/* Overview */
.hero-panel {
  position: relative;
  display: grid;
  min-height: 420px;
  grid-template-columns: minmax(480px, 1.05fr) minmax(430px, .95fr);
  overflow: hidden;
  border: 1px solid rgba(114, 246, 237, .15);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 78% 50%, rgba(54, 217, 208, .09), transparent 32%),
    radial-gradient(circle at 70% 22%, rgba(142, 124, 255, .11), transparent 28%),
    linear-gradient(120deg, rgba(15, 38, 59, .98), rgba(6, 19, 34, .96));
  box-shadow: var(--shadow-lg);
}

.hero-panel::after {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 1px rgba(255, 255, 255, .035);
  content: "";
  pointer-events: none;
}

.hero-copy {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(35px, 4vw, 64px);
}

.hero-kicker {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--cyan-300);
  font-size: 10px;
  font-weight: 650;
  letter-spacing: .05em;
}

.hero-kicker span {
  width: 18px;
  height: 1px;
  background: var(--cyan-400);
  box-shadow: 0 0 8px var(--cyan-400);
}

.hero-copy h1 {
  max-width: 650px;
  margin: 18px 0 15px;
  font-size: clamp(34px, 3.4vw, 52px);
  font-weight: 780;
  letter-spacing: -.045em;
  line-height: 1.16;
}

.hero-copy h1 span {
  position: relative;
  color: var(--cyan-300);
}

.hero-copy h1 span::after {
  position: absolute;
  right: 0;
  bottom: 1px;
  left: 0;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--cyan-400), transparent);
  content: "";
  opacity: .35;
}

.hero-copy > p {
  max-width: 570px;
  margin: 0;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  gap: 10px;
  margin-top: 27px;
}

.hero-proof {
  display: flex;
  gap: 0;
  margin-top: 34px;
}

.hero-proof > div {
  min-width: 105px;
  padding-right: 24px;
}

.hero-proof > div + div {
  padding-left: 24px;
  border-left: 1px solid var(--line-soft);
}

.hero-proof strong,
.hero-proof span {
  display: block;
}

.hero-proof strong {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 650;
}

.hero-proof span {
  margin-top: 5px;
  color: var(--text-muted);
  font-size: 9px;
}

.hero-visual {
  position: relative;
  min-height: 420px;
  overflow: hidden;
}

.visual-grid {
  position: absolute;
  inset: 7% -4% 5% 0;
  opacity: .65;
  transform: perspective(600px) rotateY(-10deg) rotateX(4deg);
  background-image:
    linear-gradient(rgba(95, 185, 205, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(95, 185, 205, .07) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(circle at center, #000 0, transparent 74%);
}

.graph-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.graph-lines path {
  fill: none;
  stroke: url(#lineGradient);
  stroke-dasharray: 6 5;
  stroke-width: 1.35;
  animation: dashFlow 18s linear infinite;
}

.graph-lines circle {
  fill: var(--cyan-300);
  filter: drop-shadow(0 0 6px var(--cyan-400));
}

.graph-node {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: 1px solid rgba(160, 213, 229, .16);
  border-radius: 99px;
  color: var(--text-secondary);
  background: rgba(8, 26, 42, .88);
  box-shadow: 0 10px 22px rgba(0, 6, 16, .28);
  backdrop-filter: blur(8px);
  font-size: 10px;
}

.graph-node > span:not(.node-pulse) {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan-400);
}

.node-small {
  min-width: 78px;
  height: 34px;
}

.node-medium {
  min-width: 96px;
  height: 38px;
}

.node-python {
  bottom: 20%;
  left: 6%;
}

.node-ml {
  bottom: 37%;
  left: 27%;
}

.node-dl {
  top: 18%;
  left: 47%;
}

.node-attention {
  right: 8%;
  bottom: 25%;
}

.node-large {
  top: 24%;
  right: 12%;
  width: 145px;
  height: 145px;
  flex-direction: column;
  gap: 3px;
  border-color: rgba(114, 246, 237, .4);
  border-radius: 50%;
  color: var(--text-primary);
  background:
    radial-gradient(circle at 35% 30%, rgba(114, 246, 237, .18), transparent 40%),
    rgba(9, 31, 48, .94);
  box-shadow: 0 0 0 10px rgba(54, 217, 208, .025), 0 0 60px rgba(54, 217, 208, .14);
}

.node-large::before,
.node-large::after {
  position: absolute;
  border: 1px solid rgba(54, 217, 208, .18);
  border-radius: 50%;
  content: "";
}

.node-large::before {
  inset: -16px;
  border-style: dashed;
  animation: spinSlow 28s linear infinite;
}

.node-large::after {
  inset: -31px;
  border-color: rgba(142, 124, 255, .1);
}

.node-large small {
  color: var(--cyan-400);
  font-size: 8px;
  letter-spacing: .12em;
}

.node-large strong {
  font-family: var(--font-mono);
  font-size: 29px;
}

.node-large em {
  color: var(--text-secondary);
  font-size: 9px;
  font-style: normal;
}

.node-pulse {
  position: absolute;
  top: 8px;
  right: 19px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan-300);
  box-shadow: 0 0 12px var(--cyan-300);
}

.graph-caption {
  position: absolute;
  right: 5%;
  bottom: 4%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 13px;
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  background: rgba(6, 20, 34, .82);
}

.caption-icon {
  display: grid;
  width: 25px;
  height: 25px;
  place-items: center;
  border-radius: 8px;
  color: var(--cyan-300);
  background: var(--cyan-soft);
}

.graph-caption strong,
.graph-caption small {
  display: block;
}

.graph-caption strong {
  font-size: 9px;
}

.graph-caption small {
  margin-top: 3px;
  color: var(--text-muted);
  font-size: 8px;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 13px;
  margin: 16px 0;
}

.metric-card {
  display: flex;
  min-height: 105px;
  align-items: center;
  gap: 13px;
  padding: 17px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, rgba(15, 34, 54, .72), rgba(8, 22, 38, .82));
  box-shadow: var(--shadow-sm);
  transition: .25s var(--ease-out);
}

.metric-card:hover {
  border-color: rgba(114, 246, 237, .2);
  transform: translateY(-3px);
}

.metric-icon {
  display: grid;
  width: 39px;
  height: 39px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 12px;
}

.metric-icon svg {
  width: 20px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.metric-icon.cyan { color: var(--cyan-300); background: var(--cyan-soft); }
.metric-icon.purple { color: var(--purple-300); background: var(--purple-soft); }
.metric-icon.gold { color: var(--gold-400); background: var(--gold-soft); }
.metric-icon.rose { color: var(--rose-400); background: var(--rose-soft); }

.metric-card > div:nth-child(2) {
  min-width: 0;
  flex: 1;
}

.metric-card > div:nth-child(2) span,
.metric-card > div:nth-child(2) strong,
.metric-card > div:nth-child(2) small {
  display: block;
}

.metric-card > div:nth-child(2) span {
  color: var(--text-secondary);
  font-size: 9px;
}

.metric-card > div:nth-child(2) strong {
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: 22px;
}

.metric-card > div:nth-child(2) small {
  margin-top: 3px;
  color: var(--text-muted);
  font-size: 8px;
}

.mini-spark {
  display: flex;
  height: 35px;
  align-items: flex-end;
  gap: 3px;
}

.mini-spark i {
  width: 3px;
  border-radius: 3px;
  background: var(--cyan-400);
  opacity: .65;
}

.mini-spark i:nth-child(1) { height: 22%; }
.mini-spark i:nth-child(2) { height: 48%; }
.mini-spark i:nth-child(3) { height: 36%; }
.mini-spark i:nth-child(4) { height: 72%; }
.mini-spark i:nth-child(5) { height: 96%; }

.metric-ring {
  --value: 0;
  position: relative;
  display: grid;
  width: 43px;
  height: 43px;
  place-items: center;
  border-radius: 50%;
  background: conic-gradient(var(--purple-400) calc(var(--value) * 1%), rgba(255,255,255,.06) 0);
}

.metric-ring::after {
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--ink-800);
  content: "";
}

.metric-ring span {
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 8px;
}

.metric-badge {
  padding: 5px 7px;
  border-radius: 7px;
  color: var(--cyan-300);
  background: var(--cyan-soft);
  font-size: 7px;
}

.metric-badge.warning {
  color: var(--rose-400);
  background: var(--rose-soft);
}

.overview-grid > .panel {
  min-height: 300px;
  padding: 23px;
}

.journey-list {
  margin-top: 18px;
}

.journey-item {
  position: relative;
  display: grid;
  width: 100%;
  min-height: 71px;
  grid-template-columns: 34px 1fr auto;
  gap: 11px;
  align-items: center;
  padding: 10px 5px;
  border: 0;
  color: inherit;
  background: transparent;
  cursor: pointer;
  text-align: left;
}

.journey-item + .journey-item {
  border-top: 1px solid var(--line-soft);
}

.journey-status {
  position: relative;
  z-index: 1;
  display: grid;
  width: 29px;
  height: 29px;
  place-items: center;
  border: 1px solid var(--line-soft);
  border-radius: 9px;
  color: var(--text-muted);
  background: var(--ink-800);
  font-family: var(--font-mono);
  font-size: 8px;
}

.journey-item.is-done .journey-status {
  border-color: rgba(54, 217, 208, .24);
  color: var(--cyan-300);
  background: var(--cyan-soft);
}

.journey-item.is-current .journey-status {
  border-color: var(--purple-400);
  color: var(--white);
  background: var(--purple-500);
  box-shadow: 0 0 20px rgba(142, 124, 255, .2);
}

.journey-copy small,
.journey-copy strong,
.journey-copy em {
  display: block;
}

.journey-copy small {
  color: var(--text-muted);
  font-size: 8px;
}

.journey-copy strong {
  margin: 5px 0;
  font-size: 12px;
  font-weight: 650;
}

.journey-copy em {
  color: var(--text-secondary);
  font-size: 8px;
  font-style: normal;
}

.journey-score {
  color: var(--cyan-300);
  font-family: var(--font-mono);
  font-size: 11px;
}

.journey-action {
  padding: 7px 10px;
  border: 1px solid rgba(142, 124, 255, .25);
  border-radius: 8px;
  color: var(--purple-300);
  background: var(--purple-soft);
  font-size: 9px;
}

.journey-lock {
  color: var(--text-muted);
}

.agent-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border: 1px solid rgba(54, 217, 208, .12);
  border-radius: 7px;
  color: var(--cyan-300);
  background: var(--cyan-soft);
  font-size: 8px;
}

.agent-badge i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan-300);
  box-shadow: 0 0 8px var(--cyan-300);
}

.insight-quote {
  position: relative;
  margin: 23px 0 18px;
  padding: 17px 18px 17px 35px;
  border-left: 2px solid var(--purple-400);
  border-radius: 0 12px 12px 0;
  color: var(--text-secondary);
  background: rgba(142, 124, 255, .07);
  font-size: 10px;
  line-height: 1.85;
}

.insight-quote strong {
  color: var(--text-primary);
}

.quote-mark {
  position: absolute;
  top: 2px;
  left: 10px;
  color: var(--purple-400);
  font-family: Georgia, serif;
  font-size: 30px;
}

.evidence-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 7px;
  margin-bottom: 17px;
}

.evidence-row > div {
  padding: 9px;
  border: 1px solid var(--line-soft);
  border-radius: 9px;
  background: rgba(255, 255, 255, .02);
}

.evidence-row span,
.evidence-row strong {
  display: block;
}

.evidence-row span {
  color: var(--text-muted);
  font-size: 7px;
}

.evidence-row strong {
  margin-top: 4px;
  overflow: hidden;
  font-size: 8px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Diagnosis */
.intro-badge,
.qa-trust-badge,
.practice-streak,
.path-version,
.case-ready {
  min-width: 152px;
  padding: 13px 15px;
  border: 1px solid var(--line-soft);
  border-radius: 13px;
  background: rgba(255, 255, 255, .025);
}

.intro-badge strong,
.intro-badge span,
.qa-trust-badge span,
.qa-trust-badge strong,
.practice-streak span,
.practice-streak strong,
.practice-streak small,
.path-version span,
.path-version strong,
.path-version small {
  display: block;
}

.intro-badge strong,
.practice-streak strong,
.path-version strong {
  font-family: var(--font-mono);
  font-size: 14px;
}

.intro-badge span,
.practice-streak span,
.practice-streak small,
.path-version span,
.path-version small {
  margin-top: 4px;
  color: var(--text-muted);
  font-size: 8px;
}

.diagnosis-progress-wrap {
  margin-bottom: 18px;
  padding: 15px 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: rgba(10, 27, 44, .7);
}

.diagnosis-progress-meta,
.progress-labels {
  display: flex;
  justify-content: space-between;
}

.diagnosis-progress-meta {
  margin-bottom: 9px;
  color: var(--text-secondary);
  font-size: 9px;
}

.diagnosis-progress-meta strong {
  color: var(--cyan-300);
  font-family: var(--font-mono);
  font-size: 10px;
}

.progress-track {
  height: 5px;
  overflow: hidden;
  border-radius: 8px;
  background: rgba(255, 255, 255, .06);
}

.progress-track span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--cyan-400), var(--purple-400));
  box-shadow: 0 0 15px rgba(54, 217, 208, .35);
  transition: width .4s var(--ease-spring);
}

.progress-labels {
  margin-top: 9px;
  color: var(--text-muted);
  font-size: 7px;
}

.progress-labels .is-active {
  color: var(--cyan-300);
}

.diagnosis-layout {
  display: grid;
  grid-template-columns: minmax(560px, 1.45fr) minmax(300px, .55fr);
  gap: 18px;
}

.quiz-card {
  min-height: 520px;
  padding: clamp(25px, 3vw, 40px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-xl);
  background: linear-gradient(145deg, rgba(17, 38, 60, .86), rgba(7, 21, 37, .94));
  box-shadow: var(--shadow-md);
}

.quiz-meta,
.practice-meta {
  display: flex;
  align-items: center;
  gap: 8px;
}

.question-number {
  color: var(--cyan-300);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

.concept-chip,
.difficulty-chip {
  padding: 5px 8px;
  border: 1px solid rgba(142, 124, 255, .13);
  border-radius: 7px;
  color: var(--purple-300);
  background: var(--purple-soft);
  font-size: 8px;
}

.difficulty-chip {
  color: var(--gold-400);
  background: var(--gold-soft);
}

.quiz-card h2,
.practice-card h2 {
  max-width: 890px;
  margin: 29px 0 26px;
  font-size: clamp(20px, 2vw, 28px);
  font-weight: 680;
  letter-spacing: -.025em;
  line-height: 1.55;
}

.option-list,
.practice-options {
  display: grid;
  gap: 10px;
}

.quiz-option,
.practice-options button {
  display: flex;
  width: 100%;
  min-height: 53px;
  align-items: center;
  gap: 13px;
  padding: 10px 13px;
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, .018);
  cursor: pointer;
  font-size: 11px;
  line-height: 1.55;
  text-align: left;
  transition: .22s var(--ease-out);
}

.quiz-option span,
.practice-options button span {
  display: grid;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 9px;
}

.quiz-option:hover,
.practice-options button:hover {
  border-color: rgba(54, 217, 208, .25);
  color: var(--text-primary);
  background: rgba(54, 217, 208, .045);
}

.quiz-option.is-selected,
.practice-options button.is-selected {
  border-color: var(--cyan-400);
  color: var(--text-primary);
  background: linear-gradient(90deg, rgba(54, 217, 208, .12), rgba(54, 217, 208, .035));
  box-shadow: inset 3px 0 var(--cyan-400);
}

.quiz-option.is-selected span,
.practice-options button.is-selected span {
  border-color: var(--cyan-400);
  color: var(--ink-900);
  background: var(--cyan-400);
}

.practice-options button.is-correct {
  border-color: var(--green-400);
  background: rgba(114, 232, 161, .08);
}

.practice-options button.is-wrong {
  border-color: var(--danger-400);
  background: rgba(255, 109, 121, .08);
}

.quiz-footer,
.practice-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 28px;
  padding-top: 19px;
  border-top: 1px solid var(--line-soft);
}

.quiz-tip {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--text-muted);
  font-size: 8px;
}

.quiz-tip span {
  color: var(--cyan-300);
}

.diagnosis-aside {
  display: grid;
  gap: 18px;
}

.compact-panel {
  min-height: 250px;
  padding: 21px;
}

.aside-title span,
.aside-title strong {
  display: block;
}

.aside-title span {
  color: var(--text-muted);
  font-size: 8px;
}

.aside-title strong {
  margin-top: 5px;
  font-size: 13px;
}

.skill-orbit {
  position: relative;
  width: 195px;
  height: 168px;
  margin: 12px auto 0;
}

.orbit {
  position: absolute;
  border: 1px dashed rgba(114, 246, 237, .13);
  border-radius: 50%;
}

.orbit-one { inset: 26px 39px; }
.orbit-two { inset: 5px 13px; border-color: rgba(142, 124, 255, .13); transform: rotate(-17deg); }

.skill-core {
  position: absolute;
  top: 55px;
  left: 67px;
  display: grid;
  width: 62px;
  height: 62px;
  place-items: center;
  border: 1px solid rgba(114, 246, 237, .28);
  border-radius: 50%;
  color: var(--cyan-300);
  background: var(--cyan-soft);
  box-shadow: var(--glow-cyan);
  font-family: var(--font-mono);
  font-weight: 700;
}

.skill-point {
  position: absolute;
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid var(--line-soft);
  border-radius: 50%;
  color: var(--text-secondary);
  background: var(--ink-800);
  font-family: var(--font-mono);
  font-size: 7px;
}

.skill-point::after {
  position: absolute;
  inset: -3px;
  border: 1px solid rgba(255,255,255,.04);
  border-radius: 50%;
  content: "";
}

.p1 { top: 11px; left: 20px; }
.p2 { top: 2px; right: 21px; }
.p3 { right: 0; bottom: 17px; }
.p4 { bottom: 2px; left: 13px; }

.reason-card {
  min-height: 250px;
}

.reason-card h3 {
  margin: 8px 0 10px;
  font-size: 14px;
}

.reason-card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 10px;
  line-height: 1.8;
}

.reason-source {
  margin-top: 18px;
  padding: 11px;
  border-left: 2px solid var(--purple-400);
  border-radius: 0 8px 8px 0;
  background: var(--purple-soft);
}

.reason-source span,
.reason-source strong {
  display: block;
}

.reason-source span {
  color: var(--text-muted);
  font-size: 7px;
}

.reason-source strong {
  margin-top: 4px;
  font-size: 9px;
}

.diagnosis-result {
  animation: viewIn .5s var(--ease-spring);
}

.result-hero {
  display: flex;
  min-height: 310px;
  align-items: center;
  gap: 48px;
  padding: 42px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 14% 50%, rgba(54, 217, 208, .12), transparent 24%),
    linear-gradient(145deg, rgba(17, 42, 64, .88), rgba(8, 22, 38, .95));
}

.result-score {
  position: relative;
  display: grid;
  width: 174px;
  height: 174px;
  flex: 0 0 auto;
  place-items: center;
}

.result-score svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.result-score circle {
  fill: none;
  stroke: rgba(255,255,255,.06);
  stroke-width: 8;
}

.result-score .result-ring-value {
  stroke: var(--cyan-400);
  stroke-dasharray: 402;
  stroke-dashoffset: 110;
  stroke-linecap: round;
  filter: drop-shadow(0 0 7px rgba(54,217,208,.4));
}

.result-score > div {
  z-index: 1;
  text-align: center;
}

.result-score strong,
.result-score span {
  display: block;
}

.result-score strong {
  font-family: var(--font-mono);
  font-size: 44px;
}

.result-score span {
  color: var(--text-muted);
  font-size: 8px;
}

.result-copy h2 {
  margin: 10px 0;
  font-size: 29px;
}

.result-copy p {
  max-width: 650px;
  color: var(--text-secondary);
  font-size: 11px;
  line-height: 1.8;
}

.result-actions {
  display: flex;
  gap: 10px;
  margin-top: 22px;
}

.result-breakdown {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.result-breakdown > div {
  padding: 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: var(--surface-glass);
}

.result-breakdown span,
.result-breakdown strong,
.result-breakdown small {
  display: block;
}

.result-breakdown span {
  color: var(--text-muted);
  font-size: 8px;
}

.result-breakdown strong {
  margin: 7px 0;
  font-size: 17px;
}

.result-breakdown small {
  color: var(--text-secondary);
  font-size: 8px;
}

/* Path */
.path-version {
  border-color: rgba(142, 124, 255, .2);
  background: var(--purple-soft);
}

.path-version strong {
  color: var(--purple-300);
}

.path-toolbar {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 18px;
  padding: 14px 17px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: rgba(9, 25, 42, .8);
}

.target-summary {
  display: flex;
  min-width: 330px;
  align-items: center;
  gap: 10px;
}

.target-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 10px;
  color: var(--cyan-300);
  background: var(--cyan-soft);
}

.target-summary small,
.target-summary strong {
  display: block;
}

.target-summary small {
  color: var(--text-muted);
  font-size: 7px;
}

.target-summary strong {
  margin-top: 3px;
  font-size: 10px;
}

.path-filters {
  display: flex;
  gap: 6px;
}

.filter-chip {
  padding: 7px 10px;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--text-muted);
  background: transparent;
  cursor: pointer;
  font-size: 8px;
}

.filter-chip:hover,
.filter-chip.is-active {
  border-color: var(--line-soft);
  color: var(--cyan-300);
  background: var(--cyan-soft);
}

.time-budget {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  font-size: 8px;
}

.time-budget span {
  color: var(--text-muted);
}

.time-budget strong {
  font-family: var(--font-mono);
}

.time-budget button {
  border: 0;
  color: var(--cyan-300);
  background: transparent;
  cursor: pointer;
  font-size: 8px;
}

.path-layout {
  display: grid;
  grid-template-columns: minmax(600px, 1.35fr) minmax(320px, .65fr);
  gap: 18px;
}

.path-canvas {
  min-height: 630px;
  padding: 23px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(rgba(80, 145, 180, .025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(80, 145, 180, .025) 1px, transparent 1px),
    linear-gradient(145deg, rgba(12, 31, 50, .85), rgba(6, 20, 34, .92));
  background-size: 27px 27px, 27px 27px, auto;
}

.path-legend {
  display: flex;
  justify-content: flex-end;
  gap: 15px;
  color: var(--text-muted);
  font-size: 7px;
}

.path-legend span {
  display: flex;
  align-items: center;
  gap: 5px;
}

.path-legend i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.path-legend .done { background: var(--cyan-400); }
.path-legend .current { background: var(--purple-400); box-shadow: 0 0 7px var(--purple-400); }
.path-legend .recommended { border: 1px solid var(--text-muted); }

.path-map {
  position: relative;
  max-width: 730px;
  margin: 20px auto 0;
}

.path-rail {
  position: absolute;
  top: 27px;
  bottom: 27px;
  left: 27px;
  width: 1px;
  background: linear-gradient(var(--cyan-400) 0 50%, var(--purple-400) 72%, rgba(255,255,255,.08) 72%);
}

.path-node {
  position: relative;
  display: grid;
  width: 100%;
  min-height: 79px;
  grid-template-columns: 55px 48px 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 10px 16px 10px 0;
  border: 1px solid transparent;
  border-radius: 14px;
  color: inherit;
  background: transparent;
  cursor: pointer;
  text-align: left;
  transition: .24s var(--ease-out);
}

.path-node + .path-node {
  margin-top: 6px;
}

.path-node:hover,
.path-node.is-selected {
  border-color: var(--line-soft);
  background: rgba(255, 255, 255, .03);
  transform: translateX(4px);
}

.path-node.is-current {
  border-color: rgba(142, 124, 255, .22);
  background: linear-gradient(90deg, rgba(142,124,255,.1), transparent);
}

.path-index {
  position: relative;
  z-index: 1;
  display: grid;
  width: 29px;
  height: 29px;
  place-items: center;
  justify-self: center;
  border: 1px solid var(--line-soft);
  border-radius: 50%;
  color: var(--text-muted);
  background: var(--ink-800);
  font-family: var(--font-mono);
  font-size: 8px;
}

.path-node.is-done .path-index {
  border-color: var(--cyan-400);
  color: var(--ink-900);
  background: var(--cyan-400);
}

.path-node.is-current .path-index {
  border-color: var(--purple-400);
  color: var(--white);
  background: var(--purple-500);
  box-shadow: 0 0 14px rgba(142, 124, 255, .35);
}

.path-node-icon {
  display: grid;
  width: 43px;
  height: 43px;
  place-items: center;
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, .025);
  font-family: var(--font-mono);
  font-size: 10px;
}

.path-node.is-current .path-node-icon,
.path-node.is-target .path-node-icon {
  color: var(--purple-300);
  background: var(--purple-soft);
}

.path-node-copy small,
.path-node-copy strong,
.path-node-copy em {
  display: block;
}

.path-node-copy small {
  color: var(--text-muted);
  font-size: 7px;
}

.path-node-copy strong {
  margin: 5px 0;
  font-size: 11px;
}

.path-node-copy em {
  color: var(--text-secondary);
  font-size: 8px;
  font-style: normal;
}

.path-duration {
  padding: 6px 8px;
  border: 1px solid var(--line-soft);
  border-radius: 7px;
  color: var(--text-muted);
  font-size: 7px;
}

.path-detail {
  min-height: 630px;
  padding: 26px;
}

.path-detail-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 34px;
}

.detail-index {
  display: grid;
  width: 45px;
  height: 45px;
  place-items: center;
  border: 1px solid rgba(142, 124, 255, .28);
  border-radius: 13px;
  color: var(--purple-300);
  background: var(--purple-soft);
  font-family: var(--font-mono);
  font-size: 12px;
}

.path-detail h2 {
  margin: 10px 0;
  font-size: 24px;
  letter-spacing: -.03em;
}

.path-detail > p {
  color: var(--text-secondary);
  font-size: 10px;
  line-height: 1.85;
}

.detail-progress {
  margin: 26px 0 20px;
}

.detail-progress > div:first-child {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  color: var(--text-muted);
  font-size: 8px;
}

.detail-progress strong {
  color: var(--purple-300);
  font-family: var(--font-mono);
}

.detail-evidence {
  display: grid;
  gap: 8px;
}

.detail-evidence > div {
  padding: 12px;
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  background: rgba(255, 255, 255, .02);
}

.detail-evidence span,
.detail-evidence strong {
  display: block;
}

.detail-evidence span {
  color: var(--text-muted);
  font-size: 7px;
}

.detail-evidence strong {
  margin-top: 5px;
  font-size: 9px;
  line-height: 1.5;
}

.detail-actions {
  display: grid;
  gap: 8px;
  margin-top: 25px;
}

/* QA */
.qa-trust-badge span,
.qa-trust-badge strong {
  display: block;
}

.qa-trust-badge span {
  color: var(--text-muted);
  font-size: 8px;
}

.qa-trust-badge strong {
  margin-top: 5px;
  color: var(--cyan-300);
  font-size: 10px;
}

.qa-layout {
  display: grid;
  grid-template-columns: minmax(620px, 1.4fr) minmax(330px, .6fr);
  gap: 18px;
}

.qa-workspace {
  display: flex;
  min-height: 660px;
  flex-direction: column;
  overflow: hidden;
}

.qa-suggestions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  padding: 15px 20px;
  border-bottom: 1px solid var(--line-soft);
}

.qa-suggestions span {
  color: var(--text-muted);
  font-size: 8px;
}

.qa-suggestions button {
  padding: 6px 9px;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  color: var(--text-secondary);
  background: rgba(255,255,255,.02);
  cursor: pointer;
  font-size: 8px;
}

.qa-suggestions button:hover {
  border-color: var(--line-strong);
  color: var(--cyan-300);
}

.conversation {
  min-height: 490px;
  flex: 1;
  padding: 25px;
  overflow-y: auto;
}

.message {
  display: flex;
  align-items: flex-start;
  gap: 11px;
}

.message + .message {
  margin-top: 24px;
}

.message-avatar {
  display: grid;
  width: 33px;
  height: 33px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  color: var(--text-secondary);
  background: var(--surface-soft);
  font-size: 10px;
  font-weight: 700;
}

.ai-avatar {
  border-color: rgba(54,217,208,.24);
  color: var(--cyan-300);
  background: var(--cyan-soft);
}

.message-body {
  max-width: calc(100% - 46px);
  padding: 13px 16px;
  border: 1px solid var(--line-soft);
  border-radius: 4px 14px 14px;
  color: var(--text-secondary);
  background: rgba(255,255,255,.025);
  font-size: 10px;
  line-height: 1.8;
}

.message-user {
  flex-direction: row-reverse;
}

.message-user .message-body {
  border-radius: 14px 4px 14px 14px;
  color: var(--text-primary);
  background: var(--purple-soft);
}

.message-ai .message-body {
  width: 100%;
  padding: 18px;
}

.answer-state {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  color: var(--text-muted);
  font-size: 7px;
}

.answer-status {
  padding: 4px 7px;
  border-radius: 6px;
  color: var(--cyan-300);
  background: var(--cyan-soft);
}

.message-body p {
  margin: 0;
}

.message-body p + p {
  margin-top: 9px;
}

.answer-evidence {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-top: 16px;
}

.answer-evidence button {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px;
  border: 1px solid var(--line-soft);
  border-radius: 9px;
  color: var(--text-secondary);
  background: rgba(255,255,255,.02);
  cursor: pointer;
  text-align: left;
}

.answer-evidence button:hover {
  border-color: var(--line-strong);
}

.answer-evidence button > span {
  display: grid;
  width: 25px;
  height: 25px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 7px;
  color: var(--cyan-300);
  background: var(--cyan-soft);
  font-family: var(--font-mono);
  font-size: 7px;
}

.answer-evidence strong,
.answer-evidence small {
  display: block;
}

.answer-evidence strong {
  font-size: 8px;
}

.answer-evidence small {
  margin-top: 3px;
  color: var(--text-muted);
  font-size: 7px;
}

.qa-composer {
  margin: 0 20px 20px;
  padding: 11px 13px;
  border: 1px solid rgba(114,246,237,.18);
  border-radius: 14px;
  background: rgba(5,18,31,.72);
}

.qa-query-mode {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0 0 10px;
  padding: 0;
  border: 0;
}

.qa-query-mode legend {
  margin-bottom: 6px;
  color: var(--text-muted);
  font-size: 8px;
}

.qa-query-mode label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 10px;
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  background: rgba(255,255,255,.02);
  cursor: pointer;
}

.qa-query-mode label:has(input:checked) {
  border-color: rgba(54,217,208,.4);
  background: var(--cyan-soft);
}

.qa-query-mode input {
  accent-color: var(--cyan-400);
}

.qa-query-mode strong,
.qa-query-mode small {
  display: block;
}

.qa-query-mode strong {
  color: var(--text-primary);
  font-size: 9px;
}

.qa-query-mode small {
  margin-top: 2px;
  color: var(--text-muted);
  font-size: 7px;
}

.qa-composer textarea {
  display: block;
  width: 100%;
  min-height: 26px;
  resize: none;
  border: 0;
  outline: 0;
  color: var(--text-primary);
  background: transparent;
  font-size: 10px;
  line-height: 1.6;
}

.qa-composer textarea::placeholder {
  color: var(--text-muted);
}

.external-evidence-consent {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  margin-top: 7px;
  color: var(--text-muted);
  font-size: 7px;
  line-height: 1.5;
  cursor: pointer;
}

.external-evidence-consent input {
  width: 12px;
  height: 12px;
  margin: 0;
  accent-color: var(--cyan-400);
}

.composer-tools {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 5px;
}

.composer-tools > span {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 7px;
}

.composer-tools > span i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green-400);
}

.composer-tools button {
  display: grid;
  width: 31px;
  height: 31px;
  place-items: center;
  border: 0;
  border-radius: 9px;
  color: var(--ink-900);
  background: var(--cyan-400);
  cursor: pointer;
}

.composer-tools button svg {
  width: 16px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.agent-trace {
  min-height: 660px;
  padding: 22px;
}

.trace-time {
  color: var(--cyan-300);
  font-family: var(--font-mono);
  font-size: 9px;
}

.agent-list {
  position: relative;
  display: grid;
  gap: 7px;
  margin-top: 21px;
}

.agent-list::before {
  position: absolute;
  top: 20px;
  bottom: 20px;
  left: 17px;
  width: 1px;
  background: linear-gradient(var(--cyan-400), var(--purple-400));
  content: "";
  opacity: .28;
}

.agent-step {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: 65px;
  grid-template-columns: 35px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border: 1px solid transparent;
  border-radius: 11px;
  opacity: .42;
  transition: .3s var(--ease-out);
}

.agent-step.is-running {
  border-color: rgba(142,124,255,.2);
  background: var(--purple-soft);
  opacity: 1;
  transform: translateX(3px);
}

.agent-step.is-done {
  opacity: 1;
}

.agent-step-icon {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border: 1px solid var(--line-soft);
  border-radius: 9px;
  color: var(--text-muted);
  background: var(--ink-800);
  font-family: var(--font-mono);
  font-size: 7px;
}

.agent-step.is-done .agent-step-icon {
  border-color: rgba(54,217,208,.22);
  color: var(--cyan-300);
  background: var(--cyan-soft);
}

.agent-step.is-running .agent-step-icon {
  border-color: rgba(142,124,255,.25);
  color: var(--purple-300);
  background: var(--purple-soft);
  animation: softPulse 1.1s infinite;
}

.agent-step strong,
.agent-step small {
  display: block;
}

.agent-step strong {
  font-size: 9px;
}

.agent-step small {
  margin-top: 4px;
  color: var(--text-muted);
  font-size: 7px;
}

.agent-step em {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 7px;
  font-style: normal;
}

.trace-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin-top: 20px;
}

.trace-summary > div {
  padding: 9px 6px;
  border: 1px solid var(--line-soft);
  border-radius: 9px;
  text-align: center;
}

.trace-summary span,
.trace-summary strong {
  display: block;
}

.trace-summary span {
  color: var(--text-muted);
  font-size: 7px;
}

.trace-summary strong {
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: 9px;
}

.good {
  color: var(--green-400) !important;
}

.demo-notice {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: 20px;
  padding: 11px;
  border: 1px dashed rgba(244,201,107,.18);
  border-radius: 10px;
  background: var(--gold-soft);
}

.demo-notice > span {
  display: grid;
  width: 17px;
  height: 17px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  color: var(--gold-400);
  background: rgba(244,201,107,.12);
  font-family: serif;
  font-size: 8px;
}

.demo-notice p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 7px;
  line-height: 1.6;
}

/* Practice */
.practice-layout {
  display: grid;
  grid-template-columns: minmax(560px, 1.35fr) minmax(330px, .65fr);
  gap: 18px;
}

.practice-card,
.mastery-card {
  min-height: 490px;
  padding: 28px;
}

.practice-meta {
  color: var(--text-muted);
  font-size: 8px;
}

.practice-meta span:not(.difficulty-chip) + span {
  padding-left: 8px;
  border-left: 1px solid var(--line-soft);
}

.source-hint span,
.source-hint strong {
  display: block;
}

.source-hint span {
  color: var(--text-muted);
  font-size: 7px;
}

.source-hint strong {
  margin-top: 4px;
  font-size: 9px;
}

.mastery-main {
  display: flex;
  align-items: center;
  gap: 20px;
  margin: 30px 0;
}

.mastery-ring {
  position: relative;
  display: grid;
  width: 105px;
  height: 105px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  background: conic-gradient(var(--purple-400) 58%, rgba(255,255,255,.06) 0);
  transition: background .45s;
}

.mastery-ring::before {
  position: absolute;
  inset: 7px;
  border-radius: 50%;
  background: var(--ink-800);
  content: "";
}

.mastery-ring > span {
  z-index: 1;
}

.mastery-ring strong {
  font-family: var(--font-mono);
  font-size: 28px;
}

.mastery-ring small {
  color: var(--text-muted);
  font-size: 9px;
}

.mastery-main > div:last-child span,
.mastery-main > div:last-child strong,
.mastery-main > div:last-child small {
  display: block;
}

.mastery-main > div:last-child span {
  color: var(--text-muted);
  font-size: 8px;
}

.mastery-main > div:last-child strong {
  margin: 7px 0;
  font-size: 15px;
}

.mastery-main > div:last-child small {
  color: var(--text-secondary);
  font-size: 8px;
}

.mastery-factors {
  display: grid;
  gap: 12px;
}

.mastery-factors > div {
  display: grid;
  grid-template-columns: 72px 1fr 25px;
  align-items: center;
  gap: 8px;
  font-size: 8px;
}

.mastery-factors span {
  color: var(--text-secondary);
}

.mastery-factors > div > div {
  height: 4px;
  overflow: hidden;
  border-radius: 5px;
  background: rgba(255,255,255,.06);
}

.mastery-factors i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--purple-400), var(--cyan-400));
}

.mastery-factors strong {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 8px;
  text-align: right;
}

.mastery-card > p {
  margin-top: 26px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  color: var(--text-muted);
  font-size: 8px;
  line-height: 1.7;
}

.analysis-panel {
  margin-top: 18px;
  padding: 27px;
  border: 1px solid rgba(255,127,152,.18);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 5% 15%, rgba(255,127,152,.08), transparent 22%),
    linear-gradient(145deg, rgba(19,38,57,.9), rgba(8,21,36,.95));
  box-shadow: var(--shadow-md);
  animation: viewIn .45s var(--ease-spring);
}

.analysis-heading {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  align-items: center;
  gap: 15px;
}

.analysis-icon {
  display: grid;
  width: 45px;
  height: 45px;
  place-items: center;
  border: 1px solid rgba(255,127,152,.25);
  border-radius: 13px;
  color: var(--rose-400);
  background: var(--rose-soft);
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 800;
}

.analysis-heading h2 {
  margin: 5px 0;
  font-size: 20px;
}

.analysis-heading p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 9px;
}

.mastery-change {
  min-width: 140px;
  padding: 12px;
  border: 1px solid var(--line-soft);
  border-radius: 11px;
  text-align: center;
}

.mastery-change span,
.mastery-change strong {
  display: block;
}

.mastery-change span {
  color: var(--text-muted);
  font-size: 7px;
}

.mastery-change strong {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 16px;
}

.mastery-change em {
  color: var(--text-secondary);
  font-style: normal;
}

.mastery-change b {
  color: var(--rose-400);
}

.analysis-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 11px;
  margin: 22px 0 17px;
}

.analysis-card {
  min-height: 148px;
  padding: 16px;
  border: 1px solid var(--line-soft);
  border-radius: 13px;
  background: rgba(255,255,255,.022);
}

.analysis-card > span,
.analysis-card > strong {
  display: block;
}

.analysis-card > span {
  color: var(--text-muted);
  font-size: 7px;
}

.analysis-card > strong {
  margin: 7px 0;
  font-size: 10px;
}

.analysis-card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 8px;
  line-height: 1.7;
}

.mini-relation {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 18px;
}

.mini-relation i {
  padding: 6px 8px;
  border: 1px solid var(--line-soft);
  border-radius: 7px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 7px;
  font-style: normal;
}

.mini-relation b {
  color: var(--purple-300);
  font-family: var(--font-mono);
  font-size: 6px;
  font-weight: 500;
}

.path-update small {
  display: inline-block;
  margin-top: 11px;
  padding: 4px 6px;
  border-radius: 5px;
  color: var(--purple-300);
  background: var(--purple-soft);
  font-family: var(--font-mono);
  font-size: 7px;
}

/* Cases */
.case-ready {
  display: flex;
  align-items: center;
  gap: 10px;
}

.case-ready strong,
.case-ready small {
  display: block;
}

.case-ready strong {
  font-size: 10px;
}

.case-ready small {
  margin-top: 3px;
  color: var(--text-muted);
  font-size: 7px;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.case-card {
  position: relative;
  display: flex;
  min-height: 540px;
  flex-direction: column;
  padding: 25px;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-xl);
  background: linear-gradient(145deg, rgba(15,35,55,.82), rgba(7,20,35,.94));
  box-shadow: var(--shadow-md);
  transition: .28s var(--ease-out);
}

.case-card::before {
  position: absolute;
  top: -80px;
  right: -80px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: var(--purple-400);
  content: "";
  filter: blur(70px);
  opacity: .06;
}

.case-card.featured {
  border-color: rgba(54,217,208,.25);
  box-shadow: var(--shadow-md), var(--glow-cyan);
}

.case-card:hover {
  border-color: rgba(114,246,237,.26);
  transform: translateY(-5px);
}

.case-number {
  color: var(--cyan-400);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: .15em;
}

.case-visual {
  display: flex;
  min-height: 145px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 18px 0;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: 16px;
  background:
    linear-gradient(rgba(80,145,180,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(80,145,180,.035) 1px, transparent 1px),
    rgba(255,255,255,.018);
  background-size: 20px 20px;
}

.case-visual span,
.case-visual strong {
  padding: 8px 9px;
  border: 1px solid var(--line-soft);
  border-radius: 9px;
  background: var(--ink-800);
  font-size: 8px;
}

.case-visual strong {
  border-color: rgba(54,217,208,.28);
  color: var(--cyan-300);
  background: var(--cyan-soft);
}

.path-case-visual i {
  width: 27px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan-400), var(--purple-400));
}

.qa-case-visual i,
.feedback-case-visual i {
  color: var(--purple-300);
  font-family: var(--font-mono);
  font-size: 10px;
  font-style: normal;
}

.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.case-tags span {
  padding: 4px 7px;
  border-radius: 5px;
  color: var(--text-muted);
  background: rgba(255,255,255,.035);
  font-size: 7px;
}

.case-card h2 {
  margin: 14px 0 8px;
  font-size: 19px;
  letter-spacing: -.025em;
}

.case-card > p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 9px;
  line-height: 1.75;
}

.case-proof {
  margin: 18px 0;
  padding: 12px;
  border-left: 2px solid var(--purple-400);
  border-radius: 0 9px 9px 0;
  background: var(--purple-soft);
}

.case-proof span,
.case-proof strong {
  display: block;
}

.case-proof span {
  color: var(--text-muted);
  font-size: 7px;
}

.case-proof strong {
  margin-top: 4px;
  font-size: 9px;
}

.case-card > .button {
  margin-top: auto;
}

/* Teacher */
.teacher-actions {
  display: flex;
  gap: 8px;
}

.teacher-metrics {
  display: grid;
  grid-template-columns: 1.1fr repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

.teacher-metrics article {
  padding: 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: var(--surface-glass);
}

.teacher-metrics span,
.teacher-metrics strong,
.teacher-metrics small {
  display: block;
}

.teacher-metrics span {
  color: var(--text-muted);
  font-size: 8px;
}

.teacher-metrics strong {
  margin: 7px 0 4px;
  font-family: var(--font-mono);
  font-size: 19px;
}

.teacher-metrics small {
  color: var(--text-secondary);
  font-size: 7px;
}

.teacher-metrics .up {
  color: var(--green-400);
}

.teacher-metrics .warn {
  color: var(--gold-400);
}

.teacher-student-browser {
  margin-bottom: 16px;
  padding: 20px 22px;
}

.teacher-student-browser-heading p {
  margin: 6px 0 0;
  color: var(--text-secondary);
}

.teacher-student-browser-heading form {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) auto;
  gap: 8px;
}

.teacher-student-browser-heading input {
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  background: rgba(5, 15, 27, .68);
}

.teacher-student-list {
  display: grid;
  gap: 7px;
  margin-top: 16px;
}

.teacher-student-row {
  display: grid;
  grid-template-columns: 42px minmax(150px, .9fr) minmax(210px, 1.25fr) minmax(170px, .9fr) auto;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 11px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  background: rgba(255,255,255,.025);
  text-align: left;
  cursor: pointer;
}

.teacher-student-row:hover { border-color: rgba(54,217,208,.28); background: rgba(54,217,208,.05); }
.teacher-student-row span strong,
.teacher-student-row span small { display: block; }
.teacher-student-row span strong { color: var(--text-primary); }
.teacher-student-row span small { margin-top: 4px; color: var(--text-muted); }
.teacher-student-row > span:last-child { color: var(--cyan-300); text-align: right; }

.teacher-detail-card {
  width: min(1040px, calc(100vw - 32px));
  max-height: 88vh;
  overflow: auto;
}

.teacher-detail-body { margin-top: 18px; }
.teacher-detail-summary {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 9px;
}

.teacher-detail-summary > div {
  padding: 13px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(5,15,27,.55);
}

.teacher-detail-summary span,
.teacher-detail-summary strong { display: block; }
.teacher-detail-summary span { color: var(--text-muted); }
.teacher-detail-summary strong { margin-top: 6px; color: var(--cyan-300); }
.teacher-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 14px; }
.teacher-detail-grid > section { padding: 16px; border: 1px solid var(--line-soft); border-radius: var(--radius-md); background: rgba(5,15,27,.45); }
.teacher-detail-grid h3 { margin: 0 0 12px; }
.teacher-evidence-list,
.teacher-recommendation-list { display: grid; gap: 8px; }
.teacher-evidence-list > div { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--line-soft); }
.teacher-evidence-list span { color: var(--text-muted); }
.teacher-recommendation-list article { padding: 12px; border-left: 3px solid var(--cyan-400); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; background: rgba(54,217,208,.055); }
.teacher-recommendation-list .recommendation-high { border-left-color: var(--gold-400); background: var(--gold-soft); }
.teacher-recommendation-list p { margin: 6px 0; color: var(--text-secondary); }
.teacher-recommendation-list small,
.teacher-privacy-note { color: var(--text-muted); }
.teacher-privacy-note { margin: 14px 0 0; }

.teacher-grid {
  display: grid;
  grid-template-columns: minmax(620px, 1.25fr) minmax(360px, .75fr);
  gap: 16px;
}

.class-map-panel,
.trend-panel,
.misconception-panel,
.attention-panel {
  padding: 22px;
}

.heat-legend {
  display: flex;
  gap: 10px;
  color: var(--text-muted);
  font-size: 7px;
}

.heat-legend span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.heat-legend i {
  width: 7px;
  height: 7px;
  border-radius: 2px;
}

.heat-legend .h1 { background: rgba(255,109,121,.65); }
.heat-legend .h2 { background: rgba(244,201,107,.65); }
.heat-legend .h3 { background: rgba(54,217,208,.65); }

.heatmap-table {
  display: grid;
  gap: 4px;
  margin-top: 19px;
}

.heat-row {
  display: grid;
  grid-template-columns: 80px repeat(6, 1fr);
  gap: 4px;
  align-items: center;
}

.heat-row > * {
  display: grid;
  min-height: 33px;
  place-items: center;
  border-radius: 6px;
  font-size: 7px;
}

.heat-row strong {
  justify-content: start;
  color: var(--text-secondary);
  font-weight: 550;
}

.heat-header span {
  color: var(--text-muted);
  font-size: 7px;
}

.heat-row i {
  font-family: var(--font-mono);
  font-style: normal;
}

.heat-4 { color: var(--cyan-300); background: rgba(54,217,208,.18); }
.heat-3 { color: #a2dfd8; background: rgba(54,217,208,.1); }
.heat-2 { color: var(--gold-400); background: rgba(244,201,107,.12); }
.heat-1 { color: var(--rose-400); background: rgba(255,109,121,.12); }

.heatmap-insight {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: 17px;
  padding: 11px;
  border: 1px solid rgba(54,217,208,.1);
  border-radius: 9px;
  background: var(--cyan-soft);
}

.heatmap-insight > span {
  color: var(--cyan-300);
}

.heatmap-insight p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 8px;
  line-height: 1.6;
}

.heatmap-insight strong {
  color: var(--text-primary);
}

.trend-panel select {
  padding: 5px 7px;
  border: 1px solid var(--line-soft);
  border-radius: 7px;
  outline: 0;
  color: var(--text-secondary);
  background: var(--ink-800);
  font-size: 7px;
}

.trend-chart {
  position: relative;
  height: 260px;
  margin-top: 20px;
  padding: 5px 0 25px 27px;
  background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 100% 55px;
}

.trend-chart svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.chart-area {
  fill: url(#chartFill);
}

.chart-line {
  fill: none;
  stroke: var(--cyan-400);
  stroke-width: 3;
  vector-effect: non-scaling-stroke;
  filter: drop-shadow(0 0 6px rgba(54,217,208,.3));
}

.chart-points circle {
  fill: var(--ink-800);
  stroke: var(--cyan-400);
  stroke-width: 3;
  vector-effect: non-scaling-stroke;
}

.chart-y {
  position: absolute;
  inset: 0 auto 25px 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 6px;
}

.chart-x {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 27px;
  display: flex;
  justify-content: space-between;
  color: var(--text-muted);
  font-size: 6px;
}

.trend-footer {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.trend-footer div {
  padding: 9px;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
}

.trend-footer span,
.trend-footer strong {
  display: block;
}

.trend-footer span {
  color: var(--text-muted);
  font-size: 7px;
}

.trend-footer strong {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 9px;
}

.teacher-bottom-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}

.misconception-list,
.student-alert-list {
  display: grid;
  gap: 5px;
  margin-top: 17px;
}

.misconception-list > div,
.student-alert-list > div {
  display: flex;
  min-height: 57px;
  align-items: center;
  gap: 11px;
  padding: 8px;
  border-radius: 10px;
}

.misconception-list > div:hover,
.student-alert-list > div:hover {
  background: rgba(255,255,255,.025);
}

.rank {
  display: grid;
  width: 31px;
  height: 31px;
  place-items: center;
  border-radius: 9px;
  color: var(--text-muted);
  background: rgba(255,255,255,.035);
  font-family: var(--font-mono);
  font-size: 7px;
}

.rank-one {
  color: var(--rose-400);
  background: var(--rose-soft);
}

.misconception-list > div > div,
.student-alert-list > div > div {
  min-width: 0;
  flex: 1;
}

.misconception-list strong,
.misconception-list small,
.student-alert-list strong,
.student-alert-list small {
  display: block;
}

.misconception-list strong,
.student-alert-list strong {
  font-size: 9px;
}

.misconception-list small,
.student-alert-list small {
  margin-top: 4px;
  color: var(--text-muted);
  font-size: 7px;
}

.misconception-list em {
  color: var(--rose-400);
  font-family: var(--font-mono);
  font-size: 8px;
  font-style: normal;
}

.count-badge {
  display: grid;
  width: 25px;
  height: 25px;
  place-items: center;
  border-radius: 8px;
  color: var(--rose-400);
  background: var(--rose-soft);
  font-family: var(--font-mono);
  font-size: 8px;
}

.student-avatar {
  display: grid;
  width: 31px;
  height: 31px;
  place-items: center;
  border-radius: 9px;
  font-size: 9px;
  font-weight: 700;
}

.coral { color: var(--rose-400); background: var(--rose-soft); }
.purple-bg { color: var(--purple-300); background: var(--purple-soft); }
.cyan-bg { color: var(--cyan-300); background: var(--cyan-soft); }

.student-alert-list button {
  padding: 5px 8px;
  border: 1px solid var(--line-soft);
  border-radius: 6px;
  color: var(--text-secondary);
  background: transparent;
  cursor: pointer;
  font-size: 7px;
}

.student-alert-list button:hover {
  color: var(--cyan-300);
}

@keyframes dashFlow {
  to { stroke-dashoffset: -110; }
}

@keyframes spinSlow {
  to { transform: rotate(360deg); }
}

@keyframes softPulse {
  50% { box-shadow: 0 0 16px rgba(142,124,255,.35); }
}

@media (max-width: 1300px) {
  .hero-panel {
    grid-template-columns: 1.05fr .95fr;
  }

  .metric-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .diagnosis-layout,
  .path-layout,
  .qa-layout,
  .practice-layout,
  .teacher-grid {
    grid-template-columns: 1fr;
  }

  .diagnosis-aside {
    grid-template-columns: 1fr 1fr;
  }

  .path-detail,
  .agent-trace {
    min-height: auto;
  }

  .case-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 1020px) {
  .hero-panel {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 390px;
  }

  .hero-copy {
    padding-bottom: 20px;
  }

  .teacher-metrics {
    grid-template-columns: repeat(3, 1fr);
  }

  .teacher-detail-summary { grid-template-columns: repeat(3, minmax(0, 1fr)); }

  .teacher-bottom-grid,
  .analysis-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .hero-copy {
    padding: 29px 22px 12px;
  }

  .hero-copy h1 {
    font-size: 36px;
  }

  .hero-visual {
    min-height: 340px;
  }

  .node-large {
    right: 8%;
  }

  .metric-grid,
  .case-grid,
  .teacher-metrics,
  .result-breakdown,
  .diagnosis-aside,
  .teacher-bottom-grid {
    grid-template-columns: 1fr;
  }

  .path-toolbar,
  .quiz-footer,
  .practice-footer,
  .analysis-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .path-toolbar {
    display: flex;
  }

  .teacher-student-browser-heading { align-items: stretch; flex-direction: column; }
  .teacher-student-browser-heading form { grid-template-columns: 1fr; }
  .teacher-student-row { grid-template-columns: 42px 1fr; }
  .teacher-student-row > span:nth-child(n+3) { grid-column: 2; }
  .teacher-student-row > span:last-child { text-align: left; }
  .teacher-detail-summary,
  .teacher-detail-grid { grid-template-columns: 1fr; }

  .path-filters {
    flex-wrap: wrap;
  }

  .time-budget {
    margin-left: 0;
  }

  .path-node {
    grid-template-columns: 45px 40px 1fr;
  }

  .path-duration {
    display: none;
  }

  .analysis-heading {
    display: flex;
  }

  .mastery-change {
    width: 100%;
  }

  .answer-evidence {
    grid-template-columns: 1fr;
  }

  .teacher-actions {
    width: 100%;
  }

  .teacher-actions .button {
    flex: 1;
  }

  .heatmap-table {
    overflow-x: auto;
  }

  .heat-row {
    min-width: 650px;
  }
}