.bw-index {
    padding: clamp(2.5rem, 7vw, 4.5rem) 0;
    position: relative;
    background: var(--bw-ivory);
}

.bw-chapter-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.bw-chapter-list li + li { margin-top: 0.45rem; }

.bw-chapter-list__link {
    display: grid;
    grid-template-columns: 2.6rem 1fr auto;
    gap: 0.75rem 1rem;
    align-items: center;
    padding: 1.05rem 1rem;
    border: 1px solid color-mix(in srgb, var(--bw-olive) 14%, var(--bw-cream));
    border-radius: var(--bw-r-lg);
    background: color-mix(in srgb, var(--bw-cream) 55%, var(--bw-ivory));
    transition: border-color var(--bw-transition), transform var(--bw-transition), background var(--bw-transition);
}

.bw-chapter-list__link:hover,
.bw-chapter-list__link:focus-visible {
    background: var(--bw-ivory);
    border-color: var(--bw-olive);
    transform: translateX(-3px);
    outline: none;
}

.bw-chapter-list__num {
    font-family: var(--bw-font-display);
    font-size: 0.85rem;
    letter-spacing: 0.08em;
    color: var(--bw-gold-deep);
}

.bw-chapter-list__title {
    font-family: var(--bw-font-body);
    font-size: clamp(1.02rem, 2.8vw, 1.2rem);
    font-weight: 600;
    color: var(--bw-olive-dark);
}

.bw-chapter-list__count {
    font-size: 0.75rem;
    color: var(--bw-mid);
}

.bw-wall {
    position: relative;
    overflow: hidden;
    padding: clamp(2.25rem, 7vw, 4.5rem) 0 clamp(2.75rem, 8vw, 5rem);
    background: var(--bw-olive-dark);
    color: var(--bw-ivory);
}

.bw-wall__grain {
    pointer-events: none;
    position: absolute;
    inset: 0;
    opacity: 0.08;
    background-image: var(--bw-paper-grain);
    mix-blend-mode: multiply;
}

.bw-wall__inner { position: relative; z-index: 1; }

.bw-wall__head {
    text-align: center;
    margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
    max-width: 28rem;
    margin-inline: auto;
}

.bw-wall__brand {
    display: flex;
    justify-content: center;
    margin-bottom: 0.65rem;
}

.bw-wall__brand .bw-u-mark,
.bw-wall__brand img {
    width: 42px;
    height: 42px;
}

.bw-wall__kicker { color: var(--bw-gold); }

.bw-wall__title {
    margin: 0.4rem 0 0.5rem;
    font-family: var(--bw-font-display);
    font-size: clamp(1.7rem, 6vw, 2.4rem);
    font-weight: 600;
    color: var(--bw-ivory);
}

.bw-wall__lead {
    margin: 0;
    color: color-mix(in srgb, var(--bw-ivory) 74%, var(--bw-sage));
    font-size: 0.9rem;
    line-height: 1.75;
}

.bw-wall__board {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    grid-auto-flow: dense;
    gap: clamp(0.45rem, 1.6vw, 0.85rem);
    align-items: start;
    padding: clamp(0.35rem, 1.5vw, 0.75rem);
}

.bw-wall__shot {
    position: relative;
    margin: 0;
    width: 100%;
    min-width: 0;
    grid-column: span 2;
    animation: bw-wall-float-in 0.7s var(--bw-transition) both;
    animation-delay: calc(var(--wall-i, 0) * 0.04s);
    z-index: 1;
}

.bw-wall__shot--sq { grid-column: span 2; }
.bw-wall__shot--tall { grid-column: span 2; }
.bw-wall__shot--wide { grid-column: span 4; }
.bw-wall__shot--hero { grid-column: span 4; }

@keyframes bw-wall-float-in {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: none; }
}

.bw-wall__frame {
    position: relative;
    display: block;
    width: 100%;
    margin: 0;
    padding: 0.4rem 0.4rem 0.3rem;
    border: 0;
    border-radius: 0.85rem;
    background: var(--bw-ivory);
    box-shadow: 0 10px 24px color-mix(in srgb, var(--bw-forest) 28%, transparent);
    cursor: zoom-in;
    transform:
        translate(
            calc(var(--jx, 0%) * var(--wall-scatter, 1)),
            calc(var(--jy, 0%) * var(--wall-scatter, 1))
        )
        rotate(var(--jr, 0deg));
    transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.bw-wall__frame:hover,
.bw-wall__frame:focus-visible {
    z-index: 3;
    transform:
        translate(
            calc(var(--jx, 0%) * var(--wall-scatter, 1)),
            calc(var(--jy, 0%) * var(--wall-scatter, 1) - 4px)
        )
        scale(1.02)
        rotate(var(--jr, 0deg));
    outline: none;
}

.bw-wall__shot:hover,
.bw-wall__shot:focus-within { z-index: 4; }

.bw-wall__frame img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 0.55rem;
    background: var(--bw-cream);
}

.bw-wall__shot--tall .bw-wall__frame img { aspect-ratio: 3 / 4; }
.bw-wall__shot--wide .bw-wall__frame img { aspect-ratio: 4 / 3; }
.bw-wall__shot--hero .bw-wall__frame img { aspect-ratio: 5 / 6; }

.bw-wall__tape {
    position: absolute;
    top: -0.3rem;
    left: 50%;
    width: 38%;
    height: 0.55rem;
    transform: translateX(-50%) rotate(-2deg);
    background: color-mix(in srgb, var(--bw-gold) 55%, var(--bw-beige));
    opacity: 0.7;
    border-radius: 1px;
}

.bw-wall__caption {
    display: flex;
    align-items: flex-start;
    gap: 0.4rem;
    margin-top: 0.4rem;
    padding: 0 0.15rem;
    font-size: 0.72rem;
    line-height: 1.45;
    color: color-mix(in srgb, var(--bw-ivory) 78%, var(--bw-sage));
}

.bw-wall__pin {
    flex-shrink: 0;
    width: 0.5rem;
    height: 0.5rem;
    margin-top: 0.2rem;
    border-radius: 50%;
    background: var(--bw-gold);
}

.bw-wall__shot--r0 { --jr-extra: -0.4deg; }
.bw-wall__shot--r1 { --jr-extra: 0.5deg; }
.bw-wall__shot--r2 { --jr-extra: -0.2deg; }
.bw-wall__shot--r3 { --jr-extra: 0.7deg; }
.bw-wall__shot--r4 { --jr-extra: -0.6deg; }
.bw-wall__shot--r5 { --jr-extra: 0.3deg; }
.bw-wall__shot--r6 { --jr-extra: -0.35deg; }

.bw-wall__shot--r0 .bw-wall__frame,
.bw-wall__shot--r1 .bw-wall__frame,
.bw-wall__shot--r2 .bw-wall__frame,
.bw-wall__shot--r3 .bw-wall__frame,
.bw-wall__shot--r4 .bw-wall__frame,
.bw-wall__shot--r5 .bw-wall__frame,
.bw-wall__shot--r6 .bw-wall__frame {
    transform:
        translate(
            calc(var(--jx, 0%) * var(--wall-scatter, 1)),
            calc(var(--jy, 0%) * var(--wall-scatter, 1))
        )
        rotate(calc(var(--jr, 0deg) + var(--jr-extra, 0deg)));
}

.bw-wall-lightbox {
    position: fixed;
    inset: 0;
    z-index: 1200;
    display: grid;
    place-items: center;
    padding: 1rem;
    padding-bottom: calc(1rem + var(--bw-safe-bottom));
}

.bw-wall-lightbox[hidden] { display: none !important; }

.bw-wall-lightbox__veil {
    position: absolute;
    inset: 0;
    border: 0;
    background: color-mix(in srgb, var(--bw-forest) 78%, transparent);
    backdrop-filter: blur(8px);
    cursor: pointer;
}

.bw-wall-lightbox__panel {
    position: relative;
    z-index: 1;
    width: min(100%, 420px);
    background: var(--bw-ivory);
    border-radius: var(--bw-r-lg);
    padding: 0.7rem 0.7rem 1rem;
    box-shadow: var(--flr-shadow);
}

.bw-wall-lightbox__panel img {
    display: block;
    width: 100%;
    max-height: min(68dvh, 520px);
    object-fit: contain;
    border-radius: var(--bw-r-sm);
    background: var(--bw-cream);
}

.bw-wall-lightbox__caption {
    margin: 0.75rem 0.25rem 0;
    color: var(--bw-ink);
    font-size: 0.9rem;
    text-align: center;
    line-height: 1.5;
}

.bw-wall-lightbox__close {
    position: absolute;
    top: 0.35rem;
    left: 0.35rem;
    z-index: 2;
    width: 2rem;
    height: 2rem;
    border: 0;
    border-radius: 50%;
    background: color-mix(in srgb, var(--bw-forest) 72%, transparent);
    color: var(--bw-ivory);
    font-size: 1.2rem;
    line-height: 1;
    cursor: pointer;
}

@media (min-width: 640px) {
    .bw-wall__board {
        grid-template-columns: repeat(6, minmax(0, 1fr));
        gap: clamp(0.55rem, 1.4vw, 0.95rem);
    }

    .bw-wall__shot--sq { grid-column: span 2; }
    .bw-wall__shot--tall { grid-column: span 2; }
    .bw-wall__shot--wide { grid-column: span 3; }
    .bw-wall__shot--hero { grid-column: span 3; }
}

@media (min-width: 960px) {
    .bw-wall__board {
        grid-template-columns: repeat(12, minmax(0, 1fr));
        gap: 0.85rem 0.75rem;
    }

    .bw-wall__shot--sq { grid-column: span 3; }
    .bw-wall__shot--tall { grid-column: span 3; }
    .bw-wall__shot--wide { grid-column: span 4; }
    .bw-wall__shot--hero { grid-column: span 5; }

    .bw-wall-lightbox__panel { width: min(100%, 520px); }
}

@media (max-width: 768px) {
    .bw-chapter-list__link {
        grid-template-columns: 2.2rem 1fr auto;
        padding: 0.95rem 0.85rem;
    }
}

@media (max-width: 420px) {
    .bw-wall__board { grid-template-columns: repeat(2, minmax(0, 1fr)); }

    .bw-wall__shot,
    .bw-wall__shot--sq,
    .bw-wall__shot--tall,
    .bw-wall__shot--wide,
    .bw-wall__shot--hero {
        grid-column: span 1;
    }
}