@media (min-width: 768px) {
  body.desktop-studio-v3-active {
    --dv3-bg: #f5f7fb;
    --dv3-card: #ffffff;
    --dv3-ink: #18233b;
    --dv3-muted: #667085;
    --dv3-line: #e4e8f0;
    --dv3-soft: #f7f8fb;
    --dv3-accent: var(--lessonly-mode-accent, #0f9f76);
    --dv3-shadow: 0 16px 45px rgba(28, 39, 66, 0.08);
    min-width: 768px;
    overflow: hidden;
    background: var(--dv3-bg);
  }

  body.desktop-studio-v3-active[data-studio-mode="teach"] {
    --dv3-accent: #6657e8;
  }

  body.desktop-studio-v3-active > .site-header,
  body.desktop-studio-v3-active #mainContent > .hero,
  body.desktop-studio-v3-active #create > .section-title,
  body.desktop-studio-v3-active #mainContent > section:not(#create):not(#creationsPage),
  body.desktop-studio-v3-active > footer {
    display: none !important;
  }

  body.desktop-studio-v3-active #mainContent {
    min-height: 100dvh;
    padding: 0 !important;
  }

  body.desktop-studio-v3-active #create {
    display: block !important;
    min-height: 100dvh;
    margin: 0 !important;
    padding: 0 !important;
    background: var(--dv3-bg) !important;
  }

  body.desktop-studio-v3-active #create.studio-page-hidden {
    display: none !important;
  }

  body.desktop-studio-v3-active .upload-flow.studio-shell {
    display: block !important;
    width: 100%;
    max-width: none;
    min-height: 100dvh;
    margin: 0 !important;
    padding: 0 !important;
  }

  body.desktop-studio-v3-active .upload-flow.studio-shell > :not(#desktopStudioV3):not(#sourceModal):not(#classroomModal):not(#studioDrawerBackdrop) {
    display: none !important;
  }

  .desktop-studio-v3 {
    display: grid;
    grid-template-columns: 15rem minmax(0, 1fr) 21rem;
    width: 100%;
    height: 100dvh;
    overflow: hidden;
    color: var(--dv3-ink);
    background: var(--dv3-bg);
  }

  .dv3-sidebar {
    z-index: 10;
    display: grid;
    grid-template-rows: auto auto minmax(0, 1fr) auto;
    gap: 1rem;
    min-width: 0;
    padding: 1rem 0.85rem;
    border-right: 1px solid var(--dv3-line);
    background: rgba(255, 255, 255, 0.98);
  }

  .dv3-brand {
    display: flex;
    gap: 0.65rem;
    align-items: center;
    padding: 0.35rem 0.45rem;
    color: var(--dv3-ink);
    text-decoration: none;
  }

  .dv3-brand img {
    width: 2.3rem;
    height: 2.3rem;
    object-fit: contain;
  }

  .dv3-brand > span,
  .dv3-profile > span:nth-child(2) {
    display: grid;
    min-width: 0;
    gap: 0.05rem;
  }

  .dv3-brand strong {
    font-size: 1rem;
    letter-spacing: -0.02em;
  }

  .dv3-brand small,
  .dv3-profile small {
    overflow: hidden;
    color: var(--dv3-muted);
    font-size: 0.68rem;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .dv3-mode-switch {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.25rem;
    padding: 0.22rem;
    border: 1px solid #e1e6ee;
    border-radius: 0.78rem;
    background: #f1f3f7;
  }

  .dv3-mode-switch button {
    min-height: 2.2rem;
    border: 0;
    border-radius: 0.62rem;
    background: transparent;
    color: #697386;
    font-size: 0.76rem;
    font-weight: 850;
    cursor: pointer;
  }

  .dv3-mode-switch button.is-active {
    background: var(--dv3-accent);
    color: #fff;
    box-shadow: 0 5px 13px color-mix(in srgb, var(--dv3-accent) 24%, transparent);
  }

  .dv3-nav {
    display: grid;
    align-content: start;
    gap: 0.35rem;
  }

  .dv3-nav button {
    display: grid;
    grid-template-columns: 1.85rem minmax(0, 1fr) auto;
    gap: 0.6rem;
    align-items: center;
    min-height: 2.75rem;
    padding: 0.55rem 0.7rem;
    border: 0;
    border-radius: 0.78rem;
    background: transparent;
    color: #5e687c;
    text-align: left;
    cursor: pointer;
  }

  .dv3-nav button > span {
    display: grid;
    width: 1.85rem;
    height: 1.85rem;
    place-items: center;
    border-radius: 0.55rem;
    color: #7b8495;
    font-size: 1rem;
  }

  .dv3-nav button b {
    overflow: hidden;
    font-size: 0.79rem;
    font-weight: 780;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .dv3-nav button em {
    display: grid;
    min-width: 1.3rem;
    height: 1.3rem;
    place-items: center;
    border-radius: 999px;
    background: #eef1f5;
    color: #6b7280;
    font-size: 0.65rem;
    font-style: normal;
    font-weight: 800;
  }

  .dv3-nav button:hover,
  .dv3-nav button:focus-visible {
    background: #f4f6f9;
    color: var(--dv3-ink);
    outline: 0;
  }

  .dv3-nav button.is-active {
    background: color-mix(in srgb, var(--dv3-accent) 10%, #fff);
    color: color-mix(in srgb, var(--dv3-accent) 80%, #17243a);
  }

  .dv3-nav button.is-active > span {
    background: var(--dv3-accent);
    color: #fff;
    box-shadow: 0 5px 12px color-mix(in srgb, var(--dv3-accent) 22%, transparent);
  }

  .dv3-side-help {
    padding: 0.8rem;
    border: 1px solid #e1e6ef;
    border-radius: 0.85rem;
    background:
      linear-gradient(145deg, color-mix(in srgb, var(--dv3-accent) 7%, #fff), #fff);
  }

  .dv3-side-help strong {
    color: var(--dv3-ink);
    font-size: 0.78rem;
  }

  .dv3-side-help p {
    margin: 0.3rem 0 0.6rem;
    color: var(--dv3-muted);
    font-size: 0.68rem;
    line-height: 1.45;
  }

  .dv3-side-help button {
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--dv3-accent);
    font-size: 0.7rem;
    font-weight: 850;
    cursor: pointer;
  }

  .dv3-profile-wrap {
    position: relative;
    z-index: 45;
    min-width: 0;
  }

  .dv3-topbar-profile {
    z-index: 60;
    justify-self: end;
  }

  .dv3-topbar-profile .dv3-profile {
    grid-template-columns: 2.1rem;
    width: 2.9rem;
    padding: 0.35rem;
    border-radius: 999px;
  }

  .dv3-topbar-profile .dv3-profile > span:nth-child(2),
  .dv3-topbar-profile .dv3-profile > b {
    display: none;
  }

  .dv3-topbar-profile .dv3-profile-avatar {
    border-radius: 999px;
  }

  .dv3-profile {
    display: grid;
    grid-template-columns: 2.1rem minmax(0, 1fr) auto;
    gap: 0.6rem;
    align-items: center;
    min-width: 0;
    padding: 0.55rem;
    border: 1px solid #e4e8ef;
    border-radius: 0.8rem;
    background: #fff;
    color: var(--dv3-ink);
    text-align: left;
    cursor: pointer;
    width: 100%;
  }

  .dv3-profile:hover,
  .dv3-profile:focus-visible,
  .dv3-profile[aria-expanded="true"] {
    border-color: color-mix(in srgb, var(--dv3-accent) 40%, #d9dee8);
    box-shadow: 0 7px 20px color-mix(in srgb, var(--dv3-accent) 10%, transparent);
    outline: 0;
  }

  .dv3-profile-avatar {
    display: grid;
    width: 2.1rem;
    height: 2.1rem;
    place-items: center;
    overflow: hidden;
    border-radius: 0.65rem;
    background: var(--dv3-accent);
    color: #fff;
    font-size: 0.82rem;
    font-weight: 900;
  }

  .dv3-profile-avatar.is-large {
    width: 2.8rem;
    height: 2.8rem;
    border-radius: 0.82rem;
    font-size: 0.9rem;
  }

  .dv3-profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .dv3-profile-avatar b {
    font: inherit;
  }

  .dv3-profile strong {
    overflow: hidden;
    font-size: 0.75rem;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .dv3-profile-menu[hidden] {
    display: none !important;
  }

  .dv3-profile-menu {
    position: absolute;
    z-index: 50;
    bottom: calc(100% + 0.55rem);
    left: 0;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto;
    width: min(20rem, calc(100vw - 6rem));
    max-height: min(36rem, calc(100dvh - 5.5rem));
    overflow: hidden;
    border: 1px solid #dfe4ec;
    border-radius: 1rem;
    background: #fff;
    box-shadow: 0 24px 65px rgba(15, 23, 42, 0.2);
  }

  .dv3-topbar-profile .dv3-profile-menu {
    top: calc(100% + 0.55rem);
    right: 0;
    bottom: auto;
    left: auto;
    max-height: min(36rem, calc(100dvh - 6.5rem));
  }

  .dv3-profile-menu::after {
    position: absolute;
    bottom: -0.38rem;
    left: 1rem;
    width: 0.72rem;
    height: 0.72rem;
    transform: rotate(45deg);
    border-right: 1px solid #dfe4ec;
    border-bottom: 1px solid #dfe4ec;
    background: #fff;
    content: "";
  }

  .dv3-topbar-profile .dv3-profile-menu::after {
    top: -0.38rem;
    right: 1rem;
    bottom: auto;
    left: auto;
    border: 0;
    border-top: 1px solid #dfe4ec;
    border-left: 1px solid #dfe4ec;
  }

  .dv3-profile-menu-head {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 0.72rem;
    align-items: center;
    padding: 0.85rem;
    border-bottom: 1px solid #edf0f4;
    background:
      linear-gradient(145deg, color-mix(in srgb, var(--dv3-accent) 7%, #fff), #fff);
  }

  .dv3-profile-menu-head > div {
    display: grid;
    min-width: 0;
    gap: 0.08rem;
  }

  .dv3-profile-menu-head strong,
  .dv3-profile-menu-head small {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .dv3-profile-menu-head strong {
    color: var(--dv3-ink);
    font-size: 0.78rem;
  }

  .dv3-profile-menu-head small {
    color: var(--dv3-muted);
    font-size: 0.64rem;
  }

  .dv3-profile-menu-head em {
    width: fit-content;
    margin-top: 0.18rem;
    padding: 0.16rem 0.42rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--dv3-accent) 10%, #fff);
    color: color-mix(in srgb, var(--dv3-accent) 82%, #213044);
    font-size: 0.58rem;
    font-style: normal;
    font-weight: 850;
    text-transform: capitalize;
  }

  .dv3-profile-menu-list {
    display: grid;
    align-content: start;
    gap: 0.18rem;
    min-height: 0;
    padding: 0.48rem;
    overflow-y: auto;
    overscroll-behavior: contain;
  }

  .dv3-profile-menu-list button,
  .dv3-profile-menu > footer button {
    display: grid;
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: 0.62rem;
    align-items: center;
    width: 100%;
    min-width: 0;
    padding: 0.52rem 0.58rem;
    border: 0;
    border-radius: 0.68rem;
    background: transparent;
    color: #4f5c70;
    text-align: left;
    cursor: pointer;
  }

  .dv3-profile-menu-list button > span:first-child,
  .dv3-profile-menu > footer button > span:first-child {
    display: grid;
    width: 2rem;
    height: 2rem;
    place-items: center;
    border-radius: 0.58rem;
    background: #f1f3f7;
    color: #687386;
  }

  .dv3-profile-menu .account-nav-icon {
    width: 1.05rem;
    height: 1.05rem;
  }

  .dv3-profile-fallback-icon {
    font-size: 0.78rem;
    font-weight: 900;
  }

  .dv3-profile-menu-list button > span:nth-child(2) {
    display: grid;
    min-width: 0;
    gap: 0.06rem;
  }

  .dv3-profile-menu-list strong,
  .dv3-profile-menu-list small {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .dv3-profile-menu-list strong,
  .dv3-profile-menu > footer strong {
    color: var(--dv3-ink);
    font-size: 0.7rem;
  }

  .dv3-profile-menu-list small {
    color: var(--dv3-muted);
    font-size: 0.59rem;
  }

  .dv3-profile-menu-list button:hover,
  .dv3-profile-menu-list button:focus-visible,
  .dv3-profile-menu > footer button:hover,
  .dv3-profile-menu > footer button:focus-visible {
    background: color-mix(in srgb, var(--dv3-accent) 7%, #fff);
    outline: 0;
  }

  .dv3-profile-menu > footer {
    padding: 0.42rem 0.48rem;
    border-top: 1px solid #edf0f4;
  }

  .dv3-profile-menu > footer button {
    color: #b42318;
  }

  .dv3-profile-menu > footer button > span:first-child {
    background: #fff1f0;
    color: #b42318;
  }

  .dv3-profile-menu > footer strong {
    color: inherit;
  }

  .dv3-main {
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
    min-width: 0;
    min-height: 0;
    overflow: hidden;
  }

  .dv3-main:focus {
    outline: 0;
  }

  .dv3-topbar {
    position: relative;
    z-index: 40;
    display: grid;
    grid-template-columns: minmax(10rem, 0.75fr) minmax(15rem, 1fr) auto auto;
    gap: 1rem;
    align-items: center;
    min-width: 0;
    min-height: 4.5rem;
    padding: 0.75rem 1.25rem;
    overflow: visible;
    border-bottom: 1px solid var(--dv3-line);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(14px);
  }

  .dv3-breadcrumb {
    display: grid;
    gap: 0.08rem;
    min-width: 0;
  }

  .dv3-breadcrumb span {
    color: var(--dv3-accent);
    font-size: 0.64rem;
    font-weight: 850;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .dv3-breadcrumb strong {
    overflow: hidden;
    color: var(--dv3-ink);
    font-size: 0.92rem;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .dv3-command {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 0.55rem;
    align-items: center;
    min-width: 0;
    min-height: 2.65rem;
    padding: 0.5rem 0.65rem;
    border: 1px solid #dfe4ec;
    border-radius: 0.75rem;
    background: #f8f9fb;
    color: #7b8495;
    text-align: left;
    cursor: pointer;
  }

  .dv3-command > span:nth-child(2) {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .dv3-command kbd,
  .dv3-command-palette kbd {
    min-width: 1.45rem;
    padding: 0.18rem 0.35rem;
    border: 1px solid #dfe4ec;
    border-bottom-width: 2px;
    border-radius: 0.35rem;
    background: #fff;
    color: #7b8495;
    font: 700 0.62rem/1.1 Inter, sans-serif;
    text-align: center;
  }

  .dv3-top-actions {
    display: flex;
    gap: 0.45rem;
    align-items: center;
    justify-content: flex-end;
    min-width: 0;
  }

  .dv3-top-actions button {
    flex: 0 0 auto;
    min-height: 2.35rem;
    padding: 0.48rem 0.75rem;
    border: 1px solid #dfe4ec;
    border-radius: 0.68rem;
    background: #fff;
    color: #475467;
    font-size: 0.7rem;
    font-weight: 820;
    white-space: nowrap;
    cursor: pointer;
  }

  .dv3-top-actions button:first-child {
    border-color: transparent;
    background: var(--dv3-accent);
    color: #fff;
  }

  .dv3-home,
  .dv3-special-view,
  .dv3-workspace-host {
    min-width: 0;
    min-height: 0;
    overflow: auto;
    padding: 1.25rem;
    scrollbar-gutter: stable;
  }

  .dv3-home[hidden],
  .dv3-special-view[hidden],
  .dv3-workspace-host[hidden] {
    display: none !important;
  }

  .dv3-welcome {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 1rem;
  }

  .dv3-welcome > div > span,
  .dv3-section-head > div > span,
  .dv3-special-head > div > span {
    color: var(--dv3-accent);
    font-size: 0.66rem;
    font-weight: 850;
    letter-spacing: 0.09em;
    text-transform: uppercase;
  }

  .dv3-welcome h1,
  .dv3-special-head h1 {
    margin: 0.2rem 0 0;
    color: var(--dv3-ink);
    font-size: clamp(1.65rem, 2.4vw, 2.25rem);
    letter-spacing: -0.035em;
    line-height: 1.08;
  }

  .dv3-welcome p,
  .dv3-special-head p {
    margin: 0.38rem 0 0;
    color: var(--dv3-muted);
    font-size: 0.87rem;
    line-height: 1.5;
  }

  .dv3-welcome > button {
    display: flex;
    gap: 0.4rem;
    align-items: center;
    padding: 0.52rem 0.7rem;
    border: 1px solid #dfe4ec;
    border-radius: 0.65rem;
    background: #fff;
    color: #5e687b;
    font-size: 0.7rem;
    font-weight: 800;
    cursor: pointer;
  }

  .dv3-resume-card {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 0.85rem;
    align-items: center;
    padding: 0.9rem 1rem;
    border: 1px solid color-mix(in srgb, var(--dv3-accent) 24%, #e4e8ef);
    border-radius: 1rem;
    background:
      linear-gradient(110deg, color-mix(in srgb, var(--dv3-accent) 9%, #fff), #fff 66%);
    box-shadow: 0 10px 30px color-mix(in srgb, var(--dv3-accent) 8%, transparent);
  }

  .dv3-resume-icon {
    display: grid;
    width: 2.55rem;
    height: 2.55rem;
    place-items: center;
    border-radius: 0.78rem;
    background: var(--dv3-accent);
    color: #fff;
    font-size: 1.15rem;
    font-weight: 900;
  }

  .dv3-resume-card > div:nth-child(2) {
    display: grid;
    min-width: 0;
    gap: 0.08rem;
  }

  .dv3-resume-card span,
  .dv3-resume-card small {
    overflow: hidden;
    color: var(--dv3-muted);
    font-size: 0.68rem;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .dv3-resume-card strong {
    overflow: hidden;
    color: var(--dv3-ink);
    font-size: 0.88rem;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .dv3-resume-card > button,
  .dv3-special-head > button {
    padding: 0.62rem 0.85rem;
    border: 0;
    border-radius: 0.7rem;
    background: var(--dv3-accent);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 850;
    cursor: pointer;
  }

  .dv3-home-section,
  .dv3-special-card {
    margin-top: 1rem;
    padding: 1rem;
    border: 1px solid var(--dv3-line);
    border-radius: 1rem;
    background: var(--dv3-card);
    box-shadow: 0 8px 24px rgba(28, 39, 66, 0.04);
  }

  .dv3-section-head {
    display: flex;
    gap: 1rem;
    align-items: end;
    justify-content: space-between;
    margin-bottom: 0.75rem;
  }

  .dv3-section-head h2 {
    margin: 0.15rem 0 0;
    color: var(--dv3-ink);
    font-size: 1rem;
  }

  .dv3-section-head > button {
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--dv3-accent);
    font-size: 0.68rem;
    font-weight: 850;
    cursor: pointer;
  }

  .dv3-goal-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.65rem;
  }

  .dv3-goal-card {
    display: grid;
    grid-template-columns: 2.5rem minmax(0, 1fr) auto;
    gap: 0.65rem;
    align-items: center;
    min-width: 0;
    min-height: 5.3rem;
    padding: 0.72rem;
    border: 1px solid #e2e6ed;
    border-radius: 0.85rem;
    background: #fff;
    color: var(--dv3-ink);
    text-align: left;
    cursor: pointer;
    transition: transform 150ms ease, border-color 150ms ease, box-shadow 150ms ease;
  }

  .dv3-goal-card:hover,
  .dv3-goal-card:focus-visible {
    transform: translateY(-2px);
    border-color: color-mix(in srgb, var(--dv3-accent) 40%, #dfe4ec);
    box-shadow: 0 12px 24px rgba(28, 39, 66, 0.1);
    outline: 0;
  }

  .dv3-goal-card[aria-busy="true"] {
    opacity: 0.65;
    pointer-events: none;
  }

  .dv3-goal-icon,
  .dv3-action-grid > * > span:first-child {
    display: grid;
    width: 2.5rem;
    height: 2.5rem;
    place-items: center;
    border-radius: 0.72rem;
    background: #edf2f7;
    color: #48566f;
    font-size: 0.85rem;
    font-weight: 900;
  }

  .dv3-tool-logo-wrap {
    overflow: hidden;
    padding: 0;
    background: transparent !important;
    color: inherit !important;
    box-shadow: 0 3px 9px rgba(30, 43, 68, 0.12);
  }

  .dv3-tool-logo {
    display: block;
    width: 100%;
    height: 100%;
    border-radius: inherit;
    object-fit: cover;
  }

  .dv3-goal-card.is-mint .dv3-goal-icon,
  .dv3-action-grid .is-mint { background: #e5f8f1; color: #0b8563; }
  .dv3-goal-card.is-green .dv3-goal-icon,
  .dv3-action-grid .is-green { background: #e9f8ed; color: #21814a; }
  .dv3-goal-card.is-violet .dv3-goal-icon,
  .dv3-action-grid .is-violet { background: #f0eaff; color: #6e47bd; }
  .dv3-goal-card.is-teal .dv3-goal-icon,
  .dv3-action-grid .is-teal { background: #e5f8f5; color: #167b70; }
  .dv3-goal-card.is-indigo .dv3-goal-icon,
  .dv3-action-grid .is-indigo { background: #eceeff; color: #5060ce; }
  .dv3-goal-card.is-orange .dv3-goal-icon,
  .dv3-action-grid .is-orange { background: #fff0e5; color: #c75a13; }
  .dv3-goal-card.is-sky .dv3-goal-icon,
  .dv3-action-grid .is-sky { background: #e5f5fc; color: #147ca5; }
  .dv3-goal-card.is-amber .dv3-goal-icon,
  .dv3-action-grid .is-amber { background: #fff5d8; color: #a66b00; }

  .dv3-goal-card > span:nth-child(2) {
    display: grid;
    min-width: 0;
    gap: 0.15rem;
  }

  .dv3-goal-card strong {
    overflow: hidden;
    font-size: 0.76rem;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .dv3-goal-card small {
    display: -webkit-box;
    overflow: hidden;
    color: var(--dv3-muted);
    font-size: 0.65rem;
    line-height: 1.35;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
  }

  .dv3-goal-card > b {
    color: #9aa2b1;
  }

  .dv3-home-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(16rem, 0.75fr);
    gap: 1rem;
  }

  .dv3-subject-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
  }

  .dv3-subject-chip,
  .dv3-empty-subject {
    display: grid;
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: 0.55rem;
    align-items: center;
    min-width: 8.5rem;
    padding: 0.5rem 0.65rem;
    border: 1px solid #e1e6ed;
    border-radius: 0.75rem;
    background: #fafbfc;
    color: var(--dv3-ink);
    text-align: left;
    cursor: pointer;
  }

  .dv3-subject-chip > span,
  .dv3-empty-subject > span {
    display: grid;
    width: 2rem;
    height: 2rem;
    place-items: center;
    border-radius: 0.58rem;
    background: #e9edf4;
    color: #59657a;
    font-size: 0.75rem;
    font-weight: 900;
  }

  .dv3-subject-chip strong,
  .dv3-empty-subject strong {
    overflow: hidden;
    font-size: 0.72rem;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .dv3-subject-chip.is-primary {
    border-color: color-mix(in srgb, var(--dv3-accent) 35%, #e1e6ed);
    background: color-mix(in srgb, var(--dv3-accent) 7%, #fff);
  }

  .dv3-subject-chip.is-primary > span {
    background: var(--dv3-accent);
    color: #fff;
  }

  .dv3-empty-subject {
    grid-template-rows: auto auto;
  }

  .dv3-empty-subject > span {
    grid-row: 1 / 3;
  }

  .dv3-empty-subject small {
    color: var(--dv3-muted);
    font-size: 0.62rem;
  }

  .dv3-study-pack {
    align-self: stretch;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 0.8rem;
    align-items: center;
    margin-top: 1rem;
    padding: 0.9rem;
    border: 1px solid color-mix(in srgb, var(--dv3-accent) 24%, #e2e6ee);
    border-radius: 1rem;
    background:
      radial-gradient(circle at 90% 10%, color-mix(in srgb, var(--dv3-accent) 15%, transparent), transparent 45%),
      #fff;
    color: var(--dv3-ink);
    text-align: left;
    cursor: pointer;
  }

  .dv3-pack-art {
    position: relative;
    width: 3rem;
    height: 3rem;
  }

  .dv3-pack-art i {
    position: absolute;
    width: 2rem;
    height: 2.45rem;
    border: 1px solid color-mix(in srgb, var(--dv3-accent) 45%, #fff);
    border-radius: 0.45rem;
    background: color-mix(in srgb, var(--dv3-accent) 13%, #fff);
  }

  .dv3-pack-art i:nth-child(1) { left: 0.1rem; top: 0.25rem; transform: rotate(-10deg); }
  .dv3-pack-art i:nth-child(2) { left: 0.55rem; top: 0.12rem; transform: rotate(2deg); }
  .dv3-pack-art i:nth-child(3) { left: 0.95rem; top: 0.35rem; transform: rotate(11deg); background: var(--dv3-accent); }

  .dv3-study-pack > span:nth-child(2) {
    display: grid;
    gap: 0.12rem;
  }

  .dv3-study-pack small,
  .dv3-study-pack em {
    color: var(--dv3-muted);
    font-size: 0.64rem;
    font-style: normal;
  }

  .dv3-study-pack strong {
    font-size: 0.86rem;
  }

  .dv3-assistant {
    display: grid;
    grid-template-rows: auto auto minmax(0, 1fr) auto auto;
    gap: 0.75rem;
    min-width: 0;
    min-height: 0;
    padding: 1rem 0.85rem;
    overflow: hidden;
    border-left: 1px solid var(--dv3-line);
    background: rgba(255, 255, 255, 0.98);
  }

  .dv3-assistant > header {
    display: flex;
    gap: 0.65rem;
    align-items: center;
    justify-content: space-between;
  }

  .dv3-assistant > header > div {
    display: grid;
    gap: 0.08rem;
  }

  .dv3-assistant > header span,
  .dv3-context-card > span,
  .dv3-ask-card > span {
    color: var(--dv3-accent);
    font-size: 0.61rem;
    font-weight: 850;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .dv3-assistant > header strong {
    color: var(--dv3-ink);
    font-size: 0.86rem;
  }

  .dv3-assistant > header button {
    width: 2rem;
    height: 2rem;
    border: 1px solid #e1e6ed;
    border-radius: 0.6rem;
    background: #fff;
    color: #6b7280;
    cursor: pointer;
  }

  .dv3-context-card {
    position: relative;
    display: grid;
    gap: 0.18rem;
    padding: 0.75rem;
    border: 1px solid color-mix(in srgb, var(--dv3-accent) 24%, #e2e6ed);
    border-radius: 0.85rem;
    background: color-mix(in srgb, var(--dv3-accent) 6%, #fff);
  }

  .dv3-context-card strong {
    overflow: hidden;
    padding-right: 3rem;
    color: var(--dv3-ink);
    font-size: 0.78rem;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .dv3-context-card small {
    overflow: hidden;
    padding-right: 3rem;
    color: var(--dv3-muted);
    font-size: 0.63rem;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .dv3-context-card button {
    position: absolute;
    right: 0.65rem;
    bottom: 0.65rem;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--dv3-accent);
    font-size: 0.65rem;
    font-weight: 850;
    cursor: pointer;
  }

  .dv3-assistant-section {
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
    gap: 0.45rem;
    min-width: 0;
    min-height: 0;
    overflow: auto;
    overscroll-behavior: contain;
  }

  .dv3-assistant-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0;
  }

  .dv3-assistant-heading > span {
    color: #475467;
    font-size: 0.68rem;
    font-weight: 850;
  }

  .dv3-assistant-heading button {
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--dv3-accent);
    font-size: 0.65rem;
    font-weight: 850;
    cursor: pointer;
  }

  #desktopV3SourceHost .source-uploader-panel {
    box-sizing: border-box;
    display: block !important;
    position: static !important;
    width: 100% !important;
    max-width: 100% !important;
    min-height: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
    border: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
    transform: none !important;
  }

  #desktopV3SourceHost .source-uploader-panel > .panel-label,
  #desktopV3SourceHost .source-uploader-panel > .source-status,
  #desktopV3SourceHost .source-chat-box {
    display: none !important;
  }

  #desktopV3SourceHost .source-dock-row {
    box-sizing: border-box;
    display: grid !important;
    grid-template-columns: 1fr !important;
    grid-template-rows: auto minmax(0, 1fr) !important;
    gap: 0.45rem !important;
    width: 100% !important;
    max-width: 100% !important;
    min-height: 0 !important;
    padding: 0 !important;
    overflow: hidden !important;
    background: transparent !important;
  }

  #desktopV3SourceHost .add-source-trigger {
    box-sizing: border-box;
    display: grid !important;
    grid-template-columns: 1.8rem minmax(0, 1fr);
    grid-template-rows: auto !important;
    gap: 0.5rem;
    align-items: center;
    position: static !important;
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    min-height: 2.6rem !important;
    padding: 0.45rem 0.55rem !important;
    overflow: hidden;
    border: 1px dashed color-mix(in srgb, var(--dv3-accent) 40%, #dfe4ec) !important;
    border-radius: 0.7rem !important;
    background: color-mix(in srgb, var(--dv3-accent) 5%, #fff) !important;
    color: var(--dv3-accent) !important;
    text-align: left;
  }

  #desktopV3SourceHost .add-source-icon {
    grid-column: 1 !important;
    grid-row: 1 !important;
    width: 1.8rem !important;
    height: 1.8rem !important;
    min-width: 1.8rem !important;
    min-height: 1.8rem !important;
  }

  #desktopV3SourceHost .add-source-trigger > b {
    grid-column: 2 !important;
    grid-row: 1 !important;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  #desktopV3SourceHost .source-current-list {
    display: grid !important;
    gap: 0.35rem;
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0;
    min-height: 0 !important;
    overflow: hidden !important;
  }

  #desktopV3SourceHost .source-current-list > span {
    color: #7b8495;
    font-size: 0.6rem;
    font-weight: 800;
  }

  #desktopV3SourceHost .source-cards {
    display: grid !important;
    gap: 0.35rem !important;
    min-width: 0 !important;
    min-height: 0 !important;
    max-height: 100% !important;
    overflow-x: hidden !important;
    overflow-y: auto !important;
  }

  #desktopV3SourceHost .source-card-chip,
  #desktopV3SourceHost .source-loading-chip {
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) auto;
    width: 100% !important;
    max-width: none !important;
    padding: 0.5rem !important;
    border-radius: 0.65rem !important;
    background: #f5f7fa !important;
  }

  #desktopV3SourceHost .source-card-chip > span {
    overflow: hidden;
    font-size: 0.65rem;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .dv3-ask-card {
    display: grid;
    gap: 0.5rem;
    padding: 0.75rem;
    border: 1px solid #e1e6ed;
    border-radius: 0.85rem;
    background: #fafbfc;
  }

  .dv3-ask-card textarea {
    width: 100%;
    min-height: 4.6rem;
    resize: vertical;
    padding: 0.6rem;
    border: 1px solid #dfe4ec;
    border-radius: 0.65rem;
    background: #fff;
    color: var(--dv3-ink);
    font: 500 0.7rem/1.4 Inter, sans-serif;
  }

  .dv3-ask-card textarea:focus {
    border-color: var(--dv3-accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--dv3-accent) 10%, transparent);
    outline: 0;
  }

  .dv3-ask-card button {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    justify-content: space-between;
    min-height: 2.3rem;
    padding: 0.5rem 0.65rem;
    border: 0;
    border-radius: 0.65rem;
    background: var(--dv3-accent);
    color: #fff;
    font-size: 0.68rem;
    font-weight: 850;
    cursor: pointer;
  }

  .dv3-trust-note {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 0.5rem;
    align-items: start;
    color: #667085;
    font-size: 0.62rem;
  }

  .dv3-trust-note > span {
    display: grid;
    width: 1.4rem;
    height: 1.4rem;
    place-items: center;
    border-radius: 999px;
    background: #e9f8ef;
    color: #278450;
    font-weight: 900;
  }

  .dv3-trust-note p {
    margin: 0;
    line-height: 1.4;
  }

  body.dv3-assistant-collapsed .desktop-studio-v3 {
    grid-template-columns: 15rem minmax(0, 1fr);
  }

  body.dv3-assistant-collapsed .dv3-assistant {
    display: none;
  }

  .dv3-workspace-host {
    padding: 0.9rem;
  }

  .dv3-workspace-host > #sourceToolsPanel {
    display: block !important;
    position: static !important;
    width: 100% !important;
    max-width: none !important;
    min-height: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
    border: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
    transform: none !important;
  }

  .dv3-workspace-host .studio-right-rail {
    display: none !important;
  }

  .dv3-workspace-host .generator-panel,
  .dv3-workspace-host #sourceChatPanel,
  .dv3-workspace-host #toolWaitCard,
  .dv3-workspace-host #studioProgressPanel {
    position: static !important;
    inset: auto !important;
    width: 100% !important;
    max-width: none !important;
    min-height: 0 !important;
    max-height: none !important;
    margin: 0 !important;
    padding: 1rem !important;
    overflow: visible !important;
    border: 1px solid var(--dv3-line) !important;
    border-radius: 1rem !important;
    background: #fff !important;
    box-shadow: var(--dv3-shadow) !important;
    transform: none !important;
    animation: none !important;
  }

  .dv3-workspace-host .generator-panel.tools-hidden,
  .dv3-workspace-host #sourceChatPanel.tools-hidden,
  .dv3-workspace-host #toolWaitCard.tools-hidden,
  .dv3-workspace-host #studioProgressPanel.tools-hidden {
    display: none !important;
  }

  .dv3-workspace-host .dv3-workspace-header {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 0.75rem;
    align-items: center;
    margin: -0.2rem -0.2rem 0.9rem;
    padding: 0.2rem 0.2rem 0.8rem;
    border-bottom: 1px solid var(--dv3-line);
  }

  .dv3-workspace-header > button {
    min-height: 2.2rem;
    padding: 0.45rem 0.65rem;
    border: 1px solid #dfe4ec;
    border-radius: 0.62rem;
    background: #fff;
    color: #536078;
    font-size: 0.68rem;
    font-weight: 800;
    cursor: pointer;
  }

  .dv3-workspace-header > button:last-child {
    border-color: transparent;
    background: var(--dv3-accent);
    color: #fff;
  }

  .dv3-workspace-header > div {
    display: grid;
    gap: 0.05rem;
    min-width: 0;
  }

  .dv3-workspace-header > div span {
    color: var(--dv3-muted);
    font-size: 0.62rem;
  }

  .dv3-workspace-header > div strong {
    overflow: hidden;
    color: var(--dv3-ink);
    font-size: 0.85rem;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .dv3-workspace-host .guided-tool-strip {
    display: none !important;
  }

  .dv3-special-view {
    outline: 0;
  }

  .dv3-special-head {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    justify-content: space-between;
    padding: 1rem;
    border: 1px solid var(--dv3-line);
    border-radius: 1rem;
    background:
      radial-gradient(circle at 90% 5%, color-mix(in srgb, var(--dv3-accent) 12%, transparent), transparent 35%),
      #fff;
  }

  .dv3-subject-list-large {
    margin-top: 1rem;
    padding: 1rem;
    border: 1px solid var(--dv3-line);
    border-radius: 1rem;
    background: #fff;
  }

  .dv3-space-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.65rem;
  }

  .dv3-space-card {
    display: grid;
    grid-template-columns: 2.4rem minmax(0, 1fr) auto;
    gap: 0.65rem;
    align-items: center;
    min-width: 0;
    padding: 0.7rem;
    border: 1px solid #e1e6ed;
    border-radius: 0.78rem;
    background: #fafbfc;
    color: var(--dv3-ink);
    text-align: left;
    cursor: pointer;
  }

  .dv3-space-card > span:first-child {
    display: grid;
    width: 2.4rem;
    height: 2.4rem;
    place-items: center;
    border-radius: 0.68rem;
    background: color-mix(in srgb, var(--dv3-accent) 12%, #fff);
    color: var(--dv3-accent);
    font-weight: 900;
  }

  .dv3-space-card > span:nth-child(2) {
    display: grid;
    min-width: 0;
    gap: 0.1rem;
  }

  .dv3-space-card strong,
  .dv3-space-card small {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .dv3-space-card strong {
    font-size: 0.74rem;
  }

  .dv3-space-card small {
    color: var(--dv3-muted);
    font-size: 0.62rem;
  }

  .dv3-empty {
    grid-column: 1 / -1;
    padding: 1.25rem;
    border: 1px dashed #d5dce7;
    border-radius: 0.8rem;
    color: var(--dv3-muted);
    text-align: center;
  }

  .dv3-empty strong {
    color: var(--dv3-ink);
  }

  .dv3-empty p {
    margin: 0.3rem 0 0;
    font-size: 0.72rem;
  }

  .dv3-join-class {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.15rem 0.8rem;
    margin-top: 1rem;
    padding: 0.9rem 1rem;
    border: 1px solid #dfe4ec;
    border-radius: 0.9rem;
    background: #fff;
    color: var(--dv3-ink);
    text-decoration: none;
  }

  .dv3-join-class span {
    color: var(--dv3-accent);
    font-size: 0.64rem;
    font-weight: 850;
  }

  .dv3-join-class strong {
    font-size: 0.8rem;
  }

  .dv3-join-class b {
    grid-column: 2;
    grid-row: 1 / 3;
    align-self: center;
  }

  .dv3-action-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    margin-top: 1rem;
  }

  .dv3-action-grid > a,
  .dv3-action-grid > button {
    display: grid;
    grid-template-columns: 2.5rem minmax(0, 1fr);
    grid-template-rows: auto auto;
    gap: 0.12rem 0.65rem;
    align-items: center;
    min-height: 5rem;
    padding: 0.8rem;
    border: 1px solid #e1e6ed;
    border-radius: 0.85rem;
    background: #fff;
    color: var(--dv3-ink);
    text-align: left;
    text-decoration: none;
    cursor: pointer;
  }

  .dv3-action-grid > * > span:first-child {
    grid-row: 1 / 3;
  }

  .dv3-action-grid strong {
    align-self: end;
    font-size: 0.77rem;
  }

  .dv3-action-grid small {
    align-self: start;
    color: var(--dv3-muted);
    font-size: 0.64rem;
    line-height: 1.35;
  }

  .dv3-teacher-invite {
    margin-top: 1rem;
  }

  .dv3-teacher-invite > p {
    margin: 0.5rem 0 0;
    color: var(--dv3-muted);
    font-size: 0.68rem;
    line-height: 1.45;
  }

  .dv3-teacher-invite form {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr) minmax(0, 1fr) auto;
    gap: 0.65rem;
    align-items: end;
    margin-top: 0.85rem;
  }

  .dv3-teacher-invite label {
    display: grid;
    gap: 0.3rem;
    min-width: 0;
  }

  .dv3-teacher-invite label > span {
    color: #59657a;
    font-size: 0.62rem;
    font-weight: 800;
  }

  .dv3-teacher-invite input,
  .dv3-teacher-invite select {
    width: 100%;
    min-height: 2.4rem;
    padding: 0.55rem 0.65rem;
    border: 1px solid #dce2eb;
    border-radius: 0.65rem;
    background: #fff;
    color: var(--dv3-ink);
    font: inherit;
    font-size: 0.68rem;
  }

  .dv3-teacher-invite form > button,
  #dv3TeacherInviteResult button {
    min-height: 2.4rem;
    padding: 0.55rem 0.75rem;
    border: 0;
    border-radius: 0.65rem;
    background: var(--dv3-accent);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 850;
    cursor: pointer;
  }

  .dv3-teacher-invite :disabled {
    cursor: not-allowed;
    opacity: 0.55;
  }

  #dv3TeacherInviteResult:not(:empty) {
    display: grid;
    gap: 0.35rem;
    margin-top: 0.75rem;
    padding: 0.7rem;
    border: 1px solid #cce9df;
    border-radius: 0.7rem;
    background: #f2fbf7;
    color: #235d4d;
    font-size: 0.65rem;
  }

  #dv3TeacherInviteResult p {
    margin: 0;
    line-height: 1.4;
  }

  #dv3TeacherInviteResult > div {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.5rem;
  }

  #dv3TeacherInviteResult input {
    min-width: 0;
  }

  .dv3-pack-steps,
  .dv3-help-steps {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
    margin: 1rem 0 0;
    padding: 0;
    list-style: none;
  }

  .dv3-pack-steps article,
  .dv3-help-steps li {
    display: grid;
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: 0.55rem;
    align-items: center;
    padding: 0.75rem;
    border: 1px solid #e1e6ed;
    border-radius: 0.8rem;
    background: #fff;
  }

  .dv3-pack-steps b,
  .dv3-help-steps b {
    display: grid;
    width: 2rem;
    height: 2rem;
    place-items: center;
    border-radius: 999px;
    background: #edf0f5;
    color: #7b8495;
    font-size: 0.7rem;
  }

  .dv3-pack-steps .is-current b,
  .dv3-pack-steps .is-complete b,
  .dv3-help-steps b {
    background: var(--dv3-accent);
    color: #fff;
  }

  .dv3-pack-steps span,
  .dv3-help-steps span {
    display: grid;
    gap: 0.08rem;
  }

  .dv3-pack-steps strong,
  .dv3-help-steps strong {
    font-size: 0.72rem;
  }

  .dv3-pack-steps small,
  .dv3-help-steps small {
    color: var(--dv3-muted);
    font-size: 0.61rem;
    line-height: 1.35;
  }

  .dv3-help-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .dv3-command-palette {
    position: fixed;
    z-index: 10010;
    inset: 0;
    display: grid;
    align-items: start;
    justify-items: center;
    padding: 10vh 1rem 1rem;
  }

  .dv3-command-palette[hidden] {
    display: none !important;
  }

  .dv3-command-backdrop {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(6px);
  }

  .dv3-command-palette > section {
    position: relative;
    width: min(38rem, 100%);
    max-height: 72vh;
    overflow: hidden;
    border: 1px solid #dfe4ec;
    border-radius: 1rem;
    background: #fff;
    box-shadow: 0 30px 80px rgba(15, 23, 42, 0.3);
  }

  .dv3-command-palette label {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 0.65rem;
    align-items: center;
    padding: 0.8rem 0.9rem;
    border-bottom: 1px solid #e4e8ef;
  }

  .dv3-command-palette input {
    min-height: 2.2rem;
    border: 0;
    color: var(--dv3-ink);
    font: 600 0.85rem/1.2 Inter, sans-serif;
    outline: 0;
  }

  #dv3CommandResults {
    display: grid;
    gap: 0.25rem;
    max-height: 52vh;
    padding: 0.55rem;
    overflow: auto;
  }

  #dv3CommandResults > button {
    display: grid;
    grid-template-columns: 2rem minmax(0, 1fr) auto;
    gap: 0.65rem;
    align-items: center;
    min-width: 0;
    padding: 0.55rem 0.65rem;
    border: 0;
    border-radius: 0.65rem;
    background: #fff;
    color: var(--dv3-ink);
    text-align: left;
    cursor: pointer;
  }

  #dv3CommandResults > button.is-selected,
  #dv3CommandResults > button:hover {
    background: color-mix(in srgb, var(--dv3-accent) 8%, #fff);
  }

  #dv3CommandResults > button > span:first-child {
    display: grid;
    width: 2rem;
    height: 2rem;
    place-items: center;
    border-radius: 0.55rem;
    background: #edf0f5;
    color: #5d687b;
    font-weight: 900;
  }

  #dv3CommandResults > button > span:nth-child(2) {
    display: grid;
    min-width: 0;
    gap: 0.08rem;
  }

  #dv3CommandResults strong,
  #dv3CommandResults small {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  #dv3CommandResults strong {
    font-size: 0.72rem;
  }

  #dv3CommandResults small {
    color: var(--dv3-muted);
    font-size: 0.62rem;
  }

  .dv3-command-palette footer {
    display: flex;
    gap: 0.8rem;
    justify-content: flex-end;
    padding: 0.55rem 0.75rem;
    border-top: 1px solid #e4e8ef;
    color: #7b8495;
    font-size: 0.58rem;
  }

  .dv3-command-palette footer span {
    display: flex;
    gap: 0.25rem;
    align-items: center;
  }

  .dv3-notice {
    position: fixed;
    z-index: 10030;
    right: 1rem;
    bottom: 1rem;
    max-width: 26rem;
    padding: 0.75rem 0.9rem;
    border: 1px solid #cce9df;
    border-radius: 0.75rem;
    background: #effaf6;
    color: #236653;
    box-shadow: 0 15px 40px rgba(15, 23, 42, 0.17);
    font-size: 0.7rem;
    font-weight: 750;
  }

  .dv3-notice.is-error {
    border-color: #f5cbc7;
    background: #fff3f2;
    color: #a82c24;
  }

  body.dv3-modal-open {
    overflow: hidden;
  }

  body.desktop-studio-v3-active #creationsPage {
    min-height: 100dvh;
    padding: 1.5rem;
    background: var(--dv3-bg);
  }

  @media (max-width: 1220px) {
    .desktop-studio-v3 {
      grid-template-columns: 13rem minmax(0, 1fr) 18rem;
    }

    body.dv3-assistant-collapsed .desktop-studio-v3 {
      grid-template-columns: 13rem minmax(0, 1fr);
    }

    .dv3-topbar {
      grid-template-columns: minmax(0, 1fr) auto auto;
      gap: 0.65rem;
    }

    .dv3-command {
      display: none;
    }

    .dv3-goal-grid {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .dv3-home-grid {
      grid-template-columns: 1fr;
    }

    .dv3-teacher-invite form {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }
  }

  @media (max-width: 1020px) {
    .desktop-studio-v3,
    body.dv3-assistant-collapsed .desktop-studio-v3 {
      grid-template-columns: 5.2rem minmax(0, 1fr);
    }

    .dv3-assistant {
      position: fixed;
      z-index: 30;
      top: 0;
      right: 0;
      bottom: 0;
      width: min(20rem, 42vw);
      box-shadow: -20px 0 55px rgba(15, 23, 42, 0.16);
    }

    body.dv3-assistant-collapsed .dv3-assistant {
      display: none;
    }

    .dv3-sidebar {
      justify-items: center;
      padding-right: 0.55rem;
      padding-left: 0.55rem;
    }

    .dv3-brand > span,
    .dv3-nav button b,
    .dv3-nav button em,
    .dv3-side-help,
    .dv3-profile > span:nth-child(2),
    .dv3-profile > b {
      display: none;
    }

    .dv3-brand,
    .dv3-profile {
      display: grid;
      grid-template-columns: 1fr;
      place-items: center;
      width: 3.2rem;
    }

    .dv3-profile-wrap {
      width: 3.2rem;
    }

    .dv3-profile-menu {
      left: 0;
    }

    .dv3-mode-switch {
      grid-template-columns: 1fr;
      width: 3.2rem;
    }

    .dv3-mode-switch button {
      min-width: 0;
      padding: 0;
      font-size: 0.65rem;
    }

    .dv3-nav button {
      grid-template-columns: 1fr;
      place-items: center;
      width: 3.2rem;
      padding: 0.45rem;
    }

    .dv3-topbar {
      grid-template-columns: minmax(8rem, 0.7fr) minmax(12rem, 1fr) auto;
    }
  }

  @media (max-width: 860px) {
    .dv3-topbar {
      grid-template-columns: minmax(0, 1fr) auto auto;
    }

    .dv3-command {
      display: none;
    }

    .dv3-goal-grid,
    .dv3-action-grid,
    .dv3-space-grid,
    .dv3-pack-steps,
    .dv3-help-steps {
      grid-template-columns: 1fr;
    }

    .dv3-home,
    .dv3-special-view {
      padding: 1rem;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    .desktop-studio-v3 *,
    .dv3-command-palette * {
      scroll-behavior: auto !important;
      transition: none !important;
    }
  }
}