* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
}

:root {
  --mobile-workbench-height: calc(100vh - 58px);
  --primary: #6889a3;
  --primary-light: #88a6bc;
  --primary-dark: #486277;
  --bg: #edf1f5;
  --bg-card: rgba(255, 255, 255, 0.72);
  --bg-input: #f4f7fa;
  --bg-soft: #e9eef3;
  --panel-tint: #f7f9fb;
  --text: #18222d;
  --text-dim: #667687;
  --accent: #6889a3;
  --accent2: #b8a289;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --border: rgba(109, 125, 143, 0.18);
  --shadow: 0 18px 54px rgba(110, 126, 144, 0.12);
  --shadow-soft: 0 10px 24px rgba(110, 126, 144, 0.08);
  --radius: 18px;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(104, 137, 163, 0.12), transparent 26%),
    radial-gradient(circle at top right, rgba(184, 162, 137, 0.1), transparent 22%),
    linear-gradient(180deg, #f7f9fb 0%, #ebf0f4 100%);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
  overflow-x: hidden;
}

.brand-header {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: 18px 28px 12px;
  background: rgba(249, 251, 253, 0.82);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
}

.brand-back {
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  color: var(--text-dim);
  text-decoration: none;
  background: rgba(255, 255, 255, 0.48);
}

.brand-copy h1 {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.brand-kicker {
  color: #8191a0;
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.brand-question,
.brand-note {
  color: var(--text-dim);
  line-height: 1.7;
}

.brand-question {
  margin-top: 8px;
}

.brand-note {
  max-width: 18rem;
  font-size: 0.92rem;
  text-align: right;
}

.tab-nav {
  display: flex;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 24px;
  background: rgba(250, 252, 253, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}

.tab-btn {
  padding: 10px 18px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(248, 251, 254, 0.92);
  color: var(--text-dim);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.03);
}

.tab-btn:hover {
  color: var(--text);
  background: #fdfefe;
  border-color: #bfd3f2;
  transform: translateY(-1px);
}

.tab-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 10px 24px rgba(104, 137, 163, 0.24);
}

.app-main {
  flex: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.tab-panel {
  display: none;
  flex: 1;
  height: 100%;
  overflow: hidden;
}

.tab-panel.active {
  display: flex;
}

.layout {
  display: flex;
  flex: 1;
  height: 100%;
  min-height: 0;
  overflow: hidden;
  gap: 14px;
  padding: 14px;
}

.sidebar {
  width: 300px;
  min-width: 300px;
  background: linear-gradient(180deg, rgba(251, 252, 253, 0.92) 0%, rgba(243, 247, 250, 0.92) 100%);
  border: 1px solid rgba(109, 125, 143, 0.14);
  border-radius: 18px;
  overflow-y: auto;
  padding: 14px;
  flex-shrink: 0;
  box-shadow: var(--shadow);
}

.param-group {
  margin-bottom: 12px;
  padding: 10px 12px;
  background: linear-gradient(180deg, rgba(255,255,255,0.84) 0%, rgba(244,247,250,0.82) 100%);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: 0 8px 20px rgba(110, 126, 144, 0.06);
}

.param-group h3 {
  font-size: 0.92rem;
  color: var(--accent);
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid #e9eff7;
  letter-spacing: 0.02em;
  cursor: pointer;
  user-select: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.param-group h3::after {
  content: '▼';
  font-size: 0.6rem;
  transition: transform 0.2s;
}

.param-group.collapsed h3::after {
  transform: rotate(-90deg);
}

.param-group.collapsed h3 {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.param-group .group-body {
  overflow: hidden;
  transition: max-height 0.25s ease;
  max-height: 1200px;
}

.param-group.collapsed .group-body {
  max-height: 0;
}

.param-group label {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  font-size: 0.88rem;
  color: var(--text-dim);
  margin-bottom: 10px;
  gap: 8px;
}

.param-group label input[type="range"] {
  order: 1;
  flex: 1;
  min-width: 0;
}

.param-group label span {
  order: 2;
  min-width: 48px;
  text-align: right;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.86rem;
}

.param-group label input[type="range"],
.param-group label span {
  margin-top: -2px;
}

.param-group input[type="range"] {
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: linear-gradient(90deg, #cadbf2 0%, #dfe8f2 100%);
  border-radius: 999px;
  outline: none;
}

.param-group input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  cursor: pointer;
  border: 4px solid var(--accent);
  box-shadow: 0 2px 8px rgba(22, 119, 255, 0.24);
}

.param-group select {
  flex: 1;
  padding: 8px 10px;
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 0.88rem;
}

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.86rem;
  padding: 7px 0;
  border-bottom: 1px dashed #e5edf7;
}

.info-row span:first-child {
  color: var(--text-dim);
}

.info-row span:last-child {
  color: var(--success);
  font-weight: 600;
  text-align: right;
}

.btn-group {
  display: flex;
  flex-wrap: nowrap;
  gap: 6px;
  padding: 8px 0;
}

.btn {
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius);
  font-size: 0.88rem;
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-light);
}

.btn-primary.running {
  background: var(--danger);
}

.btn-secondary {
  background: #f7fafc;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-soft);
}

.check-label {
  display: flex !important;
  align-items: center;
  justify-content: space-between;
  gap: 8px !important;
  font-size: 0.84rem !important;
  color: var(--text-dim);
  cursor: pointer;
  margin-bottom: 4px !important;
}

.check-label input[type="checkbox"] {
  accent-color: var(--primary);
}

.canvas-area {
  flex: 1 0 0;
  background:
    radial-gradient(circle at top, rgba(22, 119, 255, 0.045), transparent 26%),
    linear-gradient(180deg, #f4f8fb 0%, #edf3f8 100%);
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  border: 1px solid rgba(217, 226, 240, 0.95);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.canvas-area canvas {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
}

.canvas-controls {
  position: absolute;
  top: 12px;
  left: 12px;
  display: flex;
  gap: 4px;
  z-index: 2;
  flex-wrap: wrap;
}

.canvas-exports {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  gap: 4px;
  z-index: 2;
  flex-wrap: wrap;
}

.canvas-controls .btn,
.canvas-exports .btn {
  padding: 6px 12px;
  font-size: 0.8rem;
  background: rgba(248, 251, 253, 0.94);
  border: 1px solid rgba(217, 226, 240, 0.98);
  color: var(--text);
  backdrop-filter: blur(10px);
}

.canvas-controls .btn:hover,
.canvas-exports .btn:hover {
  background: rgba(241, 246, 251, 0.98);
}

.canvas-controls .btn-primary {
  background: rgba(22, 119, 255, 0.92);
  border-color: var(--primary);
  color: #fff;
}

.canvas-controls .btn-primary:hover {
  background: rgba(59, 130, 246, 0.95);
}

.canvas-controls .btn-primary.running {
  background: rgba(248, 113, 113, 0.9);
  border-color: var(--danger);
}

.curves-area {
  width: 340px;
  min-width: 340px;
  background:
    radial-gradient(circle at top right, rgba(19, 194, 194, 0.04), transparent 22%),
    linear-gradient(180deg, #f4f8fb 0%, #edf3f8 100%);
  border: 1px solid rgba(217, 226, 240, 0.95);
  border-radius: 18px;
  padding: 8px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
  box-shadow: var(--shadow);
}

.curves-area canvas {
  position: absolute;
  top: 8px;
  left: 8px;
  display: block;
}

.app-footer {
  text-align: center;
  padding: 16px 18px 22px;
  font-size: 0.92rem;
  color: var(--text-dim);
  background: rgba(246, 249, 251, 0.82);
  border-top: 1px solid var(--border);
}

.toolbox {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.tool-btn {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #f7fafc;
  color: var(--text);
  font-size: 0.84rem;
  cursor: pointer;
  transition: all 0.15s;
  user-select: none;
}

.tool-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
}

.tool-btn.active {
  background: var(--primary);
  border-color: var(--primary-light);
  color: #fff;
}

.preset-btn {
  padding: 7px 12px;
  border: 1px solid #bfd2e6;
  border-radius: 10px;
  background: #eaf2fb;
  color: #334155;
  font-size: 0.82rem;
  cursor: pointer;
  transition: all 0.15s;
  margin: 4px 4px 0 0;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.05);
}

.preset-btn:hover {
  background: #dbe8f6;
  color: #1e293b;
  border-color: #9fb9d6;
}

#panel-gear-train .canvas-area,
#panel-gear-train .curves-area {
  background:
    radial-gradient(circle at 34% 18%, rgba(104, 137, 163, 0.12), transparent 28%),
    radial-gradient(circle at 78% 82%, rgba(184, 162, 137, 0.10), transparent 30%),
    linear-gradient(180deg, #f5f8fb 0%, #edf3f8 100%);
}

#panel-gear-train .preset-btn.active {
  background: linear-gradient(135deg, #6889a3, #88a6bc);
  border-color: #6889a3;
  color: #fff;
  box-shadow: 0 8px 20px rgba(104, 137, 163, 0.22);
}

#panel-gear-train .gt-mode-group {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding-top: 8px;
}

#panel-gear-train .gt-mode-group .preset-btn {
  width: 100%;
  margin: 0;
  padding: 8px 6px;
  white-space: nowrap;
  text-align: center;
}

#panel-gear-train .gt-mode-group .preset-btn:last-child {
  grid-column: 1 / -1;
}

.dof-formula {
  text-align: center;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent);
  padding: 10px;
  background: #f4f8fc;
  border-radius: var(--radius);
  margin-bottom: 8px;
  letter-spacing: 0.03em;
}

.dof-result {
  text-align: center;
  padding: 10px;
  background: #f4f8fc;
  border-radius: var(--radius);
  margin-top: 8px;
  border: 1px solid var(--border);
}

.dof-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--success);
}

.dof-meaning {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-top: 4px;
}

.dof-detail {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 6px;
  padding: 4px;
  line-height: 1.6;
}

.dof-canvas-area {
  cursor: crosshair;
}

.dof-help {
  padding: 12px;
  overflow-y: auto;
}

.help-section {
  margin-bottom: 14px;
  padding: 10px;
  background: linear-gradient(180deg, #f9fbfd 0%, #f1f6fb 100%);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.help-section h4 {
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 6px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border);
}

.help-section p {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 3px;
  line-height: 1.5;
}

.help-section b {
  color: var(--accent);
}

@media (max-width: 0px) {
  .brand-header {
    grid-template-columns: 1fr;
    padding: 16px 16px 12px;
  }
  .brand-note {
    max-width: none;
    text-align: left;
  }
  .tab-nav {
    padding: 10px 12px;
  }
  .layout {
    flex-direction: column;
    height: auto;
    padding: 10px;
  }
  .sidebar {
    width: 100%;
    min-width: unset;
    max-height: 260px;
  }
  .curves-area {
    width: 100%;
    min-width: unset;
    height: 240px;
  }
}


/* Precision workbench redesign */
:root {
  --primary: #2457d6;
  --primary-light: #3b72f0;
  --primary-dark: #163a91;
  --bg: #eef0f3;
  --bg-card: #ffffff;
  --bg-input: #f6f7f9;
  --bg-soft: #edf1f5;
  --panel-tint: #f8fafc;
  --text: #151922;
  --text-dim: #6d7480;
  --accent: #2457d6;
  --accent2: #c26b28;
  --success: #24845c;
  --warning: #c26b28;
  --danger: #b4232d;
  --border: rgba(32, 42, 56, 0.12);
  --shadow: 0 18px 48px rgba(18, 27, 42, 0.10);
  --shadow-soft: 0 8px 22px rgba(18, 27, 42, 0.07);
  --radius: 14px;
}

body {
  background:
    linear-gradient(90deg, rgba(36, 87, 214, 0.035) 1px, transparent 1px),
    linear-gradient(180deg, rgba(36, 87, 214, 0.026) 1px, transparent 1px),
    linear-gradient(180deg, #f5f6f8 0%, #e9edf2 100%);
  background-size: 28px 28px, 28px 28px, auto;
  color: var(--text);
}

.instrument-header {
  grid-template-columns: auto minmax(0, 1fr) minmax(260px, auto);
  padding: 18px 30px;
  background: rgba(250, 251, 253, 0.94);
  border-bottom: 1px solid rgba(22, 28, 38, 0.10);
  box-shadow: 0 1px 0 rgba(255,255,255,0.72) inset, var(--shadow-soft);
}

.brand-back {
  border-radius: 10px;
  background: #ffffff;
  border-color: rgba(22, 28, 38, 0.14);
  color: #2d3542;
  font-weight: 700;
}

.brand-back:hover {
  color: var(--primary);
  border-color: rgba(36, 87, 214, 0.34);
}

.brand-copy h1 {
  font-size: clamp(1.45rem, 2.2vw, 2.15rem);
  letter-spacing: -0.045em;
  line-height: 1.05;
}

.brand-kicker,
.section-kicker {
  display: block;
  color: #7b8492;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.brand-question {
  margin-top: 7px;
  color: #69717e;
  font-size: 0.92rem;
}

.brand-note {
  justify-self: end;
  max-width: 360px;
  padding: 12px 14px;
  border: 1px solid rgba(32, 42, 56, 0.10);
  border-radius: 12px;
  background: #f7f8fa;
  color: #596272;
  text-align: left;
  font-size: 0.9rem;
}

.instrument-tabs {
  gap: 6px;
  padding: 10px 30px;
  background: rgba(246, 248, 251, 0.92);
  border-bottom: 1px solid rgba(22, 28, 38, 0.10);
}

.tab-btn {
  border-radius: 9px;
  padding: 10px 16px;
  background: transparent;
  border: 1px solid transparent;
  box-shadow: none;
  color: #626b78;
}

.tab-btn:hover {
  transform: none;
  background: #fff;
  border-color: rgba(32, 42, 56, 0.10);
}

.tab-btn.active {
  background: #172033;
  border-color: #172033;
  color: #fff;
  box-shadow: 0 10px 22px rgba(23, 32, 51, 0.16);
}

.app-main {
  overflow: hidden;
  width: 100%;
}

.tab-panel.active {
  min-height: 0;
  width: 100%;
  flex: 1 1 auto;
  align-self: stretch;
}

.workbench-panel {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 14px;
  width: 100%;
  max-width: none;
  min-height: 0;
  padding: 16px;
}

.fourbar-workbench {
  grid-template-rows: minmax(0, 1fr);
}

.fourbar-workbench > .panel-heading {
  display: none;
}

.panel-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 22px;
  padding: 18px 20px;
  border: 1px solid rgba(22, 28, 38, 0.10);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255,255,255,0.92), rgba(248,250,252,0.92));
  box-shadow: var(--shadow-soft);
}

.panel-heading h2 {
  font-size: clamp(1.7rem, 2.8vw, 2.6rem);
  letter-spacing: -0.06em;
  line-height: 1;
}

.panel-heading p {
  max-width: 720px;
  margin-top: 10px;
  color: #636b78;
  line-height: 1.7;
}

.status-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.status-chips span,
.workspace-status span,
.workspace-hints span,
.analysis-live {
  border: 1px solid rgba(32, 42, 56, 0.12);
  background: #fff;
  border-radius: 999px;
  padding: 7px 10px;
  color: #5c6572;
  font-size: 0.78rem;
  font-weight: 700;
}

.layout--workbench {
  display: grid;
  grid-template-columns: minmax(320px, 360px) minmax(720px, 1fr) minmax(380px, 460px);
  gap: 14px;
  padding: 0;
  height: 100%;
  width: 100%;
  min-height: 0;
}

.control-console,
.workspace-stage,
.analysis-console {
  border-radius: 18px;
  border: 1px solid rgba(22, 28, 38, 0.11);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow);
}

.control-console {
  width: auto;
  min-width: 0;
  padding: 14px;
  overflow-y: auto;
}

.console-title {
  display: grid;
  gap: 2px;
  margin: 2px 2px 14px;
}

.console-title span {
  color: #7a838f;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.console-title strong {
  font-size: 1.15rem;
}

.param-group,
.control-block {
  margin-bottom: 12px;
  padding: 0;
  border-radius: 14px;
  background: #fff;
  border: 1px solid rgba(32, 42, 56, 0.10);
  box-shadow: none;
  overflow: hidden;
}

.param-group h3 {
  margin: 0;
  padding: 13px 14px;
  border-bottom: 1px solid rgba(32, 42, 56, 0.08);
  color: #202836;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  background: linear-gradient(180deg, #fbfcfe, #f7f9fb);
}

.param-group h3::after {
  content: '?';
  color: #8a93a0;
}

.param-group.collapsed h3 {
  border-bottom: none;
}

.param-group .group-body {
  padding: 13px 14px 14px;
  max-height: 1600px;
}

.param-group.collapsed .group-body {
  padding-top: 0;
  padding-bottom: 0;
}

.param-group label {
  display: grid;
  grid-template-columns: minmax(92px, 1fr) minmax(120px, 1.6fr) 50px;
  gap: 10px;
  align-items: center;
  margin-bottom: 11px;
  color: #596272;
  font-size: 0.82rem;
}

.param-group label input[type="range"] {
  order: initial;
  width: 100%;
}

.param-group label span {
  order: initial;
  min-width: 0;
  padding: 4px 6px;
  border-radius: 7px;
  background: #f3f6fb;
  color: #163a91;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.8rem;
}

.param-group input[type="range"] {
  height: 4px;
  background: linear-gradient(90deg, #2457d6, #d8dee8);
}

.param-group input[type="range"]::-webkit-slider-thumb {
  width: 16px;
  height: 16px;
  border: 3px solid #2457d6;
  box-shadow: 0 2px 8px rgba(36, 87, 214, 0.26);
}

.toggle-row,
.check-label {
  grid-template-columns: minmax(0, 1fr) auto !important;
  padding: 9px 10px;
  border: 1px solid rgba(32, 42, 56, 0.10);
  border-radius: 10px;
  background: #f8fafc;
  margin-bottom: 8px !important;
  color: #374151 !important;
}

.check-label input[type="checkbox"] {
  width: 34px;
  height: 18px;
  appearance: none;
  border-radius: 999px;
  background: #cbd3df;
  position: relative;
  cursor: pointer;
  transition: background 0.18s ease;
}

.check-label input[type="checkbox"]::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  top: 2px;
  left: 2px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.16);
  transition: transform 0.18s ease;
}

.check-label input[type="checkbox"]:checked {
  background: #2457d6;
}

.check-label input[type="checkbox"]:checked::after {
  transform: translateX(16px);
}

.toggle-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
}

.nested-control {
  margin: 8px 0 12px;
  padding: 10px;
  border-radius: 12px;
  background: #f7f9fc;
  border: 1px solid rgba(32, 42, 56, 0.08);
}

.metric-stack {
  display: grid;
  gap: 8px;
}

.metric-stack.compact {
  margin-top: 8px;
}

.info-row {
  padding: 9px 0;
  border-bottom: 1px solid rgba(32, 42, 56, 0.08);
}

.info-row span:first-child {
  color: #68717e;
}

.info-row span:last-child {
  color: #1f6a4b;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-weight: 800;
}

.preset-stack {
  display: grid;
  gap: 8px;
}

.preset-btn,
.tool-btn {
  border-radius: 9px;
  background: #f7f9fc;
  border: 1px solid rgba(32, 42, 56, 0.12);
  color: #344052;
  box-shadow: none;
}

.preset-btn:hover,
.tool-btn:hover {
  background: #eef3ff;
  border-color: rgba(36, 87, 214, 0.36);
  color: #163a91;
}

.full-btn {
  width: 100%;
}

.btn {
  border-radius: 9px;
  padding: 9px 14px;
  box-shadow: none;
}

.btn-primary {
  background: #2457d6;
  color: #fff;
}

.btn-primary:hover {
  background: #1d49b7;
}

.btn-primary.running {
  background: #b4232d;
}

.btn-secondary {
  background: #fff;
  border: 1px solid rgba(32, 42, 56, 0.14);
  color: #303948;
}

.workspace-stage {
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  position: relative;
  background:
    linear-gradient(90deg, rgba(36,87,214,0.045) 1px, transparent 1px),
    linear-gradient(180deg, rgba(36,87,214,0.04) 1px, transparent 1px),
    radial-gradient(circle at 50% 18%, rgba(36, 87, 214, 0.08), transparent 30%),
    #f8fafc;
  background-size: 30px 30px, 30px 30px, auto, auto;
}

.workspace-header {
  position: absolute;
  z-index: 3;
  left: 18px;
  right: 18px;
  top: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(255,255,255,0.88);
  border: 1px solid rgba(32,42,56,0.10);
  backdrop-filter: blur(14px);
}

.workspace-header h3,
.analysis-header h3 {
  font-size: 1.15rem;
}

.workspace-status {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 7px;
}

.workspace-status b {
  color: #172033;
}

.canvas-frame {
  position: absolute;
  inset: 92px 18px 48px;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(32,42,56,0.11);
  background: rgba(255,255,255,0.45);
}

.workspace-stage .canvas-frame canvas,
.workspace-stage #fb-canvas {
  position: absolute;
  inset: 0;
  display: block;
}

.workspace-actions.canvas-controls {
  top: auto;
  left: 18px;
  bottom: 12px;
  gap: 8px;
  z-index: 4;
}

.workspace-actions--right.canvas-exports {
  top: auto;
  right: 18px;
  bottom: 12px;
  z-index: 4;
}

.canvas-controls .btn,
.canvas-exports .btn {
  padding: 9px 14px;
  font-size: 0.86rem;
  backdrop-filter: blur(12px);
}

.canvas-controls .btn-primary {
  background: #2457d6;
  border-color: #2457d6;
}

.workspace-hints {
  position: absolute;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  display: flex;
  gap: 7px;
  z-index: 3;
  pointer-events: none;
}

.workspace-hints span {
  background: rgba(255,255,255,0.78);
}

.analysis-console {
  width: auto;
  min-width: 0;
  padding: 14px;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  gap: 12px;
  overflow: hidden;
  background: #fbfcfe;
}

.analysis-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 10px;
}

.analysis-live {
  color: #1f6a4b;
  background: #ecf8f2;
  border-color: rgba(36,132,92,0.18);
}

.analysis-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  padding: 5px;
  background: #eef2f7;
  border-radius: 11px;
}

.analysis-tab {
  border: none;
  border-radius: 8px;
  padding: 8px 6px;
  background: transparent;
  color: #667080;
  font-weight: 800;
  cursor: pointer;
}

.analysis-tab:hover {
  color: #172033;
}

.analysis-tab.active {
  background: #fff;
  color: #163a91;
  box-shadow: 0 4px 12px rgba(18, 27, 42, 0.08);
}

.analysis-pane {
  display: none;
  min-height: 0;
}

.analysis-pane.active {
  display: block;
  height: 100%;
}

.chart-card {
  height: 100%;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 10px;
}

.chart-card__head {
  display: grid;
  gap: 8px;
  padding: 12px;
  border: 1px solid rgba(32,42,56,0.10);
  border-radius: 12px;
  background: #fff;
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.76rem;
  color: #647083;
}

.chart-legend span::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 5px;
}

.legend-gamma::before { background: #c26b28; }
.legend-theta::before { background: #2457d6; }

.chart-canvas-wrap {
  position: relative;
  min-height: 320px;
  height: 100%;
  border-radius: 14px;
  border: 1px solid rgba(32,42,56,0.10);
  background: #fff;
  overflow: hidden;
}

.analysis-console .chart-canvas-wrap canvas,
.analysis-console #fb-curves {
  position: absolute;
  inset: 0;
  display: block;
}

.analysis-metrics {
  display: grid;
  gap: 10px;
}

.analysis-metrics div,
.note-panel {
  padding: 14px;
  border-radius: 12px;
  border: 1px solid rgba(32,42,56,0.10);
  background: #fff;
}

.analysis-metrics div {
  display: grid;
  gap: 7px;
}

.analysis-metrics span {
  color: #6b7480;
  font-size: 0.78rem;
}

.analysis-metrics strong {
  color: #172033;
  font-size: 1.05rem;
  font-family: "SFMono-Regular", Consolas, monospace;
}

.note-panel h4 {
  margin-bottom: 10px;
  color: #172033;
}

.note-panel p {
  color: #626b78;
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 10px;
}

.synth-block #fb-synth-info {
  max-width: 180px;
  word-break: break-all;
  white-space: normal;
}

@media (max-width: 0px) {
  .layout--workbench {
    grid-template-columns: minmax(280px, 320px) minmax(440px, 1fr) minmax(320px, 360px);
  }

  .workspace-status {
    max-width: 360px;
  }
}

@media (max-width: 0px) {
  .instrument-header {
    grid-template-columns: 1fr;
  }

  .brand-note {
    justify-self: stretch;
    max-width: none;
  }

  .workbench-panel {
    overflow-y: auto;
  }

  .layout--workbench,
  .layout {
    grid-template-columns: 1fr;
    display: grid;
    height: auto;
    overflow: visible;
  }

  .control-console,
  .analysis-console,
  .sidebar,
  .curves-area {
    width: 100%;
    min-width: 0;
    max-height: none;
  }

  .workspace-stage {
    min-height: 640px;
  }
}

@media (max-width: 0px) {
  .instrument-header,
  .instrument-tabs {
    padding-left: 14px;
    padding-right: 14px;
  }

  .workbench-panel {
    padding: 10px;
  }

  .panel-heading {
    display: grid;
    padding: 16px;
  }

  .status-chips {
    justify-content: flex-start;
  }

  .param-group label {
    grid-template-columns: 1fr 52px;
  }

  .param-group label input[type="range"] {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .workspace-header {
    display: grid;
  }

  .workspace-status {
    justify-content: flex-start;
  }

  .canvas-frame {
    top: 146px;
  }

  .workspace-hints {
    display: none;
  }

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

/* Product-grade mechanism workbench, 2026-04-22 */
:root {
  --app-bg: #f5f7fb;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --surface-muted: #f1f5f9;
  --line: #dbe3ee;
  --line-soft: #edf1f6;
  --text-strong: #111827;
  --text-main: #273244;
  --text-muted: #64748b;
  --blue: #1f66d1;
  --blue-soft: #eaf2ff;
  --orange: #e57a22;
  --green: #169b62;
  --green-soft: #e8f7ef;
  --radius-sm: 6px;
  --radius-md: 8px;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

html,
body {
  overflow: hidden;
}

body {
  background: var(--app-bg);
  color: var(--text-main);
  font-family: "Inter", "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  letter-spacing: 0;
}

.app-header {
  flex: 0 0 auto;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  box-shadow: none;
  position: relative;
  z-index: 30;
}

.topbar {
  height: 56px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 0 18px;
}

.back-link {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: #334155;
  background: #fff;
  text-decoration: none;
  font-size: 18px;
  line-height: 1;
}

.back-link:hover,
.header-tools button:hover {
  border-color: #b9c6d6;
  background: var(--surface-soft);
}

.title-block {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.title-block h1 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-strong);
  letter-spacing: 0;
}

.title-block span {
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding: 0 10px;
  border-radius: var(--radius-sm);
  background: var(--blue-soft);
  color: var(--blue);
  font-size: 13px;
  font-weight: 600;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-tools button {
  width: 32px;
  height: 32px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: #475569;
  cursor: pointer;
  font-size: 16px;
}

.tab-nav {
  position: static;
  height: 44px;
  display: flex;
  justify-content: center;
  align-items: stretch;
  gap: 20px;
  padding: 0 18px;
  background: var(--surface);
  border-top: 1px solid var(--line-soft);
  border-bottom: 0;
  backdrop-filter: none;
  overflow-x: auto;
}

.tab-btn {
  position: relative;
  min-width: 88px;
  padding: 0 6px;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  color: #334155;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.15s ease, background 0.15s ease;
}

.tab-btn:hover {
  color: var(--blue);
  background: transparent;
  border-color: transparent;
  transform: none;
}

.tab-btn.active {
  color: var(--blue);
  background: transparent;
  border-color: transparent;
  box-shadow: none;
}

.tab-btn.active::after {
  content: "";
  position: absolute;
  left: 6px;
  right: 6px;
  bottom: 0;
  height: 2px;
  background: var(--blue);
  border-radius: 999px 999px 0 0;
}

.app-main {
  flex: 1 1 auto;
  min-height: 0;
  background: var(--app-bg);
}

.tab-panel.active {
  min-height: 0;
}

.workbench-layout {
  display: grid;
  grid-template-columns: 340px minmax(560px, 1fr) 348px;
  gap: 12px;
  width: 100%;
  height: var(--mobile-workbench-height, calc(100vh - 101px));
  padding: 12px;
  overflow: hidden;
}

.control-console,
.workspace-stage,
.analysis-console {
  min-height: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: none;
}

.control-console {
  width: auto;
  min-width: 0;
  padding: 10px;
  overflow-y: auto;
}

.panel-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 4px 4px 10px;
  border-bottom: 1px solid var(--line-soft);
  margin-bottom: 10px;
}

.panel-title span {
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.panel-title strong {
  color: var(--text-strong);
  font-size: 15px;
}

.param-group,
.analysis-section {
  margin: 0 0 10px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: none;
  overflow: hidden;
}

.param-group h3,
.analysis-section h3 {
  min-height: 38px;
  margin: 0;
  padding: 0 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line-soft);
  color: var(--text-main);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  cursor: pointer;
}

.param-group h3::after,
.analysis-section h3::after {
  content: "⌃";
  color: #64748b;
  font-size: 12px;
  transition: transform 0.15s ease;
}

.param-group.collapsed h3,
.analysis-section.collapsed h3 {
  border-bottom: 0;
}

.param-group.collapsed h3::after,
.analysis-section.collapsed h3::after {
  transform: rotate(180deg);
}

.param-group .group-body,
.analysis-section .group-body {
  max-height: 1300px;
  padding: 10px 12px;
  overflow: hidden;
  transition: max-height 0.18s ease, padding 0.18s ease;
}

.param-group.collapsed .group-body,
.analysis-section.collapsed .group-body {
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
}

.param-grid {
  display: grid;
  gap: 10px;
}

.param-group label {
  display: grid;
  grid-template-columns: minmax(76px, 0.95fr) minmax(64px, 1fr) 52px 24px;
  align-items: center;
  gap: 6px;
  margin: 0;
  min-height: 30px;
  color: var(--text-main);
  font-size: 12px;
}

.param-name {
  order: initial;
  min-width: 0;
  padding: 0 !important;
  border: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
  color: var(--text-main);
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.param-name i {
  color: #475569;
  font-style: normal;
  font-family: var(--mono);
}

.param-group input[type="range"] {
  width: 100%;
  height: 4px;
  accent-color: var(--blue);
}

.param-group label > span[id$="-val"],
.param-group label > span:not(.param-name):not(.status-value) {
  order: initial;
  min-width: 0;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0 6px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
  color: #111827;
  font-family: var(--mono);
  font-size: 12px;
}

.param-group em {
  color: var(--text-muted);
  font-style: normal;
  font-size: 11px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: clip;
}

.check-label,
.toggle-row {
  grid-template-columns: 1fr auto !important;
  padding: 6px 8px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
}

.check-label input[type="checkbox"] {
  width: 34px;
  height: 18px;
  accent-color: var(--blue);
}

.check-label span {
  min-width: 0 !important;
  height: auto !important;
  padding: 0 !important;
  border: 0 !important;
  background: transparent !important;
  color: var(--text-main) !important;
  font-family: inherit !important;
  text-align: left !important;
}

.nested-control {
  display: grid;
  gap: 10px;
  padding: 10px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: #fbfdff;
}

.derived-grid,
.summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.derived-grid div,
.summary-grid div {
  min-height: 58px;
  display: grid;
  align-content: center;
  gap: 5px;
  padding: 10px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
}

.derived-grid span,
.summary-grid span {
  color: var(--text-muted);
  font-size: 11px;
}

.derived-grid strong,
.summary-grid strong {
  color: var(--text-strong);
  font-family: var(--mono);
  font-size: 14px;
}

.metric-stack {
  display: grid;
  gap: 0;
}

.info-row {
  display: grid;
  grid-template-columns: minmax(90px, 1fr) auto;
  align-items: center;
  gap: 10px;
  min-height: 30px;
  padding: 3px 0;
  color: var(--text-muted);
  font-size: 12px;
}

.info-row > span:last-child {
  color: var(--text-strong);
  font-family: var(--mono);
  text-align: right;
}

#fb-deadpoint {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 54px;
  min-height: 22px;
  padding: 0 8px;
  border-radius: 999px;
  background: var(--green-soft);
  color: var(--green) !important;
  font-family: inherit;
  font-weight: 700;
}

.toggle-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.preset-stack {
  display: grid;
  gap: 8px;
}

.preset-btn,
.btn {
  min-height: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: #fff;
  color: #273244;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.preset-btn:hover,
.btn-secondary:hover,
.tool-strip button:hover,
.workspace-footer button:hover {
  border-color: #bfd0e4;
  background: var(--surface-soft);
}

.btn-primary {
  border-color: var(--blue);
  background: var(--blue);
  color: #fff;
}

.btn-primary:hover {
  background: #195dbf;
  border-color: #195dbf;
}

.btn-secondary {
  background: #fff;
  color: #273244;
}

.full-btn {
  width: 100%;
}

.synth-actions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.workspace-stage {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) 52px;
  overflow: hidden;
  position: relative;
}

.workspace-header {
  grid-row: 1;
  min-height: 62px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line-soft);
}

.workspace-title {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 16px;
}

.workspace-title strong {
  color: var(--text-strong);
  font-size: 15px;
}

.workspace-title span {
  color: var(--text-muted);
  font-size: 12px;
}

.workspace-title b {
  color: var(--blue);
  font-family: var(--mono);
  font-weight: 700;
}

.workspace-actions.canvas-controls {
  position: static;
  top: auto;
  left: auto;
  right: auto;
  bottom: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.workspace-actions.canvas-controls .btn {
  background: #fff;
  border-color: var(--line);
  color: #273244;
  backdrop-filter: none;
}

.workspace-actions.canvas-controls .btn-primary {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}

.workspace-actions .btn {
  padding: 0 12px;
  white-space: nowrap;
}

.tool-strip {
  grid-row: auto;
  position: absolute;
  top: 62px;
  left: 0;
  right: 0;
  z-index: 5;
  min-height: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  border-bottom: 1px solid var(--line-soft);
  background: #fbfdff;
  overflow-x: auto;
}

.tool-strip button {
  min-height: 28px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 0 9px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: #475569;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.tool-strip button.active {
  border-color: #c9dbf4;
  background: var(--blue-soft);
  color: var(--blue);
}

.canvas-frame {
  grid-row: 2;
  position: relative;
  inset: auto;
  min-height: 0;
  height: 100%;
  padding: 42px 0 0;
  border: 0;
  border-radius: 0;
  background:
    linear-gradient(rgba(210, 221, 235, 0.45) 1px, transparent 1px),
    linear-gradient(90deg, rgba(210, 221, 235, 0.45) 1px, transparent 1px),
    #f8fafc;
  background-size: 24px 24px;
  overflow: hidden;
}

.workspace-stage .canvas-frame canvas,
.workspace-stage #fb-canvas {
  position: absolute;
  inset: 42px 0 0 0;
  width: 100%;
  display: block;
}

.workspace-footer {
  grid-row: 3;
  position: relative;
  height: 52px;
  min-height: 52px;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 16px;
  border-top: 1px solid var(--line-soft);
  background: #fff;
  color: var(--text-muted);
  font-size: 12px;
}

.workspace-footer span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.workspace-footer span::before {
  content: "";
  width: 14px;
  height: 14px;
  border: 1px solid #94a3b8;
  border-radius: 4px;
}

.workspace-footer button {
  margin-left: auto;
  min-height: 28px;
  padding: 0 10px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: #475569;
  cursor: pointer;
}

.workspace-footer button + button {
  margin-left: 0;
}

.analysis-console {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  width: auto;
  overflow: hidden;
}

.analysis-header {
  min-height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  border-bottom: 1px solid var(--line-soft);
}

.analysis-header h2 {
  margin: 0;
  color: var(--text-strong);
  font-size: 16px;
  font-weight: 700;
}

.analysis-live {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 9px;
  border: 1px solid #b9e6cd;
  border-radius: 999px;
  background: var(--green-soft);
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
}

.analysis-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
  margin: 0;
  padding: 8px 10px;
  border-bottom: 1px solid var(--line-soft);
  background: #fbfdff;
}

.analysis-tab {
  min-height: 30px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: #475569;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

.analysis-tab:hover {
  background: var(--surface-soft);
}

.analysis-tab.active {
  border-color: #c9dbf4;
  background: var(--blue-soft);
  color: var(--blue);
}

.analysis-scroll {
  min-height: 0;
  padding: 10px;
  overflow-y: auto;
}

.analysis-pane {
  display: none;
}

.analysis-pane.active {
  display: grid;
  gap: 10px;
}

.chart-card {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.chart-card__head {
  display: grid;
  gap: 6px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.chart-card__head strong {
  color: var(--text-strong);
  font-size: 13px;
}

.chart-legend {
  display: flex;
  gap: 14px;
  color: var(--text-muted);
  font-size: 12px;
}

.chart-canvas-wrap {
  position: relative;
  height: 292px;
  min-height: 292px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background:
    linear-gradient(rgba(210, 221, 235, 0.45) 1px, transparent 1px),
    linear-gradient(90deg, rgba(210, 221, 235, 0.45) 1px, transparent 1px),
    #f8fafc;
  background-size: 32px 32px;
  overflow: hidden;
}

.analysis-console .chart-canvas-wrap canvas,
.analysis-console #fb-curves {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
}

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

.legend-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
}

.legend-table th,
.legend-table td {
  padding: 8px 6px;
  border: 1px solid var(--line-soft);
  text-align: right;
}

.legend-table th:first-child,
.legend-table td:first-child {
  text-align: left;
}

.legend-table th {
  background: var(--surface-soft);
  color: var(--text-muted);
  font-weight: 700;
}

.legend-table td {
  color: var(--text-main);
  font-family: var(--mono);
}

.note-panel {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
}

.note-panel h4 {
  margin: 0 0 8px;
  color: var(--text-strong);
  font-size: 13px;
}

.note-panel p {
  margin: 0 0 8px;
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.7;
}

.layout:not(.workbench-layout) {
  background: var(--app-bg);
}

@media (max-width: 0px) {
  .workbench-layout {
    grid-template-columns: 308px minmax(480px, 1fr) 328px;
  }

  .workspace-header {
    grid-template-columns: 1fr;
  }

  .workspace-actions.canvas-controls {
    justify-content: flex-start;
    flex-wrap: wrap;
  }
}

@media (max-width: 0px) {
  html,
  body {
    overflow: auto;
  }

  .workbench-layout {
    grid-template-columns: 1fr;
    height: auto;
    min-height: calc(100vh - 101px);
    overflow: visible;
  }

  .control-console,
  .analysis-console {
    overflow: visible;
  }

  .workspace-stage {
    min-height: 680px;
  }

  .tab-nav {
    justify-content: flex-start;
  }
}

@media (max-width: 0px) {
  .topbar {
    grid-template-columns: auto 1fr;
  }

  .header-tools {
    grid-column: 1 / -1;
    justify-self: end;
    margin-top: -8px;
  }

  .workbench-layout {
    padding: 8px;
  }

  .param-group label {
    grid-template-columns: 1fr 62px 32px;
  }

  .param-group input[type="range"] {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .workspace-footer {
    display: none;
  }

  .workspace-stage {
    grid-template-rows: auto auto minmax(480px, 1fr);
  }
}

/* Target-image rebuild overrides */
:root {
  --app-bg: #f5f7fa;
  --surface: #ffffff;
  --surface-soft: #f9fafb;
  --line: #e5e7eb;
  --line-soft: #eef2f7;
  --text-strong: #111827;
  --text-main: #1f2937;
  --text-muted: #6b7280;
  --blue: #2563eb;
  --blue-soft: #eff6ff;
  --orange: #f97316;
  --green: #22c55e;
  --green-soft: #ecfdf5;
  --radius-sm: 8px;
  --radius-md: 8px;
}

.app-header {
  height: 58px;
  border-bottom: 1px solid var(--line);
}

.topbar {
  height: 58px;
  padding: 0 16px;
}

.back-link {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  font-size: 17px;
}

.title-block h1 {
  font-size: 24px;
}

.title-block span {
  height: 28px;
  border-radius: 8px;
  font-size: 14px;
}

.header-tools {
  gap: 14px;
}

.header-tools button {
  width: 28px;
  height: 28px;
  color: #111827;
  font-size: 18px;
}

.tab-nav {
  position: absolute;
  inset: 0 330px 0 330px;
  height: 58px;
  justify-content: center;
  gap: 34px;
  padding: 0;
  border: 0;
  overflow: visible;
  pointer-events: none;
}

.tab-btn {
  min-width: 72px;
  height: 58px;
  pointer-events: auto;
  font-size: 15px;
  color: #111827;
}

.tab-btn.active::after {
  left: 0;
  right: 0;
  height: 3px;
}

.workbench-layout {
  grid-template-columns: 340px minmax(720px, 1fr) 360px;
  gap: 12px;
  height: var(--mobile-workbench-height, calc(100vh - 58px));
  padding: 12px;
}

.control-console,
.workspace-stage,
.analysis-console {
  border-radius: 8px;
  border-color: #dfe5ee;
  background: #fff;
}

.control-console {
  padding: 10px 0 0;
}

.panel-title {
  display: none;
}

.param-group,
.analysis-section {
  margin: 0 10px 10px;
  border-radius: 8px;
  border-color: #e5e7eb;
}

.param-group:first-of-type {
  margin-top: 0;
}

.param-group h3,
.analysis-section h3 {
  min-height: 44px;
  padding: 0 14px;
  color: #111827;
  font-size: 15px;
  font-weight: 700;
}

.param-group h3::before,
.analysis-section h3::before {
  content: "✥";
  margin-right: 10px;
  color: #374151;
  font-size: 14px;
}

.param-group h3::after,
.analysis-section h3::after {
  content: "⌃";
  margin-left: auto;
}

.param-group .group-body,
.analysis-section .group-body {
  padding: 12px 14px;
}

.param-grid {
  gap: 10px;
}

.param-group label {
  grid-template-columns: 64px 20px minmax(68px, 1fr) 56px 26px;
  min-height: 26px;
  gap: 6px;
  color: #111827;
  font-size: 13px;
}

.param-name {
  color: #111827;
  font-size: 13px;
}

.param-group label > i {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  color: #111827;
  font-family: var(--mono);
  font-size: 13px;
  font-style: italic;
}

.param-group input[type="range"] {
  height: 3px;
  accent-color: var(--blue);
}

.param-group label > span[id$="-val"],
.param-group label > span:not(.param-name):not(.status-value),
.param-value-input {
  height: 30px;
  justify-content: center;
  border-color: #e5e7eb;
  background: #fff;
  font-size: 12px;
}

.param-value-input {
  width: 100%;
  min-width: 0;
  display: inline-flex;
  padding: 0 6px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  color: #111827;
  font-family: var(--mono);
  font-weight: 700;
  text-align: center;
  outline: none;
}

.param-value-input:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.14);
}

.param-value-input::-webkit-outer-spin-button,
.param-value-input::-webkit-inner-spin-button {
  margin: 0;
}

.param-group em {
  color: #4b5563;
  font-size: 11px;
  white-space: nowrap;
}

.check-label,
.toggle-row {
  min-height: 34px;
  border-color: transparent;
  background: transparent;
  padding: 0;
}

.toggle-row {
  grid-template-columns: 1fr 38px !important;
}

.toggle-row input[type="checkbox"] {
  width: 36px;
  height: 20px;
}

.nested-control {
  padding: 10px;
  border-color: #edf1f6;
  background: #fbfdff;
}

.derived-grid {
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.derived-grid div {
  min-height: 56px;
  background: #f9fafb;
}

.metric-stack .info-row {
  min-height: 28px;
  font-size: 13px;
}

#fb-deadpoint {
  min-height: 24px;
  background: #dcfce7;
  color: #16a34a !important;
}

.workspace-stage {
  grid-template-rows: 80px minmax(0, 1fr) 56px;
}

.workspace-header {
  min-height: 80px;
  padding: 14px 16px 14px;
  border-bottom-color: #e5e7eb;
}

.workspace-title strong {
  width: 100%;
  font-size: 18px;
}

.workspace-title {
  gap: 8px 24px;
}

.workspace-title span {
  font-size: 13px;
}

.workspace-title b {
  color: var(--blue);
}

.workspace-actions .btn {
  min-height: 40px;
  padding: 0 14px;
  border-radius: 8px;
  font-size: 13px;
}

.tool-strip {
  top: 80px;
  height: 54px;
  min-height: 54px;
  padding: 10px 16px;
  gap: 10px;
  border-top: 1px solid #f3f4f6;
  border-bottom-color: #e5e7eb;
  background: #fff;
}

.tool-strip button {
  min-height: 30px;
  padding: 0 9px;
  border-radius: 6px;
  color: #374151;
  font-size: 13px;
}

.tool-strip button.active {
  border-color: #dbeafe;
  background: #eff6ff;
  color: var(--blue);
}

.canvas-frame {
  padding-top: 54px;
  background: #fff;
}

.workspace-stage #fb-canvas {
  inset: 54px 0 0 0;
}

.workspace-footer {
  height: 56px;
  min-height: 56px;
  padding: 0 18px;
  gap: 34px;
  font-size: 13px;
}

.workspace-footer span::before {
  width: 20px;
  height: 20px;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: #64748b;
  font-size: 18px;
  line-height: 1;
  text-align: center;
  margin-right: 8px;
}

.workspace-footer span:nth-of-type(1)::before {
  content: "⌕";
}

.workspace-footer span:nth-of-type(2)::before {
  content: "✥";
}

.workspace-footer span:nth-of-type(3)::before {
  content: "↔";
}

.workspace-footer button {
  font-size: 13px;
}

.analysis-console {
  padding: 0;
}

.analysis-header {
  min-height: 64px;
  padding: 0 22px;
}

.analysis-header h2 {
  font-size: 20px;
}

.analysis-live {
  min-height: 28px;
  padding: 0 10px;
  background: #dcfce7;
  color: #059669;
}

.analysis-tabs {
  margin: 0 16px;
  padding: 10px 0;
  gap: 0;
  border-bottom: 1px solid #e5e7eb;
  background: #fff;
}

.analysis-tab {
  position: relative;
  min-height: 34px;
  border-radius: 0;
  color: #111827;
  background: #fff;
  border: 0;
  font-size: 14px;
}

.analysis-tab.active {
  background: #fff;
  color: var(--blue);
  border: 0;
}

.analysis-tab.active::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: -11px;
  height: 2px;
  background: var(--blue);
}

.analysis-scroll {
  padding: 16px;
}

.chart-card {
  gap: 12px;
}

.chart-card__head strong {
  font-size: 15px;
}

.chart-legend {
  justify-content: center;
  gap: 36px;
}

.chart-canvas-wrap {
  height: 320px;
  min-height: 320px;
  border-color: #e5e7eb;
  background: #fff;
}

.analysis-section {
  margin: 0 0 10px;
}

.summary-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.summary-grid div {
  min-height: 58px;
  padding: 8px;
  background: #fff;
  border-color: #edf1f6;
}

.summary-grid strong {
  font-size: 15px;
}

.legend-table th,
.legend-table td {
  padding: 8px 7px;
  border-color: #edf1f6;
}

.analysis-section h3 {
  min-height: 38px;
  color: #111827;
  font-size: 14px;
  background: #fff;
}

.analysis-section h3::before {
  content: "⚙";
  color: #6b7280;
}

.analysis-section .group-body {
  background: #fff;
}

.setting-list {
  display: grid;
  gap: 8px;
}

.setting-list .check-label {
  grid-template-columns: 1fr 38px !important;
  padding: 0 2px;
}

.legend-table {
  background: #fff;
}

.legend-table th {
  background: #f8fafc;
}

.analysis-section > .summary-grid {
  display: grid !important;
  padding: 10px;
}

.analysis-section > .legend-table {
  display: table !important;
  margin: 10px;
  width: calc(100% - 20px);
}

.analysis-section:not(.is-collapsible) > .summary-grid,
.analysis-section:not(.is-collapsible) > .legend-table {
  visibility: visible;
  opacity: 1;
}

.analysis-section:not(.is-collapsible) > .group-body {
  max-height: none;
}

.analysis-section:not(.is-collapsible) {
  overflow: visible;
}

.analysis-section:not(.is-collapsible) .summary-grid {
  display: grid !important;
  min-height: 58px;
  visibility: visible !important;
  opacity: 1 !important;
  overflow: visible;
}

.analysis-section:not(.is-collapsible) .legend-table {
  display: table !important;
  visibility: visible !important;
  opacity: 1 !important;
}

.analysis-section:not(.is-collapsible).collapsed h3 {
  border-bottom: 1px solid #e5e7eb;
}

.analysis-section:not(.is-collapsible).collapsed .group-body {
  max-height: none !important;
  padding: 12px 14px !important;
}

.analysis-section.collapsed .group-body {
  max-height: 0 !important;
  padding-top: 0 !important;
  padding-bottom: 0 !important;
}

.analysis-section.collapsed h3 {
  border-bottom: 0 !important;
}

.analysis-pane.active {
  align-items: start;
  grid-auto-rows: max-content;
}

.analysis-pane.active .analysis-section.collapsed,
.module-analysis .analysis-section.collapsed {
  min-height: 38px !important;
  height: 38px !important;
  max-height: 38px !important;
  align-self: start;
  overflow: hidden !important;
}

.analysis-pane.active .analysis-section.collapsed .group-body,
.module-analysis .analysis-section.collapsed .group-body {
  display: none !important;
  max-height: 0 !important;
  padding: 0 !important;
  border: 0 !important;
}

.display-options-popover {
  position: absolute;
  right: 54px;
  bottom: 42px;
  z-index: 12;
  width: 150px;
  display: grid;
  gap: 8px;
  padding: 10px;
  border: 1px solid #dbe3ee;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.12);
}

.display-options-popover[hidden] {
  display: none;
}

.display-options-popover label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #111827;
  font-size: 12px;
  white-space: nowrap;
}

/* Shared product workbench skin for the remaining mechanism modules */
.tab-panel:not(#panel-fourbar) .layout {
  display: grid;
  grid-template-columns: 340px minmax(720px, 1fr) 360px;
  gap: 12px;
  width: 100%;
  height: calc(100vh - 58px);
  padding: 12px;
  overflow: hidden;
  background: #f5f7fa;
}

.tab-panel:not(#panel-fourbar) .sidebar {
  width: auto;
  min-width: 0;
  max-width: none;
  max-height: none;
  padding: 10px 0 0;
  overflow-y: auto;
  border: 1px solid #dfe5ee;
  border-radius: 8px;
  background: #fff;
  box-shadow: none;
}

.tab-panel:not(#panel-fourbar) .canvas-area,
.tab-panel:not(#panel-fourbar) .curves-area {
  min-width: 0;
  min-height: 0;
  width: auto;
  height: auto;
  border: 1px solid #dfe5ee;
  border-radius: 8px;
  background: #fff;
  box-shadow: none;
  overflow: hidden;
}

.tab-panel:not(#panel-fourbar) .canvas-area {
  position: relative;
}

.tab-panel:not(#panel-fourbar) .canvas-area::before {
  content: "机构仿真";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  z-index: 3;
  height: 64px;
  display: flex;
  align-items: center;
  padding: 0 18px;
  border-bottom: 1px solid #e5e7eb;
  background: rgba(255, 255, 255, 0.96);
  color: #111827;
  font-size: 18px;
  font-weight: 700;
}

#panel-gear .canvas-area::before { content: "齿轮啮合仿真"; }
#panel-gear-train .canvas-area::before { content: "轮系运动仿真"; }
#panel-cam .canvas-area::before { content: "凸轮机构仿真"; }
#panel-crank-slider .canvas-area::before { content: "曲柄滑块仿真"; }
#panel-dof .canvas-area::before { content: "自由度计算画布"; }

.tab-panel:not(#panel-fourbar) .canvas-area canvas {
  position: absolute;
  inset: 0;
  display: block;
}

.tab-panel:not(#panel-fourbar) .canvas-controls,
.tab-panel:not(#panel-fourbar) .canvas-exports {
  top: 12px;
  z-index: 4;
  gap: 8px;
}

.tab-panel:not(#panel-fourbar) .canvas-controls {
  left: auto;
  right: 18px;
}

.tab-panel:not(#panel-fourbar) .canvas-exports {
  right: 18px;
  top: 56px;
}

.tab-panel:not(#panel-fourbar) .canvas-controls .btn,
.tab-panel:not(#panel-fourbar) .canvas-exports .btn {
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  background: #fff;
  color: #273244;
  font-size: 13px;
  font-weight: 700;
  backdrop-filter: none;
}

.tab-panel:not(#panel-fourbar) .canvas-controls .btn-primary {
  border-color: #2563eb;
  background: #2563eb;
  color: #fff;
}

.tab-panel:not(#panel-fourbar) .curves-area {
  position: relative;
  padding: 64px 12px 12px;
}

.tab-panel:not(#panel-fourbar) .curves-area::before {
  content: "结果分析";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  z-index: 2;
  height: 64px;
  display: flex;
  align-items: center;
  padding: 0 20px;
  border-bottom: 1px solid #e5e7eb;
  background: #fff;
  color: #111827;
  font-size: 20px;
  font-weight: 800;
}

.tab-panel:not(#panel-fourbar) .curves-area canvas {
  position: relative;
  top: auto;
  left: auto;
  width: 100%;
  height: 100%;
  display: block;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  background: #fff;
}

#panel-dof .layout {
  grid-template-columns: 340px minmax(720px, 1fr);
}

#panel-dof .canvas-area {
  grid-column: 2;
}

#panel-dof .canvas-controls {
  right: 18px;
}

@media (max-width: 0px) {
  .tab-panel:not(#panel-fourbar) .layout {
    grid-template-columns: 308px minmax(480px, 1fr) 328px;
  }

  #panel-dof .layout {
    grid-template-columns: 308px minmax(480px, 1fr);
  }
}

@media (max-width: 0px) {
  .tab-panel:not(#panel-fourbar) .layout,
  #panel-dof .layout {
    grid-template-columns: 1fr;
    height: auto;
    min-height: calc(100vh - 58px);
    overflow: visible;
  }
}

.nested-control .param-group label,
.nested-control label {
  grid-template-columns: 82px 22px minmax(46px, 1fr) 54px 22px;
  gap: 5px;
}

.nested-control .param-name {
  overflow: visible;
  text-overflow: clip;
  white-space: nowrap;
  font-size: 12px;
}

.synth-block .param-grid label {
  grid-template-columns: 96px minmax(54px, 1fr) 54px 18px;
  gap: 6px;
}

.synth-block .param-name {
  overflow: visible;
  text-overflow: clip;
  white-space: normal;
  line-height: 1.2;
  font-size: 12px;
}

.synth-block .param-grid label > i {
  display: none;
}

.tab-panel:not(#panel-fourbar) .param-group label:not(.check-label):not(.toggle-row):not(:has(.param-name)) {
  grid-template-columns: minmax(58px, 76px) minmax(116px, 1fr) 68px;
  gap: 8px;
}

.tab-panel:not(#panel-fourbar) .param-group label:not(.check-label):not(.toggle-row):not(:has(.param-name)) input[type="range"] {
  min-width: 0;
}

.tab-panel:not(#panel-fourbar) .param-group label:not(.check-label):not(.toggle-row):not(:has(.param-name)) > span[id$="-val"],
.tab-panel:not(#panel-fourbar) .param-group label:not(.check-label):not(.toggle-row):not(:has(.param-name)) > .param-value-input {
  width: 68px;
  justify-content: center;
}

.synth-block .param-grid label {
  grid-template-columns: minmax(76px, 86px) minmax(108px, 1fr) 58px 16px;
}

.workspace-stage {
  grid-template-rows: 92px minmax(0, 1fr) 56px;
}

.workspace-header {
  position: relative !important;
  left: auto !important;
  right: auto !important;
  top: auto !important;
  min-height: 92px;
  padding: 14px 16px;
  overflow: visible;
  align-items: center;
}

.workspace-title {
  min-width: 0;
  align-content: center;
}

.workspace-title strong {
  line-height: 1.2;
}

.workspace-title span {
  line-height: 1.35;
}

.tool-strip {
  top: 92px;
}

/* Final module-specific labels for synced workbench panels */
#panel-gear.tab-panel .canvas-area::before {
  content: "齿轮啮合仿真" !important;
}

#panel-gear-train.tab-panel .canvas-area::before {
  content: "轮系运动仿真" !important;
}

#panel-cam.tab-panel .canvas-area::before {
  content: "凸轮机构仿真" !important;
}

#panel-crank-slider.tab-panel .canvas-area::before {
  content: "曲柄滑块仿真" !important;
}

#panel-dof.tab-panel .canvas-area::before {
  content: "自由度计算画布" !important;
}

#panel-gear.tab-panel .curves-area::before {
  content: "啮合分析" !important;
}

#panel-gear-train.tab-panel .curves-area::before {
  content: "轮系分析" !important;
}

#panel-cam.tab-panel .curves-area::before,
#panel-crank-slider.tab-panel .curves-area::before {
  content: "运动分析" !important;
}

/* Full workbench replication for synced mechanism modules */
.synced-workbench .layout {
  grid-template-columns: 340px minmax(720px, 1fr) 360px !important;
}

.synced-workbench .module-workspace {
  display: grid;
  grid-template-rows: 92px minmax(0, 1fr) 56px;
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  border: 1px solid #dfe5ee;
  border-radius: 8px;
  background: #fff;
  box-shadow: none;
}

.synced-workbench .module-workspace .workspace-header {
  min-height: 92px;
  padding: 14px 16px;
  border-bottom: 1px solid #e5e7eb;
  background: #fff;
}

.synced-workbench .module-workspace .workspace-title {
  gap: 8px 24px;
  min-width: 0;
  align-content: center;
}

.synced-workbench .module-workspace .workspace-title strong {
  width: 100%;
  color: #111827;
  font-size: 18px;
  line-height: 1.2;
}

.synced-workbench .module-workspace .workspace-title span {
  color: #6b7280;
  font-size: 13px;
  line-height: 1.35;
}

.synced-workbench .module-workspace .workspace-title b {
  color: #2563eb;
  font-weight: 700;
}

.synced-workbench .module-workspace .workspace-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
  gap: 8px;
}

.synced-workbench .module-workspace .workspace-actions .btn {
  min-height: 40px;
  padding: 0 14px;
  border-radius: 8px;
  font-size: 13px;
}

.synced-workbench .module-workspace .tool-strip {
  position: absolute;
  left: 0;
  right: 0;
  top: 92px;
  z-index: 5;
  height: 54px;
  min-height: 54px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-top: 1px solid #f3f4f6;
  border-bottom: 1px solid #e5e7eb;
  background: #fff;
}

.synced-workbench .module-workspace .tool-strip button {
  min-height: 30px;
  padding: 0 9px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: #374151;
  font-size: 13px;
  font-weight: 700;
}

.synced-workbench .module-workspace .tool-strip button.active {
  border-color: #dbeafe;
  background: #eff6ff;
  color: #2563eb;
}

.synced-workbench .module-workspace .canvas-frame {
  position: relative;
  min-width: 0;
  min-height: 0;
  padding-top: 54px;
  background: #fff;
}

.synced-workbench .module-workspace .canvas-frame canvas {
  position: absolute !important;
  inset: 54px 0 0 0 !important;
  width: 100% !important;
  height: calc(100% - 54px) !important;
  display: block;
}

.synced-workbench .module-workspace .workspace-footer {
  height: 56px;
  min-height: 56px;
  display: flex;
  align-items: center;
  gap: 34px;
  padding: 0 18px;
  border-top: 1px solid #e5e7eb;
  background: #fff;
  color: #6b7280;
  font-size: 13px;
}

.synced-workbench .module-workspace .workspace-footer span::before {
  display: inline-block;
  width: 20px;
  height: 20px;
  margin-right: 8px;
  vertical-align: -4px;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: #64748b;
  font-size: 18px;
  line-height: 1;
  text-align: center;
}

.synced-workbench .module-workspace .workspace-footer span:nth-of-type(1)::before {
  content: "⌕";
}

.synced-workbench .module-workspace .workspace-footer span:nth-of-type(2)::before {
  content: "✥";
}

.synced-workbench .module-workspace .workspace-footer span:nth-of-type(3)::before {
  content: "↔";
}

.synced-workbench .module-workspace .workspace-footer button {
  margin-left: auto;
  border: 0;
  background: transparent;
  color: #374151;
  font-size: 13px;
}

.synced-workbench .module-workspace .workspace-footer button + button {
  margin-left: 0;
}

.synced-workbench .module-analysis {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  border: 1px solid #dfe5ee;
  border-radius: 8px;
  background: #fff;
}

.synced-workbench .module-analysis .chart-canvas-wrap {
  height: 320px;
  min-height: 320px;
}

.synced-workbench .module-analysis .chart-canvas-wrap canvas {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
  border: 0;
}

.module-data-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.module-data-grid div {
  min-height: 58px;
  padding: 8px;
  border: 1px solid #edf1f6;
  border-radius: 6px;
  background: #fff;
}

.module-data-grid span {
  display: block;
  margin-bottom: 5px;
  color: #6b7280;
  font-size: 12px;
}

.module-data-grid strong {
  color: #111827;
  font-family: var(--mono);
  font-size: 14px;
}

.module-empty-chart {
  height: 100%;
  display: grid;
  place-items: center;
  color: #6b7280;
  font-size: 13px;
  background:
    linear-gradient(#eef2f7 1px, transparent 1px),
    linear-gradient(90deg, #eef2f7 1px, transparent 1px);
  background-size: 28px 28px;
}

.module-muted {
  margin: 0;
  color: #6b7280;
  font-size: 13px;
  line-height: 1.6;
}

#panel-dof .sidebar .param-group .dof-formula {
  margin: 2px 12px 12px;
  padding: 14px 18px;
  border-radius: 8px;
  background: #f8fafc;
  color: #1d4ed8;
  font-size: 17px;
  line-height: 1.4;
}

#panel-dof .sidebar .param-group .info-row {
  margin: 0 12px;
  padding: 9px 2px;
  grid-template-columns: minmax(0, 1fr) auto;
}

#panel-dof .sidebar .param-group .info-row > span:first-child {
  padding-left: 2px;
}

#panel-dof .sidebar .param-group .info-row > span:last-child {
  padding-right: 2px;
}

#panel-dof .sidebar .param-group .dof-result,
#panel-dof .sidebar .param-group .dof-detail {
  margin-left: 12px;
  margin-right: 12px;
}

@media (max-width: 0px) {
  .synced-workbench .layout {
    grid-template-columns: 308px minmax(480px, 1fr) 328px !important;
  }
}

@media (max-width: 0px) {
  .synced-workbench .layout {
    grid-template-columns: 1fr !important;
    height: auto;
    overflow: visible;
  }
}

@media (max-width: 900px) {
  html,
  body {
    width: 100%;
    min-width: 0;
    height: auto;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
  }

  body {
    min-height: 100vh;
  }

  .app-header,
  .app-main {
    width: 1440px;
    max-width: none;
    transform-origin: top left;
    zoom: var(--mech-mobile-scale, 1);
  }

  .app-main,
  .tab-panel,
  .tab-panel.active {
    overflow: visible;
  }

  .workbench-layout,
  .tab-panel:not(#panel-fourbar) .layout {
    width: 1440px;
    max-width: none;
  }
}