```css
@font-face {
    font-family: 'ISOCP';
    src: url('../fonts/ISOCP-Regular.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background: white;
    color: black;
    font-family: Arial, Helvetica, sans-serif;
}

a {
    color: inherit;
    text-decoration: none;
}

/* HEADER */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 60px;
    font-family: 'ISOCP', Arial, sans-serif;
    z-index: 2000;
    background: rgba(255, 255, 255, .75);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transform: translateY(-100%);
    opacity: 0;
    transition: transform .4s ease, opacity .4s ease;
}

.site-header.show-header {
    transform: translateY(0);
    opacity: 1;
}

.logo {
    font-size: 3rem;
    font-weight: normal;
}

nav {
    display: flex;
    gap: 40px;
}

nav a {
    font-size: 1.8rem;
    letter-spacing: .02em;
    transition: color .25s ease;
}

nav a:hover {
    color: #666;
}

/* LANDING */

.landing {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    padding: 40px;
    transform: translateY(0);
    animation: fadeIntro 1s ease forwards;
}

.intro {
    max-width: 900px;
}

.intro h1 {
    font-family: 'ISOCP', Arial, sans-serif;
    font-size: 5rem;
    font-weight: normal;
    margin-bottom: 55px;
}

.definition {
    margin-bottom: 55px;
}

.definition .word {
    font-size: 1.4rem;
    margin-bottom: 20px;
}

.definition .meaning {
    color: #666;
    line-height: 1.8;
    white-space: nowrap;
}

.studio-description {
    color: #666;
    line-height: 1.8;
    max-width: 620px;
    margin: auto;
}

/* COLLECTION LINK */

.collection-link {
    position: absolute;
    bottom: 75px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    color: #666;
    transition: color .25s ease;
}

.collection-link:hover {
    color: #333;
}

.chevron {
    width: 12px;
    height: 12px;
    border-right: 1px solid currentColor;
    border-bottom: 1px solid currentColor;
    transform: rotate(45deg);
    position: relative;
    top: 0;
    animation: chevronMove 5s ease-in-out infinite;
}

@keyframes chevronMove {
    0%, 100% { top: 0; }
    50% { top: 8px; }
}

/* INTRO FADE */

@keyframes fadeIntro {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* GALLERY */

.gallery {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    padding: 60px 8px 180px;
    width: 100%;
}

.gallery-item {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    cursor: pointer;
}

.gallery-item img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .45s ease;
}

.gallery-item:hover img {
    transform: scale(1.03);
}

.overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: flex-end;
    padding: 28px;
    opacity: 0;
    transition: opacity .35s ease;
}

.gallery-item:hover .overlay {
    opacity: 1;
}

.overlay h2 {
    color: #555;
    font-size: 1.2rem;
    font-weight: 400;
}

/* LIGHTBOX */

#lightbox-overlay {
    position: fixed;
    top: 120px;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    overflow-y: auto;
    padding: 20px;
    background: rgba(255, 255, 255, .15);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity .35s ease, visibility .35s ease;
}

#lightbox-overlay.active {
    opacity: 1;
    visibility: visible;
}

#lightbox {
    width: min(1200px, 90vw);
    background: white;
    border: 8px solid white;
    padding: 30px;
    margin: 0 auto 40px;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, .12);
    transform: translateY(20px);
    opacity: 0;
    transition: transform .35s ease, opacity .35s ease;
}

#lightbox-overlay.active #lightbox {
    transform: translateY(0);
    opacity: 1;
}

#close-btn {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1.8rem;
    color: #777;
}

#close-btn:hover {
    color: #333;
}

#hero-media {
    width: 100%;
}

#lightbox-image,
#lightbox-video {
    display: block;
    width: 100%;
    height: 70vh;
    object-fit: cover;
    margin-bottom: 25px;
}

#lightbox-video {
    display: none;
}

/* PROJECT CONTENT */

.project-content {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    column-gap: 40px;
    margin-bottom: 60px;
}

.project-info {
    min-width: 0;
    max-width: none;
    margin-bottom: 0;
}

.project-info h2 {
    font-family: 'ISOCP', Arial, sans-serif;
    font-size: 3rem;
    font-weight: 400;
    margin-bottom: 30px;
}

#project-description {
    width: 100%;
    max-width: none;
    line-height: 1.7;
    margin-bottom: 40px;
}

.details {
    display: flex;
    gap: 60px;
    flex-wrap: wrap;
}

.details p {
    line-height: 1.8;
}

.details strong {
    display: inline-block;
    margin-bottom: 6px;
}

/* CONTACT */

.lightbox-links {
    grid-column: 2;
    grid-row: 1;
    align-self: end;
    margin: 0;
    flex-shrink: 0;
}

.lightbox-links a {
    display: inline-block;
    border: 1px solid black;
    padding: 12px 20px;
}

/* PROJECT MEDIA */

#project-media {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.project-image,
.project-video {
    display: block;
    width: 100%;
}

/* FULL-WIDTH DETAIL IMAGE FOR B CHAIR */

#project-media img.project-image:only-child {
    grid-column: 1 / -1;
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* RESPONSIVE */

@media (max-width: 900px) {
    .gallery {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .definition .meaning {
        white-space: normal;
    }

    .project-content {
        column-gap: 25px;
    }

    .details {
        gap: 30px;
    }
}

@media (max-width: 600px) {
    .site-header {
        padding: 25px;
    }

    .intro h1 {
        font-size: 3.5rem;
    }

    .gallery {
        grid-template-columns: minmax(0, 1fr);
    }

    #project-media {
        grid-template-columns: minmax(0, 1fr);
    }

    .project-content {
        grid-template-columns: minmax(0, 1fr);
        row-gap: 30px;
    }

    .lightbox-links {
        grid-column: 1;
        grid-row: auto;
    }
}
```