@media (max-width: 719px) {
  .container {
    width: 94%;
  }

  .site-header {
    position: sticky;
    top: 0;
    z-index: 120;
    background: var(--header-bg);
  }

  .header-wrap {
    position: relative;
    min-height: auto;
    padding: 14px 0;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
  }

  .brand img {
    width: 172px;
  }

  .menu-toggle {
    width: 42px;
    height: 42px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    padding: 0 10px;
    cursor: pointer;
  }

  .menu-toggle span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--color-text);
    transition: var(--transition);
  }

  .main-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    gap: 10px;
    padding: 12px 14px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.14);
    z-index: 150;
  }

  .nav-link {
    padding: 10px 2px;
    border-bottom: 1px solid var(--color-border);
  }

  .site-header.menu-open .main-nav {
    display: flex;
  }

  .site-header.menu-open .menu-toggle span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .site-header.menu-open .menu-toggle span:nth-child(2) {
    opacity: 0;
  }

  .site-header.menu-open .menu-toggle span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .header-wrap > .btn {
    display: none;
  }

  .hero {
    min-height: 520px;
  }

  .hero-content {
    padding: 28px 0;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
    text-align: center;
  }

  .services,
  .projects,
  .contact {
    padding: 52px 0;
  }

  .service-grid,
  .benefits-grid,
  .project-grid,
  .contact-grid,
  .footer-grid,
  .row {
    grid-template-columns: 1fr;
  }

  .benefits-grid article {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 16px;
  }

  .benefits-grid article:last-child {
    border-bottom: none;
  }

  .project-grid img {
    height: 190px;
  }

  .cta-wrap {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-wrap .btn {
    width: 100%;
    text-align: center;
  }

  .projects h2,
  .contact h2 {
    font-size: 2.1rem;
  }

  .site-footer {
    padding-top: 26px;
  }
}