.site-footer {
        background: #f8fafc;
        padding: 100px 0 80px;
        font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        border-top: 1px solid #e2e8f0;
    }

    .site-footer__inner {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 48px;
    }

    .site-footer__grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 64px;
    }

    .site-footer__col {
        text-align: left;
    }

    .site-footer__title {
        font-size: 12px;
        font-weight: 600;
        color: #1e4fb5;
        margin: 0 0 32px 0;
        padding-left: 16px;
        letter-spacing: 2px;
        text-transform: uppercase;
        position: relative;
    }

    .site-footer__title::before {
        content: '';
        position: absolute;
        left: 0;
        top: 50%;
        transform: translateY(-50%);
        width: 3px;
        height: 16px;
        background: linear-gradient(180deg, #1e4fb5 0%, #3b82f6 100%);
        border-radius: 2px;
    }

    .site-footer__links {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .site-footer__links li {
        margin-bottom: 14px;
        position: relative;
        padding-left: 12px;
    }

    .site-footer__links li::before {
        content: '';
        position: absolute;
        left: 0;
        top: 50%;
        transform: translateY(-50%);
        width: 4px;
        height: 4px;
        background: #cbd5e1;
        border-radius: 50%;
        transition: all 0.25s ease;
    }

    .site-footer__links a {
        color: #64748b;
        text-decoration: none;
        font-size: 14px;
        font-weight: 400;
        transition: all 0.25s ease;
        display: inline-block;
    }

    .site-footer__links li:hover::before {
        background: #1e4fb5;
        transform: translateY(-50%) scale(1.5);
    }

    .site-footer__links li:hover a {
        color: #1e4fb5;
        transform: translateX(4px);
    }

    .site-footer__contact {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .site-footer__contact li {
        margin-bottom: 16px;
        color: #64748b;
        font-size: 14px;
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .site-footer__contact a {
        color: #64748b;
        text-decoration: none;
        transition: color 0.25s ease;
    }

    .site-footer__contact a:hover {
        color: #1e4fb5;
    }

    .site-footer__contact img {
        width: 15px;
        height: 15px;
        vertical-align: middle;
        flex-shrink: 0;
        opacity: 0.5;
    }

    .site-footer__social {
        display: flex;
        gap: 18px;
        margin-top: 8px;
    }

    .site-footer__social a {
        display: inline-block;
        transition: all 0.25s ease;
        opacity: 0.45;
    }

    .site-footer__social a:hover {
        opacity: 1;
        transform: translateY(-2px);
    }

    .site-footer__social img {
        width: 26px;
        height: 26px;
    }

    .site-footer__divider {
        height: 1px;
        background: #e2e8f0;
        margin: 80px 0 40px;
    }

    .site-footer__bottom {
        text-align: center;
        color: #94a3b8;
        font-size: 13px;
        letter-spacing: 0.3px;
    }

    /* ─── Back to Top Button ──────────────────────────────── */
    .back-to-top {
        position: fixed;
        bottom: 142px;
        right: 31px;
        width: 44px;
        height: 44px;
        background: var(--brand, #1e4fb5);
        color: #fff;
        border: none;
        border-radius: 8px;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        opacity: 0;
        visibility: hidden;
        transform: translateY(12px);
        transition: opacity 300ms ease, visibility 300ms ease, transform 300ms ease, background 200ms ease;
        box-shadow: 0 4px 12px rgba(30, 79, 181, 0.25);
        z-index: 998;
    }
    .back-to-top.visible {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    .back-to-top:hover {
        background: #1640a0;
        box-shadow: 0 6px 16px rgba(30, 79, 181, 0.35);
    }
    .back-to-top svg {
        width: 20px;
        height: 20px;
    }

    /* ─── WhatsApp Button ─────────────────────────────────── */
    .whatsapp-float {
        position: fixed;
        bottom: 88px;
        right: 33px;
        width: 43px;
        z-index: 998;
        transition: transform 200ms ease, opacity 200ms ease;
    }
    .whatsapp-float:hover {
        transform: scale(1.1);
    }
    .whatsapp-float img {
        width: 100%;
        display: block;
        border-radius: 8px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    }