/* Page Banner - 页面横幅 */
.page-banner {
    position: relative;
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    /* background-image: url('https://images.unsplash.com/photo-1523050854058-8df90110c9f1?w=1920'); */
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 80px;}

.page-banner .banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);}

.page-banner .banner-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #fff;}

.page-banner .banner-title {
    font-size: 48px;
    font-weight: 600;
    margin: 0 0 10px 0;
    letter-spacing: 2px;}

.page-banner .banner-subtitle {
    font-size: 20px;
    font-weight: 300;
    margin: 0;
    opacity: 0.9;
    letter-spacing: 4px;
    text-transform: uppercase;}

/* Responsive Design - 响应式设计 */
@media screen and (max-width: 991px) {
    .page-banner {
        height: 300px;
        margin-top: 60px;}

    .page-banner .banner-title {
        font-size: 36px;}

    .page-banner .banner-subtitle {
        font-size: 16px;}
}

@media screen and (max-width: 767px) {
    .page-banner {
        height: 250px;
        margin-top: 60px;}

    .page-banner .banner-title {
        font-size: 28px;}

    .page-banner .banner-subtitle {
        font-size: 14px;
        letter-spacing: 2px;}

    .breadcrumb-nav {
        padding: 15px 0;}
}

@media screen and (max-width: 567px) {
    .page-banner {
        height: 200px;}

    .page-banner .banner-title {
        font-size: 24px;}

    .page-banner .banner-subtitle {
        font-size: 12px;}
}