#### 2. Complete `responsive.css` (Mobile Adjustments)
```css
/* =============================================
   DEAF EARTH CO. — RESPONSIVE STYLESHEET
   Mobile-First Breakpoints
============================================= */

/* ============================================
   LARGE DESKTOP — max 1400px
============================================= */
@media (max-width: 87.5em) {
  .hero {
    gap: var(--space-xl);
    padding: 11rem 3.2rem 5rem;
  }
  .products__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================
   LAPTOP — max 1200px
============================================= */
@media (max-width: 75em) {
  html {
    font-size: 58%;
  }
  .nav {
    padding: 1.6rem 3.2rem;
  }
  .hero {
    gap: var(--space-lg);
    padding: 10rem 3.2rem 4rem;
  }
}

/* ============================================
   SMALL LAPTOP / LARGE TABLET — max 1024px
============================================= */
@media (max-width: 64em) {
  html {
    font-size: 55%;
  }
  .about {
    gap: var(--space-xl);
    padding: var(--space-xl) 3.2rem;
  }
  .products__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .testimonials__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================
   TABLET — max 768px
============================================= */
@media (max-width: 48em) {
  html {
    font-size: 52%;
  }

  .nav {
    padding: 1.4rem 2.4rem;
    position: relative;
  }
  .nav__hamburger {
    display: flex;
    z-index: 200;
  }

  .nav__list {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: 28rem;
    background-color: var(--color-soil);
    flex-direction: column;
    align-items: flex-start;
    padding: 10rem var(--space-xl) var(--space-xl);
    gap: var(--space-sm);
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    z-index: 150;
    border-left: 1px solid var(--color-soil-lt);
  }

  .nav__toggle:checked ~ .nav__list {
    transform: translateX(0);
  }

  .nav__toggle:checked ~ .nav__hamburger .nav__bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .nav__toggle:checked ~ .nav__hamburger .nav__bar:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
  }
  .nav__toggle:checked ~ .nav__hamburger .nav__bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .nav__link {
    font-size: 1.8rem;
    width: 100%;
    padding: 1.2rem var(--space-md);
    color: var(--color-cream-dk);
  }

  .nav__link:hover,
  .nav__link:focus-visible {
    color: var(--color-white);
    background-color: rgba(250, 244, 234, 0.05);
  }
  .nav__link--cta {
    margin-left: 0;
    margin-top: var(--space-md);
    text-align: center;
    width: 100%;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 12rem 2.4rem 4rem;
    text-align: center;
  }
  .hero__visual-display {
    display: none;
  }
  .hero__content {
    align-items: center;
  }
  .hero__subtext {
    max-width: 100%;
  }
  .hero__cta-group {
    justify-content: center;
  }
  .hero__asl-cta {
    max-width: 100%;
  }

  .about {
    grid-template-columns: 1fr;
    padding: var(--space-xl) 2.4rem;
    text-align: center;
  }
  .about__image-frame {
    max-height: 36rem;
  }
  .about__badge {
    bottom: -1.6rem;
    right: 50%;
    transform: translateX(50%);
  }
  .about__content {
    align-items: center;
  }

  .products {
    padding: var(--space-xl) 2.4rem;
  }
  .products__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

  .consult {
    padding: var(--space-xl) 2.4rem;
  }
  .consult__inner {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  .consult__phone-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .testimonials {
    padding: var(--space-xl) 2.4rem;
  }
  .testimonials__grid {
    grid-template-columns: 1fr;
  }

  .trust-bar {
    padding: var(--space-md) 2.4rem;
  }
  .trust-bar__inner {
    gap: var(--space-lg);
  }
  .trust-bar__divider {
    display: none;
  }
}

/* ============================================
   PHONE — max 480px
============================================= */
@media (max-width: 30em) {
  html {
    font-size: 50%;
  }
  .nav {
    padding: 1.2rem 2rem;
  }
  .hero {
    padding: 10rem 2rem 3rem;
  }
  .hero__heading {
    font-size: 4.4rem;
  }
  .hero__cta-group {
    flex-direction: column;
    width: 100%;
  }
  .hero__cta-group .btn {
    width: 100%;
    justify-content: center;
  }
  .products__grid {
    grid-template-columns: 1fr;
  }
  .trust-bar__inner {
    flex-direction: column;
    gap: var(--space-md);
    align-items: flex-start;
  }
}

/* ============================================
   REDUCED MOTION
============================================= */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .hero__scroll-hint,
  .hero__asl-badge {
    animation: none !important;
    transform: none !important;
  }
}

/* ============================================
   HIGH CONTRAST MODE
============================================= */
@media (prefers-contrast: high) {
  .product-card,
  .testimonial-card,
  .hero__asl-cta {
    border-width: 2px;
    border-color: currentColor;
  }
}

/* =============================================
   DEAF EARTH CO. — MOBILE FIXES
   Benaiah Website Services
============================================= */
@media (max-width: 48em) {

  /* 1. Nav menu — full width, not half */
  .nav__list {
    width: 100% !important;
    align-items: center;
    gap: var(--space-lg) !important;
  }
  .nav__link {
    text-align: center;
    font-size: 3.2rem !important;
  }
  .nav__link--cta {
    margin-top: 0 !important;
  }

  /* 2 & 3. Trust bar — center items, increase font */
  .trust-bar__inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-md);
  }
  .trust-bar__item {
    justify-content: center;
    font-size: 18px !important;
  }

  /* 4. Remove excess space below about section */
  .about {
    padding-bottom: var(--space-lg);
  }

  /* 4. Reduce space between about CTA and products */
  .products {
    padding-top: var(--space-lg);
  }

  /* 5. Product filter tabs — wrap & center properly */
  .products__tabs {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
  }
  .tab__label {
    font-size: 2rem;
    padding: 1rem 2rem;
    flex: 0 0 calc(50% - var(--space-sm));
    text-align: center;
  }

  /* 6. Reduce space between products & deaf-first */
  .deaf-first {
    padding-top: var(--space-lg);
  }

  /* 7. Deaf-first cards — stack vertically one column */
  .deaf-first__grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  /* 8. Testimonials — center stars */
  .testimonial-card__rating {
    display: flex;
    justify-content: center;
  }

  /* 9. Consultation submit button — center */
  .consult__form [type="submit"] {
    display: block;
    width: 100%;
    text-align: center;
  }

  /* 10. Footer columns — stack into single column, centered */
  .footer__inner {
    grid-template-columns: 1fr !important;
    text-align: center;
  }
  .footer__brand {
    align-items: center;
  }
  .footer__logo {
    justify-content: center;
  }
  .footer__list {
    padding-left: 0;
    list-style: none;
  }
  .footer__contact-item {
    justify-content: center;
  }
  .footer__bottom-inner {
    flex-direction: column;
    text-align: center;
    gap: var(--space-sm);
  }
}

@media (max-width: 30em) {
  /* Trust bar — left align on very small screens for readability */
  .trust-bar__item {
    font-size: 1.6rem;
  }

  /* Deaf-first cards — full padding */
  .deaf-first {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}

/* Footer logo — increase size on mobile */
@media (max-width: 48em) {
  .footer__logo-mark {
    height: 80px;
    width: auto;
  }
}