.vf-footer {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    padding: 64px 0 28px;
    border-top: 1px solid #0055ff;
    background: #0a0a0a;
    color: #bdbdbd;
    color-scheme: dark;
    text-align: left;
    font-size: 14px;
    line-height: 1.6;
}
.vf-footer__inner { position: relative; z-index: 1; }
.vf-footer__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 170px), 1fr));
    gap: 28px;
}
.vf-footer__grid > * { min-width: 0; }
.vf-footer .vf-footer__brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-size: 28px;
    font-weight: 800;
    line-height: 1.2;
    text-decoration: none;
}
.vf-footer__logo { flex-shrink: 0; }
.vf-footer .vf-footer__tagline { margin: 16px 0 0; font-size: 14px; color: #bdbdbd; }
.vf-footer__column h2 { margin: 8px 0 20px; color: #fff; font-size: 16px; font-weight: 700; }
.vf-footer__column ul { margin: 0; padding: 0; list-style: none; }
.vf-footer__column li { margin: 0 0 12px; }
.vf-footer__column a { color: #bdbdbd; text-decoration: none; overflow-wrap: break-word; }
.vf-footer a[href]:hover, .vf-footer a[aria-current="page"] { color: #2ecc71; }
.vf-footer a[href]:focus-visible { color: #2ecc71; outline: 2px solid #2ecc71; outline-offset: 4px; }
.vf-footer .vf-footer__copyright { margin: 72px 0 0; color: #999; font-size: 12px; }
.vf-footer::before {
    content: "";
    position: absolute;
    z-index: 0;
    left: 50%;
    bottom: 0;
    width: var(--vf-content-width, 60%);
    height: 210px;
    transform: translateX(-50%);
    background: radial-gradient(ellipse at 50% 115%, rgba(255, 255, 255, .18) 0%, rgba(223, 243, 223, .07) 30%, rgba(255, 255, 255, 0) 70%);
    pointer-events: none;
}
.vf-footer__watermark {
    position: absolute;
    z-index: 0;
    left: 50%;
    bottom: 0;
    /* 水印盒按设计稿比例缩放，下半部分由页脚裁切。 */
    transform: translate(-50%, 50%);
    width: var(--vf-content-width, 60%);
    aspect-ratio: 1152 / 350.65545654296875;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0) 9.41%, rgba(255, 255, 255, .1) 56.47%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
    opacity: 1;
    pointer-events: none;
    user-select: none;
    text-align: center;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 15vw;
    font-weight: 900;
    line-height: 1;
    letter-spacing: -.06em;
    white-space: nowrap;
}
@media (max-width: 991px) {
    .vf-footer__watermark { width: calc(100% - 32px); font-size: calc((100vw - 32px) * .3); }
    .vf-footer::before { width: calc(100% - 32px); height: 150px; }
}
@media (max-width: 767px) {
    .vf-footer { padding-block: 42px 175px; }
    .vf-footer__watermark {
        transform: translateX(-50%);
        width: 576px;
        height: 175.32772827148438px;
        font-size: 144px;
        opacity: 1;
        background: linear-gradient(180deg, rgba(255, 255, 255, 0) 9.41%, rgba(255, 255, 255, .1) 56.47%);
        -webkit-background-clip: text;
        background-clip: text;
    }
    .vf-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
    .vf-footer__brand-column { grid-column: 1 / -1; }
    .vf-footer__column h2 { margin-top: 0; margin-bottom: 14px; }
    .vf-footer .vf-footer__copyright { margin-top: 44px; text-align: center; }
}