#main-container {
    position: sticky;
    top: 0;
    z-index: 30;
}

#main-content {
    padding-top: 6.4rem;
}

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1000;
    background: rgba(6, 17, 31, 0.76);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(157, 183, 214, 0.08);
    box-shadow: 0 18px 40px rgba(2, 10, 23, 0.12);
    transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition);
}

.header-shell {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-5);
    padding-block: 1rem;
}

.brand-link {
    display: inline-flex;
    align-items: center;
    gap: 0.95rem;
    min-width: 0;
}

.brand-logo {
    width: 54px;
    height: 54px;
    object-fit: contain;
}

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

.brand-title {
    color: var(--color-text-strong);
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.brand-subtitle {
    color: var(--color-text-muted);
    font-size: 0.84rem;
    max-width: 15rem;
    white-space: normal;
}

#nav-menu {
    margin-left: auto;
    position: relative;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    list-style: none;
}

.nav-links li {
    position: relative;
}

.nav-links a,
.nav-links button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.8rem;
    padding: 0.72rem 1rem;
    border-radius: var(--radius-pill);
    border: 0;
    background: transparent;
    color: var(--color-text-soft);
    font: inherit;
    font-size: 0.97rem;
    font-weight: 500;
    white-space: nowrap;
    transition: color var(--transition), background-color var(--transition), border-color var(--transition), transform var(--transition);
}

.nav-links a:hover,
.nav-links a[aria-current="page"],
.nav-links button:hover,
.dropdown-toggle.is-current,
.dropdown.active > .dropdown-toggle {
    color: var(--color-text-strong);
    background: rgba(255, 255, 255, 0.04);
}

.dropdown-toggle::after {
    content: '▾';
    margin-left: 0.45rem;
    font-size: 0.75rem;
    color: var(--color-accent);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 0.85rem);
    left: 0;
    display: none;
    min-width: 18rem;
    padding: 0.6rem;
    list-style: none;
    background: rgba(9, 22, 37, 0.98);
    border: 1px solid var(--color-border);
    border-radius: 1.25rem;
    box-shadow: var(--shadow-md);
}

.dropdown.active .dropdown-menu {
    display: block;
}

.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -0.45rem;
    left: 1.5rem;
    width: 0.9rem;
    height: 0.9rem;
    background: inherit;
    border-top: 1px solid var(--color-border);
    border-left: 1px solid var(--color-border);
    transform: rotate(45deg);
}

.dropdown-menu li a {
    width: 100%;
    justify-content: flex-start;
    padding: 0.85rem 1rem;
    border-radius: var(--radius-sm);
    color: var(--color-text);
}

.dropdown-menu li a:hover,
.dropdown-menu li a[aria-current="page"] {
    background: rgba(61, 217, 235, 0.1);
    color: var(--color-text-strong);
}

.nav-cta-item {
    margin-left: 0.35rem;
}

.header-cta {
    color: #04131f;
    flex-shrink: 0;
    white-space: nowrap;
    background: var(--gradient-accent);
    box-shadow: 0 14px 30px rgba(21, 184, 207, 0.22);
}

.header-cta:hover {
    transform: translateY(-1px);
    color: #04131f;
    background: linear-gradient(135deg, #5ce5f2 0%, #20c7da 100%);
}

.hamburger {
    display: none;
    width: 3rem;
    height: 3rem;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.02);
    color: var(--color-text-strong);
    font-size: 1.65rem;
    line-height: 1;
}

.footer {
    margin-top: var(--space-9);
    padding: var(--space-8) 0 var(--space-5);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.01), rgba(255, 255, 255, 0)),
        rgba(6, 17, 31, 0.96);
    border-top: 1px solid rgba(157, 183, 214, 0.08);
}

.footer-container {
    width: min(100% - 2rem, var(--container-max));
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.3fr 1fr 1fr 1fr;
    gap: var(--space-6);
    align-items: start;
}

.footer-brand-link {
    display: inline-flex;
    align-items: center;
    gap: 0.9rem;
    margin-bottom: 1rem;
    color: var(--color-text-strong);
    font-family: var(--font-heading);
    font-size: 1.05rem;
}

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

.footer-brand p,
.footer-note {
    max-width: 32rem;
    color: var(--color-text-muted);
}

.footer-column h2 {
    margin-bottom: 1rem;
    font-size: 1rem;
}

.footer-links {
    display: grid;
    gap: 0.8rem;
}

.footer-links a,
.footer-socials a {
    color: var(--color-text-muted);
    transition: color var(--transition), transform var(--transition);
}

.footer-links a:hover,
.footer-socials a:hover {
    color: var(--color-text-strong);
    transform: translateX(3px);
}

.footer-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 1.35rem;
    min-height: 2.9rem;
    padding: 0.8rem 1.15rem;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-pill);
    color: var(--color-text-strong);
    font-weight: 600;
    background: rgba(61, 217, 235, 0.08);
}

.footer-socials {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    margin-top: 1.2rem;
}

.footer-socials a {
    padding: 0.6rem 0.9rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    background: rgba(255, 255, 255, 0.02);
}

.footer-bottom {
    width: min(100% - 2rem, var(--container-max));
    margin: var(--space-7) auto 0;
    padding-top: var(--space-5);
    display: flex;
    justify-content: space-between;
    gap: var(--space-4);
    border-top: 1px solid rgba(157, 183, 214, 0.08);
}

.footer-bottom p {
    color: rgba(185, 202, 220, 0.72);
    font-size: 0.92rem;
}

@media (min-width: 1025px) {
    .dropdown:hover .dropdown-menu {
        display: block;
    }

    .dropdown:focus-within .dropdown-menu {
        display: block;
    }
}

@media (max-width: 1180px) {
    .brand-subtitle {
        display: none;
    }

    .nav-links a {
        padding-inline: 0.82rem;
        font-size: 0.94rem;
    }

    .header-cta {
        padding-inline: 1rem;
    }

    .footer-container {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .footer-bottom {
        flex-direction: column;
    }
}

@media (max-width: 1024px) {
    #main-content {
        padding-top: 5.8rem;
    }

    .header-shell {
        gap: var(--space-3);
        padding-block: 0.85rem;
    }

    .hamburger {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        margin-left: auto;
        position: relative;
        z-index: 2000;
    }

    .nav-links {
        position: fixed;
        top: 5.8rem;
        left: 1rem;
        right: 1rem;
        z-index: 1500;
        flex-direction: column;
        align-items: stretch;
        gap: 0.4rem;
        max-height: calc(100dvh - 7rem);
        overflow: hidden;
        padding: 0;
        pointer-events: none;
        opacity: 0;
        transform: translateY(-8px);
        background: rgba(8, 20, 35, 0.98);
        border: 1px solid var(--color-border);
        border-radius: 1.5rem;
        box-shadow: var(--shadow-md);
        transition: opacity var(--transition), transform var(--transition), max-height var(--transition), padding var(--transition);
    }

    .nav-links.show {
        max-height: calc(100dvh - 7rem);
        overflow-y: auto;
        overflow-x: hidden;
        padding: 0.75rem;
        pointer-events: auto;
        opacity: 1;
        transform: translateY(0);
        overscroll-behavior: contain;
        -webkit-overflow-scrolling: touch;
    }

    .nav-links li,
    .nav-links a,
    .nav-cta-item {
        width: 100%;
    }

    .nav-links a {
        justify-content: flex-start;
        min-height: 3rem;
        padding-inline: 1rem;
    }

    .dropdown-menu {
        position: static;
        min-width: 0;
        padding: 0.45rem;
        margin-top: 0.3rem;
        border-radius: 1rem;
        background: rgba(255, 255, 255, 0.03);
        box-shadow: none;
    }

    .dropdown-menu::before {
        display: none;
    }

    .dropdown:hover .dropdown-menu {
        display: none;
    }

    .dropdown.active .dropdown-menu {
        display: block;
    }

    .dropdown-menu li a {
        padding-left: 1rem;
    }

    .nav-cta-item {
        margin-left: 0;
        margin-top: 0.25rem;
    }

    .header-cta {
        width: 100%;
    }

    .footer {
        margin-top: var(--space-8);
        padding-top: var(--space-7);
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: var(--space-5);
    }
}