@media (min-width: 680px) {
  .feature-grid,
  .content-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .footer-cta-inner,
  .footer-inner {
    grid-template-columns: 1fr auto;
  }

  .newsletter-panel,
  .form-layout,
  .score-page-layout {
    grid-template-columns: minmax(0, 1fr) minmax(280px, .75fr);
  }
}

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: minmax(0, .95fr) minmax(420px, 1.05fr);
  }

  .split-section,
  .product-detail-layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(320px, .9fr);
  }

  .section-heading.row {
    grid-template-columns: 1fr auto;
  }

  .feature-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .product-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .catalog-layout {
    grid-template-columns: 270px minmax(0, 1fr);
  }

  .score-showcase {
    grid-template-columns: minmax(0, .85fr) minmax(420px, 1fr);
    align-items: center;
  }

  .product-story-inner,
  .product-detail-hero-inner,
  .renew-inner,
  .account-layout {
    grid-template-columns: minmax(0, 1fr) minmax(380px, .9fr);
  }

  .product-story.is-reversed .product-story-copy {
    order: 2;
  }

  .switch-flow article {
    grid-template-columns: minmax(0, .75fr) minmax(0, 1fr);
  }
}

@media (max-width: 899px) {
  .header-actions {
    display: none;
  }

  .site-nav {
    position: fixed;
    inset: 0 0 0 auto;
    z-index: var(--z-overlay);
    width: min(88vw, 360px);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: 96px var(--space-5) var(--space-6);
    background: var(--color-surface);
    box-shadow: var(--shadow-lg);
    transform: translateX(102%);
    transition: transform var(--transition-base);
  }

  .site-nav.is-open {
    transform: translateX(0);
  }

  .site-nav a {
    justify-content: space-between;
    border-radius: var(--radius-md);
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-overlay {
    position: fixed;
    inset: 0;
    z-index: calc(var(--z-overlay) - 1);
    background: rgba(35, 48, 39, .36);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
  }

  .nav-open .nav-overlay {
    opacity: 1;
    pointer-events: auto;
  }

  .product-detail-summary {
    position: static;
  }

  .filter-panel {
    position: static;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 1.25rem, var(--content-width));
  }

  .hero {
    min-height: auto;
    padding: var(--space-10) 0 var(--space-8);
  }

  .hero-visual,
  .feature-card,
  .content-card,
  .card {
    padding: var(--space-5);
  }

  .hero-visual {
    padding: 0;
  }

  .editorial-grid .large,
  .magazine-grid .feature {
    grid-column: auto;
  }

  .swap-card {
    grid-template-columns: 1fr;
  }

  .swap-arrow {
    transform: rotate(90deg);
    width: fit-content;
  }

  .score-panel,
  .newsletter-panel {
    padding: var(--space-5);
  }

  .score-row {
    grid-template-columns: 1fr auto;
  }

  .score-track {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .spec-list div {
    grid-template-columns: 1fr;
    gap: var(--space-1);
  }

  .quiz-modal {
    padding: 0;
  }

  .quiz-shell {
    width: 100%;
    min-height: 100svh;
    max-height: 100svh;
    border-radius: 0;
    border: 0;
  }

  .quiz-options {
    grid-template-columns: 1fr;
  }

  .quiz-options button {
    min-height: 92px;
  }

  .product-story {
    padding: var(--space-12) 0;
  }

  .product-story-copy h2,
  .product-detail-hero h1,
  .right-things-section h2 {
    font-size: clamp(2.7rem, 16vw, 4.6rem);
  }

  .mobile-sticky-cart {
    position: sticky;
    bottom: 0;
    z-index: var(--z-header);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-3);
    border-top: 1px solid var(--color-border);
    background: rgba(255, 254, 250, .96);
    backdrop-filter: blur(14px);
  }

  .mobile-sticky-cart span {
    font-weight: 900;
  }

  .mobile-sticky-cart .button {
    min-width: 150px;
  }

  .product-list-head {
    align-items: start;
    flex-direction: column;
  }

  .modal-content {
    width: min(100% - 1rem, 560px);
    padding: var(--space-5);
  }

  .footer-bottom {
    flex-direction: column;
  }
}