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

:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1a2235;
  --bg-card-hover: #1f2a40;
  --text-primary: #f0f4f8;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --border-color: #1e293b;
  --gradient-1: linear-gradient(135deg, #3b82f6, #8b5cf6);
  --gradient-2: linear-gradient(135deg, #10b981, #3b82f6);
  --radius: 12px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 23, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 0 24px;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 24px;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  flex-shrink: 0;
}

.logo-img {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  object-fit: cover;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-title {
  font-weight: 700;
  font-size: 16px;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-subtitle {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 500;
}

.nav-search {
  flex: 1;
  max-width: 500px;
  position: relative;
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--text-muted);
}

.nav-search input {
  width: 100%;
  padding: 10px 16px 10px 44px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.nav-search input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.nav-search input::placeholder {
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  gap: 4px;
  align-items: center;
  flex-wrap: wrap;
}

.nav-link {
  padding: 6px 12px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  border-radius: 8px;
  transition: all 0.2s;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-secondary);
}

.nav-dropdown {
  position: relative;
}

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 6px 0;
  min-width: 160px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  z-index: 200;
}

.nav-dropdown:hover .nav-dropdown-menu {
  display: block;
}

.nav-dropdown-menu a {
  display: block;
  padding: 8px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s;
}

.nav-dropdown-menu a:hover {
  color: var(--text-primary);
  background: var(--bg-secondary);
}

.hero {
  position: relative;
  padding: 60px 24px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(59, 130, 246, 0.12), transparent 60%),
              radial-gradient(ellipse at 70% 50%, rgba(139, 92, 246, 0.1), transparent 60%);
}

.hero-content {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.hero h1 {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #f0f4f8, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.hero p {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 32px;
}

.hero p strong {
  color: var(--accent-blue);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-number {
  font-size: 28px;
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

.main-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px 60px;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
}

.sidebar {
  position: sticky;
  top: 80px;
  align-self: start;
}

.sidebar-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

.sidebar-section h3 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 12px;
  font-weight: 600;
}

.category-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.category-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
  text-align: left;
  width: 100%;
}

.category-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.category-btn.active {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-blue);
  font-weight: 600;
}

.category-btn .cat-icon {
  font-size: 18px;
  width: 24px;
  text-align: center;
}

.category-btn .cat-count {
  margin-left: auto;
  font-size: 12px;
  color: var(--text-muted);
  background: var(--bg-secondary);
  padding: 2px 8px;
  border-radius: 10px;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  padding: 5px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 500;
}

.tag:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  background: rgba(59, 130, 246, 0.1);
}

.about-section p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  line-height: 1.5;
}

.feed {
  min-width: 0;
}

.feed-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.feed-header h2 {
  font-size: 20px;
  font-weight: 700;
}

.feed-controls {
  display: flex;
  gap: 4px;
  background: var(--bg-secondary);
  padding: 3px;
  border-radius: 8px;
}

.sort-btn {
  padding: 6px 14px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 13px;
  font-family: inherit;
  font-weight: 500;
  cursor: pointer;
  border-radius: 6px;
  transition: all 0.2s;
}

.sort-btn.active {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.article-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px 24px;
  transition: all 0.2s;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}

.article-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(59, 130, 246, 0.3);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.article-source {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-blue);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.article-category-badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-rapamycin {
  background: rgba(139, 92, 246, 0.15);
  color: #a78bfa;
}

.badge-nad {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
}

.badge-longevity-research {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
}

.article-date {
  font-size: 12px;
  color: var(--text-muted);
  margin-left: auto;
}

.article-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
  color: var(--text-primary);
}

.article-snippet {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.bookmark-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
  padding: 2px 6px;
  line-height: 1;
  transition: all 0.2s;
  margin-left: 8px;
  flex-shrink: 0;
}

.bookmark-btn:hover {
  color: var(--accent-amber);
  transform: scale(1.2);
}

.bookmark-btn.bookmarked {
  color: var(--accent-amber);
}

.bookmark-count {
  font-size: 11px;
  background: var(--accent-blue);
  color: white;
  padding: 1px 6px;
  border-radius: 10px;
  margin-left: 4px;
  font-weight: 600;
}

.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 60px 0;
  color: var(--text-muted);
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.no-results {
  text-align: center;
  padding: 60px 0;
  color: var(--text-muted);
  font-size: 16px;
}

.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 32px;
}

.page-btn {
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
}

.page-btn:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.page-btn.active {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
  color: white;
}

.page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 40px;
  max-width: 640px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 28px;
  cursor: pointer;
  line-height: 1;
}

.modal-content h2 {
  font-size: 24px;
  margin-bottom: 16px;
}

.modal-content p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.6;
}

.about-cards {
  display: grid;
  gap: 16px;
  margin: 24px 0;
}

.about-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px;
}

.about-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.about-card p {
  font-size: 14px;
  margin-bottom: 0;
}

.about-founder {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px;
  margin: 16px 0;
}

.about-founder h3 {
  font-size: 16px;
  margin-bottom: 8px;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-founder p {
  font-size: 14px;
  margin-bottom: 0;
}

.about-disclaimer {
  font-size: 13px;
  color: var(--text-muted);
  font-style: italic;
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}

.footer {
  border-top: 1px solid var(--border-color);
  padding: 32px 24px;
  text-align: center;
}

.footer-content {
  max-width: 600px;
  margin: 0 auto;
}

.footer p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.footer-disclaimer {
  font-size: 12px;
}

.treatments-page {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px 60px;
}

.treatments-container {
  width: 100%;
}

.treatments-header {
  text-align: center;
  margin-bottom: 32px;
}

.treatments-header h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 8px;
}

.treatments-header p {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 24px;
}

.treatment-filter-bar {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.treatment-filter-bar select {
  padding: 10px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  cursor: pointer;
  min-width: 200px;
}

.treatment-filter-bar select:focus {
  border-color: var(--accent-blue);
}

.treatment-search input {
  padding: 10px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  min-width: 250px;
}

.treatment-search input:focus {
  border-color: var(--accent-blue);
}

.disclaimer-banner {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius);
  padding: 14px 20px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.5;
}

.disclaimer-banner strong {
  color: var(--accent-amber);
}

.treatment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 16px;
}

.treatment-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  cursor: pointer;
  transition: all 0.2s;
}

.treatment-card:hover {
  border-color: rgba(59, 130, 246, 0.3);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.treatment-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.treatment-card-icon {
  font-size: 28px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border-radius: 12px;
  flex-shrink: 0;
}

.treatment-card-info h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 2px;
}

.treatment-card-category {
  font-size: 11px;
  color: var(--accent-blue);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.treatment-card-score {
  margin-left: auto;
  text-align: center;
  flex-shrink: 0;
}

.score-value {
  font-size: 20px;
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.score-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.treatment-card-body {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.treatment-card-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.treatment-tag {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 6px;
  font-weight: 600;
}

.tag-fda {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
}

.tag-offlabel {
  background: rgba(139, 92, 246, 0.15);
  color: #a78bfa;
}

.tag-supplement {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
}

.treatment-modal-content {
  max-width: 720px;
}

.treatment-detail-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.treatment-detail-icon {
  font-size: 36px;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border-radius: 16px;
  flex-shrink: 0;
}

.treatment-detail-header h2 {
  font-size: 22px;
  margin-bottom: 4px;
}

.treatment-detail-meta {
  font-size: 12px;
  color: var(--accent-blue);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.treatment-section {
  margin-bottom: 20px;
}

.treatment-section h4 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 8px;
  font-weight: 600;
}

.treatment-section p,
.treatment-section li {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.treatment-section ul {
  list-style: none;
  padding: 0;
}

.treatment-section ul li {
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
}

.treatment-section ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent-blue);
}

.treatment-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.treatment-info-item {
  background: var(--bg-secondary);
  border-radius: 8px;
  padding: 14px;
}

.treatment-info-item label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  display: block;
  margin-bottom: 4px;
  font-weight: 600;
}

.treatment-info-item span {
  font-size: 14px;
  color: var(--text-primary);
  font-weight: 500;
}

.lifestyle-page {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px 60px;
}

.lifestyle-container {
  width: 100%;
}

.lifestyle-header {
  text-align: center;
  margin-bottom: 36px;
}

.lifestyle-header h2 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 8px;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.lifestyle-header p {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 24px;
}

.lifestyle-search input {
  padding: 12px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  min-width: 300px;
}

.lifestyle-search input:focus {
  border-color: var(--accent-blue);
}

.lifestyle-sections {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.lifestyle-section-block {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 28px;
  transition: border-color 0.2s;
}

.lifestyle-section-block:hover {
  border-color: rgba(59, 130, 246, 0.2);
}

.lifestyle-section-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 8px;
}

.lifestyle-section-icon {
  font-size: 32px;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border-radius: 14px;
  flex-shrink: 0;
}

.lifestyle-section-header h3 {
  font-size: 22px;
  font-weight: 700;
}

.lifestyle-section-desc {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 20px;
  padding-left: 70px;
}

.lifestyle-items-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 14px;
}

.lifestyle-item-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  cursor: pointer;
  transition: all 0.2s;
}

.lifestyle-item-card:hover {
  border-color: rgba(59, 130, 246, 0.3);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.lifestyle-item-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.lifestyle-item-icon {
  font-size: 22px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 10px;
  flex-shrink: 0;
}

.lifestyle-item-header h4 {
  font-size: 15px;
  font-weight: 700;
}

.lifestyle-item-summary {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.lifestyle-item-evidence {
  margin-top: 10px;
  font-size: 11px;
  color: var(--accent-blue);
  font-weight: 600;
}

.lifestyle-modal-content {
  max-width: 720px;
}

.lifestyle-detail-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.lifestyle-detail-icon {
  font-size: 36px;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border-radius: 16px;
  flex-shrink: 0;
}

.lifestyle-detail-header h2 {
  font-size: 22px;
  margin-bottom: 4px;
}

.lifestyle-detail-evidence {
  font-size: 12px;
  color: var(--accent-blue);
  font-weight: 600;
}

.lifestyle-detail-summary {
  font-size: 15px;
  color: var(--text-primary);
  line-height: 1.7;
  margin-bottom: 20px;
  padding: 16px;
  background: rgba(59, 130, 246, 0.05);
  border-left: 3px solid var(--accent-blue);
  border-radius: 0 8px 8px 0;
}

.lifestyle-detail-body {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.lifestyle-tips {
  margin-bottom: 20px;
}

.lifestyle-tips h4 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 12px;
  font-weight: 600;
}

.lifestyle-tips ul {
  list-style: none;
  padding: 0;
}

.lifestyle-tips li {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  padding: 8px 0;
  padding-left: 24px;
  position: relative;
  border-bottom: 1px solid rgba(255,255,255,0.03);
}

.lifestyle-tips li:last-child {
  border-bottom: none;
}

.lifestyle-tips li::before {
  content: '✦';
  position: absolute;
  left: 0;
  color: var(--accent-blue);
  font-size: 12px;
}

.lifestyle-search-results {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 14px;
}

.lifestyle-search-result-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  cursor: pointer;
  transition: all 0.2s;
}

.lifestyle-search-result-card:hover {
  border-color: rgba(59, 130, 246, 0.3);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.lifestyle-result-section {
  font-size: 11px;
  color: var(--accent-purple);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
  margin-bottom: 6px;
}

.product-recs {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.product-recs h4 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 4px;
  font-weight: 600;
}

.product-recs-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 14px;
  font-style: italic;
}

.product-recs-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.product-rec-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 12px 16px;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s;
}

.product-rec-card:hover {
  border-color: rgba(59, 130, 246, 0.3);
  background: rgba(59, 130, 246, 0.05);
}

.product-rec-info {
  flex: 1;
  min-width: 0;
}

.product-rec-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.product-rec-note {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.4;
}

.product-rec-type {
  font-size: 10px;
  padding: 3px 8px;
  border-radius: 6px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: rgba(59, 130, 246, 0.12);
  color: #60a5fa;
  white-space: nowrap;
}

.product-rec-link {
  font-size: 12px;
  color: var(--accent-blue);
  font-weight: 600;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.product-rec-link::after {
  content: '→';
}

.newsletter-bar {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(139, 92, 246, 0.08));
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 32px 24px;
  text-align: center;
}

.newsletter-content {
  max-width: 600px;
  margin: 0 auto;
}

.newsletter-content h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

.newsletter-content p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 16px;
}

.newsletter-form {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.newsletter-form input {
  padding: 12px 18px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  min-width: 280px;
}

.newsletter-form input:focus {
  border-color: var(--accent-blue);
}

.newsletter-form button {
  padding: 12px 24px;
  background: var(--gradient-1);
  border: none;
  border-radius: 10px;
  color: white;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: opacity 0.2s;
  white-space: nowrap;
}

.newsletter-form button:hover {
  opacity: 0.9;
}

.newsletter-success {
  color: #34d399;
  font-size: 14px;
  font-weight: 500;
  padding: 12px;
}

@media (max-width: 600px) {
  .newsletter-form {
    flex-direction: column;
  }

  .newsletter-form input {
    min-width: auto;
    width: 100%;
  }
}

@media (max-width: 900px) {
  .main-content {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .sidebar-section:last-child {
    grid-column: 1 / -1;
  }

  .hero h1 {
    font-size: 28px;
  }

  .hero p {
    font-size: 15px;
  }

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

@media (max-width: 600px) {
  .nav-container {
    flex-wrap: wrap;
    height: auto;
    padding: 12px 0;
    gap: 12px;
  }

  .nav-search {
    order: 3;
    max-width: none;
    width: 100%;
  }

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

  .hero {
    padding: 40px 16px;
  }

  .hero h1 {
    font-size: 24px;
  }

  .article-card {
    padding: 16px;
  }

  .article-meta {
    flex-wrap: wrap;
    gap: 6px;
  }

  .article-date {
    margin-left: 0;
    width: 100%;
  }

  .lifestyle-items-grid {
    grid-template-columns: 1fr;
  }

  .lifestyle-section-desc {
    padding-left: 0;
  }

  .lifestyle-search input {
    min-width: 200px;
    width: 100%;
  }

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

  .qna-category-tabs {
    flex-wrap: wrap;
  }

  .qna-tab {
    font-size: 12px;
    padding: 6px 10px;
  }
}

.qna-page {
  padding: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.qna-container {
  width: 100%;
}

.qna-header {
  text-align: center;
  margin-bottom: 32px;
}

.qna-header h2 {
  font-size: 32px;
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.qna-header p {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 600px;
  margin: 0 auto 20px;
}

.qna-search {
  max-width: 500px;
  margin: 0 auto;
}

.qna-search input {
  width: 100%;
  padding: 12px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.qna-search input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.qna-category-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
}

.qna-tab {
  padding: 8px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  color: var(--text-secondary);
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
}

.qna-tab:hover {
  border-color: var(--accent-blue);
  color: var(--text-primary);
}

.qna-tab.active {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
  color: white;
}

.qna-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.qna-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.qna-item:hover {
  border-color: rgba(59, 130, 246, 0.3);
}

.qna-item.open {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.1);
}

.qna-question {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
}

.qna-q-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  min-width: 32px;
  background: var(--gradient-1);
  border-radius: 8px;
  color: white;
  font-weight: 700;
  font-size: 14px;
}

.qna-q-text {
  flex: 1;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
}

.qna-expand-icon {
  font-size: 22px;
  color: var(--text-muted);
  min-width: 24px;
  text-align: center;
  font-weight: 300;
  transition: color 0.2s;
}

.qna-item.open .qna-expand-icon {
  color: var(--accent-blue);
}

.qna-answer {
  display: none;
  padding: 0 20px 20px;
  padding-left: 66px;
}

.qna-item.open .qna-answer {
  display: block;
}

.qna-answer p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 14px;
}

.qna-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.qna-tag {
  padding: 3px 10px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 12px;
  font-size: 11px;
  color: var(--accent-blue);
  font-weight: 500;
}

.article-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 8px;
}

.article-keyword {
  padding: 2px 8px;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: 10px;
  font-size: 10px;
  color: var(--accent-purple);
  cursor: pointer;
  transition: all 0.2s;
}

.article-keyword:hover {
  background: rgba(139, 92, 246, 0.2);
  border-color: var(--accent-purple);
}

.badge-senolytics { background: rgba(16, 185, 129, 0.15); color: var(--accent-emerald); }
.badge-gene-therapy { background: rgba(139, 92, 246, 0.15); color: var(--accent-purple); }
.badge-biomarkers { background: rgba(245, 158, 11, 0.15); color: var(--accent-amber); }
.badge-caloric-restriction { background: rgba(59, 130, 246, 0.15); color: var(--accent-blue); }
.badge-supplements { background: rgba(16, 185, 129, 0.15); color: var(--accent-emerald); }
.badge-exercise { background: rgba(245, 158, 11, 0.15); color: var(--accent-amber); }

.trials-page {
  padding: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.trials-container { width: 100%; }

.trials-header {
  text-align: center;
  margin-bottom: 32px;
}

.trials-header h2 {
  font-size: 32px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-emerald), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.trials-header p {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 600px;
  margin: 0 auto 20px;
}

.trials-search {
  max-width: 600px;
  margin: 0 auto;
}

.trials-search input {
  width: 100%;
  padding: 12px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.trials-search input:focus {
  border-color: var(--accent-emerald);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

.trials-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.trial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color 0.2s;
}

.trial-card:hover {
  border-color: rgba(16, 185, 129, 0.3);
}

.trial-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.trial-status {
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.trial-status-recruiting {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
}

.trial-status-activenotrecruiting {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-blue);
}

.trial-status-enrollingbyinvitation {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
}

.trial-phase {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

.trial-nct {
  margin-left: auto;
  font-size: 12px;
  color: var(--accent-blue);
  text-decoration: none;
  font-family: monospace;
}

.trial-nct:hover {
  text-decoration: underline;
}

.trial-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 8px;
}

.trial-summary {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}

.trial-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.trial-conditions {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.trial-condition-tag {
  padding: 2px 8px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: 10px;
  font-size: 11px;
  color: var(--accent-blue);
}

.trial-locations {
  font-size: 12px;
  color: var(--text-muted);
}

.nav-link-cta {
  background: var(--gradient-2) !important;
  -webkit-background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  background-clip: text !important;
  font-weight: 700 !important;
}

.protocols-container, .providers-container, .network-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 24px;
}

.protocols-header, .providers-header {
  text-align: center;
  margin-bottom: 32px;
}

.protocols-header h2, .providers-header h2 {
  font-size: 32px;
  font-weight: 800;
  background: var(--gradient-2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.protocols-header p, .providers-header p {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 600px;
  margin: 0 auto 20px;
}

.providers-search {
  max-width: 600px;
  margin: 0 auto;
}

.providers-search input {
  width: 100%;
  padding: 12px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.providers-search input:focus {
  border-color: var(--accent-emerald);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

.protocols-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.protocol-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.15s;
}

.protocol-card:hover {
  border-color: rgba(16, 185, 129, 0.3);
  transform: translateY(-2px);
}

.protocol-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.protocol-icon {
  font-size: 28px;
}

.protocol-icon-lg {
  font-size: 42px;
  display: block;
  margin-bottom: 12px;
}

.protocol-card-info h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
}

.protocol-category {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

.protocol-evidence {
  margin-left: auto;
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: flex-end;
}

.evidence-badge {
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.evidence-strong {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
}

.evidence-moderate {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-blue);
}

.evidence-emerging {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
}

.evidence-type {
  font-size: 11px;
  color: var(--text-muted);
}

.protocol-summary {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 14px;
}

.protocol-sections-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.protocol-section-tag {
  padding: 3px 10px;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.15);
  border-radius: 10px;
  font-size: 11px;
  color: var(--accent-purple);
}

.protocol-detail-header {
  margin-bottom: 24px;
}

.protocol-detail-header h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 8px;
}

.protocol-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.protocol-sections {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.protocol-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 18px;
}

.protocol-section h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent-emerald);
  margin-bottom: 8px;
}

.protocol-section p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.protocol-disclaimer {
  padding: 16px;
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: 10px;
  font-size: 13px;
  color: var(--accent-amber);
  line-height: 1.6;
}

.protocol-modal-content, .provider-modal-content {
  max-width: 700px;
}

.providers-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.provider-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.15s;
}

.provider-card:hover {
  border-color: rgba(16, 185, 129, 0.3);
  transform: translateY(-2px);
}

.provider-card-top {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.provider-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--gradient-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

.provider-avatar-lg {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: var(--gradient-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

.provider-card-info h3 {
  font-size: 17px;
  font-weight: 700;
}

.provider-credentials {
  font-size: 13px;
  color: var(--accent-blue);
  font-weight: 500;
  display: block;
}

.provider-title {
  font-size: 12px;
  color: var(--text-muted);
  display: block;
}

.provider-badges {
  margin-left: auto;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.provider-badge {
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.provider-badge.founding {
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-purple);
}

.provider-badge.partner {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-blue);
}

.provider-badge.accepting {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
}

.provider-badge.waitlist {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
}

.provider-bio {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
}

.provider-details {
  display: flex;
  gap: 16px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.provider-location, .provider-telehealth {
  font-size: 13px;
  color: var(--text-muted);
}

.provider-focus {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.provider-focus-tag {
  padding: 3px 10px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.15);
  border-radius: 10px;
  font-size: 11px;
  color: var(--accent-emerald);
}

.provider-detail-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.provider-detail-header h2 {
  font-size: 24px;
  font-weight: 800;
}

.provider-detail-body {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.provider-detail-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 18px;
}

.provider-detail-section h3 {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-emerald);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.provider-detail-section p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.network-hero {
  text-align: center;
  padding: 48px 20px;
  margin-bottom: 40px;
}

.network-badge {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-emerald);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 20px;
}

.network-hero h2 {
  font-size: 42px;
  font-weight: 800;
  background: var(--gradient-2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
  margin-bottom: 16px;
}

.network-hero p {
  color: var(--text-secondary);
  font-size: 18px;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

.network-benefits {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 48px;
}

.benefit-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  transition: border-color 0.2s, transform 0.15s;
}

.benefit-card:hover {
  border-color: rgba(16, 185, 129, 0.3);
  transform: translateY(-2px);
}

.benefit-icon {
  font-size: 32px;
  display: block;
  margin-bottom: 12px;
}

.benefit-card h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.benefit-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.network-tiers-section {
  margin-bottom: 48px;
}

.network-tiers-section h3 {
  font-size: 24px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 24px;
}

.network-tiers {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.tier-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
  transition: border-color 0.2s;
}

.tier-card.tier-highlight {
  border-color: var(--accent-emerald);
  box-shadow: 0 0 30px rgba(16, 185, 129, 0.1);
}

.tier-recommended {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 16px;
  background: var(--accent-emerald);
  color: white;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: 10px;
}

.tier-card h4 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 8px;
}

.tier-price {
  font-size: 16px;
  color: var(--accent-emerald);
  font-weight: 700;
  margin-bottom: 18px;
}

.tier-features {
  list-style: none;
  margin-bottom: 24px;
}

.tier-features li {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 6px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.tier-btn {
  width: 100%;
  padding: 12px;
  background: var(--gradient-2);
  border: none;
  border-radius: 10px;
  color: white;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
}

.tier-btn:hover {
  opacity: 0.9;
}

.network-apply-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 36px;
  margin-bottom: 40px;
}

.network-apply-section h3 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 8px;
}

.network-apply-section > p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.network-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.form-row {
  display: flex;
  gap: 14px;
}

.form-row input {
  flex: 1;
}

.network-form input, .network-form textarea {
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}

.network-form input:focus, .network-form textarea:focus {
  border-color: var(--accent-emerald);
}

.network-form textarea {
  resize: vertical;
  min-height: 100px;
}

.network-apply-btn {
  padding: 14px 32px;
  background: var(--gradient-2);
  border: none;
  border-radius: 10px;
  color: white;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.2s;
  align-self: flex-start;
}

.network-apply-btn:hover {
  opacity: 0.9;
}

.network-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  padding: 32px 0;
}

@media (max-width: 768px) {
  .form-row { flex-direction: column; }
  .network-hero h2 { font-size: 28px; }
  .network-stats { gap: 24px; flex-wrap: wrap; }
  .provider-card-top { flex-direction: column; align-items: flex-start; }
  .provider-badges { margin-left: 0; }
  .protocol-card-header { flex-direction: column; align-items: flex-start; }
  .protocol-evidence { margin-left: 0; align-items: flex-start; }
  .provider-detail-header { flex-direction: column; }
}

/* ====== AI CHATBOT WIDGET ====== */
.chat-widget {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 10000;
  font-family: 'Inter', sans-serif;
}

.chat-toggle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00d2ff, #7b2ff7);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(123, 47, 247, 0.4);
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
}

.chat-toggle:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 28px rgba(123, 47, 247, 0.5);
}

.chat-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 16px;
  height: 16px;
  background: #ff4444;
  border-radius: 50%;
  border: 2px solid #1a1a2e;
}

.chat-window {
  position: absolute;
  bottom: 72px;
  right: 0;
  width: 380px;
  max-height: 520px;
  background: #1e1e32;
  border-radius: 16px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  background: linear-gradient(135deg, rgba(0, 210, 255, 0.15), rgba(123, 47, 247, 0.15));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.chat-header-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.chat-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00d2ff, #7b2ff7);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 12px;
  color: white;
}

.chat-title {
  font-weight: 600;
  font-size: 14px;
  color: #f0f0f0;
}

.chat-status {
  font-size: 11px;
  color: #00d2ff;
}

.chat-close {
  background: none;
  border: none;
  color: #888;
  font-size: 22px;
  cursor: pointer;
  padding: 4px 8px;
  line-height: 1;
}

.chat-close:hover {
  color: #fff;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 280px;
  max-height: 340px;
}

.chat-message {
  display: flex;
}

.chat-message.user {
  justify-content: flex-end;
}

.chat-message.assistant {
  justify-content: flex-start;
}

.chat-bubble {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 13px;
  line-height: 1.5;
  word-wrap: break-word;
}

.chat-message.user .chat-bubble {
  background: linear-gradient(135deg, #7b2ff7, #5b1fd7);
  color: white;
  border-bottom-right-radius: 4px;
}

.chat-message.assistant .chat-bubble {
  background: rgba(255, 255, 255, 0.07);
  color: #e0e0e0;
  border-bottom-left-radius: 4px;
}

.chat-input-area {
  display: flex;
  padding: 12px;
  gap: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(0, 0, 0, 0.2);
}

.chat-input-area input {
  flex: 1;
  padding: 10px 14px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font-size: 13px;
  outline: none;
  font-family: 'Inter', sans-serif;
}

.chat-input-area input:focus {
  border-color: #7b2ff7;
  box-shadow: 0 0 0 2px rgba(123, 47, 247, 0.2);
}

.chat-input-area button {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00d2ff, #7b2ff7);
  border: none;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.2s;
}

.chat-input-area button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.chat-input-area button:hover:not(:disabled) {
  opacity: 0.9;
}

.chat-typing {
  display: flex;
  gap: 4px;
  padding: 14px 18px !important;
}

.chat-typing span {
  width: 8px;
  height: 8px;
  background: #7b2ff7;
  border-radius: 50%;
  animation: chatTyping 1.4s infinite ease-in-out;
}

.chat-typing span:nth-child(2) { animation-delay: 0.2s; }
.chat-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes chatTyping {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}

@media (max-width: 480px) {
  .chat-window {
    width: calc(100vw - 32px);
    right: -8px;
    bottom: 68px;
    max-height: 70vh;
  }
  .chat-widget {
    bottom: 16px;
    right: 16px;
  }
}

/* ====== HERO CTA BUTTONS ====== */
.hero-cta-row {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-top: 28px;
}

.hero-cta {
  padding: 14px 32px;
  border: none;
  border-radius: 12px;
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s;
}

.hero-cta:hover {
  transform: translateY(-2px);
}

.hero-cta-primary {
  background: linear-gradient(135deg, #10b981, #3b82f6);
  color: white;
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.3);
}

.hero-cta-primary:hover {
  box-shadow: 0 6px 28px rgba(16, 185, 129, 0.4);
}

.hero-cta-secondary {
  background: linear-gradient(135deg, #7b2ff7, #00d2ff);
  color: white;
  box-shadow: 0 4px 20px rgba(123, 47, 247, 0.3);
}

.hero-cta-secondary:hover {
  box-shadow: 0 6px 28px rgba(123, 47, 247, 0.4);
}

/* ====== QUICK HEALTH SECTION ====== */
.quick-health-section {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px 24px 0;
}

.quick-health-container {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 20px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
}

.quick-health-score {
  position: relative;
  width: 80px;
  height: 80px;
  flex-shrink: 0;
}

.mini-score-ring {
  width: 80px;
  height: 80px;
}

.mini-score-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.mini-score-value {
  font-size: 22px;
  font-weight: 800;
  background: linear-gradient(135deg, #00d2ff, #7b2ff7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}

.mini-score-label {
  font-size: 9px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 2px;
}

.quick-health-actions {
  flex: 1;
}

.quick-health-actions h3 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.quick-log-buttons {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.quick-log-btn {
  padding: 8px 16px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  transition: all 0.2s;
}

.quick-log-btn:hover {
  border-color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.1);
}

.quick-log-btn.logged-today {
  border-color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
}

.quick-health-streak {
  text-align: center;
  flex-shrink: 0;
  padding: 0 8px;
}

.streak-value {
  font-size: 32px;
  font-weight: 800;
  color: #f59e0b;
  line-height: 1;
}

.streak-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
  white-space: nowrap;
}

.feed-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

@media (max-width: 768px) {
  .quick-health-container {
    flex-direction: column;
    text-align: center;
    gap: 16px;
  }
  .quick-log-buttons {
    justify-content: center;
  }
  .hero-cta-row {
    flex-direction: column;
    align-items: center;
  }
  .nav-dropdown-menu {
    position: fixed;
    left: 50%;
    transform: translateX(-50%);
    top: 64px;
  }
}

/* ====== DAILY BRIEFING ====== */
.daily-briefing {
  max-width: 700px;
  margin: 24px auto 0;
  padding: 20px 24px;
  background: rgba(123, 47, 247, 0.08);
  border: 1px solid rgba(123, 47, 247, 0.2);
  border-radius: 14px;
  text-align: left;
}

.briefing-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: #7b2ff7;
  background: rgba(123, 47, 247, 0.15);
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 10px;
}

.briefing-topic {
  font-size: 16px;
  font-weight: 700;
  color: #f0f0f0;
  margin-bottom: 8px;
}

.briefing-content {
  font-size: 13px;
  line-height: 1.7;
  color: #c0c0d0;
}

/* ====== HEALTH DASHBOARD ====== */
.health-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px;
}

.health-header {
  text-align: center;
  margin-bottom: 40px;
}

.health-header h2 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 8px;
  background: linear-gradient(135deg, #00d2ff, #7b2ff7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.health-header p {
  color: #94a3b8;
  font-size: 15px;
}

.health-score-row {
  display: flex;
  gap: 40px;
  align-items: center;
  justify-content: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.life-clock {
  flex-shrink: 0;
}

.clock-ring {
  width: 200px;
  height: 200px;
  position: relative;
}

.clock-ring svg {
  width: 100%;
  height: 100%;
}

.clock-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.clock-score {
  font-size: 48px;
  font-weight: 800;
  background: linear-gradient(135deg, #00d2ff, #7b2ff7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}

.clock-label {
  font-size: 11px;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 4px;
}

.health-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.health-stat {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
  min-width: 140px;
}

.health-stat-value {
  font-size: 28px;
  font-weight: 800;
  color: #00d2ff;
}

.health-stat-label {
  font-size: 11px;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 4px;
}

/* Activity Logger */
.activity-logger {
  margin-bottom: 32px;
}

.activity-logger h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

.activity-subtitle {
  font-size: 13px;
  color: #94a3b8;
  margin-bottom: 20px;
}

.activity-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
}

.activity-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 16px 10px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.03);
  color: #e0e0e0;
  cursor: pointer;
  transition: all 0.2s;
  font-family: 'Inter', sans-serif;
}

.activity-btn:hover {
  border-color: #7b2ff7;
  background: rgba(123, 47, 247, 0.08);
}

.activity-btn.logged {
  border-color: #10b981;
  background: rgba(16, 185, 129, 0.1);
  box-shadow: 0 0 12px rgba(16, 185, 129, 0.15);
}

.activity-btn.negative {
  border-color: rgba(239, 68, 68, 0.2);
}

.activity-btn.negative:hover {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.08);
}

.activity-btn.negative.logged {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.12);
  box-shadow: 0 0 12px rgba(239, 68, 68, 0.15);
}

.activity-icon {
  font-size: 24px;
}

.activity-name {
  font-size: 12px;
  font-weight: 500;
  text-align: center;
}

.activity-impact {
  font-size: 11px;
  font-weight: 700;
  color: #10b981;
}

.activity-btn.negative .activity-impact {
  color: #ef4444;
}

/* Health Panels */
.health-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.health-panel {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 14px;
  padding: 20px;
}

.health-panel h3 {
  font-size: 14px;
  font-weight: 600;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}

/* Weekly Chart */
.weekly-chart {
  display: flex;
  gap: 8px;
  align-items: flex-end;
  height: 180px;
}

.chart-bar-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  height: 100%;
}

.chart-value {
  font-size: 11px;
  font-weight: 600;
  color: #94a3b8;
}

.chart-bar-track {
  flex: 1;
  width: 100%;
  max-width: 40px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 6px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.chart-bar-fill {
  width: 100%;
  border-radius: 6px;
  min-height: 4px;
  transition: height 0.3s;
}

.chart-label {
  font-size: 11px;
  color: #64748b;
}

/* Today's Log & History */
.todays-log, .activity-history {
  max-height: 300px;
  overflow-y: auto;
}

.log-item, .history-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 13px;
}

.log-item:last-child, .history-item:last-child {
  border-bottom: none;
}

.positive { color: #10b981; font-weight: 600; }
.negative { color: #ef4444; font-weight: 600; }

.history-date {
  font-size: 12px;
  font-weight: 600;
  color: #7b2ff7;
  padding: 12px 0 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ====== MEMBERSHIP TIERS ====== */
.membership-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px;
}

.membership-hero {
  text-align: center;
  margin-bottom: 48px;
}

.membership-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: #00d2ff;
  background: rgba(0, 210, 255, 0.1);
  padding: 5px 16px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.membership-hero h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 12px;
}

.membership-hero p {
  font-size: 16px;
  color: #94a3b8;
  max-width: 600px;
  margin: 0 auto;
}

.membership-tiers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.membership-tier {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
}

.membership-tier:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.tier-featured {
  border-color: #7b2ff7;
  box-shadow: 0 0 30px rgba(123, 47, 247, 0.15);
}

.tier-popular {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  background: linear-gradient(135deg, #7b2ff7, #00d2ff);
  color: white;
  text-align: center;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 6px;
  text-transform: uppercase;
}

.tier-header {
  padding: 32px 24px 24px;
  text-align: center;
}

.tier-featured .tier-header {
  padding-top: 48px;
}

.tier-name {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.tier-price {
  font-size: 42px;
  font-weight: 800;
}

.tier-price span {
  font-size: 16px;
  font-weight: 400;
  color: #94a3b8;
}

.tier-free .tier-price { color: #10b981; }
.tier-pro .tier-price { background: linear-gradient(135deg, #7b2ff7, #00d2ff); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.tier-premium .tier-price { color: #f59e0b; }

.tier-period {
  font-size: 12px;
  color: #64748b;
  margin-top: 4px;
}

.tier-features {
  list-style: none;
  padding: 0 24px;
  margin: 0;
}

.tier-features li {
  padding: 8px 0;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.tier-features li.included::before {
  content: '✓';
  color: #10b981;
  font-weight: 700;
  font-size: 14px;
}

.tier-features li.not-included {
  color: #4a4a6a;
}

.tier-features li.not-included::before {
  content: '—';
  color: #4a4a6a;
}

.tier-btn {
  display: block;
  width: calc(100% - 48px);
  margin: 20px 24px 24px;
  padding: 12px;
  border-radius: 10px;
  border: none;
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
}

.tier-btn:hover { opacity: 0.9; }

.tier-btn-free {
  background: rgba(255, 255, 255, 0.06);
  color: #94a3b8;
  cursor: default;
}

.tier-btn-pro {
  background: linear-gradient(135deg, #7b2ff7, #00d2ff);
  color: white;
}

.tier-btn-premium {
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  color: white;
}

.membership-faq {
  margin-top: 48px;
}

.membership-faq h3 {
  font-size: 24px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 24px;
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.faq-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 20px;
}

.faq-item h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
  color: #00d2ff;
}

.faq-item p {
  font-size: 13px;
  color: #94a3b8;
  line-height: 1.6;
}

@media (max-width: 768px) {
  .membership-tiers { grid-template-columns: 1fr; }
  .health-score-row { flex-direction: column; }
  .health-panels { grid-template-columns: 1fr; }
  .activity-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
  .faq-grid { grid-template-columns: 1fr; }
  .membership-hero h2 { font-size: 28px; }
}

/* ====== LIFE CLOCK ====== */
.birth-date-setup { display: flex; justify-content: center; margin-bottom: 24px; }
.birth-date-card {
  background: linear-gradient(135deg, rgba(13,148,136,0.1), rgba(123,47,247,0.05));
  border: 1px solid rgba(94,234,212,0.15);
  border-radius: 16px; padding: 32px; text-align: center; max-width: 400px; width: 100%;
}
.birth-date-card h3 { font-size: 18px; color: #e2e8f0; margin-bottom: 8px; }
.birth-date-card p { font-size: 13px; color: #64748b; margin-bottom: 16px; }
.birth-date-input {
  padding: 12px 20px; border-radius: 10px; border: 1px solid rgba(94,234,212,0.2);
  background: rgba(15,23,42,0.8); color: #e2e8f0; font-size: 16px; font-family: inherit;
  margin-bottom: 12px; width: 100%;
}
.birth-date-input:focus { outline: none; border-color: #0d9488; }
.birth-date-btn {
  padding: 12px 32px; border-radius: 10px; border: none;
  background: linear-gradient(135deg, #0d9488, #0f766e); color: white;
  font-size: 14px; font-weight: 700; cursor: pointer; font-family: inherit;
}
.birth-date-btn:hover { filter: brightness(1.1); }

.clock-mode-selector {
  display: flex; gap: 4px; margin-bottom: 20px; padding: 3px;
  background: rgba(15,23,42,0.8); border-radius: 10px; border: 1px solid #1e293b;
}
.clock-mode-btn {
  flex: 1; padding: 8px 4px; border: none; border-radius: 8px; cursor: pointer;
  background: transparent; color: #475569; font-size: 12px; font-weight: 600;
  font-family: inherit; transition: all 0.2s;
}
.clock-mode-btn.active { background: #1e293b; color: #5eead4; }

.life-clock-display { margin-bottom: 20px; }

.clock-panel {
  background: linear-gradient(135deg, rgba(15,23,42,0.9), rgba(30,41,59,0.5));
  border-radius: 16px; padding: 24px; border: 1px solid rgba(94,234,212,0.1);
  box-shadow: 0 0 40px rgba(13,148,136,0.05);
}

.clock-section { text-align: center; margin-bottom: 16px; }
.clock-remaining { margin-bottom: 0; margin-top: 16px; }

.clock-label-text {
  font-size: 10px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 3px; color: #64748b; margin-bottom: 10px;
}
.clock-label-text.glow-text { color: #5eead4; }

.clock-digits {
  display: flex; align-items: flex-start; justify-content: center; gap: 2px;
  font-family: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
}
.clock-digits.glow-digits .digit {
  color: #5eead4; text-shadow: 0 0 20px rgba(94,234,212,0.5), 0 0 40px rgba(94,234,212,0.2);
}

.digit-group { display: flex; flex-direction: column; align-items: center; min-width: 48px; }
.digit { font-size: 28px; font-weight: 700; color: #e2e8f0; letter-spacing: 2px; line-height: 1; }
.digit-label { font-size: 8px; font-weight: 500; color: #64748b; text-transform: uppercase; letter-spacing: 1.5px; margin-top: 4px; }
.digit-sep { font-size: 24px; color: #334155; margin: 0 2px; align-self: flex-start; margin-top: 2px; }

.life-progress-bar { padding: 0 8px; margin: 16px 0; }
.life-progress-track {
  width: 100%; height: 6px; border-radius: 3px;
  background: #1e293b; position: relative; overflow: visible;
}
.life-progress-fill {
  position: absolute; left: 0; top: 0; height: 100%;
  border-radius: 3px; background: linear-gradient(90deg, #0d9488, #14b8a6);
  transition: width 1s linear;
}
.life-progress-marker {
  position: absolute; top: -4px; width: 3px; height: 14px; border-radius: 2px;
  background: #5eead4; box-shadow: 0 0 8px rgba(94,234,212,0.6);
  transform: translateX(-50%); transition: left 1s linear;
}
.life-progress-earned {
  position: absolute; right: 0; top: 0; height: 100%;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(90deg, transparent, rgba(94,234,212,0.3));
  animation: earnedPulse 2s ease-in-out infinite;
}
@keyframes earnedPulse { 0%,100% { opacity: 0.4; } 50% { opacity: 0.8; } }
.life-progress-labels {
  display: flex; justify-content: space-between; margin-top: 6px;
  font-size: 10px; color: #475569;
}
.progress-here { color: #5eead4; font-weight: 600; }

.milestone-display { text-align: center; padding: 20px 0; }
.milestone-age {
  font-size: 56px; font-weight: 800; color: #e2e8f0;
  font-family: 'JetBrains Mono', monospace; line-height: 1;
}
.milestone-sub { font-size: 12px; color: #64748b; margin-top: 8px; }

.progress-display { text-align: center; padding: 20px 0; }
.earned-display {
  font-size: 32px; font-weight: 800; color: #5eead4;
  font-family: 'JetBrains Mono', monospace;
  text-shadow: 0 0 20px rgba(94,234,212,0.4);
}

.bio-age-cards { display: flex; gap: 8px; width: 100%; }
.bio-card {
  flex: 1; background: rgba(30,41,59,0.5); border: 1px solid #1e293b;
  border-radius: 12px; padding: 12px 8px; text-align: center;
}
.bio-card-highlight { border-color: rgba(94,234,212,0.2); }
.bio-card-highlight .bio-card-label { color: #5eead4; }
.bio-card-label {
  font-size: 8px; font-weight: 700; letter-spacing: 1px;
  color: #64748b; text-transform: uppercase; margin-bottom: 4px;
}
.bio-card-value {
  font-size: 20px; font-weight: 800; color: #e2e8f0;
  font-family: 'JetBrains Mono', monospace;
}
.bio-card-highlight .bio-card-value { color: #5eead4; }

.health-score-row { margin-bottom: 20px; }

.floating-gain {
  position: fixed; top: 40%; left: 50%; transform: translate(-50%, 0);
  font-size: 32px; font-weight: 800; z-index: 10000; pointer-events: none;
  font-family: 'JetBrains Mono', monospace;
  transition: all 1.5s cubic-bezier(0.4,0,0.2,1);
}
.floating-gain.positive { color: #5eead4; text-shadow: 0 0 30px rgba(94,234,212,0.6); }
.floating-gain.negative { color: #f87171; text-shadow: 0 0 30px rgba(248,113,113,0.6); }
.floating-gain.fade { opacity: 0; transform: translate(-50%, -60px); }

@media (max-width: 600px) {
  .digit { font-size: 20px; }
  .digit-group { min-width: 36px; }
  .digit-sep { font-size: 18px; }
  .milestone-age { font-size: 42px; }
  .earned-display { font-size: 24px; }
  .bio-card-value { font-size: 16px; }
}

/* ====== MARKETPLACE ====== */
.marketplace-container { max-width: 1200px; margin: 0 auto; padding: 40px 20px; }
.marketplace-header { text-align: center; margin-bottom: 32px; }
.marketplace-header h2 { font-size: 2rem; font-weight: 800; margin-bottom: 8px; }
.marketplace-header p { color: var(--text-muted); font-size: 1.05rem; }
.marketplace-search { max-width: 500px; margin: 20px auto 0; }
.marketplace-search input {
  width: 100%; padding: 12px 20px; border-radius: 12px; border: 1px solid #1e293b;
  background: rgba(15,23,42,0.6); color: var(--text-primary); font-size: 15px;
}
.marketplace-search input:focus { border-color: var(--accent-blue); outline: none; }
.marketplace-category-tabs {
  display: flex; gap: 8px; overflow-x: auto; padding-bottom: 12px; margin-bottom: 24px;
  scrollbar-width: thin;
}
.featured-title {
  font-size: 1.1rem; font-weight: 700; margin-bottom: 16px; color: #5eead4;
}
.featured-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; margin-bottom: 32px; }
.marketplace-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }

.product-card {
  background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 16px;
  padding: 20px; transition: all 0.3s; display: flex; gap: 16px;
}
.product-card:hover { border-color: rgba(94,234,212,0.3); transform: translateY(-2px); }
.product-featured { border-color: rgba(94,234,212,0.2); background: rgba(94,234,212,0.03); }
.product-icon { font-size: 2.5rem; flex-shrink: 0; }
.product-info { flex: 1; min-width: 0; }
.product-category-tag {
  font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px;
  color: #64748b; margin-bottom: 4px;
}
.product-name { font-size: 1rem; font-weight: 700; margin-bottom: 6px; color: var(--text-primary); }
.product-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.5; margin-bottom: 8px; }
.product-tags { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 8px; }
.product-tag {
  font-size: 10px; padding: 2px 8px; border-radius: 10px;
  background: rgba(94,234,212,0.1); color: #5eead4; font-weight: 600;
}
.product-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.product-price { font-size: 15px; font-weight: 800; color: #5eead4; }
.product-rating { font-size: 13px; color: #fbbf24; }
.product-evidence { font-size: 11px; color: #64748b; font-style: italic; margin-bottom: 10px; }
.product-buy-btn {
  display: inline-block; padding: 8px 20px; border-radius: 8px; font-weight: 700;
  font-size: 13px; color: white; text-decoration: none;
  background: linear-gradient(135deg, #5eead4 0%, #00d2ff 100%); border: none; cursor: pointer;
  transition: all 0.2s;
}
.product-buy-btn:hover { transform: scale(1.05); box-shadow: 0 4px 15px rgba(94,234,212,0.3); }

/* ====== COURSES ====== */
.courses-container { max-width: 1000px; margin: 0 auto; padding: 40px 20px; }
.courses-header { text-align: center; margin-bottom: 40px; }
.courses-badge {
  display: inline-block; padding: 4px 16px; border-radius: 20px; font-size: 11px; font-weight: 700;
  letter-spacing: 1.5px; background: linear-gradient(135deg, rgba(94,234,212,0.15), rgba(0,210,255,0.15));
  color: #5eead4; border: 1px solid rgba(94,234,212,0.2); margin-bottom: 12px;
}
.courses-header h2 { font-size: 2rem; font-weight: 800; margin-bottom: 8px; }
.courses-header p { color: var(--text-muted); font-size: 1.05rem; }
.courses-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }

.course-card {
  background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 16px;
  padding: 24px; cursor: pointer; transition: all 0.3s; display: flex; gap: 16px;
}
.course-card:hover { border-color: rgba(94,234,212,0.3); transform: translateY(-3px); box-shadow: 0 8px 30px rgba(0,0,0,0.3); }
.course-icon { font-size: 2.5rem; flex-shrink: 0; }
.course-info { flex: 1; }
.course-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 4px; color: var(--text-primary); }
.course-subtitle { font-size: 13px; color: var(--text-secondary); margin-bottom: 12px; line-height: 1.4; }
.course-meta {
  display: flex; gap: 12px; font-size: 12px; color: #64748b; margin-bottom: 12px; flex-wrap: wrap;
}
.course-meta span {
  padding: 2px 8px; background: rgba(30,41,59,0.5); border-radius: 8px;
}
.course-footer { display: flex; justify-content: space-between; align-items: center; }
.course-price { font-size: 1.2rem; font-weight: 800; color: #5eead4; }
.course-status {
  font-size: 11px; font-weight: 700; padding: 4px 12px; border-radius: 12px;
  background: rgba(251,191,36,0.1); color: #fbbf24; letter-spacing: 0.5px;
}

.course-modal-content { max-width: 650px; }
.course-detail-header { display: flex; gap: 16px; align-items: center; margin-bottom: 16px; }
.course-detail-icon { font-size: 3rem; }
.course-detail-header h2 { font-size: 1.4rem; margin-bottom: 4px; }
.course-detail-subtitle { color: var(--text-secondary); font-size: 14px; }
.course-detail-meta {
  display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 20px;
}
.course-detail-meta span {
  padding: 4px 12px; background: rgba(30,41,59,0.5); border-radius: 8px;
  font-size: 12px; color: #94a3b8;
}
.course-detail-desc { color: var(--text-secondary); line-height: 1.7; margin-bottom: 20px; font-size: 14px; }
.course-topics, .course-outcomes {
  list-style: none; padding: 0; margin-bottom: 20px;
}
.course-topics li, .course-outcomes li {
  padding: 6px 0; font-size: 13px; color: var(--text-secondary);
}
.course-topics li::before { content: '✓ '; color: #5eead4; font-weight: 700; }
.course-outcomes li::before { content: '🎯 '; }
.course-detail-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--card-border); }
.course-detail-price { font-size: 1.5rem; font-weight: 800; color: #5eead4; }
.course-waitlist-btn {
  padding: 12px 32px; border-radius: 12px; font-weight: 700; font-size: 15px;
  color: white; border: none; cursor: pointer;
  background: linear-gradient(135deg, #5eead4 0%, #00d2ff 100%);
  transition: all 0.2s;
}
.course-waitlist-btn:hover { transform: scale(1.05); box-shadow: 0 4px 15px rgba(94,234,212,0.3); }

/* ====== CHALLENGES ====== */
.challenges-container { max-width: 1000px; margin: 0 auto; padding: 40px 20px; }
.challenges-header { text-align: center; margin-bottom: 40px; }
.challenges-badge {
  display: inline-block; padding: 4px 16px; border-radius: 20px; font-size: 11px; font-weight: 700;
  letter-spacing: 1.5px; background: linear-gradient(135deg, rgba(251,191,36,0.15), rgba(249,115,22,0.15));
  color: #fbbf24; border: 1px solid rgba(251,191,36,0.2); margin-bottom: 12px;
}
.challenges-header h2 { font-size: 2rem; font-weight: 800; margin-bottom: 8px; }
.challenges-header p { color: var(--text-muted); font-size: 1.05rem; }
.challenges-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px; }

.challenge-card {
  background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 16px;
  padding: 24px; transition: all 0.3s; display: flex; gap: 16px;
}
.challenge-card:hover { border-color: rgba(251,191,36,0.3); }
.challenge-joined { border-color: rgba(94,234,212,0.3); background: rgba(94,234,212,0.03); }
.challenge-icon { font-size: 2.5rem; flex-shrink: 0; }
.challenge-info { flex: 1; }
.challenge-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 6px; color: var(--text-primary); }
.challenge-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.5; margin-bottom: 10px; }
.challenge-meta {
  display: flex; gap: 10px; font-size: 12px; color: #94a3b8; margin-bottom: 8px; flex-wrap: wrap;
}
.challenge-rewards {
  font-size: 12px; color: #fbbf24; font-weight: 600; margin-bottom: 10px;
  padding: 4px 10px; background: rgba(251,191,36,0.08); border-radius: 8px; display: inline-block;
}
.challenge-tasks { margin-bottom: 14px; }
.challenge-tasks strong { font-size: 12px; color: #64748b; text-transform: uppercase; letter-spacing: 0.5px; }
.challenge-tasks ul { list-style: none; padding: 0; margin: 6px 0 0; }
.challenge-tasks li {
  font-size: 12px; color: var(--text-secondary); padding: 2px 0;
}
.challenge-tasks li::before { content: '• '; color: #5eead4; }

.challenge-join-btn {
  padding: 10px 24px; border-radius: 10px; font-weight: 700; font-size: 13px;
  color: #0f172a; border: none; cursor: pointer;
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  transition: all 0.2s; width: 100%;
}
.challenge-join-btn:hover { transform: scale(1.02); box-shadow: 0 4px 15px rgba(251,191,36,0.3); }
.challenge-joined-btn {
  background: linear-gradient(135deg, #5eead4 0%, #14b8a6 100%); color: #0f172a;
}

/* ====== CORPORATE WELLNESS ====== */
.corporate-container { max-width: 1100px; margin: 0 auto; padding: 40px 20px; }
.corporate-hero { text-align: center; margin-bottom: 40px; }
.corporate-badge {
  display: inline-block; padding: 4px 16px; border-radius: 20px; font-size: 11px; font-weight: 700;
  letter-spacing: 1.5px; background: linear-gradient(135deg, rgba(99,102,241,0.15), rgba(139,92,246,0.15));
  color: #818cf8; border: 1px solid rgba(99,102,241,0.2); margin-bottom: 12px;
}
.corporate-hero h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 8px; }
.corporate-hero p { color: var(--text-muted); font-size: 1.1rem; }

.corporate-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 48px;
}
.corporate-stat {
  text-align: center; padding: 24px 16px; background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: 16px;
}
.corporate-stat-icon { font-size: 2rem; display: block; margin-bottom: 8px; }
.corporate-stat-value { font-size: 2rem; font-weight: 800; color: #5eead4; display: block; margin-bottom: 4px; }
.corporate-stat-label { font-size: 13px; color: var(--text-secondary); }

.corporate-benefits { margin-bottom: 48px; }
.corporate-benefits h3 { text-align: center; font-size: 1.4rem; margin-bottom: 24px; }
.corporate-benefits-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px;
}
.corporate-benefit {
  padding: 24px; background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: 16px; transition: all 0.3s;
}
.corporate-benefit:hover { border-color: rgba(99,102,241,0.3); }
.corporate-benefit-icon { font-size: 2rem; display: block; margin-bottom: 12px; }
.corporate-benefit h4 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; color: var(--text-primary); }
.corporate-benefit p { font-size: 13px; color: var(--text-secondary); line-height: 1.5; }

.corporate-tiers-section { margin-bottom: 48px; }
.corporate-tiers-section h3 { text-align: center; font-size: 1.4rem; margin-bottom: 24px; }
.corporate-tiers {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.corporate-tier {
  padding: 28px; background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: 16px; text-align: center; position: relative;
}
.corporate-tier-highlight {
  border-color: rgba(99,102,241,0.4); background: rgba(99,102,241,0.03);
  box-shadow: 0 0 30px rgba(99,102,241,0.1);
}
.corporate-tier-name { font-size: 1.3rem; font-weight: 800; margin-bottom: 8px; }
.corporate-tier-price { font-size: 1.1rem; font-weight: 700; color: #5eead4; margin-bottom: 4px; }
.corporate-tier-employees { font-size: 12px; color: #64748b; margin-bottom: 16px; }
.corporate-tier-features { list-style: none; padding: 0; text-align: left; margin-bottom: 20px; }
.corporate-tier-features li {
  padding: 6px 0; font-size: 13px; color: var(--text-secondary); border-bottom: 1px solid rgba(30,41,59,0.3);
}
.corporate-tier-features li::before { content: '✓ '; color: #5eead4; font-weight: 700; }
.corporate-cta-btn {
  padding: 12px 28px; border-radius: 12px; font-weight: 700; font-size: 14px;
  color: white; border: none; cursor: pointer;
  background: linear-gradient(135deg, #818cf8 0%, #6366f1 100%);
  transition: all 0.2s; width: 100%;
}
.corporate-cta-btn:hover { transform: scale(1.02); box-shadow: 0 4px 15px rgba(99,102,241,0.3); }

.corporate-testimonials { margin-bottom: 48px; }
.corporate-testimonials h3 { text-align: center; font-size: 1.4rem; margin-bottom: 24px; }
.testimonials-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.testimonial-card {
  padding: 24px; background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: 16px; position: relative;
}
.testimonial-quote {
  font-size: 14px; color: var(--text-secondary); line-height: 1.6; font-style: italic; margin-bottom: 16px;
}
.testimonial-source strong { display: block; font-size: 13px; color: var(--text-primary); }
.testimonial-source span { font-size: 12px; color: #64748b; }

.corporate-contact { text-align: center; margin-bottom: 40px; }
.corporate-contact h3 { font-size: 1.4rem; margin-bottom: 8px; }
.corporate-contact > p { color: var(--text-muted); margin-bottom: 24px; }
.corporate-form { max-width: 600px; margin: 0 auto; text-align: left; }
.corporate-form .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
.corporate-form input, .corporate-form textarea {
  width: 100%; padding: 12px 16px; border-radius: 10px; border: 1px solid #1e293b;
  background: rgba(15,23,42,0.6); color: var(--text-primary); font-size: 14px; font-family: inherit;
}
.corporate-form input:focus, .corporate-form textarea:focus { border-color: #818cf8; outline: none; }
.corporate-form textarea { margin-bottom: 16px; resize: vertical; }
.corporate-submit-btn {
  padding: 14px 40px; border-radius: 12px; font-weight: 700; font-size: 15px;
  color: white; border: none; cursor: pointer; width: 100%;
  background: linear-gradient(135deg, #818cf8 0%, #6366f1 100%);
  transition: all 0.2s;
}
.corporate-submit-btn:hover { transform: scale(1.02); box-shadow: 0 4px 15px rgba(99,102,241,0.3); }

/* Membership tier description */
.tier-desc {
  padding: 8px 16px; font-size: 12px; color: #94a3b8; text-align: center;
  font-weight: 500; font-style: italic;
}

@media (max-width: 768px) {
  .corporate-stats { grid-template-columns: repeat(2, 1fr); }
  .corporate-tiers { grid-template-columns: 1fr; }
  .corporate-form .form-row { grid-template-columns: 1fr; }
  .featured-grid { grid-template-columns: 1fr; }
  .marketplace-grid { grid-template-columns: 1fr; }
  .courses-grid { grid-template-columns: 1fr; }
  .challenges-grid { grid-template-columns: 1fr; }
  .product-card { flex-direction: column; }
  .course-card { flex-direction: column; }
  .challenge-card { flex-direction: column; }
}