.brand-mark {
    width: 82px;
    height: 82px;
    flex-basis: 82px;
    padding: 8px;
    background: #fff;
    overflow: hidden;
}

.brand-mark img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.page-nav {
    position: sticky;
    top: 0;
    z-index: 15;
    background: rgba(247, 248, 252, .92);
    border-bottom: 1px solid rgba(79, 70, 229, .16);
    box-shadow: 0 8px 24px rgba(28, 36, 100, .08);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.page-nav-inner {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 58px;
}

.page-nav a {
    color: #5f6684;
    padding: 9px 14px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 750;
    text-decoration: none;
    white-space: nowrap;
    transition: color .18s ease, background-color .18s ease;
}

.page-nav a:hover,
.page-nav a:focus-visible {
    color: #3730a3;
    background: rgba(79, 70, 229, .1);
    outline: none;
}

#current-release,
#common-instructions,
#release-history {
    scroll-margin-top: 78px;
}

@media (max-width: 700px) {
    .page-nav-inner {
        width: 100%;
        min-height: 54px;
        padding: 0 18px;
        gap: 4px;
        overflow-x: auto;
        scrollbar-width: none;
        overscroll-behavior-inline: contain;
    }

    .page-nav-inner::-webkit-scrollbar {
        display: none;
    }

    .page-nav a {
        padding: 8px 11px;
    }

    .brand-mark {
        width: 62px;
        height: 62px;
        flex-basis: 62px;
        padding: 6px;
    }
}

/* Выразительный блок актуального релиза */
main {
    margin-top: 32px;
}

.latest {
    position: relative;
    overflow: hidden;
    color: #fff;
    border-color: rgba(255, 255, 255, .12);
    background:
        radial-gradient(circle at 88% 12%, rgba(111, 124, 255, .48), transparent 31%),
        linear-gradient(135deg, #171c3d 0%, #26366f 62%, #4050b5 100%);
}

.latest::after {
    content: "";
    position: absolute;
    right: -90px;
    top: -120px;
    width: 330px;
    height: 330px;
    border: 1px solid rgba(255, 255, 255, .13);
    border-radius: 50%;
    pointer-events: none;
}

.latest > * {
    position: relative;
    z-index: 1;
}

.latest .status {
    color: #85f0c0;
    text-transform: uppercase;
    letter-spacing: .08em;
}

.latest .status i {
    background: #47e59e;
    box-shadow: 0 0 0 5px rgba(71, 229, 158, .16);
}

.latest h2 {
    margin-top: 16px;
    color: #fff;
    font-size: clamp(44px, 7vw, 76px);
    letter-spacing: -.055em;
}

.latest .release-date {
    color: #cbd2ff;
    font-size: 17px;
}

.latest .version-badge {
    color: #fff;
    background: rgba(255, 255, 255, .11);
    border: 1px solid rgba(255, 255, 255, .18);
    backdrop-filter: blur(10px);
}

.latest .summary {
    width: min(720px, 100%);
    margin-top: 32px;
    padding: 21px 24px;
    color: #f4f5ff;
    background: rgba(255, 255, 255, .09);
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: 18px;
    backdrop-filter: blur(10px);
}

.latest-action {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-top: 25px;
    padding: 13px 18px;
    color: #202b63;
    background: #fff;
    border-radius: 13px;
    font-weight: 800;
    text-decoration: none;
    box-shadow: 0 10px 24px rgba(10, 15, 42, .18);
    transition: transform .18s ease, box-shadow .18s ease;
}

.latest-action:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 30px rgba(10, 15, 42, .25);
}

.latest .changes,
.latest .release-materials {
    color: #182033;
    background: #fff;
    border: 0;
    border-radius: 19px;
    padding: 25px;
    box-shadow: 0 12px 32px rgba(10, 15, 42, .14);
}

.latest .changes {
    scroll-margin-top: 20px;
}

@media (max-width: 700px) {
    main {
        margin-top: 20px;
    }

    .latest h2 {
        font-size: 46px;
    }

    .latest .version-badge {
        display: none;
    }

    .latest .changes,
    .latest .release-materials {
        padding: 20px;
    }
}