main {
    margin: 0;
    display: grid;
    grid-template-columns: [viewport-start] var(--site-margin) repeat(12, 1fr) var(--site-margin) [viewport-end];
    column-gap: var(--grid-gap, 1.5rem);
    font-family: var(--font-main);
}

.hero-image{
    grid-column: viewport-start / viewport-end;
    width: 100%;
}

.hero-image img{
    width: 100%;
    height: calc(100vh - var(--nav-height)); 
    display: block;
    margin-top: var(--nav-height);
    object-fit: cover; 
    object-position: center;
    margin-bottom: var(--section-margin);
}

.title-header {
    grid-column: 3 / span 10;
}

.title-heading {
    font-size: var(--font-size-h1);
    font-weight: 500;
}

.intro {
    margin-top: 1rem;
    margin-bottom: var(--section-margin);
    
    grid-column: viewport-start / viewport-end;
    
    display: grid;
    grid-template-columns: subgrid;
    column-gap: inherit; 
    row-gap: var(--section-margin);
}

.text-section{
    grid-column: viewport-start / viewport-end;
    display: grid;
    grid-template-columns: subgrid;
    column-gap: inherit;
}

.textPanel-section{
    grid-column: viewport-start / viewport-end;
    display: grid;
    grid-template-columns: subgrid;
    column-gap: inherit;
    margin-bottom: 2rem;
}

.section-label {
    font-size: var(--font-size-medium);
    font-weight: 300;
    grid-column: 3 / span 2;
    color: var(--grey);
}

.section-disc {
    font-size: var(--font-size-medium);
    font-weight: 300; 
    grid-column: 5 / span 6;
}

.section-disc-2 {
    font-size: var(--font-size-medium);
    font-weight: 300; 
    grid-column: 5 / span 6;
    margin-top: 2rem;
}

.main-image{
    grid-column: viewport-start / viewport-end;
    width: 100%;
}

.main-image img{
    width: 100%;
    height: auto; 
    display: block;
    object-fit: cover; 
    object-position: center;
    margin-top: 2rem;
}

.main-image-2 {
    grid-column: 2 / 14;
    width: 100%;
}

.main-image-3{
    grid-column: 2 / 14;
    width: 100%;
}

.main-image-3 img{
    width: 100%;
    height: auto; 
    display: block;
    object-fit: cover; 
    object-position: center;
    margin-bottom: var(--section-margin);
    border-radius: 2rem;
}

.main-image-2 img{
    width: 100%;
    height: auto; 
    display: block;
    object-fit: cover; 
    object-position: center;
    margin-bottom: 1rem;
    border-radius: 2rem;
}

.Hero-images-section {
    grid-column: viewport-start / viewport-end;
    width: 100%;
    display: flex;
    flex-direction: row;
    margin-bottom: var(--section-margin);
}

.Hero-images-section img{
    width: 50%;
    height: auto; 
    display: block;
    object-fit: cover; 
    object-position: center;
}

.letter-frame-section {
    grid-column: viewport-start / viewport-end;
    background-color: #000000;
    
    display: grid;
    grid-template-columns: subgrid;
    column-gap: inherit;
    
    padding: 6rem 0;
    row-gap: 4rem; 

    margin-bottom: var(--section-margin);
}

.collage-section {
    grid-column: 2 / 14;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem; 
    width: 100%;
    margin-top: var(--site-margin);
    margin-bottom: var(--section-margin);
}

.collage-section img {
    border-radius: 2rem;

    flex: 1 1 320px; 
    
    height: auto;
    max-width: calc(50% - 1rem);
    object-fit: cover;
}

video.book-video {
    grid-column: viewport-start/viewport-end;
    width: 100%; 
    height: auto; 
    object-fit: contain;
    margin-bottom: var(--section-margin);
}

@media (max-width: 900px) {
    .hero-image img {
        height: auto;
        aspect-ratio: 402 / 270;
        margin-bottom: 1.5rem;
    }

    .title-header {
        grid-column: viewport-start / viewport-end;
        padding: 0 var(--site-margin);
    }

    .title-heading {
        font-size: clamp(2.25rem, 10vw, 2.5rem);
    }

    /* Text sections: single stacked column */
    .text-section {
        display: block;
        grid-column: viewport-start / viewport-end;
        padding: 0 var(--site-margin);
    }

    .section-label {
        font-size: var(--font-size-medium);
        margin-bottom: 1rem;
    }

    .section-disc {
        font-size: var(--font-size-medium);
        margin-bottom: 1rem;
    }

    .intro,
    .title-container {
        row-gap: 1.75rem;
        margin-bottom: 2.5rem;
    }

    .section-disc-2 {
        margin-top: 1.25rem;
    }

    .Hero-images-section {
    grid-column: viewport-start / viewport-end;
    width: 100%;
    display: flex;
    flex-direction: column;
    margin-bottom: var(--section-margin);
    }

    .Hero-images-section img{
    width: 100%;
    height: auto; 
    display: block;
    object-fit: cover; 
    object-position: center;
    }

    .main-image-2 {
    grid-column: viewport-start / viewport-end;
    width: 100%;
    }

    .main-image-2 img{
    width: 100%;
    height: auto; 
    display: block;
    object-fit: cover; 
    object-position: center;
    margin-bottom: 0rem;
    border-radius: 0rem;
    }

    .main-image-3 {
    grid-column: viewport-start / viewport-end;
    width: 100%;
    }

    .main-image-3 img{
    width: 100%;
    height: auto; 
    display: block;
    object-fit: cover; 
    object-position: center;
    margin-bottom: var(--section-margin);
    border-radius: 0rem;
    }

}