.flex {
    display: flex;
}

.inline-flex {
    display: inline-flex;
}

.flex-d-column {
    flex-direction: column;
}

.flex-d-column-portrait {
    @media (max-width: 767px) {
        flex-direction: column;
    }
}

.flex-d-row {
    flex-direction: row;
}

.flex-d-r-reverse {
    flex-direction: row-reverse;
}

.flex-d-c-reverse {
    flex-direction: column-reverse;
}

.flex-align-center {
    align-items: center;
}

.flex-justify-center {
    justify-content: center;
}

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

.flex-1 {
    flex: 1;
}

.flex-wrap {
    flex-wrap: wrap;
}

.flex-gap-20 {
    gap: 20px;
}

.flex-gap-12 {
    gap: 12px;
}

.position-relative {
    position: relative;
}

.aspect-ratio-3-1 {
    aspect-ratio: 3.21 / 1;
}

.aspect-ratio-3-4 {
    aspect-ratio: 3 / 4;
}

.aspect-ratio-11-4 {
    aspect-ratio: 11 / 4;
}

.aspect-ratio-16-9 {
    aspect-ratio: 16 / 9;
}

.aspect-ratio-59-38 {
    aspect-ratio: 59 / 38;
}

.f-w-bold {
    font-weight: bold;
}

.f-w-7 {
    font-weight: 700;
}

.m-0 {
    margin: 0;
}

.m-20 {
    margin: 20px;
}

.m-t-20 {
    margin-top: 20px;
}

.m-b-20 {
    margin-bottom: 20px;
}

.m-b-0-portrait {
    margin-bottom: 0;
}

.m-l-auto {
    margin-left: auto;
}

/*用于水平居中*/
.m-inline-auto {
    margin-inline: auto;
}

.p-0 {
    padding: 0;
}

.f-s-14 {
    font-size: 14px;
}

.f-s-16 {
    font-size: 16px;
}

.f-s-20 {
    font-size: 20px;
}

.f-s-24 {
    font-size: 24px;
}

.f-s-25 {
    font-size: 25px;
}

.bg-6 {
    background: #666666;
}

.bg-f {
    background: #ffffff;
}

.line-height-24 {
    line-height: 24px;
}

.line-height-25 {
    line-height: 25px!important;
}

.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.color-f {
    color: #fff!important;
}

.color-black {
    color: #000;
}

.color-3d {
    color: #3D3D3D;
}

.color-2 {
    color: #222222;
}

.color-primary {
    color: #006AFE;
}

.media-radius {
    border-radius: 24px;
    overflow: hidden;
}

.media-image {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.title-40 {
    font-size: 40px;
    line-height: 1.25;
}

.title-sub-20 {
    font-size: 20px;
    line-height: 25px;
}

.box-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
}

.box-center-vertical {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
}

.box-center-horizontal {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.media-video {
    width: 100%;
    height: auto;
}

/*描述 + 图文区*/

.primary-content {
    position: relative;
    overflow: hidden;
}

.primary-content-header {
    text-align: center;
}

.primary-content-header .header__title {
    margin: 0;
}

.primary-content-body {
    margin-block: 70px;

    @media (max-width: 767px) {
        margin-block: 10px;
    }
}

.border-radius-24 {
    border-radius: 24px;
}

.border-radius-16 {
    border-radius: 16px;
}

a.clear-default {
    text-decoration: none;
}

.border-radius-16-portrait {
    @media (max-width: 767px) {
        border-radius: 16px!important;
    }
}

.f-s-24-portrait {
    @media (max-width: 767px) {
        font-size: 24px;
    }
}

/* certifications start */
.certifications {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: #EFF2F1;

    @media (max-width: 767px) {
        min-height: 180px;
    }

    @media (min-width: 768px) {
        min-height: 280px;
    }
}

.certifications.footer-keep {
    margin-bottom: -20px;
    padding-bottom: 20px;
}

.certifications-title {
    width: calc(100% - 30px);
    text-align: center;
    font-family: 'Inter', sans-serif;
    font-weight: 800;
    line-height: 1.2;
    padding: 20px 0;
}

.certifications__media {
    width: 100%;
    max-height: 722px;
}
/* certifications end */