.tutorial-page{
  padding: 0 16px 64px;
  max-width: 980px;
  margin: 0 auto;
}

.tutorial-hero{
  text-align:center;
  padding: 48px 0 34px;
}
.tutorial-title{
  font-size: 36px;
  font-weight: 900;
  color: hsl(var(--fg));
  margin: 0 0 14px;
}
.tutorial-subtitle{
  font-size: 16px;
  color: hsl(var(--text-secondary));
  margin: 0;
}

.tutorial-list{ display:flex; flex-direction:column; gap: 18px; }

.tutorial-item{
  background: #fff;
  border: 1px solid hsl(var(--border));
  border-radius: 18px;
  padding: 22px;
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.06);
}
.tutorial-item-head{
  display:flex;
  align-items:flex-start;
  gap: 14px;
  margin-bottom: 14px;
}
.tutorial-item-no{
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background: #111827;
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight: 900;
  font-size: 14px;
  flex: 0 0 auto;
}
.tutorial-item-title{
  font-size: 16px;
  font-weight: 900;
  color: #111827;
  margin: 0 0 4px;
}
.tutorial-item-desc{
  font-size: 13px;
  line-height: 1.75;
  color: #6b7280;
}

.tutorial-video{
  border-radius: 16px;
  overflow:hidden;
  border: 1px solid #e5e7eb;
  background: #0b0f19;
  aspect-ratio: 16 / 9;
}
.tutorial-iframe{
  width: 100%;
  height: 100%;
  display:block;
  background: #0b0f19;
}

.tutorial-quick{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.tutorial-quick-card{
  display:flex;
  align-items:center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid hsl(var(--border));
  background: hsl(var(--card));
  text-decoration: none;
  color: inherit;
  transition: box-shadow .18s, transform .18s, background .18s;
}
.tutorial-quick-card:hover{
  background: #fff;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
  transform: translateY(-1px);
}
.tutorial-quick-icon{
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: hsl(var(--secondary));
  display:flex;
  align-items:center;
  justify-content:center;
  color: hsl(var(--fg));
  flex: 0 0 auto;
}
.tutorial-quick-meta{ flex:1; min-width: 0; }
.tutorial-quick-title{
  font-size: 14px;
  font-weight: 900;
  color: #111827;
  margin: 0 0 2px;
}
.tutorial-quick-desc{
  font-size: 12px;
  color: #6b7280;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tutorial-quick-arrow{ color:#9ca3af; flex: 0 0 auto; }

@media (max-width: 820px){
  .tutorial-quick{ grid-template-columns: 1fr; }
}