/* Topic illustrations (assets/images/topic-*.webp): soft matte grayscale renders on one 384px square, used by the
 * phone FAQ topics, How It Works steps, Why Us and Reviews. They are pure white/gray/black, so white mode keeps
 * them as they are (inverting a lit render flips its shading) and only swaps the shadow for a lighter one. */
@media (max-width: 767px) {
    html[data-theme="light"] :is(.hmf__coin, .hmo__coin, .hm-rev__coin, .hmh__art-img) { filter: drop-shadow(0 8px 14px rgba(20, 20, 20, 0.22)); }
}