/* ===== 页脚样式 ===== */
.footer {
    background: var(--dark-gray);
    color: #B0BEC5;
    padding: 48px 0 24px;
    margin-top: 60px;
}
.footer__inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}
.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer__brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}
.footer__brand-icon {
    width: 32px;
    height: 32px;
}
.footer__brand-name {
    font-size: 1.125rem;
    font-weight: 800;
    color: var(--white);
}
.footer__brand-tagline {
    font-size: 0.875rem;
    line-height: 1.5;
    margin-bottom: 16px;
}
.footer__brand-domain {
    font-size: 0.8rem;
    color: var(--coral-blue);
    font-weight: 600;
}
.footer__col-title {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}
.footer__link {
    display: block;
    padding: 4px 0;
    font-size: 0.875rem;
    color: #B0BEC5;
    transition: color var(--transition-fast);
}
.footer__link:hover {
    color: var(--coral-blue);
}
.footer__bottom {
    border-top: 1px solid #37474F;
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}
.footer__copyright {
    font-size: 0.8rem;
}
.footer__bottom-links {
    display: flex;
    gap: 20px;
}
.footer__bottom-link {
    font-size: 0.8rem;
    color: #B0BEC5;
    transition: color var(--transition-fast);
}
.footer__bottom-link:hover {
    color: var(--coral-blue);
}

@media (max-width: 1024px) {
    .footer__grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
}
@media (max-width: 767px) {
    .footer {
        padding: 32px 0 20px;
    }
    .footer__grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .footer__bottom {
        flex-direction: column;
        text-align: center;
    }
}