/* —— Footer —— */
.site-footer {
    position: relative;
    background: url("/static/images/bg.png");
    background-size: cover;
    background-position: center;
    color: rgba(255, 255, 255, 0.9);
    padding: 80px 24px 100px;
    font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
}

/* 联系信息行 */
.footer-contact-row {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px;
}

.footer-icon-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.6;
    letter-spacing: 0.01em;
}

.footer-icon-img {
    flex-shrink: 0;
    object-fit: contain;
    filter: brightness(0) invert(1);
    opacity: 0.85;
}

/* 底部：二维码 + 使命宣言 */
.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: 24px;
    align-items: center;
    text-align: center;
    margin-bottom: 16px;
}

.footer-beian-container {
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.footer-qr {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
}

.qr-block {
    margin: 0;
    text-align: center;
}

.qr-block img {
    border-radius: 6px;
    background: #fff;
    padding: 4px;
}

.qr-block figcaption {
    margin-top: 8px;
    font-size: 0.8125rem;
    opacity: 0.8;
}

/* 使命宣言：衬线体装饰风格 */
.footer-mission-container {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.footer-mission {
    margin: 0;
    max-width: 580px;
    font-family: "Ma Shan Zheng", "KaiTi", "STKaiti", serif;
    font-size: 1.0625rem;
    font-weight: 400;
    line-height: 1.9;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 0.03em;
}

/* 备案行 */
.footer-beian-line {
    margin-top: 8px;
    font-size: 0.8125rem;
}

.footer-beian {
    color: rgba(255, 255, 255, 0.65);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-beian:hover {
    color: rgba(255, 255, 255, 1);
    text-decoration: underline;
}

/* 悬浮联系我们按钮 */
.fab-contact {
    position: fixed;
    right: 20px;
    bottom: 28px;
    z-index: 900;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: #fff;
    color: #4a6670;
    font-size: 0.7rem;
    font-weight: 700;
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
    letter-spacing: 0.04em;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    line-height: 1.3;
    padding: 6px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.fab-contact:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.24);
    text-decoration: none;
}

/* 平板及以上 */
@media (min-width: 768px) {
    .footer-contact-row {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-start;
        gap: 24px;
    }

    .footer-icon-item {
        flex: 1;
        max-width: 300px;
        font-size: 0.9375rem;
    }

    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-start;
        text-align: left;
    }

    .footer-mission-container {
        flex: 1;
        padding-left: 32px;
    }
}

/* 移动端小屏优化 */
@media (max-width: 480px) {
    .site-footer {
        padding: 56px 16px 80px;
    }

    .footer-icon-item {
        font-size: 0.9375rem;
    }

    .footer-mission {
        font-size: 1rem;
    }
}