.site-header {
    position: sticky;
    top: 0;
    padding: 10px;
    z-index: 1300;
    backdrop-filter: blur(16px);
    background: rgba(0, 89, 255, 0.92);
    border-bottom: 1px solid rgba(255, 255, 255, 0.466);
}

.header-shell {
    width: var(--container);
    margin: 0 auto;
    min-height: 88px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
    min-width: 0;
}

.brand img {
    width: 160px;
    height: 160px;
    object-fit: contain;
}

.brand-copy {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.brand-kicker {
    color: #e0eaf8;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.logo {
    font-family: 'Poppins', sans-serif;
    font-size: 1.15rem;
    color: var(--white);
    white-space: nowrap;
}

.desktop-menu ul {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 24px;
}

.desktop-menu a {
    text-decoration: none;
    color: #e0eaf8;
    font-weight: 600;
    position: relative;
}

.desktop-menu a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -8px;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #93c5fd 0%, #60a5fa 100%);
    transition: width var(--transition);
}

.desktop-menu a:hover::after,
.desktop-menu a:focus-visible::after {
    width: 100%;
}

.desktop-menu a:hover {
    color: var(--white);
}

.header-cta {
    white-space: nowrap;
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    color: var(--white);
    box-shadow: 0 20px 48px rgba(34, 197, 94, 0.34);
}

.menu-toggle {
    display: none;
    width: 52px;
    height: 52px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(255, 255, 255, 0.08);
    color: var(--white);
    font-size: 1.8rem;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.menu-backdrop {
    display: none;
}

.menu-backdrop.is-visible {
    opacity: 1;
    visibility: visible;
}

#mobile-menu {
    display: none;
}

#mobile-menu.is-open {
    right: 0;
}

.close-menu {
    align-self: flex-end;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.06);
    color: #fca5a5;
    font-size: 1.6rem;
}

#mobile-menu ul {
    list-style: none;
    display: grid;
    gap: 18px;
    margin: 32px 0 36px;
}

#mobile-menu a {
    text-decoration: none;
    color: var(--white);
    font-size: 1.05rem;
    font-weight: 600;
}

.mobile-menu-footer {
    margin-top: auto;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: grid;
    gap: 18px;
}

.mobile-menu-footer img {
    width: 180px;
    justify-self: center;
}

.mobile-menu-footer p {
    color: #cbd5e1;
    text-align: center;
}