/* I75 · 学路径零基础三屏 onboarding */
.ob-overlay {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px 16px;
  background: rgba(28, 25, 23, 0.55);
  backdrop-filter: blur(4px);
}
.ob-overlay[hidden] {
  display: none !important;
}
.ob-card {
  position: relative;
  width: min(420px, 100%);
  max-height: min(92vh, 640px);
  overflow: auto;
  padding: 28px 22px 22px;
  border-radius: 20px;
  background: #fff;
  color: #1c1917;
  box-shadow: 0 18px 48px rgba(28, 25, 23, 0.22);
  font-family: "Fredoka", "Segoe UI", sans-serif;
}
.ob-skip {
  position: absolute;
  top: 12px;
  right: 12px;
  border: none;
  background: transparent;
  color: #78716c;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 8px;
}
.ob-skip:hover {
  color: #ea580c;
  background: #fff7ed;
}
.ob-step {
  display: none;
}
.ob-step.is-active {
  display: block;
}
.ob-kicker {
  margin: 0 0 6px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #a855f7;
  text-transform: uppercase;
}
.ob-card h2 {
  margin: 0 0 12px;
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.3;
  color: #1c1917;
}
.ob-card p {
  margin: 0 0 14px;
  font-size: 1rem;
  line-height: 1.55;
  color: #44403c;
}
.ob-staff {
  margin: 8px 0 18px;
  padding: 14px 12px 10px;
  border-radius: 14px;
  background: #faf5ff;
  border: 1px solid #e9d5ff;
}
.ob-staff svg {
  display: block;
  width: 100%;
  height: auto;
}
.ob-staff-caption {
  margin: 8px 0 0;
  font-size: 0.82rem;
  color: #78716c;
  text-align: center;
}
.ob-list {
  margin: 0 0 18px;
  padding: 0 0 0 1.15em;
  font-size: 0.98rem;
  line-height: 1.55;
  color: #44403c;
}
.ob-list li {
  margin-bottom: 6px;
}
.ob-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 4px 0 16px;
}
.ob-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #e7e5e4;
}
.ob-dot.is-on {
  background: #a855f7;
}
.ob-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}
.ob-btn {
  font: inherit;
  font-weight: 700;
  border: none;
  border-radius: 999px;
  padding: 12px 20px;
  cursor: pointer;
}
.ob-btn-primary {
  background: #ea580c;
  color: #fff;
}
.ob-btn-primary:hover {
  background: #c2410c;
}