```javascript
// Initialize particles
function initParticles() {
  const particleHost = document.getElementById('particles');
  const VW = Math.max(document.documentElement.clientWidth || 0, window.innerWidth || 0);
  const VH = Math.max(document.documentElement.clientHeight || 0, window.innerHeight || 0);
  const BASE = 12;
  const density = Math.round((VW * VH) / (900 * 900));
  const PARTICLE_COUNT = Math.max(8, Math.min(22, BASE + density * 4));

  const make = (t, c) => {
    const e = document.createElement(t);
    if (c) e.className = c;
    return e;
  };
  
  const rand = (a, b) => Math.random() * (b - a) + a;
  
  for (let i = 0; i < PARTICLE_COUNT; i++) {
    const p = make('div', 'particle');
    const size = rand(2, 6);
    p.style.width = p.style.height = size + 'px';
    p.style.left = rand(0, 100) + '%';
    p.style.top = rand(0, 100) + '%';
    p.style.animationDelay = rand(0, 5) + 's';
    const dur = (4 + Math.random() * 3).toFixed(2) + 's';
    p.style.animationDuration = dur;
    particleHost.appendChild(p);
  }
}

// Initialize intersection observer for reveals
function initReveals() {
  const io = new IntersectionObserver((entries) => {
    entries.forEach(e => {
      if (e.isIntersecting) {
        e.target.classList.add('in-view');
        io.unobserve(e.target);
      }
    });
  }, { root: null, rootMargin: '-100px', threshold: 0 });
  
  document.querySelectorAll('.reveal-up, .reveal-left, .reveal-scale, .feature').forEach(el => io.observe(el));
  document.querySelectorAll('.feature').forEach((el, i) => {
    el.style.transitionDelay = (0.6 + i * 0.1) + 's';
  });
  document.querySelectorAll('.reveal-up').forEach((el, i) => {
    if (!el.style.transitionDelay) {
      el.style.transitionDelay = (0.2 + i * 0.2) + 's';
  });
}

// Initialize parallax effect
function init