.card-hover-border {
    position: relative;
    z-index: 1;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.card-hover-border::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 2px;
    background: linear-gradient(135deg, transparent 50%, #C5A55A 100%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
    pointer-events: none;
}
.card-hover-border:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 30px -10px rgba(26, 26, 46, 0.1);
}
.card-hover-border:hover::before { opacity: 0.7; }