/* 底部页脚样式 */
.footer {
    position: relative;
    background: linear-gradient(to bottom, transparent, rgba(3, 5, 11, 0.8) 30%, #03050b 100%);
    border-top: 1px solid rgba(255, 255, 255, 0.03);
    padding: 80px 0 40px;
    margin-top: 60px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.footer::before {
    content: '';
    position: absolute;
    top: -100px;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to bottom, transparent, rgba(3, 5, 11, 0.4));
    pointer-events: none;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2.5fr 1fr 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 60px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
    line-height: 1.8;
    margin-top: 24px;
    max-width: 320px;
}

.footer-logo-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-logo {
    height: 36px;
    width: auto;
    object-fit: contain;
    mix-blend-mode: screen;
    border-radius: 8px; /* 柔和化 logo 边缘 */
}

.footer-brand-name {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 1px;
    background: linear-gradient(90deg, #fff, #a0afd6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 24px;
    letter-spacing: 1px;
}

.footer-links a {
    display: block;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    margin-bottom: 12px;
    font-size: 14px;
    transition: color 0.3s ease, transform 0.3s ease;
}

.footer-links a:hover {
    color: #23f7ff;
    transform: translateX(4px);
}

.footer-contact p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    margin-bottom: 12px;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    color: rgba(255, 255, 255, 0.4);
    font-size: 13px;
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 1100px) {
    .footer {
        padding: 68px 0 34px;
    }

    .footer-grid {
        grid-template-columns: 1.8fr 1fr 1fr;
        gap: 32px;
    }

    .footer-contact {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    .footer {
        margin-top: 46px;
        padding: 56px 0 26px;
    }

    .footer-grid {
        margin-bottom: 34px;
        gap: 22px;
    }

    .footer-brand p {
        max-width: 100%;
        font-size: 13px;
        line-height: 1.7;
        margin-top: 14px;
    }

    .footer h4 {
        margin-bottom: 14px;
        font-size: 15px;
    }

    .footer-links a,
    .footer-contact p {
        font-size: 13px;
        margin-bottom: 10px;
    }

    .footer-bottom {
        padding-top: 20px;
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .footer {
        padding: 46px 0 20px;
    }

    .footer-logo {
        height: 32px;
    }

    .footer-brand-name {
        font-size: 18px;
    }
}

@media (max-width: 390px) {
    .footer {
        margin-top: 34px;
        padding: 36px 0 18px;
    }

    .footer-grid {
        gap: 18px;
        margin-bottom: 24px;
    }

    .footer-brand-name {
        font-size: 16px;
    }

    .footer h4 {
        font-size: 14px;
        margin-bottom: 10px;
    }
}

@media (min-width: 768px) and (max-width: 1180px) and (orientation: landscape) {
    .footer {
        padding: 48px 0 24px;
    }

    .footer-grid {
        grid-template-columns: 1.4fr 1fr 1fr;
        gap: 22px;
        margin-bottom: 28px;
    }
}

@media (min-width: 1600px) {
    .footer {
        padding: 92px 0 46px;
    }

    .footer-grid {
        grid-template-columns: 2.8fr 1fr 1fr 1.4fr;
        gap: 56px;
    }

    .footer h4 {
        font-size: 17px;
    }

    .footer-links a,
    .footer-contact p {
        font-size: 15px;
    }
}