/* src/styles/main.css */
:root {
  --bg-main: #F7F7F4;
  --bg-surface: #FFFFFF;
  --bg-subtle: #EFEFE9;
  --bg-workspace: #202522;
  --text-primary: #202320;
  --text-secondary: #585E59;
  --text-muted: #7A807B;
  --text-inverse: #F7F7F4;
  --accent-primary: #D95B32;
  --accent-primary-hover: #B84722;
  --accent-secondary: #343A38;
  --accent-subtle: #FBEFEA;
  --border-color: #D9DDD7;
  --border-strong: #343A38;
  --status-verified-bg: #E6ECE8;
  --status-verified-text: #173824;
  --status-discrepancy-bg: #FBEFEA;
  --status-discrepancy-text: #7A2B12;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  --container-max: 1320px;
  --grid-gap: 1.5rem;
  --radius-sm: 2px;
  --radius-md: 4px;
}

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

html {
  font-size: 16px;
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  width: 100%;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

/* Accessibility: Skip Link */
.skip-to-content {
  position: absolute;
  top: -9999px;
  left: 1rem;
  background: var(--accent-primary);
  color: #FFFFFF;
  padding: 0.65rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  z-index: 10000;
  text-decoration: none;
  border-radius: var(--radius-sm);
  outline: none;
}

.skip-to-content:focus {
  top: 1rem;
  outline: 3px solid #000000;
  outline-offset: 2px;
}

/* Visually Hidden Utility for Screen Readers */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Tabular numerals for engineering specifications, tables, coordinates */
.tabular,
table td,
.spec-value,
.coord-readout,
input[type="number"] {
  font-variant-numeric: tabular-nums;
  font-family: var(--font-mono);
}

/* Typography Hierarchy */
h1, h2, h3, h4 {
  color: var(--text-primary);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

h1 { font-size: clamp(1.75rem, 4vw, 2.65rem); }
h2 { font-size: clamp(1.3rem, 3vw, 1.85rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.25rem); }
h4 { font-size: 1rem; }

p {
  color: var(--text-primary);
  max-width: 72ch;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

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

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-primary);
  font-weight: 600;
  display: block;
  margin-bottom: 0.45rem;
  word-wrap: break-word;
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.25rem;
  min-width: 0;
}

.section-block {
  padding: 3rem 0;
  border-bottom: 1px solid var(--border-color);
  min-width: 0;
}

/* Breadcrumbs */
.breadcrumb-nav {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  margin-bottom: 1rem;
  color: var(--text-secondary);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  line-height: 1.4;
}

.breadcrumb-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s ease;
}

.breadcrumb-nav a:hover {
  color: var(--accent-primary);
  text-decoration: underline;
}

.breadcrumb-separator {
  color: var(--border-strong);
  user-select: none;
}

.breadcrumb-current {
  color: var(--text-primary);
  font-weight: 600;
}

/* Header & Accessible Navigation */
.site-header {
  background-color: var(--bg-main);
  border-bottom: 1px solid var(--border-strong);
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.25rem;
  gap: 1rem;
  min-width: 0;
}

.header-brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.brand-logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.03em;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
  min-height: 44px;
}

.mobile-nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.75rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 44px;
  min-width: 44px;
}

.hamburger-box {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 18px;
  height: 13px;
}

.hamburger-bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.mobile-nav-toggle.is-active .hamburger-bar:nth-child(1) {
  transform: translateY(5.5px) rotate(45deg);
}

.mobile-nav-toggle.is-active .hamburger-bar:nth-child(2) {
  opacity: 0;
}

.mobile-nav-toggle.is-active .hamburger-bar:nth-child(3) {
  transform: translateY(-5.5px) rotate(-45deg);
}

.primary-nav ul {
  display: flex;
  list-style: none;
  gap: 1.25rem;
  align-items: center;
}

.primary-nav a {
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.925rem;
  font-weight: 500;
  padding: 0.4rem 0;
  border-bottom: 2px solid transparent;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
  border-bottom-color: var(--accent-primary);
  color: var(--accent-primary);
}

.header-search {
  display: flex;
  align-items: center;
  border: 1px solid var(--border-strong);
  background: var(--bg-surface);
  min-width: 0;
}

.header-search input {
  border: none;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  background: transparent;
  color: var(--text-primary);
  min-width: 0;
  width: 170px;
  outline: none;
}

.header-search button {
  background: var(--accent-secondary);
  color: var(--text-inverse);
  border: none;
  padding: 0.5rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 40px;
  transition: background-color 0.15s ease;
}

.header-search button:hover {
  background-color: var(--accent-primary);
}

/* Buttons & Controls */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  min-height: 44px;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  white-space: normal;
  text-align: center;
}

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

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

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  background-color: var(--accent-secondary);
  color: var(--text-inverse);
}

/* Accessible Focus States */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* Editorial Hero Grid */
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: center;
  padding: 2.75rem 0;
  border-bottom: 1px solid var(--border-color);
  min-width: 0;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.hero-technical-frame {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  padding: 1.25rem;
  min-width: 0;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.hero-technical-meta {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-color);
  padding-top: 0.65rem;
  margin-top: 0.65rem;
}

.hero-tech-svg {
  width: 100%;
  max-width: 520px;
  height: auto;
  display: block;
}

/* Category Matrix */
.category-matrix {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(240px, 100%), 1fr));
  border-top: 1px solid var(--border-color);
  border-left: 1px solid var(--border-color);
  width: 100%;
  min-width: 0;
}

.category-cell {
  background: var(--bg-surface);
  border-right: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 1.25rem;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-width: 0;
  transition: background-color 0.15s ease;
}

.category-cell:hover {
  background: var(--bg-subtle);
}

/* Robot Technical Profile Cards */
.robot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr));
  gap: 1.5rem;
  width: 100%;
  min-width: 0;
}

.robot-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  min-width: 0;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.robot-card:hover {
  border-color: var(--border-strong);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.robot-card-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
  min-width: 0;
}

.verification-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  background: var(--status-verified-bg);
  color: var(--status-verified-text);
  border: 1px solid currentColor;
  white-space: normal;
  display: inline-block;
  text-align: center;
}

.verification-badge.discrepancy {
  background: var(--status-discrepancy-bg);
  color: var(--status-discrepancy-text);
}

.robot-card-body {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  min-width: 0;
}

.spec-mini-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.825rem;
  min-width: 0;
}

.spec-mini-table th,
.spec-mini-table td {
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
  vertical-align: top;
}

.spec-mini-table th {
  color: var(--text-secondary);
  font-weight: 500;
  width: 42%;
}

.spec-mini-table td {
  width: 58%;
  word-break: break-word;
}

/* Comparison Table & Local Scroll Wrapper */
.comparison-scroll-wrapper {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--border-strong);
  background: var(--bg-surface);
  position: relative;
  min-width: 0;
}

.comparison-scroll-wrapper:focus-visible {
  outline: 2px solid var(--accent-primary);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

.comparison-table th,
.comparison-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  text-align: left;
  vertical-align: top;
  font-size: 0.875rem;
}

.comparison-table th:first-child,
.comparison-table td:first-child {
  position: sticky;
  left: 0;
  background: var(--bg-subtle);
  font-weight: 600;
  width: 180px;
  min-width: 140px;
  z-index: 2;
  border-right: 2px solid var(--border-strong);
}

/* Dark Interactive Workspace (/lab/robot-arm-simulator/) */
.lab-workspace {
  background-color: var(--bg-workspace);
  color: var(--text-inverse);
  border: 1px solid var(--border-strong);
  display: grid;
  grid-template-columns: 1fr 380px;
  min-width: 0;
  width: 100%;
}

.lab-canvas-stage {
  position: relative;
  min-height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid #3A423E;
  padding: 1rem;
  min-width: 0;
  width: 100%;
  overflow: hidden;
}

#kinematics-canvas {
  width: 100%;
  max-width: 620px;
  height: auto;
  aspect-ratio: 620 / 480;
  display: block;
  background: #141715;
  border-radius: 2px;
}

.lab-controls-panel {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  background: #1A1E1B;
  min-width: 0;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-width: 0;
}

.control-group label {
  display: flex;
  justify-content: space-between;
  font-size: 0.825rem;
  font-family: var(--font-mono);
  gap: 0.5rem;
}

.control-group input[type="range"] {
  width: 100%;
  accent-color: var(--accent-primary);
  height: 24px;
  cursor: pointer;
}

.control-group input[type="text"],
.control-group input[type="email"],
.control-group input[type="url"],
.control-group input[type="search"],
.control-group select,
.control-group textarea {
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

/* Standalone Robot Profile Page Styles */
.robot-profile-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-top: 0.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.robot-profile-specs-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

.robot-profile-specs-table th,
.robot-profile-specs-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
  vertical-align: top;
  font-size: 0.9rem;
}

.robot-profile-specs-table th {
  width: 30%;
  min-width: 140px;
  background: var(--bg-subtle);
  color: var(--text-primary);
  font-weight: 600;
}

/* Footer */
.site-footer {
  border-bottom: none;
  font-size: 0.875rem;
  margin-top: auto;
  padding: 2.5rem 0;
  width: 100%;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
  min-width: 0;
}

.footer-meta {
  flex: 1;
  min-width: min(280px, 100%);
  max-width: 520px;
}

.footer-nav {
  flex: 2;
  min-width: min(280px, 100%);
}

.footer-nav ul {
  list-style: none;
  display: flex;
  gap: 1rem 1.5rem;
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s ease;
  display: inline-block;
  padding: 0.2rem 0;
  min-height: 32px;
  display: inline-flex;
  align-items: center;
}

.footer-nav a:hover {
  color: var(--accent-primary);
  text-decoration: underline;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

/* Narrow Tablet & Below */
@media (max-width: 940px) {
  .hero-grid,
  .lab-workspace {
    grid-template-columns: 1fr;
  }

  .lab-canvas-stage {
    border-right: none;
    border-bottom: 1px solid #3A423E;
    min-height: 300px;
    padding: 0.75rem;
  }
}

/* Mobile Screens (880px and below) */
@media (max-width: 880px) {
  .header-inner {
    flex-direction: column;
    align-items: stretch;
    padding-top: 0.65rem;
    padding-bottom: 0.65rem;
    min-height: auto;
    gap: 0.75rem;
  }

  .header-brand-row {
    width: 100%;
  }

  .mobile-nav-toggle {
    display: inline-flex;
  }

  .primary-nav {
    display: none;
    width: 100%;
    border-top: 1px solid var(--border-color);
    padding-top: 0.75rem;
  }

  .primary-nav.nav-open {
    display: block;
  }

  .primary-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
    width: 100%;
  }

  .primary-nav a {
    display: flex;
    width: 100%;
    padding: 0.75rem 0.65rem;
    font-size: 1rem;
    border-bottom: none;
    border-left: 3px solid transparent;
    background: var(--bg-surface);
  }

  .primary-nav a:hover,
  .primary-nav a[aria-current="page"] {
    border-left-color: var(--accent-primary);
    background: var(--bg-subtle);
  }

  .header-search {
    width: 100%;
  }

  .header-search input {
    width: 100%;
    flex: 1;
    font-size: 16px; /* Prevents auto-zoom on mobile Safari */
  }

  .header-search button {
    flex-shrink: 0;
    min-width: 60px;
    min-height: 44px;
  }

  .section-block {
    padding: 2.25rem 0;
  }

  .hero-grid {
    padding: 1.75rem 0;
    gap: 1.5rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }
}

/* Extra Compact Mobile (under 420px: 320px, 360px, 390px) */
@media (max-width: 420px) {
  .container {
    padding: 0 0.85rem;
  }

  .brand-logo {
    font-size: 0.95rem;
  }

  .mobile-nav-toggle {
    padding: 0.35rem 0.55rem;
    font-size: 0.75rem;
  }

  .comparison-table {
    min-width: 520px;
  }

  .comparison-table th:first-child,
  .comparison-table td:first-child {
    width: 120px;
    min-width: 110px;
    font-size: 0.78rem;
    padding: 0.65rem 0.5rem;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 0.65rem 0.75rem;
    font-size: 0.8rem;
  }

  .lab-controls-panel {
    padding: 1rem;
  }

  .spec-mini-table th {
    width: 48%;
  }

  .spec-mini-table td {
    width: 52%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
}

/* Homepage redesign layer; appended to preserve remote feature styles. */
/* src/styles/main.css */
:root {
  --bg-main: #F7F7F4;
  --bg-surface: #FFFFFF;
  --bg-subtle: #EFEFE9;
  --bg-workspace: #202522;
  --text-primary: #202320;
  --text-secondary: #656B66;
  --text-inverse: #F7F7F4;
  --accent-primary: #D95B32;
  --accent-primary-hover: #B84722;
  --accent-secondary: #343A38;
  --border-color: #D9DDD7;
  --border-strong: #343A38;
  --status-verified-bg: #E6ECE8;
  --status-verified-text: #1E3A2B;
  --status-discrepancy-bg: #F9EBE4;
  --status-discrepancy-text: #7A2B12;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --container-max: 1320px;
  --grid-gap: 1.5rem;
  --radius-sm: 2px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  margin: 0;
}

main {
  width: 100%;
  min-width: 0;
  flex: 1 0 auto;
}

img,
svg,
canvas,
video {
  display: block;
  max-width: 100%;
}

p,
li,
th,
td,
small,
code,
pre {
  overflow-wrap: anywhere;
}

p {
  max-width: 68ch;
}

h1,
h2,
h3,
h4 {
  color: var(--text-primary);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.18;
  text-wrap: balance;
  overflow-wrap: anywhere;
}

h1 { font-size: clamp(1.85rem, 4.2vw, 2.8rem); }
h2 { font-size: clamp(1.4rem, 2.5vw, 2rem); }
h3 { font-size: 1.12rem; }

ul,
ol {
  padding-left: 1.25rem;
}

:where(a, button, input, select, textarea) {
  font: inherit;
}

:where(input, select, textarea, button) {
  max-width: 100%;
}

:where(button, input, select, textarea) {
  color: inherit;
}

:where(a, button, input, select, textarea, summary):focus-visible {
  outline: 3px solid var(--accent-primary);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  z-index: 1000;
  top: 0.75rem;
  left: 0.75rem;
  transform: translateY(-180%);
  padding: 0.7rem 1rem;
  background: var(--accent-primary);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}

.skip-link:focus {
  transform: translateY(0);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-secondary { color: var(--text-secondary); }
.tabular,
table td,
.spec-value,
.coord-readout,
input[type="number"] {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.eyebrow {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--accent-primary);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  line-height: 1.4;
  text-transform: uppercase;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(1rem, 3.2vw, 2rem);
}

.section-block {
  padding-block: clamp(2.5rem, 5.4vw, 4.25rem);
  border-bottom: 1px solid var(--border-color);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem 2rem;
  margin-bottom: 1rem;
}

.section-heading > * {
  min-width: 0;
}

.section-heading h2 {
  margin: 0;
}

.section-intro {
  max-width: 68ch;
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

.section-link {
  flex: 0 0 auto;
}

/* Shared header and responsive navigation */
.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  background: var(--bg-main);
  border-bottom: 1px solid var(--border-color);
}

.header-inner {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr) minmax(210px, 285px);
  align-items: center;
  gap: 1.25rem;
  min-height: 4.75rem;
  padding-block: 0.55rem;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  min-width: 0;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  text-decoration: none;
  white-space: nowrap;
}

.brand-logo-image {
  display: block;
  flex: 0 1 auto;
  width: clamp(11rem, 21vw, 15rem);
  max-width: 100%;
  height: auto;
  object-fit: contain;
}

.nav-disclosure {
  position: relative;
  min-width: 0;
}

.nav-disclosure > summary {
  display: none;
}

.nav-toggle {
  list-style: none;
  cursor: pointer;
}

.nav-toggle::-webkit-details-marker {
  display: none;
}

.primary-nav {
  min-width: 0;
}

.primary-nav ul {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(0.55rem, 1.25vw, 1.15rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.primary-nav li {
  min-width: 0;
}

.primary-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0.3rem 0.05rem;
  border-bottom: 2px solid transparent;
  color: var(--text-primary);
  font-size: 0.84rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
  border-bottom-color: var(--accent-primary);
}

.header-search {
  display: flex;
  align-items: stretch;
  min-width: 0;
  min-height: 2.75rem;
  border: 1px solid var(--border-strong);
  background: var(--bg-surface);
}

.header-search input {
  width: 100%;
  min-width: 0;
  padding: 0.55rem 0.7rem;
  border: 0;
  border-radius: 0;
  background: transparent;
  font-size: 0.9rem;
}

.header-search input:focus-visible {
  position: relative;
  z-index: 1;
  outline-offset: -3px;
}

.header-search button {
  flex: 0 0 auto;
  min-width: 4.4rem;
  padding: 0.45rem 0.7rem;
  border: 0;
  border-left: 1px solid var(--border-color);
  background: var(--accent-secondary);
  color: var(--text-inverse);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

.header-search button:hover {
  background: var(--accent-primary-hover);
}

/* Buttons and controls */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.85rem;
  max-width: 100%;
  padding: 0.65rem 1.05rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.25;
  text-align: center;
  text-decoration: none;
  overflow-wrap: anywhere;
  cursor: pointer;
}

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

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

.btn-secondary {
  border-color: var(--border-strong);
  background: transparent;
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--accent-secondary);
  color: var(--text-inverse);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.35rem;
}

/* Homepage hero */
.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(18rem, 0.9fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 4rem);
  padding-block: clamp(3rem, 6.5vw, 5.25rem);
  border-bottom: 1px solid var(--border-color);
}

.home-hero-copy,
.hero-profile-preview {
  min-width: 0;
}

.home-hero-copy h1 {
  max-width: 16ch;
  margin: 0;
  font-size: clamp(2.45rem, 5.1vw, 4.45rem);
  line-height: 1.03;
  letter-spacing: -0.055em;
}

.home-hero-intro {
  max-width: 56ch;
  margin-top: 1.25rem;
  color: var(--text-secondary);
  font-size: clamp(1rem, 1.5vw, 1.18rem);
  line-height: 1.65;
}

.home-proof-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 2rem 0 0;
  padding: 1rem 0 0;
  border-top: 1px solid var(--border-color);
  list-style: none;
}

.home-proof-points li {
  display: flex;
  flex-direction: column;
  min-width: 0;
  gap: 0.1rem;
}

.home-proof-points strong {
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
}

.home-proof-points span {
  color: var(--text-secondary);
  font-size: 0.76rem;
  line-height: 1.35;
}

.hero-profile-preview {
  padding: clamp(1.1rem, 2.5vw, 1.75rem);
  border: 1px solid var(--border-strong);
  background: var(--bg-surface);
}

.preview-topline,
.preview-robot-byline,
.preview-footer,
.profile-card-topline,
.profile-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.preview-topline .eyebrow {
  margin: 0;
}

.preview-index,
.preview-source-label {
  color: var(--text-secondary);
  font-size: 0.72rem;
}

.preview-robot-byline {
  justify-content: flex-start;
  margin-top: 1.25rem;
}

.preview-category {
  display: inline-flex;
  align-items: center;
  min-height: 1.65rem;
  padding: 0.2rem 0.5rem;
  background: var(--bg-subtle);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.preview-robot-name {
  margin-top: 0.75rem;
  font-size: clamp(1.35rem, 2.2vw, 1.8rem);
}

.preview-manufacturer {
  margin-top: 0.25rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.preview-description {
  margin-top: 0.8rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.preview-spec-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 1.2rem 0 0;
}

.preview-spec-grid > div {
  min-width: 0;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  background: var(--bg-main);
}

.preview-spec-grid dt,
.profile-spec-list dt {
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.preview-spec-grid dd,
.profile-spec-list dd {
  margin: 0.3rem 0 0;
  font-size: 0.88rem;
  font-weight: 700;
}

.preview-source-note {
  margin-top: 0.65rem;
  color: var(--text-secondary);
  font-size: 0.72rem;
}

.preview-footer {
  flex-wrap: wrap;
  margin-top: 1.1rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.8rem;
}

.text-link {
  color: var(--accent-primary-hover);
  font-weight: 700;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.17em;
}

.text-link:hover {
  color: var(--text-primary);
}

/* Start-here journey */
.home-path-section {
  padding-block: clamp(2.5rem, 4.8vw, 3.7rem);
}

.home-path-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 1.5rem;
}

.home-path-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 13rem;
  padding: 1.15rem;
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.home-path-card:hover {
  border-color: var(--accent-primary);
  background: #fff;
}

.path-index,
.application-label {
  color: var(--accent-primary-hover);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.home-path-card h3 {
  margin-top: 0.9rem;
  font-size: 1.05rem;
}

.home-path-card p {
  margin-top: 0.4rem;
  color: var(--text-secondary);
  font-size: 0.84rem;
}

.home-path-card .text-link {
  margin-top: auto;
  padding-top: 1rem;
  font-size: 0.82rem;
}

/* Category discovery: featured set plus a compact directory index */
.category-intro {
  margin-top: 0.8rem;
}

.category-feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.category-feature-card {
  display: grid;
  grid-template-columns: minmax(4.2rem, 0.22fr) minmax(0, 1fr);
  min-width: 0;
  min-height: 10rem;
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: inherit;
  text-decoration: none;
}

.category-feature-card:hover {
  border-color: var(--accent-primary);
  background: #fff;
}

.category-feature-index {
  display: grid;
  place-items: center;
  padding: 1rem 0.5rem;
  border-right: 1px solid var(--border-color);
  background: var(--bg-subtle);
  color: var(--accent-primary-hover);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
}

.category-feature-content {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 1rem 1.15rem;
}

.category-feature-content .eyebrow {
  margin-bottom: 0.35rem;
  font-size: 0.65rem;
}

.category-feature-content h3 {
  font-size: 1.1rem;
}

.category-feature-content p {
  margin-top: 0.35rem;
  color: var(--text-secondary);
  font-size: 0.83rem;
}

.category-count {
  margin-top: auto;
  padding-top: 0.7rem;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.category-index-wrap {
  display: grid;
  grid-template-columns: minmax(13rem, 0.7fr) minmax(0, 1.5fr);
  gap: 1.5rem;
  margin-top: 1.75rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--border-color);
}

.category-index-heading h3 {
  font-size: 1.05rem;
}

.category-index-heading p {
  margin-top: 0.35rem;
  font-size: 0.82rem;
}

.category-index-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.category-index-list a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  min-width: 0;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  font-weight: 650;
  text-decoration: none;
}

.category-index-list a:hover {
  color: var(--accent-primary-hover);
}

.category-index-list small {
  flex: 0 0 auto;
  color: var(--text-secondary);
  font-size: 0.67rem;
  font-weight: 500;
}

/* Featured robot profiles */
.home-robot-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.home-robot-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 1.15rem;
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
}

.profile-card-topline {
  align-items: flex-start;
  margin-bottom: 0.8rem;
}

.profile-card-topline .eyebrow {
  margin: 0;
  font-size: 0.66rem;
}

.profile-source-status {
  display: inline-block;
  max-width: 11rem;
  padding: 0.22rem 0.4rem;
  border: 1px solid var(--status-verified-text);
  background: var(--status-verified-bg);
  color: var(--status-verified-text);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  line-height: 1.25;
  text-align: right;
}

.home-robot-card h3 {
  font-size: 1.13rem;
}

.profile-maker {
  margin-top: 0.2rem;
  color: var(--text-secondary);
  font-size: 0.83rem;
}

.profile-application {
  margin-top: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.82rem;
}

.profile-spec-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.45rem;
  margin: 1rem 0 0;
}

.profile-spec-list > div {
  display: grid;
  grid-template-columns: minmax(5.6rem, 0.55fr) minmax(0, 1fr);
  gap: 0.6rem;
  padding-top: 0.55rem;
  border-top: 1px solid var(--border-color);
}

.profile-spec-list dd {
  margin-top: 0;
  font-size: 0.77rem;
  font-weight: 600;
}

.profile-card-footer {
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: 1rem;
  font-size: 0.75rem;
}

/* Comparison explanation */
.comparison-feature {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(17rem, 0.85fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
  padding: clamp(1.25rem, 4vw, 2.5rem);
  border: 1px solid var(--border-strong);
  background: var(--bg-subtle);
}

.comparison-copy h2 {
  max-width: 18ch;
}

.comparison-copy p {
  max-width: 58ch;
  margin-top: 0.65rem;
  color: var(--text-secondary);
}

.comparison-copy .btn {
  margin-top: 1.25rem;
}

.comparison-fields {
  min-width: 0;
  padding: 1rem;
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
}

.comparison-fields > div {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  align-items: center;
  gap: 0.65rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.85rem;
  font-weight: 650;
}

.field-number {
  color: var(--accent-primary-hover);
  font-family: var(--font-mono);
  font-size: 0.74rem;
}

.comparison-caveat {
  margin-top: 0.85rem;
  color: var(--text-secondary);
  font-size: 0.75rem;
}

/* Applications */
.application-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
  margin-top: 1.5rem;
}

.application-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 12rem;
  padding: 1.15rem;
  border-top: 2px solid var(--accent-primary);
  background: var(--bg-surface);
  color: inherit;
  text-decoration: none;
}

.application-card:hover {
  background: var(--bg-subtle);
}

.application-card h3 {
  margin-top: 0.65rem;
  font-size: 1.05rem;
}

.application-card p {
  margin-top: 0.4rem;
  color: var(--text-secondary);
  font-size: 0.82rem;
}

.application-card .text-link {
  margin-top: auto;
  padding-top: 0.9rem;
  font-size: 0.8rem;
}

/* Robotics Lab feature */
.lab-feature {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(16rem, 0.9fr);
  align-items: center;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding: clamp(1.35rem, 4vw, 2.5rem);
  background: var(--bg-workspace);
  color: var(--text-inverse);
}

.lab-feature h2 {
  color: var(--text-inverse);
}

.lab-feature-copy p {
  max-width: 58ch;
  margin-top: 0.75rem;
  color: #D1D6D2;
}

.lab-feature .btn-secondary {
  border-color: #79817B;
  color: var(--text-inverse);
}

.lab-feature .btn-secondary:hover {
  background: #343A38;
}

.kinematics-diagram {
  min-width: 0;
}

.kinematics-diagram svg {
  width: 100%;
  height: auto;
  border: 1px solid #4A544E;
}

.kinematics-diagram figcaption {
  margin-top: 0.55rem;
  color: #C2C7C4;
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

/* Engineering guides and research */
.reading-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
}

.reading-links a {
  color: var(--accent-primary-hover);
  font-size: 0.84rem;
  font-weight: 700;
}

.home-reading-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.home-reading-card {
  min-width: 0;
  padding: 1.15rem;
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
}

.home-reading-card .eyebrow {
  font-size: 0.65rem;
}

.home-reading-card h3 {
  margin-top: 0.35rem;
  font-size: 1.05rem;
}

.home-reading-card h3 a {
  color: var(--text-primary);
  text-decoration: none;
}

.home-reading-card h3 a:hover {
  color: var(--accent-primary-hover);
  text-decoration: underline;
}

.home-reading-card p {
  margin-top: 0.45rem;
  color: var(--text-secondary);
  font-size: 0.84rem;
}

.home-reading-card time {
  display: block;
  margin-top: 0.85rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

/* Data quality and final invitation */
.data-quality-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(1.25rem, 4vw, 3rem);
  padding: clamp(1.25rem, 3.5vw, 2.25rem);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
}

.data-quality-panel h2 {
  max-width: 18ch;
}

.data-quality-copy p + p {
  margin-top: 0.8rem;
}

.data-quality-copy p {
  color: var(--text-secondary);
  font-size: 0.88rem;
}

.data-quality-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-top: 1rem;
}

.data-quality-links a {
  color: var(--accent-primary-hover);
  font-weight: 700;
}

.home-final-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: clamp(2.5rem, 5vw, 4rem);
}

.home-final-cta h2 {
  max-width: 22ch;
}

.home-final-cta .hero-actions {
  margin-top: 0;
}

/* Legacy site sections and content cards */
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  align-items: center;
  gap: 2.5rem;
  padding-block: 2.75rem;
  border-bottom: 1px solid var(--border-color);
}

.hero-technical-frame {
  min-width: 0;
  padding: 1rem;
  border: 1px solid var(--border-strong);
  background: var(--bg-surface);
}

.hero-technical-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.4rem 1rem;
  margin-top: 0.65rem;
  padding-top: 0.65rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.category-matrix {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 15rem), 1fr));
  border-top: 1px solid var(--border-color);
  border-left: 1px solid var(--border-color);
}

.category-cell {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-width: 0;
  padding: 1.15rem;
  border-right: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: inherit;
  text-decoration: none;
}

.category-cell:hover {
  background: var(--bg-subtle);
}

.robot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
  gap: 1rem;
}

.robot-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
}

.robot-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.65rem;
  min-width: 0;
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--border-color);
}

.robot-card-header > div {
  min-width: 0;
}

.robot-card-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 0.85rem;
  min-width: 0;
  padding: 1.1rem;
}

.verification-badge {
  display: inline-block;
  max-width: 100%;
  padding: 0.18rem 0.45rem;
  border: 1px solid currentColor;
  background: var(--status-verified-bg);
  color: var(--status-verified-text);
  font-family: var(--font-mono);
  font-size: 0.67rem;
  line-height: 1.3;
  white-space: normal;
}

.verification-badge.discrepancy {
  background: var(--status-discrepancy-bg);
  color: var(--status-discrepancy-text);
}

.robot-card-media {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-subtle);
}

.spec-mini-table {
  width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.spec-mini-table th,
.spec-mini-table td {
  padding: 0.4rem 0.25rem 0.4rem 0;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
  vertical-align: top;
}

.spec-mini-table th {
  width: 42%;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-weight: 600;
}

/* Comparison table stays inside its labeled, scrollable region */
.comparison-scroll-wrapper {
  width: 100%;
  min-width: 0;
  overflow-x: auto;
  border: 1px solid var(--border-strong);
  background: var(--bg-surface);
  overscroll-behavior-inline: contain;
  -webkit-overflow-scrolling: touch;
}

.comparison-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
  padding: 0.75rem 0.85rem;
  border-right: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  text-align: left;
  vertical-align: top;
  font-size: 0.84rem;
}

.comparison-table th:first-child,
.comparison-table td:first-child {
  position: sticky;
  z-index: 2;
  left: 0;
  width: 185px;
  border-right: 2px solid var(--border-strong);
  background: var(--bg-subtle);
  font-family: var(--font-sans);
  font-weight: 700;
}

/* Engineering controls and existing lab tools */
.lab-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(260px, 0.9fr);
  min-width: 0;
  border: 1px solid var(--border-strong);
  background: var(--bg-workspace);
  color: var(--text-inverse);
}

.lab-canvas-stage {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  min-height: 400px;
  padding: 1rem;
  border-right: 1px solid #3A423E;
}

.lab-canvas-stage canvas {
  width: 100%;
  height: auto;
}

.lab-controls-panel {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  min-width: 0;
  padding: 1.25rem;
  background: #1A1E1B;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-width: 0;
}

.control-group label {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.control-group input[type="range"] {
  width: 100%;
  accent-color: var(--accent-primary);
}

pre {
  max-width: 100%;
  white-space: pre-wrap;
}

/* Footer */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-strong);
  background: var(--bg-main);
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(14rem, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: 2rem;
  padding-block: 2.25rem;
}

.footer-brand-block,
.footer-group {
  min-width: 0;
}

.footer-brand {
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.footer-brand-block p {
  margin-top: 0.55rem;
  color: var(--text-secondary);
  font-size: 0.82rem;
}

.footer-group h2 {
  margin-bottom: 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.footer-group ul {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-group a {
  color: var(--text-secondary);
  font-size: 0.8rem;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

.footer-group a:hover {
  color: var(--accent-primary-hover);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.45rem 1rem;
  padding-block: 0.85rem 1rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.72rem;
}

/* Preserve legibility across screen sizes */
@media (max-width: 1100px) {
  .header-inner {
    grid-template-columns: max-content minmax(0, 1fr);
    gap: 0.6rem 1.25rem;
    padding-block: 0.65rem;
  }

  .header-search {
    grid-column: 1 / -1;
    justify-self: end;
    width: min(100%, 31rem);
  }

  .home-hero {
    grid-template-columns: minmax(0, 1fr) minmax(17rem, 0.85fr);
    gap: 2rem;
  }

  .home-path-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .home-robot-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .home-robot-card:last-child:nth-child(odd) {
    grid-column: 1 / -1;
  }

  .application-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .home-hero {
    grid-template-columns: minmax(0, 1fr);
  }

  .home-hero-copy h1 {
    max-width: 18ch;
  }

  .hero-profile-preview {
    max-width: 44rem;
  }

  .comparison-feature,
  .lab-feature,
  .data-quality-panel {
    grid-template-columns: minmax(0, 1fr);
  }

  .comparison-fields,
  .kinematics-diagram {
    max-width: 42rem;
  }

  .lab-workspace {
    grid-template-columns: minmax(0, 1fr);
  }

  .lab-canvas-stage {
    min-height: 320px;
    border-right: 0;
    border-bottom: 1px solid #3A423E;
  }

  .footer-main {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-brand-block {
    grid-column: 1 / -1;
  }
}

@media (max-width: 880px) {
  .header-inner {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0.55rem;
    min-height: auto;
    padding-block: 0.65rem;
  }

  .header-brand-row {
    width: 100%;
  }

  .brand-logo {
    font-size: 0.84rem;
  }

  .brand-logo-image {
    width: min(13.75rem, 55vw);
  }

  .mobile-nav-toggle {
    display: inline-flex;
  }

  .primary-nav {
    position: static;
    display: none;
    width: 100%;
    padding: 0.35rem 0;
    border-top: 1px solid var(--border-color);
  }

  .primary-nav.nav-open {
    display: block;
  }

  .primary-nav ul {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
  }

  .primary-nav a {
    display: flex;
    width: 100%;
    min-height: 2.9rem;
    padding: 0.65rem 0.7rem;
    border-bottom: 0;
    border-left: 3px solid transparent;
    white-space: normal;
  }

  .primary-nav li + li {
    border-top: 1px solid var(--border-color);
  }

  .primary-nav a:hover,
  .primary-nav a[aria-current="page"] {
    border-left-color: var(--accent-primary);
    background: var(--bg-subtle);
  }

  .header-search {
    grid-column: auto;
    width: 100%;
    justify-self: stretch;
  }

  .section-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .home-proof-points {
    margin-top: 1.5rem;
  }

  .category-index-wrap {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.8rem;
  }

  .home-robot-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .home-robot-card:last-child:nth-child(odd) {
    grid-column: auto;
  }

  .home-final-cta {
    align-items: flex-start;
    flex-direction: column;
  }

  .home-final-cta .hero-actions {
    width: 100%;
  }

  .home-final-cta .btn {
    flex: 1 1 auto;
  }
}

@media (max-width: 560px) {
  .category-feature-grid,
  .home-reading-grid,
  .application-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .category-index-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .home-path-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .home-path-card {
    min-height: 0;
  }

  .hero-actions {
    align-items: stretch;
  }

  .hero-actions .btn {
    flex: 1 1 100%;
  }

  .preview-spec-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .category-feature-card {
    grid-template-columns: 3.5rem minmax(0, 1fr);
  }

  .profile-card-topline,
  .profile-card-footer {
    align-items: flex-start;
  }

  .profile-spec-list > div {
    grid-template-columns: minmax(4.8rem, 0.7fr) minmax(0, 1fr);
  }

  .footer-main {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem 1rem;
    padding-block: 1.5rem;
  }

  .footer-brand-block {
    grid-column: 1 / -1;
    max-width: 36rem;
  }

  .footer-group h2 {
    font-size: 0.7rem;
    margin-bottom: 0.5rem;
  }

  .footer-group ul {
    gap: 0.45rem;
  }

  .footer-group a {
    display: inline-block;
    font-size: 0.78rem;
    line-height: 1.45;
    padding-block: 0.08rem;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}