@media (max-width: 1050px) {
    .hero-grid,
    .tech-band-inner,
    .ecosystem-layout,
    .footer-grid,
    .simple-grid {
        grid-template-columns: 1fr;
    }

    .intro-grid,
    .premium-grid,
    .plan-grid-modern,
    .ecosystem-modules,
    .process-grid,
    .roadmap-grid,
    .four-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .featured-plan {
        transform: none;
    }

    .ecosystem-core {
        position: relative;
        top: auto;
    }

    .main-nav {
        position: relative;
    }

    .nav-menu {
        position: absolute;
        top: calc(100% + 12px);
        left: 16px;
        right: 16px;
        display: none;
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
        padding: 18px;
        border-radius: 22px;
        background: var(--bg-surface-strong);
        border: 1px solid var(--border-soft);
        box-shadow: var(--shadow-card);
        z-index: 999;
    }

    .nav-menu.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: inline-grid;
        place-items: center;
    }

    .nav-actions {
        gap: 10px;
    }

    .hero-panel {
        max-width: 720px;
    }
}

@media (max-width: 760px) {
    .top-bar-inner,
    .nav-inner,
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }

    .top-bar-inner {
        gap: 10px;
    }

    .top-info {
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: 8px;
    }

    .nav-inner {
        gap: 14px;
    }

    .nav-actions {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: 10px;
    }

    .nav-actions .btn,
    .theme-toggle {
        width: auto;
    }

    .intro-grid,
    .premium-grid,
    .trust-row,
    .system-map,
    .ecosystem-modules,
    .plan-grid-modern,
    .simple-grid,
    .process-grid,
    .roadmap-grid,
    .four-grid,
    .form-grid {
        grid-template-columns: 1fr;
    }

    .hero-premium {
        padding: 78px 0 60px;
        min-height: auto;
    }

    .hero-content h1 {
        font-size: clamp(2rem, 9vw, 3.2rem);
        line-height: 1.08;
    }

    .hero-lead,
    .hero-english {
        font-size: 1rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-logo-card img {
        width: 115px;
        height: 115px;
    }

    .flow-node {
        grid-template-columns: 1fr;
    }

    .flow-node span {
        margin-bottom: 8px;
    }

    .page-hero {
        padding: 64px 0 38px;
    }

    .page-hero h1 {
        font-size: clamp(2rem, 8vw, 3rem);
    }

    .footer-grid {
        gap: 28px;
    }

    .footer-bottom {
        gap: 10px;
        text-align: left;
    }

    .full-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        width: min(100% - 28px, var(--container));
    }

    .top-bar {
        font-size: 0.8rem;
    }

    .brand {
        gap: 10px;
    }

    .brand-logo img,
    .brand-mark img {
        width: 42px;
        height: 42px;
    }

    .brand-text strong {
        font-size: 0.95rem;
    }

    .brand-text small {
        font-size: 0.72rem;
    }

    .mobile-menu-btn {
        width: 42px;
        height: 42px;
    }

    .hero-premium {
        padding: 64px 0 48px;
    }

    .hero-badge,
    .section-tag {
        font-size: 0.78rem;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-panel,
    .intro-card,
    .premium-card,
    .process-card,
    .roadmap-card,
    .plan-card-modern,
    .form-card {
        border-radius: 20px;
    }

    .trust-row {
        gap: 12px;
    }

    .trust-row div {
        padding: 14px;
    }

    .system-map {
        gap: 12px;
    }

    .map-item {
        padding: 14px;
    }

    .section {
        padding: 56px 0;
    }

    .section-head h2 {
        font-size: 1.75rem;
    }

    .footer-brand {
        align-items: flex-start;
    }
}