.scroll-stack { height: 300vh; }
.scroll-stack-item { position: sticky; top: 0; height: 100vh; }
.scroll-stack-item:nth-child(1) { z-index: 1; }
.scroll-stack-item:nth-child(2) { z-index: 2; }
.scroll-stack-item:nth-child(3) { z-index: 3; }
.scroll-stack-inner { position: relative; width: 100%; height: 100%; overflow: hidden; background: #090909; }
.scroll-stack-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.75; filter: grayscale(1); }
.scroll-stack-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.1); }
.scroll-stack-gradient { position: absolute; right: 0; top: 0; width: 50%; height: 100%; background: linear-gradient(to right, rgba(0,0,0,0), rgba(0,0,0,0.7)); pointer-events: none; }
.scroll-stack-content { position: absolute; right: 0; top: 0; width: 33.333%; height: 100%; display: flex; flex-direction: column; justify-content: center; padding: 64px 48px; color: white; }
.scroll-stack-title { font-size: 40px; font-weight: 500; line-height: 1.1; margin: 0 0 20px; }
.scroll-stack-desc { font-size: 16px; font-weight: 300; line-height: 1.7; color: rgba(255,255,255,0.7); margin: 0; max-width: 90%; }