/* 开场动画：覆盖首页，播完淡出 */

.opening {
    position: fixed;
    inset: 0;
    z-index: 300;
    display: grid;
    place-items: center;
    background: #050403;
    transition: opacity 700ms var(--ease);
}

.opening.is-done {
    opacity: 0;
    pointer-events: none;
}

.opening__video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    cursor: pointer;
}

.opening__skip {
    position: absolute;
    right: 24px;
    bottom: 24px;
    padding: 7px 18px;
    border: 1px solid rgba(201, 162, 39, 0.42);
    border-radius: 3px;
    background: rgba(10, 8, 6, 0.55);
    color: var(--gold);
    font-size: 12px;
    letter-spacing: 0.18em;
    cursor: pointer;
    transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.opening__skip:hover {
    border-color: var(--gold);
    color: var(--gold-bright);
}

.opening__sound {
    position: absolute;
    left: 50%;
    bottom: 30px;
    transform: translateX(-50%);
    padding: 9px 22px;
    border: 1px solid rgba(201, 162, 39, 0.55);
    border-radius: 3px;
    background: rgba(10, 8, 6, 0.66);
    color: var(--gold-bright);
    font-size: 13px;
    letter-spacing: 0.12em;
    cursor: pointer;
    animation: opening-sound-pulse 1.8s ease-in-out infinite;
}

.opening__sound[hidden] { display: none; }

.opening__sound:hover { border-color: var(--gold-bright); }

@keyframes opening-sound-pulse {
    0%, 100% { opacity: 0.72; }
    50% { opacity: 1; }
}

body.opening-lock {
    overflow: hidden;
}