.page-banner {
    position: relative;
    height: clamp(300px, calc(8vw + 300px), 460px);
    background: var(--pb-img) center top/ cover no-repeat;
    color: #fff;
    text-align: center;
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.50);
}
.pb-content {
    position: absolute;
    inset: 0;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 40px;
    box-sizing: border-box;
}
.pb-content .container { width: 100%; }
.pb-kicker {
    display: block;
    margin: 0 0 18px;
    font-size: var(--font-size-14);
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.6);
}
.page-banner h1 {
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 800;
    line-height: 1.18;
    margin: 0 0 18px;
    color: #fff;
}
.pb-sub {
    margin: 0 auto;
    max-width: 480px;
    font-size: var(--font-size-16);
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.68);
}

/* 移动端样式由 style.css 全局 ≤768 块统一管理（含 padding-top: var(--header-height), align-items: flex-end） */