html, body {
    height: 100%;
    overflow: hidden;
}

header {
    font-family: var(--font-acumin);
    font-weight: 200;
    font-style: italic;
}

header nav ul li a {
    font-style: italic;
    font-weight: 200;
}

body {
    --menu-premium-red: #8f0613;
    --menu-brand-width: 9ch;
    --menu-brand-gap: 0.42em;
    --menu-motion-ease: cubic-bezier(0.16, 1, 0.3, 1);
    --menu-parallax-x: 0px;
    --menu-parallax-y: 0px;
    position: relative;
    background: #ffffff !important;
    isolation: isolate;
}

.menu-parallax-bg {
    position: fixed;
    inset: -18px;
    z-index: 0;
    pointer-events: none;
    background: url('../sources/images/гпт.png') center / cover no-repeat;
    transform: translate3d(var(--menu-parallax-x), var(--menu-parallax-y), 0) scale(1.04);
    transform-origin: center;
    transition: transform 180ms ease-out;
    will-change: transform;
}

.menu-ad-card {
    position: fixed;
    top: calc(var(--header-height, 92px) + env(safe-area-inset-top) + 18px);
    right: clamp(18px, 5vw, 72px);
    z-index: 1700;
    width: clamp(220px, 26vw, 330px);
    aspect-ratio: 16 / 9;
    border-radius: 18px;
    overflow: hidden;
    background: #000000;
    box-shadow: 0 18px 56px rgba(0, 0, 0, 0.12);
    isolation: isolate;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
}

.menu-ad-card[hidden] {
    display: none !important;
}

.menu-ad-frame,
.menu-ad-frame img {
    width: 100%;
    height: 100%;
}

.menu-ad-frame {
    position: relative;
    background:
        linear-gradient(145deg, rgba(255, 255, 255, 0.07), transparent 40%),
        #000000;
}

.menu-ad-frame img {
    display: block;
    object-fit: cover;
}

.menu-ad-close {
    position: absolute;
    top: 6px;
    right: 6px;
    z-index: 2;
    width: 24px;
    height: 24px;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.78);
    color: #000000;
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
}

main {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.menu {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    width: 100%;
    height: 100vh;
    padding: clamp(110px, 16vh, 160px) 20px clamp(80px, 12vh, 120px) clamp(32px, 8vw, 128px);
    overflow: visible;
    position: relative;
    z-index: 1;
}

main .menu nav {
    width: 100%;
}

main .menu nav ul {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: clamp(14px, 2vh, 22px);
    font-family: var(--font-acumin);
    font-weight: 200;
    font-size: 24px;
    letter-spacing: 0;
    list-style: none;
    text-align: left;
    justify-content: flex-start;
    flex-wrap: nowrap;
    width: 100%;
    height: auto;
    padding: 0;
    overflow: visible;
    position: relative;
    z-index: 1;
}

main .menu nav ul li.menu-item {
    display: block;
    width: max-content;
    max-width: 100%;
    white-space: nowrap;
}

main .menu nav ul li a.menu-nav-link {
    display: inline-flex;
    gap: 0;
    align-items: baseline;
    text-decoration: none;
    color: #000000;
    font-style: normal;
    font-weight: 400;
    line-height: 1.12;
    letter-spacing: 0;
    transition:
        color 520ms var(--menu-motion-ease);
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

main .menu nav ul li a.menu-nav-link:focus-visible {
    color: var(--menu-premium-red);
    outline: 1px solid var(--menu-premium-red);
    outline-color: color-mix(in srgb, var(--menu-premium-red) 74%, transparent);
    outline-offset: 8px;
}

.menu-nav-label,
.menu-nav-brand,
.menu-nav-cursor,
.menu-nav-aspan {
    display: inline-block;
}

.menu-nav-label {
    min-width: 0;
}

.menu-nav-brand {
    flex: 0 0 auto;
    max-width: 0;
    color: currentColor;
    opacity: 0;
    overflow: hidden;
    transform: translate3d(-0.34em, 0, 0);
    transition:
        max-width 460ms var(--menu-motion-ease),
        margin-right 460ms var(--menu-motion-ease),
        opacity 320ms ease-out,
        transform 420ms var(--menu-motion-ease);
    will-change: max-width, margin-right, opacity, transform;
    margin-right: 0;
    pointer-events: none;
    white-space: nowrap;
}

.menu-nav-cursor {
    margin-right: 0.3em;
    opacity: 1;
    transform: translateZ(0);
}

.menu-nav-aspan {
    opacity: 1;
}

main .menu nav ul li a.menu-nav-link.is-active,
main .menu nav ul li a.menu-nav-link:focus-visible {
    color: var(--menu-premium-red);
}

main .menu nav ul li a.menu-nav-link.is-active .menu-nav-brand,
main .menu nav ul li a.menu-nav-link:focus-visible .menu-nav-brand {
    max-width: var(--menu-brand-width);
    margin-right: var(--menu-brand-gap);
    opacity: 1;
    transform: translate3d(0, 0, 0);
}

main .menu nav ul li a.menu-nav-link.is-active .menu-nav-cursor,
main .menu nav ul li a.menu-nav-link:focus-visible .menu-nav-cursor {
    animation: none;
}

main .menu nav ul li a.menu-nav-link.is-active .menu-nav-text,
main .menu nav ul li a.menu-nav-link:focus-visible .menu-nav-text {
    animation: menu-text-blink 1.15s ease-in-out infinite;
}

@media (hover: hover) and (pointer: fine) {
    main .menu nav ul li a.menu-nav-link:hover {
        color: var(--menu-premium-red);
    }

    main .menu nav ul li a.menu-nav-link:hover .menu-nav-brand {
        max-width: var(--menu-brand-width);
        margin-right: var(--menu-brand-gap);
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }

    main .menu nav ul li a.menu-nav-link:hover .menu-nav-cursor {
        animation: none;
    }

    main .menu nav ul li a.menu-nav-link:hover .menu-nav-text {
        animation: menu-text-blink 1.15s ease-in-out infinite;
    }
}

@keyframes menu-text-blink {
    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.48;
    }
}

.menu {
    text-decoration: none;
    color: #000000; 
}

li {
    white-space: nowrap;
}



@media (max-width: 1024px) {
    main .menu nav ul {
        gap: clamp(13px, 2vh, 20px);
        font-size: 22px;
    }
    
    body { background: #ffffff !important; }
}

@media (max-width: 768px) {
    .menu {
        padding: 96px 18px 80px clamp(24px, 7vw, 64px);
    }

    .menu-ad-card {
        top: calc(var(--header-height, 82px) + env(safe-area-inset-top) + 10px);
        right: 16px;
        width: clamp(174px, 42vw, 260px);
        border-radius: 15px;
    }
    
    main .menu nav ul {
        gap: 16px;
        font-size: 20px;
    }
    
    body { background: #ffffff !important; }
}

@media (max-width: 480px) {
    .menu {
        padding: 92px 16px 72px 24px;
    }

    .menu-ad-card {
        width: min(64vw, 230px);
        right: 12px;
    }
    
    main .menu nav ul {
        gap: 14px;
        font-size: 18px;
    }
    
    body { background: #ffffff !important; }
}

@media (max-width: 360px) {
    .menu {
        padding: 88px 14px 68px 20px;
    }
    
    main .menu nav ul {
        gap: 12px;
        font-size: 16px;
    }
    
    body { background: #ffffff !important; }
}

@media (prefers-reduced-motion: reduce) {
    main .menu nav ul li a.menu-nav-link,
    .menu-nav-brand {
        transition-duration: 1ms;
    }

    main .menu nav ul li a.menu-nav-link.is-active .menu-nav-cursor,
    main .menu nav ul li a.menu-nav-link:focus-visible .menu-nav-cursor,
    main .menu nav ul li a.menu-nav-link:hover .menu-nav-cursor,
    main .menu nav ul li a.menu-nav-link.is-active .menu-nav-text,
    main .menu nav ul li a.menu-nav-link:focus-visible .menu-nav-text,
    main .menu nav ul li a.menu-nav-link:hover .menu-nav-text {
        animation: none;
    }

    .menu-parallax-bg {
        transform: scale(1.04);
        transition-duration: 1ms;
    }
}