.review-toolbar {
    position: sticky;
    z-index: 100;
    top: 0;
    min-height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 10px 20px;
    border-bottom: 1px solid var(--color-border);
    background: rgba(8, 8, 8, 0.97);
    backdrop-filter: blur(12px);
}

.review-title,
.review-controls,
.variant-tabs {
    display: flex;
    align-items: center;
}

.review-title {
    gap: 11px;
    color: #fff;
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.12em;
    white-space: nowrap;
}

.review-title small {
    padding-left: 10px;
    border-left: 1px solid var(--color-border);
    color: var(--color-accent);
    font-size: 0.56rem;
}

.review-mark {
    width: 9px;
    height: 9px;
    border: 1px solid var(--color-accent);
    transform: rotate(22deg);
}

.review-controls {
    gap: 18px;
}

.variant-tabs {
    gap: 10px;
}

.variant-tabs button {
    padding: 9px 11px;
    border: 1px solid var(--color-border);
    color: var(--color-dim);
    background: transparent;
    font-family: var(--font-mono);
    font-size: 0.58rem;
    letter-spacing: 0.08em;
    cursor: pointer;
}

.variant-tabs button:hover,
.variant-tabs button:focus-visible,
.variant-tabs button[aria-selected="true"] {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.prototype-variant {
    min-height: calc(100vh - 70px);
    padding: clamp(68px, 8vw, 120px) 0;
    background: rgba(18, 18, 18, 0.92);
}

.prototype-variant[hidden] {
    display: none;
}

.study-container {
    max-width: 1540px;
}

.section-intro {
    max-width: 920px;
    margin: 0 auto clamp(44px, 6vw, 72px);
}

.section-intro h2 {
    margin-bottom: 18px;
    font-size: clamp(3.2rem, 6vw, 5.8rem);
}

.section-intro p {
    margin: 0 auto;
    color: #bbb;
    font-size: 1.15rem;
}

.section-intro-left {
    margin-left: 0;
    text-align: left;
}

.section-intro-left p {
    margin-left: 0;
}

.pillar-card-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.pillar-card {
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--color-border);
    background: linear-gradient(145deg, #1c1c1c, #101010);
}

.pillar-card > img {
    width: 100%;
    aspect-ratio: 4 / 4.25;
    display: block;
    object-fit: cover;
    object-position: center 38%;
    filter: saturate(0.92) contrast(1.02);
}

.pillar-card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 28px 28px 32px;
}

.audience {
    display: block;
    margin-bottom: 12px;
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.12em;
    line-height: 1.5;
}

.pillar-card h3 {
    font-size: 2.6rem;
}

.pillar-question {
    color: #fff;
    font-family: var(--font-body);
    font-size: 0.88rem;
    font-weight: 600;
    letter-spacing: 0.07em;
    line-height: 1.55;
}

.pillar-card-body > p:last-child {
    margin-top: auto;
    margin-bottom: 0;
    font-size: 1rem;
}

.spotlight-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.65fr) minmax(340px, 0.75fr);
    min-height: 760px;
    border: 1px solid var(--color-border);
    background: #0d0d0d;
}

.spotlight-stage {
    position: relative;
    min-height: 760px;
    overflow: hidden;
}

.spotlight-panel {
    position: absolute;
    inset: 0;
}

.spotlight-panel[hidden] {
    display: none;
}

.spotlight-panel img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    object-position: center 35%;
}

.spotlight-panel::after {
    position: absolute;
    inset: 0;
    background: linear-gradient(0deg, rgba(7, 7, 7, 0.96) 0%, rgba(7, 7, 7, 0.58) 42%, transparent 72%);
    content: "";
}

.spotlight-copy {
    position: absolute;
    z-index: 2;
    right: clamp(26px, 5vw, 70px);
    bottom: clamp(28px, 5vw, 62px);
    left: clamp(26px, 5vw, 70px);
    max-width: 720px;
}

.spotlight-copy h3 {
    margin-bottom: 12px;
    font-size: clamp(3.5rem, 7vw, 6.6rem);
}

.spotlight-copy .pillar-question {
    max-width: 620px;
    margin-bottom: 12px;
    font-size: 1rem;
}

.spotlight-copy > p:last-of-type {
    max-width: 620px;
    margin-bottom: 0;
    color: #ccc;
}

.pillar-cta {
    width: min(100%, 360px);
    box-sizing: border-box;
    margin-top: 24px;
    text-align: center;
}

.spotlight-index {
    display: grid;
    grid-template-rows: repeat(6, 1fr);
    border-left: 1px solid var(--color-border);
}

.spotlight-index button {
    min-height: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 8px;
    padding: 18px 24px;
    border: 0;
    border-bottom: 1px solid var(--color-border);
    color: #aaa;
    background: transparent;
    text-align: left;
    cursor: pointer;
}

.spotlight-index button:last-child {
    border-bottom: 0;
}

.spotlight-index button span {
    color: #fff;
    font-family: var(--font-head);
    font-size: 1.5rem;
    letter-spacing: 0.08em;
}

.spotlight-index button small {
    color: #777;
    font-family: var(--font-body);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    line-height: 1.35;
}

.spotlight-index button:hover,
.spotlight-index button:focus-visible,
.spotlight-index button.is-active {
    background: rgba(212, 175, 55, 0.08);
    box-shadow: inset 3px 0 0 var(--color-accent);
}

.spotlight-index button.is-active span,
.spotlight-index button.is-active small {
    color: var(--color-accent);
}

.matrix-intro {
    max-width: 1000px;
}

.pillar-matrix {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.matrix-card {
    position: relative;
    aspect-ratio: 4 / 5;
    min-height: 0;
    overflow: hidden;
    background: #111;
}

.matrix-card img,
.matrix-shade {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.matrix-card img {
    object-fit: cover;
    object-position: center;
    transition: transform 500ms cubic-bezier(0.16, 1, 0.3, 1), filter 500ms ease;
}

.matrix-shade {
    background: linear-gradient(0deg, rgba(5, 5, 5, 0.98) 0%, rgba(5, 5, 5, 0.66) 40%, rgba(5, 5, 5, 0.04) 76%);
}

.matrix-copy {
    position: absolute;
    z-index: 2;
    right: 26px;
    bottom: 28px;
    left: 26px;
}

.matrix-copy h3 {
    margin-bottom: 9px;
    font-size: clamp(2.5rem, 4vw, 3.8rem);
}

.matrix-copy .pillar-question {
    margin-bottom: 10px;
    font-size: 0.78rem;
}

.matrix-copy > p:last-child {
    margin-bottom: 0;
    color: #bbb;
    font-size: 0.92rem;
    line-height: 1.5;
}

.matrix-card:hover img,
.matrix-card:focus-within img {
    filter: saturate(1.05) contrast(1.04);
    transform: scale(1.025);
}

button:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
}

@media (max-width: 1100px) {
    .review-toolbar {
        align-items: flex-start;
        flex-direction: column;
    }

    .review-controls {
        width: 100%;
        justify-content: space-between;
    }

    .variant-tabs {
        max-width: calc(100vw - 115px);
        overflow-x: auto;
        padding-bottom: 4px;
    }

    .variant-tabs button {
        white-space: nowrap;
    }

    .review-title small {
        display: none;
    }

    .pillar-card-grid,
    .pillar-matrix {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .spotlight-layout {
        grid-template-columns: 1fr;
    }

    .spotlight-index {
        grid-template-columns: repeat(3, 1fr);
        grid-template-rows: repeat(2, auto);
        border-top: 1px solid var(--color-border);
        border-left: 0;
    }

    .spotlight-index button {
        min-height: 110px;
        border-right: 1px solid var(--color-border);
    }
}

@media (max-width: 700px) {
    .prototype-variant {
        padding: 54px 0 88px;
    }

    .section-intro {
        margin-bottom: 40px;
    }

    .section-intro h2 {
        font-size: clamp(3rem, 15vw, 4.5rem);
    }

    .pillar-card-grid,
    .pillar-matrix {
        grid-template-columns: 1fr;
    }

    .pillar-card > img {
        aspect-ratio: 4 / 4;
    }

    .pillar-card-body {
        padding: 24px;
    }

    .spotlight-stage {
        min-height: 650px;
    }

    .spotlight-index {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: repeat(3, auto);
    }

    .spotlight-index button {
        min-height: 96px;
        padding: 14px;
    }

    .spotlight-index button small {
        display: none;
    }

    .matrix-card {
        aspect-ratio: 4 / 4.6;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition: none !important;
    }
}