/* Responsive */
@media (max-width: 1440px) {
  .brand__subtitle {
    display: none;
  }
}

@media (max-width: 1320px) {
  .site-nav,
  .header-actions {
    display: none !important;
    visibility: hidden;
    pointer-events: none;
  }

  .burger {
    display: flex;
  }

  .header-wrap {
    min-height: 82px;
  }

  .brand {
    max-width: calc(100% - 70px);
  }

  .site-header {
    background: rgba(9, 11, 18, 0.92);
  }
}

@media (max-width: 1200px) {
  .hero-grid,
  .audience-grid,
  .contact-grid,
  .cta-block {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 560px;
  }

  .hero-panel--back {
    right: 60px;
  }

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

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

  .interface-grid {
    grid-template-columns: 1fr;
  }

  .interface-card--wide {
    grid-column: auto;
  }

  .app-shell,
  .detail-split {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .section,
  .section--bottom {
    padding: 40px 0 72px;
  }

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

  .hero {
    padding-top: 32px;
  }

  .hero-grid,
  .value-grid,
  .feature-grid,
  .timeline,
  .audience-cards,
  .contact-grid,
  .hero-stats,
  .form-grid,
  .overview-grid,
  .hero-mini-grid,
  .cta-block,
  .request-type {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: clamp(34px, 12vw, 52px);
  }

  .hero-text,
  .section-head p,
  .contact-info p,
  .cta-copy p {
    font-size: 16px;
  }

  .hero-visual {
    min-height: auto;
    display: grid;
    gap: 16px;
  }

  .hero-panel {
    position: static;
    width: 100%;
    transform: none;
    padding: 20px;
  }

  .stat-card,
  .value-card,
  .feature-card,
  .timeline-card,
  .audience-card,
  .contact-info,
  .contact-card,
  .cta-block,
  .hero-panel,
  .interface-card {
    border-color: rgba(255, 255, 255, 0.12);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.035));
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
  }

  .value-card,
  .feature-card,
  .timeline-card,
  .audience-card,
  .contact-info,
  .contact-card,
  .cta-block,
  .interface-card {
    padding: 22px;
    border-radius: 24px;
  }

  .footer-wrap,
  .form-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-wrap {
    padding: 18px 0;
  }

  .input-grid,
  .params-grid,
  .summary-board {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .interface-head h3 {
    font-size: 24px;
  }

  .input-grid,
  .params-grid,
  .summary-board {
    grid-template-columns: 1fr;
  }

  .mode-item {
    grid-template-columns: 1fr;
  }

  .metric-box strong,
  .summary-tile strong {
    font-size: 26px;
  }

  .mock-table__head,
  .mock-table__row {
    min-width: 680px;
  }
}

@media (max-width: 560px) {
  .header-wrap {
    min-height: 74px;
    gap: 12px;
  }

  .brand {
    gap: 10px;
    max-width: calc(100% - 58px);
  }

  .brand__subtitle {
    display: none !important;
  }

  .btn,
  .btn--sm,
  .form-footer .btn {
    width: 100%;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .hero-bullets {
    gap: 10px;
  }

  .panel-title,
  .overview-card strong,
  .value-card h3,
  .feature-card h3,
  .timeline-card h3,
  .audience-card h3,
  .contact-point strong {
    font-size: 20px;
  }

  .footer-links {
    gap: 14px;
  }
}

@media (max-width: 480px) {
  .container {
    width: min(calc(100% - 24px), var(--max-width));
  }

  .site-header {
    background: rgba(9, 11, 18, 0.96);
  }

  .header-wrap {
    min-height: 68px;
    gap: 10px;
  }

  .brand {
    gap: 10px;
    max-width: calc(100% - 54px);
  }

  .brand__mark {
    width: 40px;
    height: 40px;
    border-radius: 14px;
    font-size: 20px;
  }

  .brand__title {
    font-size: 17px;
  }

  .burger {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    padding: 0 11px;
  }

  .mobile-menu {
    padding: 0 14px 16px;
  }

  .eyebrow {
    min-height: 32px;
    padding: 0 12px;
    font-size: 12px;
    line-height: 1.3;
    max-width: 100%;
  }

  .hero {
    padding-top: 20px;
  }

  .hero-title {
    font-size: clamp(28px, 9.5vw, 38px);
    line-height: 1.02;
    letter-spacing: -0.045em;
  }

  .hero-text {
    margin-top: 18px;
    font-size: 15px;
    line-height: 1.72;
  }

  .hero-actions {
    margin-top: 24px;
    gap: 12px;
  }

  .hero-bullets {
    margin-top: 22px;
    gap: 10px;
  }

  .hero-bullet {
    gap: 10px;
    font-size: 14px;
    line-height: 1.6;
  }

  .hero-stats {
    margin-top: 24px;
    gap: 12px;
  }

  .stat-card {
    padding: 18px;
    border-radius: 20px;
  }

  .stat-card strong {
    font-size: 22px;
  }

  .stat-card span {
    margin-top: 8px;
    font-size: 14px;
    line-height: 1.5;
  }

  .section,
  .section--bottom {
    padding: 34px 0 60px;
  }

  .section-head {
    margin-bottom: 24px;
  }

  .section-head h2,
  .contact-info h2,
  .cta-copy h2 {
    font-size: clamp(26px, 8vw, 34px);
    line-height: 1.08;
  }

  .section-head p,
  .contact-info p,
  .cta-copy p,
  .value-card p,
  .feature-card p,
  .timeline-card p,
  .audience-card p {
    font-size: 15px;
    line-height: 1.68;
  }

  .stat-card,
  .value-card,
  .feature-card,
  .timeline-card,
  .audience-card,
  .contact-info,
  .contact-card,
  .cta-block,
  .hero-panel,
  .interface-card {
    border-color: rgba(255, 255, 255, 0.13);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.085), rgba(255, 255, 255, 0.04));
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.3);
  }

  .value-card,
  .feature-card,
  .timeline-card,
  .audience-card,
  .contact-info,
  .contact-card,
  .cta-block,
  .interface-card {
    padding: 18px;
    border-radius: 20px;
  }

  .value-card h3,
  .feature-card h3,
  .timeline-card h3,
  .audience-card h3 {
    font-size: 20px;
    line-height: 1.2;
  }

  .contact-point {
    min-height: auto;
    padding: 16px;
    border-radius: 18px;
  }

  .contact-point strong {
    font-size: 18px;
  }

  .form-grid {
    gap: 14px;
  }

  .field input:not([type="radio"]):not([type="checkbox"]),
  .field textarea {
    min-height: 54px;
    border-radius: 16px;
  }

  .field textarea {
    min-height: 140px;
    padding: 16px;
  }

  .request-option {
    min-height: 54px;
    padding: 14px 16px;
    border-radius: 16px;
  }

  .request-option span,
  .checkbox-field span,
  .form-footer p,
  .form-note {
    font-size: 13px;
    line-height: 1.6;
  }

  .interface-head h3 {
    font-size: 22px;
  }

  .interface-tabs {
    gap: 8px;
    margin-bottom: 18px;
  }

  .interface-tab {
    min-height: 40px;
    padding: 0 14px;
    font-size: 13px;
  }

  .surface-panel {
    padding: 16px;
    border-radius: 20px;
  }

  .surface-panel__title {
    margin-bottom: 14px;
    font-size: 15px;
  }

  .input-chip,
  .param-box,
  .metric-box,
  .summary-tile {
    padding: 16px;
    border-radius: 18px;
  }

  .metric-box strong,
  .summary-tile strong {
    font-size: 24px;
  }

  .mock-table {
    border-radius: 18px;
  }

  .cost-line,
  .detail-row {
    min-height: 52px;
    padding: 0 14px;
    border-radius: 16px;
  }

  .mode-item {
    padding: 14px 16px;
    border-radius: 18px;
  }

  .supply-pill {
    min-height: 34px;
    padding: 0 12px;
    font-size: 12px;
  }

  .detail-note {
    padding: 18px;
    border-radius: 20px;
  }

  .footer-wrap {
    gap: 14px;
  }

  .footer-links {
    flex-direction: column;
    gap: 10px;
  }
}

@media (max-width: 390px) {
  .container {
    width: min(calc(100% - 20px), var(--max-width));
  }

  .hero-title {
    font-size: clamp(26px, 9vw, 34px);
    line-height: 1.03;
  }

  .hero-text {
    font-size: 14px;
    line-height: 1.65;
  }

  .btn,
  .btn--sm,
  .form-footer .btn {
    min-height: 52px;
    padding: 0 18px;
    border-radius: 16px;
  }

  .panel-title,
  .overview-card strong,
  .value-card h3,
  .feature-card h3,
  .timeline-card h3,
  .audience-card h3,
  .contact-point strong {
    font-size: 18px;
  }

  .hero-panel,
  .interface-card,
  .contact-info,
  .contact-card,
  .cta-block {
    border-radius: 18px;
  }

  .hero-bullet,
  .stat-card span,
  .section-head p,
  .contact-info p,
  .cta-copy p {
    font-size: 14px;
  }
}