body {
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1000;
        height: var(--header-height);
        color: var(--white);
        background: rgba(2, 7, 19, 0.96);
        border-bottom: 1px solid var(--border-dark);
        backdrop-filter: blur(18px);
        transition: background var(--transition), box-shadow var(--transition);
    }

        .site-header.is-scrolled {
            background: rgba(2, 7, 19, 0.99);
            box-shadow: 0 14px 38px rgba(0, 0, 0, 0.32);
        }

    .header-container {
        height: 100%;
        display: flex;
        align-items: center;
        gap: 30px;
    }

    .brand {
        position: relative;
        z-index: 1002;
        display: flex;
        align-items: center;
        gap: 13px;
        flex: 0 0 auto;
    }

    .brand-symbol {
        width: 47px;
        height: 47px;
        object-fit: contain;
    }

    .brand-copy {
        display: flex;
        flex-direction: column;
        line-height: 1.1;
    }

        .brand-copy strong {
            font-size: 1.05rem;
            letter-spacing: 0.04em;
        }

        .brand-copy small {
            margin-top: 5px;
            color: rgba(255, 255, 255, 0.57);
            font-size: 0.51rem;
            font-weight: 700;
            letter-spacing: 0.08em;
        }

    .main-navigation {
        flex: 1;
        display: flex;
        align-items: center;
        justify-content: flex-end;
        gap: 25px;
    }

    .navigation-list {
        display: flex;
        align-items: center;
        gap: 24px;
        margin: 0;
        padding: 0;
        list-style: none;
    }

        .navigation-list a {
            position: relative;
            display: block;
            padding: 31px 0 27px;
            color: rgba(255, 255, 255, 0.74);
            font-size: 0.73rem;
            font-weight: 750;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            transition: color var(--transition);
        }

            .navigation-list a::after {
                content: "";
                position: absolute;
                right: 0;
                bottom: 19px;
                left: 0;
                height: 2px;
                background: linear-gradient( 90deg, var(--brand-blue), var(--brand-accent) );
                transform: scaleX(0);
                transition: transform var(--transition);
            }

            .navigation-list a:hover,
            .navigation-list a.is-active {
                color: var(--white);
            }

                .navigation-list a:hover::after,
                .navigation-list a.is-active::after {
                    transform: scaleX(1);
                }

    .header-actions {
        display: flex;
        align-items: center;
        gap: 9px;
    }

    .header-phone,
    .header-whatsapp {
        min-height: 43px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding-inline: 15px;
        color: var(--white);
        border-radius: var(--radius-small);
        font-size: 0.8rem;
        font-weight: 750;
        transition: transform var(--transition), box-shadow var(--transition);
    }

    .header-phone {
        background: linear-gradient( 135deg, var(--brand-primary), var(--brand-blue) );
    }

    .header-whatsapp {
        background: var(--whatsapp);
    }

        .header-phone:hover,
        .header-whatsapp:hover {
            color: var(--white);
            transform: translateY(-2px);
        }

    .menu-button {
        position: relative;
        z-index: 1002;
        display: none;
        width: 46px;
        height: 46px;
        margin-left: auto;
        padding: 10px;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid var(--border-dark);
        border-radius: 10px;
        cursor: pointer;
    }

        .menu-button span {
            display: block;
            width: 100%;
            height: 2px;
            margin: 5px 0;
            background: var(--white);
            border-radius: 5px;
            transition: transform var(--transition), opacity var(--transition);
        }

        .menu-button.is-open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .menu-button.is-open span:nth-child(2) {
            opacity: 0;
        }

        .menu-button.is-open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

    .site-footer {
        padding-top: 70px;
        color: rgba(255, 255, 255, 0.67);
        background: radial-gradient( circle at 12% 0%, rgba(21, 20, 165, 0.22), transparent 32% ), var(--navy-950);
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.4fr 0.8fr 0.7fr 1fr;
        gap: 58px;
        padding-bottom: 55px;
    }

    .footer-company p {
        max-width: 420px;
        margin: 22px 0 0;
    }

    .footer-brand {
        display: flex;
        align-items: center;
        gap: 13px;
    }

    .footer-symbol {
        width: 48px;
        height: 48px;
        object-fit: contain;
    }

    .footer-brand span {
        display: flex;
        flex-direction: column;
        line-height: 1.1;
    }

    .footer-brand strong {
        color: var(--white);
        letter-spacing: 0.04em;
    }

    .footer-brand small {
        margin-top: 5px;
        font-size: 0.51rem;
        font-weight: 700;
        letter-spacing: 0.08em;
    }

    .footer-column {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

        .footer-column h2 {
            margin: 0 0 9px;
            color: var(--white);
            font-size: 0.84rem;
            letter-spacing: 0.08em;
            text-transform: uppercase;
        }

        .footer-column a {
            transition: color var(--transition);
        }

            .footer-column a:hover {
                color: var(--brand-accent);
            }

    .footer-bottom {
        min-height: 72px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
        border-top: 1px solid var(--border-dark);
        font-size: 0.79rem;
    }
}