.split-screen-halo {
    width: 600px;
    height: 600px;
}

.split-screen-halo-soft {
    width: 500px;
    height: 500px;
}

.split-screen-beam-main {
    width: 24rem;
    height: 1px;
}

.split-screen-beam-side {
    width: 20rem;
    height: 1px;
}

.split-screen-frame {
    width: 6rem;
    height: 6rem;
}

.split-screen-orb {
    width: 4rem;
    height: 4rem;
}

.split-screen-marker {
    width: 2rem;
    height: 2rem;
}

.split-screen-emblem {
    width: 5rem;
    min-width: 5rem;
    height: 5rem;
    min-height: 5rem;
    box-sizing: border-box;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

@media (min-width: 1024px) {
    .split-screen-principle--odd {
        margin-left: 2rem;
    }
}

/* v25 - chat bubble speech tail (border-triangle trick has no TW/BS utility) */
[data-chat-bubble] {
    position: relative;
}

[data-bubble-side="left"] [data-chat-bubble]::before {
    content: "";
    position: absolute;
    top: 1.25rem;
    left: -0.5rem;
    width: 0;
    height: 0;
    border-top: 0.5rem solid transparent;
    border-bottom: 0.5rem solid transparent;
    border-right: 0.5rem solid currentColor;
    color: inherit;
    opacity: 0.15;
}

[data-bubble-side="right"] [data-chat-bubble]::before {
    content: "";
    position: absolute;
    top: 1.25rem;
    right: -0.5rem;
    width: 0;
    height: 0;
    border-top: 0.5rem solid transparent;
    border-bottom: 0.5rem solid transparent;
    border-left: 0.5rem solid currentColor;
    color: inherit;
    opacity: 0.15;
}

.lane-card-hover {
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.lane-card-overlay,
.lane-card-accent,
.lane-card-icon {
    transition: opacity 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

.lane-card-hover:hover {
    transform: translateY(-0.35rem);
    box-shadow: var(--bs-box-shadow-lg);
    border-color: rgba(var(--bs-primary-rgb), 0.35) !important;
}

.lane-card-hover:hover .lane-card-overlay {
    opacity: 1 !important;
}

.lane-card-hover:hover .lane-card-accent {
    opacity: 0.75;
}

.lane-card-hover:hover .lane-card-icon {
    transform: scale(1.05);
    box-shadow: var(--bs-box-shadow);
}

.feature-card-surface {
    position: relative;
    isolation: isolate;
    background: var(--bs-body-bg);
    border: 1px solid var(--bs-border-color-translucent);
    box-shadow: var(--bs-box-shadow-sm);
    transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
}

.feature-card-surface:hover {
    box-shadow: var(--bs-box-shadow-lg);
    border-color: rgba(var(--bs-primary-rgb), 0.3);
}

/* -- 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);
}
/* whyus v28 — mind-map spotlight panel with open branch text blocks */

/* Spotlight panel — clip-path wipe reveal on load (single play, no BS analog) */
@keyframes whyusMindmapWipe {
    from {
        clip-path: inset(0 100% 0 0);
    }
    to {
        clip-path: inset(0 0 0 0);
    }
}

.whyus-mindmap__panel {
    animation: whyusMindmapWipe 900ms ease-out both;
}

/* Corner brackets — four marks pinned to the spotlight frame's corners */
.whyus-mindmap__corner {
    position: absolute;
    line-height: 1;
}

.whyus-mindmap__corner--tl {
    top: -0.5rem;
    left: -0.5rem;
}

.whyus-mindmap__corner--tr {
    top: -0.5rem;
    right: -0.5rem;
}

.whyus-mindmap__corner--bl {
    bottom: -0.5rem;
    left: -0.5rem;
}

.whyus-mindmap__corner--br {
    bottom: -0.5rem;
    right: -0.5rem;
}