:root {
  --primary-hue: 38;
  --primary-color: hsl(38, 85%, 58%);
  --secondary-color: hsl(22, 85%, 55%);

  --bg-body: #ffffff;
  --bg-sidebar: #f8f9fa;
  --bg-card: #ffffff;
  --border-color: #e2e8f0;

  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;

  --code-bg: #1e1e1e;
  --code-text: #d4d4d4;

  --sidebar-width: 280px;
  --header-height: 70px;

  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px 0 rgba(0,0,0,0.1), 0 1px 2px 0 rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
}

[data-theme="dark"] {
  --bg-body: #0b0c15;
  --bg-sidebar: #11131f;
  --bg-card: #1a1d2d;
  --border-color: #2d3748;

  --text-main: #f1f5f9;
  --text-muted: #cbd5e1;
  --text-light: #64748b;

  --primary-color: hsl(38, 90%, 65%);
  --secondary-color: hsl(22, 90%, 62%);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.7;
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, .logo, .header-title {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Layout */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  position: fixed;
  top: 0; bottom: 0; left: 0;
  overflow-y: auto;
  transition: transform 0.3s ease;
  z-index: 100;
}

.sidebar-header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  border-bottom: 1px solid var(--border-color);
}

.logo {
  font-weight: 800;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}

.sidebar-nav { padding: 32px 24px; }

.nav-section { margin-bottom: 32px; }

.nav-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-light);
  margin-bottom: 16px;
  font-weight: 700;
}

.nav-links { list-style: none; }

.nav-links li { margin-bottom: 6px; }

.nav-links a {
  display: block;
  padding: 8px 12px;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  font-size: 0.95rem;
  font-weight: 500;
}

[data-theme="dark"] .nav-links a:hover { background-color: rgba(255,255,255,0.05); color: var(--primary-color); }
[data-theme="light"] .nav-links a:hover { background-color: rgba(0,0,0,0.05); color: var(--primary-color); }

.nav-links a.active {
  color: var(--primary-color);
  background-color: rgba(245,158,11,0.1);
  font-weight: 600;
}

/* Main Content */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-width: 0;
}

/* Top Bar */
.top-bar {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 90;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

[data-theme="dark"] .top-bar { background-color: rgba(11,12,21,0.85); }
[data-theme="light"] .top-bar { background-color: rgba(255,255,255,0.85); }

.header-title { font-weight: 600; font-size: 1.1rem; }

.top-actions { display: flex; align-items: center; gap: 16px; }

.icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 8px;
  border-radius: 50%;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-btn:hover { color: var(--text-main); background-color: var(--border-color); }

/* Content */
.content-wrapper {
  display: flex;
  max-width: 1400px;
  margin: 0 auto;
  padding: 60px 40px;
}

.doc-content {
  flex: 1;
  min-width: 0;
  padding-right: 60px;
}

.doc-content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 32px auto;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

/* Sections */
section {
  padding-bottom: 60px;
  border-bottom: 1px dashed var(--border-color);
  margin-bottom: 60px;
}

section:last-child { border-bottom: none; }

/* Hero */
.hero-section h1 {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}

[data-theme="dark"] .hero-section h1 {
  background: linear-gradient(135deg, #fff 30%, #94a3b8);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .hero-section h1 {
  background: linear-gradient(135deg, var(--text-main) 30%, var(--text-muted));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  font-size: 1.4rem;
  margin-bottom: 8px;
  font-weight: 500;
}

.hero-meta {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.hero-venue {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  margin-top: -8px;
}

.venue-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-light);
  margin-right: 6px;
}

.gradient-text {
  background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Jaseci Link Button */
.jaseci-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #0f1117;
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all 0.3s;
  box-shadow: 0 4px 20px rgba(245,158,11,0.3);
  margin-bottom: 40px;
}

.jaseci-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(245,158,11,0.45);
  color: #0f1117;
}

.jaseci-cta svg { width: 16px; height: 16px; }

.text-block p {
  margin-bottom: 24px;
  font-size: 1.05rem;
  color: var(--text-muted);
}

.text-block ul, .text-block ol {
  margin-bottom: 24px;
  padding-left: 24px;
  color: var(--text-muted);
}

.text-block li { margin-bottom: 8px; font-size: 1.05rem; }

/* Stats Row */
.stats-section {
  text-align: center;
}

.stats-section h2 {
  margin-bottom: 24px;
}

.stats-row {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  justify-content: center;
  padding: 24px 0;
  margin: 0;
}

.stat-val {
  font-size: 2rem;
  font-weight: 800;
  font-family: 'Inter', sans-serif;
  background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}

.stat-lbl {
  font-size: 0.75rem;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 2px;
}

/* NSF Badge */
.nsf-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-top: 8px;
}

/* Jaseci Highlight Card */
.jaseci-highlight-card {
  display: block;
  text-decoration: none;
  padding: 20px 24px;
  margin-bottom: 32px;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(234, 88, 12, 0.05) 100%);
  border: 1px solid rgba(245, 158, 11, 0.25);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.jaseci-highlight-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.jaseci-highlight-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(245, 158, 11, 0.2);
  border-color: rgba(245, 158, 11, 0.5);
}

.jhc-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary-color);
  background: rgba(245, 158, 11, 0.15);
  padding: 5px 12px;
  border-radius: 4px;
  margin-bottom: 12px;
}

.jhc-content {
  display: flex;
  align-items: center;
  gap: 14px;
}

.jhc-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0f1117;
}

.jhc-icon svg {
  width: 20px;
  height: 20px;
}

.jhc-text {
  flex: 1;
}

.jhc-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 2px;
}

.jhc-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Theme Card Additional Styles */
.theme-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.code-hl {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: 5px;
  padding: 2px 8px;
  font-size: 0.85em;
  color: var(--primary-color);
}

.research-items {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 8px;
}

.research-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.research-dot {
  width: 8px;
  height: 8px;
  min-width: 8px;
  background: var(--secondary-color);
  border-radius: 50%;
  margin-top: 6px;
}

.research-item strong {
  color: var(--primary-color);
  font-weight: 600;
}

/* CTA Block */
.cta-block {
  margin: 40px 0 0;
  padding: 36px 32px;
  background: linear-gradient(180deg, rgba(245,158,11,0.07) 0%, rgba(245,158,11,0.02) 100%);
  border: 1px solid rgba(245,158,11,0.22);
  border-radius: var(--radius-lg);
  text-align: center;
}

.cta-block p {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 32px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #0f1117;
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all 0.3s;
  box-shadow: 0 4px 20px rgba(245,158,11,0.25);
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(245,158,11,0.4);
  color: #0f1117;
}

.cta-btn svg { width: 16px; height: 16px; }

/* Section Headings */
h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

/* Hero sub */
.hero-sub {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 10px;
  margin-top: -4px;
}

.hero-sub-highlight {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 12px;
  margin-top: -8px;
  padding: 8px 0;
  border-left: 4px solid var(--primary-color);
  padding-left: 16px;
  background: linear-gradient(90deg, rgba(245, 158, 11, 0.08) 0%, transparent 100%);
}

[data-theme="light"] .hero-sub-highlight {
  background: linear-gradient(90deg, rgba(245, 158, 11, 0.12) 0%, transparent 100%);
}

/* Tutorial Themes */
.themes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 28px;
}

.theme-card {
  border-radius: var(--radius-lg);
  padding: 28px 28px 32px;
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}

.theme-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(245, 158, 11, 0.15);
}

.theme-card.theme-1 {
  background: linear-gradient(145deg, rgba(245,158,11,0.12) 0%, rgba(245,158,11,0.03) 100%);
  border: 1px solid rgba(245,158,11,0.25);
}

.theme-card.theme-1:hover {
  border-color: rgba(245,158,11,0.5);
}

.theme-card.theme-2 {
  background: linear-gradient(145deg, rgba(234,88,12,0.12) 0%, rgba(234,88,12,0.03) 100%);
  border: 1px solid rgba(234,88,12,0.25);
}

.theme-card.theme-2:hover {
  border-color: rgba(234,88,12,0.5);
}

.theme-number {
  font-size: 4rem;
  font-weight: 800;
  position: absolute;
  top: -10px;
  right: 16px;
  opacity: 0.08;
  line-height: 1;
  pointer-events: none;
}

.theme-1 .theme-number { color: var(--primary-color); }
.theme-2 .theme-number { color: var(--secondary-color); }

.theme-glow {
  position: absolute;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.15;
  pointer-events: none;
  top: -30px;
  right: -30px;
  transition: opacity 0.3s;
}

.theme-card:hover .theme-glow {
  opacity: 0.25;
}

.theme-1 .theme-glow { background: var(--primary-color); }
.theme-2 .theme-glow { background: var(--secondary-color); }

.theme-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
  display: inline-block;
  padding: 4px 10px;
  border-radius: 4px;
}

.theme-1 .theme-label { 
  color: var(--primary-color); 
  background: rgba(245, 158, 11, 0.15);
}

.theme-2 .theme-label { 
  color: var(--secondary-color); 
  background: rgba(234, 88, 12, 0.15);
}

.theme-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-main);
}

.theme-audience {
  font-size: 0.82rem;
  color: var(--text-light);
  font-style: italic;
  margin-bottom: 12px;
}

.theme-card p:not(.theme-audience) {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.theme-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.theme-list li {
  font-size: 0.95rem;
  color: var(--text-muted);
  padding-left: 14px;
  position: relative;
  line-height: 1.5;
}

.theme-list li::before {
  content: '•';
  color: var(--secondary-color);
  position: absolute;
  left: 0;
  font-weight: bold;
}

.theme-list li strong { color: var(--text-main); }

/* Resources Grid */
.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.resource-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-decoration: none;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.resource-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.resource-card h3 {
  color: var(--primary-color);
  margin-bottom: 8px;
  font-size: 1.1rem;
}

.resource-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0;
}

/* Research Papers List */
.papers-section {
  margin-top: 40px;
}

.papers-section h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.papers-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.papers-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.papers-list li:hover {
  border-color: var(--primary-color);
  background: rgba(245, 158, 11, 0.03);
}

.paper-icon {
  width: 20px;
  height: 20px;
  min-width: 20px;
  color: var(--primary-color);
  margin-top: 2px;
}

.papers-list a {
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.95rem;
  line-height: 1.5;
  transition: color 0.2s;
}

.papers-list a:hover {
  color: var(--primary-color);
}

/* Timeline / Schedule */
.timeline {
  margin-top: 32px;
  position: relative;
  border-left: 2px solid var(--border-color);
  padding-left: 32px;
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -39px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--bg-body);
  border: 2px solid var(--primary-color);
}

.timeline-item .time {
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--secondary-color);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.timeline-item .content h3 { font-size: 1.15rem; margin-bottom: 8px; }

.timeline-item .content p {
  margin-bottom: 8px;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.timeline-tbd {
  margin-top: 32px;
  padding: 40px 24px;
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-lg);
  text-align: center;
  background-color: var(--bg-sidebar);
}

.timeline-tbd h3 { font-size: 1.2rem; margin-bottom: 8px; }
.timeline-tbd p { color: var(--text-muted); font-size: 0.95rem; margin: 0; }

/* Organizers Grid */
.organizers-grid {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  margin-top: 40px;
}

.organizers-row {
  display: flex;
  flex-direction: row !important;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-start;
  gap: 24px;
  width: 100%;
}

.organizer-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px 16px;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
  text-decoration: none;
  color: inherit;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  width: 180px;
  min-height: 160px;
  flex-shrink: 0;
  box-sizing: border-box;
}

.organizer-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.photo-placeholder {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--bg-sidebar), var(--border-color));
  margin: 0 auto 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 3px solid var(--bg-card);
  box-shadow: var(--shadow-md), 0 0 0 2px var(--border-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  flex-shrink: 0;
}

.photo-placeholder:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-lg), 0 0 0 2px var(--primary-color);
}

.photo-placeholder img { 
  width: 100%; 
  height: 100%; 
  object-fit: cover;
  object-position: 55% 30%;
}

.organizer-card h3 { 
  font-size: 0.9rem; 
  margin-bottom: 4px; 
  word-wrap: break-word;
  line-height: 1.3;
}

.organizer-card .affiliation {
  color: var(--primary-color);
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.organizer-card .bio {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* On This Page Aside */
.on-this-page {
  width: 220px;
  position: sticky;
  top: 100px;
  align-self: start;
  display: none;
}

@media (min-width: 1024px) { .on-this-page { display: block; } }

.on-this-page h4 {
  font-size: 0.78rem;
  text-transform: uppercase;
  color: var(--text-main);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.on-this-page ul {
  list-style: none;
  border-left: 2px solid var(--border-color);
}

.on-this-page li a {
  display: block;
  padding: 4px 0 4px 16px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color 0.2s, border-color 0.2s;
  border-left: 2px solid transparent;
  margin-left: -2px;
}

.on-this-page li a:hover { color: var(--primary-color); }

.on-this-page li a.active {
  color: var(--primary-color);
  border-left-color: var(--primary-color);
  font-weight: 600;
}

/* Footer */
.site-footer {
  padding: 40px;
  text-align: center;
  color: var(--text-light);
  border-top: 1px solid var(--border-color);
}

.site-footer a {
  color: var(--primary-color);
  text-decoration: none;
  transition: opacity 0.2s;
}

.site-footer a:hover {
  opacity: 0.8;
}

/* Mobile menu */
#mobile-menu-btn { display: block; margin-right: 16px; }
#mobile-close-btn { display: none; }

body.sidebar-hidden .sidebar { transform: translateX(-100%); }
body.sidebar-hidden .main-content { margin-left: 0; }

@media (max-width: 768px) {
  :root { --sidebar-width: 0px; }

  .sidebar {
    transform: translateX(-100%);
    width: 280px;
  }

  .sidebar.open {
    transform: translateX(0);
    box-shadow: 20px 0 50px rgba(0,0,0,0.3);
  }

  .main-content { margin-left: 0; }

  #mobile-close-btn { display: block; }

  .top-bar { padding: 0 20px; }

  .content-wrapper {
    padding: 40px 20px;
    flex-direction: column;
  }

  .doc-content { padding-right: 0; }

  .hero-section h1 { font-size: 2.2rem; }

  .stats-row { gap: 24px; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background-color: var(--border-color); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background-color: var(--text-light); }