/* ============ Footer ============ */
#site-footer {
    position: relative;
    width: 100%;
    padding-top: var(--nav-h);
    color: #fff;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background:
        radial-gradient(1100px 520px at 88% -12%, rgba(26, 86, 219, 0.20), transparent 60%),
        radial-gradient(900px 480px at -8% 112%, rgba(26, 86, 219, 0.14), transparent 58%),
        linear-gradient(158deg, #091426 0%, #0d1b2a 48%, #0f1f33 100%);
}

#site-footer::before {
    content: '';
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent 0%, #1A56DB 28%, #5b9cff 50%, #1A56DB 72%, transparent 100%);
    z-index: 1;
}

#site-footer::after {
    content: 'KEXIANQIANG';
    position: absolute;
    right: -30px;
    bottom: 30px;
    font-size: 128px;
    font-weight: 800;
    letter-spacing: 12px;
    line-height: 1;
    color: rgba(255, 255, 255, 0.028);
    pointer-events: none;
    white-space: nowrap;
    z-index: 0;
}

#site-footer .footer-cta {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 34px 56px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

#site-footer .cta-text h2 {
    font-size: 26px;
    font-weight: 700;
    letter-spacing: 1px;
    color: #fff;
}

#site-footer .cta-text h2 span {
    color: #5b9cff;
}

#site-footer .cta-text p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 10px;
    letter-spacing: 1px;
}

#site-footer .cta-btn {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 34px;
    border: none;
    background: linear-gradient(135deg, #1A56DB, #3d7bfd);
    color: #fff;
    font-size: 14px;
    letter-spacing: 2px;
    border-radius: 999px;
    text-decoration: none;
    box-shadow: 0 8px 24px rgba(26, 86, 219, 0.35);
    transition: all 0.3s;
}

#site-footer .cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(26, 86, 219, 0.5);
}

#site-footer .footer-inner {
    position: relative;
    z-index: 1;
    flex: 1;
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 44px 56px 38px;
    display: flex;
    align-items: center;
}

#site-footer .footer-brand {
    flex: 1.05;
    min-width: 300px;
    padding-right: 64px;
    border-right: 1px solid rgba(255, 255, 255, 0.10);
}

#site-footer .brand-top {
    display: flex;
    align-items: center;
    gap: 18px;
    margin-bottom: 22px;
}

#site-footer .footer-logo {
    height: 48px;
    width: auto;
    object-fit: contain;
    display: block;
    background: #fff;
    padding: 8px 16px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    flex-shrink: 0;
}

#site-footer .brand-name h2 {
    font-size: 26px;
    font-weight: 700;
    letter-spacing: 2px;
    color: #fff;
    line-height: 1.2;
    white-space: nowrap;
}

#site-footer .brand-name .brand-slogan {
    font-size: 13px;
    letter-spacing: 2px;
    color: #6ea8ff;
    margin-top: 8px;
}

#site-footer .brand-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.62);
    line-height: 1.9;
    margin-bottom: 22px;
    max-width: 460px;
}

#site-footer .brand-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 26px;
}

#site-footer .brand-tags span {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
    padding: 5px 14px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 999px;
    letter-spacing: 1px;
    transition: all 0.3s;
}

#site-footer .brand-tags span:hover {
    border-color: #3d7bfd;
    color: #6ea8ff;
    background: rgba(26, 86, 219, 0.12);
}

#site-footer .brand-contact {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px 26px;
}

#site-footer .brand-contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.76);
    line-height: 1.6;
}

#site-footer .brand-contact li svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-top: 1px;
    fill: #5b9cff;
}

#site-footer .brand-contact li strong {
    color: #fff;
    font-weight: 600;
}

#site-footer .footer-cols {
    flex: 1.35;
    padding-left: 64px;
    display: grid;
    grid-template-columns: 1fr 1fr 1.25fr;
    gap: 44px;
}

#site-footer .footer-col h3 {
    position: relative;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 2px;
    color: #fff;
    margin-bottom: 24px;
    padding-bottom: 12px;
}

#site-footer .footer-col h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 26px;
    height: 2px;
    border-radius: 1px;
    background: linear-gradient(90deg, #1A56DB, #5b9cff);
}

#site-footer .footer-col ul {
    list-style: none;
}

#site-footer .footer-col ul li {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 2.5;
}

#site-footer .footer-col ul li a {
    position: relative;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color 0.3s;
}

#site-footer .footer-col ul li a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 1px;
    background: #5b9cff;
    transition: width 0.3s;
}

#site-footer .footer-col ul li a:hover {
    color: #5b9cff;
}

#site-footer .footer-col ul li a:hover::after {
    width: 100%;
}

#site-footer .footer-qr {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

#site-footer .qr-box {
    flex: 0 0 auto;
    text-align: center;
    transition: transform 0.3s;
}

#site-footer .qr-box:hover {
    transform: translateY(-5px);
}

#site-footer .qr-box img {
    width: 88px;
    height: 88px;
    object-fit: contain;
    border-radius: 12px;
    display: block;
    margin-bottom: 10px;
    background: #fff;
    padding: 6px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.38);
}

#site-footer .qr-box span {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 1px;
}

#site-footer .footer-bottom {
    position: relative;
    z-index: 1;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 56px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 1px;
}

#site-footer .footer-bottom > span {
    white-space: nowrap;
}

#site-footer .footer-bottom-right {
    display: flex;
    align-items: center;
    gap: 22px;
}

#site-footer .footer-bottom a {
    color: rgba(255, 255, 255, 0.4);
    text-decoration: none;
    transition: color 0.3s;
}

#site-footer .footer-bottom a:hover {
    color: #fff;
}

@media (max-width: 900px) {
    #site-footer::after {
        display: none;
    }

    #site-footer .footer-cta {
        flex-direction: column;
        align-items: flex-start;
        padding: 32px 24px 28px;
        gap: 20px;
    }

    #site-footer .footer-inner {
        flex-direction: column;
        align-items: stretch;
        padding: 40px 24px 32px;
    }

    #site-footer .footer-brand {
        min-width: 0;
        padding-right: 0;
        border-right: none;
    }

    #site-footer .brand-top {
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
    }

    #site-footer .brand-name h2 {
        font-size: 22px;
    }

    #site-footer .brand-contact {
        grid-template-columns: 1fr;
    }

    #site-footer .footer-cols {
        padding-left: 0;
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }

    #site-footer .footer-bottom {
        flex-direction: column;
        text-align: center;
        padding: 16px 20px;
    }

    #site-footer .footer-bottom-right {
        flex-wrap: wrap;
        justify-content: center;
    }
}