@media (max-width: 640px) {
      .section,
      .section.tight,
      .statement,
      .method-band,
      .final-section {
        padding: 58px 18px;
      }

      .hero {
        padding: 20px 18px 0;
      }

      h1 {
        font-size: clamp(31px, 9.2vw, 38px);
        line-height: 1;
      }

      .hero-lede {
        font-size: clamp(21px, 5.4vw, 27px);
        text-align: center;
      }

      .hero-actions,
      .btn {
        width: 100%;
      }

      .hero-actions {
        gap: 12px;
      }

      .event-date {
        margin-top: 18px;
        font-size: 32px;
        text-align: center;
      }

      .event-date span {
        font-size: 0.58em;
      }

      .microcopy {
        width: 100%;
        text-align: center;
      }

      .hero .microcopy {
        padding-bottom: 8px;
      }

      .hero-visual {
        min-height: auto;
        margin-top: 8px;
        place-items: end center;
      }

      .hero-art {
        display: block;
        width: min(355px, 100%);
        max-height: none;
        margin-top: -90px;
        margin-bottom: -1px;
      }

      .proof-row,
      .cost-infographic,
      .cards,
      .list-grid,
      .final-list {
        grid-template-columns: 1fr;
      }

      .offer-section {
        text-align: center;
      }

      .offer-copy p {
        margin-left: auto;
        margin-right: auto;
      }

      .countdown {
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 6px;
      }

      .countdown-item {
        padding: 10px 4px;
      }

      .countdown-item strong {
        font-size: 24px;
      }

      .countdown-item span {
        font-size: 10px;
      }

      .proof-item span {
        font-size: 20px;
      }

      .audience-split .section-title {
        font-size: calc(clamp(34px, 5vw, 60px) + 5px);
      }

      .cta-section {
        padding-top: 50px;
        padding-bottom: 50px;
      }

      .cost-infographic {
        padding: 18px;
      }

      .infographic-shirt {
        min-height: 360px;
      }

      .diagram-shirt {
        width: 160px;
        height: 210px;
      }

      .diagram-shirt::before,
      .diagram-shirt::after {
        top: 45px;
        width: 56px;
        height: 112px;
      }

      .diagram-shirt::before {
        left: -38px;
      }

      .diagram-shirt::after {
        right: -38px;
      }

      .diagram-print {
        top: 88px;
        width: 96px;
        font-size: 17px;
      }

      .profit-ribbon strong {
        font-size: 44px;
      }

      .card {
        min-height: 150px;
      }

      .card span {
        font-size: 48px;
        line-height: 0.9;
      }

      .card strong {
        margin-top: 18px;
        font-size: 21px;
      }

      .desktop-only {
        display: none;
      }

      .mobile-only {
        display: inline;
      }

    }