/* Shared primary navigation dimensions across all three pages. */
@media (min-width: 701px) {
  body .home-head .home-nav,
  body .top .nav,
  body:not(.three-d-mode) .header .header-tools {
    gap: 8px !important;
  }
  body .home-head .home-nav a,
  body .top .nav a,
  body:not(.three-d-mode) .header .header-tools > a[href="home.html"],
  body:not(.three-d-mode) .header .header-tools > #creationHeaderBtn,
  body:not(.three-d-mode) .header .header-tools > #guideHeaderBtn {
    box-sizing: border-box !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    flex: 0 0 108px !important;
    width: 108px !important;
    min-width: 108px !important;
    max-width: 108px !important;
    height: 36px !important;
    min-height: 36px !important;
    max-height: 36px !important;
    margin: 0 !important;
    padding: 0 12px !important;
    border-width: 1px !important;
    border-style: solid !important;
    border-radius: 18px !important;
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif !important;
    font-size: 11px !important;
    font-weight: 800 !important;
    line-height: normal !important;
    letter-spacing: 0 !important;
    white-space: nowrap !important;
    text-decoration: none !important;
  }
}
@media (max-width: 700px) {
  body .home-head .home-nav,
  body .top .nav {
    display: grid !important;
    width: 100% !important;
    grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
    gap: 5px !important;
  }
  body .home-head .home-nav a,
  body .top .nav a,
  body:not(.three-d-mode) .header .header-tools > a[href="home.html"],
  body:not(.three-d-mode) .header .header-tools > #creationHeaderBtn,
  body:not(.three-d-mode) .header .header-tools > #guideHeaderBtn {
    box-sizing: border-box !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 100% !important;
    margin: 0 !important;
    min-width: 0 !important;
    max-width: none !important;
    height: 42px !important;
    min-height: 42px !important;
    max-height: 42px !important;
    padding: 0 3px !important;
    border-width: 1px !important;
    border-style: solid !important;
    border-radius: 18px !important;
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif !important;
    font-size: 11px !important;
    font-weight: 800 !important;
    line-height: normal !important;
    letter-spacing: 0 !important;
    white-space: nowrap !important;
    text-align: center !important;
    text-decoration: none !important;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
  }
  body .home-head .home-nav .guide-link,
  body .top .nav a[href="./guide.html"],
  body:not(.three-d-mode) .header .header-tools > #guideHeaderBtn {
    font-size: 10px !important;
    padding: 0 9px !important;
  }
  /* All three links share the full grid area; align without offset margins. */
  body:not(.three-d-mode) .header .header-tools > a[href="home.html"],
  body:not(.three-d-mode) .header .header-tools > #creationHeaderBtn,
  body:not(.three-d-mode) .header .header-tools > #guideHeaderBtn {
    width: calc((100% - 10px) / 3) !important;
    margin: 0 !important;
  }
  body:not(.three-d-mode) .header .header-tools > a[href="home.html"] {
    justify-self: start !important;
  }
  body:not(.three-d-mode) .header .header-tools > #creationHeaderBtn {
    justify-self: center !important;
  }
  body:not(.three-d-mode) .header .header-tools > #guideHeaderBtn {
    justify-self: end !important;
  }
}