/* content frame tiles — animated icon stage (replaces photo area) */
.content-frame-tiles__icon-stage {
    min-height: 14rem;
}

.content-frame-tiles__icon-tile {
    width: 5.5rem;
    height: 5.5rem;
    animation: content-frame-tiles-float 6s ease-in-out infinite;
}

.content-frame-tiles__icon-ring {
    width: 7rem;
    height: 7rem;
    animation: content-frame-tiles-ring 4.5s ease-in-out infinite;
}

.content-frame-tiles__icon-pulse {
    animation: content-frame-tiles-pulse 3.5s ease-in-out infinite;
}

.content-frame-tiles__icon-glyph {
    animation: content-frame-tiles-tilt 5s ease-in-out infinite;
    transform-origin: center;
}

.content-frame-tiles__icon-stage--0 .content-frame-tiles__icon-tile {
    animation-delay: 0s;
}

.content-frame-tiles__icon-stage--0 .content-frame-tiles__icon-ring {
    animation-delay: 0.3s;
}

.content-frame-tiles__icon-stage--0 .content-frame-tiles__icon-pulse {
    animation-delay: 0s;
}

.content-frame-tiles__icon-stage--0 .content-frame-tiles__icon-glyph {
    animation-delay: 0.2s;
}

.content-frame-tiles__icon-stage--1 .content-frame-tiles__icon-tile {
    animation-delay: 0.9s;
}

.content-frame-tiles__icon-stage--1 .content-frame-tiles__icon-ring {
    animation-delay: 1.2s;
}

.content-frame-tiles__icon-stage--1 .content-frame-tiles__icon-pulse {
    animation-delay: 0.8s;
}

.content-frame-tiles__icon-stage--1 .content-frame-tiles__icon-glyph {
    animation-delay: 1s;
}

.content-frame-tiles__icon-stage--2 .content-frame-tiles__icon-tile {
    animation-delay: 1.8s;
}

.content-frame-tiles__icon-stage--2 .content-frame-tiles__icon-ring {
    animation-delay: 2.1s;
}

.content-frame-tiles__icon-stage--2 .content-frame-tiles__icon-pulse {
    animation-delay: 1.6s;
}

.content-frame-tiles__icon-stage--2 .content-frame-tiles__icon-glyph {
    animation-delay: 1.8s;
}

@keyframes content-frame-tiles-float {
    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-0.4rem);
    }
}

@keyframes content-frame-tiles-ring {
    0%,
    100% {
        transform: scale(1) rotate(0deg);
        opacity: 0.7;
    }

    50% {
        transform: scale(1.08) rotate(12deg);
        opacity: 0.35;
    }
}

@keyframes content-frame-tiles-pulse {
    0%,
    100% {
        opacity: 0.45;
    }

    50% {
        opacity: 0.15;
    }
}

@keyframes content-frame-tiles-tilt {
    0%,
    100% {
        transform: rotate(0deg) scale(1);
    }

    50% {
        transform: rotate(8deg) scale(1.08);
    }
}

@media (prefers-reduced-motion: reduce) {
    .content-frame-tiles__icon-tile,
    .content-frame-tiles__icon-ring,
    .content-frame-tiles__icon-pulse,
    .content-frame-tiles__icon-glyph {
        animation: none;
    }
}

/* Bootstrap: explicit grid + gap (row gutters often collapse) */
.tips-grid__bs-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 2rem;
}

.tips-grid__min-shrink {
    min-width: 0;
}

@media (min-width: 768px) {
    .tips-grid__bs-row {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.tips-grid__subtitle {
    max-width: 42rem;
}

.tips-grid__thumb {
    width: 3rem;
    height: 3rem;
}

/* FAQ v18 — accordion mechanics */
.faq-accordion-panel {
    max-height: 0;
}

.faq-accordion-icon.solver-hints-symbol-reveal {
    transform: rotate(180deg);
}

/* v23 — infinite marquee scroll (no BS/JS analog for @keyframes transform loop) */
@keyframes mailing-marquee-scroll {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

.mailing-marquee__track {
    animation: mailing-marquee-scroll 25s linear infinite;
}

@media (prefers-reduced-motion: reduce) {
    .mailing-marquee__track {
        animation: none;
    }
}

/* edge fade mask — alpha gradient, not a fill color choice */
.mailing-marquee__viewport {
    mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
    -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}