html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
    background-color: #FFC40C;
    font-family: "Noto Serif JP", serif;
    color: #000;
    overflow: hidden;
}

.loader {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #FFC40C;
    z-index: 10;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.loader.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader-text {
    font-size: 6rem;
    font-weight: 500;
    line-height: 1;
    display: inline-flex;
    align-items: center;
}

.cursor {
    display: inline-block;
    width: 0.08em;
    height: 1em;
    background-color: #000;
    margin-left: 0.08em;
    animation: blink 0.9s steps(1, end) infinite;
}

@keyframes blink {
    0%, 50%   { opacity: 1; }
    50.01%, 100% { opacity: 0; }
}

.page {
    position: fixed;
    inset: 0;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.page.hidden {
    opacity: 0;
    pointer-events: none;
}

.menu {
    position: absolute;
    top: 2rem;
    left: 2.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.menu-item {
    font-family: "Noto Serif JP", serif;
    font-size: 1.5rem;
    font-weight: 500;
    color: #000;
    text-decoration: none;
    line-height: 1.4;
    cursor: pointer;
}

.subpage {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #FFC40C;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.subpage.hidden {
    opacity: 0;
    pointer-events: none;
}

.subpage-text {
    font-size: 2rem;
    font-weight: 400;
}

.return-btn {
    position: absolute;
    top: 2rem;
    left: 2.25rem;
    font-family: "Noto Serif JP", serif;
    font-size: 1.5rem;
    font-weight: 500;
    color: #000;
    text-decoration: none;
    line-height: 1.4;
    cursor: pointer;
}

.glitch {
    white-space: pre;
}