section.sec1 {
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-height: 100vh;
    padding-top: var(--header-height-max);
    overflow: hidden;
    color: #fff;
    background: #000;
    box-sizing: border-box;
}

/* 兜底：防止小数像素取整导致 sec1/sec2 之间露出 1px 间隙 */
section.sec1::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 2px;
    background: #000;
    pointer-events: none;
    z-index: 30;
}

.sec1-bg {
    position: absolute;
    inset: 0;
    z-index: 10;
    pointer-events: none;
}

.sec1-bg::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 3;
    background: rgba(0, 0, 0, 0.28);
    pointer-events: none;
}

.sec1-bg img {
    position: absolute;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.sec1-bg .bg2 {
    z-index: 2;
}

.sec1-bg .shade-top {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: calc(480 * var(--rpx));
    opacity: 0.6;
    /* 顶部遮罩：自上向下渐隐 */
    background: linear-gradient(180deg, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0) 100%);
    z-index: 4;
}

.sec1-bg .shade-bottom {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: calc(666 * var(--rpx));
    opacity: 0.7;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 1) 100%);
    z-index: 4;
}

.sec1-inner {
    position: relative;
    z-index: 20;
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.sec1-inner .breadcrumbs {
    flex: 0 0 auto;
}

.sec1-hero {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    text-align: center;
    row-gap: calc(44 * var(--rpx));
    padding: calc(24 * var(--rpx)) 0 calc(120 * var(--rpx-50));
}

.sec1-corner {
    flex: 0 0 auto;
    align-self: flex-end;
    width: 100%;
    display: flex;
    justify-content: flex-end;
    padding-bottom: calc(52 * var(--rpx));
}

/* 与 Pixso 72:2041 稿中 fontWeight 一致 */
.sec1-inner .breadcrumbs,
.sec1-inner .breadcrumbs a,
.sec1-inner .breadcrumbs li,
.sec1-inner .breadcrumbs li span {
    font-weight: 300;
}

.sec1-title {
    margin: 0;
    font-size: calc(68 * var(--fpx-50));
    line-height: calc(80 * var(--fpx-50));
    font-weight: 700;
    letter-spacing: 0;
    text-align: center;
    white-space: nowrap;
    max-width: 100%;
}

.sec1-sub {
    margin: 0;
    font-size: calc(48 * var(--fpx-50));
    line-height: calc(68 * var(--fpx-50));
    font-weight: 300;
    text-align: center;
    white-space: nowrap;
    max-width: 100%;
}

.sec1-btn {
    margin: 0;
    flex: 0 0 auto;
    width: calc(180 * var(--rpx));
    height: calc(50 * var(--rpx));
    border: 1px solid rgba(255, 255, 255, 1);
    border-radius: calc(3 * var(--rpx));
    display: flex;
    align-items: center;
    justify-content: center;
    gap: calc(12 * var(--rpx));
    color: #fff;
    text-decoration: none;
}

.sec1-btn.btn-more {
    /* 覆盖 global.css 的 btn-more（默认是竖排 + 带箭头） */
    flex-direction: row;
    justify-content: center;
    padding-right: 0;
    padding-left: 0;
    white-space: nowrap;
}

.sec1-btn.btn-more::after {
    display: none;
    content: none;
}

.sec1-btn .btn-txt {
    font-size: calc(18 * var(--fpx-87));
    line-height: calc(21 * var(--fpx-87));
    font-weight: 700;
}

.sec1-btn .btn-ico {
    width: calc(18 * var(--rpx));
    height: calc(18 * var(--rpx));
    background: url("../images/icon_vid_play.svg") center/contain no-repeat;
    flex: 0 0 auto;
}

/* hero 右下角滚动提示（复用 global.css 的 .btn-scroll-hint） */
.sec1 .btn-scroll-hint {
    position: relative;
    right: auto;
    bottom: auto;
}

section.sec2 {
    position: relative;
    margin-top: -1px;
    padding-top: calc(800 * var(--rpx));
    padding-bottom: calc(40 * var(--rpx-50));
    color: #fff;
    background: #000;
    overflow: hidden;
}

.sec2-bg {
    position: absolute;
    inset: 0;
    z-index: 10;
    pointer-events: none;
    height: calc(1080 * var(--rpx));
}

.sec2-bg img {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sec2-bg .bg2 {
    height: calc(1080 * var(--rpx));
    opacity: 1;
    z-index: 2;
    mix-blend-mode: screen;
}

.sec2-bg .shade {
    position: absolute;
    left: 0;
    width: 100%;
    bottom: 0;
    z-index: 3;
    height: 30%;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 1) 100%);
}

.sec2-inner {
    position: relative;
    z-index: 20;
}

.sec2-name {
    font-size: calc(48 * var(--fpx-50));
    line-height: calc(57 * var(--fpx-50));
    font-weight: 700;
}

.sec2-role {
    margin-top: calc(22 * var(--rpx));
    font-size: calc(28 * var(--fpx-67));
    line-height: calc(38 * var(--fpx-67));
    font-weight: 700;
}

.sec2-bio {
    margin-top: calc(55 * var(--rpx));
    width: calc(640 * var(--rpx));
    max-width: 100%;
    max-height: calc(360 * var(--rpx));
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: calc(12 * var(--rpx));
    font-size: calc(20 * var(--fpx-75));
    line-height: calc(38 * var(--fpx-75));
}

.sec2-bio p + p {
    margin-top: calc(24 * var(--rpx));
}

.sec2-bio::-webkit-scrollbar {
    width: 4px;
    appearance: none;
}

.sec2-bio::-webkit-scrollbar-track {
    width: 4px;
    border-radius: 0;
    background: rgba(255, 255, 255, 0.25);
}

.sec2-bio::-webkit-scrollbar-thumb {
    width: 4px;
    border-radius: 0;
    background: var(--theme-red);
}

.sec2-bio::-webkit-scrollbar-button {
    width: 0;
    height: 0;
    display: none;
}

.sec2-bio::-webkit-scrollbar-thumb:hover {
    background: #ff3a33;
}

.sec2-honor {
    margin-top: calc(80 * var(--rpx));
}

.sec2-honor .grid { 
    width: calc(1600 * var(--rpx));
    max-width: 100%;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
}

.sec2-honor .item {
    position: relative;
    min-height: calc(240 * var(--rpx));
    padding: calc(40 * var(--rpx)) calc(24 * var(--rpx));
    display: flex;
    align-items: center;
    gap: calc(15 * var(--rpx));
}

.sec2-honor .item:nth-child(-n+3) {
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.sec2-honor .item:not(:nth-child(3n)) {
    border-right: 1px solid rgba(255, 255, 255, 0.3);
}

.sec2-honor .ico {
    width: calc(22 * var(--rpx));
    height: calc(44 * var(--rpx));
    opacity: 0.5;
    background-position: center;
    background-repeat: no-repeat;
    background-size: contain;
    flex: 0 0 auto;
}

.sec2-honor .ico-q1 {
    background-image: url("../images/founder/pixso/icon22.webp");
}

.sec2-honor .ico-q2 {
    background-image: url("../images/founder/pixso/icon21.webp");
}

.sec2-honor .txt {
    flex: 1 1 auto;
    text-align: center;
}

.sec2-honor .l1,
.sec2-honor .l2 {
    font-size: calc(28 * var(--fpx-67));
    line-height: calc(38 * var(--fpx-67));
    font-weight: 700;
    font-family: Poppins, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

section.sec3 {
    position: relative;
    padding-top: calc(40 * var(--rpx-50));
    padding-bottom: calc(40 * var(--rpx-50));
    background: #fff;
    color: #252525;
    overflow: hidden;
}

.sec3-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: url("../images/founder/sec3_back.webp") center top/100% auto no-repeat;
    filter: grayscale(1);
    opacity: 1;
}

.sec3-bg::after{

}

.sec3 .wrapper {
    position: relative;
    z-index: 10;
}

.sec3-title {
    font-size: calc(48 * var(--fpx-50));
    line-height: calc(57 * var(--fpx-50));
    font-weight: 700;
}

.sec3-body {
    margin-top: calc(56 * var(--rpx));
    display: grid;
    /*
     * 响应式策略：左侧（书图）优先缩小，右侧（文案/卖点）尽量保持宽度
     * 这样在变窄时 line2 更不容易换行
     */
    grid-template-columns:
    minmax(calc(360 * var(--rpx)), calc(716 * var(--rpx)))
    minmax(calc(560 * var(--rpx)), 1fr);
    gap: calc(60 * var(--rpx));
    /* 让右侧 points 与左侧书图垂直对齐 */
    align-items: center;
}

.sec3-books {
    width: 100%;
    height: auto;
    display: block;
}

.sec3-points {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    min-width: 0;
}

.sec3-tag {
    width: calc(331 * var(--rpx));
    max-width: 100%;
    height: auto;
    display: block;
}

.sec3-grid3 {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr;
    gap: calc(20 * var(--rpx));
    /* 让三列卖点在垂直方向对齐 */
    align-items: stretch;
}

.sec3-grid3 .p {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    min-width: 0;
}

.sec3-grid3 .vline {
    width: 1px;
    height: calc(80 * var(--rpx));
    background: rgba(0, 0, 0, 0.1);
}

.sec3-grid3 .p .line1 {
    font-size: calc(28 * var(--fpx-67));
    line-height: calc(38 * var(--fpx-67));
    font-weight: 700;
    color: var(--theme-red);
    text-align: center;
    white-space: nowrap;
}

.sec3-grid3 .p .line2 {
    margin-top: calc(10 * var(--rpx));
    font-size: calc(20 * var(--fpx-75));
    line-height: calc(38 * var(--fpx-75));
    font-weight: 400;
    color: #252525;
    text-align: center;
    /* 尽量不换行 */
    white-space: nowrap;
    /* 统一占位高度：即使不得不换行，也让 3 个 .p 底部对齐 */
    min-height: calc(38 * var(--rpx));
    max-width: 100%;
}

.sec3-author {
    margin-top: calc(28 * var(--rpx));
    margin-bottom: calc(36 * var(--rpx));
    font-size: calc(28 * var(--fpx-67));
    line-height: calc(34 * var(--fpx-67));
    font-weight: 700;
    color: #252525;
    text-align: center;
}

section.sec4 {
    padding-top: calc(40 * var(--rpx-50));
    padding-bottom: calc(40 * var(--rpx-50));
    background: #fff;
    color: #252525;
    /* 外层收口横向溢出；内部 swiper 保持 visible 以便阴影/圆角等不被裁切 */
    overflow: hidden;
}

/* 仅 founder 页：避免移动端横向溢出导致页面可左右滑动 */
body.action--site-founder,
body[class*="action--site-founder"] {
    overflow-x: hidden;
}

.sec4-title {
    font-size: calc(48 * var(--fpx-50));
    line-height: calc(57 * var(--fpx-50));
    font-weight: 700;
}

.sec4-grid {
    margin-top: calc(56 * var(--rpx));
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: calc(60 * var(--rpx)) calc(40 * var(--rpx));
}

/* 桌面：即使 sec4 使用 swiper 结构，也保持 grid 布局 */
.sec4-swiper .swiper-wrapper.sec4-grid {
    width: 100%;
}

.sec4-swiper .swiper-slide.card {
    height: auto;
}

.sec4 .card {
    text-decoration: none;
    color: inherit;
}

.sec4 .tag {
    margin-top: calc(12 * var(--rpx));
    font-size: calc(16 * var(--fpx-87));
    line-height: calc(38 * var(--fpx-87));
    font-weight: 300;
    color: var(--theme-red);
}

.sec4 .cover {
    position: relative;
    width: 100%;
    aspect-ratio: 780 / 439;
    border-radius: calc(30 * var(--rpx));
    overflow: hidden;
    background: #c0c0c0;
}

.sec4 .cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.45s ease;
}

.sec4 .card:hover .cover img {
    transform: scale(1.06);
}

.sec4 .play {
    position: absolute;
    right: calc(30 * var(--rpx));
    bottom: calc(30 * var(--rpx));
    width: calc(60 * var(--rpx));
    height: calc(60 * var(--rpx));
    background: url("../images/founder/pixso/Group_72_2191.webp") center/contain no-repeat;
    transition: filter 0.28s ease;
    filter: brightness(0) invert(1);
}

.sec4 .card:hover .play {
    filter: brightness(0) saturate(100%) invert(13%) sepia(94%) saturate(7151%) hue-rotate(349deg) brightness(93%) contrast(88%);
}

.sec4 .card:nth-child(1) .play {
    background-image: url("../images/founder/pixso/Group_72_2191.webp");
}

.sec4 .card:nth-child(2) .play {
    background-image: url("../images/founder/pixso/Group_72_2195.webp");
}

.sec4 .card:nth-child(3) .play {
    background-image: url("../images/founder/pixso/Group_72_2183.webp");
}

.sec4 .card:nth-child(4) .play {
    background-image: url("../images/founder/pixso/Group_72_2187.webp");
}

.sec4 .title {
    margin-top: calc(12 * var(--rpx));
    font-size: calc(28 * var(--fpx-67));
    line-height: calc(34 * var(--fpx-67));
    font-weight: 700;
}

section.sec5 {
    position: relative;
    padding-top: calc(40 * var(--rpx-50));
    padding-bottom: calc(72 * var(--rpx-50));
    background: #fff;
    color: #252525;
    overflow: hidden;
}

.sec5 .wrapper {
    position: relative;
}

.sec5-head {
    display: block;
}

.sec5-title {
    font-size: calc(48 * var(--fpx-50));
    line-height: calc(57 * var(--fpx-50));
    font-weight: 700;
}

.sec5-swiper-wrap {
    margin-top: calc(56 * var(--rpx));
    overflow: visible;
}

.sec5-swiper.swiper {
    overflow: visible !important;
}

.sec5-swiper .swiper-slide {
    width: calc(480 * var(--rpx));
    height: auto;
}

.sec5-gap-ref {
    position: absolute;
    left: -9999px;
    top: 0;
    width: calc(80 * var(--rpx));
    height: 1px;
    overflow: hidden;
    pointer-events: none;
    visibility: hidden;
}

.sec5 .ins {
    position: relative;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
    height: calc(640 * var(--rpx));
    border-radius: calc(30 * var(--rpx));
    overflow: hidden;
    color: #fff;
    text-decoration: none;
    background: #111;
}

.sec5 .ins-bg {
    grid-area: 1 / 1 / -1 / -1;
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    transform: scale(1);
    transition: transform 0.6s ease;
}

.sec5 .ins-layer {
    grid-area: 1 / 1 / -1 / -1;
    position: relative;
    z-index: 2;
    box-sizing: border-box;
    height: 100%;
    width: 100%;
    padding: calc(40 * var(--rpx)) calc(30 * var(--rpx)) calc(40 * var(--rpx));
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.sec5 .ins-layer::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    opacity: 0.8;
    background: linear-gradient(180deg, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0) 55%, rgba(0, 0, 0, 0.35) 100%);
    pointer-events: none;
}

.sec5 .date {
    margin-top: calc(15 * var(--rpx));
    font-size: calc(16 * var(--fpx-87));
    line-height: calc(18 * var(--fpx-87));
    font-weight: 300;
}

.sec5 .line {
    width: 100%;
    max-width: calc(420 * var(--rpx));
    height: 1px;
    opacity: 0.3;
    background: rgba(255, 255, 255, 1);
}

.sec5 .txt {
    margin-top: calc(26 * var(--rpx));
    width: 100%;
    max-width: calc(420 * var(--rpx));
    font-size: calc(28 * var(--fpx-67));
    line-height: calc(38 * var(--fpx-67));
    font-weight: 700;
    transition: transform 0.45s ease;
}

/* hover：洞见卡片更有质感（仅 hover 设备） */
@media (hover: hover) and (pointer: fine) {
    .sec5 .ins {
        transition: transform 0.45s ease, box-shadow 0.45s ease;
    }

    .sec5 .ins:hover {
        transform: translate3d(0, -6px, 0);
        box-shadow: 0 calc(24 * var(--rpx)) calc(60 * var(--rpx)) rgba(0, 0, 0, 0.18);
    }

    .sec5 .ins:hover .ins-bg {
        transform: scale(1.06);
    }

    .sec5 .ins:hover .txt {
        transform: translate3d(0, -4px, 0);
    }
}

.sec5-nav {
    margin-top: calc(48 * var(--rpx));
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: calc(40 * var(--rpx));
}

.sec5-nav .arr {
    width: calc(50 * var(--rpx));
    height: calc(50 * var(--rpx));
    padding: 0;
    border: 0;
    background-color: transparent;
    background-position: center;
    background-size: contain;
    background-repeat: no-repeat;
    cursor: pointer;
}

.sec5-nav .arr-l {
    background-image: url("../images/founder/pixso/Frame_72_2131.webp");
}

.sec5-nav .arr-r {
    background-image: url("../images/founder/pixso/Frame_72_2133.webp");
}

.sec5-nav .swiper-button-disabled {
    opacity: 0.35;
    cursor: default;
}

.sec4-nav {
    display: none;
}

/* 笔记本 / 低矮视口：整体纵向更紧凑（仅缩布局与间距，不改 fpx 字号） */
@media (min-width: 751px) and (max-width: 1680px),
       (min-width: 751px) and (max-height: 1000px) {
    section.sec1 {
        height: 100vh;
        max-height: 100vh;
    }

    .sec1-bg .shade-top {
        height: min(calc(360 * var(--rpx)), 36vh);
    }

    .sec1-bg .shade-bottom {
        height: min(calc(520 * var(--rpx)), 52vh);
    }

    .sec1-hero {
        row-gap: calc(34 * var(--rpx));
        padding: calc(12 * var(--rpx)) 0;
    }

    .sec1-corner {
        padding-bottom: calc(40 * var(--rpx));
    }

    .sec2-role {
        margin-top: calc(16 * var(--rpx));
    }

    .sec2-bio {
        margin-top: calc(36 * var(--rpx));
        max-height: min(calc(300 * var(--rpx)), 38vh);
    }

    .sec2-honor {
        margin-top: calc(52 * var(--rpx));
    }

    .sec2-honor .item {
        min-height: calc(196 * var(--rpx));
        padding: calc(28 * var(--rpx)) calc(20 * var(--rpx));
    }

    .sec2-bg,
    .sec2-bg .bg2 {
        height: min(calc(960 * var(--rpx)), 140vh);
    }

    .sec3-body {
        margin-top: calc(40 * var(--rpx));
        gap: calc(40 * var(--rpx));
    }

    .sec4-grid {
        margin-top: calc(40 * var(--rpx));
        gap: calc(40 * var(--rpx)) calc(28 * var(--rpx));
    }

    .sec5-swiper-wrap {
        margin-top: calc(40 * var(--rpx));
    }

    .sec5 .ins {
        height: min(calc(560 * var(--rpx)), 62vh);
    }

    .sec5-nav {
        margin-top: calc(36 * var(--rpx));
    }
}

@media (max-width: 960px) {
    .sec3-body {
        grid-template-columns: 1fr;
        align-items: start;
    }

    .sec4-grid {
        grid-template-columns: 1fr;
    }

    .sec2-bio {
        width: 100%;
    }

    .sec2-bio-scroll-wrap {
        position: relative;
        width: 100%;
    }

    .sec2-bio-scroll-wrap .sec2-bio {
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

    .sec2-bio-scroll-wrap .sec2-bio::-webkit-scrollbar {
        width: 0;
        height: 0;
        display: none;
    }

    .sec2-bio-scroll-rail {
        position: absolute;
        right: 0;
        top: 0;
        bottom: 0;
        width: 4px;
        z-index: 2;
        pointer-events: none;
    }

    .sec2-bio-scroll-rail.is-scrollable .sec2-bio-scroll-thumb {
        pointer-events: auto;
        touch-action: none;
    }

    .sec2-bio-scroll-track {
        position: relative;
        width: 4px;
        height: 100%;
        background: rgba(255, 255, 255, 0.25);
    }

    .sec2-bio-scroll-thumb {
        position: absolute;
        left: 0;
        width: 4px;
        border-radius: 0;
        background: var(--theme-red);
        pointer-events: none;
    }

    .sec2-bio-scroll-thumb.is-dragging,
    .sec2-bio-scroll-thumb:active {
        background: #ff3a33;
    }

    .sec2-honor .grid {
        grid-template-columns: 1fr;
    }

    .sec2-honor .item {
        border-right: none !important;
    }

    .sec2-honor .item:nth-child(-n+3) {
        border-bottom: none;
    }

    .sec2-honor .item:not(:last-child) {
        border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    }
}

@media (max-width: 960px) and (hover: hover) and (pointer: fine) {
    .sec2-bio-scroll-thumb:hover {
        background: #ff3a33;
    }
}

@media (max-width: 750px) {
    section.sec1 {
        height: 100vh;
        max-height: 100vh;
    }

    .sec1-hero {
        row-gap: calc(32 * var(--rpx));
        padding: calc(16 * var(--rpx)) 0;
    }

    .sec1-corner {
        padding-bottom: calc(40 * var(--rpx));
    }

    /* 首屏按钮：参考全站 btn-more（更舒展） */
    .sec1-btn.btn-more {
        width: auto;
        min-width: calc(220em / 16);
        height: calc(60em / 16);
        padding-right: 0;
        padding-left: 0;
        gap: calc(12 * var(--rpx));
        border-radius: calc(6 * var(--rpx));
    }

    .sec1-btn.btn-more .btn-txt {
        font-size: calc(18 * var(--fpx-87));
        line-height: calc(21 * var(--fpx-87));
    }

    .sec1-btn.btn-more .btn-ico {
        display: inline-block;
        width: calc(22 * var(--rpx));
        height: calc(22 * var(--rpx));
    }

    .sec1-title,
    .sec1-sub {
        white-space: normal;
        width: calc(680 * var(--rpx));
        max-width: 92vw;
    }

    /* 创始人专著：手机端竖向且居中（标题仍然居左） */
    .sec3-body {
        grid-template-columns: 1fr;
        justify-items: center;
        align-items: start;
        gap: calc(40 * var(--rpx));
    }

    .sec3-books {
        max-width: min(92vw, calc(720 * var(--rpx)));
    }

    .sec3-points {
        max-width: 92vw;
    }

    .sec4-grid {
        gap: calc(40 * var(--rpx)) calc(24 * var(--rpx));
    }

    /* sec4：移动端用 swiper（桌面仍保持 grid 视觉） */
    .sec4-swiper {
        margin-top: calc(56 * var(--rpx));
        overflow: visible;
    }

    .sec4-swiper .swiper-wrapper.sec4-grid {
        display: flex;
        gap: 0;
        margin-top: 0;
    }

    .sec4-swiper .swiper-slide.card {
        width: calc(640 * var(--rpx));
        max-width: 86vw;
    }

    .sec4-nav {
        margin-top: calc(40 * var(--rpx));
        display: flex;
        justify-content: flex-start;
        align-items: center;
        gap: calc(24 * var(--rpx));
    }

    .sec4-nav .arr {
        width: calc(66 * var(--rpx));
        height: calc(66 * var(--rpx));
        padding: 0;
        border: 0;
        background-color: transparent;
        background-position: center;
        background-size: contain;
        background-repeat: no-repeat;
        cursor: pointer;
    }

    .sec4-nav .arr-l {
        background-image: url("../images/founder/pixso/Frame_72_2131.webp");
    }

    .sec4-nav .arr-r {
        background-image: url("../images/founder/pixso/Frame_72_2133.webp");
    }

    .sec4-nav .swiper-button-disabled {
        opacity: 0.35;
        cursor: default;
    }

    .sec5-swiper .swiper-slide {
        width: calc(640 * var(--rpx));
    }

    .sec5 .ins {
        height: calc(720 * var(--rpx));
    }

    .sec5-nav {
        gap: calc(24 * var(--rpx));
    }

    .sec5-nav .arr {
        width: calc(66 * var(--rpx));
        height: calc(66 * var(--rpx));
    }
}

/* 变窄时：让左侧缩更多、右侧缩更少 */
@media (max-width: 1400px) {
    .sec3-body {
        grid-template-columns:
      minmax(calc(320 * var(--rpx)), calc(640 * var(--rpx)))
      minmax(calc(560 * var(--rpx)), 1fr);
        gap: calc(40 * var(--rpx));
    }
}

@media (max-width: 1200px) {
    .sec3-body {
        grid-template-columns:
      minmax(calc(300 * var(--rpx)), calc(560 * var(--rpx)))
      minmax(calc(520 * var(--rpx)), 1fr);
        gap: calc(32 * var(--rpx));
    }

    /* 实在放不下时允许换行，但最多两行并保持三列对齐 */
    .sec3-grid3 .p .line2 {
        white-space: normal;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        min-height: calc(76 * var(--rpx));
    }
}

/* 修正：<=960px 时必须覆盖 1400/1200 的两栏规则，保持竖向结构 */
@media (max-width: 960px) {
    .sec3-body {
        grid-template-columns: 1fr;
        align-items: start;
    }
}