/* ── Responsive (real viewport) ───────────────────── */
    @media (max-width: 980px) {
      .hero {
        min-height: auto;
        gap: 68px;
        padding-top: 64px;
        grid-template-columns: 1fr;
      }

      .hero-copy {
        max-width: 700px;
      }

      .queue-stage {
        max-width: 720px;
      }

      .access-inner {
        grid-template-columns: 1fr;
        gap: 44px;
      }
    }

    @media (max-width: 720px) {
      .site-header {
        min-height: 68px;
        padding: 0 20px;
      }

      .brand-mark {
        font-size: 24px;
      }

      .brand-name {
        font-size: 15px;
      }

      .hero {
        gap: 56px;
        padding: 52px 20px 76px;
      }

      h1 {
        font-size: 44px;
        line-height: 1.01;
      }

      .hero-lede {
        font-size: 17px;
      }

      .hero-actions {
        align-items: stretch;
        flex-direction: column;
      }

      .primary-cta {
        width: 100%;
      }

      .queue-shell {
        padding: 10px;
        border-radius: 16px;
      }

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

      .task {
        min-height: 60px;
        padding: 0 17px;
        font-size: 13px;
      }

      .task-action {
        display: none;
      }

      .task-marker {
        display: inline-flex;
        width: 18px;
        height: 18px;
        flex: none;
        align-items: center;
        justify-content: center;
        opacity: 0.9;
      }

      .task-marker svg {
        width: 17px;
        height: 17px;
        fill: none;
        stroke: currentColor;
        stroke-linecap: round;
        stroke-linejoin: round;
        stroke-width: 2.4;
      }

      .swipe-demo-underlay {
        position: absolute;
        inset: 0;
        display: flex;
        align-items: center;
        justify-content: flex-end;
        gap: 9px;
        padding: 0 11px;
      }

      .swipe-demo-underlay.later {
        justify-content: flex-start;
      }

      .swipe-demo-item {
        display: flex;
        width: 42px;
        flex-direction: column;
        align-items: center;
        gap: 3px;
      }

      .swipe-demo-action {
        display: inline-flex;
        width: 35px;
        height: 35px;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        color: #ffffff;
      }

      .swipe-demo-action.edit {
        background: #af52de;
      }

      .swipe-demo-action.later {
        background: #5856d6;
      }

      .swipe-demo-action.skip {
        background: #ff9500;
      }

      .swipe-demo-action svg {
        width: 17px;
        height: 17px;
        fill: none;
        stroke: currentColor;
        stroke-linecap: round;
        stroke-linejoin: round;
        stroke-width: 2;
      }

      .swipe-demo-label {
        color: var(--muted);
        font-size: 8px;
        font-weight: 600;
        line-height: 1;
      }

      .swipe-demo-row {
        position: relative;
        z-index: 1;
        transform: translateX(-112px);
      }

      .swipe-demo-row:not(.swipe-demo-row-right) .task-label {
        transform: translateX(112px);
      }

      .swipe-demo-row-right {
        transform: translateX(68px);
      }

      .queue-header-actions {
        display: none;
      }

      .queue-callout {
        display: none;
      }

      .principles,
      .lifecycle,
      .access {
        padding: 78px 20px 82px;
      }

      .bigger-picture {
        padding: 68px 20px 72px;
      }

      .principles h2,
      .lifecycle h2,
      .access-inner h2 {
        font-size: 35px;
      }

      .section-intro {
        font-size: 16px;
      }

      .principle-grid,
      .lifecycle-layout {
        margin-top: 44px;
        gap: 14px;
        grid-template-columns: 1fr;
      }

      .principle {
        min-height: 0;
      }

      .life-step:not(:last-child)::after {
        top: auto;
        right: 50%;
        bottom: -26px;
        transform: translate(50%, 0) rotate(90deg);
      }

      .access-card {
        padding: 6px 20px;
      }

      .access-mode {
        align-items: flex-start;
        flex-direction: column;
        gap: 12px;
      }

      .site-footer {
        align-items: flex-start;
        flex-direction: column;
        padding: 28px 20px 36px;
      }

      .footer-links {
        flex-wrap: wrap;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      .primary-cta,
      .primary-cta svg,
      .principle,
      .footer-links a {
        transition: none;
      }
    }