/* ============================================
   腾隍纽扣 - 企业官网页脚
   ============================================ */

.site-footer {
    --footer-bg: #2c3e50;
    --footer-bg-deep: #1f2d3a;
    --footer-text: #ffffff;
    --footer-muted: rgba(255, 255, 255, 0.72);
    --footer-dim: rgba(255, 255, 255, 0.45);
    --footer-accent: #6a79d9;
    --footer-border: rgba(255, 255, 255, 0.08);
    font-family: 'AlibabaPuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--footer-text);
    background-color: var(--footer-bg);
    background-image:
        radial-gradient(ellipse 80% 50% at 100% 0%, rgba(106, 121, 217, 0.12) 0%, transparent 55%),
        radial-gradient(ellipse 60% 40% at 0% 100%, rgba(0, 0, 0, 0.15) 0%, transparent 50%);
    position: relative;
    overflow: hidden;
}

/* 顶部分隔线 */
.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--footer-accent), transparent);
    opacity: 0.85;
}

.site-footer .footer-main {
    padding: 88px 0 64px;
    position: relative;
    z-index: 1;
}

@media (max-width: 991.98px) {
    .site-footer .footer-main {
        padding: 56px 0 44px;
    }
}

/* 品牌区 */
.footer-brand .footer-company-name {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    margin-bottom: 14px;
    line-height: 1.4;
    color: var(--footer-text);
}

.footer-brand .footer-intro {
    font-size: 0.9rem;
    line-height: 1.85;
    color: var(--footer-muted);
    margin: 0;
    max-width: 320px;
}

@media (min-width: 992px) {
    .footer-brand .footer-intro {
        max-width: none;
    }
}

/* 栏目标题 */
.footer-heading {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--footer-text);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--footer-border);
    position: relative;
}

@media (max-width: 767.98px) {
    .footer-heading {
        margin-bottom: 16px;
        padding-bottom: 8px;
        font-size: 0.8rem;
    }
}

.footer-heading::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 36px;
    height: 2px;
    background: var(--footer-accent);
}

/* 「关注我们」：标题与装饰线始终居中 */
.footer-heading--follow {
    text-align: center;
    max-width: 12rem;
    margin-left: auto;
    margin-right: auto;
}

.footer-heading--follow::after {
    left: 50%;
    right: auto;
    transform: translateX(-50%);
}

@media (min-width: 992px) {
    .site-footer .footer-brand .footer-company-name {
        font-size: 1.05rem;
    }

    .site-footer .footer-brand .footer-intro {
        font-size: 0.85rem;
    }
}

/* 链接列表 */
.footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-links li + li {
    margin-top: 12px;
}

.footer-links a {
    color: var(--footer-muted);
    text-decoration: none;
    font-size: 0.92rem;
    transition: color 0.25s ease, padding-left 0.25s ease;
    display: inline-block;
}

.footer-links a:hover {
    color: var(--footer-text);
    padding-left: 4px;
}

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

.footer-contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.9rem;
    line-height: 1.65;
    color: var(--footer-muted);
}

.footer-contact-list li + li {
    margin-top: 18px;
}

.footer-contact-list .fa,
.footer-contact-list .fas,
.footer-contact-list .far {
    color: var(--footer-accent);
    margin-top: 2px;
    flex-shrink: 0;
    width: 18px;
    text-align: center;
    font-size: 0.95rem;
    line-height: 1.35;
    opacity: 0.95;
}

.footer-contact-list a {
    color: var(--footer-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-contact-list a:hover {
    color: var(--footer-text);
}

/* 二维码区：*/
.footer-qr-col {
    text-align: center;
}

.footer-qr-grid {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: flex-start;
    justify-content: center;
    gap: 18px;
}

@media (min-width: 576px) {
    .footer-qr-grid {
        gap: 26px;
    }
}

.footer-qr-item {
    flex: 1 1 0;
    min-width: 0;
    max-width: 200px;
}

@media (min-width: 992px) {
    .footer-qr-item {
        max-width: none;
    }
}

.footer-qr-frame {
    aspect-ratio: 1;
    width: 100%;
    max-width: 200px;
    margin-left: auto;
    margin-right: auto;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: #fff;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.22);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

@media (min-width: 992px) {
    .footer-qr-frame {
        max-width: none;
    }
}

.footer-qr-frame:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 32px rgba(0, 0, 0, 0.28);
    border-color: rgba(106, 121, 217, 0.45);
}

.footer-qr-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.footer-qr-caption {
    margin: 10px 0 0;
    font-size: 0.8rem;
    color: var(--footer-muted);
    letter-spacing: 0.04em;
    white-space: nowrap;
}

/* 底栏 */
.footer-bottom {
    background: var(--footer-bg-deep);
    border-top: 1px solid var(--footer-border);
    padding: 24px 0 28px;
    text-align: center;
}

.footer-copyright {
    margin: 0;
    font-size: 0.82rem;
    color: var(--footer-dim);
    letter-spacing: 0.06em;
    line-height: 1.6;
}

.footer-copyright-link {
    color:var(--footer-dim);
    text-decoration: none;
}