/* 新手引导蒙层（轻量、可关闭、可"不再展示"） */
.onb-mask {
  position:fixed; inset:0; z-index:200;
  background:rgba(4,4,8,0.78);
  display:none;
  align-items:center; justify-content:center;
  padding:20px;
}
.onb-mask.open { display:flex; }
.onb-card {
  width:min(420px, 100%);
  background:var(--bg-elevated);
  border:1px solid var(--border-strong);
  border-radius:24px;
  padding:24px 22px 18px;
  box-shadow:0 30px 60px rgba(0,0,0,0.5);
  position:relative;
}
.onb-card .step-tag {
  display:inline-flex; align-items:center; gap:6px;
  padding:4px 10px; border-radius:999px;
  background:var(--accent-grad-soft);
  font-size:11px; color:var(--text-secondary);
  margin-bottom:12px;
}
.onb-card h3 { margin:0 0 8px; font-size:18px; }
.onb-card p { margin:0; color:var(--text-secondary); line-height:1.75; font-size:13px; }
.onb-illust {
  margin:14px 0 16px;
  height:96px; border-radius:14px;
  background:
    radial-gradient(circle at 30% 30%, rgba(232, 215, 222,0.30), transparent 60%),
    radial-gradient(circle at 75% 70%, rgba(232, 215, 222,0.24), transparent 60%),
    rgba(255,255,255,0.02);
  display:grid; place-items:center;
  font-size:38px; color:#fff;
}
.onb-actions {
  display:flex; align-items:center; gap:10px; margin-top:14px;
}
.onb-actions .progress {
  display:flex; gap:6px; flex:1;
}
.onb-actions .progress span {
  width:18px; height:4px; border-radius:2px;
  background:rgba(255,255,255,0.16);
}
.onb-actions .progress span.active { background:var(--accent-grad); }
.onb-actions button { padding:8px 16px; }
.onb-skip-row {
  display:flex; justify-content:space-between; align-items:center;
  margin-top:14px; padding-top:12px;
  border-top:1px solid var(--border);
  font-size:12px;
}
.onb-skip-row label {
  display:inline-flex; align-items:center; gap:6px;
  color:var(--text-secondary); cursor:pointer;
}
.onb-skip-row a {
  color:var(--text-dim); cursor:pointer; text-decoration:underline;
}