.reader-chapter-music {
    display: grid;
    grid-template-columns: 92px 44px minmax(0, 1fr);
    align-items: center;
    gap: 12px;
    width: min(820px, 100%);
    margin: 22px auto 36px;
    padding: 10px 12px;
    border: 1px solid var(--reader-border, color-mix(in srgb, currentColor 16%, transparent));
    border-radius: 14px;
    background: color-mix(in srgb, var(--reader-page-bg, transparent) 88%, currentColor 2%);
    box-sizing: border-box;
}

.reader-chapter-music__cover-wrap {
    position: relative;
    display: grid;
    place-items: center;
    width: 84px;
    height: 84px;
}

.reader-chapter-music__cover {
    display: block;
    box-sizing: border-box;
    width: 84px;
    max-width: none;
    height: 84px;
    margin: 0;
    object-fit: cover;
    object-position: center;
    border-radius: 12px;
    background: color-mix(in srgb, currentColor 6%, transparent);
    box-shadow: 0 3px 10px color-mix(in srgb, currentColor 10%, transparent);
}

.reader-chapter-music__cover--placeholder {
    display: grid;
    place-items: center;
    font-size: 26px;
    opacity: .55;
}



.reader-chapter-music__runtime {
    position: fixed !important;
    left: -10000px !important;
    top: -10000px !important;
    width: 1px !important;
    height: 1px !important;
    overflow: hidden !important;
    opacity: 0 !important;
    pointer-events: none !important;
}

.reader-chapter-music__runtime iframe {
    display: block;
    width: 1px;
    height: 1px;
    border: 0;
}

.reader-chapter-music__play.is-playing {
    font-size: 11px;
}

.reader-chapter-music__player,
.reader-chapter-music__external {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    flex: 0 0 auto;
}

.reader-chapter-music__play,
.reader-chapter-music__control,
.reader-inline-youtube button {
    display: grid;
    place-items: center;
    border: 1px solid currentColor;
    border-radius: 999px;
    background: transparent;
    color: inherit;
    cursor: pointer;
    font: inherit;
}

.reader-chapter-music__play {
    width: 42px;
    height: 42px;
    padding: 0;
    font-size: 13px;
}

.reader-chapter-music__control {
    width: 28px;
    height: 28px;
    padding: 0;
    font-size: 18px;
    line-height: 1;
}

.reader-chapter-music__info {
    min-width: 0;
    overflow: hidden;
}

.reader-chapter-music__eyebrow {
    display: block;
    margin-bottom: 4px;
    font-size: 11px;
    font-weight: 750;
    letter-spacing: .065em;
    opacity: .68;
}

.reader-chapter-music__headline {
    display: flex;
    align-items: baseline;
    gap: 10px;
    min-width: 0;
}

.reader-chapter-music__headline strong,
.reader-chapter-music__headline small {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.reader-chapter-music__headline strong {
    flex: 0 1 auto;
    font-size: 1.04em;
    font-weight: 750;
}

.reader-chapter-music__headline small {
    flex: 1 1 auto;
    min-width: 0;
    font-size: .9em;
    opacity: .82;
}

.reader-chapter-music__ticker {
    position: relative;
    overflow: hidden;
    width: 100%;
    margin-top: 6px;
    font-size: .82em;
    opacity: .78;
    white-space: nowrap;
    mask-image: linear-gradient(90deg, transparent 0, #000 14px, #000 calc(100% - 14px), transparent 100%);
}

.reader-chapter-music__ticker-track {
    display: inline-flex;
    min-width: 100%;
    gap: 48px;
    will-change: transform;
}

.reader-chapter-music__ticker [data-reader-music-ticker-clone] {
    display: none;
}

.reader-chapter-music__ticker.is-scrolling .reader-chapter-music__ticker-track {
    width: max-content;
    min-width: 0;
    animation: reader-music-ticker 16s linear infinite;
}

.reader-chapter-music__ticker.is-scrolling [data-reader-music-ticker-clone] {
    display: inline;
}

.reader-inline-youtube__frame {
    width: 100%;
}

.reader-inline-youtube__frame iframe {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    border: 0;
    border-radius: 12px;
}

@keyframes reader-music-ticker {
    from { transform: translateX(0); }
    to { transform: translateX(calc(-50% - 24px)); }
}

@media (prefers-reduced-motion: reduce) {
    .reader-chapter-music__ticker.is-scrolling .reader-chapter-music__ticker-track {
        animation: none;
        transform: none;
    }

    .reader-chapter-music__ticker.is-scrolling [data-reader-music-ticker-clone] {
        display: none;
    }
}

@media (max-width: 700px) {
    .reader-chapter-music {
        grid-template-columns: 74px 38px minmax(0, 1fr);
        gap: 8px;
        width: 100%;
        margin: 18px 0 30px;
        padding: 8px 9px;
        border-radius: 12px;
    }

    .reader-chapter-music__cover-wrap,
    .reader-chapter-music__cover {
        width: 68px;
        height: 68px;
    }

    .reader-chapter-music__cover {
        border-radius: 10px;
    }


    .reader-chapter-music__player {
        gap: 4px;
    }

    .reader-chapter-music__control {
        display: none;
    }

    .reader-chapter-music__play {
        width: 36px;
        height: 36px;
    }

    .reader-chapter-music__headline {
        display: grid;
        gap: 2px;
    }

    .reader-chapter-music__headline strong,
    .reader-chapter-music__headline small {
        display: block;
        width: 100%;
    }

    .reader-chapter-music__headline strong {
        font-size: .98em;
    }

    .reader-chapter-music__headline small {
        font-size: .84em;
    }

    .reader-chapter-music__ticker {
        margin-top: 4px;
        font-size: .76em;
    }
}

.chapter-youtube-paragraph {
    margin-block: 1.65em;
}

.reader-inline-youtube {
    width: min(760px, 100%);
    margin-inline: auto;
}

.reader-inline-youtube__preview {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    border: 1px solid var(--reader-border, rgba(127, 127, 127, .22));
    border-radius: 14px;
    background: #111;
}

.reader-inline-youtube__thumbnail {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.reader-inline-youtube__shade {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, .02) 40%, rgba(0, 0, 0, .64) 100%);
    pointer-events: none;
}

.reader-inline-youtube__play {
    position: absolute;
    left: 50%;
    top: 50%;
    display: grid;
    width: 62px;
    height: 62px;
    padding: 0;
    place-items: center;
    transform: translate(-50%, -50%);
    border: 1px solid rgba(255, 255, 255, .88);
    background: rgba(14, 14, 14, .72);
    color: #fff;
    box-shadow: 0 8px 24px rgba(0, 0, 0, .24);
    backdrop-filter: blur(4px);
}

.reader-inline-youtube__play:hover,
.reader-inline-youtube__play:focus-visible {
    transform: translate(-50%, -50%) scale(1.05);
    background: rgba(190, 20, 20, .92);
}

.reader-inline-youtube__play span {
    margin-left: 4px;
    font-size: 23px;
    line-height: 1;
}

.reader-inline-youtube__caption {
    position: absolute;
    right: 16px;
    bottom: 14px;
    left: 16px;
    display: grid;
    gap: 2px;
    color: #fff;
    pointer-events: none;
    text-shadow: 0 1px 4px rgba(0, 0, 0, .55);
}

.reader-inline-youtube__caption span {
    font-size: 10px;
    font-weight: 800;
    letter-spacing: .09em;
    text-transform: uppercase;
    opacity: .82;
}

.reader-inline-youtube__caption strong {
    font-size: 14px;
    font-weight: 700;
}

.reader-inline-youtube__frame:not(:empty) {
    overflow: hidden;
    aspect-ratio: 16 / 9;
    border-radius: 14px;
    background: #000;
}

.reader-inline-youtube__frame iframe {
    display: block;
    width: 100%;
    height: 100%;
    border: 0;
}

@media (max-width: 700px) {
    .chapter-youtube-paragraph {
        margin-block: 1.25em;
    }

    .reader-inline-youtube__preview,
    .reader-inline-youtube__frame:not(:empty) {
        border-radius: 11px;
    }

    .reader-inline-youtube__play {
        width: 52px;
        height: 52px;
    }

    .reader-inline-youtube__play span {
        font-size: 19px;
    }
}

/* iOS standalone PWA fallback: show the real YouTube player so playback starts from
   a direct user gesture inside the iframe. Other platforms keep the hidden runtime. */
.reader-chapter-music__runtime.is-ios-pwa-visible {
    position: relative !important;
    left: auto !important;
    top: auto !important;
    grid-column: 1 / -1;
    width: 100% !important;
    height: auto !important;
    overflow: visible !important;
    opacity: 1 !important;
    pointer-events: auto !important;
}

.reader-chapter-music__runtime.is-ios-pwa-visible iframe {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    border: 0;
    border-radius: 12px;
}


/* Keep the metadata in its original first-row column when the iOS PWA player
   expands into a full-width second row. */
.reader-chapter-music__runtime.is-ios-pwa-visible + .reader-chapter-music__info {
    grid-column: 3;
    grid-row: 1;
}