%,
    100% {
        transform: translate(0, 0);
    }

    50% {
        transform: translate(0.05rem, -0.05rem);
    }
}

/* ---------- View More 按钮 ---------- */
.tenth__more {
    width: max-content;
    position: relative;
    display: inline-flex;
    padding: 0.16rem 0.3rem; /* 16px 30px */
    align-items: center;
    gap: 0.1rem; /* 10px */
    background: #044EAD;
    color: #FFF;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem; /* 16px */
    font-style: normal;
    font-weight: 400;
    line-height: normal;
    text-decoration: none;
    overflow: hidden;
    transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1),
        box-shadow 0.3s ease;
}

/* 悬浮高光扫过层 */
.tenth__more::before {
    content: '';
    position: absolute;
    top: 0;
    left: -80%;
    width: 50%;
    height: 100%;
    background: linear-gradient(105deg,
            rgba(255, 255, 255, 0) 0%,
            rgba(255, 255, 255, 0.35) 50%,
            rgba(255, 255, 255, 0) 100%);
    transform: skewX(-20deg);
    transition: left 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.tenth__more svg {
    transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.tenth__more:hover {
    transform: translateY(-0.02rem);
    /* 柔和的扩散光晕，避免生硬的大块投影 */
    box-shadow: 0 0.04rem 0.12rem rgba(4, 78, 173, 0.16),
        0 0.01rem 0.03rem rgba(0, 0, 0, 0.06);
}

.tenth__more:hover::before {
    left: 130%;
}

.tenth__more:hover svg {
    transform: translateX(0.06rem);
}

.tenth__more:active {
    transform: translateY(0);
    transition-duration: 0.12s;
}

/* ---------- 入场动画（common.js 滚动加 .is-in-view 触发） ----------
   标题字距收缩浮现 → 图集整体自右向左滑入 + 图片错峰上浮 → 按钮弹起 */
html.js .tenth:not(.is-in-view) .tenth__title,
html.js .tenth:not(.is-in-view) .tenth__item,
html.js .tenth:not(.is-in-view) .tenth__more {
    opacity: 0;
}

.tenth.is-in-view .tenth__title {
    animation: tenth-title-in 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.05s backwards;
}

.tenth.is-in-view .tenth__marquee {
    animation: tenth-marquee-in 0.9s cubic-bezier(0.22, 1, 0.36, 1) 0.25s backwards;
}

/* 首屏可见的图片依次上浮 */
.tenth.is-in-view .tenth__track:first-child .tenth__item {
    animation: tenth-item-in 0.7s cubic-bezier(0.22, 1, 0.36, 1) backwards;
}

.tenth.is-in-view .tenth__track:first-child .tenth__item:nth-child(1) { animation-delay: 0.4s; }
.tenth.is-in-view .tenth__track:first-child .tenth__item:nth-child(2) { animation-delay: 0.5s; }
.tenth.is-in-view .tenth__track:first-child .tenth__item:nth-child(3) { animation-delay: 0.6s; }

.tenth.is-in-view .tenth__more {
    animation: tenth-more-in 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.85s backwards;
}

@keyframes tenth-title-in {
    0% {
        opacity: 0;
        letter-spacing: 0.12rem;
        filter: blur(0.06rem);
        transform: translateY(0.25rem);
    }

    100% {
        opacity: 1;
        letter-spacing: normal;
        filter: blur(0);
        transform: translateY(0);
    }
}

@keyframes tenth-marquee-in {
    0% {
        opacity: 0;
        transform: translateX(0.8rem);
    }

    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes tenth-item-in {
    0% {
        opacity: 0;
        transform: translateY(0.3rem) scale(0.96);
        filter: blur(0.05rem);
    }

    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

@keyframes tenth-more-in {
    0% {
        opacity: 0;
        transform: translateY(0.3rem) scale(0.85);
    }

    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ---------- H5 适配 ---------- */
html[data-mode="h5"] .tenth {
    padding: 0.6rem 0;
}

html[data-mode="h5"] .tenth__title {
    font-size: 0.36rem;
    margin-bottom: 0.4rem;
}

html[data-mode="h5"] .tenth__marquee,
html[data-mode="h5"] .tenth__track {
    gap: 0.2rem;
}

html[data-mode="h5"] .tenth__item {
    width: 5.6rem;
    height: 2.8rem;
}

html[data-mode="h5"] .tenth__name {
    font-size: 0.2rem;
}

/* ============================================================
   第十一屏：FAQ Section（左图 + 右侧手风琴问答）
   设计稿基准：1920，padding 104 0 90（1rem = 100px）
   ============================================================ */
.eleventh {
    width: 100%;
    max-width: 19.2rem;
    margin: 0 auto;
    padding: 1.04rem 0 0.9rem; /* 104px 0 90px */
    box-sizing: border-box;
    display: flex;
    align-items: flex-start;
    overflow: hidden;
}

/* ---------- 左侧：标题 + 机型图 ---------- */
.eleventh__left {
    flex-shrink: 0;
    width: 8.35rem; /* 835px */
    padding-left: 1.6rem; /* 160px */
    box-sizing: border-box;
}

.eleventh__title {
    color: #333;
    font-family: Montserrat, sans-serif;
    font-size: 0.48rem; /* 48px */
    font-style: normal;
    font-weight: 700;
    line-height: normal;
    margin: 0 0 1.29rem; /* 下边距 129px */
}

.eleventh__img {
    display: block;
    width: 6.03rem; /* 603px */
    height: 4.52rem; /* 452px */
    object-fit: cover;
    margin-left: -1.6rem; /* 向左位移 160px，贴齐屏幕左缘 */
}

/* ---------- 右侧：手风琴问答 ---------- */
.eleventh__faq {
    flex: 1;
    padding-right: 1.6rem; /* 160px */
    min-width: 0;
}

.eleventh__item {
    transition: background-color 0.35s ease;
}

/* 展开项高亮底色（与设计图一致） */
.eleventh__item.is-open {
    background: #F4F7FD;
}

.eleventh__q {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.2rem;
    width: 100%;
    padding: 0.3rem; /* 30px */
    box-sizing: border-box;
    background: none;
    border: 0;
    cursor: pointer;
    text-align: left;
    font-family: Montserrat, sans-serif;
}

.eleventh__q-text {
    color: #333;
    width: 7.42rem; /* 742px */
    max-width: 100%;
    font-size: 0.2rem; /* 20px */
    font-style: normal;
    font-weight: 600;
    line-height: normal;
    transition: color 0.3s ease;
}

.eleventh__q:hover .eleventh__q-text {
    color: #044EAD;
}

/* 加号图标（CSS 绘制，展开时旋转为减号） */
.eleventh__icon {
    position: relative;
    flex-shrink: 0;
    width: 0.16rem;
    height: 0.16rem;
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.eleventh__icon::before,
.eleventh__icon::after {
    content: '';
    position: absolute;
    background: #333;
    border-radius: 0.01rem;
    transition: background-color 0.3s ease;
}

.eleventh__icon::before {
    left: 0;
    top: 50%;
    width: 100%;
    height: 0.02rem;
    transform: translateY(-50%);
}

.eleventh__icon::after {
    left: 50%;
    top: 0;
    width: 0.02rem;
    height: 100%;
    transform: translateX(-50%);
}

/* 展开态：竖杠收起 → 减号 */
.eleventh__item.is-open .eleventh__icon {
    transform: rotate(180deg);
}

.eleventh__item.is-open .eleventh__icon::after {
    transform: translateX(-50%) scaleY(0);
}

.eleventh__a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.eleventh__a-text {
    color: #666;
    width: 7.42rem; /* 742px */
    max-width: 100%;
    padding: 0 0.3rem 0.3rem; /* 30px */
    box-sizing: border-box;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem; /* 16px */
    font-style: normal;
    font-weight: 400;
    line-height: 150%; /* 24px */
    margin: 0;
}

/* ---------- 入场动画（common.js 滚动加 .is-in-view 触发） ----------
   标题横向擦亮 → 图片自左揭开 → 问答行错峰上浮 → 展开项自动撑开 */
html.js .eleventh:not(.is-in-view) .eleventh__title,
html.js .eleventh:not(.is-in-view) .eleventh__img,
html.js .eleventh:not(.is-in-view) .eleventh__item {
    opacity: 0;
}

.eleventh.is-in-view .eleventh__title {
    animation: faq-title-in 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.05s backwards;
}

.eleventh.is-in-view .eleventh__img {
    animation: faq-img-in 0.9s cubic-bezier(0.22, 1, 0.36, 1) 0.2s backwards;
}

.eleventh.is-in-view .eleventh__item {
    animation: faq-item-in 0.6s cubic-bezier(0.22, 1, 0.36, 1) backwards;
}

.eleventh.is-in-view .eleventh__item:nth-child(1) { animation-delay: 0.35s; }
.eleventh.is-in-view .eleventh__item:nth-child(2) { animation-delay: 0.44s; }
.eleventh.is-in-view .eleventh__item:nth-child(3) { animation-delay: 0.53s; }
.eleventh.is-in-view .eleventh__item:nth-child(4) { animation-delay: 0.62s; }
.eleventh.is-in-view .eleventh__item:nth-child(5) { animation-delay: 0.71s; }
.eleventh.is-in-view .eleventh__item:nth-child(6) { animation-delay: 0.80s; }
.eleventh.is-in-view .eleventh__item:nth-child(7) { animation-delay: 0.89s; }

@keyframes faq-title-in {
    0% {
        opacity: 0;
        transform: translateX(-0.4rem);
        filter: blur(0.05rem);
    }

    100% {
        opacity: 1;
        transform: translateX(0);
        filter: blur(0);
    }
}

@keyframes faq-img-in {
    0% {
        opacity: 0;
        clip-path: inset(0 100% 0 0);
        transform: translateX(-0.3rem);
    }

    100% {
        opacity: 1;
        clip-path: inset(0 0 0 0);
        transform: translateX(0);
    }
}

@keyframes faq-item-in {
    0% {
        opacity: 0;
        transform: translateY(0.25rem);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ---------- H5 适配 ---------- */
html[data-mode="h5"] .eleventh {
    flex-direction: column;
    padding: 0.6rem 0.24rem 0.7rem;
}

html[data-mode="h5"] .eleventh__left {
    width: 100%;
    padding-left: 0;
}

html[data-mode="h5"] .eleventh__title {
    font-size: 0.36rem;
    margin-bottom: 0.4rem;
}

html[data-mode="h5"] .eleventh__img {
    width: 100%;
    height: auto;
    margin-left: 0;
}

html[data-mode="h5"] .eleventh__faq {
    width: 100%;
    padding-right: 0;
    margin-top: 0.4rem;
}

html[data-mode="h5"] .eleventh__q-text,
html[data-mode="h5"] .eleventh__a-text {
    width: 100%;
}

/* ============================================================
   第十二屏：Leave a Message（顶部背景图 + 居中留言表单卡片）
   设计稿基准：1920×1018（1rem = 100px）
   表单内不使用 id/class 选择器，全部通过 .twelfth 父级定位
   ============================================================ */
.twelfth {
    position: relative;
    width: 100%;
    max-width: 19.2rem;
    height: 10.18rem; /* 1018px */
    margin: 0 auto;
    box-sizing: border-box;
    overflow: hidden;
}

/* 顶部背景图：独立成层便于做入场动效 */
.twelfth::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4.26rem; /* 426px */
    background: url('../assets/images/catalog/twelfth-img.webp') no-repeat center / cover;
}

/* ---------- 白色表单卡片：绝对定位 top 178，水平居中 ---------- */
.twelfth__card {
    position: absolute;
    top: 1.78rem; /* 178px */
    left: calc(50% - 7.34rem); /* 1468/2 */
    width: 14.68rem; /* 1340 + 64 + 64 */
    height: 7.97rem; /* 697 + 100 */
    padding: 0.5rem 0.64rem; /* 50px 64px */
    box-sizing: border-box;
    background: #FFF;
    box-shadow: 0 0.1rem 0.3rem rgba(0, 0, 0, 0.08);
    overflow: hidden;
}

.twelfth__title {
    color: #333;
    text-align: center;
    font-family: Montserrat, sans-serif;
    font-size: 0.56rem; /* 56px */
    font-style: normal;
    font-weight: 700;
    line-height: normal;
    margin: 0 0 0.19rem; /* 下边距 19px */
}

.twelfth__desc {
    color: #999;
    text-align: center;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem; /* 16px */
    font-style: normal;
    font-weight: 400;
    line-height: 150%; /* 24px */
    margin: 0 0 0.44rem; /* 下边距 44px */
}

/* ---------- 表单（父级定位） ---------- */
.twelfth form ul {
    display: flex;
    flex-wrap: wrap;
    gap: 0.28rem 0.4rem; /* 上下间隔 28，左右间隔 40 */
    margin: 0 0 0.46rem; /* 下边距 46px */
    padding: 0;
    list-style: none;
}

.twelfth form li {
    width: 4.2rem; /* 420px */
}

/* 第三行：文本域通栏 */
.twelfth form li:last-child {
    width: 100%;
}

.twelfth form label {
    display: block;
    color: #999;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem; /* 16px */
    font-style: normal;
    font-weight: 400;
    line-height: 24px; /* 150% */
}

.twelfth form input,
.twelfth form textarea {
    display: block;
    width: 100%;
    padding: 0.18rem 0; /* 上下内边距 18px */
    box-sizing: border-box;
    background: none;
    border: 0;
    border-bottom: 1px solid #E5E5E5;
    color: #000;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem; /* 16px */
    font-style: normal;
    font-weight: 400;
    line-height: 24px; /* 150% */
    outline: none;
    padding-top: 0;
    transition: border-color 0.3s ease;
}

.twelfth form textarea {
    resize: none;
        height: 1.4rem;
}

.twelfth form input::placeholder,
.twelfth form textarea::placeholder {
    color: #999;
}

.twelfth form input:focus,
.twelfth form textarea:focus {
    border-bottom-color: #044EAD;
}

/* ---------- 表单下方描述 ---------- */
.twelfth__privacy {
    color: #999;
    text-align: center;
    font-family: Montserrat, sans-serif;
    width: 8.7rem; /* 870px */
    max-width: 100%;
    margin: 0 auto 0.4rem; /* 下边距 40px */
    font-size: 0.16rem; /* 16px */
    font-style: normal;
    font-weight: 400;
    line-height: 24px; /* 150% */
}

/* ---------- 按钮区 ---------- */
.twelfth__btns p{
    display: flex;
    justify-content: center;
}

.twelfth__reset,
.twelfth__submit {
    width: 1.3rem; /* 130px */
    height: 0.46rem; /* 46px */
    font-family: Montserrat, sans-serif;
    font-size: 0.18rem; /* 18px */
    font-style: normal;
    font-weight: 400;
    line-height: normal;
    border: 0;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.twelfth__reset {
    margin-right: 0.1rem; /* 右边距 10px */
    background: #F5F5F5;
    color: #666;
}

.twelfth__submit {
    background: #044EAD;
    color: #FFF;
}

/* ---------- 按钮悬浮炫酷动效：高光斜扫 + 柔和光晕 ---------- */
.twelfth__reset::before,
.twelfth__submit::before {
    content: '';
    position: absolute;
    top: 0;
    left: -80%;
    width: 50%;
    height: 100%;
    background: linear-gradient(105deg,
            rgba(255, 255, 255, 0) 0%,
            rgba(255, 255, 255, 0.4) 50%,
            rgba(255, 255, 255, 0) 100%);
    transform: skewX(-20deg);
    transition: left 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.twelfth__reset:hover {
    background: #333;
    color: #FFF;
    box-shadow: 0 0.04rem 0.12rem rgba(0, 0, 0, 0.15);
}

.twelfth__reset:hover::before {
    left: 130%;
}

.twelfth__submit:hover {
    background: linear-gradient(90deg, #044EAD 0%, #1078D8 100%);
    box-shadow: 0 0.06rem 0.16rem rgba(4, 78, 173, 0.28);
    transform: translateY(-0.02rem);
}

.twelfth__submit:hover::before {
    left: 130%;
}

.twelfth__reset,
.twelfth__submit {
    transition: background-color 0.3s ease, color 0.3s ease,
        box-shadow 0.3s ease, transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.twelfth__reset:active,
.twelfth__submit:active {
    transform: translateY(0);
    transition-duration: 0.12s;
}

/* ---------- 入场动画（common.js 滚动加 .is-in-view 触发） ----------
   背景图缓推 → 卡片升起浮现 → 标题/描述错峰 → 输入行依次上浮 → 按钮弹起 */
html.js .twelfth:not(.is-in-view) .twelfth__card {
    opacity: 0;
}

html.js .twelfth:not(.is-in-view) .twelfth__title,
html.js .twelfth:not(.is-in-view) .twelfth__desc,
html.js .twelfth:not(.is-in-view) form li,
html.js .twelfth:not(.is-in-view) .twelfth__privacy,
html.js .twelfth:not(.is-in-view) .twelfth__btns {
    opacity: 0;
}

.twelfth.is-in-view::before {
    animation: msg-bg-in 1.2s cubic-bezier(0.22, 1, 0.36, 1) backwards;
}

.twelfth.is-in-view .twelfth__card {
    animation: msg-card-in 0.9s cubic-bezier(0.22, 1, 0.36, 1) 0.15s backwards;
}

.twelfth.is-in-view .twelfth__title {
    animation: msg-fade-up 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.35s backwards;
}

.twelfth.is-in-view .twelfth__desc {
    animation: msg-fade-up 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.45s backwards;
}

.twelfth.is-in-view form li {
    animation: msg-fade-up 0.6s cubic-bezier(0.22, 1, 0.36, 1) backwards;
}

.twelfth.is-in-view form li:nth-child(1) { animation-delay: 0.55s; }
.twelfth.is-in-view form li:nth-child(2) { animation-delay: 0.62s; }
.twelfth.is-in-view form li:nth-child(3) { animation-delay: 0.69s; }
.twelfth.is-in-view form li:nth-child(4) { animation-delay: 0.76s; }
.twelfth.is-in-view form li:nth-child(5) { animation-delay: 0.83s; }
.twelfth.is-in-view form li:nth-child(6) { animation-delay: 0.90s; }
.twelfth.is-in-view form li:nth-child(7) { animation-delay: 0.97s; }

.twelfth.is-in-view .twelfth__privacy {
    animation: msg-fade-up 0.6s cubic-bezier(0.22, 1, 0.36, 1) 1.05s backwards;
}

.twelfth.is-in-view .twelfth__btns {
    animation: msg-btns-in 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 1.15s backwards;
}

@keyframes msg-bg-in {
    from {
        transform: scale(1.15);
    }

    to {
        transform: scale(1);
    }
}

@keyframes msg-card-in {
    0% {
        opacity: 0;
        transform: translateY(0.6rem) scale(0.96);
        box-shadow: none;
    }

    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes msg-fade-up {
    0% {
        opacity: 0;
        transform: translateY(0.2rem);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes msg-btns-in {
    0% {
        opacity: 0;
        transform: translateY(0.25rem) scale(0.9);
    }

    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ---------- H5 适配 ---------- */
html[data-mode="h5"] .twelfth {
    height: auto;
}

html[data-mode="h5"] .twelfth::before {
    height: 3rem;
}

html[data-mode="h5"] .twelfth__card {
    position: relative;
    top: -0.6rem;
    left: auto;
    width: auto;
    height: auto;
    margin: 0 0.24rem;
    padding: 0.4rem 0.24rem;
}

html[data-mode="h5"] .twelfth__title {
    font-size: 0.4rem;
}

html[data-mode="h5"] .twelfth form li {
    width: 100%;
}