/* Ullmatech - floating article navigation */
.ullmatech-article-nav {
    position: fixed;
    left: 24px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 999;
    width: 205px;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity .25s ease, visibility .25s ease;
}

.ullmatech-article-nav.is-visible {
    opacity: 1;
    visibility: visible;
}

.ullmatech-article-nav__inner {
    pointer-events: auto;
    padding: 15px 12px 14px;
    background: rgba(17, 18, 23, .88);
    border: 1px solid rgba(255,255,255,.08);
    border-radius: 14px;
    box-shadow: 0 14px 40px rgba(0,0,0,.28);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.ullmatech-article-nav__eyebrow {
    margin: 0 8px 10px;
    color: #8b8e97;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 1.8px;
}

.ullmatech-article-nav ol {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ullmatech-article-nav li {
    margin: 0;
    padding: 0;
}

.ullmatech-article-nav a {
    position: relative;
    display: grid;
    grid-template-columns: 27px 1fr;
    gap: 5px;
    align-items: center;
    min-height: 29px;
    padding: 5px 8px;
    border-radius: 8px;
    color: #777a83;
    text-decoration: none;
    transition: color .18s ease, background .18s ease, transform .18s ease;
}

.ullmatech-article-nav a:hover {
    color: #fff;
    background: rgba(245,27,91,.07);
}

.ullmatech-article-nav__number {
    position: relative;
    color: #555861;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: .7px;
    transition: color .18s ease;
}

.ullmatech-article-nav__label {
    font-size: 10px;
    line-height: 1.2;
    transition: color .18s ease;
}

.ullmatech-article-nav a.is-active {
    color: #fff;
    background: rgba(245,27,91,.10);
}

.ullmatech-article-nav a.is-active .ullmatech-article-nav__number {
    color: #F51B5B;
}

.ullmatech-article-nav a.is-active .ullmatech-article-nav__number::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 50%;
    width: 3px;
    height: 16px;
    border-radius: 3px;
    background: #F51B5B;
    transform: translateY(-50%);
    box-shadow: 0 0 8px rgba(245,27,91,.35);
}

@media (max-width: 1280px) {
    .ullmatech-article-nav {
        left: 12px;
        width: 185px;
    }
    .ullmatech-article-nav__label {
        font-size: 9px;
    }
}

@media (max-width: 900px) {
    .ullmatech-article-nav {
        display: none !important;
    }
}

@media (prefers-reduced-motion: reduce) {
    .ullmatech-article-nav,
    .ullmatech-article-nav a,
    .ullmatech-article-nav__number,
    .ullmatech-article-nav__label {
        transition: none !important;
    }
}