/* China Knowledge: a client-only sourcing atlas and learning workspace.
   Colours deliberately resolve through the portal token system so the panel
   follows dark/light mode and cannot create another visual dialect. */
.china-knowledge {
  --ck-line: color-mix(in srgb, var(--gold) 30%, var(--border));
  --ck-glow: color-mix(in srgb, var(--gold) 18%, transparent);
  --ck-cool: color-mix(in srgb, var(--slate) 24%, transparent);
  display: grid;
  gap: 18px;
  max-width: 1320px;
}

.ck-hero {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, .44fr);
  gap: 28px;
  overflow: hidden;
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid var(--ck-line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 82% 45%, var(--ck-glow), transparent 26%),
    linear-gradient(135deg, color-mix(in srgb, var(--bg-card) 94%, var(--gold)), var(--bg-card));
  box-shadow: var(--shadow-lg);
}

.ck-hero::before,
.ck-map-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: .42;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(90deg, transparent, black, transparent);
}

.ck-eyebrow,
.ck-section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--gold-t);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.ck-eyebrow::before,
.ck-section-kicker::before {
  content: "";
  width: 24px;
  height: 1px;
  background: currentColor;
}

.ck-hero h2 {
  max-width: 760px;
  margin: 13px 0 12px;
  color: var(--bright);
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.02;
  letter-spacing: -.045em;
}

.ck-hero p {
  max-width: 720px;
  margin: 0;
  color: var(--mid);
  font-size: 15px;
  line-height: 1.7;
}

.ck-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.ck-meta span,
.ck-badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 5px 10px;
  border: 1px solid var(--border-m);
  border-radius: var(--r-pill);
  background: color-mix(in srgb, var(--bg-dark) 80%, transparent);
  color: var(--mid);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.ck-hero-radar {
  position: relative;
  align-self: center;
  justify-self: center;
  width: min(250px, 100%);
  aspect-ratio: 1;
  border: 1px solid var(--ck-line);
  border-radius: 50%;
  background:
    radial-gradient(circle, transparent 20%, var(--border) 21%, transparent 22%, transparent 43%, var(--border) 44%, transparent 45%),
    conic-gradient(from 0deg, transparent 0 74%, var(--ck-glow) 92%, transparent 100%);
  box-shadow: inset 0 0 60px var(--ck-cool), 0 0 60px var(--ck-glow);
}

.ck-hero-radar::before,
.ck-hero-radar::after {
  content: "";
  position: absolute;
  inset: 50% auto auto 50%;
  background: var(--ck-line);
  transform: translate(-50%, -50%);
}

.ck-hero-radar::before { width: 1px; height: 100%; }
.ck-hero-radar::after { width: 100%; height: 1px; }

.ck-hero-radar__core {
  position: absolute;
  inset: 50% auto auto 50%;
  z-index: 2;
  display: grid;
  width: 76px;
  height: 76px;
  place-items: center;
  border: 1px solid var(--ck-line);
  border-radius: 50%;
  background: var(--bg-dark);
  color: var(--gold-t);
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .12em;
  text-align: center;
  text-transform: uppercase;
  transform: translate(-50%, -50%);
}

.ck-hero-radar__dot {
  position: absolute;
  width: 9px;
  height: 9px;
  border: 2px solid var(--bg-dark);
  border-radius: 50%;
  background: var(--gold-t);
  box-shadow: 0 0 18px var(--gold);
}

.ck-hero-radar__dot:nth-child(2) { left: 31%; top: 28%; }
.ck-hero-radar__dot:nth-child(3) { left: 68%; top: 34%; }
.ck-hero-radar__dot:nth-child(4) { left: 72%; top: 67%; }
.ck-hero-radar__dot:nth-child(5) { left: 36%; top: 73%; }

.ck-tabs {
  display: inline-flex;
  width: fit-content;
  max-width: 100%;
  gap: 4px;
  padding: 5px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-dark);
}

.ck-tab {
  min-height: 42px;
  padding: 9px 15px;
  border: 0;
  border-radius: calc(var(--radius) - 3px);
  background: transparent;
  color: var(--mid);
  font: inherit;
  font-size: 12px;
  font-weight: 750;
  cursor: pointer;
  transition: background var(--motion) var(--ease), color var(--motion) var(--ease), transform var(--motion) var(--ease);
}

.ck-tab:hover { color: var(--bright); }
.ck-tab:active { transform: translateY(1px); }
.ck-tab[aria-selected="true"] { background: var(--gold); color: var(--bg); }

.ck-view[hidden] { display: none; }
.ck-view { animation: ck-arrive .28s var(--ease); }

@keyframes ck-arrive {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.ck-boundary {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--slate) 8%, var(--bg-card));
  color: var(--mid);
  font-size: 12px;
  line-height: 1.6;
}

.ck-boundary strong { color: var(--bright); }
.ck-boundary__icon { color: var(--gold-t); font-weight: 900; }

.ck-atlas-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(340px, .78fr);
  gap: 18px;
  margin-top: 18px;
}

.ck-map-card,
.ck-detail,
.ck-academy-overview,
.ck-lessons,
.ck-lesson-detail,
.ck-sources {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  box-shadow: var(--shadow);
}

.ck-map-card { overflow: hidden; }
.ck-map-heading { padding: 18px 20px 0; }
.ck-map-heading h3,
.ck-detail h3,
.ck-academy-overview h3,
.ck-lesson-detail h3 {
  margin: 6px 0 0;
  color: var(--bright);
  font-size: 19px;
}

.ck-map-heading p,
.ck-detail__intro,
.ck-academy-overview p,
.ck-lesson-detail__summary {
  margin: 7px 0 0;
  color: var(--mid);
  font-size: 12.5px;
  line-height: 1.6;
}

.ck-layer-bar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  margin: 16px 20px 0;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-dark);
}

.ck-layer-bar > span,
.ck-layer-bar > small {
  color: var(--dim);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.ck-layer-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 5px;
}

.ck-layer-controls button {
  min-height: 31px;
  padding: 5px 9px;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--mid);
  font: inherit;
  font-size: 9.5px;
  font-weight: 750;
  cursor: pointer;
}

.ck-layer-controls button:hover,
.ck-layer-controls button:focus-visible,
.ck-layer-controls button[aria-pressed="true"] {
  border-color: var(--ck-line);
  background: var(--gold-pale);
  color: var(--gold-t);
}

.ck-map-stage {
  position: relative;
  min-height: 500px;
  margin: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 70% 52%, var(--ck-glow), transparent 35%),
    linear-gradient(150deg, color-mix(in srgb, var(--slate) 7%, transparent), transparent 48%),
    var(--bg-dark);
}

.ck-map-stage::after {
  content: "COMMERCIAL CLUSTER VIEW · NOT AN ADMINISTRATIVE MAP";
  position: absolute;
  top: 14px;
  right: 15px;
  z-index: 2;
  color: var(--dim);
  font-size: 7.5px;
  font-weight: 800;
  letter-spacing: .13em;
}

.ck-map-outline {
  position: absolute;
  inset: 7% 2% 8%;
  width: 96%;
  height: 85%;
  color: var(--slate);
  filter: drop-shadow(0 0 22px var(--ck-glow));
}

.ck-map-outline .ck-land {
  fill: url("#ckLand");
  stroke: color-mix(in srgb, var(--slate) 55%, var(--gold));
  stroke-width: 1.5;
  vector-effect: non-scaling-stroke;
}

.ck-map-outline .ck-route {
  fill: none;
  stroke: var(--ck-line);
  stroke-dasharray: 5 8;
  stroke-width: 1;
}

.ck-map-outline .ck-river {
  fill: none;
  stroke: color-mix(in srgb, var(--slate) 72%, var(--gold));
  stroke-width: 1.4;
  stroke-linecap: round;
  opacity: .65;
}

.ck-map-zones ellipse {
  fill: var(--gold-pale);
  stroke: var(--ck-line);
  stroke-width: 1;
  opacity: .42;
  transform-box: fill-box;
  transform-origin: center;
  transition: opacity var(--motion) var(--ease), transform var(--motion) var(--ease);
}

.ck-map-stage[data-layer="pressure"] .ck-map-zones ellipse { opacity: .72; filter: url("#ckZoneGlow"); }
.ck-map-stage[data-layer="logistics"] .ck-map-zones ellipse { opacity: .2; }
.ck-map-stage[data-layer="logistics"] .ck-route { stroke-width: 1.8; stroke-dasharray: 4 5; }

.ck-map-gateways { opacity: .34; transition: opacity var(--motion) var(--ease); }
.ck-map-stage[data-layer="logistics"] .ck-map-gateways { opacity: 1; }
.ck-map-gateways circle { fill: var(--gold); }
.ck-map-gateways rect { fill: var(--slate); }
.ck-map-gateways text { fill: var(--dim); font-size: 8px; font-weight: 700; letter-spacing: .02em; }
.ck-map-stage[data-layer="logistics"] .ck-map-gateways text { fill: var(--mid); }

.ck-map-readout {
  position: absolute;
  left: 14px;
  top: 14px;
  z-index: 4;
  display: grid;
  max-width: min(270px, 54%);
  gap: 3px;
  padding: 9px 11px;
  border: 1px solid var(--ck-line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--bg-dark) 88%, transparent);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.ck-map-readout span {
  color: var(--gold-t);
  font-size: 8.5px;
  font-weight: 850;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.ck-map-readout strong { color: var(--bright); font-size: 10px; line-height: 1.35; }

.ck-map-nodes { position: absolute; inset: 0; }

.ck-map-node {
  position: absolute;
  z-index: 3;
  display: flex;
  min-width: 42px;
  min-height: 42px;
  padding: 5px 9px;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--ck-line);
  border-radius: var(--r-pill);
  background: color-mix(in srgb, var(--bg-dark) 84%, transparent);
  color: var(--gold-t);
  font: inherit;
  font-size: 9px;
  font-weight: 850;
  letter-spacing: .04em;
  box-shadow: 0 0 0 6px var(--ck-glow), 0 0 22px transparent;
  cursor: pointer;
  transform: translate(-50%, -50%);
  transition: transform var(--motion) var(--ease), background var(--motion) var(--ease), box-shadow var(--motion) var(--ease);
}

.ck-map-node > span { font-size: 9px; }
.ck-map-node > small {
  display: block;
  max-width: 88px;
  overflow: hidden;
  color: var(--mid);
  font-size: 7.5px;
  font-weight: 720;
  letter-spacing: 0;
  line-height: 1.15;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ck-map-stage[data-layer="pressure"] .ck-map-node[data-pressure^="high"] { border-color: var(--red-border); }
.ck-map-stage[data-layer="pressure"] .ck-map-node[data-pressure^="medium-low"],
.ck-map-stage[data-layer="pressure"] .ck-map-node[data-pressure^="lower"] { border-color: var(--green); }

.ck-map-node::before {
  content: "";
  position: absolute;
  inset: -8px;
  z-index: -1;
  border: 1px solid var(--ck-line);
  border-radius: 50%;
  opacity: .6;
  animation: ck-pulse 2.8s ease-out infinite;
}

.ck-map-node:hover,
.ck-map-node:focus-visible,
.ck-map-node.is-active {
  z-index: 5;
  background: var(--gold);
  color: var(--bg);
  box-shadow: 0 0 0 8px var(--ck-glow), 0 0 26px var(--gold);
  transform: translate(-50%, -50%) scale(1.08);
}

.ck-map-node:hover small,
.ck-map-node:focus-visible small,
.ck-map-node.is-active small { color: var(--bg); }

@keyframes ck-pulse {
  0% { opacity: .72; transform: scale(.75); }
  80%, 100% { opacity: 0; transform: scale(1.55); }
}

.ck-region-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 7px;
  padding: 0 10px 10px;
}

.ck-region-list button,
.ck-lesson-card,
.ck-filter {
  border: 1px solid var(--border);
  background: var(--bg-dark);
  color: var(--mid);
  font: inherit;
  cursor: pointer;
}

.ck-region-list button {
  min-height: 42px;
  padding: 8px;
  border-radius: 8px;
  font-size: 10px;
  font-weight: 700;
  text-align: left;
}

.ck-region-list button span { display: block; }
.ck-region-list button small { display: block; margin-top: 3px; color: var(--dim); font-size: 8.5px; line-height: 1.25; }
.ck-region-list button.is-active small { color: var(--gold-t); }

.ck-map-legend {
  position: absolute;
  left: 14px;
  bottom: 13px;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 7px 9px;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: color-mix(in srgb, var(--bg-dark) 86%, transparent);
  color: var(--dim);
  font-size: 7.5px;
  font-weight: 700;
  backdrop-filter: blur(8px);
}

.ck-map-legend span { display: flex; align-items: center; gap: 5px; }
.ck-map-legend i { display: block; width: 7px; height: 7px; }
.ck-legend-cluster { border: 1px solid var(--gold); border-radius: 50%; background: var(--gold-pale); }
.ck-legend-port { border-radius: 50%; background: var(--gold); }
.ck-legend-hub { background: var(--slate); }

.ck-region-list button:hover,
.ck-region-list button:focus-visible,
.ck-region-list button.is-active {
  border-color: var(--ck-line);
  color: var(--bright);
  background: color-mix(in srgb, var(--gold) 8%, var(--bg-dark));
}

.ck-detail { min-height: 100%; padding: 22px; }
.ck-detail__title-row { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.ck-detail__cn { display: block; margin-top: 4px; color: var(--dim); font-size: 11px; letter-spacing: .08em; }

.ck-pressure-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 18px 0;
}

.ck-pressure {
  padding: 11px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-dark);
}

.ck-pressure span,
.ck-detail-section h4,
.ck-lesson-detail h4 {
  display: block;
  margin: 0 0 5px;
  color: var(--dim);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.ck-pressure strong { color: var(--bright); font-size: 12px; }
.ck-detail-section { margin-top: 17px; }
.ck-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.ck-tags span { padding: 5px 8px; border-radius: 6px; background: var(--gold-pale); color: var(--gold-t); font-size: 10.5px; font-weight: 650; }

.ck-fit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 0 0 18px;
}

.ck-fit-grid > div,
.ck-logistics {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-dark);
}

.ck-fit-grid span,
.ck-logistics strong {
  display: block;
  margin-bottom: 6px;
  color: var(--gold-t);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.ck-fit-grid p,
.ck-logistics p,
.ck-detail-note {
  margin: 0;
  color: var(--mid);
  font-size: 11px;
  line-height: 1.55;
}

.ck-tags--search span { border: 1px solid var(--ck-line); background: var(--bg-dark); }
.ck-detail-note { margin-top: 7px; color: var(--dim); }

.ck-questions {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  counter-reset: ck-question;
  list-style: none;
}

.ck-questions li {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 9px;
  align-items: start;
  color: var(--mid);
  font-size: 11.5px;
  line-height: 1.5;
  counter-increment: ck-question;
}

.ck-questions li::before {
  content: counter(ck-question);
  display: grid;
  width: 22px;
  height: 22px;
  place-items: center;
  border: 1px solid var(--ck-line);
  border-radius: 50%;
  color: var(--gold-t);
  font-size: 8.5px;
  font-weight: 850;
}

.ck-detail-list,
.ck-lesson-points,
.ck-checklist {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.ck-detail-list li,
.ck-lesson-points li,
.ck-checklist li {
  position: relative;
  padding-left: 17px;
  color: var(--mid);
  font-size: 12px;
  line-height: 1.55;
}

.ck-detail-list li::before,
.ck-lesson-points li::before,
.ck-checklist li::before {
  content: "";
  position: absolute;
  left: 1px;
  top: .62em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gold);
}

.ck-gateway-list { display: grid; gap: 7px; }
.ck-gateway {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 11px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--bright);
  font-size: 11px;
  text-decoration: none;
}
.ck-gateway small { color: var(--dim); }
.ck-gateway:hover { border-color: var(--ck-line); color: var(--gold-t); }

.ck-move {
  margin-top: 18px;
  padding: 14px;
  border-left: 3px solid var(--gold);
  border-radius: 0 8px 8px 0;
  background: var(--gold-pale);
  color: var(--mid);
  font-size: 12px;
  line-height: 1.6;
}
.ck-move strong { color: var(--bright); }

.ck-evidence {
  display: grid;
  gap: 7px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.ck-evidence > a {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(120px, .7fr);
  gap: 12px;
  align-items: center;
  padding: 10px 11px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--bright);
  text-decoration: none;
}

.ck-evidence > a:hover { border-color: var(--ck-line); }
.ck-evidence > a strong,
.ck-evidence > a small { display: block; }
.ck-evidence > a strong { font-size: 10.5px; }
.ck-evidence > a small { margin-top: 3px; color: var(--dim); font-size: 8.5px; }
.ck-evidence > a em { color: var(--gold-t); font-size: 9px; font-style: normal; line-height: 1.35; text-align: right; }
.ck-evidence > p { margin: 2px 0 0; color: var(--dim); font-size: 9px; line-height: 1.5; }

.ck-academy-grid {
  display: grid;
  grid-template-columns: minmax(280px, .62fr) minmax(0, 1fr);
  gap: 18px;
  margin-top: 18px;
}

.ck-academy-overview { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center; padding: 22px; }
.ck-progress { min-width: 220px; }
.ck-progress__row { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 7px; color: var(--mid); font-size: 10px; font-weight: 750; text-transform: uppercase; letter-spacing: .06em; }
.ck-progress__track { height: 7px; overflow: hidden; border-radius: var(--r-pill); background: var(--bg-dark); }
.ck-progress__bar { display: block; width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--gold), var(--gold-t)); transition: width .3s var(--ease); }

.ck-lessons { padding: 14px; }
.ck-filters { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.ck-filter { min-height: 34px; padding: 6px 9px; border-radius: var(--r-pill); font-size: 9px; font-weight: 750; text-transform: uppercase; letter-spacing: .05em; }
.ck-filter:hover,
.ck-filter[aria-pressed="true"] { border-color: var(--ck-line); background: var(--gold-pale); color: var(--gold-t); }

.ck-lesson-list { display: grid; gap: 8px; }
.ck-lesson-card { display: grid; grid-template-columns: 32px 1fr auto; gap: 10px; align-items: center; width: 100%; padding: 11px; border-radius: 9px; text-align: left; }
.ck-lesson-card:hover,
.ck-lesson-card:focus-visible,
.ck-lesson-card.is-active { border-color: var(--ck-line); color: var(--bright); background: color-mix(in srgb, var(--gold) 7%, var(--bg-dark)); }
.ck-lesson-card__num { display: grid; width: 30px; height: 30px; place-items: center; border-radius: 8px; background: var(--gold-pale); color: var(--gold-t); font-size: 10px; font-weight: 850; }
.ck-lesson-card strong { display: block; color: inherit; font-size: 11.5px; line-height: 1.35; }
.ck-lesson-card small { display: block; margin-top: 3px; color: var(--dim); font-size: 9.5px; }
.ck-lesson-card__state { color: var(--dim); font-size: 13px; }
.ck-lesson-card.is-complete .ck-lesson-card__state { color: var(--green); }

.ck-lesson-detail { min-height: 560px; padding: clamp(20px, 3vw, 30px); }
.ck-lesson-detail__top { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; }
.ck-lesson-detail__meta { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 12px; }
.ck-lesson-section { margin-top: 22px; }
.ck-lesson-section h4 { margin-bottom: 10px; }

.ck-red-flag {
  margin-top: 20px;
  padding: 14px 15px;
  border: 1px solid var(--red-border);
  border-radius: 9px;
  background: var(--red-pale);
  color: var(--mid);
  font-size: 12px;
  line-height: 1.6;
}
.ck-red-flag strong { color: var(--bright); }

.ck-quiz { margin-top: 22px; padding: 16px; border: 1px solid var(--border); border-radius: 10px; background: var(--bg-dark); }
.ck-quiz p { margin: 0 0 12px; color: var(--bright); font-size: 12.5px; font-weight: 700; line-height: 1.5; }
.ck-quiz__options { display: grid; gap: 7px; }
.ck-quiz__option { min-height: 40px; padding: 8px 11px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg-card); color: var(--mid); font: inherit; font-size: 11px; text-align: left; cursor: pointer; }
.ck-quiz__option:hover { border-color: var(--ck-line); color: var(--bright); }
.ck-quiz__option.is-correct { border-color: var(--green); color: var(--green); background: var(--green-pale); }
.ck-quiz__option.is-wrong { border-color: var(--red-border); color: var(--bright); background: var(--red-pale); }
.ck-quiz__result { margin-top: 10px; color: var(--mid); font-size: 11px; line-height: 1.55; }

.ck-lesson-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }

.ck-detail__actions { display: grid; justify-items: end; gap: 9px; }

.ck-recommendations {
  padding: 20px;
  border: 1px solid var(--ck-line);
  border-radius: var(--r-lg);
  background: linear-gradient(145deg, var(--gold-pale), var(--bg-card));
}
.ck-recommendations.is-empty { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.ck-recommendations h3,
.ck-comparison h3 { margin: 5px 0 7px; color: var(--bright); font-size: 17px; }
.ck-recommendations p,
.ck-comparison p { margin: 0; color: var(--mid); font-size: 11px; line-height: 1.65; }
.ck-recommendations__head { display: flex; justify-content: space-between; gap: 24px; align-items: start; }
.ck-recommendations__head > div { max-width: 690px; }
.ck-recommendation-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 9px; margin-top: 16px; }
.ck-recommendation-grid article { display: flex; flex-direction: column; min-height: 190px; padding: 15px; border: 1px solid var(--border); border-radius: var(--r-md); background: var(--bg-dark); }
.ck-recommendation-grid article > span { color: var(--gold-t); font-size: 8.5px; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.ck-recommendation-grid h4 { margin: 7px 0; color: var(--bright); font-size: 13px; }
.ck-recommendation-grid p { flex: 1; }
.ck-recommendation-grid small { display: block; margin: 10px 0; color: var(--dim); font-size: 9px; }
.ck-recommendation-grid article > div { display: flex; flex-wrap: wrap; gap: 6px; }

.ck-comparison {
  margin-top: 18px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background: var(--bg-card);
}
.ck-comparison__empty { display: grid; justify-items: start; gap: 2px; }
.ck-comparison__empty strong { margin-top: 9px; color: var(--gold-t); font-size: 10px; }
.ck-comparison__head { display: flex; align-items: start; justify-content: space-between; gap: 20px; margin-bottom: 14px; }
.ck-comparison__table { overflow-x: auto; overflow-y: hidden; border: 1px solid var(--border); border-radius: var(--r-md); }
.ck-comparison__row { display: grid; grid-template-columns: minmax(120px, .55fr) repeat(var(--ck-columns), minmax(190px, 1fr)); min-width: calc(120px + (var(--ck-columns) * 190px)); border-bottom: 1px solid var(--border); }
.ck-comparison__row:last-child { border-bottom: 0; }
.ck-comparison__row > strong,
.ck-comparison__row > span { padding: 12px; color: var(--mid); font-size: 10px; line-height: 1.55; border-right: 1px solid var(--border); }
.ck-comparison__row > :last-child { border-right: 0; }
.ck-comparison__row > strong { background: var(--bg-dark); color: var(--dim); font-size: 8.5px; letter-spacing: .06em; text-transform: uppercase; }
.ck-comparison__row--head { background: var(--gold-pale); }
.ck-comparison__row--head span { display: flex; align-items: start; justify-content: space-between; gap: 8px; color: var(--bright); }
.ck-comparison__row--head b { font-size: 11px; }
.ck-comparison__row--head button { padding: 0; border: 0; background: transparent; color: var(--dim); font: inherit; font-size: 16px; cursor: pointer; }
.ck-comparison__boundary { margin-top: 11px !important; color: var(--dim) !important; font-size: 9.5px !important; }

.ck-save-status { display: block; margin-top: 7px; color: var(--dim); font-size: 9px; text-align: right; }
.ck-applied { grid-column: 1 / -1; padding-top: 15px; border-top: 1px solid var(--border); }
.ck-applied__head { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; margin-bottom: 9px; }
.ck-applied__head small { color: var(--dim); font-size: 9px; }
.ck-applied__list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 7px; }
.ck-applied__list p { margin: 0; color: var(--dim); font-size: 10px; }
.ck-applied__list button { display: grid; grid-template-columns: 1fr auto; gap: 3px 12px; padding: 11px; border: 1px solid var(--border); border-radius: var(--r-sm); background: var(--bg-dark); color: var(--bright); text-align: left; cursor: pointer; }
.ck-applied__list button:hover { border-color: var(--ck-line); }
.ck-applied__list span { font-size: 10.5px; font-weight: 700; }
.ck-applied__list small { color: var(--dim); font-size: 8.5px; }
.ck-applied__list em { grid-column: 2; grid-row: 1 / 3; align-self: center; color: var(--gold-t); font-size: 9px; font-style: normal; }

.ck-load-error { display: grid; justify-items: start; gap: 9px; padding: 28px; border: 1px solid var(--red-border); border-radius: var(--r-md); background: var(--red-pale); }
.ck-load-error strong { color: var(--bright); }
.ck-load-error p { margin: 0; color: var(--mid); font-size: 11px; }

.ck-sources { margin-top: 18px; overflow: hidden; }
.ck-sources summary { padding: 15px 18px; color: var(--bright); font-size: 12px; font-weight: 750; cursor: pointer; }
.ck-sources__body { display: grid; gap: 8px; padding: 0 18px 18px; color: var(--mid); font-size: 11px; line-height: 1.6; }
.ck-sources__body a { color: var(--gold-t); }

html.light-mode .ck-hero,
html.light-mode .ck-map-card,
html.light-mode .ck-detail,
html.light-mode .ck-recommendations,
html.light-mode .ck-comparison,
html.light-mode .ck-academy-overview,
html.light-mode .ck-lessons,
html.light-mode .ck-lesson-detail,
html.light-mode .ck-sources { box-shadow: var(--shadow); }

@media (max-width: 980px) {
  .ck-atlas-grid { grid-template-columns: 1fr; }
  .ck-map-stage { min-height: 540px; }
}

@media (max-width: 820px) {
  .ck-hero { grid-template-columns: 1fr; }
  .ck-hero-radar { display: none; }
  .ck-academy-grid { grid-template-columns: 1fr; }
  .ck-academy-overview { grid-template-columns: 1fr; }
  .ck-recommendation-grid { grid-template-columns: 1fr; }
  .ck-progress { min-width: 0; }
}

@media (max-width: 600px) {
  .china-knowledge { gap: 14px; }
  .ck-hero { padding: 22px 18px; }
  .ck-hero h2 { font-size: 30px; }
  .ck-tabs { display: grid; grid-template-columns: 1fr 1fr; width: 100%; }
  .ck-layer-bar { grid-template-columns: 1fr; margin-inline: 14px; }
  .ck-layer-bar > span,
  .ck-layer-bar > small { text-align: center; }
  .ck-map-stage { min-height: 430px; margin: 8px; }
  .ck-map-stage::after { display: none; }
  .ck-map-outline { inset: 10% -5% 10%; width: 110%; height: 80%; }
  .ck-map-node { min-width: 38px; min-height: 38px; padding-inline: 7px; }
  .ck-map-node > small { display: none; }
  .ck-map-readout { top: 9px; left: 9px; max-width: 67%; }
  .ck-map-legend { left: 9px; bottom: 9px; gap: 7px; }
  .ck-region-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ck-detail { padding: 18px 16px; }
  .ck-detail__title-row { align-items: stretch; }
  .ck-detail__actions { justify-items: start; }
  .ck-recommendations.is-empty,
  .ck-recommendations__head,
  .ck-comparison__head { align-items: stretch; flex-direction: column; }
  .ck-applied__list { grid-template-columns: 1fr; }
  .ck-save-status { text-align: left; }
  .ck-pressure-grid { grid-template-columns: 1fr; }
  .ck-fit-grid { grid-template-columns: 1fr; }
  .ck-evidence > a { grid-template-columns: 1fr; }
  .ck-evidence > a em { text-align: left; }
  .ck-lesson-detail { min-height: 0; padding: 20px 16px; }
  .ck-lesson-detail__top { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  .ck-map-node::before { animation: none; }
  .ck-view { animation: none; }
}