/* ========== 万维轮播图 ========== */
.wv-banner {
    position: relative;
    width: 100%;
    height: 656px;
    overflow: hidden;
}
.wv-banner .wv-banner-inner {
    position: relative;
    width: 100%;
    height: 100%;
}
.wv-banner .wv-banner-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    z-index: 0;
    transition: opacity 0.6s ease;
}
.wv-banner .wv-banner-item:first-child {
    opacity: 1;
    z-index: 1;
}
.wv-banner .wv-banner-item img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
}
.wv-banner .wv-banner-dots {
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 100%;
    text-align: center;
    z-index: 10;
}
.wv-banner .wv-banner-dot {
    display: inline-block;
    width: 12px;
    height: 12px;
    margin: 0 6px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: all 0.3s;
}
.wv-banner .wv-banner-dot.active {
    background: #fff;
}
.wv-banner .wv-banner-prev,
.wv-banner .wv-banner-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    width: 50px;
    height: 50px;
    background: rgba(0,0,0,0.3);
    border: none;
    cursor: pointer;
    font-size: 24px;
    color: #fff;
    line-height: 50px;
    text-align: center;
    transition: all 0.3s;
    display: none;
}
.wv-banner .wv-banner-prev:hover,
.wv-banner .wv-banner-next:hover {
    background: rgba(0,0,0,0.6);
}
.wv-banner .wv-banner-prev { left: 0; border-radius: 0 4px 4px 0; }
.wv-banner .wv-banner-next { right: 0; border-radius: 4px 0 0 4px; }
.wv-banner:hover .wv-banner-prev,
.wv-banner:hover .wv-banner-next { display: block; }

/* 不同屏幕宽度下的高度 */
@media (max-width: 1600px) {
    .wv-banner { height: 576px; }
}
@media (max-width: 1440px) {
    .wv-banner { height: 544px; }
}
@media (max-width: 1200px) {
    .wv-banner { height: 512px; }
    .wv-banner .wv-banner-dot { width: 8px; height: 8px; margin: 0 4px; }
}
@media (max-width: 992px) {
    .wv-banner { height: 432px; }
}
@media (max-width: 768px) {
    .wv-banner { height: 180px; }
}
@media (max-width: 480px) {
    .wv-banner { height: 180px; }
}