/* "Giới thiệu" page — Figma: nội san / UI / MacBook Pro 14" - 10 (1512px frame) */

.page-about {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.about {
    zoom: var(--ui-scale);
    padding: 37px 20px 200px;
    font-family: "Inter", sans-serif;
    color: #fff;
}

.about_lead,
.about_class_lead {
    font-family: "Inter", sans-serif;
    font-size: 48px;
    letter-spacing: -0.04em;
    line-height: 1.21; /* Figma "auto" for Inter: 58px at 48px */
}

.about_lead {
    max-width: 1462px;
}

.about_columns,
.about_class {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    column-gap: 20px;
    align-items: start;
}

.about_columns {
    margin-top: 158px;
}

.about_body {
    max-width: 477px;
    font-family: "Inter", sans-serif;
    font-size: 20px;
    line-height: normal;
}

.about_class {
    margin-top: 578px;
}

.about_class_lead {
    grid-column: 1 / span 2;
    max-width: 869px;
}

.about_class_photo {
    grid-column: 3;
    justify-self: end;
    display: block;
    width: 479px;
    max-width: 100%;
    margin-right: 13px;
    aspect-ratio: 479 / 270;
    object-fit: cover;
    margin-top: 329px;
}

@media (max-width: 900px) {
    .about {
        padding-top: 24px;
        padding-bottom: 160px; /* clears the footer */
    }

    .about_lead,
    .about_class_lead {
        font-size: 32px;
    }

    .about_columns,
    .about_class {
        grid-template-columns: minmax(0, 1fr);
        row-gap: 20px;
    }

    .about_columns {
        margin-top: 64px;
    }

    .about_class {
        margin-top: 120px;
    }

    .about_class_lead,
    .about_class_photo {
        grid-column: 1;
    }

    .about_class_photo {
        justify-self: start;
        margin: 20px 0 0;
    }
}