/* Desktop shell — sidebar + centred reading column (769px+) */
@media (min-width: 769px) {
  html, body { background: var(--bg); height: 100%; }
  body { overflow: hidden; }
  body.dev-on { overflow: hidden; }

  .stage, .app, .viewport, .tabbar { display: none !important; }

  .dt-root {
    display: flex; height: 100vh; width: 100%; background: var(--bg);
  }
  body.dev-on .dt-root { height: calc(100vh - 44px); }

  .dt-sidebar {
    flex: 0 0 304px; width: 304px; height: 100%;
    background: var(--forest); color: #fff;
    display: flex; flex-direction: column;
  }
  .dt-side-head {
    padding: 30px 28px 22px;
    border-bottom: 1px solid rgba(255,255,255,0.10);
  }
  .dt-side-logo { height: 26px; width: auto; display: block; }
  .dt-side-prop { margin-top: 22px; }
  .dt-side-eyebrow {
    font-weight: 500; font-size: 10.5px; letter-spacing: 0.16em;
    text-transform: uppercase; color: var(--wa-wheat); margin-bottom: 8px;
  }
  .dt-side-name {
    font-family: var(--serif); font-size: 28px; line-height: 1.05;
    letter-spacing: -0.015em;
  }
  .dt-nav { flex: 1; overflow-y: auto; padding: 16px 16px 8px; }
  .dt-nav-item {
    display: flex; align-items: center; gap: 13px; width: 100%;
    padding: 11px 14px; margin-bottom: 2px; cursor: pointer; text-align: left;
    background: none; border: none; border-radius: 10px;
    color: rgba(255,255,255,0.72); font-size: 15px;
    transition: background 0.14s, color 0.14s;
  }
  .dt-nav-item .ic { color: rgba(255,255,255,0.5); }
  .dt-nav-item:hover { background: rgba(255,255,255,0.07); color: #fff; }
  .dt-nav-item.active { background: rgba(255,255,255,0.12); color: #fff; font-weight: 500; }
  .dt-nav-item.active .ic { color: #fff; }
  .dt-side-foot {
    padding: 16px; border-top: 1px solid rgba(255,255,255,0.10);
  }
  .dt-host { display: flex; align-items: center; gap: 12px; padding: 6px 6px 14px; }
  .dt-host img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; }
  .dt-host-name { font-family: var(--serif); font-size: 17px; }
  .dt-host-role { font-size: 11.5px; color: rgba(255,255,255,0.55); }

  .dt-main { position: relative; flex: 1; min-width: 0; height: 100%; }
  .dt-main .screen {
    position: absolute; inset: 0; padding-bottom: 48px; overflow-y: auto;
    scrollbar-width: thin; background: var(--bg);
  }
  .dt-main .screen-pad {
    max-width: 760px; margin: 0 auto; padding: 40px 48px 80px;
  }
  .dt-main .hero-band {
    max-width: 848px; width: calc(100% - 96px); margin: 36px auto 0;
    border-radius: 12px; overflow: hidden; min-height: 280px;
  }
  .dt-main .verify-brand { padding-top: 48px; }
  .dt-main .verify-brand .display { font-size: 42px; }
  .dt-main .display { font-size: 40px; }
  .dt-main .btn { max-width: 420px; }
  .dt-main .stack-lg > .btn,
  .dt-main .stack > .btn { max-width: 420px; }
  .dt-two {
    display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 18px; align-items: start;
  }
  .dt-crumb {
    position: sticky; top: 0; z-index: 40;
    display: flex; align-items: center; gap: 4px;
    background: rgba(248,248,248,0.92); backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--hair-2);
    padding: 12px max(48px, calc((100% - 760px) / 2 + 48px));
  }
  .dt-back {
    display: inline-flex; align-items: center; gap: 8px; cursor: pointer;
    background: none; border: none; padding: 6px 8px; border-radius: 8px;
    font-weight: 500; font-size: 13.5px; color: var(--forest);
  }
  .dt-back:hover { background: var(--surface-2); }
}

@media (max-width: 768px) {
  .dt-root { display: none !important; }
}