.intro-video-modal {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background:
        radial-gradient(circle at 20% 20%, rgba(255,255,255,0.05), rgba(255,255,255,0)),
        radial-gradient(circle at 80% 0%, rgba(255,255,255,0.06), rgba(255,255,255,0)),
        rgba(5, 7, 16, 0.96);
    z-index: 99999;
    backdrop-filter: blur(10px);
    width: 100vw;
    height: 100vh;
    touch-action: none;
}

.intro-video-modal.is-open {
    display: flex;
}

.intro-video-dialog {
    position: relative;
    width: min(1040px, 100%);
    max-height: 90vh;
    z-index: 1;
}

.intro-video-card {
    background: rgba(17, 20, 35, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.07);
    box-shadow: 0 20px 80px rgba(0, 0, 0, 0.45);
    border-radius: 20px;
    padding: 24px;
    color: #fff;
}

.intro-video-header {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.intro-video-logo {
    width: 140px;
    max-width: 100%;
}

.intro-video-text h2 {
    margin: 2px 0 0;
    color: #fff;
}

.intro-video-subtitle {
    margin: 0;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.75);
    font-size: 14px;
}

.intro-video-wrapper {
    position: relative;
    overflow: hidden;
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.12);
    box-shadow: 0 12px 40px rgba(0,0,0,0.35);
    background: #000;
    aspect-ratio: 16 / 9;
}

.intro-video-player {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.intro-video-hint {
    margin: 12px 0 0;
    color: rgba(255,255,255,0.78);
    text-align: center;
    font-size: 14px;
}

body.video-modal-open {
    overflow: hidden;
}

body.video-modal-open #header-sticky,
body.video-modal-open .header-1,
body.video-modal-open .header-2 {
    opacity: 0;
    pointer-events: none;
}

@media (max-width: 768px) {
    .intro-video-card {
        padding: 18px;
    }

    .intro-video-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .intro-video-logo {
        width: 120px;
    }
}