.hub.is-tutorial .stack-left,
.hub.is-tutorial .avatar-rail {
  display: none;
}

.hub.is-tutorial .hub-stage {
  grid-template-columns: minmax(0, 1fr);
  padding: 4px 10px 6px 4px;
}

.tab-panel[data-panel="tutorial"].is-on {
  display: flex;
}

#tutorial-root,
.tu {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tu-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-shrink: 0;
}

.tu-head span {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.tu-head h2 {
  font-family: var(--font-brand);
  font-size: 36px;
  line-height: 0.95;
}

.tu-head b {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.tu-tools {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex-shrink: 0;
}

.tu-search {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 14px;
  height: 44px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(18px);
}

.tu-search svg {
  width: 16px;
  height: 16px;
  color: var(--accent);
  flex-shrink: 0;
}

.tu-search input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: none;
  color: #fff;
  font-family: inherit;
  font-size: 13px;
  outline: none;
}

.tu-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tu-cats button {
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(12, 12, 16, 0.35);
  color: rgba(255, 255, 255, 0.7);
  border-radius: 999px;
  padding: 6px 12px;
  font-family: inherit;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
}

.tu-cats button.is-on {
  color: #111;
  background: var(--accent);
  border-color: transparent;
  box-shadow: 0 0 16px rgba(3, 252, 182, 0.35);
}

.tu-grid {
  flex: 1;
  min-height: 0;
  overflow: auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  align-content: start;
}

.tu-card {
  position: relative;
  min-height: 210px;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(22px) saturate(170%);
  overflow: hidden;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.tu-card:hover {
  border-color: rgba(3, 252, 182, 0.45);
  transform: translateY(-3px);
  transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.28s;
}

.tu-cover {
  position: absolute;
  inset: 0;
  background: center / cover no-repeat;
}

.tu-cover-empty {
  background:
    radial-gradient(circle at 70% 20%, rgba(3, 252, 182, 0.18), transparent 42%),
    linear-gradient(180deg, rgba(20, 20, 28, 0.2), rgba(8, 8, 12, 0.85));
}

.tu-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 8, 12, 0.05) 20%, rgba(8, 8, 12, 0.88));
}

.tu-tag {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 2;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(3, 252, 182, 0.18);
  color: var(--accent);
  border: 1px solid rgba(3, 252, 182, 0.35);
}

.tu-x {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 3;
  width: 26px;
  height: 26px;
  border: 0;
  border-radius: 8px;
  background: rgba(8, 8, 12, 0.55);
  color: #fff;
  cursor: pointer;
  opacity: 0.75;
}

.tu-card:hover .tu-x {
  opacity: 1;
}

.tu-card-body {
  position: relative;
  z-index: 1;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.tu-card-body b {
  font-size: 17px;
  text-shadow: 0 8px 16px #000;
}

.tu-card-body p {
  margin: 0;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.72);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tu-card-body em {
  font-style: normal;
  font-size: 11px;
  color: var(--mute);
}

.tu-empty {
  grid-column: 1 / -1;
  min-height: 220px;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(22px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.55);
}

.tu-empty em {
  margin-top: 6px;
  font-style: normal;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mute);
}

.tu-admin {
  flex-shrink: 0;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(12, 12, 16, 0.4);
  padding: 8px 12px;
}

.tu-admin summary {
  cursor: pointer;
  font-size: 12px;
  color: var(--mute);
}

.tu-form {
  display: grid;
  grid-template-columns: 1.4fr 120px 1fr 1fr;
  gap: 8px;
  margin-top: 10px;
}

.tu-form textarea {
  grid-column: 1 / -2;
}

.tu-form button {
  grid-column: -2 / -1;
  align-self: stretch;
}

.tu-form input,
.tu-form select,
.tu-form textarea,
.tu-form button {
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 10px;
  background: rgba(12, 12, 16, 0.45);
  color: #fff;
  padding: 8px 10px;
  font-family: inherit;
  font-size: 12px;
}

.tu-form button {
  background: #fff;
  color: #111;
  font-weight: 650;
  border: 0;
  cursor: pointer;
}

.tu-read {
  position: absolute;
  inset: 0;
  z-index: 8;
  border-radius: 20px;
  overflow: hidden;
  background: rgba(8, 8, 12, 0.78);
  backdrop-filter: blur(22px);
  display: flex;
  flex-direction: column;
}

.tu-read[hidden] {
  display: none !important;
}

.tu-close {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 2;
  border: 0;
  border-radius: 10px;
  padding: 7px 12px;
  font-family: inherit;
  background: #fff;
  color: #111;
  cursor: pointer;
}

.tu-read-body {
  flex: 1;
  overflow: auto;
}

.tu-hero {
  height: 180px;
  background: center / cover no-repeat;
}

.tu-read-body header {
  padding: 22px 28px 8px;
}

.tu-read-body header span {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.tu-read-body h3 {
  margin: 6px 0 4px;
  font-family: var(--font-brand);
  font-size: 34px;
}

.tu-prose {
  padding: 8px 28px 28px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.86);
  max-width: 720px;
}

.tu-prose p {
  margin: 0 0 14px;
}

.tu-ext {
  display: inline-block;
  margin: 0 28px 28px;
  color: #111;
  background: var(--accent);
  text-decoration: none;
  border: 0;
  border-radius: 10px;
  padding: 8px 14px;
  font: inherit;
  font-size: 12px;
  font-weight: 650;
  cursor: pointer;
}