:root {
    --brand-dark: #1c1c1c;
    --brand-light: #ffffff;
    --brand-grey: #f4f4f4;
    --nav-font: 'Lato', Arial, sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--nav-font);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

button {
    font: inherit;
    background: none;
    border: 0;
    cursor: pointer;
}

/* ---------- Utility bar ---------- */
.chamber-utility-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 4%;
    background: var(--brand-light);
}

.chamber-utility-bar__logo img {
    height: 56px;
    width: auto;
    display: block;
}

.chamber-utility-bar__right {
    display: flex;
    align-items: center;
    gap: 24px;
}

.chamber-utility-nav {
    display: flex;
    align-items: center;
    gap: 18px;
    font-size: 11px;
    letter-spacing: .04em;
    text-transform: uppercase;
}

    .chamber-utility-nav a {
        color: var(--brand-dark);
        transition: color .2s ease;
    }

        .chamber-utility-nav a:hover {
            color: #e63329;
        }

.chamber-utility-nav__login {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 11px 23px;
    line-height: 16px;
    font-size: 13px;
    border: 1px solid #e63329;
    border-radius: 8px;
    color: #fff !important;
    background-color: #e63329;
}

    .chamber-utility-nav__login:hover {
        background: #fff;
        color: #e63329 !important;
    }

.chamber-menu-trigger {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid #004587;
    color: #004587;
    font-size: 16px;
}

    .chamber-menu-trigger:hover {
        background: #004587;
        color: #fff;
    }

/* mobile utility nav toggle */
.chamber-utility-toggle {
    display: none;
}

@media (max-width:900px) {
    .chamber-utility-nav {
        display: none;
    }

    .chamber-utility-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 38px;
        height: 38px;
        font-size: 18px;
        color: var(--brand-dark);
    }
}

/* ---------- Flyout / mega nav overlay ---------- */
.chamber-flyout {
    position: fixed;
    inset: 0;
    background: #e63329;
    color: var(--brand-light);
    padding: 45px 30px;
    overflow-y: auto;
    display: none;
    z-index: 9999;
}

    .chamber-flyout.is-open {
        display: block;
    }

.chamber-flyout__top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
    max-width: 1400px;
    margin: 0 auto 30px;
}

.chamber-flyout__logo img {
    height: 52px;
    width: auto;
}

.chamber-flyout__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid var(--brand-light);
    color: var(--brand-light);
    font-size: 16px;
}

    .chamber-flyout__close:hover {
        background: rgba(255,255,255,.15);
    }

.chamber-flyout__ctas {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

    .chamber-flyout__ctas a {
        padding: 10px 20px;
        border: 1px solid var(--brand-light);
        border-radius: 2px;
        font-size: 13px;
        letter-spacing: .03em;
        text-transform: uppercase;
        transition: .2s ease;
    }

        .chamber-flyout__ctas a:hover {
            background: var(--brand-light);
            color: #e63329;
        }

.chamber-mega-nav {
    max-width: 1400px;
    margin: 0 auto;
}

.chamber-mega-nav__item {
    border-bottom: 1px solid rgba(255,255,255,.2);
}

.chamber-mega-nav__link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 4px;
    font-size: 18px;
    text-transform: capitalize;
}

    .chamber-mega-nav__link:hover {
        opacity: .8;
    }

.chamber-mega-nav__caret {
    transition: transform .25s ease;
    font-size: 13px;
}

.chamber-mega-nav__item.is-open .chamber-mega-nav__caret {
    transform: rotate(180deg);
}

.chamber-mega-nav__sub {
    list-style: none;
    margin: 0;
    padding: 0 0 16px 4px;
    display: none;
}

.chamber-mega-nav__item.is-open .chamber-mega-nav__sub {
    display: block;
}

.chamber-mega-nav__sub li a {
    display: block;
    padding: 8px 0;
    font-size: 14px;
    opacity: .85;
}

    .chamber-mega-nav__sub li a:hover {
        opacity: 1;
        text-decoration: underline;
    }

/* nested (grandchild) submenu, e.g. Business Support > Public Sector */
.chamber-mega-nav__subnested {
    list-style: none;
    margin: 6px 0 6px 16px;
    padding-left: 12px;
    border-left: 1px solid rgba(255,255,255,.3);
    display: none;
}

.chamber-mega-nav__subitem.is-open .chamber-mega-nav__subnested {
    display: block;
}

.chamber-mega-nav__subitem > a {
    display: flex;
    justify-content: space-between;
    align-items: center;
}