/* intro v28 — Arc diagonal-split: clip split, floating rings, ransom-note words, grayscale hover, click burst */

/* Diagonal split zone */
.intro-arc2__split {
    clip-path: polygon(0 0, 100% 0, 100% 62%, 0 100%);
    opacity: 0.6;
}

/* Floating rings / donuts (fixed size — no BS w-N/h-N utility) */
.intro-arc2__ring { width: 10rem; height: 10rem; animation: intro-arc2-float 7s ease-in-out infinite; }
.intro-arc2__ring--2 { width: 6rem; height: 6rem; animation-duration: 9s; animation-delay: 1s; }
@keyframes intro-arc2-float {
    50% { transform: translateY(-1.2rem) rotate(20deg); }
}

/* Serif accent (paired with sans body) */
.intro-arc2__serif { font-family: ui-serif, Georgia, "Times New Roman", serif; }

/* Hero image grayscale → colour reveal on hover */
.intro-arc2__figure { aspect-ratio: 4 / 3; }
.intro-arc2__img {
    object-fit: cover;
    filter: grayscale(1);
    transition: filter 420ms ease;
}
.intro-arc2__figure:hover .intro-arc2__img { filter: grayscale(0); }

/* Ransom-note mixed letters: alternate rotation, weight, family (no colour) */
.intro-arc2__word {
    display: inline-block;
    margin-right: 0.25em;
}
.intro-arc2__word:nth-child(3n+1) { transform: rotate(-4deg); font-weight: 900; }
.intro-arc2__word:nth-child(3n+2) { transform: rotate(3deg);  font-family: ui-serif, Georgia, serif; font-style: italic; }
.intro-arc2__word:nth-child(3n+3) { transform: rotate(-1deg); font-weight: 700; text-transform: uppercase; }

/* Click burst spark (inherits the button's primary colour via currentColor) */
.intro-arc2__react { position: relative; overflow: visible; }
.intro-arc2__spark {
    position: absolute;
    left: 50%;
    top: 50%;
    pointer-events: none;
    animation: intro-arc2-burst 640ms ease-out forwards;
}
@keyframes intro-arc2-burst {
    to { opacity: 0; transform: translate(var(--dx), var(--dy)) scale(0.4) rotate(160deg); }
}

@media (prefers-reduced-motion: reduce) {
    .intro-arc2__ring { animation: none; }
}

/* -- Feature card hover -- */
.feat-card-hover {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.feat-card-hover:hover {
    transform: translateY(-3px);
    box-shadow: 0 0.5rem 1.5rem rgba(0,0,0,.12) !important;
}

/* -- Icon box sizing -- */
.feat-icon-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    min-width: 2.5rem;
    min-height: 2.5rem;
}
.feat-icon-box--lg {
    width: 4rem;
    height: 4rem;
    border-radius: 0.75rem;
}
.feat-icon-box--xl {
    width: 5rem;
    height: 5rem;
    border-radius: 1rem;
}
.feat-icon-box--circle {
    border-radius: 50%;
}

/* -- Nav/filmstrip button hover -- */
.feat-btn-nav {
    transition: transform 0.15s ease, background-color 0.15s ease;
}
.feat-btn-nav:hover {
    transform: scale(1.1);
}

/* -- Table row hover -- */
.feat-table-row-hover {
    transition: background-color 0.15s ease;
}
.feat-table-row-hover:hover {
    background-color: var(--bs-primary-bg-subtle) !important;
}

/* -- Accordion item hover -- */
.feat-accordion-hover summary:hover {
    background-color: var(--bs-primary-bg-subtle);
    border-radius: 0.75rem;
}

/* -- DL item hover -- */
.feat-dl-item-hover {
    transition: background-color 0.15s ease;
    border-radius: 0.5rem;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
}
.feat-dl-item-hover:hover {
    background-color: var(--bs-primary-bg-subtle);
}

/* -- Deck button hover -- */
.feat-deck-btn {
    transition: filter 0.2s ease, transform 0.15s ease;
}
.feat-deck-btn:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

/* Steps v29 — Split-Screen Steps with Sticky Icon Panel and Scrollable List */

/* Shared split-screen grid: sticky rail (narrow) + scrollable list (wide).
   No Bootstrap equivalent for an arbitrary grid-template-columns split,
   so this single custom class drives the layout in both TW and BS renders. */
.twin-pane__grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 2.5rem;
}

@media (min-width: 992px) {
    .twin-pane__grid {
        grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
    }
}

/* Sticky icon/intro rail — position:sticky is standard CSS, framework-agnostic */
@media (min-width: 992px) {
    .twin-pane__rail {
        position: sticky;
        top: 6rem;
        align-self: flex-start;
    }
}

/* Fixed-size icon badge — no Bootstrap utility matches this exact box size */
.twin-pane__icon-box {
    width: 3rem;
    height: 3rem;
}

/* Remove trailing divider/spacing on the last step item (no BS :last-child utility) */
.twin-pane__item:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

/* Block: advantages-split-border-bars */
.advantages-split-border-bars__bar--hover {
    transition: transform 0.2s ease;
}

.advantages-split-border-bars__bar--hover:hover {
    transform: scale(1.05);
}

.advantages-split-border-bars__decor-circle--top {
    animation: advantages-split-border-bars-decor-drift-kf 9s ease-in-out infinite;
}

.advantages-split-border-bars__decor-circle--bottom {
    animation: advantages-split-border-bars-decor-drift-kf 12s ease-in-out infinite reverse;
}

@keyframes advantages-split-border-bars-decor-drift-kf {
    0%,
    100% {
        transform: translateY(0px) scale(1);
    }

    50% {
        transform: translateY(-24px) scale(1.04);
    }
}


.prompt-beacon__section {
    padding-top: 6rem;
    padding-bottom: 6rem;
}

.prompt-beacon__appeal--shift:hover { transform: scale(1.05); transition: transform .2s ease; }

.prompt-beacon__sheet--haze { backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); }