@media (min-width: 900px) {
  body {
    font-size: 16px;
    background: linear-gradient(135deg, #f7f8fa 0%, #f1f3f8 100%);
    background-attachment: fixed;
  }

  main {
    width: calc(100% - 244px);
    max-width: 1480px;
    margin: 0 0 0 244px;
    padding: 38px clamp(28px, 4vw, 72px) 64px;
    overflow: visible;
  }

  header { align-items: center; margin-bottom: 28px; }
  h1 { font-size: 38px; }
  .eyebrow { display: none; }
  .card { padding: 22px; border-radius: 22px; box-shadow: 0 8px 32px rgba(32, 33, 40, .055); }
  .grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
  .value { font-size: 34px; margin-top: 10px; }
  section { margin-top: 16px; }
  canvas { height: 240px; }

  .bottom-nav {
    left: 0;
    top: 0;
    bottom: 0;
    transform: none;
    width: 244px;
    height: 100vh;
    max-width: none;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 34px 20px;
    background: rgba(255, 255, 255, .9);
    border-top: 0;
    border-right: 1px solid var(--line);
    box-shadow: 8px 0 36px rgba(32, 33, 40, .035);
  }

  .bottom-nav::before {
    content: "LUMA HEALTH";
    display: block;
    color: var(--pink);
    font-size: 16px;
    font-weight: 800;
    letter-spacing: .08em;
    margin: 4px 12px 30px;
  }

  .nav-item {
    display: flex;
    align-items: center;
    gap: 14px;
    text-align: left;
    padding: 13px 15px;
    border-radius: 14px;
    font-size: 15px;
    font-weight: 650;
    transition: background .15s, color .15s;
  }

  .nav-item:hover { background: #f5f6f9; color: var(--text); }
  .nav-item.active { background: #fff0f5; color: var(--pink); }
  .nav-item b { display: inline-grid; place-items: center; width: 25px; font-size: 20px; line-height: 25px; }

  #summary.page.active {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(320px, .85fr);
    gap: 0 16px;
  }

  #summary > .grid { grid-column: 1 / -1; }
  #summary > .ai { grid-column: 2; grid-row: 2; }
  #summary > section:nth-of-type(2) { grid-column: 1; grid-row: 2; }
  #summary > section:nth-of-type(3) { grid-column: 1 / -1; }

  #today.page.active {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(320px, .75fr);
    gap: 16px;
    align-items: start;
  }

  #today > section { margin-top: 0; }
  #today > section:nth-of-type(2) { grid-column: 1; grid-row: 1 / 3; }
  #today > section:nth-of-type(1), #today > section:nth-of-type(3) { grid-column: 2; }

  #health.page.active, #sport.page.active {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 16px;
    align-items: start;
  }

  #health > .grid, #sport > .grid { grid-column: 1 / -1; }
  .metric-list { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 11px; }
  dialog { padding: 30px; }
}

@media (min-width: 1500px) {
  main { margin-left: max(244px, calc((100vw - 1724px) / 2 + 244px)); }
}