.stage {
    transform: scale(var(--intro-scale, 1));

    filter: blur(var(--intro-blur, 0px)) brightness(var(--intro-dim, 1));

    transition:
        transform 380ms cubic-bezier(0.2, 0.8, 0.3, 1),
        filter 380ms cubic-bezier(0.2, 0.8, 0.3, 1);
}

html.is-intro-armed .stage {
    will-change: transform, filter;
}

html.is-intro-armed .stage {
    opacity: 0;
}

html.is-intro-armed.is-intro-live .stage {
    opacity: 1;
    transition: opacity 240ms ease-out;
}

html.is-held .stage {
    pointer-events: none;
}

html:not(.is-held) .stage {
    pointer-events: auto;
}

.intro-warn {
    position: fixed;
    inset: 0;
    z-index: 60;
    display: grid;
    place-items: center;
    padding: 20px;
    background: rgb(0 0 0 / 0.92);
    visibility: hidden;
    opacity: 0;

    transition: opacity 240ms ease-out;
}

html.is-intro-armed .intro-warn {
    visibility: visible;
    opacity: 1;
}

.intro-warn__card {
    width: var(--intro-warn-w);
    padding: var(--intro-warn-pad);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--intro-warn-radius);
    background: linear-gradient(165deg, #14141a 0%, #0a0a0e 100%);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.9);
    text-align: left;
}

.intro-warn__card::before {
    content: "";
    display: block;
    height: 3px;
    margin: calc(var(--intro-warn-pad) * -1) calc(var(--intro-warn-pad) * -1) var(--intro-warn-pad);
    background: rgb(var(--glitch-r));
}

.intro-warn__title {
    margin: 0 0 0.75rem;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.34em;
    text-transform: uppercase;
    color: rgb(var(--glitch-r));
}

.intro-warn__lead {
    margin: 0 0 0.9rem;
    font-size: 1.05rem;
    line-height: 1.45;
    color: var(--text);
}

.intro-warn__body {
    margin: 0 0 0.9rem;
    font-size: 0.88rem;
    line-height: 1.6;
    color: rgba(243, 243, 247, 0.66);
}

.intro-warn__body strong {
    color: rgba(243, 243, 247, 0.92);
    font-weight: 600;
}

.intro-warn__btn {
    display: block;
    width: 100%;

    min-height: 44px;
    padding: 0.8rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
    font: inherit;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 160ms ease-out, border-color 160ms ease-out;
}

.intro-warn__btn:hover,
.intro-warn__btn:focus-visible {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.4);
}

html.is-intro-armed .intro-warn.is-gone {
    opacity: 0;
    pointer-events: none;
    transition: opacity 420ms ease-out;
}

.intro-site {
    position: fixed;
    inset: 0;
    z-index: 50;
    pointer-events: none;
    opacity: 0;
    mix-blend-mode: difference;
    -webkit-mix-blend-mode: difference;
    background-image:
        repeating-linear-gradient(
            180deg,
            rgb(var(--glitch-r) / 0.5) 0,
            rgb(var(--glitch-r) / 0.5) calc(2 * var(--px)),
            rgb(0 0 0 / 0.6) calc(2 * var(--px)),
            rgb(0 0 0 / 0.6) calc(9 * var(--px)),
            rgb(var(--glitch-b) / 0.45) calc(11 * var(--px)),
            rgb(var(--glitch-b) / 0.45) calc(14 * var(--px)),
            rgb(0 0 0 / 0.6) calc(14 * var(--px)),
            rgb(0 0 0 / 0.6) calc(22 * var(--px))
        ),
        repeating-linear-gradient(
            90deg,
            rgb(0 0 0 / 0.55) 0,
            rgb(0 0 0 / 0.55) calc(3 * var(--px)),
            rgb(0 0 0 / 0) calc(3 * var(--px)),
            rgb(0 0 0 / 0) calc(37 * var(--px))
        );
    background-size: 100% calc(22 * var(--px)), calc(37 * var(--px)) 100%;
}

html.is-site-glitch .intro-site {
    animation: site-glitch 460ms steps(1, end) 1;
}

@keyframes site-glitch {
    0%   { opacity: 0.6; background-position-y: 0, 0; }
    12%  { opacity: 0.12; background-position-y: calc(-88 * var(--px)), calc(74 * var(--px)); }
    26%  { opacity: 0.5; background-position-y: calc(154 * var(--px)), calc(-37 * var(--px)); }
    38%  { opacity: 0.08; background-position-y: calc(-44 * var(--px)), calc(148 * var(--px)); }
    52%  { opacity: 0.42; background-position-y: calc(220 * var(--px)), calc(-222 * var(--px)); }
    64%  { opacity: 0.1; background-position-y: calc(-176 * var(--px)), calc(37 * var(--px)); }
    78%  { opacity: 0.34; background-position-y: calc(66 * var(--px)), calc(-185 * var(--px)); }
    90%  { opacity: 0.06; background-position-y: calc(-22 * var(--px)), calc(74 * var(--px)); }
    100% { opacity: 0; background-position-y: 0, 0; }
}

.intro-blink {
    position: fixed;
    inset: 0;
    z-index: 51;
    pointer-events: none;
    opacity: 0;
    background: #fff;
}

html.is-site-glitch .intro-blink {
    animation: intro-blink 460ms steps(1, end) 1;
}

@keyframes intro-blink {
    0%   { opacity: 0.5; }
    7%   { opacity: 0.05; }
    15%  { opacity: 0.28; }
    24%  { opacity: 0.04; }
    100% { opacity: 0; }
}

@media (max-width: 560px) {
    .intro-warn__lead { font-size: 0.95rem; }
    .intro-warn__body { font-size: 0.8rem; }
}