@media (max-width: 900px) {
    .hero-inner {
        grid-template-columns: minmax(0, 1fr);
    }

    .hero {
        padding-top: 40px;
    }

    .card-grid,
    .services-grid,
    .process-steps,
    .projects-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .cta-inner {
        align-items: flex-start;
    }

    /* mobile nav */
    .nav-toggle {
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .site-nav {
        position: absolute;
        inset-inline: 0;
        top: 100%;
        margin-top: 8px;
        padding: 10px 16px 14px;
        background: rgba(5, 7, 11, 0.98);
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        display: none;
        flex-direction: column;
        gap: 10px;
        z-index: 15;
    }

    .site-nav.nav-open {
        display: flex;
    }

    .nav-links {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .nav-cta {
        align-self: stretch;
        justify-content: center;
        text-align: center;
    }

    .header-inner {
        position: relative; /* anchor dropdown */
    }

    /* hero logo overlay variant on mobile */
    .hero-logo-column {
        position: absolute;
        top: -10px;
        right: 0;
        opacity: 0.35;
        pointer-events: none;
        z-index: 0;
    }

    .hero-logo-orbit {
        width: 160px;
        height: 160px;
        opacity: 0.6;
    }

    .hero-logo-image {
        width: 70%;
        animation-duration: 1.4s;
    }
}

@media (max-width: 600px) {
    .hero-title {
        font-size: 2rem;
    }

    .container {
        padding: 0 16px;
    }

    .hero-logo-column {
        opacity: 0.25;
    }
}

@media (max-width: 480px) {
    .hero-logo-column {
        display: none;
    }
}