/**
 * Module CSS: 03-scroll-reveal.css
 * Trích nguyên văn dòng 225-258 của pctech-homepage.css gốc.
 * Không đổi nội dung — chỉ tách file theo đúng marker sẵn có trong code gốc.
 */
    /* ── Scroll reveal ── */
    .reveal {
      opacity: 0;
      transform: translateY(40px);
      transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
                  transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }
    .reveal-left {
      opacity: 0;
      transform: translateX(-50px);
      transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .reveal-right {
      opacity: 0;
      transform: translateX(50px);
      transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .reveal-left.visible, .reveal-right.visible {
      opacity: 1;
      transform: translateX(0);
    }
    .reveal-scale {
      opacity: 0;
      transform: scale(0.9);
      transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    }
    .reveal-scale.visible { opacity: 1; transform: scale(1); }

    .stagger > * { transition-delay: calc(var(--i, 0) * 0.1s); }