/* ============================================================
   about.css —— 仅 about.html 使用（页面级样式）
   ============================================================ */
/* ---------- 入场动效（首屏加载即播放） ----------
   背景 Ken Burns 缓推 → 遮罩左扫淡入 → 标题蒙版揭示+模糊上浮 → 描述左滑淡入 */

/* ============================================================
   第1屏：About Hero（1920 x 500，1rem = 100px）
   背景图 + 左侧黑色渐变遮罩；标题 left 260 / top 137 / 宽 729
   描述 left 260 / top 304 / 宽 520；顶部预留导航栏 80
   ============================================================ */
.first {
    position: relative;
    width: 100%;
    max-width: 19.2rem;
    height: 5rem;
    /* 500px */
    margin: 0.8rem auto 0;
    /* 顶部空出导航栏 80px */
    box-sizing: border-box;
    overflow: hidden;
    padding: 1.37rem 0 0 2.6rem;
}

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


.first__inner {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    flex-direction: column;
}

/* 标题：40px / 600 / #FFF，left 260 / top 137 / 宽 729 */
.first__title {
    width: 7.29rem;
    margin: 0;
    overflow: hidden;
    padding-bottom: 0.05rem;
    color: #FFF;
    font-family: Montserrat, sans-serif;
    font-size: 0.4rem;
    font-style: normal;
    font-weight: 600;
    line-height: normal;
    text-transform: capitalize;
    z-index: 10;
    position: relative;
    margin-bottom: 0.1rem;
}

.first__title span {
    display: inline-block;
}

/* 描述：16px / 400 / #FFF，left 260 / top 304 / 宽 520 */
.first__desc {
    width: 5.2rem;
    margin: 0;
    color: #FFF;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem;
    font-style: normal;
    font-weight: 400;
    line-height: 150%;
    /* 24px */
    text-transform: capitalize;
    z-index: 10;
    position: relative;
}

.first::before {
    transform: scale(1.15);
    animation: first-bg-in 2s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.first__title {
    opacity: 0;
    animation: first-title-in 1s cubic-bezier(0.22, 1, 0.36, 1) 0.4s forwards;
}

.first__desc {
    opacity: 0;
    animation: first-desc-in 0.9s cubic-bezier(0.22, 1, 0.36, 1) 0.85s forwards;
}

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

    to {
        transform: scale(1);
    }
}

/* 遮罩：从左向右展开淡入 */
@keyframes first-shade-in {
    from {
        opacity: 0;
        clip-path: inset(0 100% 0 0);
    }

    to {
        opacity: 1;
        clip-path: inset(0 0 0 0);
    }
}

/* 标题：模糊上浮揭示 */
@keyframes first-title-in {
    from {
        opacity: 0;
        transform: translateY(0.4rem);
        filter: blur(0.06rem);
    }

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

/* 描述：轻微左滑淡入 */
@keyframes first-desc-in {
    from {
        opacity: 0;
        transform: translateX(-0.3rem);
    }

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

/* 按钮：View All Products（设计稿 260_517：195x48，left 260 / top 333）
   #EA5404 圆角 100，白字 16px + 白色 ↗ 箭头 */
.first__btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    box-sizing: border-box;
    width: max-content;
    height: 0.48rem;
    margin-top: 0.4rem;
    padding: 0 0.24rem;
    background: #EA5404;
    border-radius: 1rem;
    overflow: hidden;
    white-space: nowrap;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem;
    font-style: normal;
    font-weight: 400;
    line-height: 1;
    text-decoration: none;
    cursor: pointer;
    z-index: 10;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
        background-color 0.35s ease;
}

.first__btn-label {
    position: relative;
    z-index: 1;
}

.first__btn-arrow {
    position: relative;
    z-index: 1;
    width: 0.2rem;
    height: 0.2rem;
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

/* 高光扫过层 */
.first__btn::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(115deg,
            transparent 30%,
            rgba(255, 255, 255, 0.45) 50%,
            transparent 70%);
    transform: translateX(-130%);
    pointer-events: none;
}

/* 悬浮（无阴影）：回弹上浮 + 加深橙 + 高光扫过 + 箭头斜向飞出 */
.first__btn:hover {
    transform: translateY(-0.04rem);
    background: #D64A00;
}

.first__btn:hover::after {
    transform: translateX(130%);
    transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.first__btn:hover .first__btn-arrow {
    transform: translate(0.03rem, -0.03rem);
}

.first__btn:active {
    transform: translateY(0) scale(0.97);
}

/* 入场：描述之后上浮淡入 */
.first__btn {
    opacity: 0;
    animation: first-btn-in 0.9s cubic-bezier(0.22, 1, 0.36, 1) 1.25s forwards;
}

@keyframes first-btn-in {
    from {
        opacity: 0;
        transform: translateY(0.3rem);
    }

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

/* ---------- H5 适配 ---------- */
html[data-mode="h5"] .first {
    height: auto;
    margin-top: 0.8rem;
    /* H5 重新定义内边距，覆盖 PC 的 1.37rem / 2.6rem，避免标题溢出 */
    padding: 0.7rem 0.3rem 0.5rem;
}

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

html[data-mode="h5"] .first__desc {
    left: auto;
    top: auto;
    bottom: auto;
    width: 100%;
}

html[data-mode="h5"] .first__btn {
    width: 2.2rem;
    margin-top: 0.3rem;
}

/* 系统开启"减少动态效果"时：直接显示，不做隐藏与动画 */
@media (prefers-reduced-motion: reduce) {
    .first::before {
        animation: none;
        transform: none;
    }

    .first__title,
    .first__desc,
    .first__btn {
        animation: none;
        opacity: 1;
        transform: none;
        filter: none;
        clip-path: none;
    }

    .first__btn:hover {
        transform: none;
    }
}

/* ============================================================
   面包屑导航（1920 设计稿，1920x60，bg #F5F5F5，padding-left 160）
   滚动时吸附在固定导航栏（0.8rem）下方
   入场动效由 about.js 的 IntersectionObserver 添加 .is-in-view 触发
   ============================================================ */
.breadcrumb {
    position: sticky;
    top: 0.8rem;
    /* 吸附于 80px 高的导航栏下方 */
    z-index: 90;
    box-sizing: border-box;
    width: 100%;
    max-width: 19.2rem;
    height: 0.6rem;
    /* 60px */
    margin: 0 auto;
    padding-left: 2.6rem;
    /* 160px */
    background: #F2F3ED;
    display: flex;
    align-items: center;
}

.breadcrumb__inner {
    display: flex;
    align-items: center;
    gap: 0.12rem;
    /* 12px */
}

/* 面包屑项：14px / 400 / 行高 24px */
.breadcrumb__item {
    display: inline-flex;
    align-items: center;
    gap: 0.08rem;
    color: #333;
    font-family: "Montserrat", sans-serif;
    /* Gabarito */
    font-size: 0.14rem;
    /* 14px */
    font-style: normal;
    font-weight: 400;
    line-height: 0.24rem;
    /* 24px */
    text-decoration: none;
    cursor: pointer;
}

a.breadcrumb__item {
    transition: color 0.3s ease, transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

a.breadcrumb__item:hover {
    color: #1078D8;
    transform: translateX(0.03rem);
}

/* 当前页：不可点击，弱化为 #999 */
.breadcrumb__item.is-current {
    color: #999;
    cursor: default;
}

/* 分隔符 */
.breadcrumb__sep {
    color: #999;
    font-size: 0.14rem;
    line-height: 0.24rem;
    user-select: none;
}

/* Home 图标：24px，悬浮轻旋 */
.breadcrumb__icon {
    display: block;
    width: 0.24rem;
    /* 24px */
    height: 0.24rem;
    /* 24px */
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.breadcrumb__item--home:hover .breadcrumb__icon {
    transform: rotate(-14deg) scale(1.12);
}

/* ---------- 入场动效：整条自导航栏下方滑落展开，内容错峰淡入 ----------
   隐藏初始态统一限定在 html.js 下：JS 失效（含缓存空脚本）时内容直接显示 */

html.js .breadcrumb.is-in-view {
    clip-path: inset(0 0 -20% 0);
    transition: clip-path 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.1s;
}

/* 内容项：错峰自左滑入 */
html.js .breadcrumb__item,
html.js .breadcrumb__sep {
    opacity: 0;
    transform: translateX(-0.2rem);
}

.breadcrumb.is-in-view .breadcrumb__item,
.breadcrumb.is-in-view .breadcrumb__sep {
    opacity: 1;
    transform: translateX(0);
    transition: opacity 0.5s ease, transform 0.55s cubic-bezier(0.16, 1, 0.3, 1);
}

.breadcrumb.is-in-view .breadcrumb__item--home {
    transition-delay: 0.25s;
}

.breadcrumb.is-in-view .breadcrumb__sep:nth-of-type(1) {
    transition-delay: 0.32s;
}

.breadcrumb.is-in-view .breadcrumb__item:nth-of-type(2) {
    transition-delay: 0.38s;
}

.breadcrumb.is-in-view .breadcrumb__sep:nth-of-type(2) {
    transition-delay: 0.44s;
}

.breadcrumb.is-in-view .breadcrumb__item.is-current {
    transition-delay: 0.5s;
}

/* Home 图标：弹性缩放弹入 */
html.js .breadcrumb__icon {
    opacity: 0;
    scale: 0.3;
}

.breadcrumb.is-in-view .breadcrumb__icon {
    opacity: 1;
    scale: 1;
    transition: opacity 0.4s ease 0.25s,
        scale 0.55s cubic-bezier(0.34, 1.56, 0.64, 1) 0.25s,
        transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.breadcrumb.is-in-view .breadcrumb__item--home:hover .breadcrumb__icon {
    transform: rotate(-14deg) scale(1.12);
}

/* ---------- H5 适配（750 设计稿基准） ---------- */
html[data-mode="h5"] .breadcrumb {
    padding-left: 0.3rem;
}

html[data-mode="h5"] .breadcrumb__item {
    font-size: 0.13rem;
}

/* ---------- 动效减弱（无障碍） ---------- */
@media (prefers-reduced-motion: reduce) {

    .breadcrumb,
    .breadcrumb__item,
    .breadcrumb__sep,
    .breadcrumb__icon {
        transition: none !important;
        opacity: 1 !important;
        transform: none !important;
        clip-path: none !important;
        scale: none !important;
    }
}

/* ============================================================
   第2屏：Our Environmental Philosophy（Figma 260_904：1400 x 430）
   padding 100/260；左图 671x430（直角）+ 间距 108 + 右文区 621
   引号图标 44x44（#999，top 0）→ 标题 40px/600/#333（top 62，两行）
   → 描述 16px/400/#666（top 190，宽 621）
   ============================================================ */
.second {
    box-sizing: border-box;
    width: 100%;
    max-width: 19.2rem;
    margin: 0 auto;
    padding: 1rem 2.6rem;
    /* 100px 260px */
}

.second__inner {
    display: flex;
    align-items: flex-start;
}

/* 左图：671 x 430，直角 */
.second__img {
    flex: 0 0 6.71rem;
    display: block;
    width: 6.71rem;
    height: 4.3rem;
    object-fit: cover;
}

/* 右文区：宽 621，间距 108 */
.second__content {
    flex: 1;
    min-width: 0;
    margin-left: 1.08rem;
    padding-top: 0.45rem;
}

/* 引号图标：44 x 44，#999 */
.second__quote {
    display: block;
    width: 0.44rem;
    height: 0.44rem;
}

/* 标题：40px / 600 / #333，图标下 18 */
.second__title {
    margin: 0.18rem 0 0;
    overflow: hidden;
    padding-bottom: 0.05rem;
    color: #333;
    font-family: Montserrat, sans-serif;
    font-size: 0.4rem;
    font-style: normal;
    font-weight: 600;
    line-height: normal;
    text-transform: capitalize;
}

.second__title span {
    display: inline-block;
}

/* 描述：16px / 400 / #666，宽 621，标题下 30 */
.second__desc {
    margin: 0.3rem 0 0;
    width: 6.21rem;
    color: #666;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem;
    font-style: normal;
    font-weight: 400;
    line-height: 1.5;
}

/* ============================================================
   入场动效（common.js 滚动加 .is-in-view 触发）
   图片左→右擦除揭示 + 缩放聚焦 → 引号图标回弹旋入
   → 标题蒙版揭示 → 描述上浮淡入
   ============================================================ */
html.js .second__img,
html.js .second__quote,
html.js .second__title,
html.js .second__desc {
    opacity: 0;
}

/* 图片：clip 擦除 + 模糊缩放聚焦 */
.second.is-in-view .second__img {
    opacity: 1;
    animation: second2-img-in 1.2s cubic-bezier(0.22, 1, 0.36, 1) 0.2s backwards;
}

@keyframes second2-img-in {
    from {
        opacity: 0;
        filter: blur(0.12rem) brightness(1.25);
        transform: scale(1.12);
        clip-path: inset(0 100% 0 0);
    }

    60% {
        opacity: 1;
        filter: blur(0);
    }

    to {
        opacity: 1;
        filter: none;
        transform: none;
        clip-path: inset(0 0 0 0);
    }
}

/* 引号图标：回弹旋入 */
.second.is-in-view .second__quote {
    opacity: 1;
    animation: second2-quote-in 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.55s backwards;
}

@keyframes second2-quote-in {
    from {
        opacity: 0;
        transform: scale(0.3) rotate(-30deg);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

/* 标题：蒙版揭示 */
.second.is-in-view .second__title {
    opacity: 1;
    animation: second2-title-in 1s cubic-bezier(0.22, 1, 0.36, 1) 0.7s backwards;
}

@keyframes second2-title-in {
    from {
        opacity: 0;
        transform: translateY(0.55rem);
        clip-path: inset(0 0 100% 0);
    }

    to {
        opacity: 1;
        transform: none;
        clip-path: inset(-10% 0 0 0);
    }
}

/* 描述：上浮淡入 */
.second.is-in-view .second__desc {
    opacity: 1;
    animation: second2-desc-in 0.9s cubic-bezier(0.22, 1, 0.36, 1) 0.95s backwards;
}

@keyframes second2-desc-in {
    from {
        opacity: 0;
        transform: translateY(0.35rem);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

/* ---------- H5 适配 ---------- */
html[data-mode="h5"] .second {
    padding: 0.6rem 0.3rem 0.7rem;
}

html[data-mode="h5"] .second__inner {
    flex-direction: column;
}

html[data-mode="h5"] .second__img {
    flex: 0 0 auto;
    width: 100%;
    height: auto;
    aspect-ratio: 671 / 430;
}

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

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

html[data-mode="h5"] .second__desc {
    width: 100%;
    font-size: 0.22rem;
}

/* 系统开启"减少动态效果"时：直接显示，不做动画 */
@media (prefers-reduced-motion: reduce) {

    html.js .second__img,
    html.js .second__quote,
    html.js .second__title,
    html.js .second__desc,
    .second.is-in-view .second__img,
    .second.is-in-view .second__quote,
    .second.is-in-view .second__title,
    .second.is-in-view .second__desc {
        opacity: 1;
        transform: none;
        clip-path: none;
        filter: none;
        transition: none;
        animation: none;
    }
}

/* ============================================================
   第6屏：Building With Us, Responsibly（Figma 273_993：1920 x 612）
   全宽背景图 CTA 横幅 + 40% 黑色遮罩；居中标题 40px/600/#FFF（top 214）
   + 副标题 16px/#CCC（宽 794，top 273）
   + 橙色按钮 190x48（#EA5404 圆角 100，top 349）"Request a Quote" + ↗
   ============================================================ */
.sixth {
    position: relative;
    width: 100%;
    max-width: 19.2rem;
    height: 6.12rem; /* 612px */
    margin: 0 auto;
    overflow: hidden;
}

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

/* 40% 黑色遮罩 */
.sixth::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
    background: rgba(0, 0, 0, 0.4);
}

.sixth__inner {
    position: relative;
    z-index: 2;
    box-sizing: border-box;
    height: 100%;
    padding-top: 2.14rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* 标题：40px / 600 / #FFF */
.sixth__title {
    margin: 0;
    overflow: hidden;
    padding-bottom: 0.05rem;
    color: #FFF;
    font-family: Montserrat, sans-serif;
    font-size: 0.4rem;
    font-style: normal;
    font-weight: 600;
    line-height: normal;
    text-transform: capitalize;
}

.sixth__title span {
    display: inline-block;
}

/* 副标题：16px / 400 / #CCC，宽 794 居中 */
.sixth__sub {
    margin: 0.1rem auto 0;
    width: 7.94rem;
    color: #CCC;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem;
    font-style: normal;
    font-weight: 400;
    line-height: 1.5;
}

/* 按钮：190 x 48，#EA5404，圆角 100 */
.sixth__btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    box-sizing: border-box;
    width: max-content;
    height: 0.48rem;
    margin-top: 0.28rem;
    padding: 0 0.24rem;
    background: #EA5404;
    border-radius: 1rem;
    overflow: hidden;
    white-space: nowrap;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem;
    font-style: normal;
    font-weight: 400;
    line-height: 1;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
        background-color 0.35s ease;
}

.sixth__btn-label {
    position: relative;
    z-index: 1;
}

.sixth__btn-arrow {
    position: relative;
    z-index: 1;
    width: 0.2rem;
    height: 0.2rem;
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

/* 高光扫过层 */
.sixth__btn::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(115deg,
            transparent 30%,
            rgba(255, 255, 255, 0.45) 50%,
            transparent 70%);
    transform: translateX(-130%);
    pointer-events: none;
}

/* 按钮悬浮（无阴影）：回弹上浮 + 加深橙 + 高光扫过 + 箭头斜向飞出 */
.sixth__btn:hover {
    transform: translateY(-0.04rem);
    background: #D64A00;
}

.sixth__btn:hover::after {
    transform: translateX(130%);
    transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.sixth__btn:hover .sixth__btn-arrow {
    transform: translate(0.03rem, -0.03rem);
}

.sixth__btn:active {
    transform: translateY(0) scale(0.97);
}

/* ============================================================
   入场动效（common.js 滚动加 .is-in-view 触发）
   背景 Ken Burns + 遮罩淡入 → 标题蒙版揭示 → 副标题上浮 → 按钮回弹弹出
   ============================================================ */
html.js .sixth__title,
html.js .sixth__sub,
html.js .sixth__btn {
    opacity: 0;
}

.sixth::before {
    transform: scale(1.15);
    transition: transform 2s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: transform;
}

.sixth.is-in-view::before {
    transform: scale(1);
}

.sixth::after {
    opacity: 0;
    transition: opacity 1.2s ease 0.15s;
}

.sixth.is-in-view::after {
    opacity: 1;
}

/* 标题：蒙版揭示 */
.sixth.is-in-view .sixth__title {
    opacity: 1;
    animation: sixth-title-in 1s cubic-bezier(0.22, 1, 0.36, 1) 0.35s backwards;
}

@keyframes sixth-title-in {
    from {
        opacity: 0;
        transform: translateY(0.55rem);
        clip-path: inset(0 0 100% 0);
    }

    to {
        opacity: 1;
        transform: none;
        clip-path: inset(-10% 0 0 0);
    }
}

/* 副标题：上浮淡入 */
.sixth.is-in-view .sixth__sub {
    opacity: 1;
    animation: sixth-fade-up 0.9s cubic-bezier(0.22, 1, 0.36, 1) 0.7s backwards;
}

@keyframes sixth-fade-up {
    from {
        opacity: 0;
        transform: translateY(0.35rem);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

/* 按钮：回弹弹出 */
.sixth.is-in-view .sixth__btn {
    opacity: 1;
    animation: sixth-btn-in 0.7s cubic-bezier(0.34, 1.56, 0.64, 1) 0.95s backwards;
}

@keyframes sixth-btn-in {
    from {
        opacity: 0;
        transform: translateY(0.4rem) scale(0.6);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

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

html[data-mode="h5"] .sixth__inner {
    padding: 0.6rem 0.3rem 0.7rem;
}

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

html[data-mode="h5"] .sixth__sub {
    width: 100%;
    font-size: 0.22rem;
}

/* 系统开启"减少动态效果"时：直接显示，不做动画 */
@media (prefers-reduced-motion: reduce) {

    .sixth::before,
    .sixth.is-in-view::before {
        transform: none;
        transition: none;
    }

    .sixth::after,
    .sixth.is-in-view::after {
        opacity: 1;
        transition: none;
    }

    html.js .sixth__title,
    html.js .sixth__sub,
    html.js .sixth__btn,
    .sixth.is-in-view .sixth__title,
    .sixth.is-in-view .sixth__sub,
    .sixth.is-in-view .sixth__btn {
        opacity: 1;
        transform: none;
        clip-path: none;
        transition: none;
        animation: none;
    }

    .sixth__btn:hover {
        transform: none;
    }
}

/* ============================================================
   第3屏：Material Safety & Certifications（Figma 260_905：1920 x 557）
   全宽背景图；居中标题 40px/600/#333（top 128）
   + 副标题 16px/#666（宽 806，top 197）
   + 四个 230x230 认证徽章（间距 71，整体居中，top 257）
   徽章：麦穗圆形底图 + 两行居中文字 16px/600/#333
   ============================================================ */
.third {
    position: relative;
    box-sizing: border-box;
    width: 100%;
    max-width: 19.2rem;
    height: 5.57rem; /* 557px */
    margin: 0 auto;
    overflow: hidden;
}

/* 背景图层独立成层，便于 Ken Burns 缓推入场 */
.third::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    background: url("../assets/images/sustainability/third-img1.webp") no-repeat center / cover;
}

.third__inner {
    position: relative;
    z-index: 1;
    box-sizing: border-box;
    height: 100%;
    padding-top: 1.28rem;
    text-align: center;
}

/* 标题：40px / 600 / #333 */
.third__title {
    margin: 0;
    overflow: hidden;
    padding-bottom: 0.05rem;
    color: #333;
    font-family: Montserrat, sans-serif;
    font-size: 0.4rem;
    font-style: normal;
    font-weight: 600;
    line-height: normal;
    text-transform: capitalize;
}

.third__title span {
    display: inline-block;
}

/* 副标题：16px / 400 / #666，宽 806 居中 */
.third__sub {
    margin: 0.2rem auto 0;
    width: 8.06rem;
    color: #666;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem;
    font-style: normal;
    font-weight: 400;
    line-height: 1.5;
}

/* 四徽章：230 宽，间距 71，整体居中 */
.third__badges {
    display: flex;
    justify-content: center;
    gap: 0.71rem;
    width: 11.33rem;
    margin: 0.12rem auto 0;
    padding: 0;
    list-style: none;
}

/* 徽章：麦穗圆形底图 + 居中文字 */
.third__badge {
    position: relative;
    flex: 0 0 2.3rem;
    width: 2.3rem;
    height: 2.3rem;
    transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: transform;
}

.third__badge-img {
    position: absolute;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1),
        box-shadow 0.5s ease;
    will-change: transform;
}

.third__badge-name {
    position: absolute;
    inset: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #333;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem;
    font-style: normal;
    font-weight: 600;
    line-height: 1.3;
    text-align: center;
    transition: color 0.35s ease;
}

/* ---------- 徽章悬浮动效 ----------
   上浮 + 底图放大微旋 + 橙色光晕 + 文字变橙 */
.third__badge:hover {
    transform: translateY(-0.08rem);
}

.third__badge:hover .third__badge-img {
    transform: scale(1.08) rotate(4deg);
    box-shadow: 0 0.16rem 0.36rem rgba(234, 84, 4, 0.28);
}

.third__badge:hover .third__badge-name {
    color: #EA5404;
}

/* ============================================================
   入场动效（common.js 滚动加 .is-in-view 触发）
   背景 Ken Burns → 标题蒙版揭示 → 副标题上浮
   → 四徽章"盖章"式砸落回弹错峰 → 徽章文字错峰浮现
   ============================================================ */
html.js .third__title,
html.js .third__sub,
html.js .third__badge,
html.js .third__badge-name {
    opacity: 0;
}

.third::before {
    transform: scale(1.12);
    transition: transform 2s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: transform;
}

.third.is-in-view::before {
    transform: scale(1);
}

/* 标题：蒙版揭示 */
.third.is-in-view .third__title {
    opacity: 1;
    animation: third2-title-in 1s cubic-bezier(0.22, 1, 0.36, 1) 0.15s backwards;
}

@keyframes third2-title-in {
    from {
        opacity: 0;
        transform: translateY(0.55rem);
        clip-path: inset(0 0 100% 0);
    }

    to {
        opacity: 1;
        transform: none;
        clip-path: inset(-10% 0 0 0);
    }
}

/* 副标题：上浮淡入 */
.third.is-in-view .third__sub {
    opacity: 1;
    animation: third2-fade-up 0.9s cubic-bezier(0.22, 1, 0.36, 1) 0.45s backwards;
}

@keyframes third2-fade-up {
    from {
        opacity: 0;
        transform: translateY(0.35rem);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

/* 四徽章：盖章式砸落回弹，错峰 */
.third.is-in-view .third__badge {
    opacity: 1;
    animation: third2-stamp-in 0.7s cubic-bezier(0.34, 1.56, 0.64, 1) backwards;
}

.third.is-in-view .third__badge:nth-child(1) { animation-delay: 0.6s; }
.third.is-in-view .third__badge:nth-child(2) { animation-delay: 0.75s; }
.third.is-in-view .third__badge:nth-child(3) { animation-delay: 0.9s; }
.third.is-in-view .third__badge:nth-child(4) { animation-delay: 1.05s; }

@keyframes third2-stamp-in {
    from {
        opacity: 0;
        transform: scale(1.7) rotate(10deg);
        filter: blur(0.06rem);
    }

    70% {
        opacity: 1;
        filter: blur(0);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

/* 徽章文字：错峰浮现 */
.third.is-in-view .third__badge-name {
    opacity: 1;
    animation: third2-fade-up 0.7s cubic-bezier(0.22, 1, 0.36, 1) backwards;
}

.third.is-in-view .third__badge:nth-child(1) .third__badge-name { animation-delay: 0.8s; }
.third.is-in-view .third__badge:nth-child(2) .third__badge-name { animation-delay: 0.95s; }
.third.is-in-view .third__badge:nth-child(3) .third__badge-name { animation-delay: 1.1s; }
.third.is-in-view .third__badge:nth-child(4) .third__badge-name { animation-delay: 1.25s; }

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

html[data-mode="h5"] .third__inner {
    padding: 0.6rem 0.3rem 0.7rem;
}

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

html[data-mode="h5"] .third__sub {
    width: 100%;
    font-size: 0.22rem;
}

html[data-mode="h5"] .third__badges {
    width: 100%;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.4rem;
}

html[data-mode="h5"] .third__badge {
    flex: 0 0 calc(50% - 0.2rem);
    width: calc(50% - 0.2rem);
    height: auto;
    aspect-ratio: 1;
}

html[data-mode="h5"] .third__badge-name {
    font-size: 0.24rem;
}

/* 系统开启"减少动态效果"时：直接显示，不做动画 */
@media (prefers-reduced-motion: reduce) {

    .third::before,
    .third.is-in-view::before {
        transform: none;
        transition: none;
    }

    html.js .third__title,
    html.js .third__sub,
    html.js .third__badge,
    html.js .third__badge-name,
    .third.is-in-view .third__title,
    .third.is-in-view .third__sub,
    .third.is-in-view .third__badge,
    .third.is-in-view .third__badge-name {
        opacity: 1;
        transform: none;
        clip-path: none;
        filter: none;
        transition: none;
        animation: none;
    }

    .third__badge:hover {
        transform: none;
    }
}

/* ============================================================
   第4屏：Material Safety && Certifications（Figma 273_983：1920 x 736）
   背景白→#F2F3ED 渐变；居中标题 40px/600/#333 + 副标题 16px/#666（宽 806）
   两张 671x350 卡片（间距 58）：常态白卡，悬浮变橙卡 #EA5404 上浮 18px
   + 图标白圆环显现 + 左下 01/02 大数字（100px 白 10%）+ 文字变白
   ============================================================ */
.fourth {
    box-sizing: border-box;
    width: 100%;
    max-width: 19.2rem;
    margin: 0 auto;
    padding: 1rem 2.6rem 1.09rem;
    /* 100 / 260 / 109 */
    background: linear-gradient(0deg, #F2F3ED 0%, #FFF 82%);
}

.fourth__head {
    margin: 0 auto 0.6rem;
    text-align: center;
}

/* 标题：40px / 600 / #333 */
.fourth__title {
    margin: 0;
    overflow: hidden;
    padding-bottom: 0.05rem;
    color: #333;
    font-family: Montserrat, sans-serif;
    font-size: 0.4rem;
    font-style: normal;
    font-weight: 600;
    line-height: normal;
    text-transform: capitalize;
}

.fourth__title span {
    display: inline-block;
}

/* 副标题：16px / 400 / #666，宽 806 居中 */
.fourth__sub {
    margin: 0.2rem auto 0;
    width: 8.06rem;
    color: #666;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem;
    font-style: normal;
    font-weight: 400;
    line-height: 1.5;
}

/* 卡片行：间距 58 */
.fourth__cards {
    display: flex;
    justify-content: center;
    gap: 0.58rem;
}

/* 卡片：671 x 350，常态白卡 */
.fourth__card {
    position: relative;
    box-sizing: border-box;
    width: 6.71rem;
    height: 4.5rem;
    background: #FFF;
    border: 1px solid #D9D9D9;
    border-radius: 0.1rem;
    cursor: pointer;
    transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1),
        background-color 0.45s ease,
        border-color 0.45s ease,
        box-shadow 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: transform;
}

/* 悬浮/键盘聚焦：橙卡效果 —— 上浮 18px + 橙背景 + 阴影 */
.fourth__card:hover,
.fourth__card:focus-visible {
    background: #EA5404;
    border-color: #EA5404;
    transform: translateY(-0.18rem);
    box-shadow: 0 0.24rem 0.48rem rgba(234, 84, 4, 0.28);
}

/* 图标槽：100 x 100 圆环，常态隐藏，悬浮白色圆环显现 */
.fourth__icon {
    position: absolute;
    left: 0.42rem;
    top: 0.44rem;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1rem;
    height: 1rem;
    border: 1px solid transparent;
    border-radius: 50%;
    transition: border-color 0.45s ease, transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* 图标：内联 SVG，默认 #666（白卡可见），悬浮橙底变白 */
.fourth__icon {
    color: #666;
}

.fourth__icon svg {
    display: block;
    width: 0.4rem;
    height: 0.4rem;
    fill: currentColor;
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), color 0.45s ease;
}

.fourth__card:hover .fourth__icon,
.fourth__card:focus-visible .fourth__icon {
    border-color: #FFF;
    color: #FFF;
}

.fourth__card:hover .fourth__icon svg,
.fourth__card:focus-visible .fourth__icon svg {
    transform: scale(1.1);
}

/* 左下大数字：100px / 600，常态隐藏，悬浮白色 10% 显现 */
.fourth__num {
    position: absolute;
    left: 0.44rem;
    top: 2.46rem;
    color: #FFF;
    font-family: Montserrat, sans-serif;
    font-size: 1rem;
    font-style: normal;
    font-weight: 600;
    line-height: 1;
    opacity: 0;
    transform: translateY(0.2rem);
    transition: opacity 0.5s ease 0.05s, transform 0.5s cubic-bezier(0.22, 1, 0.36, 1) 0.05s;
    pointer-events: none;
}

.fourth__card:hover .fourth__num,
.fourth__card:focus-visible .fourth__num {
    opacity: 0.1;
    transform: translateY(0);
}

/* 内容区：left 226 / top 66 / 宽 382 */
.fourth__body {
    position: absolute;
    left: 2.26rem;
    top: 0.66rem;
    width: 3.82rem;
}

/* 卡片标题：24px / 600，常态 #333 → 悬浮白 */
.fourth__card-title {
    margin: 0;
    color: #333;
    font-family: Montserrat, sans-serif;
    font-size: 0.24rem;
    font-style: normal;
    font-weight: 600;
    line-height: 1.4;
    transition: color 0.45s ease;
}

/* 分隔线：宽 365 / 1px，位于卡片 top 153 */
.fourth__line {
    margin: 0.3rem 0;
    display: block;
    width: 3.65rem;
    height: 1px;
    background: #E6E6E6;
    transform-origin: left center;
    transition: background-color 0.45s ease;
}

/* 卡片描述：16px，位于卡片 top 178，宽 365 */
.fourth__card-desc {
    margin: 0;
    color: #666;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem;
    font-style: normal;
    font-weight: 400;
    line-height: 1.5;
    transition: color 0.45s ease;
}

.fourth__card:hover .fourth__card-title,
.fourth__card:focus-visible .fourth__card-title,
.fourth__card:hover .fourth__card-desc,
.fourth__card:focus-visible .fourth__card-desc {
    color: #FFF;
}

.fourth__card:hover .fourth__line,
.fourth__card:focus-visible .fourth__line {
    background: rgba(255, 255, 255, 0.3);
}

/* ============================================================
   入场动效（common.js 滚动加 .is-in-view 触发）
   标题蒙版揭示 → 副标题模糊上浮 → 两卡左右滑入（错峰）
   → 卡内图标回弹 + 分隔线左展开 + 文字错峰淡入
   ============================================================ */
html.js .fourth__title,
html.js .fourth__sub,
html.js .fourth__card,
html.js .fourth__icon,
html.js .fourth__line,
html.js .fourth__card-title,
html.js .fourth__card-desc {
    opacity: 0;
}

/* 标题：蒙版揭示 */
.fourth.is-in-view .fourth__title {
    opacity: 1;
    animation: fourth-title-in 1s cubic-bezier(0.22, 1, 0.36, 1) 0.1s backwards;
}

@keyframes fourth-title-in {
    from {
        opacity: 0;
        transform: translateY(0.55rem);
        clip-path: inset(0 0 100% 0);
    }

    to {
        opacity: 1;
        transform: none;
        clip-path: inset(-10% 0 0 0);
    }
}

/* 副标题：模糊上浮 */
.fourth.is-in-view .fourth__sub {
    opacity: 1;
    animation: fourth-sub-in 0.9s cubic-bezier(0.22, 1, 0.36, 1) 0.35s backwards;
}

@keyframes fourth-sub-in {
    from {
        opacity: 0;
        transform: translateY(0.35rem);
        filter: blur(0.04rem);
    }

    to {
        opacity: 1;
        transform: none;
        filter: none;
    }
}


.fourth.is-in-view .fourth__card {
    opacity: 1;
    transform: none;
    transition: opacity 0.8s ease, transform 1s cubic-bezier(0.22, 1, 0.36, 1),
        background-color 0.45s ease, border-color 0.45s ease,
        box-shadow 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.fourth.is-in-view .fourth__card:nth-child(1) {
    transition-delay: 0.55s, 0.55s, 0s, 0s, 0s;
}

.fourth.is-in-view .fourth__card:nth-child(2) {
    transition-delay: 0.75s, 0.75s, 0s, 0s, 0s;
}

/* 卡片悬浮上移与入场 transform 冲突处理：入场完成后由 hover 接管 */
.fourth.is-in-view .fourth__card:hover,
.fourth.is-in-view .fourth__card:focus-visible {
    transform: translateY(-0.18rem);
    transition-delay: 0s;
}

/* 图标：回弹弹入（两卡错峰） */
.fourth.is-in-view .fourth__icon {
    opacity: 1;
    animation: fourth-icon-in 0.7s cubic-bezier(0.34, 1.56, 0.64, 1) backwards;
}

.fourth.is-in-view .fourth__card:nth-child(1) .fourth__icon {
    animation-delay: 1s;
}

.fourth.is-in-view .fourth__card:nth-child(2) .fourth__icon {
    animation-delay: 1.2s;
}

@keyframes fourth-icon-in {
    from {
        opacity: 0;
        transform: scale(0.2) rotate(-90deg);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

/* 分隔线：自左展开 */
.fourth.is-in-view .fourth__line {
    opacity: 1;
    animation: fourth-line-in 0.8s cubic-bezier(0.22, 1, 0.36, 1) backwards;
}

.fourth.is-in-view .fourth__card:nth-child(1) .fourth__line {
    animation-delay: 1.15s;
}

.fourth.is-in-view .fourth__card:nth-child(2) .fourth__line {
    animation-delay: 1.35s;
}

@keyframes fourth-line-in {
    from {
        opacity: 1;
        transform: scaleX(0);
    }

    to {
        opacity: 1;
        transform: scaleX(1);
    }
}

/* 卡片文字：错峰淡入上浮 */
.fourth.is-in-view .fourth__card-title,
.fourth.is-in-view .fourth__card-desc {
    opacity: 1;
    animation: fourth-text-in 0.7s cubic-bezier(0.22, 1, 0.36, 1) backwards;
}

.fourth.is-in-view .fourth__card:nth-child(1) .fourth__card-title {
    animation-delay: 1.05s;
}

.fourth.is-in-view .fourth__card:nth-child(1) .fourth__card-desc {
    animation-delay: 1.2s;
}

.fourth.is-in-view .fourth__card:nth-child(2) .fourth__card-title {
    animation-delay: 1.25s;
}

.fourth.is-in-view .fourth__card:nth-child(2) .fourth__card-desc {
    animation-delay: 1.4s;
}

@keyframes fourth-text-in {
    from {
        opacity: 0;
        transform: translateY(0.25rem);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

/* ---------- H5 适配（750 设计稿基准） ---------- */
html[data-mode="h5"] .fourth {
    padding: 0.6rem 0.3rem 0.7rem;
}

html[data-mode="h5"] .fourth__sub {
    width: 100%;
    font-size: 0.22rem;
}

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

html[data-mode="h5"] .fourth__card {
    width: 100%;
    height: auto;
    padding: 0.4rem 0.3rem 0.5rem;
}

html[data-mode="h5"] .fourth__icon {
    position: static;
}

html[data-mode="h5"] .fourth__num {
    top: auto;
    bottom: 0.2rem;
    font-size: 0.8rem;
}

html[data-mode="h5"] .fourth__body {
    position: static;
    width: 100%;
    margin-top: 0.3rem;
}

html[data-mode="h5"] .fourth__line {
    position: static;
    width: 100%;
    margin: 0.24rem 0;
}

/* 系统开启"减少动态效果"时：直接显示，不做动画 */
@media (prefers-reduced-motion: reduce) {

    html.js .fourth__title,
    html.js .fourth__sub,
    html.js .fourth__card,
    html.js .fourth__icon,
    html.js .fourth__line,
    html.js .fourth__card-title,
    html.js .fourth__card-desc,
    html.js .fourth__card:nth-child(1),
    html.js .fourth__card:nth-child(2) {
        opacity: 1;
        transform: none;
        clip-path: none;
        filter: none;
        transition: none;
        animation: none;
    }

    .fourth__card:hover,
    .fourth__card:focus-visible {
        transform: none;
    }
}

/* ============================================================
   第5屏：Waste & Circularity（Figma 275_1003：1212 x 501）
   padding 100/0；内容水平居中；左图 554x501（圆角 20）+ 间距 115
   + 右内容区（垂直居中）：回收图标 100x100（3 层 SVG 组合）
   → 标题 40px/600/#333（图标下 21）→ 描述 16px/400/#666（宽 543）
   ============================================================ */
.fifith {
    box-sizing: border-box;
    width: 100%;
    max-width: 19.2rem;
    margin: 0 auto;
    padding: 1rem 0;
    /* 100px 0 */
}

.fifith__inner {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 左图：554 x 501，圆角 20 */
.fifith__img {
    flex: 0 0 5.54rem;
    display: block;
    width: 5.54rem;
    height: 5.01rem;
    border-radius: 0.2rem;
    object-fit: cover;
}

/* 右内容区：间距 115，垂直居中 */
.fifith__content {
    flex: 0 1 5.43rem;
    min-width: 0;
    margin-left: 1.15rem;
}

/* 回收图标：100 x 100，三层 SVG 组合 */
.fifith__icon {
    position: relative;
    width: 1rem;
    height: 1rem;
}

.fifith__icon-layer {
    position: absolute;
    display: block;
}

.fifith__icon-layer--1 {
    left: 0.1171rem;
    top: 0.118rem;
    width: 0.77rem;
    height: 0.77rem;
}

.fifith__icon-layer--2 {
    left: 0.2831rem;
    top: 0.1788rem;
    width: 0.55rem;
    height: 0.66rem;
}

.fifith__icon-layer--3 {
    left: 0.5765rem;
    top: 0.2333rem;
    width: 0.11rem;
    height: 0.11rem;
}

/* 标题：40px / 600 / #333，图标下 21 */
.fifith__title {
    margin: 0.21rem 0 0;
    overflow: hidden;
    padding-bottom: 0.05rem;
    color: #333;
    font-family: Montserrat, sans-serif;
    font-size: 0.4rem;
    font-style: normal;
    font-weight: 600;
    line-height: normal;
    text-transform: capitalize;
}

.fifith__title span {
    display: inline-block;
}

/* 描述：16px / 400 / #666，宽 543，标题下 21 */
.fifith__desc {
    margin: 0.21rem 0 0;
    color: #666;
    font-family: Montserrat, sans-serif;
    font-size: 0.16rem;
    font-style: normal;
    font-weight: 400;
    line-height: 1.5;
}

/* ============================================================
   入场动效（common.js 滚动加 .is-in-view 触发）
   图片旋转擦除揭示 + 模糊聚焦 → 图标三层弹性旋入（错峰）
   → 图标外层持续缓旋 → 标题蒙版揭示 → 描述模糊上浮
   ============================================================ */
html.js .fifith__img,
html.js .fifith__icon-layer,
html.js .fifith__title,
html.js .fifith__desc {
    opacity: 0;
}

/* 图片：旋转 + 右侧擦除揭示 + 模糊缩放聚焦 */
.fifith.is-in-view .fifith__img {
    opacity: 1;
    animation: fifth-img-in 1.2s cubic-bezier(0.22, 1, 0.36, 1) 0.15s backwards;
}

@keyframes fifth-img-in {
    from {
        opacity: 0;
        filter: blur(0.12rem) brightness(1.2);
        transform: scale(0.86) rotate(-3deg);
        clip-path: inset(0 0 0 100%);
    }

    60% {
        opacity: 1;
        filter: blur(0);
    }

    to {
        opacity: 1;
        filter: none;
        transform: none;
        clip-path: inset(0 0 0 0);
    }
}

/* 图标三层：错峰弹性旋入（不同初始角度，回弹落位） */
.fifith.is-in-view .fifith__icon-layer {
    opacity: 1;
    transform-origin: center;
}

.fifith.is-in-view .fifith__icon-layer--1 {
    animation: fifth-icon1-in 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) 0.55s backwards;
}

.fifith.is-in-view .fifith__icon-layer--2 {
    animation: fifth-icon2-in 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) 0.68s backwards;
}

.fifith.is-in-view .fifith__icon-layer--3 {
    animation: fifth-icon3-in 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) 0.81s backwards;
}

@keyframes fifth-icon1-in {
    from {
        opacity: 0;
        transform: scale(0.2) rotate(-180deg);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

@keyframes fifth-icon2-in {
    from {
        opacity: 0;
        transform: scale(0.2) rotate(180deg) translateX(-0.2rem);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

@keyframes fifth-icon3-in {
    from {
        opacity: 0;
        transform: scale(0) rotate(540deg);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

/* 图标外层：落位后持续缓旋（循环利用感），悬浮加速 */
.fifith.is-in-view .fifith__icon {
    animation: fifth-icon-spin 14s linear infinite;
}

@keyframes fifth-icon-spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.fifith__icon:hover {
    animation-duration: 3s;
}

/* 标题：蒙版揭示 + 上浮 */
.fifith.is-in-view .fifith__title {
    opacity: 1;
    animation: fifth-title-in 1s cubic-bezier(0.22, 1, 0.36, 1) 0.85s backwards;
}

@keyframes fifth-title-in {
    from {
        opacity: 0;
        transform: translateY(0.55rem);
        clip-path: inset(0 0 100% 0);
    }

    to {
        opacity: 1;
        transform: none;
        clip-path: inset(-10% 0 0 0);
    }
}

/* 描述：模糊上浮淡入 */
.fifith.is-in-view .fifith__desc {
    opacity: 1;
    animation: fifth-desc-in 0.9s cubic-bezier(0.22, 1, 0.36, 1) 1.1s backwards;
}

@keyframes fifth-desc-in {
    from {
        opacity: 0;
        transform: translateY(0.35rem);
        filter: blur(0.04rem);
    }

    to {
        opacity: 1;
        transform: none;
        filter: none;
    }
}

/* ---------- H5 适配（750 设计稿基准） ---------- */
html[data-mode="h5"] .fifith {
    padding: 0.6rem 0.3rem;
}

html[data-mode="h5"] .fifith__inner {
    flex-direction: column;
}

html[data-mode="h5"] .fifith__img {
    flex: 0 0 auto;
    width: 100%;
    height: auto;
    aspect-ratio: 554 / 501;
}

html[data-mode="h5"] .fifith__content {
    flex: 0 0 auto;
    margin: 0.4rem 0 0;
}

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

html[data-mode="h5"] .fifith__desc {
    font-size: 0.22rem;
}

/* 系统开启"减少动态效果"时：直接显示，不做动画 */
@media (prefers-reduced-motion: reduce) {

    html.js .fifith__img,
    html.js .fifith__icon-layer,
    html.js .fifith__title,
    html.js .fifith__desc,
    .fifith.is-in-view .fifith__img,
    .fifith.is-in-view .fifith__icon-layer,
    .fifith.is-in-view .fifith__title,
    .fifith.is-in-view .fifith__desc,
    .fifith.is-in-view .fifith__icon {
        opacity: 1;
        transform: none;
        clip-path: none;
        filter: none;
        transition: none;
        animation: none;
    }
}