/* ==========================================================================
   ORTHOTECT: World-Class Interactive Design System & Showcase Stylesheet
   Architecture: 100% CSS Logical Properties | W3C DTCG Tokens | WCAG 2.2 AAA
   ========================================================================== */

:root,
[data-theme="dark"] {
  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  /* Official Orthotect DTCG Brand Tokens */
  --ortho-canvas: #090d16;
  --ortho-surface-1: #0f1626;
  --ortho-surface-2: #162035;
  --ortho-surface-3: #1f2d48;
  --ortho-surface-elevated: #28395a;

  --ortho-border-subtle: rgba(255, 255, 255, 0.08);
  --ortho-border-medium: rgba(255, 255, 255, 0.16);
  --ortho-border-active: #00d2ff;

  --ortho-text-primary: #f8fafc;
  --ortho-text-secondary: #94a3b8;
  --ortho-text-muted: #64748b;

  --ortho-brand-blue: #1f69ff;
  --ortho-brand-cyan: #00d2ff;
  --ortho-brand-purple: #7b42f6;
  --ortho-brand-gradient: linear-gradient(135deg, #00d2ff 0%, #1f69ff 50%, #7b42f6 100%);

  --ortho-accent-cyan: #00d2ff;
  --ortho-accent-glow: rgba(0, 210, 255, 0.28);
  --ortho-success: #10b981;
  --ortho-success-bg: rgba(16, 185, 129, 0.12);
  --ortho-danger: #ef4444;
  --ortho-danger-bg: rgba(239, 68, 68, 0.12);
  --ortho-warning: #f59e0b;
  --ortho-warning-bg: rgba(245, 158, 11, 0.12);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-pill: 9999px;

  --transition-fast: 150ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-bounce: 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

[data-theme="light"] {
  --ortho-canvas: #f8fafc;
  --ortho-surface-1: #ffffff;
  --ortho-surface-2: #f1f5f9;
  --ortho-surface-3: #e2e8f0;
  --ortho-surface-elevated: #ffffff;

  --ortho-border-subtle: rgba(0, 0, 0, 0.08);
  --ortho-border-medium: rgba(0, 0, 0, 0.16);
  --ortho-border-active: #0284c7;

  --ortho-text-primary: #0f172a;
  --ortho-text-secondary: #334155;
  --ortho-text-muted: #64748b;

  --ortho-accent-cyan: #0284c7;
  --ortho-accent-glow: rgba(2, 132, 199, 0.15);
  --ortho-success: #059669;
  --ortho-success-bg: rgba(5, 150, 105, 0.12);
  --ortho-danger: #dc2626;
  --ortho-danger-bg: rgba(220, 38, 38, 0.12);
  --ortho-warning: #d97706;
  --ortho-warning-bg: rgba(217, 119, 6, 0.12);
}

[data-theme="contrast"] {
  --ortho-canvas: #000000;
  --ortho-surface-1: #0a0a0a;
  --ortho-surface-2: #141414;
  --ortho-surface-3: #1f1f1f;
  --ortho-surface-elevated: #292929;

  --ortho-border-subtle: #ffffff;
  --ortho-border-medium: #ffffff;
  --ortho-border-active: #00ffff;

  --ortho-text-primary: #ffffff;
  --ortho-text-secondary: #e0e0e0;
  --ortho-text-muted: #cccccc;

  --ortho-accent-cyan: #00ffff;
  --ortho-accent-glow: rgba(0, 255, 255, 0.4);
  --ortho-success: #00ff66;
  --ortho-success-bg: rgba(0, 255, 102, 0.2);
  --ortho-danger: #ff3333;
  --ortho-danger-bg: rgba(255, 51, 51, 0.2);
  --ortho-warning: #ffff00;
  --ortho-warning-bg: rgba(255, 255, 0, 0.2);
}

/* Base Reset & Typography */
* {
  box-sizing: border-box;
  margin-block: 0;
  margin-inline: 0;
  padding-block: 0;
  padding-inline: 0;
}

html {
  overflow-x: hidden;
  max-inline-size: 100vw;
}

body {
  font-family: var(--font-sans);
  background-color: var(--ortho-canvas);
  color: var(--ortho-text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  max-inline-size: 100vw;
  background-image: 
    radial-gradient(circle at 50% -80px, rgba(31, 105, 255, 0.2) 0%, rgba(0, 210, 255, 0.07) 38%, transparent 72%),
    radial-gradient(circle at 90% 120px, rgba(123, 66, 246, 0.1) 0%, transparent 45%),
    radial-gradient(circle at 10% 180px, rgba(0, 210, 255, 0.08) 0%, transparent 40%),
    linear-gradient(to right, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 100% 100%, 48px 48px, 48px 48px;
  background-position: center top, center top, center top, center top, center top;
}

[data-theme="light"] body {
  background-color: #f8fafc;
  background-image: 
    radial-gradient(circle at 50% -80px, rgba(31, 105, 255, 0.08) 0%, rgba(0, 210, 255, 0.04) 38%, transparent 72%),
    linear-gradient(to right, rgba(0, 0, 0, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
  background-size: 100% 100%, 48px 48px, 48px 48px;
}

h1, h2, h3, h4, .hero-title, .section-title, .brand-text {
  font-family: var(--font-heading);
}

.container {
  inline-size: 100%;
  max-inline-size: 1240px;
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.section-pad {
  padding-block: 4rem;
}

/* Page View Visibility Switching */
.page-view {
  display: none;
}
.page-view.active {
  display: block;
}

/* Header & Navigation Architecture */
.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 100;
  background-color: rgba(6, 9, 17, 0.82);
  border-block-end: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

[data-theme="light"] .site-header {
  background-color: rgba(255, 255, 255, 0.88);
  border-block-end: 1px solid rgba(0, 0, 0, 0.08);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.8rem;
  gap: 1rem;
  min-inline-size: 0;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo-img {
  display: block;
  block-size: 32px;
  inline-size: auto;
  max-inline-size: 140px;
  object-fit: contain;
  transition: opacity var(--transition-fast);
}

.brand-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.15rem 0.55rem;
  border-radius: var(--radius-pill);
  background: rgba(0, 210, 255, 0.09);
  border: 1px solid rgba(0, 210, 255, 0.3);
  color: var(--ortho-accent-cyan);
  font-family: var(--font-mono);
  white-space: nowrap;
}

/* Desktop Navigation Island */
.desktop-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem 0.35rem;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-pill);
  backdrop-filter: blur(12px);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.05);
}

[data-theme="light"] .desktop-nav {
  background: rgba(0, 0, 0, 0.035);
  border-color: rgba(0, 0, 0, 0.07);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  list-style: none;
}

.nav-link {
  color: var(--ortho-text-secondary);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-pill);
  white-space: nowrap;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-link:hover {
  color: var(--ortho-text-primary);
  background: rgba(255, 255, 255, 0.08);
}

.nav-link.active {
  color: var(--ortho-accent-cyan);
  background: rgba(0, 210, 255, 0.12);
  font-weight: 600;
}

.nav-link:focus-visible,
.btn-ctrl:focus-visible,
.mobile-nav-link:focus-visible {
  outline: 2px solid var(--ortho-accent-cyan);
  outline-offset: 2px;
}

/* Responsive Mobile Navigation Drawer */
.mobile-menu-toggle,
.btn-ctrl.mobile-menu-toggle {
  display: none !important;
}

.mobile-nav-drawer {
  position: fixed;
  inset: 0;
  z-index: 1000;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  display: none !important;
  overflow: hidden;
  transition: opacity 220ms ease, visibility 220ms ease;
}

.mobile-nav-drawer.open {
  display: block !important;
  pointer-events: auto;
  opacity: 1;
  visibility: visible;
}

.mobile-nav-backdrop {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.mobile-nav-content {
  position: absolute;
  inset-block: 0;
  inset-inline-end: 0;
  inline-size: min(320px, 85vw);
  background-color: var(--ortho-surface-1);
  border-inline-start: 1px solid var(--ortho-border-subtle);
  display: flex;
  flex-direction: column;
  padding: 1.25rem;
  box-shadow: -8px 0 28px rgba(0, 0, 0, 0.5);
  transform: translateX(100%);
  transition: transform 250ms cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
}

[dir="rtl"] .mobile-nav-content {
  transform: translateX(-100%);
  border-inline-start: none;
  border-inline-end: 1px solid var(--ortho-border-subtle);
  box-shadow: 8px 0 28px rgba(0, 0, 0, 0.5);
}

.mobile-nav-drawer.open .mobile-nav-content {
  transform: translateX(0);
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block-end: 1rem;
  border-block-end: 1px solid var(--ortho-border-subtle);
  margin-block-end: 1rem;
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.mobile-nav-link {
  min-block-size: 44px;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-inline: 0.9rem;
  border-radius: var(--radius-md);
  color: var(--ortho-text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.mobile-nav-link:hover {
  background-color: var(--ortho-surface-2);
  color: var(--ortho-text-primary);
}

.mobile-nav-link.active {
  background-color: var(--ortho-surface-2);
  color: var(--ortho-accent-cyan);
  font-weight: 700;
}

.m-nav-dot {
  inline-size: 7px;
  block-size: 7px;
  border-radius: var(--radius-pill);
  background-color: var(--ortho-border-active);
  opacity: 0.5;
}

.mobile-nav-link.active .m-nav-dot {
  opacity: 1;
  box-shadow: 0 0 8px var(--ortho-accent-glow);
}

body.nav-open {
  overflow: hidden;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.btn-ctrl {
  background: rgba(255, 255, 255, 0.04);
  color: var(--ortho-text-primary);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  backdrop-filter: blur(8px);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.btn-ctrl:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.24);
  color: #ffffff;
  transform: translateY(-1px);
}

[data-theme="light"] .btn-ctrl {
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.12);
  color: var(--ortho-text-primary);
}

[data-theme="light"] .btn-ctrl:hover {
  background: rgba(0, 0, 0, 0.08);
  border-color: rgba(0, 0, 0, 0.2);
}

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.theme-btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ortho-accent-cyan);
}

.theme-btn-icon svg {
  display: none;
}

[data-theme="dark"] .theme-btn-icon .icon-moon {
  display: block;
}

[data-theme="light"] .theme-btn-icon .icon-sun {
  display: block;
}

[data-theme="contrast"] .theme-btn-icon .icon-contrast {
  display: block;
}

.btn-ctrl-accent {
  background: rgba(0, 210, 255, 0.12);
  color: var(--ortho-accent-cyan);
  border: 1px solid rgba(0, 210, 255, 0.35);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.btn-ctrl-accent:hover {
  background-color: var(--ortho-accent-cyan);
  color: #050811;
  box-shadow: 0 0 16px var(--ortho-accent-glow);
}

.btn-primary-action {
  background: linear-gradient(135deg, #00d2ff 0%, #1f69ff 100%);
  color: #050811;
  border: none;
  padding-block: 0.75rem;
  padding-inline: 1.5rem 1.15rem;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  box-shadow: 0 0 24px rgba(0, 210, 255, 0.35);
  transition: all var(--transition-fast);
}

.btn-primary-action:hover {
  box-shadow: 0 0 35px rgba(0, 210, 255, 0.55);
  transform: translateY(-2px);
  color: #050811;
}

.btn-primary-action:active {
  transform: translateY(0);
}

.btn-arrow-circle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 26px;
  block-size: 26px;
  border-radius: 50%;
  background: rgba(5, 8, 17, 0.2);
  transition: transform var(--transition-fast), background-color var(--transition-fast);
  flex-shrink: 0;
}

.btn-primary-action:hover .btn-arrow-circle {
  background: rgba(5, 8, 17, 0.35);
  transform: translateX(3px);
}

[dir="rtl"] .btn-primary-action:hover .btn-arrow-circle {
  transform: translateX(-3px);
}

[dir="rtl"] .btn-arrow-circle svg {
  transform: rotate(180deg);
}

.btn-arrow {
  display: inline-block;
  transition: transform var(--transition-fast);
}

.btn-primary-action:hover .btn-arrow {
  transform: translateX(3px);
}

[dir="rtl"] .btn-primary-action:hover .btn-arrow {
  transform: translateX(-3px);
}

.btn-secondary-action {
  background: rgba(255, 255, 255, 0.05);
  color: #f8fafc;
  border: 1px solid rgba(255, 255, 255, 0.14);
  padding: 0.8rem 1.5rem;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  backdrop-filter: blur(14px);
  transition: all var(--transition-fast);
}

.btn-secondary-action:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.28);
  transform: translateY(-2px);
  color: #ffffff;
}

[data-theme="light"] .btn-secondary-action {
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.12);
  color: var(--ortho-text-primary);
}

.btn-tertiary-action {
  background: transparent;
  color: var(--ortho-text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.8rem 1.4rem;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.btn-tertiary-action:hover {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.04);
  transform: translateY(-2px);
}

[data-theme="light"] .btn-tertiary-action {
  border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .btn-tertiary-action:hover {
  color: #0f172a;
  background: rgba(0, 0, 0, 0.04);
}

/* Hero Section */
.hero-section {
  padding-block: 5.5rem 4rem;
  text-align: center;
  position: relative;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding-block: 0.35rem;
  padding-inline: 0.65rem 1rem;
  border-radius: var(--radius-pill);
  background: rgba(13, 19, 33, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 0 1px rgba(0, 210, 255, 0.15), 0 8px 24px -4px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  text-decoration: none;
  color: var(--ortho-text-primary);
  margin-block-end: 2rem;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.hero-pill:hover {
  background: rgba(22, 32, 53, 0.95);
  border-color: rgba(0, 210, 255, 0.35);
  box-shadow: 0 0 0 1px rgba(0, 210, 255, 0.3), 0 12px 28px -4px rgba(0, 210, 255, 0.2);
  transform: translateY(-1px);
}

[data-theme="light"] .hero-pill {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(0, 0, 0, 0.08);
  box-shadow: 0 0 0 1px rgba(2, 132, 199, 0.15), 0 4px 16px rgba(0, 0, 0, 0.06);
  color: var(--ortho-text-primary);
}

[data-theme="light"] .hero-pill:hover {
  background: #ffffff;
  border-color: rgba(2, 132, 199, 0.3);
  box-shadow: 0 0 0 1px rgba(2, 132, 199, 0.25), 0 8px 20px rgba(2, 132, 199, 0.15);
}

.pill-live-status {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 14px;
  block-size: 14px;
}

.status-dot-pulse {
  position: absolute;
  inline-size: 100%;
  block-size: 100%;
  border-radius: 50%;
  background-color: var(--ortho-accent-cyan);
  opacity: 0.4;
  animation: pulse-ring 2.2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.status-dot {
  position: relative;
  inline-size: 7px;
  block-size: 7px;
  background-color: var(--ortho-accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--ortho-accent-cyan);
}

@keyframes pulse-ring {
  0%, 100% { opacity: 0.8; transform: scale(1); }
  50% { opacity: 0.15; transform: scale(1.6); }
}

.pill-version-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  padding-block: 0.1rem;
  padding-inline: 0.45rem;
  border-radius: var(--radius-pill);
  background: rgba(0, 210, 255, 0.12);
  border: 1px solid rgba(0, 210, 255, 0.3);
  color: var(--ortho-accent-cyan);
  line-height: 1.2;
}

[data-theme="light"] .pill-version-tag {
  background: rgba(2, 132, 199, 0.1);
  border-color: rgba(2, 132, 199, 0.25);
  color: var(--ortho-accent-cyan);
}

.pill-divider {
  inline-size: 1px;
  block-size: 14px;
  background: rgba(255, 255, 255, 0.15);
}

[data-theme="light"] .pill-divider {
  background: rgba(0, 0, 0, 0.12);
}

.pill-text {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--ortho-text-secondary);
  transition: color var(--transition-fast);
}

.hero-pill:hover .pill-text {
  color: var(--ortho-text-primary);
}

.pill-arrow {
  font-size: 0.85rem;
  color: var(--ortho-accent-cyan);
  transition: transform var(--transition-fast);
  margin-inline-start: 0.15rem;
}

.hero-pill:hover .pill-arrow {
  transform: translate(2px, -2px);
}

[dir="rtl"] .hero-pill:hover .pill-arrow {
  transform: translate(-2px, -2px);
}

.hero-title {
  font-size: clamp(2.4rem, 5.5vw, 4.4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.04em;
  color: #f8fafc;
  background: linear-gradient(180deg, #ffffff 30%, #cbd5e1 95%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  max-inline-size: 960px;
  margin-inline: auto;
  margin-block-end: 1.5rem;
}

[data-theme="light"] .hero-title {
  color: #0f172a;
  background: linear-gradient(180deg, #0f172a 40%, #475569 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="contrast"] .hero-title {
  background: none;
  -webkit-text-fill-color: initial;
  color: #ffffff;
}

.hero-gradient-text {
  background: linear-gradient(135deg, #00d2ff 0%, #1f69ff 50%, #7b42f6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  filter: drop-shadow(0 0 35px rgba(0, 210, 255, 0.25));
}

.hero-subtitle {
  max-inline-size: 720px;
  margin-inline: auto;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--ortho-text-secondary);
  margin-block-end: 2.75rem;
  line-height: 1.65;
  font-weight: 400;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.15rem;
  margin-block-end: 3.5rem;
  flex-wrap: wrap;
}

/* Glass Telemetry Strip (Proof Bar) */
.proof-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  background: rgba(13, 19, 33, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 18px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6), inset 0 1px 1px rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  overflow: hidden;
  max-inline-size: 1040px;
  margin-inline: auto;
  margin-block-end: 3.5rem;
}

[data-theme="light"] .proof-grid {
  background: rgba(255, 255, 255, 0.85);
  border-color: rgba(0, 0, 0, 0.08);
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.08);
}

.proof-card {
  position: relative;
  overflow: hidden;
  padding-block: 1.5rem;
  padding-inline: 1rem;
  text-align: center;
  border-inline-end: 1px solid rgba(255, 255, 255, 0.06);
  transition: background-color var(--transition-fast);
}

.proof-accent-bar {
  position: absolute;
  inset-block-start: 0;
  inset-inline: 0;
  block-size: 2px;
  background: linear-gradient(90deg, transparent, var(--ortho-accent-cyan), transparent);
  opacity: 0.35;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.proof-card:hover .proof-accent-bar {
  opacity: 1;
  transform: scaleX(1.15);
}

[data-theme="light"] .proof-card {
  border-inline-end-color: rgba(0, 0, 0, 0.06);
}

.proof-card:last-child {
  border-inline-end: none;
}

.proof-card:hover {
  background-color: rgba(255, 255, 255, 0.03);
}

[data-theme="light"] .proof-card:hover {
  background-color: rgba(0, 0, 0, 0.02);
}

.proof-val {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--ortho-accent-cyan);
  margin-block-end: 0.35rem;
}

.proof-lbl {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ortho-text-secondary);
}

@media (max-width: 860px) {
  .proof-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .proof-card:nth-child(2) {
    border-inline-end: none;
  }
  .proof-card:last-child {
    grid-column: span 2;
  }
}

/* Live Proof Terminal Window */
.hero-terminal {
  max-inline-size: 920px;
  margin-inline: auto;
  background: rgba(10, 15, 26, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.7), 0 0 40px rgba(0, 210, 255, 0.12), inset 0 1px 1px rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  overflow: hidden;
  text-align: start;
}

[data-theme="light"] .hero-terminal {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(0, 0, 0, 0.1);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.12);
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.25rem;
  background: rgba(255, 255, 255, 0.03);
  border-block-end: 1px solid rgba(255, 255, 255, 0.07);
}

[data-theme="light"] .terminal-header {
  background: rgba(0, 0, 0, 0.02);
  border-block-end-color: rgba(0, 0, 0, 0.06);
}

.terminal-dots {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.dot {
  inline-size: 11px;
  block-size: 11px;
  border-radius: 50%;
}
.dot-red { background-color: #ff5f56; }
.dot-yellow { background-color: #ffbd2e; }
.dot-green { background-color: #27c93f; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ortho-text-secondary);
  letter-spacing: 0.02em;
}

.terminal-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-pill);
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: var(--ortho-success);
  letter-spacing: 0.05em;
}

.terminal-body {
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.terminal-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.04);
}

[data-theme="light"] .terminal-row {
  background: rgba(0, 0, 0, 0.02);
  border-color: rgba(0, 0, 0, 0.04);
}

.term-status {
  font-weight: 700;
  color: var(--ortho-success);
  flex-shrink: 0;
}

.term-time {
  color: var(--ortho-text-muted);
  font-size: 0.75rem;
  flex-shrink: 0;
}

.term-gate {
  color: var(--ortho-text-primary);
  font-weight: 600;
  flex-grow: 1;
}

.term-detail {
  color: var(--ortho-accent-cyan);
  font-size: 0.75rem;
  flex-shrink: 0;
}

.terminal-footer {
  margin-block-start: 0.65rem;
  padding-block-start: 0.85rem;
  border-block-start: 1px solid rgba(255, 255, 255, 0.07);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.78rem;
  color: var(--ortho-text-secondary);
}

[data-theme="light"] .terminal-footer {
  border-block-start-color: rgba(0, 0, 0, 0.06);
}

.term-prompt {
  color: var(--ortho-accent-cyan);
  font-weight: 800;
}

.term-certified {
  font-size: 0.7rem;
  font-weight: 800;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-pill);
  background: rgba(0, 210, 255, 0.15);
  border: 1px solid rgba(0, 210, 255, 0.4);
  color: var(--ortho-accent-cyan);
  letter-spacing: 0.05em;
  box-shadow: 0 0 15px rgba(0, 210, 255, 0.25);
}

.term-certified.fail {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.4);
  color: var(--ortho-danger);
  box-shadow: 0 0 15px rgba(239, 68, 68, 0.25);
}

.terminal-badge.fail {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.35);
  color: var(--ortho-danger);
}

.terminal-row.fail {
  border-color: rgba(239, 68, 68, 0.3);
  background: rgba(239, 68, 68, 0.05);
}

.terminal-row.fail .term-status,
.terminal-row.fail .term-detail {
  color: var(--ortho-danger);
}

/* Section Headers */
.section-hdr {
  text-align: center;
  max-inline-size: 780px;
  margin-inline: auto;
  margin-block-end: 2.5rem;
}

.section-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ortho-accent-cyan);
  padding-block: 0.25rem;
  padding-inline: 0.75rem;
  background: rgba(0, 210, 255, 0.08);
  border: 1px solid rgba(0, 210, 255, 0.2);
  border-radius: var(--radius-pill);
  margin-block-end: 0.85rem;
  font-family: var(--font-mono);
  box-shadow: 0 0 12px rgba(0, 210, 255, 0.08);
}

[data-theme="light"] .section-pill {
  background: rgba(2, 132, 199, 0.08);
  border-color: rgba(2, 132, 199, 0.2);
  color: var(--ortho-accent-cyan);
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-block-end: 0.75rem;
  background: linear-gradient(180deg, #ffffff 30%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--ortho-text-primary);
}

[data-theme="light"] .section-title {
  background: linear-gradient(180deg, #090d16 40%, #475569 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--ortho-text-primary);
}

[data-theme="contrast"] .section-title {
  background: none;
  -webkit-text-fill-color: initial;
  color: #ffffff;
}

.section-subtitle {
  color: var(--ortho-text-secondary);
  font-size: 1rem;
}

/* Pipeline Flow Diagram */
.pipeline-flow-diagram {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 0.75rem;
  margin-block: 2rem 3.5rem;
  flex-wrap: wrap;
}

.flow-step {
  flex: 1 1 200px;
  background-color: var(--ortho-surface-1);
  border: 1px solid var(--ortho-border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: start;
  position: relative;
  transition: border-color var(--transition-fast);
}

.flow-step:hover {
  border-color: var(--ortho-border-active);
}

.active-gate-step {
  border-color: var(--ortho-accent-cyan);
  background-color: var(--ortho-surface-2);
}

.flow-step-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ortho-accent-cyan);
  margin-block-end: 0.75rem;
}

.flow-step-icon {
  color: var(--ortho-text-primary);
  margin-block-end: 0.75rem;
}

.flow-step-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-block-end: 0.4rem;
}

.flow-step-desc {
  font-size: 0.8rem;
  color: var(--ortho-text-secondary);
  line-height: 1.5;
}

.flow-arrow {
  display: flex;
  align-items: center;
  color: var(--ortho-text-muted);
  font-size: 1.5rem;
  font-weight: bold;
}

/* Problem / Solution Overview Boxes */
.comparison-overview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-block-end: 4rem;
}

.overview-box {
  background-color: var(--ortho-surface-1);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  border: 1px solid var(--ortho-border-subtle);
  text-align: start;
}

.problem-box {
  border-inline-start: 4px solid var(--ortho-danger);
}

.solution-box {
  border-inline-start: 4px solid var(--ortho-success);
}

.overview-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding-inline: 0.6rem;
  padding-block: 0.2rem;
  border-radius: var(--radius-pill);
  margin-block-end: 1rem;
}

.bad-badge {
  background-color: var(--ortho-danger-bg);
  color: var(--ortho-danger);
}

.good-badge {
  background-color: var(--ortho-success-bg);
  color: var(--ortho-success);
}

.overview-list {
  list-style: none;
  font-size: 0.88rem;
  color: var(--ortho-text-secondary);
}

.overview-list li {
  margin-block-end: 0.75rem;
  padding-inline-start: 1.25rem;
  position: relative;
}

.overview-list li::before {
  content: "•";
  position: absolute;
  inset-inline-start: 0;
  color: var(--ortho-text-muted);
}

/* ==========================================================================
   PAGE 2: SKILL CATALOG STYLES
   ========================================================================== */
.catalog-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-block-end: 2rem;
  flex-wrap: wrap;
}

.search-wrap {
  position: relative;
  flex: 1 1 320px;
}

.search-icon {
  position: absolute;
  inset-inline-start: 0.85rem;
  inset-block-start: 50%;
  transform: translateY(-50%);
  color: var(--ortho-text-muted);
}

.search-input {
  inline-size: 100%;
  background-color: var(--ortho-surface-1);
  border: 1px solid var(--ortho-border-medium);
  color: var(--ortho-text-primary);
  border-radius: var(--radius-sm);
  padding-inline-start: 2.5rem;
  padding-inline-end: 1rem;
  padding-block: 0.6rem;
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.search-input:focus {
  border-color: var(--ortho-accent-cyan);
}

.filter-pills {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.filter-pill {
  background-color: var(--ortho-surface-1);
  color: var(--ortho-text-secondary);
  border: 1px solid var(--ortho-border-subtle);
  padding-inline: 0.75rem;
  padding-block: 0.4rem;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-pill:hover,
.filter-pill.active {
  background-color: var(--ortho-accent-cyan);
  color: #090c10;
  font-weight: 600;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 1.5rem;
}

.skill-card {
  background: rgba(13, 19, 33, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5), inset 0 1px 1px rgba(255, 255, 255, 0.06);
  transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

[data-theme="light"] .skill-card {
  background: rgba(255, 255, 255, 0.85);
  border-color: rgba(0, 0, 0, 0.08);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05);
}

.skill-card:hover {
  border-color: rgba(0, 210, 255, 0.35);
  transform: translateY(-3px);
  box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.7), 0 0 25px rgba(0, 210, 255, 0.12);
}

[data-theme="light"] .skill-card:hover {
  border-color: rgba(0, 150, 210, 0.4);
  box-shadow: 0 16px 32px -8px rgba(0, 0, 0, 0.1);
}

.skill-card-hdr {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: 0.75rem;
}

.skill-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--ortho-accent-cyan);
  background: rgba(0, 210, 255, 0.1);
  border: 1px solid rgba(0, 210, 255, 0.25);
  padding-inline: 0.6rem;
  padding-block: 0.25rem;
  border-radius: var(--radius-pill);
}

.skill-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-block-end: 0.5rem;
}

.skill-desc {
  font-size: 0.85rem;
  color: var(--ortho-text-secondary);
  line-height: 1.5;
  margin-block-end: 1rem;
}

/* Category Filter Tabs */
.cat-filter-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.cat-tab {
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-pill);
  padding: 0.45rem 1rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--ortho-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

[data-theme="light"] .cat-tab {
  background: rgba(0, 0, 0, 0.03);
  border-color: rgba(0, 0, 0, 0.08);
  color: var(--ortho-text-secondary);
}

.cat-tab:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--ortho-text-primary);
  border-color: rgba(255, 255, 255, 0.15);
}

[data-theme="light"] .cat-tab:hover {
  background: rgba(0, 0, 0, 0.06);
  color: var(--ortho-text-primary);
}

.cat-tab.active {
  background: rgba(0, 210, 255, 0.12);
  border-color: rgba(0, 210, 255, 0.45);
  color: var(--ortho-accent-cyan);
  font-weight: 600;
  box-shadow: 0 0 16px rgba(0, 210, 255, 0.2);
}

[data-theme="light"] .cat-tab.active {
  background: rgba(0, 210, 255, 0.1);
  border-color: #0099cc;
  color: #0077aa;
}

/* Playground Component Selector Buttons */
.pg-btn {
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-pill);
  padding: 0.45rem 1rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--ortho-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

[data-theme="light"] .pg-btn {
  background: rgba(0, 0, 0, 0.03);
  border-color: rgba(0, 0, 0, 0.08);
  color: var(--ortho-text-secondary);
}

.pg-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--ortho-text-primary);
  border-color: rgba(255, 255, 255, 0.15);
}

[data-theme="light"] .pg-btn:hover {
  background: rgba(0, 0, 0, 0.06);
  color: var(--ortho-text-primary);
}

.pg-btn.active {
  background: linear-gradient(135deg, rgba(31, 105, 255, 0.25) 0%, rgba(0, 210, 255, 0.2) 100%);
  border-color: rgba(0, 210, 255, 0.55);
  color: #00d2ff;
  font-weight: 700;
  box-shadow: 0 0 20px rgba(0, 210, 255, 0.25);
}

[data-theme="light"] .pg-btn.active {
  background: linear-gradient(135deg, rgba(31, 105, 255, 0.1) 0%, rgba(0, 210, 255, 0.12) 100%);
  border-color: #0099cc;
  color: #0077aa;
}

/* Quickstart CLI Section & Luxury Terminal Window */
.cli-quickstart-section {
  position: relative;
  background: transparent;
  padding-block: 4rem 4.5rem;
}

.cli-box {
  position: relative;
  max-inline-size: 760px;
  margin-inline: auto;
  background: #0d1117; /* High-integrity dark console surface */
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(0, 210, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.cli-tabs {
  display: flex;
  gap: 0.4rem;
  margin-block-end: 0;
}

.cli-tab {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-pill);
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: #c9d1d9; /* 9.2:1 AAA contrast against #0d1117 */
  cursor: pointer;
  transition: all var(--transition-fast);
}

.cli-tab:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
}

.cli-tab.active {
  background: rgba(56, 189, 248, 0.18);
  border-color: #38bdf8;
  color: #38bdf8; /* 9.0:1 AAA contrast against #0d1117 */
  font-weight: 600;
}

.cli-content {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex: 1;
  justify-content: flex-end;
  min-inline-size: 260px;
}

.cli-command-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  overflow: hidden;
}

.cli-prompt {
  color: #7ee787; /* 10.4:1 AAA contrast against #0d1117 */
  font-weight: 700;
  user-select: none;
}

.cli-command-text {
  color: #f0f6fc; /* 15.2:1 AAA contrast against #0d1117 */
  font-family: var(--font-mono);
  font-size: 0.88rem;
  letter-spacing: 0.02em;
}

.cli-copy-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: #f0f6fc; /* 15.2:1 AAA contrast */
  border-radius: var(--radius-sm);
  padding: 0.32rem 0.75rem;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.cli-copy-btn:hover {
  background: rgba(56, 189, 248, 0.22);
  border-color: #38bdf8;
  color: #38bdf8;
}

/* Section Subtitles */
.section-desc {
  max-inline-size: 720px;
  margin-inline: auto;
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--ortho-text-secondary);
  margin-block-end: 2.5rem;
}

.skill-meta-box {
  background-color: var(--ortho-surface-2);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  font-size: 0.78rem;
  color: var(--ortho-text-secondary);
  margin-block-end: 1rem;
}

.skill-meta-item {
  margin-block-end: 0.4rem;
}

.skill-meta-item:last-child {
  margin-block-end: 0;
}

.skill-meta-item strong {
  color: var(--ortho-text-primary);
}

.skill-actions-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-block-start: auto;
  padding-block-start: 1rem;
  border-block-start: 1px solid var(--ortho-border-subtle);
}

/* ==========================================================================
   PAGE 3: INTERACTIVE PLAYGROUND STYLES
   ========================================================================== */
.playground-nav {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-block-end: 0.75rem;
  margin-block-end: 1rem;
  border-block-end: 1px solid var(--ortho-border-subtle);
}

.pg-tab {
  background: none;
  border: 1px solid var(--ortho-border-subtle);
  background-color: var(--ortho-surface-1);
  color: var(--ortho-text-secondary);
  padding-inline: 1rem;
  padding-block: 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.pg-tab:hover,
.pg-tab.active {
  background-color: var(--ortho-surface-2);
  color: var(--ortho-accent-cyan);
  border-color: var(--ortho-border-active);
}

.pg-toolbar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background-color: var(--ortho-surface-1);
  border: 1px solid var(--ortho-border-subtle);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  padding: 0.75rem 1rem;
  flex-wrap: wrap;
}

.pg-toolbar-group {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.pg-toolbar-lbl {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ortho-text-muted);
  text-transform: uppercase;
}

.pg-ctrl-btn {
  background-color: var(--ortho-surface-2);
  color: var(--ortho-text-secondary);
  border: 1px solid var(--ortho-border-subtle);
  padding-inline: 0.6rem;
  padding-block: 0.3rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pg-ctrl-btn.active {
  background-color: var(--ortho-accent-cyan);
  color: #090c10;
  border-color: var(--ortho-accent-cyan);
}

.pg-render-container {
  display: grid;
  grid-template-columns: 1fr 340px;
  border: 1px solid var(--ortho-border-subtle);
  border-block-start: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  overflow: hidden;
  min-block-size: 520px;
}

.pg-viewport {
  background-color: var(--ortho-canvas);
  padding: var(--pt-padding, 1.25rem);
  overflow-y: auto;
  border-inline-end: 1px solid var(--ortho-border-subtle);
}

/* Density Modifiers inside Playground */
.pg-viewport.density-compact {
  --pt-padding: 0.65rem;
  --pt-gap: 0.5rem;
  --pt-font: 0.8rem;
  --pt-btn-pad: 0.3rem 0.6rem;
}

.pg-viewport.density-default {
  --pt-padding: 1.25rem;
  --pt-gap: 1rem;
  --pt-font: 0.9rem;
  --pt-btn-pad: 0.5rem 1rem;
}

.pg-viewport.density-comfortable {
  --pt-padding: 2rem;
  --pt-gap: 1.5rem;
  --pt-font: 1rem;
  --pt-btn-pad: 0.75rem 1.25rem;
}

.pg-meta-panel {
  background-color: var(--ortho-surface-1);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  overflow-y: auto;
}

.pg-meta-section {
  border-block-end: 1px solid var(--ortho-border-subtle);
  padding-block-end: 1rem;
}

.pg-meta-section:last-child {
  border-block-end: none;
}

.pg-meta-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--ortho-text-muted);
  margin-block-end: 0.5rem;
}

.pg-skill-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ortho-accent-cyan);
  background-color: var(--ortho-surface-2);
  padding-inline: 0.6rem;
  padding-block: 0.25rem;
  border-radius: var(--radius-sm);
  margin-block-end: 0.4rem;
}

.pg-meta-text {
  font-size: 0.8rem;
  color: var(--ortho-text-secondary);
  line-height: 1.4;
}

.tokens-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.token-chip {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background-color: rgba(2, 132, 199, 0.09);
  border: 1px solid rgba(2, 132, 199, 0.22);
  color: var(--ortho-accent-cyan);
  padding-inline: 0.5rem;
  padding-block: 0.2rem;
  border-radius: var(--radius-pill);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  transition: all var(--transition-fast);
}

.pg-prompt-code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.55;
  background-color: var(--ortho-surface-2);
  border: 1px solid var(--ortho-border-subtle);
  color: var(--ortho-text-primary);
  padding: 0.85rem;
  border-radius: var(--radius-sm);
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: anywhere;
  max-block-size: 160px;
  overflow-y: auto;
  margin-block-end: 1rem;
}

/* Playground Component Styles */
.analytics-metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--pt-gap, 1rem);
  margin-block-end: 1.5rem;
}

.metric-card {
  background-color: var(--ortho-surface-1);
  border: 1px solid var(--ortho-border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.metric-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--ortho-text-secondary);
  margin-block-end: 0.5rem;
}

.metric-val {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--ortho-text-primary);
}

.metric-chart {
  margin-block-start: 0.75rem;
}

.data-table-wrap {
  background-color: var(--ortho-surface-1);
  border: 1px solid var(--ortho-border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.table-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border-block-end: 1px solid var(--ortho-border-subtle);
  gap: 0.75rem;
  flex-wrap: wrap;
}

.dt-table {
  inline-size: 100%;
  border-collapse: collapse;
  font-size: var(--pt-font, 0.85rem);
}

.dt-table th,
.dt-table td {
  padding-inline: 1rem;
  padding-block: 0.65rem;
  text-align: start;
  border-block-end: 1px solid var(--ortho-border-subtle);
}

.dt-table th {
  background-color: var(--ortho-surface-2);
  color: var(--ortho-text-secondary);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
}

.dt-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  font-size: 0.8rem;
  color: var(--ortho-text-secondary);
}

.badge-status {
  display: inline-block;
  padding-inline: 0.5rem;
  padding-block: 0.15rem;
  border-radius: var(--radius-pill);
  font-size: 0.7rem;
  font-weight: 600;
}

.badge-success { background-color: var(--ortho-success-bg); color: var(--ortho-success); }
.badge-warning { background-color: var(--ortho-warning-bg); color: var(--ortho-warning); }
.badge-danger { background-color: var(--ortho-danger-bg); color: var(--ortho-danger); }

/* ==========================================================================
   PAGE 4: SKILL BUILDER STYLES
   ========================================================================== */
.builder-split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}

.builder-form-panel {
  background-color: var(--ortho-surface-1);
  border: 1px solid var(--ortho-border-subtle);
  border-radius: var(--radius-md);
  padding: 1.75rem;
}

.form-group {
  margin-block-end: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ortho-text-primary);
  margin-block-end: 0.4rem;
}

.required-star {
  color: var(--ortho-accent-cyan);
}

.form-input,
.form-textarea,
.form-select {
  inline-size: 100%;
  background-color: var(--ortho-surface-2);
  border: 1px solid var(--ortho-border-medium);
  color: var(--ortho-text-primary);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.75rem;
  font-family: inherit;
  font-size: 0.85rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--ortho-accent-cyan);
}

.form-help {
  display: block;
  font-size: 0.72rem;
  color: var(--ortho-text-muted);
  margin-block-start: 0.25rem;
}

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  background-color: var(--ortho-surface-2);
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--ortho-border-subtle);
}

.checkbox-lbl {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--ortho-text-secondary);
  cursor: pointer;
}

.builder-actions {
  display: flex;
  gap: 0.75rem;
  margin-block-start: 1.5rem;
  flex-wrap: wrap;
}

.builder-preview-panel {
  background-color: var(--ortho-surface-1);
  border: 1px solid var(--ortho-border-subtle);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  position: sticky;
  inset-block-start: 80px;
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: 1rem;
}

.preview-title {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--ortho-text-muted);
}

.preview-badge {
  font-size: 0.72rem;
  padding-inline: 0.6rem;
  padding-block: 0.15rem;
  border-radius: var(--radius-pill);
  background-color: var(--ortho-success-bg);
  color: var(--ortho-success);
  font-weight: 600;
}

.preview-markdown-area {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.5;
  background-color: #06090e;
  border: 1px solid var(--ortho-border-medium);
  border-radius: var(--radius-sm);
  padding: 1rem;
  color: #38bdf8;
  max-block-size: 480px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.preview-instructions {
  margin-block-start: 1rem;
  font-size: 0.75rem;
  color: var(--ortho-text-muted);
  line-height: 1.4;
}

/* ==========================================================================
   PAGE 5: EXAMPLES GALLERY STYLES
   ========================================================================== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 1.5rem;
}

.gallery-card {
  background-color: var(--ortho-surface-1);
  border: 1px solid var(--ortho-border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.gallery-filter-btn.active {
  background-color: var(--ortho-accent-cyan);
  color: #040810;
  border-color: var(--ortho-accent-cyan);
  font-weight: 700;
}

[data-theme="light"] .gallery-filter-btn.active {
  background-color: var(--ortho-accent-cyan);
  color: #ffffff;
}

.gallery-card-thumb {
  position: relative;
  block-size: 190px;
  background-color: var(--ortho-surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  border-block-end: 1px solid var(--ortho-border-subtle);
  overflow: hidden;
}

.gallery-card-img {
  inline-size: 100%;
  block-size: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
  aspect-ratio: 2 / 1;
  transition: transform var(--transition-fast, 0.2s ease);
}

.gallery-card:hover .gallery-card-img {
  transform: scale(1.04);
}

.gallery-card-body {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.gallery-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-block-end: 0.4rem;
}

.gallery-card-desc {
  font-size: 0.82rem;
  color: var(--ortho-text-secondary);
  margin-block-end: 1rem;
}

.gallery-controls-bar {
  margin-block-end: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.gallery-cluster-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.gallery-search-wrap {
  display: flex;
  gap: 1rem;
  max-inline-size: 600px;
  margin-inline: auto;
  inline-size: 100%;
}

.gallery-search-input {
  flex: 1;
  padding-inline: 1rem;
  padding-block: 0.65rem;
  background-color: var(--ortho-surface-1);
  border: 1px solid var(--ortho-border-medium);
  border-radius: var(--radius-sm);
  color: var(--ortho-text-primary);
}

.gallery-count-badge {
  align-self: center;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ortho-accent-cyan);
  white-space: nowrap;
}

.gallery-thumb-overlay {
  position: absolute;
  inset-block-start: 0.65rem;
  inset-inline: 0.65rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  pointer-events: none;
  z-index: 2;
}

.gallery-thumb-tags {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.gallery-cluster-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  padding-inline: 0.45rem;
  padding-block: 0.2rem;
  border-radius: var(--radius-sm);
  background: rgba(9, 13, 22, 0.85);
  color: var(--ortho-accent-cyan);
  border: 1px solid rgba(0, 210, 255, 0.25);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  white-space: nowrap;
}

[data-theme="light"] .gallery-cluster-badge {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(2, 132, 199, 0.25);
  color: var(--ortho-accent-cyan);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.gallery-theme-badge {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  padding-inline: 0.4rem;
  padding-block: 0.15rem;
  border-radius: var(--radius-sm);
  background: rgba(15, 23, 42, 0.85);
  color: #94a3b8;
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  text-transform: uppercase;
  white-space: nowrap;
}

[data-theme="light"] .gallery-theme-badge {
  background: rgba(241, 245, 249, 0.9);
  color: #334155;
  border-color: rgba(0, 0, 0, 0.1);
}

.gallery-style-badge {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  padding-inline: 0.4rem;
  padding-block: 0.15rem;
  border-radius: var(--radius-sm);
  background: rgba(31, 105, 255, 0.15);
  color: #60a5fa;
  border: 1px solid rgba(31, 105, 255, 0.3);
  backdrop-filter: blur(8px);
  white-space: nowrap;
  max-inline-size: 130px;
  overflow: hidden;
  text-overflow: ellipsis;
}

[data-theme="light"] .gallery-style-badge {
  background: rgba(31, 105, 255, 0.1);
  color: #1d4ed8;
  border-color: rgba(31, 105, 255, 0.25);
}

.gallery-open-btn .btn-arrow-circle {
  inline-size: 20px;
  block-size: 20px;
  background: rgba(0, 210, 255, 0.1);
}

.gallery-open-btn:hover .btn-arrow-circle {
  background: rgba(0, 210, 255, 0.25);
  transform: translate(2px, -2px);
}

[dir="rtl"] .gallery-open-btn:hover .btn-arrow-circle {
  transform: translate(-2px, -2px);
}

.gallery-card-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-block-start: auto;
}

.gallery-open-btn {
  text-decoration: none;
  flex: 1;
  text-align: center;
  justify-content: center;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.gallery-interactive-btn {
  text-decoration: none;
  font-size: 0.8rem;
}

/* ==========================================================================
   PAGE 6: QUALITY GATES SPEC STYLES
   ========================================================================== */
.gates-spec-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 1.5rem;
  margin-block-end: 3.5rem;
}

.gate-spec-card {
  background-color: var(--ortho-surface-1);
  border: 1px solid var(--ortho-border-subtle);
  border-radius: var(--radius-md);
  padding: 1.75rem;
}

.gate-spec-hdr {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-block-end: 0.75rem;
}

.gate-num-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--ortho-accent-cyan);
  background-color: var(--ortho-surface-2);
  padding-inline: 0.5rem;
  padding-block: 0.2rem;
  border-radius: var(--radius-pill);
}

.gate-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-block-end: 0.75rem;
}

.meta-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  background-color: var(--ortho-surface-2);
  color: var(--ortho-text-secondary);
  padding-inline: 0.5rem;
  padding-block: 0.2rem;
  border-radius: 4px;
}

.gate-desc-text {
  font-size: 0.85rem;
  color: var(--ortho-text-secondary);
  margin-block-end: 1rem;
  line-height: 1.5;
}

.gate-boundary-box {
  background-color: var(--ortho-surface-2);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  font-size: 0.78rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.simulator-wrapper {
  background-color: var(--ortho-surface-1);
  border: 1px solid var(--ortho-border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem;
}

.simulator-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-block-end: 1.5rem;
  flex-wrap: wrap;
}

.sim-editor-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.editor-textarea {
  inline-size: 100%;
  background-color: #06090e;
  border: 1px solid var(--ortho-border-medium);
  border-radius: var(--radius-sm);
  color: #f8fafc;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 1rem;
  outline: none;
  resize: vertical;
}

.gate-terminal-box {
  background-color: #06090e;
  border: 1px solid var(--ortho-border-medium);
  border-radius: var(--radius-sm);
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  min-block-size: 260px;
  max-block-size: 260px;
  overflow-y: auto;
  line-height: 1.5;
}

.gate-terminal-box .term-brand { color: var(--ortho-accent-cyan, #38bdf8); }
.gate-terminal-box .term-success { color: var(--ortho-success, #10b981); }
.gate-terminal-box .term-danger { color: var(--ortho-danger, #ef4444); }
.gate-terminal-box .term-muted { color: var(--ortho-text-secondary, #94a3b8); }

/* ==========================================================================
   PAGE 7: INSTALLATION STYLES
   ========================================================================== */
.install-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 1.5rem;
}

.install-card {
  background-color: var(--ortho-surface-1);
  border: 1px solid var(--ortho-border-subtle);
  border-radius: var(--radius-md);
  padding: 1.75rem;
}

.install-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-block-end: 0.5rem;
}

.install-card-desc {
  font-size: 0.82rem;
  color: var(--ortho-text-secondary);
  margin-block-end: 1rem;
}

.terminal-command-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: #06090e;
  border: 1px solid var(--ortho-border-medium);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: #38bdf8;
}

.btn-copy-sm {
  background-color: var(--ortho-surface-2);
  color: var(--ortho-text-primary);
  border: 1px solid var(--ortho-border-subtle);
  border-radius: 4px;
  padding-inline: 0.5rem;
  padding-block: 0.2rem;
  font-size: 0.7rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-copy-sm:hover {
  background-color: var(--ortho-accent-cyan);
  color: #090c10;
}

.troubleshoot-list {
  list-style: none;
  font-size: 0.82rem;
  color: var(--ortho-text-secondary);
}

.troubleshoot-list li {
  margin-block-end: 0.5rem;
  padding-inline-start: 1rem;
  position: relative;
}

.troubleshoot-list li::before {
  content: "•";
  position: absolute;
  inset-inline-start: 0;
  color: var(--ortho-accent-cyan);
}

/* Site Footer */
.site-footer {
  margin-block-start: auto;
  background-color: var(--ortho-surface-1);
  border-block-start: 1px solid var(--ortho-border-subtle);
  padding-block: 2.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--ortho-text-secondary);
}

.footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-block-end: 1rem;
  flex-wrap: wrap;
}

.footer-link {
  color: var(--ortho-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--ortho-accent-cyan);
}

/* Modal Dialog */
.docs-modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(9, 12, 16, 0.75);
  backdrop-filter: blur(6px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.docs-modal-panel {
  background-color: var(--ortho-surface-1);
  border: 1px solid var(--ortho-border-medium);
  border-radius: var(--radius-md);
  inline-size: 100%;
  max-inline-size: 460px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.docs-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-block-end: 1px solid var(--ortho-border-subtle);
}

.docs-modal-title {
  font-size: 1.05rem;
  font-weight: 700;
}

.docs-modal-body {
  padding: 1.25rem;
  font-size: 0.85rem;
  color: var(--ortho-text-secondary);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.docs-modal-input {
  inline-size: 100%;
  background-color: rgba(13, 19, 33, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--ortho-text-primary);
  border-radius: 10px;
  padding-inline: 0.85rem;
  padding-block: 0.65rem;
  font-family: inherit;
  font-size: 0.85rem;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.25);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.docs-modal-input:focus {
  outline: none;
  border-color: var(--ortho-accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 210, 255, 0.15), inset 0 1px 2px rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .docs-modal-input {
  background-color: rgba(255, 255, 255, 0.9);
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .docs-modal-input:focus {
  border-color: var(--ortho-accent-cyan);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

/* ==========================================================================
   Skill Builder Layout & Interactive Cards
   ========================================================================== */
.builder-split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 960px) {
  .builder-split-layout {
    grid-template-columns: 1fr;
  }
}

.builder-form-card {
  padding-inline: 1.75rem;
  padding-block: 1.75rem;
}

.builder-card-hdr {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: 1.25rem;
  padding-block-end: 0.75rem;
  border-block-end: 1px solid var(--ortho-border-subtle);
}

.builder-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ortho-text-primary);
  letter-spacing: -0.01em;
}

.builder-field-group {
  margin-block-end: 1.1rem;
}

.builder-field-lbl {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ortho-text-secondary);
  margin-block-end: 0.35rem;
  letter-spacing: 0.01em;
}

.builder-section-subhdr {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ortho-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-block-end: 0.6rem;
  margin-block-start: 1.25rem;
}

.builder-check-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.6rem;
  margin-block-end: 1.25rem;
}

.builder-check-card {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-inline: 0.75rem;
  padding-block: 0.55rem;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.02);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--ortho-text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.builder-check-card:hover {
  border-color: rgba(0, 210, 255, 0.35);
  background: rgba(0, 210, 255, 0.04);
}

.builder-check-card input[type="checkbox"] {
  accent-color: var(--ortho-accent-cyan);
  cursor: pointer;
  inline-size: 15px;
  block-size: 15px;
}

[data-theme="light"] .builder-check-card {
  border-color: rgba(0, 0, 0, 0.08);
  background: rgba(0, 0, 0, 0.02);
}

[data-theme="light"] .builder-check-card:hover {
  border-color: rgba(2, 132, 199, 0.35);
  background: rgba(2, 132, 199, 0.04);
}

.builder-btn-group {
  display: flex;
  gap: 0.65rem;
  margin-block-start: 1.5rem;
  flex-wrap: wrap;
}

.builder-btn-group button {
  flex: 1 1 120px;
  justify-content: center;
}

/* Terminal Live Preview Card */
.builder-preview-card {
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.builder-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: 1.25rem;
  padding-block: 0.85rem;
  background-color: rgba(22, 32, 53, 0.85);
  border-block-end: 1px solid rgba(255, 255, 255, 0.08);
}

[data-theme="light"] .builder-preview-header {
  background-color: rgba(241, 245, 249, 0.95);
  border-block-end: 1px solid rgba(0, 0, 0, 0.08);
}

.terminal-dots {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.dot {
  inline-size: 10px;
  block-size: 10px;
  border-radius: 50%;
  display: inline-block;
}

.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27c93f; }

.preview-filename {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ortho-text-secondary);
}

.builder-code-body {
  padding-inline: 1.25rem;
  padding-block: 1.25rem;
  max-block-size: 640px;
  overflow-y: auto;
  background-color: #080c14;
}

[data-theme="light"] .builder-code-body {
  background-color: #f1f5f9;
}

.builder-pre {
  margin-block: 0;
  margin-inline: 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.6;
  color: #cbd5e1;
}

[data-theme="light"] .builder-pre {
  color: #1e293b;
}

/* Page View Universal Ambient Glow */
.page-view .section-pad {
  position: relative;
}

.page-view .section-pad::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  margin-inline: auto;
  inset-block-start: -30px;
  inline-size: 85%;
  max-inline-size: 1100px;
  block-size: 260px;
  background: radial-gradient(ellipse 70% 50% at 50% 0%, rgba(0, 210, 255, 0.07), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

[data-theme="light"] .page-view .section-pad::before {
  background: radial-gradient(ellipse 70% 50% at 50% 0%, rgba(2, 132, 199, 0.05), transparent 70%);
}

.page-view .container {
  position: relative;
  z-index: 1;
}

.docs-modal-error {
  background-color: var(--ortho-danger-bg);
  color: var(--ortho-danger);
  border: 1px solid var(--ortho-danger);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  font-size: 0.78rem;
}

.docs-modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.5rem;
  padding: 1rem 1.25rem;
  border-block-start: 1px solid var(--ortho-border-subtle);
  background-color: var(--ortho-surface-2);
}

.btn-spinner {
  display: inline-block;
  inline-size: 12px;
  block-size: 12px;
  border: 2px solid rgba(0, 0, 0, 0.2);
  border-block-start-color: #090c10;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ==========================================================================
   Autonomous Pipeline Connected Grid
   ========================================================================== */
.pipeline-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  position: relative;
}

.pipeline-card {
  position: relative;
  background: rgba(13, 19, 33, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding-inline: 1.5rem;
  padding-block: 1.6rem;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5), inset 0 1px 1px rgba(255, 255, 255, 0.06);
  transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

[data-theme="light"] .pipeline-card {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(0, 0, 0, 0.08);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05);
}

.pipeline-card:hover {
  border-color: rgba(0, 210, 255, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.7), 0 0 25px rgba(0, 210, 255, 0.12);
}

[data-theme="light"] .pipeline-card:hover {
  border-color: rgba(2, 132, 199, 0.4);
  box-shadow: 0 16px 32px -8px rgba(0, 0, 0, 0.1);
}

.pipeline-card-active {
  border-color: rgba(0, 210, 255, 0.35);
  background: linear-gradient(180deg, rgba(0, 210, 255, 0.08) 0%, rgba(13, 19, 33, 0.8) 100%);
}

[data-theme="light"] .pipeline-card-active {
  background: linear-gradient(180deg, rgba(2, 132, 199, 0.06) 0%, rgba(255, 255, 255, 0.95) 100%);
  border-color: rgba(2, 132, 199, 0.35);
}

.pipeline-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: 1rem;
}

.pipeline-stage-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ortho-accent-cyan);
  letter-spacing: 0.05em;
}

.pipeline-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ortho-text-primary);
  margin-block-end: 0.6rem;
  letter-spacing: -0.01em;
}

.pipeline-card-desc {
  font-size: 0.85rem;
  color: var(--ortho-text-secondary);
  line-height: 1.55;
  flex-grow: 1;
}

.pipeline-step-arrow {
  display: none;
}

@media (min-width: 1024px) {
  .pipeline-step-arrow {
    display: block;
    position: absolute;
    inset-inline-end: -1.1rem;
    inset-block-start: 50%;
    transform: translateY(-50%);
    color: rgba(0, 210, 255, 0.4);
    font-size: 1.2rem;
    font-weight: 700;
    pointer-events: none;
    z-index: 2;
  }
  
  [dir="rtl"] .pipeline-step-arrow {
    transform: translateY(-50%) scaleX(-1);
  }
}

/* ==========================================================================
   Competitor Comparison Matrix (Linear / Vercel Grade)
   ========================================================================== */
.teardown-section {
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 210, 255, 0.08), transparent 70%), var(--ortho-surface-1);
  border-block-start: 1px solid var(--ortho-border-subtle);
  border-block-end: 1px solid var(--ortho-border-subtle);
}

[data-theme="light"] .teardown-section {
  background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(2, 132, 199, 0.05), transparent 70%), var(--ortho-surface-1);
}

.table-wrap {
  inline-size: 100%;
  max-inline-size: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  background: rgba(15, 22, 38, 0.85);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}

[data-theme="light"] .table-wrap {
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.07), inset 0 1px 0 rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.9);
}

.comp-table {
  inline-size: 100%;
  min-inline-size: 820px;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.85rem;
  text-align: start;
}

.comp-table th,
.comp-table td {
  padding-inline: 1.25rem;
  padding-block: 1.15rem;
  border-block-end: 1px solid var(--ortho-border-subtle);
  vertical-align: top;
}

.comp-table th {
  background-color: rgba(22, 32, 53, 0.75);
  font-weight: 600;
  color: var(--ortho-text-primary);
  border-block-end: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .comp-table th {
  background-color: rgba(241, 245, 249, 0.9);
  border-block-end: 1px solid rgba(0, 0, 0, 0.08);
}

.comp-table tbody tr {
  transition: background-color var(--transition-fast);
}

.comp-table tbody tr:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

[data-theme="light"] .comp-table tbody tr:hover {
  background-color: rgba(0, 0, 0, 0.015);
}

.comp-table tbody tr:last-child td {
  border-block-end: none;
}

/* Table Columns */
.col-criterion {
  inline-size: 24%;
  min-inline-size: 200px;
}

.crit-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--ortho-text-primary);
  margin-block-end: 0.25rem;
}

.crit-desc {
  font-size: 0.76rem;
  color: var(--ortho-text-muted);
  line-height: 1.4;
}

.col-competitor {
  inline-size: 19%;
  min-inline-size: 160px;
}

.th-badge-group {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.th-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ortho-text-primary);
}

.th-sub {
  font-size: 0.74rem;
  font-weight: 400;
  color: var(--ortho-text-secondary);
}

.cell-status {
  margin-block-end: 0.4rem;
}

.cell-sub {
  font-size: 0.78rem;
  color: var(--ortho-text-secondary);
  line-height: 1.45;
}

.cell-sub code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding-inline: 0.3rem;
  padding-block: 0.1rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06);
  color: var(--ortho-text-primary);
}

[data-theme="light"] .cell-sub code {
  background: rgba(0, 0, 0, 0.06);
}

/* Elevated Orthotect Standard Column */
.comp-table .col-ortho {
  inline-size: 25%;
  min-inline-size: 220px;
  background: linear-gradient(180deg, rgba(0, 210, 255, 0.08) 0%, rgba(31, 105, 255, 0.03) 100%);
  border-inline: 1px solid rgba(0, 210, 255, 0.25);
  position: relative;
}

[data-theme="light"] .comp-table .col-ortho {
  background: linear-gradient(180deg, rgba(2, 132, 199, 0.07) 0%, rgba(31, 105, 255, 0.02) 100%);
  border-inline: 1px solid rgba(2, 132, 199, 0.25);
}

.comp-table th.col-ortho {
  background: linear-gradient(180deg, rgba(0, 210, 255, 0.16) 0%, rgba(22, 32, 53, 0.95) 100%);
  border-block-end: 1px solid rgba(0, 210, 255, 0.3);
  padding-block-start: 1.25rem;
}

[data-theme="light"] .comp-table th.col-ortho {
  background: linear-gradient(180deg, rgba(2, 132, 199, 0.12) 0%, rgba(241, 245, 249, 0.95) 100%);
  border-block-end: 1px solid rgba(2, 132, 199, 0.3);
}

.ortho-th-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ortho-accent-cyan);
  background: rgba(0, 210, 255, 0.14);
  border: 1px solid rgba(0, 210, 255, 0.35);
  padding-inline: 0.55rem;
  padding-block: 0.2rem;
  border-radius: var(--radius-pill);
  margin-block-end: 0.45rem;
}

.ortho-star {
  font-size: 0.75rem;
  color: var(--ortho-accent-cyan);
}

.th-title-ortho {
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--ortho-accent-cyan);
  letter-spacing: -0.01em;
}

.th-sub-ortho {
  font-size: 0.74rem;
  color: var(--ortho-text-secondary);
}

.cell-sub-win {
  font-size: 0.8rem;
  color: #cbd5e1;
  line-height: 1.45;
  font-weight: 500;
}

[data-theme="light"] .cell-sub-win {
  color: #334155;
}

/* Status Pill Badges */
.pill-ortho-win,
.pill-subtle-fail,
.pill-subtle-warn,
.pill-subtle-win {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  font-weight: 700;
  padding-inline: 0.65rem;
  padding-block: 0.25rem;
  border-radius: var(--radius-pill);
  line-height: 1.2;
}

.pill-ortho-win {
  background: rgba(0, 210, 255, 0.16);
  border: 1px solid rgba(0, 210, 255, 0.4);
  color: #38bdf8;
  box-shadow: 0 0 12px rgba(0, 210, 255, 0.15);
}

[data-theme="light"] .pill-ortho-win {
  background: rgba(2, 132, 199, 0.12);
  border-color: rgba(2, 132, 199, 0.35);
  color: #0369a1;
  box-shadow: none;
}

.pill-subtle-fail {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.25);
  color: #f87171;
}

[data-theme="light"] .pill-subtle-fail {
  background: rgba(220, 38, 38, 0.08);
  border-color: rgba(220, 38, 38, 0.2);
  color: #b91c1c;
}

.pill-subtle-warn {
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.25);
  color: #fbbf24;
}

[data-theme="light"] .pill-subtle-warn {
  background: rgba(217, 119, 6, 0.08);
  border-color: rgba(217, 119, 6, 0.2);
  color: #b45309;
}

.pill-subtle-win {
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: #34d399;
}

[data-theme="light"] .pill-subtle-win {
  background: rgba(5, 150, 105, 0.08);
  border-color: rgba(5, 150, 105, 0.2);
  color: #047857;
}

.pill-icon {
  font-size: 0.75rem;
  font-weight: 900;
}

/* Responsive Breakpoints */
@media (max-width: 1180px) {
  .nav-links {
    gap: 0.05rem;
  }
  .nav-link {
    padding: 0.35rem 0.55rem;
    font-size: 0.78rem;
  }
  .brand-badge {
    display: none;
  }
  .github-btn span {
    display: none;
  }
  .nav-wrap {
    gap: 0.5rem;
  }
  .control-group {
    gap: 0.4rem;
  }
  .btn-ctrl {
    padding-inline: 0.6rem;
  }
}

@media (max-width: 960px) {
  .desktop-nav {
    display: none !important;
  }
  .mobile-menu-toggle,
  .btn-ctrl.mobile-menu-toggle {
    display: inline-flex !important;
  }
  .pg-render-container {
    grid-template-columns: 1fr;
  }
  .builder-split-layout {
    grid-template-columns: 1fr;
  }
  .sim-editor-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .brand-badge {
    display: none;
  }
  .brand-logo-img {
    max-inline-size: 118px;
    block-size: 28px;
  }
  .nav-wrap {
    padding-inline: 0.5rem;
    gap: 0.5rem;
  }
  .control-group {
    gap: 0.3rem;
  }
  .github-btn span {
    display: none;
  }
  .btn-ctrl {
    padding-inline: 0.5rem;
    padding-block: 0.35rem;
    font-size: 0.75rem;
  }
}