.nav-group {
  display: grid;
  gap: 5px;
  padding: 10px 0;
  border-top: 1px solid rgba(255,255,255,.12);
}

.nav-group:first-child {
  padding-top: 0;
  border-top: 0;
}

.nav-group-label {
  padding: 0 12px 3px;
  color: #8fbdb5;
  font: 700 10px/1.4 system-ui, sans-serif;
  letter-spacing: .18em;
}

.nav-group-guide button {
  color: #ffe2a7;
  background: rgba(183,134,47,.12);
}

.experience-step {
  border-color: rgba(183,134,47,.24);
  background: linear-gradient(145deg, rgba(255,255,255,.94), rgba(250,246,234,.88));
}

.experience-step .step-number {
  background: #9a6d20;
}

.experience-heading {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
}

.experience-kicker {
  margin-bottom: 5px;
  color: #9a6d20;
  font: 800 10px/1.4 system-ui, sans-serif;
  letter-spacing: .18em;
}

.experience-chip {
  flex: 0 0 auto;
  padding: 7px 10px;
  border: 1px solid rgba(183,134,47,.32);
  border-radius: 999px;
  color: #745317;
  background: #fff7e4;
  font: 700 11px/1 system-ui, sans-serif;
}

.experience-chip.guide {
  color: #0b5a51;
  border-color: rgba(13,106,95,.28);
  background: #e6f3f0;
}

.intro-player {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, .75fr);
  gap: 16px;
  margin-top: 18px;
  padding: 14px;
  border: 1px solid rgba(20,44,43,.12);
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 12px 34px rgba(31,54,51,.09);
}

.intro-visual {
  position: relative;
  min-height: 330px;
  overflow: hidden;
  border-radius: 14px;
  background: linear-gradient(135deg, #0a5149, #102f2d);
}

.intro-visual img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 330px;
  object-fit: contain;
  background: #edf0ea;
}

.intro-chapter-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 7px 10px;
  border-radius: 999px;
  color: #fff;
  background: rgba(8,44,41,.78);
  backdrop-filter: blur(8px);
  font: 700 11px/1 system-ui, sans-serif;
}

.intro-console {
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
  padding: 8px 4px 4px;
}

.intro-copy h3 {
  margin: 0 0 8px;
  font-size: 22px;
}

.intro-copy > p {
  margin-bottom: 12px;
}

.intro-transcript {
  min-height: 98px;
  padding: 12px;
  border-left: 3px solid #b7862f;
  border-radius: 0 10px 10px 0;
  color: #435754;
  background: #faf7ef;
  font: 13px/1.75 system-ui, sans-serif;
}

.intro-audio-wrap audio {
  width: 100%;
}

.intro-controls {
  display: grid;
  grid-template-columns: auto 1fr auto minmax(92px, auto);
  gap: 8px;
  align-items: end;
}

.intro-controls label {
  min-width: 92px;
}

.intro-controls select {
  padding: 8px;
}

.intro-progress,
.guide-dashboard-progress > div {
  height: 7px;
  overflow: hidden;
  border-radius: 999px;
  background: #e5e9e3;
}

.intro-progress span,
#guide-progress-bar {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #0d6a5f, #b7862f);
  transition: width .25s ease;
}

.intro-status {
  color: #6b7d79;
  font: 11px/1.5 system-ui, sans-serif;
}

.intro-chapters {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.intro-chapters button {
  width: 100%;
  min-height: 58px;
  padding: 9px 10px;
  border: 1px solid #d9ded7;
  border-radius: 10px;
  color: #526562;
  background: #fff;
  text-align: left;
  cursor: pointer;
  font: 12px/1.4 system-ui, sans-serif;
}

.intro-chapters button:hover,
.intro-chapters button[aria-current="true"] {
  color: #084a43;
  border-color: #0d6a5f;
  background: #e9f4f1;
}

.guide-scenarios {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 16px;
}

.guide-scenario-card {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  min-height: 112px;
  padding: 14px;
  border: 1px solid #d9ded7;
  border-radius: 14px;
  color: #526562;
  background: #fff;
  cursor: pointer;
}

.guide-scenario-card:has(input:checked) {
  border-color: #0d6a5f;
  box-shadow: 0 0 0 3px rgba(13,106,95,.09);
  background: #f3faf8;
}

.guide-scenario-card input {
  width: auto;
  margin-top: 2px;
}

.guide-scenario-card strong,
.guide-scenario-card small {
  display: block;
}

.guide-scenario-card strong {
  margin-bottom: 7px;
  color: #142c2b;
  font-size: 14px;
}

.guide-scenario-card small {
  font: 12px/1.6 system-ui, sans-serif;
}

.guide-scenario-card em {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 4px 7px;
  border-radius: 999px;
  color: #745317;
  background: #f5e7c6;
  font: 700 10px/1 system-ui, sans-serif;
  font-style: normal;
}

.guide-auto-option {
  display: flex;
  grid-template-columns: none;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
}

.guide-auto-option input {
  width: auto;
}

.guide-dashboard {
  display: grid;
  grid-template-columns: 1fr minmax(220px, .45fr);
  gap: 20px;
  align-items: center;
  margin-top: 12px;
  padding: 16px;
  border: 1px solid rgba(13,106,95,.16);
  border-radius: 14px;
  background: rgba(233,244,241,.72);
}

.guide-dashboard-label {
  display: block;
  margin-bottom: 4px;
  color: #64807b;
  font: 700 10px/1.4 system-ui, sans-serif;
  letter-spacing: .12em;
}

.guide-dashboard strong {
  font: 700 17px/1.4 system-ui, sans-serif;
}

.guide-dashboard p {
  margin: 4px 0 0;
}

.guide-dashboard-progress {
  display: grid;
  gap: 7px;
  color: #526562;
  text-align: right;
  font: 700 12px/1 system-ui, sans-serif;
}

.guide-principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 14px;
}

.guide-principles > div {
  padding: 12px;
  border-radius: 11px;
  background: #fff;
}

.guide-principles strong,
.guide-principles span {
  display: block;
}

.guide-principles strong {
  margin-bottom: 4px;
  color: #0d6a5f;
  font: 700 12px/1.4 system-ui, sans-serif;
}

.guide-principles span {
  color: #647674;
  font: 11px/1.55 system-ui, sans-serif;
}

.guide-spotlight {
  position: fixed;
  z-index: 9000;
  display: none;
  border: 3px solid #f1c86e;
  border-radius: 13px;
  box-shadow: 0 0 0 9999px rgba(6,25,24,.62), 0 0 0 6px rgba(241,200,110,.2);
  pointer-events: none;
  transition: inset .2s ease, width .2s ease, height .2s ease;
}

.guide-spotlight.visible {
  display: block;
}

.guide-tooltip {
  position: fixed;
  z-index: 9010;
  display: none;
  width: min(380px, calc(100vw - 24px));
  padding: 17px;
  border: 1px solid rgba(241,200,110,.45);
  border-radius: 16px;
  color: #eef8f6;
  background: #083f3a;
  box-shadow: 0 20px 65px rgba(0,0,0,.32);
  font-family: system-ui, sans-serif;
}

.guide-tooltip.visible {
  display: block;
}

.guide-tooltip-progress {
  color: #b8d6d1;
  font: 700 10px/1.3 system-ui, sans-serif;
  letter-spacing: .12em;
}

.guide-tooltip h3 {
  margin: 7px 0 8px;
  color: #fff;
  font-size: 18px;
}

.guide-tooltip p {
  margin: 0 0 9px;
  color: #d3e6e2;
  font: 13px/1.65 system-ui, sans-serif;
}

.guide-tooltip .guide-why {
  padding: 9px 10px;
  border-radius: 9px;
  color: #f8e4b8;
  background: rgba(183,134,47,.16);
}

.guide-tooltip .guide-waiting {
  color: #9dc9c1;
  font-size: 11px;
}

.guide-tooltip-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 12px;
}

.guide-tooltip button {
  border: 0;
  border-radius: 9px;
  padding: 9px 11px;
  color: #083f3a;
  background: #f3d99e;
  cursor: pointer;
  font: 700 12px/1 system-ui, sans-serif;
}

.guide-tooltip button.secondary {
  color: #e4f2ef;
  background: rgba(255,255,255,.12);
}

.guide-tooltip button:disabled {
  opacity: .5;
  cursor: wait;
}

.guide-target-pulse {
  animation: guide-pulse 1.4s ease-in-out infinite;
}

@keyframes guide-pulse {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.14); }
}

@media (max-width: 1050px) {
  .intro-player { grid-template-columns: 1fr; }
  .intro-chapters { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .guide-scenarios { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  .experience-heading { display: grid; }
  .experience-chip { justify-self: start; }
  .intro-visual,
  .intro-visual img { min-height: 220px; }
  .intro-controls { grid-template-columns: repeat(3, 1fr); }
  .intro-controls label { grid-column: 1 / -1; }
  .guide-dashboard { grid-template-columns: 1fr; }
  .guide-dashboard-progress { text-align: left; }
  .guide-principles { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .intro-progress span,
  #guide-progress-bar,
  .guide-spotlight { transition: none; }
  .guide-target-pulse { animation: none; }
}