/* ============================================================
   BLACK BOX ANIMATOR — Documentation Design System
   poqpoq.com/animator/docs/
   ============================================================ */

/* --- Design Tokens --- */
:root {
  /* Backgrounds */
  --bg-body: #0a0a0a;
  --bg-primary: #111111;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2a2a2a;
  --bg-hover: #333333;
  --bg-elevated: #353535;

  /* Text */
  --text-primary: #e0e0e0;
  --text-heading: #ffffff;
  --text-muted: #999999;
  --text-dim: #666666;

  /* Accents */
  --accent-magenta: #ff00ff;
  --accent-magenta-dim: #cc00cc;
  --accent-magenta-glow: rgba(255, 0, 255, 0.3);
  --accent-blue: #0066cc;
  --accent-blue-hover: #0077ee;
  --accent-info: #0099ff;
  --accent-cyan: #00ffff;

  /* Semantic */
  --color-success: #4caf50;
  --color-warning: #ff9800;
  --color-error: #f44336;

  /* Borders */
  --border-subtle: #222222;
  --border-medium: #333333;
  --border-strong: #444444;

  /* Fonts */
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-heading: 'Montserrat', sans-serif;
  --font-mono: 'Space Mono', 'Consolas', 'Monaco', 'Courier New', monospace;

  /* Layout */
  --sidebar-width: 260px;
  --header-height: 60px;
  --content-max-width: 900px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
}

/* --- Reset & Base --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-primary);
  background: var(--bg-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent-info);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-cyan);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--text-heading);
  line-height: 1.3;
}

h1 {
  font-weight: 900;
  font-size: 2.5rem;
  text-transform: uppercase;
  letter-spacing: -0.02em;
}

h1 .accent {
  color: var(--accent-magenta);
  text-shadow: 0 0 20px var(--accent-magenta-glow);
}

h2 {
  font-weight: 900;
  font-size: 1.6rem;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  padding-bottom: 0.5rem;
  margin-top: 3rem;
  margin-bottom: 1.25rem;
  border-bottom: 2px solid var(--border-medium);
}

h3 {
  font-weight: 700;
  font-size: 1.2rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

h4 {
  font-weight: 600;
  font-size: 1.05rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1rem;
}

ul, ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.4rem;
}

strong {
  color: var(--text-heading);
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--bg-tertiary);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  color: var(--accent-magenta);
}

pre {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  overflow-x: auto;
}

pre code {
  background: none;
  padding: 0;
  color: var(--text-primary);
}

blockquote {
  border-left: 3px solid var(--accent-magenta);
  padding: 0.5rem 1rem;
  margin: 1rem 0;
  background: var(--bg-secondary);
  border-radius: 0 6px 6px 0;
  color: var(--text-muted);
  font-style: italic;
}

hr {
  border: none;
  border-top: 1px solid var(--border-medium);
  margin: 2rem 0;
}

/* --- Site Header --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-medium);
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  z-index: 1000;
  gap: 1rem;
}

.site-header .logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  flex-shrink: 0;
}

.site-header .logo-link img {
  width: 32px;
  height: 32px;
}

.site-header .logo-text {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  color: var(--text-heading);
  white-space: nowrap;
}

.site-header .logo-text .docs-label {
  color: var(--accent-magenta);
  margin-left: 0.4rem;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
}

.header-nav a {
  color: var(--text-muted);
  font-size: 0.875rem;
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  transition: all var(--transition-fast);
}

.header-nav a:hover {
  color: var(--text-heading);
  background: var(--bg-hover);
}

.header-nav .launch-btn {
  background: var(--accent-blue);
  color: white !important;
  font-weight: 600;
  padding: 0.4rem 1rem;
  border-radius: 6px;
  margin-left: 0.5rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.header-nav .launch-btn:hover {
  background: var(--accent-blue-hover);
}

.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.25rem;
}

/* --- Page Layout (sidebar + content) --- */
.page-layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  min-height: 100vh;
  padding-top: var(--header-height);
}

/* --- Sidebar --- */
.sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--bg-primary);
  border-right: 1px solid var(--border-subtle);
  overflow-y: auto;
  padding: 1.5rem 0;
  z-index: 900;
}

.sidebar-group {
  margin-bottom: 1.5rem;
}

.sidebar-group-label {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  padding: 0 1.25rem;
  margin-bottom: 0.4rem;
}

.sidebar a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1.25rem;
  color: var(--text-muted);
  font-size: 0.875rem;
  border-left: 3px solid transparent;
  transition: all var(--transition-fast);
}

.sidebar a:hover {
  color: var(--text-heading);
  background: var(--bg-secondary);
}

.sidebar a.active {
  color: var(--text-heading);
  background: rgba(255, 0, 255, 0.05);
  border-left-color: var(--accent-magenta);
  font-weight: 600;
}

.sidebar a .nav-icon {
  font-size: 1rem;
  width: 1.25rem;
  text-align: center;
  flex-shrink: 0;
}

.sidebar a .star-badge {
  margin-left: auto;
  font-size: 0.7rem;
  background: var(--accent-magenta);
  color: white;
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --- Content Area --- */
.content-area {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 2.5rem 2rem 4rem;
  width: 100%;
}

.content-area > *:first-child {
  margin-top: 0;
}

/* --- Full-Width Layout (landing page, no sidebar) --- */
.full-width-layout {
  padding-top: var(--header-height);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 2rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.3;
  filter: blur(2px);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,10,10,0.6) 0%, rgba(10,10,10,0.95) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 0.75rem;
}

.hero .tagline {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-normal);
  font-family: var(--font-body);
}

.btn-primary {
  background: var(--accent-magenta);
  color: white;
  box-shadow: 0 0 20px var(--accent-magenta-glow);
}

.btn-primary:hover {
  background: var(--accent-magenta-dim);
  color: white;
  box-shadow: 0 0 30px rgba(255, 0, 255, 0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-heading);
  border: 1px solid var(--border-strong);
}

.btn-secondary:hover {
  background: var(--bg-hover);
  color: white;
  border-color: var(--accent-magenta);
  transform: translateY(-1px);
}

/* --- Feature Cards --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.feature-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-left: 4px solid var(--accent-magenta);
  border-radius: 0 10px 10px 0;
  padding: 1.75rem;
  transition: all var(--transition-normal);
}

.feature-card:hover {
  border-color: var(--accent-magenta);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.feature-card .card-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.feature-card .card-icon img {
  width: 36px;
  height: 36px;
  opacity: 0.85;
  filter: brightness(1.1);
}

.feature-card h3 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1rem;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  margin-top: 0;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.feature-card .card-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-magenta);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.feature-card .card-link:hover {
  color: var(--accent-cyan);
}

/* --- Callout Boxes --- */
.callout {
  border-radius: 0 8px 8px 0;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  border-left: 4px solid;
  background: var(--bg-secondary);
}

.callout-title {
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.callout p:last-child {
  margin-bottom: 0;
}

.callout-tip {
  border-left-color: var(--color-success);
}

.callout-tip .callout-title {
  color: var(--color-success);
}

.callout-warning {
  border-left-color: var(--color-warning);
}

.callout-warning .callout-title {
  color: var(--color-warning);
}

.callout-info {
  border-left-color: var(--accent-info);
}

.callout-info .callout-title {
  color: var(--accent-info);
}

.callout-danger {
  border-left-color: var(--color-error);
}

.callout-danger .callout-title {
  color: var(--color-error);
}

/* --- Keyboard Keys --- */
kbd {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8em;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 0.1em 0.45em;
  color: var(--accent-magenta);
  white-space: nowrap;
  vertical-align: baseline;
}

/* --- Step Lists --- */
.steps {
  counter-reset: step-counter;
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
}

.steps li {
  counter-increment: step-counter;
  position: relative;
  padding-left: 3.5rem;
  margin-bottom: 1.75rem;
  min-height: 2.25rem;
}

.steps li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 0;
  width: 2.25rem;
  height: 2.25rem;
  background: var(--accent-magenta);
  color: white;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.steps li strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 0.25rem;
}

/* --- Tables --- */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}

th {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-magenta);
  background: var(--bg-tertiary);
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 2px solid var(--border-medium);
}

td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

tr:hover td {
  background: var(--bg-secondary);
}

/* --- Screenshots --- */
.screenshot-frame {
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: 10px;
  overflow: hidden;
  margin: 1.5rem 0;
  transition: border-color var(--transition-normal);
}

.screenshot-frame:hover {
  border-color: var(--border-strong);
}

.screenshot-frame img {
  width: 100%;
  display: block;
}

.screenshot-caption {
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
}

.screenshot-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0;
}

/* --- Image Placeholder --- */
.image-placeholder {
  border: 2px dashed var(--border-medium);
  border-radius: 10px;
  background: var(--bg-secondary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  margin: 1.5rem 0;
  text-align: center;
  gap: 0.5rem;
  min-height: 200px;
}

.image-placeholder .placeholder-icon {
  font-size: 2.5rem;
  opacity: 0.3;
}

.image-placeholder .placeholder-label {
  color: var(--text-dim);
  font-size: 0.85rem;
}

.image-placeholder .placeholder-size {
  color: var(--text-dim);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  opacity: 0.5;
}

/* --- Video Embed --- */
.video-frame {
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: 10px;
  overflow: hidden;
  margin: 1.5rem 0;
  transition: border-color var(--transition-normal);
}

.video-frame:hover {
  border-color: var(--border-strong);
}

.video-frame video {
  width: 100%;
  display: block;
}

.video-frame .video-caption {
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
}

.video-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0;
}

/* --- Platform Badges --- */
.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  white-space: nowrap;
}

.badge-mixamo { background: #1a73e8; color: white; }
.badge-vrm { background: #9b59b6; color: white; }
.badge-meshy { background: #27ae60; color: white; }
.badge-tripoai { background: #e67e22; color: white; }
.badge-cc { background: #c0392b; color: white; }
.badge-rpm { background: #2ecc71; color: white; }
.badge-bvh { background: #7f8c8d; color: white; }
.badge-glb { background: var(--accent-info); color: white; }

/* --- Quick Start Section --- */
.quick-start {
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: 12px;
  padding: 2.5rem;
  margin: 3rem auto;
  max-width: 850px;
}

.quick-start h2 {
  text-align: center;
  border-bottom: none;
  margin-top: 0;
}

/* --- Ecosystem Banner --- */
.ecosystem-banner {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
  border-top: 1px solid var(--border-medium);
  padding: 3rem 2rem;
  text-align: center;
}

.ecosystem-banner h2 {
  border-bottom: none;
  margin-top: 0;
}

.ecosystem-grid {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.ecosystem-item {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.ecosystem-item a {
  display: block;
  font-weight: 600;
}

/* --- Toolkit Grid (landing page) --- */
.toolkit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.toolkit-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: 8px;
  padding: 1.25rem;
  text-decoration: none;
  transition: all var(--transition-normal);
  display: block;
}

.toolkit-item:hover {
  border-color: var(--accent-magenta);
  transform: translateY(-2px);
}

.toolkit-item .toolkit-icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.toolkit-item .toolkit-label {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-heading);
}

.toolkit-item .toolkit-desc {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

/* --- Section Container (landing page) --- */
.section {
  padding: 3rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

/* --- Site Footer --- */
.site-footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-subtle);
  padding: 2rem;
  text-align: center;
}

.site-footer .footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.site-footer .footer-brand img {
  width: 24px;
  height: 24px;
}

.site-footer .footer-brand span {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--text-muted);
}

.site-footer .footer-links {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  margin-bottom: 0.75rem;
}

.site-footer .footer-links a {
  color: var(--text-dim);
  font-size: 0.8rem;
}

.site-footer .footer-links a:hover {
  color: var(--accent-magenta);
}

.site-footer .footer-copy {
  color: var(--text-dim);
  font-size: 0.75rem;
}

/* --- Page Header (per-page hero, lighter than landing hero) --- */
.page-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-medium);
  padding: 2rem 0 1.5rem;
  margin-bottom: 2rem;
}

.page-header h1 {
  font-size: 2rem;
  margin-bottom: 0.25rem;
}

.page-header .page-subtitle {
  color: var(--text-muted);
  font-size: 1rem;
}

/* --- Breadcrumb --- */
.breadcrumb {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
}

.breadcrumb a {
  color: var(--text-dim);
}

.breadcrumb a:hover {
  color: var(--accent-info);
}

.breadcrumb .separator {
  margin: 0 0.4rem;
  opacity: 0.5;
}

/* --- Shortcut Grid (shortcuts page) --- */
.shortcut-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 1.5rem 0;
}

.shortcut-group {
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: 10px;
  padding: 1.5rem;
}

.shortcut-group h3 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-magenta);
  margin-top: 0;
  margin-bottom: 1rem;
}

.shortcut-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.shortcut-row:last-child {
  border-bottom: none;
}

.shortcut-row .shortcut-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --- Comparison Boxes --- */
.comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 1.5rem 0;
}

.comparison-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: 10px;
  padding: 1.5rem;
}

.comparison-box h4 {
  margin-top: 0;
}

/* --- Inline Highlight --- */
.highlight {
  color: var(--accent-magenta);
  font-weight: 600;
}

/* --- Divider with text --- */
.divider-text {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 2.5rem 0;
  color: var(--text-dim);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-family: var(--font-heading);
  font-weight: 700;
}

.divider-text::before,
.divider-text::after {
  content: '';
  flex: 1;
  border-top: 1px solid var(--border-medium);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .page-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    width: 280px;
    z-index: 999;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.5);
  }

  .sidebar.open {
    display: block;
  }

  .mobile-nav-toggle {
    display: block;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

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

@media (max-width: 768px) {
  .content-area {
    padding: 1.5rem 1rem 3rem;
  }

  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.3rem; }

  .hero { min-height: 360px; padding: 2rem 1rem; }
  .hero h1 { font-size: 2rem; }

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

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

  .header-nav a:not(.launch-btn) {
    display: none;
  }

  .site-header .logo-text {
    font-size: 0.8rem;
  }
}