/* ============================================================
   HERO — Particles canvas, hero section, preview box, FAQ, scroll
   ============================================================ */

#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.6;
}

.hero-title {
    letter-spacing: -0.04em;
    line-height: 0.85;
}

.preview-box {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.01) 100%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 50px 100px -20px rgba(0, 0, 0, 0.5);
}

@keyframes scrollDown {
    0%   { transform: translateY(0); opacity: 0; }
    40%  { opacity: 1; }
    80%  { transform: translateY(12px); opacity: 0; }
    100% { transform: translateY(12px); opacity: 0; }
}

.scroll-wheel {
    animation: scrollDown 2s ease-in-out infinite;
}

/* --- FAQ --- */

.faq-item.active {
    border-color: var(--primary) !important;
}