/* 自定义底部样式 */
#custom-footer {
    background: #0a0a0a;
    color: #b8b8b8;
    /* margin-top: 80px; */
}

/* 主要底部内容 */
.footer-main {
    padding: 60px 0 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-columns {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
}

/* 关于我们列 */
.footer-about {
    padding-right: 20px;
}

.footer-logo {
    margin-bottom: 20px;
}

.footer-logo img {
    height: 45px;
    width: auto;
}

.footer-description {
    font-size: 14px;
    line-height: 1.8;
    color: #999;
    margin-bottom: 25px;
}

/* 社交媒体图标 */
.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    color: #b8b8b8;
    transition: all 0.3s;
}

.footer-social a:hover {
    background: #c9a961;
    color: #000;
    transform: translateY(-3px);
}

/* 底部列标题 */
.footer-title {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* 底部菜单 */
.footer-menu {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-menu li {
    margin-bottom: 12px;
}

.footer-menu a {
    color: #b8b8b8;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
    display: inline-block;
}

.footer-menu a:hover {
    color: #c9a961;
    padding-left: 5px;
}

/* 联系信息 */
.footer-contact {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 15px;
    font-size: 14px;
    line-height: 1.6;
}

.footer-contact svg {
    flex-shrink: 0;
    margin-top: 2px;
    color: #c9a961;
}

.footer-contact span {
    color: #b8b8b8;
}

/* 底部版权栏 */
.footer-bottom {
    padding: 25px 0;
    background: #000;
}

.footer-bottom-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.copyright {
    margin: 0;
    font-size: 14px;
    color: #777;
}

/* 支付方式 */
.payment-methods {
    display: flex;
    align-items: center;
    gap: 12px;
}

.payment-methods span {
    font-size: 14px;
    color: #777;
    margin-right: 5px;
}

.payment-methods img {
    height: 24px;
    width: auto;
    opacity: 0.6;
    transition: opacity 0.3s;
}

.payment-methods img:hover {
    opacity: 1;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: #c9a961;
    color: #000;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(201, 169, 97, 0.3);
    transition: all 0.3s;
    z-index: 999;
}

.back-to-top:hover {
    background: #d4b76e;
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(201, 169, 97, 0.4);
}

.back-to-top.show {
    display: flex;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .footer-columns {
        grid-template-columns: 1fr 1fr;
        gap: 40px 30px;
    }

    .footer-about {
        grid-column: 1 / -1;
        padding-right: 0;
    }
}

@media (max-width: 768px) {
    .footer-main {
        padding: 40px 0 30px;
    }

    .footer-columns {
        grid-template-columns: 1fr;
        gap: 35px;
    }

    .footer-about {
        text-align: center;
    }

    .footer-logo {
        display: flex;
        justify-content: center;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }

    .payment-methods {
        justify-content: center;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    /* .footer-main {
        margin-top: 50px;
    } */

    .footer-title {
        font-size: 15px;
    }

    .footer-menu a,
    .footer-contact li,
    .footer-description {
        font-size: 13px;
    }

    .payment-methods {
        flex-wrap: wrap;
    }

    .payment-methods img {
        height: 20px;
    }
}