.knowledge-tree-hero {
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at 12% 24%, rgba(82, 94, 255, .13), transparent 26rem),
        radial-gradient(circle at 88% 72%, rgba(32, 178, 170, .12), transparent 24rem),
        linear-gradient(135deg, #f8f9ff 0%, #eef2ff 52%, #effaff 100%);
    border-bottom: 1px solid rgba(82, 94, 255, .1);
}

.knowledge-tree-hero::before {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(82, 94, 255, .14) 1px, transparent 1px);
    background-size: 28px 28px;
    content: "";
    opacity: .22;
    pointer-events: none;
}

.knowledge-tree-hero .container {
    z-index: 1;
    padding-top: 4.875rem !important;
}
.knowledge-tree-hero__copy { max-width: 50rem; }

.knowledge-tree-eyebrow,
.knowledge-tree-cta__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    margin-bottom: 1rem;
    color: var(--ar-primary);
    font-size: .78rem;
    font-weight: 700;
    letter-spacing: .09em;
    text-transform: uppercase;
}

.knowledge-tree-hero__copy p {
    color: #5f6a80;
    line-height: 1.65;
}

.knowledge-tree-stage {
    overflow: hidden;
    background: #b8ebf4;
}

.treeSkill.treeBg1 {
    height: 685px;
    margin: 0;
    background: #b8ebf4 url(/img/treeSkillsBg.png) top center no-repeat;
}

.treeSkill-container {
    position: relative;
    width: 1000px;
    height: 685px;
    margin: 0 auto;
}

.treeSkill-cloud {
    position: absolute;
    top: 142px;
    left: 51px;
    color: #4080a1;
    font-size: 1rem;
    font-weight: 800;
    line-height: 1.15;
    text-align: center;
    text-transform: uppercase;
}

.treeSkill-item {
    position: absolute;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: .42rem .85rem;
    color: #fff;
    font-size: .72rem;
    font-weight: 800;
    letter-spacing: .04em;
    line-height: 1.05;
    text-align: center;
    text-decoration: none;
    text-transform: uppercase;
    background: #ee6c00;
    border: 2px solid rgba(255, 255, 255, .2);
    border-radius: .45rem;
    box-shadow: 0 .4rem 1rem rgba(91, 51, 28, .16);
    transition: transform .2s ease, box-shadow .2s ease, background-color .2s ease;
}

.treeSkill-item:hover,
.treeSkill-item:focus-visible {
    z-index: 3;
    color: #fff;
    background: #ff7c12;
    box-shadow: 0 0 0 .3rem rgba(255, 255, 255, .5), 0 .8rem 2rem rgba(91, 51, 28, .28);
    transform: translateY(-3px);
}

.treeSkill-item_attention_concentration { top: 73px; left: 407px; }
.treeSkill-item_attention_switching { top: 130px; left: 384px; }
.treeSkill-item_attention_resistance { top: 148px; left: 539px; }
.treeSkill-item_attention_volume { top: 189px; left: 420px; }
.treeSkill-item_attention_divided { top: 241px; left: 360px; }
.treeSkill-item_attention_selective { top: 241px; left: 577px; }
.treeSkill-item_attention { top: 282px; left: 476px; }
.treeSkill-item_memory_volume { top: 310px; left: 190px; }
.treeSkill-item_memory_visual { top: 307px; left: 290px; }
.treeSkill-item_memory_semantic { top: 391px; left: 60px; }
.treeSkill-item_memory_accuracy { top: 387px; left: 429px; }
.treeSkill-item_reasoning_logic { top: 372px; left: 717px; }
.treeSkill-item_memory { top: 420px; left: 420px; }
.treeSkill-item_reasoning_creativity { top: 441px; left: 717px; }
.treeSkill-item_memory_spatial { top: 474px; left: 225px; }
.treeSkill-item_memory_rate { top: 479px; left: 395px; }
.treeSkill-item_reasoning_speed { top: 469px; left: 627px; }
.treeSkill-item_reasoning { top: 503px; left: 527px; }

.treeSkill-item_attention,
.treeSkill-item_memory,
.treeSkill-item_reasoning {
    padding: .5rem 1.25rem;
    font-size: 1rem;
    background: #f4425f;
    border-color: rgba(255, 255, 255, .28);
}

.treeSkill-item_memory { padding-inline: 1.8rem; }

.knowledge-tree-mobile {
    position: relative;
    display: none;
    overflow: hidden;
    background: #f5f7fb;
}

.knowledge-tree-mobile::before {
    position: absolute;
    inset: 0;
    background:
        url(/center-assets/img/svg/neuron.svg) -7rem 70% / 22rem no-repeat,
        url(/center-assets/img/svg/neural-network.svg) calc(100% + 5rem) 42% / 18rem no-repeat,
        linear-gradient(rgba(52, 113, 151, .07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(52, 113, 151, .07) 1px, transparent 1px),
        linear-gradient(135deg, #eaf7f7, #eef1ff 52%, #f5efff);
    background-size: 22rem, 18rem, 48px 48px, 48px 48px, auto;
    content: "";
    opacity: .75;
    pointer-events: none;
}

.knowledge-tree-mobile .container {
    position: relative;
    z-index: 1;
}

.knowledge-tree-mobile__scene {
    position: relative;
    height: 20rem;
    margin-bottom: 2.5rem;
    overflow: hidden;
    background: #b8ebf4 url(/img/treeSkillsBg.png) top center / auto 20rem no-repeat;
    border-radius: 1.25rem;
    box-shadow: 0 1rem 2.5rem rgba(40, 74, 104, .13);
}

.knowledge-tree-mobile__hint {
    position: absolute;
    top: 1rem;
    left: 1rem;
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    max-width: 12rem;
    padding: .7rem .9rem;
    color: #326981;
    font-size: .75rem;
    font-weight: 700;
    line-height: 1.3;
    background: rgba(255, 255, 255, .88);
    border: 1px solid rgba(255, 255, 255, .9);
    border-radius: .75rem;
    box-shadow: 0 .75rem 1.5rem rgba(40, 74, 104, .12);
    backdrop-filter: blur(8px);
}

.knowledge-tree-mobile__groups {
    display: grid;
    gap: 1rem;
}

.knowledge-tree-group {
    --tree-group: 82, 94, 255;
    padding: 1.25rem;
    background: #fff;
    border: 1px solid rgba(var(--tree-group), .16);
    border-radius: 1rem;
    box-shadow: 0 .75rem 2rem rgba(31, 42, 86, .07);
}

.knowledge-tree-group--attention { --tree-group: 21, 159, 174; }
.knowledge-tree-group--memory { --tree-group: 155, 76, 196; }
.knowledge-tree-group--reasoning { --tree-group: 239, 139, 47; }

.knowledge-tree-group__header {
    display: flex;
    align-items: center;
    gap: .8rem;
    margin-bottom: 1rem;
}

.knowledge-tree-group__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.8rem;
    height: 2.8rem;
    color: rgb(var(--tree-group));
    background: rgba(var(--tree-group), .11);
    border-radius: .8rem;
}

.knowledge-tree-group h3 a {
    color: #182037;
    text-decoration: none;
}

.knowledge-tree-group__links {
    display: flex;
    flex-wrap: wrap;
    gap: .55rem;
}

.knowledge-tree-group__links a {
    display: inline-flex;
    padding: .48rem .8rem;
    color: #3f4960;
    font-size: .82rem;
    font-weight: 600;
    text-decoration: none;
    background: rgba(var(--tree-group), .07);
    border: 1px solid rgba(var(--tree-group), .16);
    border-radius: 999px;
}

.knowledge-tree-group__links a:hover {
    color: #fff;
    background: rgb(var(--tree-group));
    border-color: rgb(var(--tree-group));
}

.knowledge-tree-cta {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    padding: 3.5rem;
    overflow: hidden;
    background: linear-gradient(125deg, #323da8 0%, #525eff 50%, #7452cd 100%);
    border-radius: 1.75rem;
    box-shadow: 0 1.75rem 4rem rgba(61, 72, 177, .24);
}

.knowledge-tree-cta__copy,
.knowledge-tree-cta__actions {
    position: relative;
    z-index: 2;
}

.knowledge-tree-cta__copy { max-width: 40rem; }
.knowledge-tree-cta__eyebrow { color: rgba(255, 255, 255, .72); }

.knowledge-tree-cta__actions {
    display: flex;
    flex: 0 0 auto;
    gap: .75rem;
}

.knowledge-tree-cta__orb {
    position: absolute;
    display: block;
    border: 1px solid rgba(255, 255, 255, .15);
    border-radius: 50%;
    pointer-events: none;
}

.knowledge-tree-cta__orb--one {
    top: -8rem;
    right: 7rem;
    width: 18rem;
    height: 18rem;
    background: rgba(255, 255, 255, .07);
}

.knowledge-tree-cta__orb--two {
    right: -5rem;
    bottom: -9rem;
    width: 22rem;
    height: 22rem;
    background: rgba(255, 255, 255, .05);
}

@media (max-width: 991.98px) {
    .knowledge-tree-stage { display: none; }
    .knowledge-tree-mobile { display: block; }

    .knowledge-tree-cta {
        align-items: flex-start;
        flex-direction: column;
        padding: 2.5rem;
    }
}

@media (max-width: 575.98px) {
    .knowledge-tree-hero__copy { padding-block: 2.5rem !important; }

    .knowledge-tree-mobile__scene {
        height: 15rem;
        background-size: auto 15rem;
    }

    .knowledge-tree-cta {
        padding: 2rem 1.5rem;
        border-radius: 1.25rem;
    }

    .knowledge-tree-cta__actions {
        width: 100%;
        flex-direction: column;
    }

    .knowledge-tree-cta__actions .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
    .treeSkill-item,
    .knowledge-tree-group__links a { transition: none; }
}