:root {
  --lab-bg: #f4efe6;
  --lab-ink: #1f2933;
  --lab-muted: #5b6670;
  --lab-surface: rgba(255, 251, 244, 0.92);
  --lab-border: rgba(32, 58, 67, 0.14);
  --lab-accent: #0f766e;
  --lab-accent-strong: #115e59;
  --lab-shadow: 0 18px 50px rgba(20, 33, 44, 0.12);
  --lab-radius: 24px;
}

body.lab-page {
  margin: 0;
  min-height: 100vh;
  padding: 24px;
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.16), transparent 28%),
    radial-gradient(circle at top right, rgba(217, 119, 6, 0.16), transparent 24%),
    linear-gradient(180deg, #faf6ef 0%, var(--lab-bg) 100%);
  color: var(--lab-ink);
  font: 16px/1.6 "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

body.lab-page *,
body.lab-page *::before,
body.lab-page *::after {
  box-sizing: border-box;
}

body.lab-page a {
  color: var(--lab-accent-strong);
}

.lab-shell {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}

.lab-main,
.lab-aside {
  display: grid;
  gap: 24px;
}

.lab-hero {
  order: 1;
}

.lab-stage-panel {
  order: 2;
}

.lab-control-grid {
  order: 3;
}

.lab-scenario-panel {
  order: 4;
}

.lab-share-panel {
  order: 5;
}

.lab-shell,
.lab-main,
.lab-aside,
.lab-grid,
.lab-panel,
.lab-sim-stage {
  min-width: 0;
}

.lab-hero,
.lab-panel {
  background: var(--lab-surface);
  border: 1px solid var(--lab-border);
  border-radius: var(--lab-radius);
  box-shadow: var(--lab-shadow);
  backdrop-filter: blur(10px);
}

.lab-hero {
  overflow: hidden;
  position: relative;
  padding: 28px 32px;
}

.lab-hero::after {
  content: "";
  position: absolute;
  inset: auto -40px -40px auto;
  width: 180px;
  height: 180px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(15, 118, 110, 0.14), transparent 70%);
  pointer-events: none;
}

.lab-breadcrumbs {
  margin-bottom: 12px;
  color: var(--lab-muted);
  font-size: 0.92rem;
}

.lab-breadcrumbs a {
  color: inherit;
  text-decoration: none;
}

.lab-breadcrumbs a:hover {
  color: var(--lab-accent-strong);
}

.lab-hero h1 {
  margin: 0 0 10px;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.lab-hero p {
  margin: 0;
  max-width: 880px;
  color: var(--lab-muted);
  font-size: 1.02rem;
}

.lab-meta {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.lab-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(15, 118, 110, 0.14);
  color: var(--lab-ink);
  font-size: 0.9rem;
}

.lab-grid {
  display: grid;
  grid-template-columns: minmax(280px, 380px) minmax(0, 1fr);
  gap: 24px;
}

.lab-panel {
  padding: 24px;
}

.lab-panel h2 {
  margin: 0 0 8px;
  font-size: 1.28rem;
  font-weight: 700;
}

.lab-panel h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 700;
}

.lab-stage-panel h2 {
  margin-bottom: 14px;
}

.lab-stage-chat-grid {
  order: 2;
  display: flex;
  flex-wrap: nowrap;
  gap: 24px;
  align-items: stretch;
  min-width: 0;
}

.lab-stage-chat-grid > * {
  min-width: 0;
  margin: 0;
}

.lab-stage-chat-grid > .lab-stage-panel,
.lab-stage-chat-grid > [class*="stage"] {
  order: 0;
  flex: 0 1 auto;
  width: auto;
  max-width: 100%;
}

.lab-stage-chat-grid > .lab-chat-panel {
  order: 1;
  flex: 1 1 320px;
  min-width: 280px;
}

.lab-panel p:last-child,
.lab-panel ul:last-child,
.lab-panel ol:last-child {
  margin-bottom: 0;
}

.lab-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.lab-summary-card {
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(17, 94, 89, 0.12);
}

.lab-summary-card strong {
  display: block;
  margin-top: 6px;
  font-size: 1.4rem;
  line-height: 1.1;
}

.lab-summary-card span {
  color: var(--lab-muted);
  font-size: 0.88rem;
}

.lab-note-list,
.lab-link-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--lab-muted);
}

.lab-note-list li + li,
.lab-link-list li + li {
  margin-top: 8px;
}

.lab-scenario-list {
  display: grid;
  gap: 12px;
}

.lab-scenario-card {
  width: 100%;
  text-align: left;
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid rgba(17, 94, 89, 0.18);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(245, 250, 248, 0.92));
  color: var(--lab-ink);
  cursor: pointer;
  transition: transform 120ms ease, box-shadow 120ms ease, border-color 120ms ease;
}

.lab-scenario-card:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(15, 118, 110, 0.12);
  border-color: rgba(15, 118, 110, 0.36);
}

.lab-scenario-card strong {
  display: block;
  margin-bottom: 4px;
  font-size: 0.98rem;
}

.lab-scenario-card span {
  display: block;
  color: var(--lab-muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.lab-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.lab-actions input[type="text"] {
  flex: 1 1 320px;
  min-width: 0;
}

.lab-button,
.lab-config button,
.lab-config input[type="button"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--lab-accent), var(--lab-accent-strong));
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform 120ms ease, box-shadow 120ms ease;
}

.lab-button:hover,
.lab-config button:hover,
.lab-config input[type="button"]:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(15, 118, 110, 0.18);
}

.lab-button.secondary {
  background: #fff;
  color: var(--lab-accent-strong);
  border: 1px solid rgba(17, 94, 89, 0.2);
}

.lab-config {
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  column-width: auto;
  column-gap: 0;
}

.lab-config > h2:first-child {
  position: static;
  margin-bottom: 12px;
}

.lab-config > *:nth-child(2) {
  margin-top: 0;
}

.lab-config > .form-item {
  width: auto;
  display: block;
  margin: 0 0 18px;
  padding: 0;
}

.lab-config > .form-item:last-child {
  margin-bottom: 0;
}

.lab-config > .form-item > h3 {
  margin-left: 0;
}

.lab-config label {
  display: block;
  margin-bottom: 6px;
}

.lab-config input[type="range"] {
  width: 100%;
}

.lab-config input[type="text"],
.lab-config select {
  width: 100%;
  min-height: 40px;
  padding: 8px 12px;
  border-radius: 12px;
  border: 1px solid rgba(31, 41, 51, 0.18);
  background: rgba(255, 255, 255, 0.85);
}

.lab-config .description {
  color: var(--lab-muted);
}

.lab-sim-stage {
  min-width: 0;
  max-width: 100%;
  padding: 18px;
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.85), rgba(249, 245, 239, 0.92));
  border: 1px solid rgba(31, 41, 51, 0.08);
}

.lab-sim-stage .simulation {
  margin: 0;
  padding: 0;
  border: 0;
  box-shadow: none;
  background: transparent;
}

.lab-sim-stage svg,
.lab-sim-stage canvas {
  display: block;
  max-width: 100%;
  height: auto;
}

.lab-status {
  margin-top: 10px;
  color: var(--lab-muted);
  font-size: 0.92rem;
}

.lab-ai-panel {
  position: static;
}

.lab-chat-panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  height: 100%;
  overflow: hidden;
}

.coze-chat {
  display: flex;
  flex-direction: column;
  min-height: 0;
  height: 100%;
  overflow: hidden;
}

.coze-chat-header {
  margin-bottom: 14px;
}

.coze-chat-header h2,
.coze-chat-header h3 {
  margin: 0 0 8px;
}

.coze-chat-header p {
  margin: 0;
  color: var(--lab-muted);
}

.coze-chat-messages {
  flex: 1 1 auto;
  min-height: 260px;
  padding: 14px;
  border-radius: 18px;
  border: 1px solid rgba(17, 94, 89, 0.12);
  background: rgba(255, 255, 255, 0.74);
  overflow-y: auto;
  display: grid;
  gap: 12px;
}

.coze-chat-empty {
  color: var(--lab-muted);
  font-size: 0.94rem;
  line-height: 1.6;
}

.coze-chat-message {
  max-width: 100%;
}

.coze-chat-message[data-role="user"] {
  justify-self: end;
}

.coze-chat-bubble {
  padding: 12px 14px;
  border-radius: 18px;
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.65;
}

.coze-chat-message[data-role="assistant"] .coze-chat-bubble {
  background: rgba(15, 118, 110, 0.08);
  border: 1px solid rgba(15, 118, 110, 0.14);
}

.coze-chat-message[data-role="user"] .coze-chat-bubble {
  background: linear-gradient(135deg, var(--lab-accent), var(--lab-accent-strong));
  color: #fff;
}

.coze-chat-meta {
  margin-top: 4px;
  color: var(--lab-muted);
  font-size: 0.82rem;
}

.coze-chat-prompts {
  flex: 0 0 auto;
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.coze-chat-prompt {
  width: 100%;
  text-align: left;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(17, 94, 89, 0.14);
  background: rgba(255, 255, 255, 0.9);
  color: var(--lab-ink);
  cursor: pointer;
}

.coze-chat-prompt:hover {
  border-color: rgba(15, 118, 110, 0.32);
}

.coze-chat-form {
  flex: 0 0 auto;
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.coze-chat-input {
  width: 100%;
  min-height: 108px;
  padding: 12px 14px;
  border-radius: 18px;
  border: 1px solid rgba(31, 41, 51, 0.18);
  background: rgba(255, 255, 255, 0.94);
  color: var(--lab-ink);
  font: inherit;
  resize: vertical;
}

.coze-chat-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.coze-chat-actions .lab-button {
  min-width: 116px;
}

.coze-chat-status {
  flex: 0 0 auto;
  margin-top: 10px;
}

.coze-chat--inactive .coze-chat-input,
.coze-chat--inactive .coze-chat-actions .lab-button.primary {
  opacity: 0.6;
}

.lab-ai-placeholder {
  padding: 18px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(17, 94, 89, 0.08), rgba(217, 119, 6, 0.08));
  border: 1px solid rgba(17, 94, 89, 0.12);
}

.lab-ai-placeholder p {
  color: var(--lab-muted);
}

.lab-prompt-list {
  margin: 16px 0 0;
  padding-left: 1.1rem;
  color: var(--lab-muted);
}

.lab-prompt-list li + li {
  margin-top: 8px;
}

.lab-home-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.lab-home-card {
  display: block;
  padding: 20px;
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(251, 247, 240, 0.92));
  border: 1px solid rgba(15, 118, 110, 0.12);
  color: inherit;
  text-decoration: none;
  transition: transform 120ms ease, box-shadow 120ms ease, border-color 120ms ease;
}

.lab-home-card:hover {
  transform: translateY(-2px);
  border-color: rgba(15, 118, 110, 0.34);
  box-shadow: 0 14px 28px rgba(15, 118, 110, 0.12);
}

.lab-home-card strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1rem;
}

.lab-home-card span {
  color: var(--lab-muted);
  font-size: 0.94rem;
}

.lab-inline-code {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(31, 41, 51, 0.06);
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.88rem;
}

@media (max-width: 1420px) {
  .lab-stage-chat-grid {
    flex-direction: column;
  }

  .lab-chat-panel {
    height: auto;
    overflow: visible;
  }

  .coze-chat {
    min-height: 520px;
    overflow: visible;
  }
}

@media (max-width: 900px) {
  body.lab-page {
    padding: 16px;
  }

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

  .lab-summary-grid {
    grid-template-columns: 1fr;
  }

  .lab-hero,
  .lab-panel {
    padding: 20px;
  }

  .lab-sim-stage {
    padding: 14px;
    overflow-x: auto;
    overflow-y: hidden;
  }

  .coze-chat {
    min-height: 480px;
  }

  .coze-chat-input {
    min-height: 96px;
  }
}