@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Poppins:wght@600;700;800&display=swap');

:root {
  
  --color-primary: #0066cc;
  --color-primary-dark: #0052a3;
  --color-primary-light: #e6f0ff;
  
  
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;
  
  
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8f9fa;
  --color-bg-tertiary: #f0f4f8;
  --color-bg-dark: #0a0e27;
  --color-bg-accent: #e6f0ff;
  
  
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #4a5568;
  --color-text-light: #e0e0e0;
  --color-text-lighter: #f8f9fa;
  
  
  --color-border: #e5e7eb;
  --color-border-light: #f3f4f6;
  --color-divider: #d1d5db;
  
  
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  
  
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 2.5rem;
  --spacing-3xl: 3rem;
  --spacing-4xl: 4rem;
  --spacing-5xl: 5rem;
  --spacing-6xl: 6rem;
  
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  --radius-full: 9999px;
  
  
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --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);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  
  --icon-sm: 1.25rem;
  --icon-md: 1.5rem;
  --icon-lg: 2rem;
  --icon-xl: 2.5rem;
  --icon-2xl: 3rem;
  --icon-3xl: 3.5rem;
  
  
  --transition-fast: 150ms ease-in-out;
  --transition-base: 200ms ease-in-out;
  --transition-slow: 300ms ease-in-out;
  
  
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-bg: 400;
  --z-modal: 500;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  letter-spacing: -0.3px;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  letter-spacing: -0.5px;
}

h1 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-extrabold);
}

h2 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
}

h3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
}

h4 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
}

h5 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
}

h6 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
}

p {
  line-height: 1.7;
  letter-spacing: -0.2px;
}

a {
  text-decoration: none;
  transition: all var(--transition-base);
}

.container {
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-2xl);
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
  border: 2px solid transparent;
  gap: var(--spacing-sm);
}

@media (min-width: 768px) {
  .btn {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
  }
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-lighter);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  background-color: var(--color-bg-tertiary);
  border-color: var(--color-divider);
  transform: translateY(-2px);
}

.btn-success {
  background-color: var(--color-success);
  color: var(--color-text-lighter);
  border-color: var(--color-success);
}

.btn-success:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
}

input,
textarea,
select {
  width: 100%;
  padding: var(--spacing-md);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

.form-submit-btn {
  background-color: var(--color-primary);
  color: var(--color-text-lighter);
  border: 2px solid var(--color-primary);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  width: 100%;
}

.form-submit-btn:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.form-submit-btn:active {
  transform: translateY(0);
}

.card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

@media (min-width: 768px) {
  .card {
    padding: var(--spacing-xl);
    gap: var(--spacing-lg);
  }
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-primary-light);
}

.card-icon {
  font-size: var(--icon-2xl);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background-color: var(--color-primary-light);
  border-radius: var(--radius-lg);
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
}

.card-text {
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

@media (min-width: 768px) {
  .grid {
    gap: var(--spacing-xl);
  }
}

@media (min-width: 1024px) {
  .grid {
    gap: var(--spacing-2xl);
  }
}

.grid-2 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.grid-3 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.grid-4 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.flex {
  display: flex;
  flex-direction: row;
}

.flex-col {
  display: flex;
  flex-direction: column;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: row;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-direction: row;
}

.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }
.gap-2xl { gap: var(--spacing-2xl); }

section {
  overflow: hidden;
  width: 100%;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-primary {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.badge-success {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
}

.badge-warning {
  background-color: rgba(245, 158, 11, 0.1);
  color: var(--color-warning);
}

.divider {
  height: 1px;
  background-color: var(--color-border);
  margin: var(--spacing-xl) 0;
}

.icon-xs {
  font-size: var(--icon-sm);
  width: var(--icon-sm);
  height: var(--icon-sm);
}

.icon-sm {
  font-size: 1.5rem;
  width: 1.5rem;
  height: 1.5rem;
}

.icon-md {
  font-size: var(--icon-md);
  width: var(--icon-md);
  height: var(--icon-md);
}

.icon-lg {
  font-size: var(--icon-lg);
  width: var(--icon-lg);
  height: var(--icon-lg);
}

.icon-xl {
  font-size: var(--icon-xl);
  width: var(--icon-xl);
  height: var(--icon-xl);
}

.icon-2xl {
  font-size: var(--icon-2xl);
  width: var(--icon-2xl);
  height: var(--icon-2xl);
}

.icon-3xl {
  font-size: var(--icon-3xl);
  width: var(--icon-3xl);
  height: var(--icon-3xl);
}

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.text-justify {
  text-align: justify;
}

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

.text-light {
  color: var(--color-text-light);
}

.font-bold {
  font-weight: var(--font-weight-bold);
}

.font-semibold {
  font-weight: var(--font-weight-semibold);
}

.font-medium {
  font-weight: var(--font-weight-medium);
}

.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mt-2xl { margin-top: var(--spacing-2xl); }

.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.mb-2xl { margin-bottom: var(--spacing-2xl); }

.my-xs { margin-top: var(--spacing-xs); margin-bottom: var(--spacing-xs); }
.my-sm { margin-top: var(--spacing-sm); margin-bottom: var(--spacing-sm); }
.my-md { margin-top: var(--spacing-md); margin-bottom: var(--spacing-md); }
.my-lg { margin-top: var(--spacing-lg); margin-bottom: var(--spacing-lg); }
.my-xl { margin-top: var(--spacing-xl); margin-bottom: var(--spacing-xl); }

.px-md { padding-left: var(--spacing-md); padding-right: var(--spacing-md); }
.px-lg { padding-left: var(--spacing-lg); padding-right: var(--spacing-lg); }
.px-xl { padding-left: var(--spacing-xl); padding-right: var(--spacing-xl); }

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

a.link-primary {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

a.link-primary:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

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

a.link-secondary:hover {
  color: var(--color-text-primary);
  text-decoration: underline;
}

ul, ol {
  padding-left: var(--spacing-lg);
}

li {
  margin-bottom: var(--spacing-sm);
  line-height: 1.8;
}

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

.header-mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: var(--icon-lg);
  cursor: pointer;
  padding: var(--spacing-md);
  transition: all var(--transition-base);
}

.header-mobile-toggle:hover {
  color: var(--color-primary);
}

@media (max-width: 767px) {
  .header-mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

.cookie-banner {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

@media (min-width: 768px) {
  .cookie-banner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
  }
}

.cookie-banner-text {
  flex: 1;
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.cookie-banner-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

@media (min-width: 768px) {
  .cookie-banner-actions {
    flex-wrap: nowrap;
  }
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: var(--spacing-md);
  z-index: var(--z-fixed);
  text-decoration: none;
}

.skip-link:focus {
  top: 0;
}

@media (max-width: 767px) {
  h1 {
    font-size: var(--font-size-2xl);
  }
  
  h2 {
    font-size: var(--font-size-xl);
  }
  
  h3 {
    font-size: var(--font-size-lg);
  }
  
  h4 {
    font-size: var(--font-size-base);
  }
  
  p {
    font-size: var(--font-size-sm);
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  h1 {
    font-size: var(--font-size-3xl);
  }
  
  h2 {
    font-size: var(--font-size-2xl);
  }
  
  h3 {
    font-size: var(--font-size-xl);
  }
}

@media (min-width: 1024px) {
  h1 {
    font-size: var(--font-size-4xl);
  }
  
  h2 {
    font-size: var(--font-size-3xl);
  }
  
  h3 {
    font-size: var(--font-size-2xl);
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.animate-in {
  animation: slideInUp 0.6s ease-out;
}

.animate-fade {
  animation: fadeIn 0.6s ease-out;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Poppins:wght@600;700;800&display=swap');

  :root {
    --color-primary: #0066cc;
    --color-primary-dark: #0052a3;
    --color-primary-light: #e6f0ff;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-tertiary: #f0f4f8;
    --color-bg-dark: #0a0e27;
    --color-bg-accent: #e6f0ff;
    --color-text-primary: #1a1a1a;
    --color-text-secondary: #4a5568;
    --color-text-light: #e0e0e0;
    --color-text-lighter: #f8f9fa;
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;
    --color-divider: #d1d5db;
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
    --spacing-3xl: 3rem;
    --spacing-4xl: 4rem;
    --spacing-5xl: 5rem;
    --spacing-6xl: 6rem;
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-full: 9999px;
    --icon-sm: 1.25rem;
    --icon-md: 1.5rem;
    --icon-lg: 2rem;
    --icon-xl: 2.5rem;
    --icon-2xl: 3rem;
    --icon-3xl: 3.5rem;
    --transition-fast: 150ms ease-in-out;
    --transition-base: 200ms ease-in-out;
    --transition-slow: 300ms ease-in-out;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-bg: 400;
    --z-modal: 500;
  }

  
  .header-excel-academy {
    background-color: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
    position: relative;
    z-index: var(--z-sticky);
    box-shadow: var(--shadow-sm);
  }

  .header-excel-academy-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-md);
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
  }

  @media (min-width: 768px) {
    .header-excel-academy-container {
      padding: var(--spacing-lg) var(--spacing-xl);
    }
  }

  @media (min-width: 1024px) {
    .header-excel-academy-container {
      padding: var(--spacing-lg) var(--spacing-2xl);
    }
  }

  
  .header-excel-academy-logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
  }

  .header-excel-academy-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    font-family: var(--font-display);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    transition: all var(--transition-base);
  }

  .header-excel-academy-brand:hover {
    color: var(--color-primary-dark);
    transform: translateY(-2px);
  }

  .header-excel-academy-brand:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-md);
  }

  .header-excel-academy-brand i {
    font-size: var(--icon-lg);
    display: flex;
    align-items: center;
  }

  .header-excel-academy-brand span {
    display: none;
  }

  @media (min-width: 768px) {
    .header-excel-academy-brand span {
      display: inline;
    }

    .header-excel-academy-brand {
      font-size: var(--font-size-xl);
    }
  }

  
  .header-excel-academy-desktop-nav {
    display: none;
    flex-direction: row;
    gap: var(--spacing-xl);
    flex-grow: 1;
    justify-content: center;
  }

  @media (min-width: 1024px) {
    .header-excel-academy-desktop-nav {
      display: flex;
    }
  }

  .header-excel-academy-nav-link {
    text-decoration: none;
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-base);
    position: relative;
    padding-bottom: 2px;
  }

  .header-excel-academy-nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-base);
  }

  .header-excel-academy-nav-link:hover {
    color: var(--color-primary);
  }

  .header-excel-academy-nav-link:hover::after {
    width: 100%;
  }

  .header-excel-academy-nav-link:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 4px;
    border-radius: var(--radius-sm);
  }

  
  .header-excel-academy-cta-button {
    display: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-primary);
    color: #000000;
    text-decoration: none;
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    white-space: nowrap;
    flex-shrink: 0;
  }

  @media (min-width: 1024px) {
    .header-excel-academy-cta-button {
      display: inline-block;
      padding: var(--spacing-md) var(--spacing-xl);
      font-size: var(--font-size-base);
    }
  }

  .header-excel-academy-cta-button:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
  }

  .header-excel-academy-cta-button:focus {
    outline: 2px solid #000000;
    outline-offset: 2px;
  }

  .header-excel-academy-cta-button:active {
    transform: translateY(0);
  }

  
  .header-excel-academy-mobile-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    background-color: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
    transition: all var(--transition-base);
  }

  @media (min-width: 1024px) {
    .header-excel-academy-mobile-toggle {
      display: none;
    }
  }

  .header-excel-academy-mobile-toggle span {
    width: 24px;
    height: 3px;
    background-color: var(--color-primary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    transform-origin: center;
  }

  .header-excel-academy-mobile-toggle:hover span {
    background-color: var(--color-primary-dark);
  }

  .header-excel-academy-mobile-toggle:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-md);
  }

  .header-excel-academy-mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(11px, 11px);
  }

  .header-excel-academy-mobile-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .header-excel-academy-mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(9px, -9px);
  }

  
  .header-excel-academy-mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    max-width: 320px;
    height: 100vh;
    background-color: var(--color-bg-primary);
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transform: translateX(100%);
    transition: all var(--transition-slow);
    z-index: var(--z-modal);
    box-shadow: var(--shadow-2xl);
    overflow-y: auto;
  }

  @media (max-width: 1023px) {
    .header-excel-academy-mobile-menu {
      display: flex;
    }
  }

  .header-excel-academy-mobile-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
  }

  
  .header-excel-academy-mobile-header {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
  }

  .header-excel-academy-mobile-title {
    font-family: var(--font-display);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
  }

  .header-excel-academy-mobile-close {
    width: 40px;
    height: 40px;
    background-color: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: var(--icon-lg);
    transition: all var(--transition-base);
    border-radius: var(--radius-md);
  }

  .header-excel-academy-mobile-close:hover {
    background-color: var(--color-bg-secondary);
    color: var(--color-primary-dark);
  }

  .header-excel-academy-mobile-close:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
  }

  
  .header-excel-academy-mobile-links {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: var(--spacing-md) 0;
    flex-grow: 1;
    overflow-y: auto;
  }

  .header-excel-academy-mobile-link {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--color-text-primary);
    text-decoration: none;
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-base);
    border-left: 3px solid transparent;
  }

  .header-excel-academy-mobile-link:hover {
    background-color: var(--color-bg-secondary);
    color: var(--color-primary);
    border-left-color: var(--color-primary);
    padding-left: calc(var(--spacing-lg) + 2px);
  }

  .header-excel-academy-mobile-link:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: -2px;
  }

  
  .header-excel-academy-mobile-cta {
    display: block;
    margin: var(--spacing-lg) var(--spacing-md) var(--spacing-md) var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--color-primary);
    color: #000000;
    text-decoration: none;
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    text-align: center;
    flex-shrink: 0;
  }

  .header-excel-academy-mobile-cta:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
  }

  .header-excel-academy-mobile-cta:focus {
    outline: 2px solid #000000;
    outline-offset: 2px;
  }

  .header-excel-academy-mobile-cta:active {
    transform: translateY(0);
  }

  
  @media (max-width: 480px) {
    .header-excel-academy-container {
      padding: var(--spacing-sm) var(--spacing-md);
      gap: var(--spacing-md);
    }

    .header-excel-academy-mobile-menu {
      max-width: 100%;
    }

    .header-excel-academy-brand i {
      font-size: var(--icon-md);
    }

    .header-excel-academy-brand {
      font-size: var(--font-size-base);
    }
  }

  
  body.menu-open {
    overflow: hidden;
  }

    
.excel-hub {
  width: 100%;
  overflow-x: hidden;
}

.excel-hub .hero-section {
  background-color: #0a0e27;
  padding: 3rem 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .excel-hub .hero-section {
    padding: 5rem 0;
  }
}

@media (min-width: 1024px) {
  .excel-hub .hero-section {
    padding: 6rem 0;
  }
}

.excel-hub .hero-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 1024px) {
  .excel-hub .hero-content {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }
}

.excel-hub .hero-text h1 {
  color: #ffffff;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.excel-hub .hero-text p {
  color: #e0e0e0;
  font-size: 1rem;
  margin-bottom: 2rem;
  line-height: 1.7;
}

@media (max-width: 767px) {
  .excel-hub .hero-text h1 {
    font-size: 2rem;
  }
  
  .excel-hub .hero-text p {
    font-size: 0.875rem;
  }
}

.excel-hub .hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .excel-hub .hero-buttons {
    gap: 1.5rem;
    margin-bottom: 3rem;
  }
}

.excel-hub .hero-buttons .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.excel-hub .hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

@media (min-width: 768px) {
  .excel-hub .hero-stats {
    gap: 2rem;
  }
}

.excel-hub .stat-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.excel-hub .stat-number {
  font-size: 1.5rem;
  font-weight: 800;
  color: #0066cc;
}

@media (min-width: 768px) {
  .excel-hub .stat-number {
    font-size: 2rem;
  }
}

.excel-hub .stat-label {
  font-size: 0.875rem;
  color: #b0b0b0;
}

.excel-hub .hero-image {
  display: flex;
  align-items: center;
  justify-content: center;
}

.excel-hub .hero-image img {
  width: 100%;
  height: auto;
  max-height: 400px;
  object-fit: cover;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 102, 204, 0.2);
}

.excel-hub .features-section {
  background-color: #f8f9fa;
  padding: 3rem 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .excel-hub .features-section {
    padding: 5rem 0;
  }
}

@media (min-width: 1024px) {
  .excel-hub .features-section {
    padding: 6rem 0;
  }
}

.excel-hub .features-header {
  text-align: center;
  margin-bottom: 3rem;
}

@media (min-width: 768px) {
  .excel-hub .features-header {
    margin-bottom: 4rem;
  }
}

.excel-hub .features-header h2 {
  color: #1a1a1a;
  margin-bottom: 1rem;
}

.excel-hub .features-header p {
  color: #4a5568;
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}

.excel-hub .features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .excel-hub .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
}

@media (min-width: 1024px) {
  .excel-hub .features-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
}

.excel-hub .feature-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.5rem;
  background-color: #ffffff;
  border-radius: 12px;
  border: 1px solid #e5e7eb;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease-in-out;
}

@media (min-width: 768px) {
  .excel-hub .feature-card {
    padding: 2rem;
    gap: 1.5rem;
  }
}

.excel-hub .feature-card:hover {
  box-shadow: 0 8px 24px rgba(0, 102, 204, 0.1);
  transform: translateY(-4px);
  border-color: #0066cc;
}

.excel-hub .feature-icon {
  width: 3.5rem;
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #e6f0ff;
  border-radius: 10px;
  font-size: 1.75rem;
  color: #0066cc;
}

.excel-hub .feature-card h3 {
  color: #1a1a1a;
  font-size: 1.25rem;
}

@media (min-width: 768px) {
  .excel-hub .feature-card h3 {
    font-size: 1.5rem;
  }
}

.excel-hub .feature-card p {
  color: #4a5568;
  font-size: 0.9rem;
  line-height: 1.6;
}

.excel-hub .featured-section {
  background-color: #ffffff;
  padding: 3rem 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .excel-hub .featured-section {
    padding: 5rem 0;
  }
}

@media (min-width: 1024px) {
  .excel-hub .featured-section {
    padding: 6rem 0;
  }
}

.excel-hub .featured-header {
  text-align: center;
  margin-bottom: 3rem;
}

@media (min-width: 768px) {
  .excel-hub .featured-header {
    margin-bottom: 4rem;
  }
}

.excel-hub .featured-header h2 {
  color: #1a1a1a;
  margin-bottom: 1rem;
}

.excel-hub .featured-header p {
  color: #4a5568;
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}

.excel-hub .featured-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .excel-hub .featured-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
  }
}

@media (min-width: 1024px) {
  .excel-hub .featured-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
    margin-bottom: 3rem;
  }
}

.excel-hub .featured-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background-color: #f8f9fa;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid #e5e7eb;
  transition: all 0.3s ease-in-out;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.excel-hub .featured-card:hover {
  box-shadow: 0 8px 24px rgba(0, 102, 204, 0.1);
  transform: translateY(-4px);
  border-color: #0066cc;
}

.excel-hub .featured-image-wrapper {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background-color: #e5e7eb;
}

.excel-hub .featured-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease-in-out;
}

.excel-hub .featured-card:hover .featured-image {
  transform: scale(1.05);
}

.excel-hub .featured-card-content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.5rem;
}

@media (min-width: 768px) {
  .excel-hub .featured-card-content {
    padding: 2rem;
    gap: 1.5rem;
  }
}

.excel-hub .featured-card h3 {
  color: #1a1a1a;
  font-size: 1.25rem;
  line-height: 1.3;
}

@media (min-width: 768px) {
  .excel-hub .featured-card h3 {
    font-size: 1.5rem;
  }
}

.excel-hub .featured-card p {
  color: #4a5568;
  font-size: 0.9rem;
  line-height: 1.6;
  flex-grow: 1;
}

.excel-hub .featured-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: #0066cc;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease-in-out;
}

.excel-hub .featured-link:hover {
  gap: 1rem;
  color: #0052a3;
}

.excel-hub .featured-cta {
  text-align: center;
  padding-top: 1rem;
}

.excel-hub .how-it-works-section {
  background-color: #f0f4f8;
  padding: 3rem 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .excel-hub .how-it-works-section {
    padding: 5rem 0;
  }
}

@media (min-width: 1024px) {
  .excel-hub .how-it-works-section {
    padding: 6rem 0;
  }
}

.excel-hub .how-it-works-header {
  text-align: center;
  margin-bottom: 3rem;
}

@media (min-width: 768px) {
  .excel-hub .how-it-works-header {
    margin-bottom: 4rem;
  }
}

.excel-hub .how-it-works-header h2 {
  color: #1a1a1a;
  margin-bottom: 1rem;
}

.excel-hub .how-it-works-header p {
  color: #4a5568;
  font-size: 1.125rem;
}

.excel-hub .steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .excel-hub .steps-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
  }
}

@media (min-width: 1024px) {
  .excel-hub .steps-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
  }
}

.excel-hub .step-item {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: center;
  padding: 1.5rem;
  background-color: #ffffff;
  border-radius: 12px;
  border: 2px solid #e5e7eb;
  transition: all 0.3s ease-in-out;
}

@media (min-width: 768px) {
  .excel-hub .step-item {
    padding: 2rem;
  }
}

.excel-hub .step-item:hover {
  border-color: #0066cc;
  box-shadow: 0 4px 16px rgba(0, 102, 204, 0.1);
}

.excel-hub .step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background-color: #0066cc;
  color: #ffffff;
  border-radius: 50%;
  font-size: 1.5rem;
  font-weight: 800;
  margin: 0 auto;
}

.excel-hub .step-item h3 {
  color: #1a1a1a;
  font-size: 1.25rem;
}

.excel-hub .step-item p {
  color: #4a5568;
  font-size: 0.9rem;
  line-height: 1.6;
}

.excel-hub .skills-section {
  background-color: #ffffff;
  padding: 3rem 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .excel-hub .skills-section {
    padding: 5rem 0;
  }
}

@media (min-width: 1024px) {
  .excel-hub .skills-section {
    padding: 6rem 0;
  }
}

.excel-hub .skills-header {
  text-align: center;
  margin-bottom: 3rem;
}

@media (min-width: 768px) {
  .excel-hub .skills-header {
    margin-bottom: 4rem;
  }
}

.excel-hub .skills-header h2 {
  color: #1a1a1a;
  margin-bottom: 1rem;
}

.excel-hub .skills-header p {
  color: #4a5568;
  font-size: 1.125rem;
}

.excel-hub .skills-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .excel-hub .skills-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
  }
}

.excel-hub .skill-group h3 {
  color: #0066cc;
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
}

.excel-hub .skill-group ul {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-left: 0;
  list-style: none;
}

.excel-hub .skill-group li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  color: #1a1a1a;
  font-size: 0.95rem;
  margin-bottom: 0;
  line-height: 1.6;
}

.excel-hub .skill-group i {
  color: #10b981;
  margin-top: 0.2rem;
  flex-shrink: 0;
}

.excel-hub .testimonials-section {
  background-color: #f8f9fa;
  padding: 3rem 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .excel-hub .testimonials-section {
    padding: 5rem 0;
  }
}

@media (min-width: 1024px) {
  .excel-hub .testimonials-section {
    padding: 6rem 0;
  }
}

.excel-hub .testimonials-header {
  text-align: center;
  margin-bottom: 3rem;
}

@media (min-width: 768px) {
  .excel-hub .testimonials-header {
    margin-bottom: 4rem;
  }
}

.excel-hub .testimonials-header h2 {
  color: #1a1a1a;
  margin-bottom: 1rem;
}

.excel-hub .testimonials-header p {
  color: #4a5568;
  font-size: 1.125rem;
}

.excel-hub .testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .excel-hub .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
}

@media (min-width: 1024px) {
  .excel-hub .testimonials-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
}

.excel-hub .testimonial-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 2rem;
  background-color: #ffffff;
  border-radius: 12px;
  border: 1px solid #e5e7eb;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease-in-out;
}

.excel-hub .testimonial-card:hover {
  box-shadow: 0 8px 24px rgba(0, 102, 204, 0.1);
  transform: translateY(-4px);
}

.excel-hub .testimonial-rating {
  display: flex;
  gap: 0.25rem;
  color: #f59e0b;
  font-size: 0.9rem;
}

.excel-hub .testimonial-text {
  color: #1a1a1a;
  font-size: 0.95rem;
  line-height: 1.7;
  font-style: italic;
  flex-grow: 1;
}

.excel-hub .testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px solid #e5e7eb;
}

.excel-hub .author-info h4 {
  color: #1a1a1a;
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.excel-hub .author-info p {
  color: #4a5568;
  font-size: 0.85rem;
  margin: 0;
}

.excel-hub .why-us-section {
  background-color: #0a0e27;
  padding: 3rem 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .excel-hub .why-us-section {
    padding: 5rem 0;
  }
}

@media (min-width: 1024px) {
  .excel-hub .why-us-section {
    padding: 6rem 0;
  }
}

.excel-hub .why-us-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 1024px) {
  .excel-hub .why-us-content {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }
}

.excel-hub .why-us-text h2 {
  color: #ffffff;
  margin-bottom: 1.5rem;
}

.excel-hub .why-us-text > p {
  color: #e0e0e0;
  font-size: 1rem;
  margin-bottom: 2rem;
  line-height: 1.7;
}

@media (min-width: 768px) {
  .excel-hub .why-us-text > p {
    font-size: 1.125rem;
  }
}

.excel-hub .why-us-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  list-style: none;
  padding-left: 0;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .excel-hub .why-us-list {
    gap: 1.5rem;
    margin-bottom: 2.5rem;
  }
}

.excel-hub .why-us-list li {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  color: #e0e0e0;
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 0;
}

.excel-hub .why-us-list i {
  color: #10b981;
  margin-top: 0.3rem;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.excel-hub .why-us-image img {
  width: 100%;
  height: auto;
  max-height: 400px;
  object-fit: cover;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.excel-hub .contact-section {
  background-color: #f8f9fa;
  padding: 3rem 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .excel-hub .contact-section {
    padding: 5rem 0;
  }
}

@media (min-width: 1024px) {
  .excel-hub .contact-section {
    padding: 6rem 0;
  }
}

.excel-hub .contact-header {
  text-align: center;
  margin-bottom: 3rem;
}

@media (min-width: 768px) {
  .excel-hub .contact-header {
    margin-bottom: 4rem;
  }
}

.excel-hub .contact-header h2 {
  color: #1a1a1a;
  margin-bottom: 1rem;
}

.excel-hub .contact-header p {
  color: #4a5568;
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}

.excel-hub .contact-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 1024px) {
  .excel-hub .contact-wrapper {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
  }
}

.excel-hub .contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.excel-hub .contact-form .form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 0;
}

.excel-hub .contact-form label {
  color: #1a1a1a;
  font-weight: 600;
  font-size: 0.95rem;
}

.excel-hub .contact-form input,
.excel-hub .contact-form select,
.excel-hub .contact-form textarea {
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  background-color: #ffffff;
  color: #1a1a1a;
  transition: all 0.3s ease-in-out;
}

.excel-hub .contact-form input:focus,
.excel-hub .contact-form select:focus,
.excel-hub .contact-form textarea:focus {
  outline: none;
  border-color: #0066cc;
  box-shadow: 0 0 0 3px #e6f0ff;
  background-color: #ffffff;
}

.excel-hub .contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

.excel-hub .form-privacy {
  text-align: center;
  font-size: 0.85rem;
  color: #4a5568;
}

.excel-hub .privacy-link {
  color: #0066cc;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease-in-out;
}

.excel-hub .privacy-link:hover {
  color: #0052a3;
  text-decoration: underline;
}

.excel-hub .form-submit-btn {
  background-color: #0066cc;
  color: #ffffff;
  border: 2px solid #0066cc;
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease-in-out;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: 100%;
}

.excel-hub .form-submit-btn:hover {
  background-color: #0052a3;
  border-color: #0052a3;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3);
}

.excel-hub .form-submit-btn:active {
  transform: translateY(0);
}

.excel-hub .contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .excel-hub .contact-info {
    gap: 2rem;
  }
}

.excel-hub .contact-info-box {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.5rem;
  background-color: #ffffff;
  border-radius: 12px;
  border: 1px solid #e5e7eb;
  text-align: center;
}

@media (min-width: 768px) {
  .excel-hub .contact-info-box {
    padding: 2rem;
    gap: 1rem;
  }
}

.excel-hub .contact-info-box i {
  font-size: 2rem;
  color: #0066cc;
}

.excel-hub .contact-info-box h3 {
  color: #1a1a1a;
  font-size: 1.125rem;
}

.excel-hub .contact-info-box p {
  color: #4a5568;
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0;
}

.excel-hub .cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: #1a1a1a;
  color: #e0e0e0;
  padding: 1.5rem;
  z-index: 1000;
  border-top: 1px solid #333333;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  animation: slideInUp 0.4s ease-out;
}

@media (min-width: 768px) {
  .excel-hub .cookie-banner {
    padding: 1.5rem 2rem;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
  }
}

.excel-hub .cookie-banner-text {
  flex: 1;
  font-size: 0.9rem;
  line-height: 1.6;
}

.excel-hub .cookie-banner-text p {
  margin: 0;
  color: #e0e0e0;
}

.excel-hub .cookie-banner-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

@media (min-width: 768px) {
  .excel-hub .cookie-banner-actions {
    flex-wrap: nowrap;
    gap: 1rem;
  }
}

.excel-hub .cookie-accept,
.excel-hub .cookie-decline {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease-in-out;
  font-size: 0.9rem;
}

.excel-hub .cookie-accept {
  background-color: #0066cc;
  color: #ffffff;
  border: 2px solid #0066cc;
}

.excel-hub .cookie-accept:hover {
  background-color: #0052a3;
  border-color: #0052a3;
  transform: translateY(-2px);
}

.excel-hub .cookie-decline {
  background-color: transparent;
  color: #e0e0e0;
  border: 2px solid #666666;
}

.excel-hub .cookie-decline:hover {
  background-color: #333333;
  border-color: #e0e0e0;
}

.excel-hub .cookie-banner.hidden {
  display: none;
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 767px) {
  .excel-hub h1 {
    font-size: 2rem;
  }
  
  .excel-hub h2 {
    font-size: 1.75rem;
  }
  
  .excel-hub h3 {
    font-size: 1.25rem;
  }
  
  .excel-hub p {
    font-size: 0.875rem;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .excel-hub h1 {
    font-size: 2.5rem;
  }
  
  .excel-hub h2 {
    font-size: 2rem;
  }
  
  .excel-hub h3 {
    font-size: 1.5rem;
  }
}

    

.footer {
  background-color: var(--color-bg-dark);
  padding: 3rem 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .footer {
    padding: 4rem 0;
  }
}

@media (min-width: 1024px) {
  .footer {
    padding: 5rem 0;
  }
}

.footer-content {
  display: block;
  width: 100%;
}

.footer-about {
  display: block;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

@media (min-width: 768px) {
  .footer-about {
    margin-bottom: 2.5rem;
    padding-bottom: 2.5rem;
  }
}

@media (min-width: 1024px) {
  .footer-about {
    margin-bottom: 3rem;
    padding-bottom: 3rem;
  }
}

.footer-about-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  color: #ffffff;
  margin-bottom: 1rem;
  letter-spacing: -0.5px;
}

@media (min-width: 768px) {
  .footer-about-title {
    font-size: 1.75rem;
  }
}

.footer-about-text {
  font-family: var(--font-primary);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-text-light);
  margin: 0;
  max-width: 100%;
}

@media (min-width: 768px) {
  .footer-about-text {
    font-size: 1rem;
    max-width: 90%;
  }
}

@media (min-width: 1024px) {
  .footer-about-text {
    max-width: 100%;
  }
}

.footer-nav {
  display: block;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

@media (min-width: 768px) {
  .footer-nav {
    margin-bottom: 2.5rem;
    padding-bottom: 2.5rem;
  }
}

@media (min-width: 1024px) {
  .footer-nav {
    margin-bottom: 3rem;
    padding-bottom: 3rem;
  }
}

.footer-nav-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: var(--font-weight-semibold);
  color: #ffffff;
  margin: 0 0 1rem 0;
  letter-spacing: -0.3px;
}

@media (min-width: 768px) {
  .footer-nav-title {
    font-size: 1.25rem;
  }
}

.footer-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

@media (min-width: 768px) {
  .footer-nav-list {
    gap: 1rem;
  }
}

.footer-legal {
  display: block;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

@media (min-width: 768px) {
  .footer-legal {
    margin-bottom: 2.5rem;
    padding-bottom: 2.5rem;
  }
}

@media (min-width: 1024px) {
  .footer-legal {
    margin-bottom: 3rem;
    padding-bottom: 3rem;
  }
}

.footer-legal-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: var(--font-weight-semibold);
  color: #ffffff;
  margin: 0 0 1rem 0;
  letter-spacing: -0.3px;
}

@media (min-width: 768px) {
  .footer-legal-title {
    font-size: 1.25rem;
  }
}

.footer-legal-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

@media (min-width: 768px) {
  .footer-legal-list {
    gap: 1rem;
  }
}

.footer-link {
  font-family: var(--font-primary);
  font-size: 0.875rem;
  font-weight: var(--font-weight-regular);
  color: var(--color-text-light);
  text-decoration: none;
  display: inline-block;
  transition: all var(--transition-base);
  position: relative;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
}

@media (min-width: 768px) {
  .footer-link {
    font-size: 0.9375rem;
  }
}

.footer-link:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  transform: translateX(4px);
}

.footer-link:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.footer-copyright {
  display: block;
  padding-top: 1.5rem;
}

@media (min-width: 768px) {
  .footer-copyright {
    padding-top: 2rem;
  }
}

@media (min-width: 1024px) {
  .footer-copyright {
    padding-top: 2.5rem;
  }
}

.footer-copyright-text {
  font-family: var(--font-primary);
  font-size: 0.8125rem;
  font-weight: var(--font-weight-regular);
  color: rgba(255, 255, 255, 0.6);
  text-align: center;
  margin: 0;
  line-height: 1.6;
  letter-spacing: 0.3px;
}

@media (min-width: 768px) {
  .footer-copyright-text {
    font-size: 0.875rem;
  }
}

.footer .container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 768px) {
  .footer .container {
    padding: 0 2rem;
  }
}

@media (min-width: 1024px) {
  .footer .container {
    padding: 0 3rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .footer-link {
    transition: none;
  }

  .footer-link:hover {
    transform: none;
  }
}

.footer-link {
  will-change: color, border-color;
}
    

.category-page-excel-training-nl .category-hero-excel-training-nl {
  background-color: #0a0e27;
  padding: 3rem 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .category-page-excel-training-nl .category-hero-excel-training-nl {
    padding: 5rem 0;
  }
}

@media (min-width: 1024px) {
  .category-page-excel-training-nl .category-hero-excel-training-nl {
    padding: 6rem 0;
  }
}

.category-page-excel-training-nl .hero-content-excel-training-nl {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

@media (min-width: 768px) {
  .category-page-excel-training-nl .hero-content-excel-training-nl {
    gap: var(--spacing-2xl);
  }
}

@media (min-width: 1024px) {
  .category-page-excel-training-nl .hero-content-excel-training-nl {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
  }
}

.category-page-excel-training-nl .hero-text-excel-training-nl {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

@media (min-width: 768px) {
  .category-page-excel-training-nl .hero-text-excel-training-nl {
    gap: var(--spacing-lg);
  }
}

.category-page-excel-training-nl .hero-title-excel-training-nl {
  font-size: var(--font-size-4xl);
  color: #ffffff;
  line-height: 1.2;
  font-weight: var(--font-weight-extrabold);
}

@media (max-width: 767px) {
  .category-page-excel-training-nl .hero-title-excel-training-nl {
    font-size: var(--font-size-2xl);
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .category-page-excel-training-nl .hero-title-excel-training-nl {
    font-size: var(--font-size-3xl);
  }
}

.category-page-excel-training-nl .hero-description-excel-training-nl {
  font-size: var(--font-size-base);
  color: #e0e0e0;
  line-height: 1.8;
}

@media (max-width: 767px) {
  .category-page-excel-training-nl .hero-description-excel-training-nl {
    font-size: var(--font-size-sm);
  }
}

.category-page-excel-training-nl .hero-visual-excel-training-nl {
  display: flex;
  justify-content: center;
  align-items: center;
}

.category-page-excel-training-nl .hero-image-excel-training-nl {
  width: 100%;
  max-width: 500px;
  height: auto;
  border-radius: var(--radius-2xl);
  box-shadow: 0 20px 40px rgba(0, 102, 204, 0.2);
}

.category-page-excel-training-nl .posts-grid-section-excel-training-nl {
  background-color: var(--color-bg-secondary);
  padding: 3rem 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .category-page-excel-training-nl .posts-grid-section-excel-training-nl {
    padding: 5rem 0;
  }
}

@media (min-width: 1024px) {
  .category-page-excel-training-nl .posts-grid-section-excel-training-nl {
    padding: 6rem 0;
  }
}

.category-page-excel-training-nl .posts-grid-excel-training-nl {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

@media (min-width: 768px) {
  .category-page-excel-training-nl .posts-grid-excel-training-nl {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
  }
}

@media (min-width: 1024px) {
  .category-page-excel-training-nl .posts-grid-excel-training-nl {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
  }
}

.category-page-excel-training-nl .card-excel-training-nl {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  overflow: hidden;
}

@media (min-width: 768px) {
  .category-page-excel-training-nl .card-excel-training-nl {
    padding: var(--spacing-xl);
    gap: var(--spacing-lg);
  }
}

@media (min-width: 1024px) {
  .category-page-excel-training-nl .card-excel-training-nl {
    padding: var(--spacing-2xl);
    gap: var(--spacing-lg);
  }
}

.category-page-excel-training-nl .card-excel-training-nl:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-8px);
  border-color: var(--color-primary);
}

.category-page-excel-training-nl .card-image-excel-training-nl {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  display: block;
}

.category-page-excel-training-nl .card-title-excel-training-nl {
  font-size: var(--font-size-xl);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-bold);
  line-height: 1.3;
}

@media (max-width: 767px) {
  .category-page-excel-training-nl .card-title-excel-training-nl {
    font-size: var(--font-size-lg);
  }
}

.category-page-excel-training-nl .card-description-excel-training-nl {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.category-page-excel-training-nl .card-link-excel-training-nl {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  border: 2px solid transparent;
  width: fit-content;
  margin-top: auto;
}

@media (min-width: 768px) {
  .category-page-excel-training-nl .card-link-excel-training-nl {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
  }
}

.category-page-excel-training-nl .card-link-excel-training-nl:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
  transform: translateX(4px);
}

.category-page-excel-training-nl .card-link-excel-training-nl::after {
  content: '';
  font-size: 1.1em;
}

.category-page-excel-training-nl .additional-section-1-excel-training-nl {
  background-color: var(--color-bg-primary);
  padding: 3rem 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .category-page-excel-training-nl .additional-section-1-excel-training-nl {
    padding: 5rem 0;
  }
}

@media (min-width: 1024px) {
  .category-page-excel-training-nl .additional-section-1-excel-training-nl {
    padding: 6rem 0;
  }
}

.category-page-excel-training-nl .additional-section-1-excel-training-nl .section-title-excel-training-nl {
  font-size: var(--font-size-3xl);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

@media (max-width: 767px) {
  .category-page-excel-training-nl .additional-section-1-excel-training-nl .section-title-excel-training-nl {
    font-size: var(--font-size-2xl);
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .category-page-excel-training-nl .additional-section-1-excel-training-nl .section-title-excel-training-nl {
    font-size: var(--font-size-2xl);
  }
}

.category-page-excel-training-nl .additional-section-1-excel-training-nl .section-intro-excel-training-nl {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 767px) {
  .category-page-excel-training-nl .additional-section-1-excel-training-nl .section-intro-excel-training-nl {
    font-size: var(--font-size-sm);
  }
}

.category-page-excel-training-nl .skills-grid-excel-training-nl {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

@media (min-width: 768px) {
  .category-page-excel-training-nl .skills-grid-excel-training-nl {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
  }
}

@media (min-width: 1024px) {
  .category-page-excel-training-nl .skills-grid-excel-training-nl {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
  }
}

.category-page-excel-training-nl .skill-item-excel-training-nl {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  padding: var(--spacing-xl);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-primary);
  transition: all var(--transition-base);
}

@media (min-width: 768px) {
  .category-page-excel-training-nl .skill-item-excel-training-nl {
    padding: var(--spacing-lg);
  }
}

.category-page-excel-training-nl .skill-item-excel-training-nl:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.category-page-excel-training-nl .skill-icon-excel-training-nl {
  font-size: var(--icon-2xl);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background-color: var(--color-primary-light);
  border-radius: var(--radius-lg);
}

.category-page-excel-training-nl .skill-name-excel-training-nl {
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-bold);
}

@media (max-width: 767px) {
  .category-page-excel-training-nl .skill-name-excel-training-nl {
    font-size: var(--font-size-base);
  }
}

.category-page-excel-training-nl .skill-description-excel-training-nl {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.category-page-excel-training-nl .additional-section-2-excel-training-nl {
  background-color: #f0f4f8;
  padding: 3rem 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .category-page-excel-training-nl .additional-section-2-excel-training-nl {
    padding: 5rem 0;
  }
}

@media (min-width: 1024px) {
  .category-page-excel-training-nl .additional-section-2-excel-training-nl {
    padding: 6rem 0;
  }
}

.category-page-excel-training-nl .additional-section-2-excel-training-nl .section-title-excel-training-nl {
  font-size: var(--font-size-3xl);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-2xl);
}

@media (max-width: 767px) {
  .category-page-excel-training-nl .additional-section-2-excel-training-nl .section-title-excel-training-nl {
    font-size: var(--font-size-2xl);
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .category-page-excel-training-nl .additional-section-2-excel-training-nl .section-title-excel-training-nl {
    font-size: var(--font-size-2xl);
  }
}

.category-page-excel-training-nl .benefits-list-excel-training-nl {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

@media (min-width: 768px) {
  .category-page-excel-training-nl .benefits-list-excel-training-nl {
    gap: var(--spacing-xl);
  }
}

@media (min-width: 1024px) {
  .category-page-excel-training-nl .benefits-list-excel-training-nl {
    gap: var(--spacing-2xl);
  }
}

.category-page-excel-training-nl .benefit-item-excel-training-nl {
  display: flex;
  flex-direction: row;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border-left: 5px solid var(--color-primary);
  transition: all var(--transition-base);
}

@media (min-width: 768px) {
  .category-page-excel-training-nl .benefit-item-excel-training-nl {
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
  }
}

.category-page-excel-training-nl .benefit-item-excel-training-nl:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(8px);
}

.category-page-excel-training-nl .benefit-number-excel-training-nl {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  color: #ffffff;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-2xl);
  border-radius: var(--radius-full);
  min-width: 50px;
}

.category-page-excel-training-nl .benefit-text-excel-training-nl {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.category-page-excel-training-nl .benefit-title-excel-training-nl {
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-bold);
}

@media (max-width: 767px) {
  .category-page-excel-training-nl .benefit-title-excel-training-nl {
    font-size: var(--font-size-base);
  }
}

.category-page-excel-training-nl .benefit-description-excel-training-nl {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.category-page-excel-training-nl .section-content-excel-training-nl {
  width: 100%;
}

    .post-excel-basics-masterclass {
      width: 100%;
    }

    
    .post-excel-basics-masterclass .excel-basics-masterclass-breadcrumbs {
      background-color: var(--color-bg-secondary);
      overflow: hidden;
      padding: var(--spacing-md) 0;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-breadcrumbs {
        padding: var(--spacing-lg) 0;
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-breadcrumbs-content {
      display: flex;
      flex-direction: row;
      align-items: center;
      gap: var(--spacing-sm);
      font-size: var(--font-size-sm);
      flex-wrap: wrap;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-breadcrumbs-content {
        font-size: var(--font-size-base);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-breadcrumbs a {
      color: var(--color-primary);
      font-weight: var(--font-weight-medium);
      transition: color var(--transition-base);
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-breadcrumbs a:hover {
      color: var(--color-primary-dark);
      text-decoration: underline;
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-breadcrumbs span {
      color: var(--color-text-secondary);
      font-weight: var(--font-weight-medium);
    }

    
    .post-excel-basics-masterclass .excel-basics-masterclass-hero {
      background-color: #0f1729;
      overflow: hidden;
      padding: var(--spacing-3xl) 0;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-hero {
        padding: var(--spacing-5xl) 0;
      }
    }

    @media (min-width: 1024px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-hero {
        padding: var(--spacing-6xl) 0;
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-hero-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-lg);
      align-items: flex-start;
      max-width: 800px;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-hero-content {
        gap: var(--spacing-2xl);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-hero h1 {
      font-size: var(--font-size-2xl);
      color: #ffffff;
      line-height: 1.2;
      letter-spacing: -0.5px;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-hero h1 {
        font-size: var(--font-size-4xl);
      }
    }

    @media (min-width: 1024px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-hero h1 {
        font-size: var(--font-size-5xl);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-hero-badge {
      display: inline-flex;
      align-items: center;
      gap: var(--spacing-xs);
      background-color: rgba(0, 102, 204, 0.15);
      color: #66b3ff;
      padding: var(--spacing-xs) var(--spacing-md);
      border-radius: var(--radius-full);
      font-size: var(--font-size-xs);
      font-weight: var(--font-weight-semibold);
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-lead {
      font-size: var(--font-size-base);
      line-height: 1.8;
      color: #d0d9e8;
      max-width: 650px;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-lead {
        font-size: var(--font-size-lg);
      }
    }

    
    .post-excel-basics-masterclass .excel-basics-masterclass-content-1 {
      background-color: var(--color-bg-primary);
      overflow: hidden;
      padding: var(--spacing-3xl) 0;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-content-1 {
        padding: var(--spacing-5xl) 0;
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-1-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-2xl);
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-1 h2 {
      font-size: var(--font-size-2xl);
      color: var(--color-text-primary);
      line-height: 1.3;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-content-1 h2 {
        font-size: var(--font-size-3xl);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-1 p {
      font-size: var(--font-size-base);
      color: var(--color-text-secondary);
      line-height: 1.8;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-content-1 p {
        font-size: var(--font-size-lg);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-1 ul {
      padding-left: var(--spacing-lg);
      display: flex;
      flex-direction: column;
      gap: var(--spacing-md);
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-1 li {
      color: var(--color-text-secondary);
      font-size: var(--font-size-base);
      line-height: 1.8;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-content-1 li {
        font-size: var(--font-size-lg);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-1 strong {
      color: var(--color-text-primary);
      font-weight: var(--font-weight-bold);
    }

    
    .post-excel-basics-masterclass .excel-basics-masterclass-content-2 {
      background-color: var(--color-bg-secondary);
      overflow: hidden;
      padding: var(--spacing-3xl) 0;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-content-2 {
        padding: var(--spacing-5xl) 0;
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-2-content {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--spacing-2xl);
      align-items: center;
    }

    @media (min-width: 1024px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-content-2-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-3xl);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-2 h2 {
      font-size: var(--font-size-2xl);
      color: var(--color-text-primary);
      line-height: 1.3;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-content-2 h2 {
        font-size: var(--font-size-3xl);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-2 p {
      font-size: var(--font-size-base);
      color: var(--color-text-secondary);
      line-height: 1.8;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-content-2 p {
        font-size: var(--font-size-lg);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-2-text {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-lg);
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-2-image {
      display: flex;
      justify-content: center;
      align-items: center;
      min-height: 300px;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-content-2-image {
        min-height: 350px;
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-2-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-lg);
    }

    
    .post-excel-basics-masterclass .excel-basics-masterclass-content-3 {
      background-color: var(--color-bg-primary);
      overflow: hidden;
      padding: var(--spacing-3xl) 0;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-content-3 {
        padding: var(--spacing-5xl) 0;
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-3-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-2xl);
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-3 h2 {
      font-size: var(--font-size-2xl);
      color: var(--color-text-primary);
      line-height: 1.3;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-content-3 h2 {
        font-size: var(--font-size-3xl);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-3-intro {
      font-size: var(--font-size-base);
      color: var(--color-text-secondary);
      line-height: 1.8;
      max-width: 700px;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-content-3-intro {
        font-size: var(--font-size-lg);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-features-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--spacing-lg);
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
      }
    }

    @media (min-width: 1024px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-features-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-feature-card {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-md);
      padding: var(--spacing-lg);
      background-color: var(--color-bg-secondary);
      border: 2px solid var(--color-border);
      border-radius: var(--radius-lg);
      transition: all var(--transition-base);
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-feature-card {
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-feature-card:hover {
      border-color: var(--color-primary);
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-feature-icon {
      font-size: var(--icon-2xl);
      color: var(--color-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      width: 3rem;
      height: 3rem;
      background-color: var(--color-primary-light);
      border-radius: var(--radius-lg);
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-feature-title {
      font-size: var(--font-size-lg);
      font-weight: var(--font-weight-bold);
      color: var(--color-text-primary);
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-feature-title {
        font-size: var(--font-size-xl);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-feature-text {
      font-size: var(--font-size-sm);
      color: var(--color-text-secondary);
      line-height: 1.7;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-feature-text {
        font-size: var(--font-size-base);
      }
    }

    
    .post-excel-basics-masterclass .excel-basics-masterclass-content-4 {
      background-color: #e6f0ff;
      overflow: hidden;
      padding: var(--spacing-3xl) 0;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-content-4 {
        padding: var(--spacing-5xl) 0;
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-4-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-2xl);
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-4 h2 {
      font-size: var(--font-size-2xl);
      color: #0a0e27;
      line-height: 1.3;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-content-4 h2 {
        font-size: var(--font-size-3xl);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-4 p {
      font-size: var(--font-size-base);
      color: #1a3a52;
      line-height: 1.8;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-content-4 p {
        font-size: var(--font-size-lg);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-steps-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--spacing-lg);
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-steps-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-step {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-md);
      padding: var(--spacing-lg);
      background-color: var(--color-bg-primary);
      border-left: 4px solid var(--color-primary);
      border-radius: var(--radius-md);
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-step {
        padding: var(--spacing-xl);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-step-number {
      font-size: var(--font-size-2xl);
      font-weight: var(--font-weight-extrabold);
      color: var(--color-primary);
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-step-title {
      font-size: var(--font-size-lg);
      font-weight: var(--font-weight-bold);
      color: var(--color-text-primary);
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-step-title {
        font-size: var(--font-size-xl);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-step-text {
      font-size: var(--font-size-sm);
      color: var(--color-text-secondary);
      line-height: 1.7;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-step-text {
        font-size: var(--font-size-base);
      }
    }

    
    .post-excel-basics-masterclass .excel-basics-masterclass-content-5 {
      background-color: var(--color-bg-primary);
      overflow: hidden;
      padding: var(--spacing-3xl) 0;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-content-5 {
        padding: var(--spacing-5xl) 0;
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-5-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-2xl);
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-content-5 h2 {
      font-size: var(--font-size-2xl);
      color: var(--color-text-primary);
      line-height: 1.3;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-content-5 h2 {
        font-size: var(--font-size-3xl);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-best-practices {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--spacing-lg);
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-best-practices {
        gap: var(--spacing-xl);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-practice-item {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-md);
      padding: var(--spacing-lg);
      background-color: var(--color-bg-secondary);
      border-radius: var(--radius-lg);
      border: 1px solid var(--color-border);
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-practice-item {
        padding: var(--spacing-xl);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-practice-title {
      font-size: var(--font-size-lg);
      font-weight: var(--font-weight-bold);
      color: var(--color-text-primary);
      display: flex;
      flex-direction: row;
      align-items: center;
      gap: var(--spacing-md);
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-practice-title {
        font-size: var(--font-size-xl);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-practice-icon {
      font-size: var(--icon-lg);
      color: var(--color-success);
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-practice-text {
      font-size: var(--font-size-sm);
      color: var(--color-text-secondary);
      line-height: 1.7;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-practice-text {
        font-size: var(--font-size-base);
      }
    }

    
    .post-excel-basics-masterclass .excel-basics-masterclass-conclusion {
      background-color: #0f1729;
      overflow: hidden;
      padding: var(--spacing-3xl) 0;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-conclusion {
        padding: var(--spacing-5xl) 0;
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-conclusion-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-lg);
      max-width: 800px;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-conclusion-content {
        gap: var(--spacing-2xl);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-conclusion h2 {
      font-size: var(--font-size-2xl);
      color: #ffffff;
      line-height: 1.3;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-conclusion h2 {
        font-size: var(--font-size-3xl);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-conclusion p {
      font-size: var(--font-size-base);
      color: #d0d9e8;
      line-height: 1.8;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-conclusion p {
        font-size: var(--font-size-lg);
      }
    }

    
    .post-excel-basics-masterclass .excel-basics-masterclass-related {
      background-color: var(--color-bg-secondary);
      overflow: hidden;
      padding: var(--spacing-3xl) 0;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-related {
        padding: var(--spacing-5xl) 0;
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-related-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-2xl);
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-related-header {
      text-align: center;
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-related h2 {
      font-size: var(--font-size-2xl);
      color: var(--color-text-primary);
      line-height: 1.3;
      margin-bottom: var(--spacing-md);
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-related h2 {
        font-size: var(--font-size-3xl);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-related-desc {
      font-size: var(--font-size-sm);
      color: var(--color-text-secondary);
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-related-desc {
        font-size: var(--font-size-base);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-posts-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--spacing-lg);
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-posts-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
      }
    }

    @media (min-width: 1024px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-posts-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-post-card {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-md);
      background-color: var(--color-bg-primary);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-xl);
      overflow: hidden;
      transition: all var(--transition-base);
      box-shadow: var(--shadow-sm);
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-post-card {
        gap: var(--spacing-lg);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-post-card:hover {
      box-shadow: var(--shadow-lg);
      border-color: var(--color-primary-light);
      transform: translateY(-4px);
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-post-image {
      width: 100%;
      height: 200px;
      overflow: hidden;
      background-color: var(--color-bg-secondary);
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-post-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform var(--transition-base);
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-post-card:hover .excel-basics-masterclass-post-image img {
      transform: scale(1.05);
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-post-body {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-md);
      padding: var(--spacing-lg);
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-post-body {
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-post-title {
      font-size: var(--font-size-lg);
      font-weight: var(--font-weight-bold);
      color: var(--color-text-primary);
      line-height: 1.4;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-post-title {
        font-size: var(--font-size-xl);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-post-excerpt {
      font-size: var(--font-size-sm);
      color: var(--color-text-secondary);
      line-height: 1.6;
      flex-grow: 1;
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-post-excerpt {
        font-size: var(--font-size-base);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-post-link {
      display: inline-flex;
      align-items: center;
      gap: var(--spacing-sm);
      color: var(--color-primary);
      font-weight: var(--font-weight-semibold);
      font-size: var(--font-size-sm);
      transition: all var(--transition-base);
    }

    @media (min-width: 768px) {
      .post-excel-basics-masterclass .excel-basics-masterclass-post-link {
        font-size: var(--font-size-base);
      }
    }

    .post-excel-basics-masterclass .excel-basics-masterclass-post-link:hover {
      color: var(--color-primary-dark);
      transform: translateX(4px);
    }

.post-advanced-data-visualization {
  width: 100%;
}

.post-advanced-data-visualization .advanced-data-visualization-breadcrumbs {
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-lg) 0;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 768px) {
  .post-advanced-data-visualization .advanced-data-visualization-breadcrumbs {
    padding: var(--spacing-xl) 0;
  }
}

.post-advanced-data-visualization .advanced-data-visualization-breadcrumbs-content {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.post-advanced-data-visualization .advanced-data-visualization-breadcrumb-link {
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-base);
}

.post-advanced-data-visualization .advanced-data-visualization-breadcrumb-link:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

.post-advanced-data-visualization .advanced-data-visualization-breadcrumb-separator {
  color: var(--color-text-secondary);
  margin: 0 var(--spacing-xs);
}

.post-advanced-data-visualization .advanced-data-visualization-breadcrumb-current {
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

.post-advanced-data-visualization .advanced-data-visualization-hero {
  background: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 100%);
  padding: var(--spacing-3xl) 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .post-advanced-data-visualization .advanced-data-visualization-hero {
    padding: var(--spacing-5xl) 0;
  }
}

@media (min-width: 1024px) {
  .post-advanced-data-visualization .advanced-data-visualization-hero {
    padding: var(--spacing-6xl) 0;
  }
}

.post-advanced-data-visualization .advanced-data-visualization-hero-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

@media (min-width: 1024px) {
  .post-advanced-data-visualization .advanced-data-visualization-hero-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-hero-text {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.post-advanced-data-visualization .advanced-data-visualization-title {
  font-size: var(--font-size-4xl);
  color: #ffffff;
  line-height: 1.1;
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-title {
    font-size: var(--font-size-2xl);
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .post-advanced-data-visualization .advanced-data-visualization-title {
    font-size: var(--font-size-3xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-lead {
  font-size: var(--font-size-lg);
  color: #e0e0e0;
  line-height: 1.8;
  font-weight: var(--font-weight-regular);
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-lead {
    font-size: var(--font-size-base);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: var(--font-size-sm);
  color: #b0b0b0;
}

.post-advanced-data-visualization .advanced-data-visualization-read-time,
.post-advanced-data-visualization .advanced-data-visualization-category {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.post-advanced-data-visualization .advanced-data-visualization-meta-separator {
  color: #666666;
}

.post-advanced-data-visualization .advanced-data-visualization-hero-image {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
}

@media (max-width: 1023px) {
  .post-advanced-data-visualization .advanced-data-visualization-hero-image {
    min-height: 250px;
  }
}

.post-advanced-data-visualization .advanced-data-visualization-hero-img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-xl);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.post-advanced-data-visualization .advanced-data-visualization-content-1 {
  background-color: var(--color-bg-primary);
  padding: var(--spacing-3xl) 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .post-advanced-data-visualization .advanced-data-visualization-content-1 {
    padding: var(--spacing-5xl) 0;
  }
}

.post-advanced-data-visualization .advanced-data-visualization-content-1-content {
  max-width: 900px;
}

.post-advanced-data-visualization .advanced-data-visualization-section-title {
  font-size: var(--font-size-3xl);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.2;
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-section-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-lg);
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .post-advanced-data-visualization .advanced-data-visualization-section-title {
    font-size: var(--font-size-2xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-section-text-p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-section-text-p {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-content-2 {
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-3xl) 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .post-advanced-data-visualization .advanced-data-visualization-content-2 {
    padding: var(--spacing-5xl) 0;
  }
}

.post-advanced-data-visualization .advanced-data-visualization-content-2-title {
  font-size: var(--font-size-3xl);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-2xl);
  text-align: center;
  line-height: 1.2;
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-content-2-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xl);
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .post-advanced-data-visualization .advanced-data-visualization-content-2-title {
    font-size: var(--font-size-2xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-techniques-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

@media (min-width: 768px) {
  .post-advanced-data-visualization .advanced-data-visualization-techniques-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
  }
}

@media (min-width: 1024px) {
  .post-advanced-data-visualization .advanced-data-visualization-techniques-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-technique-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

@media (min-width: 768px) {
  .post-advanced-data-visualization .advanced-data-visualization-technique-card {
    padding: var(--spacing-xl);
    gap: var(--spacing-lg);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-technique-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-primary-light);
}

.post-advanced-data-visualization .advanced-data-visualization-technique-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-lg);
  font-size: var(--icon-lg);
}

.post-advanced-data-visualization .advanced-data-visualization-technique-title {
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-bold);
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-technique-title {
    font-size: var(--font-size-base);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-technique-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.post-advanced-data-visualization .advanced-data-visualization-content-3 {
  background-color: var(--color-bg-primary);
  padding: var(--spacing-3xl) 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .post-advanced-data-visualization .advanced-data-visualization-content-3 {
    padding: var(--spacing-5xl) 0;
  }
}

.post-advanced-data-visualization .advanced-data-visualization-content-3-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
  align-items: start;
}

@media (min-width: 1024px) {
  .post-advanced-data-visualization .advanced-data-visualization-content-3-content {
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-3xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-content-3-title {
  font-size: var(--font-size-3xl);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.2;
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-content-3-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-lg);
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .post-advanced-data-visualization .advanced-data-visualization-content-3-title {
    font-size: var(--font-size-2xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-content-3-p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-content-3-p {
    font-size: var(--font-size-sm);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-best-practices {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.post-advanced-data-visualization .advanced-data-visualization-practice-item {
  padding: var(--spacing-lg);
  background-color: var(--color-bg-secondary);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
}

@media (min-width: 768px) {
  .post-advanced-data-visualization .advanced-data-visualization-practice-item {
    padding: var(--spacing-xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-practice-title {
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-practice-title {
    font-size: var(--font-size-base);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-practice-title i {
  color: var(--color-primary);
  font-size: var(--icon-md);
}

.post-advanced-data-visualization .advanced-data-visualization-practice-text {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

.post-advanced-data-visualization .advanced-data-visualization-content-3-image {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 350px;
}

@media (max-width: 1023px) {
  .post-advanced-data-visualization .advanced-data-visualization-content-3-image {
    min-height: 300px;
  }
}

.post-advanced-data-visualization .advanced-data-visualization-content-3-img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.post-advanced-data-visualization .advanced-data-visualization-content-4 {
  background: linear-gradient(135deg, #f0f4f8 0%, #e6f0ff 100%);
  padding: var(--spacing-3xl) 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .post-advanced-data-visualization .advanced-data-visualization-content-4 {
    padding: var(--spacing-5xl) 0;
  }
}

.post-advanced-data-visualization .advanced-data-visualization-content-4-title {
  font-size: var(--font-size-3xl);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
  text-align: center;
  line-height: 1.2;
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-content-4-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .post-advanced-data-visualization .advanced-data-visualization-content-4-title {
    font-size: var(--font-size-2xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-content-4-p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  line-height: 1.8;
  margin-bottom: var(--spacing-2xl);
  text-align: center;
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-content-4-p {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-features-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  max-width: 900px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .post-advanced-data-visualization .advanced-data-visualization-features-list {
    gap: var(--spacing-xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-feature {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

@media (min-width: 768px) {
  .post-advanced-data-visualization .advanced-data-visualization-feature {
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-feature-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--color-primary);
  color: white;
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.post-advanced-data-visualization .advanced-data-visualization-feature-title {
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-feature-title {
    font-size: var(--font-size-base);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-feature-text {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

.post-advanced-data-visualization .advanced-data-visualization-content-5 {
  background-color: var(--color-bg-primary);
  padding: var(--spacing-3xl) 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .post-advanced-data-visualization .advanced-data-visualization-content-5 {
    padding: var(--spacing-5xl) 0;
  }
}

.post-advanced-data-visualization .advanced-data-visualization-content-5-title {
  font-size: var(--font-size-3xl);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
  text-align: center;
  line-height: 1.2;
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-content-5-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .post-advanced-data-visualization .advanced-data-visualization-content-5-title {
    font-size: var(--font-size-2xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-content-5-p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  line-height: 1.8;
  margin-bottom: var(--spacing-2xl);
  text-align: center;
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-content-5-p {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-applications {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  max-width: 900px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .post-advanced-data-visualization .advanced-data-visualization-applications {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
  }
}

@media (min-width: 1024px) {
  .post-advanced-data-visualization .advanced-data-visualization-applications {
    grid-template-columns: repeat(2, 1fr);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-app-item {
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, #f8f9fa 0%, #f0f4f8 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

@media (min-width: 768px) {
  .post-advanced-data-visualization .advanced-data-visualization-app-item {
    padding: var(--spacing-xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-app-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--color-primary-light);
}

.post-advanced-data-visualization .advanced-data-visualization-app-title {
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-app-title {
    font-size: var(--font-size-base);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-app-title i {
  color: var(--color-primary);
  font-size: var(--icon-lg);
}

.post-advanced-data-visualization .advanced-data-visualization-app-text {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

.post-advanced-data-visualization .advanced-data-visualization-conclusion {
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-3xl) 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .post-advanced-data-visualization .advanced-data-visualization-conclusion {
    padding: var(--spacing-5xl) 0;
  }
}

.post-advanced-data-visualization .advanced-data-visualization-conclusion-content {
  max-width: 900px;
}

.post-advanced-data-visualization .advanced-data-visualization-conclusion-title {
  font-size: var(--font-size-3xl);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-conclusion-title {
    font-size: var(--font-size-xl);
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .post-advanced-data-visualization .advanced-data-visualization-conclusion-title {
    font-size: var(--font-size-2xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-conclusion-p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  line-height: 1.8;
  margin-bottom: var(--spacing-xl);
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-conclusion-p {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-tip-box {
  padding: var(--spacing-lg);
  background-color: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-lg);
}

@media (min-width: 768px) {
  .post-advanced-data-visualization .advanced-data-visualization-tip-box {
    padding: var(--spacing-xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-tip-title {
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-tip-title {
    font-size: var(--font-size-base);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-tip-title i {
  color: var(--color-primary);
  font-size: var(--icon-lg);
}

.post-advanced-data-visualization .advanced-data-visualization-tip-list {
  list-style-position: inside;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.8;
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-tip-list {
    font-size: var(--font-size-xs);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-tip-list li {
  margin-bottom: var(--spacing-sm);
  padding-left: var(--spacing-md);
}

.post-advanced-data-visualization .advanced-data-visualization-related {
  background-color: var(--color-bg-primary);
  padding: var(--spacing-3xl) 0;
  overflow: hidden;
  border-top: 1px solid var(--color-border);
}

@media (min-width: 768px) {
  .post-advanced-data-visualization .advanced-data-visualization-related {
    padding: var(--spacing-5xl) 0;
  }
}

.post-advanced-data-visualization .advanced-data-visualization-related-title {
  font-size: var(--font-size-3xl);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-2xl);
  text-align: center;
  line-height: 1.2;
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-related-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xl);
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .post-advanced-data-visualization .advanced-data-visualization-related-title {
    font-size: var(--font-size-2xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

@media (min-width: 768px) {
  .post-advanced-data-visualization .advanced-data-visualization-related-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
  }
}

@media (min-width: 1024px) {
  .post-advanced-data-visualization .advanced-data-visualization-related-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-related-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.post-advanced-data-visualization .advanced-data-visualization-related-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-primary-light);
}

.post-advanced-data-visualization .advanced-data-visualization-related-image-wrapper {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background-color: var(--color-bg-secondary);
}

.post-advanced-data-visualization .advanced-data-visualization-related-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: all var(--transition-base);
}

.post-advanced-data-visualization .advanced-data-visualization-related-card:hover .advanced-data-visualization-related-img {
  transform: scale(1.05);
}

.post-advanced-data-visualization .advanced-data-visualization-related-card-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
}

@media (min-width: 768px) {
  .post-advanced-data-visualization .advanced-data-visualization-related-card-content {
    padding: var(--spacing-xl);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-related-card-title {
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-bold);
  line-height: 1.3;
}

@media (max-width: 767px) {
  .post-advanced-data-visualization .advanced-data-visualization-related-card-title {
    font-size: var(--font-size-base);
  }
}

.post-advanced-data-visualization .advanced-data-visualization-related-card-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  flex-grow: 1;
}

.post-advanced-data-visualization .advanced-data-visualization-related-link {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all var(--transition-base);
}

.post-advanced-data-visualization .advanced-data-visualization-related-link:hover {
  color: var(--color-primary-dark);
  gap: var(--spacing-md);
}

.post-advanced-data-visualization .advanced-data-visualization-related-link i {
  font-size: var(--icon-sm);
}

    .post-business-data-analysis {
      width: 100%;
    }

    
    .post-business-data-analysis .business-data-analysis-breadcrumbs {
      background-color: var(--color-bg-secondary);
      padding: var(--spacing-md) 0;
      border-bottom: 1px solid var(--color-border);
      overflow: hidden;
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-breadcrumbs {
        padding: var(--spacing-lg) 0;
      }
    }

    .post-business-data-analysis .business-data-analysis-breadcrumbs-content {
      display: flex;
      flex-direction: row;
      align-items: center;
      gap: var(--spacing-sm);
      flex-wrap: wrap;
      font-size: var(--font-size-sm);
    }

    .post-business-data-analysis .business-data-analysis-breadcrumbs a {
      color: var(--color-primary);
      font-weight: var(--font-weight-medium);
      transition: all var(--transition-base);
    }

    .post-business-data-analysis .business-data-analysis-breadcrumbs a:hover {
      color: var(--color-primary-dark);
      text-decoration: underline;
    }

    .post-business-data-analysis .business-data-analysis-breadcrumbs span {
      color: var(--color-text-secondary);
      font-weight: var(--font-weight-medium);
    }

    .post-business-data-analysis .business-data-analysis-breadcrumbs-separator {
      color: var(--color-text-secondary);
      margin: 0 var(--spacing-xs);
    }

    
    .post-business-data-analysis .business-data-analysis-hero {
      background: linear-gradient(135deg, #0052a3 0%, #0066cc 100%);
      padding: var(--spacing-4xl) 0;
      overflow: hidden;
      position: relative;
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-hero {
        padding: var(--spacing-5xl) 0;
      }
    }

    @media (min-width: 1024px) {
      .post-business-data-analysis .business-data-analysis-hero {
        padding: var(--spacing-6xl) 0;
      }
    }

    .post-business-data-analysis .business-data-analysis-hero-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-lg);
      max-width: 900px;
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-hero-content {
        gap: var(--spacing-xl);
      }
    }

    .post-business-data-analysis .business-data-analysis-hero h1 {
      color: #ffffff;
      font-size: var(--font-size-4xl);
      line-height: 1.2;
      letter-spacing: -0.5px;
    }

    @media (max-width: 767px) {
      .post-business-data-analysis .business-data-analysis-hero h1 {
        font-size: var(--font-size-2xl);
      }
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-hero h1 {
        font-size: var(--font-size-5xl);
      }
    }

    .post-business-data-analysis .business-data-analysis-hero-badge {
      display: inline-flex;
      align-items: center;
      gap: var(--spacing-xs);
      width: fit-content;
      padding: var(--spacing-xs) var(--spacing-md);
      background-color: rgba(255, 255, 255, 0.2);
      color: #ffffff;
      font-size: var(--font-size-xs);
      font-weight: var(--font-weight-semibold);
      border-radius: var(--radius-full);
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .post-business-data-analysis .business-data-analysis-hero-lead {
      color: #e0e0e0;
      font-size: var(--font-size-lg);
      line-height: 1.7;
      max-width: 700px;
    }

    @media (max-width: 767px) {
      .post-business-data-analysis .business-data-analysis-hero-lead {
        font-size: var(--font-size-base);
      }
    }

    .post-business-data-analysis .business-data-analysis-hero-meta {
      display: flex;
      flex-direction: row;
      gap: var(--spacing-lg);
      flex-wrap: wrap;
      color: #e0e0e0;
      font-size: var(--font-size-sm);
    }

    .post-business-data-analysis .business-data-analysis-hero-meta-item {
      display: flex;
      flex-direction: row;
      align-items: center;
      gap: var(--spacing-xs);
    }

    
    .post-business-data-analysis .business-data-analysis-section-1 {
      background-color: var(--color-bg-primary);
      padding: var(--spacing-4xl) 0;
      overflow: hidden;
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-section-1 {
        padding: var(--spacing-5xl) 0;
      }
    }

    @media (min-width: 1024px) {
      .post-business-data-analysis .business-data-analysis-section-1 {
        padding: var(--spacing-6xl) 0;
      }
    }

    .post-business-data-analysis .business-data-analysis-section-1-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-2xl);
    }

    @media (min-width: 1024px) {
      .post-business-data-analysis .business-data-analysis-section-1-content {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-3xl);
        align-items: center;
      }
    }

    .post-business-data-analysis .business-data-analysis-section-1 h2 {
      color: var(--color-text-primary);
      font-size: var(--font-size-3xl);
      margin-bottom: var(--spacing-lg);
    }

    @media (max-width: 767px) {
      .post-business-data-analysis .business-data-analysis-section-1 h2 {
        font-size: var(--font-size-xl);
      }
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-section-1 h2 {
        font-size: var(--font-size-2xl);
      }
    }

    .post-business-data-analysis .business-data-analysis-section-1 p {
      color: var(--color-text-secondary);
      font-size: var(--font-size-base);
      line-height: 1.8;
      margin-bottom: var(--spacing-md);
    }

    @media (max-width: 767px) {
      .post-business-data-analysis .business-data-analysis-section-1 p {
        font-size: var(--font-size-sm);
      }
    }

    .post-business-data-analysis .business-data-analysis-section-1-image {
      width: 100%;
      max-height: 350px;
      object-fit: cover;
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-lg);
    }

    .post-business-data-analysis .business-data-analysis-section-1-list {
      list-style: none;
      padding: 0;
      margin: var(--spacing-lg) 0;
    }

    .post-business-data-analysis .business-data-analysis-section-1-list li {
      display: flex;
      flex-direction: row;
      gap: var(--spacing-md);
      margin-bottom: var(--spacing-md);
      color: var(--color-text-secondary);
      font-size: var(--font-size-base);
      line-height: 1.6;
    }

    @media (max-width: 767px) {
      .post-business-data-analysis .business-data-analysis-section-1-list li {
        font-size: var(--font-size-sm);
      }
    }

    .post-business-data-analysis .business-data-analysis-section-1-list li::before {
      content: "";
      color: var(--color-success);
      font-weight: var(--font-weight-bold);
      min-width: 1.5rem;
      flex-shrink: 0;
    }

    
    .post-business-data-analysis .business-data-analysis-section-2 {
      background-color: var(--color-bg-tertiary);
      padding: var(--spacing-4xl) 0;
      overflow: hidden;
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-section-2 {
        padding: var(--spacing-5xl) 0;
      }
    }

    @media (min-width: 1024px) {
      .post-business-data-analysis .business-data-analysis-section-2 {
        padding: var(--spacing-6xl) 0;
      }
    }

    .post-business-data-analysis .business-data-analysis-section-2-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-2xl);
    }

    .post-business-data-analysis .business-data-analysis-section-2 h2 {
      color: var(--color-text-primary);
      font-size: var(--font-size-3xl);
      margin-bottom: var(--spacing-lg);
    }

    @media (max-width: 767px) {
      .post-business-data-analysis .business-data-analysis-section-2 h2 {
        font-size: var(--font-size-xl);
      }
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-section-2 h2 {
        font-size: var(--font-size-2xl);
      }
    }

    .post-business-data-analysis .business-data-analysis-section-2 p {
      color: var(--color-text-secondary);
      font-size: var(--font-size-base);
      line-height: 1.8;
      margin-bottom: var(--spacing-md);
    }

    @media (max-width: 767px) {
      .post-business-data-analysis .business-data-analysis-section-2 p {
        font-size: var(--font-size-sm);
      }
    }

    .post-business-data-analysis .business-data-analysis-section-2-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--spacing-lg);
      margin-top: var(--spacing-xl);
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-section-2-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
      }
    }

    @media (min-width: 1024px) {
      .post-business-data-analysis .business-data-analysis-section-2-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-2xl);
      }
    }

    .post-business-data-analysis .business-data-analysis-feature-card {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-md);
      padding: var(--spacing-lg);
      background-color: var(--color-bg-primary);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      transition: all var(--transition-base);
      box-shadow: var(--shadow-sm);
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-feature-card {
        padding: var(--spacing-xl);
      }
    }

    .post-business-data-analysis .business-data-analysis-feature-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
      border-color: var(--color-primary-light);
    }

    .post-business-data-analysis .business-data-analysis-feature-icon {
      font-size: var(--icon-2xl);
      color: var(--color-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      width: 3rem;
      height: 3rem;
      background-color: var(--color-primary-light);
      border-radius: var(--radius-lg);
    }

    .post-business-data-analysis .business-data-analysis-feature-title {
      color: var(--color-text-primary);
      font-size: var(--font-size-lg);
      font-weight: var(--font-weight-semibold);
    }

    @media (max-width: 767px) {
      .post-business-data-analysis .business-data-analysis-feature-title {
        font-size: var(--font-size-base);
      }
    }

    .post-business-data-analysis .business-data-analysis-feature-desc {
      color: var(--color-text-secondary);
      font-size: var(--font-size-sm);
      line-height: 1.6;
    }

    
    .post-business-data-analysis .business-data-analysis-section-3 {
      background-color: var(--color-bg-primary);
      padding: var(--spacing-4xl) 0;
      overflow: hidden;
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-section-3 {
        padding: var(--spacing-5xl) 0;
      }
    }

    @media (min-width: 1024px) {
      .post-business-data-analysis .business-data-analysis-section-3 {
        padding: var(--spacing-6xl) 0;
      }
    }

    .post-business-data-analysis .business-data-analysis-section-3-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-2xl);
    }

    .post-business-data-analysis .business-data-analysis-section-3 h2 {
      color: var(--color-text-primary);
      font-size: var(--font-size-3xl);
      margin-bottom: var(--spacing-lg);
    }

    @media (max-width: 767px) {
      .post-business-data-analysis .business-data-analysis-section-3 h2 {
        font-size: var(--font-size-xl);
      }
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-section-3 h2 {
        font-size: var(--font-size-2xl);
      }
    }

    .post-business-data-analysis .business-data-analysis-section-3 p {
      color: var(--color-text-secondary);
      font-size: var(--font-size-base);
      line-height: 1.8;
      margin-bottom: var(--spacing-md);
    }

    @media (max-width: 767px) {
      .post-business-data-analysis .business-data-analysis-section-3 p {
        font-size: var(--font-size-sm);
      }
    }

    .post-business-data-analysis .business-data-analysis-section-3-steps {
      list-style: none;
      padding: 0;
      margin: var(--spacing-lg) 0;
      display: flex;
      flex-direction: column;
      gap: var(--spacing-lg);
    }

    .post-business-data-analysis .business-data-analysis-section-3-step {
      display: flex;
      flex-direction: row;
      gap: var(--spacing-lg);
      padding: var(--spacing-lg);
      background-color: var(--color-bg-secondary);
      border-left: 4px solid var(--color-primary);
      border-radius: var(--radius-lg);
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-section-3-step {
        padding: var(--spacing-xl);
      }
    }

    .post-business-data-analysis .business-data-analysis-step-number {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 2.5rem;
      height: 2.5rem;
      background-color: var(--color-primary);
      color: #ffffff;
      border-radius: var(--radius-full);
      font-weight: var(--font-weight-bold);
      flex-shrink: 0;
      font-size: var(--font-size-lg);
    }

    .post-business-data-analysis .business-data-analysis-step-content h3 {
      color: var(--color-text-primary);
      font-size: var(--font-size-lg);
      margin-bottom: var(--spacing-sm);
    }

    @media (max-width: 767px) {
      .post-business-data-analysis .business-data-analysis-step-content h3 {
        font-size: var(--font-size-base);
      }
    }

    .post-business-data-analysis .business-data-analysis-step-content p {
      color: var(--color-text-secondary);
      font-size: var(--font-size-sm);
      line-height: 1.6;
      margin: 0;
    }

    
    .post-business-data-analysis .business-data-analysis-section-4 {
      background-color: #e6f0ff;
      padding: var(--spacing-4xl) 0;
      overflow: hidden;
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-section-4 {
        padding: var(--spacing-5xl) 0;
      }
    }

    @media (min-width: 1024px) {
      .post-business-data-analysis .business-data-analysis-section-4 {
        padding: var(--spacing-6xl) 0;
      }
    }

    .post-business-data-analysis .business-data-analysis-section-4-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-xl);
      max-width: 900px;
    }

    .post-business-data-analysis .business-data-analysis-section-4 h2 {
      color: var(--color-text-primary);
      font-size: var(--font-size-3xl);
    }

    @media (max-width: 767px) {
      .post-business-data-analysis .business-data-analysis-section-4 h2 {
        font-size: var(--font-size-xl);
      }
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-section-4 h2 {
        font-size: var(--font-size-2xl);
      }
    }

    .post-business-data-analysis .business-data-analysis-section-4 p {
      color: var(--color-text-secondary);
      font-size: var(--font-size-base);
      line-height: 1.8;
    }

    @media (max-width: 767px) {
      .post-business-data-analysis .business-data-analysis-section-4 p {
        font-size: var(--font-size-sm);
      }
    }

    
    .post-business-data-analysis .business-data-analysis-related {
      background-color: var(--color-bg-primary);
      padding: var(--spacing-4xl) 0;
      overflow: hidden;
      border-top: 1px solid var(--color-border);
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-related {
        padding: var(--spacing-5xl) 0;
      }
    }

    @media (min-width: 1024px) {
      .post-business-data-analysis .business-data-analysis-related {
        padding: var(--spacing-6xl) 0;
      }
    }

    .post-business-data-analysis .business-data-analysis-related-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-2xl);
    }

    .post-business-data-analysis .business-data-analysis-related h2 {
      color: var(--color-text-primary);
      font-size: var(--font-size-3xl);
      text-align: center;
    }

    @media (max-width: 767px) {
      .post-business-data-analysis .business-data-analysis-related h2 {
        font-size: var(--font-size-xl);
      }
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-related h2 {
        font-size: var(--font-size-2xl);
      }
    }

    .post-business-data-analysis .business-data-analysis-related-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--spacing-lg);
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-related-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
      }
    }

    @media (min-width: 1024px) {
      .post-business-data-analysis .business-data-analysis-related-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-2xl);
      }
    }

    .post-business-data-analysis .business-data-analysis-related-card {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-md);
      overflow: hidden;
      background-color: var(--color-bg-primary);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      transition: all var(--transition-base);
      box-shadow: var(--shadow-sm);
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-related-card {
        gap: var(--spacing-lg);
      }
    }

    .post-business-data-analysis .business-data-analysis-related-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-8px);
      border-color: var(--color-primary-light);
    }

    .post-business-data-analysis .business-data-analysis-related-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
    }

    .post-business-data-analysis .business-data-analysis-related-card-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-md);
      padding: var(--spacing-lg);
      flex: 1;
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-related-card-content {
        padding: var(--spacing-xl);
      }
    }

    .post-business-data-analysis .business-data-analysis-related-title {
      color: var(--color-text-primary);
      font-size: var(--font-size-lg);
      font-weight: var(--font-weight-semibold);
      line-height: 1.4;
    }

    @media (max-width: 767px) {
      .post-business-data-analysis .business-data-analysis-related-title {
        font-size: var(--font-size-base);
      }
    }

    .post-business-data-analysis .business-data-analysis-related-desc {
      color: var(--color-text-secondary);
      font-size: var(--font-size-sm);
      line-height: 1.6;
      flex: 1;
    }

    .post-business-data-analysis .business-data-analysis-related-link {
      display: inline-flex;
      align-items: center;
      gap: var(--spacing-sm);
      color: var(--color-primary);
      font-weight: var(--font-weight-semibold);
      font-size: var(--font-size-sm);
      transition: all var(--transition-base);
    }

    .post-business-data-analysis .business-data-analysis-related-link:hover {
      color: var(--color-primary-dark);
      transform: translateX(4px);
    }

    .post-business-data-analysis .business-data-analysis-related-link::after {
      content: "";
      transition: all var(--transition-base);
    }

    .post-business-data-analysis .business-data-analysis-related-link:hover::after {
      transform: translateX(4px);
    }

    
    .post-business-data-analysis .business-data-analysis-conclusion {
      background: linear-gradient(135deg, #0052a3 0%, #0066cc 100%);
      padding: var(--spacing-4xl) 0;
      overflow: hidden;
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-conclusion {
        padding: var(--spacing-5xl) 0;
      }
    }

    @media (min-width: 1024px) {
      .post-business-data-analysis .business-data-analysis-conclusion {
        padding: var(--spacing-6xl) 0;
      }
    }

    .post-business-data-analysis .business-data-analysis-conclusion-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-xl);
      max-width: 800px;
    }

    .post-business-data-analysis .business-data-analysis-conclusion h2 {
      color: #ffffff;
      font-size: var(--font-size-3xl);
    }

    @media (max-width: 767px) {
      .post-business-data-analysis .business-data-analysis-conclusion h2 {
        font-size: var(--font-size-xl);
      }
    }

    @media (min-width: 768px) {
      .post-business-data-analysis .business-data-analysis-conclusion h2 {
        font-size: var(--font-size-2xl);
      }
    }

    .post-business-data-analysis .business-data-analysis-conclusion p {
      color: #e0e0e0;
      font-size: var(--font-size-base);
      line-height: 1.8;
    }

    @media (max-width: 767px) {
      .post-business-data-analysis .business-data-analysis-conclusion p {
        font-size: var(--font-size-sm);
      }
    }

    .post-business-data-analysis .business-data-analysis-conclusion-list {
      list-style: none;
      padding: 0;
      margin: var(--spacing-lg) 0;
    }

    .post-business-data-analysis .business-data-analysis-conclusion-list li {
      display: flex;
      flex-direction: row;
      gap: var(--spacing-md);
      margin-bottom: var(--spacing-md);
      color: #e0e0e0;
      font-size: var(--font-size-base);
      line-height: 1.6;
    }

    @media (max-width: 767px) {
      .post-business-data-analysis .business-data-analysis-conclusion-list li {
        font-size: var(--font-size-sm);
      }
    }

    .post-business-data-analysis .business-data-analysis-conclusion-list li::before {
      content: "";
      color: #f59e0b;
      font-weight: var(--font-weight-bold);
      min-width: 1.5rem;
      flex-shrink: 0;
    }

  
  .post-online-learning-guide-beginners .online-learning-guide-beginners-breadcrumbs {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--color-border);
    overflow: hidden;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-breadcrumbs {
      padding: var(--spacing-xl) 0;
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-breadcrumbs .container {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-breadcrumb-link {
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-base);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-breadcrumb-link {
      font-size: var(--font-size-base);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-breadcrumb-link:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-breadcrumb-separator {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-breadcrumb-current {
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-breadcrumb-current {
      font-size: var(--font-size-base);
    }
  }

  
  .post-online-learning-guide-beginners .online-learning-guide-beginners-hero {
    background: linear-gradient(135deg, #0066cc 0%, #0052a3 100%);
    background-color: var(--color-primary);
    padding: var(--spacing-5xl) 0 var(--spacing-4xl) 0;
    overflow: hidden;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-hero {
      padding: var(--spacing-6xl) 0 var(--spacing-5xl) 0;
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-hero-title {
    color: var(--color-text-lighter);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-4xl);
    line-height: 1.2;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-hero-title {
      font-size: var(--font-size-5xl);
      margin-bottom: var(--spacing-xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-lead {
    color: rgba(255, 255, 255, 0.95);
    font-size: var(--font-size-base);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-lead {
      font-size: var(--font-size-lg);
      margin-bottom: var(--spacing-2xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-meta {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-sm);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-meta {
      font-size: var(--font-size-base);
      gap: var(--spacing-lg);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-read-time,
  .post-online-learning-guide-beginners .online-learning-guide-beginners-difficulty {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-xs);
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-meta-divider {
    color: rgba(255, 255, 255, 0.6);
  }

  
  .post-online-learning-guide-beginners .online-learning-guide-beginners-section-1 {
    background-color: var(--color-bg-primary);
    padding: var(--spacing-4xl) 0 var(--spacing-3xl) 0;
    overflow: hidden;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-section-1 {
      padding: var(--spacing-5xl) 0 var(--spacing-4xl) 0;
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-content-1 {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    align-items: center;
  }

  @media (min-width: 1024px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-content-1 {
      grid-template-columns: 1fr 1fr;
      gap: var(--spacing-2xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-section-title {
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-2xl);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-section-title {
      font-size: var(--font-size-3xl);
      margin-bottom: var(--spacing-xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-body-text {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-body-text {
      font-size: var(--font-size-base);
      margin-bottom: var(--spacing-xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-text-block {
    display: flex;
    flex-direction: column;
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-benefits-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-benefits-list {
      gap: var(--spacing-lg);
      margin-top: var(--spacing-xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-benefit-item {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-benefit-item {
      font-size: var(--font-size-base);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-benefit-icon {
    color: var(--color-success);
    font-size: var(--icon-lg);
    flex-shrink: 0;
    margin-top: 2px;
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-section-image {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
  }

  @media (min-width: 1024px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-section-image {
      max-height: 450px;
    }
  }

  
  .post-online-learning-guide-beginners .online-learning-guide-beginners-section-2 {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-4xl) 0 var(--spacing-3xl) 0;
    overflow: hidden;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-section-2 {
      padding: var(--spacing-5xl) 0 var(--spacing-4xl) 0;
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-content-2 {
    display: flex;
    flex-direction: column;
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-course-criteria {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-course-criteria {
      grid-template-columns: repeat(2, 1fr);
      gap: var(--spacing-xl);
      margin-top: var(--spacing-2xl);
    }
  }

  @media (min-width: 1024px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-course-criteria {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-criterion {
    background-color: var(--color-bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-criterion {
      padding: var(--spacing-xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-criterion:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-criterion-title {
    color: var(--color-text-primary);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-md);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-criterion-title {
      font-size: var(--font-size-xl);
      margin-bottom: var(--spacing-lg);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-criterion-icon {
    color: var(--color-primary);
    font-size: var(--icon-lg);
    flex-shrink: 0;
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-criterion-text {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-criterion-text {
      font-size: var(--font-size-base);
      line-height: 1.7;
    }
  }

  
  .post-online-learning-guide-beginners .online-learning-guide-beginners-section-3 {
    background-color: var(--color-bg-primary);
    padding: var(--spacing-4xl) 0 var(--spacing-3xl) 0;
    overflow: hidden;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-section-3 {
      padding: var(--spacing-5xl) 0 var(--spacing-4xl) 0;
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-content-3 {
    display: flex;
    flex-direction: column;
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-steps {
      gap: var(--spacing-xl);
      margin-top: var(--spacing-2xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-step {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-lg);
    align-items: flex-start;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-step {
      gap: var(--spacing-xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    border-radius: var(--radius-full);
    flex-shrink: 0;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-step-number {
      width: 3.5rem;
      height: 3.5rem;
      font-size: var(--font-size-2xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-step-content {
    display: flex;
    flex-direction: column;
    padding-top: var(--spacing-xs);
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-step-title {
    color: var(--color-text-primary);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-step-title {
      font-size: var(--font-size-xl);
      margin-bottom: var(--spacing-md);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-step-text {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-step-text {
      font-size: var(--font-size-base);
      line-height: 1.7;
    }
  }

  
  .post-online-learning-guide-beginners .online-learning-guide-beginners-section-4 {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-4xl) 0 var(--spacing-3xl) 0;
    overflow: hidden;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-section-4 {
      padding: var(--spacing-5xl) 0 var(--spacing-4xl) 0;
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-content-4 {
    display: flex;
    flex-direction: column;
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-skills-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-skills-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: var(--spacing-xl);
      margin-top: var(--spacing-2xl);
    }
  }

  @media (min-width: 1024px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-skills-grid {
      grid-template-columns: repeat(3, 1fr);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-skill-card {
    background-color: var(--color-bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    text-align: center;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-skill-card {
      padding: var(--spacing-xl);
      gap: var(--spacing-lg);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-skill-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
    transform: translateY(-4px);
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-skill-icon {
    font-size: var(--icon-2xl);
    color: var(--color-primary);
    margin: 0 auto;
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-skill-name {
    color: var(--color-text-primary);
    font-size: var(--font-size-lg);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-skill-name {
      font-size: var(--font-size-xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-skill-desc {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-skill-desc {
      font-size: var(--font-size-base);
      line-height: 1.7;
    }
  }

  
  .post-online-learning-guide-beginners .online-learning-guide-beginners-section-5 {
    background-color: var(--color-bg-primary);
    padding: var(--spacing-4xl) 0 var(--spacing-3xl) 0;
    overflow: hidden;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-section-5 {
      padding: var(--spacing-5xl) 0 var(--spacing-4xl) 0;
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-content-5 {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    align-items: center;
  }

  @media (min-width: 1024px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-content-5 {
      grid-template-columns: 1fr 1fr;
      gap: var(--spacing-2xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-text-block-alt {
    display: flex;
    flex-direction: column;
    order: 2;
  }

  @media (min-width: 1024px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-text-block-alt {
      order: 1;
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-tips-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-tips-list {
      gap: var(--spacing-xl);
      margin-top: var(--spacing-2xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-tip {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-primary);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-tip {
      padding: var(--spacing-xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-tip-header {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-tip-icon {
    color: var(--color-primary);
    font-size: var(--icon-lg);
    flex-shrink: 0;
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-tip-title {
    color: var(--color-text-primary);
    font-size: var(--font-size-lg);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-tip-title {
      font-size: var(--font-size-xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-tip-text {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-tip-text {
      font-size: var(--font-size-base);
      line-height: 1.7;
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-section-image-alt {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    order: 1;
  }

  @media (min-width: 1024px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-section-image-alt {
      order: 2;
      max-height: 450px;
    }
  }

  
  .post-online-learning-guide-beginners .online-learning-guide-beginners-conclusion {
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.05) 0%, rgba(0, 82, 163, 0.05) 100%);
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-4xl) 0 var(--spacing-3xl) 0;
    border-top: 2px solid var(--color-primary-light);
    overflow: hidden;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-conclusion {
      padding: var(--spacing-5xl) 0 var(--spacing-4xl) 0;
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-conclusion-content {
    display: flex;
    flex-direction: column;
    max-width: 800px;
    margin: 0 auto;
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-conclusion-title {
    color: var(--color-text-primary);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-conclusion-title {
      font-size: var(--font-size-3xl);
      margin-bottom: var(--spacing-xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-conclusion-text {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-conclusion-text {
      font-size: var(--font-size-base);
      line-height: 1.8;
      margin-bottom: var(--spacing-xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-key-takeaways {
    background-color: var(--color-bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-primary-light);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-key-takeaways {
      padding: var(--spacing-xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-takeaway-title {
    color: var(--color-primary);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-takeaway-title {
      font-size: var(--font-size-xl);
      margin-bottom: var(--spacing-lg);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-takeaway-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    list-style: none;
    padding: 0;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-takeaway-list {
      gap: var(--spacing-lg);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-takeaway-item {
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: var(--spacing-md);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-takeaway-item {
      font-size: var(--font-size-base);
      line-height: 1.7;
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-takeaway-item::before {
    content: '';
    color: var(--color-success);
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
  }

  
  .post-online-learning-guide-beginners .online-learning-guide-beginners-related {
    background-color: var(--color-bg-primary);
    padding: var(--spacing-4xl) 0 var(--spacing-3xl) 0;
    border-top: 1px solid var(--color-border);
    overflow: hidden;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-related {
      padding: var(--spacing-5xl) 0 var(--spacing-4xl) 0;
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-related-content {
    display: flex;
    flex-direction: column;
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-related-title {
    color: var(--color-text-primary);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
    text-align: center;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-related-title {
      font-size: var(--font-size-3xl);
      margin-bottom: var(--spacing-lg);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-related-subtitle {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    text-align: center;
    margin-bottom: var(--spacing-xl);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-related-subtitle {
      font-size: var(--font-size-base);
      margin-bottom: var(--spacing-2xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-related-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-related-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: var(--spacing-xl);
    }
  }

  @media (min-width: 1024px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-related-grid {
      grid-template-columns: repeat(3, 1fr);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-related-card {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    text-decoration: none;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-related-card {
      gap: var(--spacing-lg);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-related-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--color-primary);
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-related-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-related-card-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-related-card-content {
      gap: var(--spacing-lg);
      padding: var(--spacing-xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-related-card-title {
    color: var(--color-text-primary);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-related-card-title {
      font-size: var(--font-size-xl);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-related-card-desc {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    flex-grow: 1;
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-related-card-desc {
      font-size: var(--font-size-base);
      line-height: 1.7;
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-related-card-link {
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-sm);
  }

  @media (min-width: 768px) {
    .post-online-learning-guide-beginners .online-learning-guide-beginners-related-card-link {
      font-size: var(--font-size-base);
    }
  }

  .post-online-learning-guide-beginners .online-learning-guide-beginners-related-card:hover .online-learning-guide-beginners-related-card-link {
    color: var(--color-primary-dark);
    gap: var(--spacing-md);
  }

    .post-pivot-tables-advanced-formulas {
      width: 100%;
    }

    
    .pivot-tables-advanced-formulas-breadcrumbs {
      background-color: var(--color-bg-secondary);
      border-bottom: 1px solid var(--color-border);
      overflow: hidden;
    }

    .pivot-tables-advanced-formulas-breadcrumbs .container {
      padding: var(--spacing-md) var(--spacing-lg);
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-breadcrumbs .container {
        padding: var(--spacing-lg) var(--spacing-2xl);
      }
    }

    .pivot-tables-advanced-formulas-breadcrumbs-content {
      display: flex;
      align-items: center;
      gap: var(--spacing-md);
      font-size: var(--font-size-sm);
      flex-wrap: wrap;
    }

    .pivot-tables-advanced-formulas-breadcrumbs a {
      color: var(--color-primary);
      font-weight: var(--font-weight-medium);
      transition: all var(--transition-base);
    }

    .pivot-tables-advanced-formulas-breadcrumbs a:hover {
      color: var(--color-primary-dark);
      text-decoration: underline;
    }

    .pivot-tables-advanced-formulas-breadcrumbs span {
      color: var(--color-text-secondary);
      font-weight: var(--font-weight-medium);
    }

    
    .pivot-tables-advanced-formulas-hero {
      background-color: var(--color-bg-dark);
      padding: 4rem 0;
      overflow: hidden;
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-hero {
        padding: 5.5rem 0;
      }
    }

    @media (min-width: 1024px) {
      .pivot-tables-advanced-formulas-hero {
        padding: 6.5rem 0;
      }
    }

    .pivot-tables-advanced-formulas-hero-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-xl);
      max-width: 800px;
    }

    .pivot-tables-advanced-formulas-hero h1 {
      font-size: 2rem;
      line-height: 1.3;
      color: #ffffff;
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-hero h1 {
        font-size: 2.5rem;
      }
    }

    @media (min-width: 1024px) {
      .pivot-tables-advanced-formulas-hero h1 {
        font-size: 3rem;
      }
    }

    .pivot-tables-advanced-formulas-lead {
      font-size: 1rem;
      line-height: 1.8;
      color: #e0e0e0;
      max-width: 700px;
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-lead {
        font-size: 1.1rem;
      }
    }

    .pivot-tables-advanced-formulas-meta {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-md);
      font-size: var(--font-size-sm);
      color: #b0b0b0;
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-meta {
        flex-direction: row;
        gap: var(--spacing-lg);
        align-items: center;
      }
    }

    
    .pivot-tables-advanced-formulas-intro-section {
      background-color: var(--color-bg-primary);
      padding: 3.5rem 0;
      overflow: hidden;
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-intro-section {
        padding: 5rem 0;
      }
    }

    @media (min-width: 1024px) {
      .pivot-tables-advanced-formulas-intro-section {
        padding: 6rem 0;
      }
    }

    .pivot-tables-advanced-formulas-intro-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-2xl);
      max-width: 900px;
    }

    .pivot-tables-advanced-formulas-intro-section h2 {
      font-size: 1.75rem;
      color: var(--color-text-primary);
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-intro-section h2 {
        font-size: 2rem;
      }
    }

    @media (min-width: 1024px) {
      .pivot-tables-advanced-formulas-intro-section h2 {
        font-size: 2.25rem;
      }
    }

    .pivot-tables-advanced-formulas-intro-section p {
      font-size: var(--font-size-base);
      line-height: 1.8;
      color: var(--color-text-secondary);
      margin-bottom: var(--spacing-lg);
    }

    .pivot-tables-advanced-formulas-intro-section ul {
      list-style: none;
      padding-left: 0;
    }

    .pivot-tables-advanced-formulas-intro-section li {
      display: flex;
      gap: var(--spacing-md);
      margin-bottom: var(--spacing-lg);
      font-size: var(--font-size-base);
      line-height: 1.7;
      color: var(--color-text-secondary);
    }

    .pivot-tables-advanced-formulas-intro-section li::before {
      content: "";
      color: var(--color-primary);
      font-weight: var(--font-weight-bold);
      min-width: 1.5rem;
      flex-shrink: 0;
    }

    
    .pivot-tables-advanced-formulas-features-section {
      background-color: var(--color-bg-tertiary);
      padding: 3.5rem 0;
      overflow: hidden;
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-features-section {
        padding: 5rem 0;
      }
    }

    @media (min-width: 1024px) {
      .pivot-tables-advanced-formulas-features-section {
        padding: 6rem 0;
      }
    }

    .pivot-tables-advanced-formulas-features-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-3xl);
    }

    .pivot-tables-advanced-formulas-features-section h2 {
      font-size: 1.75rem;
      color: var(--color-text-primary);
      margin-bottom: var(--spacing-xl);
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-features-section h2 {
        font-size: 2rem;
      }
    }

    @media (min-width: 1024px) {
      .pivot-tables-advanced-formulas-features-section h2 {
        font-size: 2.25rem;
      }
    }

    .pivot-tables-advanced-formulas-features-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--spacing-lg);
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
      }
    }

    @media (min-width: 1024px) {
      .pivot-tables-advanced-formulas-features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-2xl);
      }
    }

    .pivot-tables-advanced-formulas-feature-item {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-md);
      padding: var(--spacing-lg);
      background-color: var(--color-bg-primary);
      border-radius: var(--radius-lg);
      border: 1px solid var(--color-border);
      transition: all var(--transition-base);
      box-shadow: var(--shadow-sm);
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-feature-item {
        padding: var(--spacing-xl);
      }
    }

    .pivot-tables-advanced-formulas-feature-item:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
      border-color: var(--color-primary);
    }

    .pivot-tables-advanced-formulas-feature-icon {
      font-size: 2rem;
      color: var(--color-primary);
      width: 3rem;
      height: 3rem;
      display: flex;
      align-items: center;
      justify-content: center;
      background-color: var(--color-primary-light);
      border-radius: var(--radius-md);
    }

    .pivot-tables-advanced-formulas-feature-item h3 {
      font-size: 1.25rem;
      color: var(--color-text-primary);
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-feature-item h3 {
        font-size: 1.375rem;
      }
    }

    .pivot-tables-advanced-formulas-feature-item p {
      font-size: var(--font-size-sm);
      line-height: 1.7;
      color: var(--color-text-secondary);
    }

    
    .pivot-tables-advanced-formulas-guide-section {
      background-color: var(--color-bg-primary);
      padding: 3.5rem 0;
      overflow: hidden;
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-guide-section {
        padding: 5rem 0;
      }
    }

    @media (min-width: 1024px) {
      .pivot-tables-advanced-formulas-guide-section {
        padding: 6rem 0;
      }
    }

    .pivot-tables-advanced-formulas-guide-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-2xl);
      max-width: 900px;
    }

    .pivot-tables-advanced-formulas-guide-section h2 {
      font-size: 1.75rem;
      color: var(--color-text-primary);
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-guide-section h2 {
        font-size: 2rem;
      }
    }

    @media (min-width: 1024px) {
      .pivot-tables-advanced-formulas-guide-section h2 {
        font-size: 2.25rem;
      }
    }

    .pivot-tables-advanced-formulas-guide-section p {
      font-size: var(--font-size-base);
      line-height: 1.8;
      color: var(--color-text-secondary);
    }

    .pivot-tables-advanced-formulas-steps {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-xl);
    }

    .pivot-tables-advanced-formulas-step {
      display: flex;
      gap: var(--spacing-lg);
    }

    .pivot-tables-advanced-formulas-step-number {
      display: flex;
      align-items: flex-start;
      justify-content: center;
      width: 2.5rem;
      height: 2.5rem;
      min-width: 2.5rem;
      background-color: var(--color-primary);
      color: #ffffff;
      border-radius: var(--radius-full);
      font-weight: var(--font-weight-bold);
      font-size: var(--font-size-lg);
    }

    .pivot-tables-advanced-formulas-step-content h3 {
      font-size: 1.125rem;
      color: var(--color-text-primary);
      margin-bottom: var(--spacing-sm);
    }

    .pivot-tables-advanced-formulas-step-content p {
      font-size: var(--font-size-sm);
      line-height: 1.7;
      color: var(--color-text-secondary);
    }

    
    .pivot-tables-advanced-formulas-tips-section {
      background-color: var(--color-primary-light);
      padding: 3.5rem 0;
      overflow: hidden;
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-tips-section {
        padding: 5rem 0;
      }
    }

    @media (min-width: 1024px) {
      .pivot-tables-advanced-formulas-tips-section {
        padding: 6rem 0;
      }
    }

    .pivot-tables-advanced-formulas-tips-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-2xl);
      max-width: 900px;
    }

    .pivot-tables-advanced-formulas-tips-section h2 {
      font-size: 1.75rem;
      color: var(--color-text-primary);
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-tips-section h2 {
        font-size: 2rem;
      }
    }

    @media (min-width: 1024px) {
      .pivot-tables-advanced-formulas-tips-section h2 {
        font-size: 2.25rem;
      }
    }

    .pivot-tables-advanced-formulas-tips-section p {
      font-size: var(--font-size-base);
      line-height: 1.8;
      color: var(--color-text-secondary);
    }

    .pivot-tables-advanced-formulas-tip-box {
      display: flex;
      gap: var(--spacing-lg);
      padding: var(--spacing-lg);
      background-color: var(--color-bg-primary);
      border-left: 4px solid var(--color-primary);
      border-radius: var(--radius-lg);
      margin-bottom: var(--spacing-lg);
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-tip-box {
        padding: var(--spacing-xl);
      }
    }

    .pivot-tables-advanced-formulas-tip-icon {
      font-size: 1.5rem;
      color: var(--color-primary);
      min-width: 1.5rem;
      flex-shrink: 0;
    }

    .pivot-tables-advanced-formulas-tip-box h3 {
      font-size: 1rem;
      color: var(--color-text-primary);
      margin-bottom: var(--spacing-sm);
    }

    .pivot-tables-advanced-formulas-tip-box p {
      font-size: var(--font-size-sm);
      line-height: 1.6;
      color: var(--color-text-secondary);
    }

    
    .pivot-tables-advanced-formulas-conclusion-section {
      background-color: var(--color-bg-secondary);
      padding: 3.5rem 0;
      overflow: hidden;
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-conclusion-section {
        padding: 5rem 0;
      }
    }

    @media (min-width: 1024px) {
      .pivot-tables-advanced-formulas-conclusion-section {
        padding: 6rem 0;
      }
    }

    .pivot-tables-advanced-formulas-conclusion-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-xl);
      max-width: 900px;
    }

    .pivot-tables-advanced-formulas-conclusion-section h2 {
      font-size: 1.75rem;
      color: var(--color-text-primary);
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-conclusion-section h2 {
        font-size: 2rem;
      }
    }

    @media (min-width: 1024px) {
      .pivot-tables-advanced-formulas-conclusion-section h2 {
        font-size: 2.25rem;
      }
    }

    .pivot-tables-advanced-formulas-conclusion-section p {
      font-size: var(--font-size-base);
      line-height: 1.8;
      color: var(--color-text-secondary);
      margin-bottom: var(--spacing-lg);
    }

    .pivot-tables-advanced-formulas-conclusion-section strong {
      color: var(--color-text-primary);
      font-weight: var(--font-weight-semibold);
    }

    
    .pivot-tables-advanced-formulas-related-section {
      background-color: var(--color-bg-primary);
      padding: 3.5rem 0;
      overflow: hidden;
      border-top: 1px solid var(--color-border);
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-related-section {
        padding: 5rem 0;
      }
    }

    @media (min-width: 1024px) {
      .pivot-tables-advanced-formulas-related-section {
        padding: 6rem 0;
      }
    }

    .pivot-tables-advanced-formulas-related-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-2xl);
    }

    .pivot-tables-advanced-formulas-related-section h2 {
      font-size: 1.75rem;
      color: var(--color-text-primary);
      margin-bottom: var(--spacing-lg);
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-related-section h2 {
        font-size: 2rem;
      }
    }

    @media (min-width: 1024px) {
      .pivot-tables-advanced-formulas-related-section h2 {
        font-size: 2.25rem;
      }
    }

    .pivot-tables-advanced-formulas-related-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--spacing-lg);
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-related-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
      }
    }

    @media (min-width: 1024px) {
      .pivot-tables-advanced-formulas-related-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-2xl);
      }
    }

    .pivot-tables-advanced-formulas-related-card {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-md);
      overflow: hidden;
      border-radius: var(--radius-xl);
      border: 1px solid var(--color-border);
      background-color: var(--color-bg-primary);
      transition: all var(--transition-base);
      box-shadow: var(--shadow-sm);
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-related-card {
        gap: var(--spacing-lg);
      }
    }

    .pivot-tables-advanced-formulas-related-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
      border-color: var(--color-primary);
    }

    .pivot-tables-advanced-formulas-related-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      background-color: var(--color-bg-tertiary);
    }

    .pivot-tables-advanced-formulas-related-card-content {
      display: flex;
      flex-direction: column;
      gap: var(--spacing-md);
      padding: var(--spacing-lg);
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-related-card-content {
        padding: var(--spacing-xl);
      }
    }

    .pivot-tables-advanced-formulas-related-card h3 {
      font-size: 1.125rem;
      color: var(--color-text-primary);
      line-height: 1.4;
    }

    @media (min-width: 768px) {
      .pivot-tables-advanced-formulas-related-card h3 {
        font-size: 1.25rem;
      }
    }

    .pivot-tables-advanced-formulas-related-card p {
      font-size: var(--font-size-sm);
      line-height: 1.6;
      color: var(--color-text-secondary);
    }

    .pivot-tables-advanced-formulas-related-link {
      display: inline-flex;
      align-items: center;
      gap: var(--spacing-sm);
      margin-top: var(--spacing-sm);
      color: var(--color-primary);
      font-weight: var(--font-weight-semibold);
      font-size: var(--font-size-sm);
      transition: all var(--transition-base);
      text-decoration: none;
    }

    .pivot-tables-advanced-formulas-related-link:hover {
      color: var(--color-primary-dark);
      gap: var(--spacing-md);
    }

    .pivot-tables-advanced-formulas-related-link::after {
      content: "";
      transition: all var(--transition-base);
    }

.info-portal {
  font-family: var(--font-primary);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
}

.info-portal .container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.info-portal-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.info-portal h1 {
  font-family: var(--font-display);
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
  line-height: 1.3;
}

@media (min-width: 768px) {
  .info-portal h1 {
    font-size: var(--font-size-5xl);
  }
}

@media (min-width: 1024px) {
  .info-portal h1 {
    font-size: var(--font-size-6xl);
  }
}

.info-portal h2 {
  font-family: var(--font-display);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-md);
  line-height: 1.4;
}

@media (min-width: 768px) {
  .info-portal h2 {
    font-size: var(--font-size-3xl);
  }
}

@media (min-width: 1024px) {
  .info-portal h2 {
    font-size: var(--font-size-4xl);
  }
}

.info-portal p {
  font-size: var(--font-size-sm);
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

@media (min-width: 768px) {
  .info-portal p {
    font-size: var(--font-size-base);
  }
}

.info-portal .last-updated {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-style: italic;
  margin-bottom: var(--spacing-xl);
  display: inline-block;
}

.info-portal section {
  overflow: hidden;
  padding: var(--spacing-3xl) 0;
}

@media (min-width: 768px) {
  .info-portal section {
    padding: var(--spacing-5xl) 0;
  }
}

@media (min-width: 1024px) {
  .info-portal section {
    padding: var(--spacing-6xl) 0;
  }
}

.info-portal section:nth-child(odd) {
  background-color: var(--color-bg-primary);
}

.info-portal section:nth-child(even) {
  background-color: var(--color-bg-secondary);
}

.info-portal .hero-section {
  background-color: var(--color-bg-primary);
  padding: var(--spacing-3xl) 0;
}

@media (min-width: 768px) {
  .info-portal .hero-section {
    padding: var(--spacing-5xl) 0;
  }
}

@media (min-width: 1024px) {
  .info-portal .hero-section {
    padding: var(--spacing-6xl) 0;
  }
}

.info-portal .hero-section h1 {
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
}

.info-portal .hero-section .last-updated {
  display: block;
}

.info-portal .content-section {
  background-color: var(--color-bg-secondary);
}

.info-portal .content-section h2 {
  color: var(--color-text-primary);
  border-bottom: 3px solid var(--color-primary);
  padding-bottom: var(--spacing-md);
}

.info-portal .content-section p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

.info-portal .content-section ul {
  margin: var(--spacing-md) 0 var(--spacing-lg) var(--spacing-lg);
  color: var(--color-text-secondary);
}

.info-portal .content-section li {
  margin-bottom: var(--spacing-sm);
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.info-portal .contact-section {
  background-color: var(--color-bg-tertiary);
}

.info-portal .contact-section h2 {
  color: var(--color-text-primary);
  border-bottom: 3px solid var(--color-primary);
  padding-bottom: var(--spacing-md);
}

.info-portal .contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-lg);
}

@media (min-width: 768px) {
  .info-portal .contact-info {
    flex-direction: row;
    gap: var(--spacing-2xl);
  }
}

.info-portal .contact-item {
  flex: 1;
  padding: var(--spacing-lg);
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-primary);
}

.info-portal .contact-item h3 {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.info-portal .contact-item p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

@media (min-width: 768px) {
  .info-portal .contact-item {
    padding: var(--spacing-xl);
  }

  .info-portal .contact-item h3 {
    font-size: var(--font-size-xl);
  }
}

.info-portal a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

.info-portal a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

.info-portal .content-section a {
  color: var(--color-primary);
}

.info-portal .container {
  padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
  .info-portal .container {
    padding: 0 var(--spacing-xl);
  }
}

@media (min-width: 1024px) {
  .info-portal .container {
    padding: 0 var(--spacing-2xl);
  }
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Poppins:wght@600;700;800&display=swap');

  :root {
    --color-primary: #0066cc;
    --color-primary-dark: #0052a3;
    --color-primary-light: #e6f0ff;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-tertiary: #f0f4f8;
    --color-bg-dark: #0a0e27;
    --color-bg-accent: #e6f0ff;
    --color-text-primary: #1a1a1a;
    --color-text-secondary: #4a5568;
    --color-text-light: #e0e0e0;
    --color-text-lighter: #f8f9fa;
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;
    --color-divider: #d1d5db;
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
    --spacing-3xl: 3rem;
    --spacing-4xl: 4rem;
    --spacing-5xl: 5rem;
    --spacing-6xl: 6rem;
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-full: 9999px;
    --icon-sm: 1.25rem;
    --icon-md: 1.5rem;
    --icon-lg: 2rem;
    --icon-xl: 2.5rem;
    --icon-2xl: 3rem;
    --icon-3xl: 3.5rem;
    --transition-fast: 150ms ease-in-out;
    --transition-base: 200ms ease-in-out;
    --transition-slow: 300ms ease-in-out;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-bg: 400;
    --z-modal: 500;
  }

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

  body {
    font-family: var(--font-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  .container {
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
  }

  @media (min-width: 768px) {
    .container {
      padding: 0 var(--spacing-lg);
    }
  }

  @media (min-width: 1024px) {
    .container {
      padding: 0 var(--spacing-xl);
    }
  }

  
  .thank-hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    padding: var(--spacing-5xl) 0;
    overflow: hidden;
    position: relative;
  }

  @media (min-width: 768px) {
    .thank-hero {
      padding: var(--spacing-6xl) 0;
    }
  }

  .thank-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    pointer-events: none;
  }

  @media (min-width: 768px) {
    .thank-hero::before {
      width: 600px;
      height: 600px;
    }
  }

  .thank-hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    pointer-events: none;
  }

  .thank-hero-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--spacing-xl);
  }

  @media (min-width: 768px) {
    .thank-hero-content {
      gap: var(--spacing-2xl);
    }
  }

  .thank-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    animation: iconPulse 2s ease-in-out infinite;
  }

  @media (min-width: 768px) {
    .thank-icon {
      width: 100px;
      height: 100px;
    }
  }

  .thank-icon i {
    font-size: 2.5rem;
    color: var(--color-text-lighter);
  }

  @media (min-width: 768px) {
    .thank-icon i {
      font-size: 3.5rem;
    }
  }

  @keyframes iconPulse {
    0%, 100% {
      transform: scale(1);
      box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.3);
    }
    50% {
      transform: scale(1.05);
      box-shadow: 0 0 0 20px rgba(255, 255, 255, 0);
    }
  }

  .thank-hero h1 {
    font-family: var(--font-display);
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-lighter);
    line-height: 1.2;
  }

  @media (min-width: 768px) {
    .thank-hero h1 {
      font-size: var(--font-size-6xl);
    }
  }

  .thank-lead {
    font-size: var(--font-size-lg);
    color: rgba(248, 249, 250, 0.95);
    max-width: 600px;
    line-height: 1.7;
  }

  @media (min-width: 768px) {
    .thank-lead {
      font-size: var(--font-size-xl);
    }
  }

  
  .thank-next {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-5xl) 0;
    overflow: hidden;
  }

  @media (min-width: 768px) {
    .thank-next {
      padding: var(--spacing-6xl) 0;
    }
  }

  .thank-next-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4xl);
  }

  @media (min-width: 768px) {
    .thank-next-content {
      gap: var(--spacing-5xl);
    }
  }

  .thank-next h2 {
    font-family: var(--font-display);
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    text-align: center;
  }

  @media (min-width: 768px) {
    .thank-next h2 {
      font-size: var(--font-size-5xl);
    }
  }

  
  .thank-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  @media (min-width: 768px) {
    .thank-steps {
      grid-template-columns: repeat(3, 1fr);
      gap: var(--spacing-2xl);
    }
  }

  .step-card {
    background-color: var(--color-bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border-left: 4px solid var(--color-primary);
  }

  @media (min-width: 768px) {
    .step-card {
      padding: var(--spacing-2xl);
      gap: var(--spacing-lg);
    }
  }

  .step-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
  }

  .step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--color-primary-light);
    border-radius: 50%;
    font-family: var(--font-display);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
  }

  .step-card h3 {
    font-family: var(--font-display);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
  }

  @media (min-width: 768px) {
    .step-card h3 {
      font-size: var(--font-size-2xl);
    }
  }

  .step-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
  }

  @media (min-width: 768px) {
    .step-card p {
      font-size: var(--font-size-base);
    }
  }

  
  .thank-info-box {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, rgba(0, 102, 204, 0.05) 100%);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    overflow: hidden;
  }

  @media (min-width: 768px) {
    .thank-info-box {
      padding: var(--spacing-3xl);
    }
  }

  .info-box-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .thank-info-box h3 {
    font-family: var(--font-display);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary-dark);
  }

  @media (min-width: 768px) {
    .thank-info-box h3 {
      font-size: var(--font-size-2xl);
    }
  }

  .thank-info-box p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
  }

  @media (min-width: 768px) {
    .thank-info-box p {
      font-size: var(--font-size-base);
    }
  }

  
  .thank-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
  }

  
  .thank-features {
    background-color: var(--color-bg-primary);
    padding: var(--spacing-5xl) 0;
    overflow: hidden;
  }

  @media (min-width: 768px) {
    .thank-features {
      padding: var(--spacing-6xl) 0;
    }
  }

  .thank-features-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4xl);
  }

  @media (min-width: 768px) {
    .thank-features-content {
      gap: var(--spacing-5xl);
    }
  }

  .thank-features h2 {
    font-family: var(--font-display);
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    text-align: center;
  }

  @media (min-width: 768px) {
    .thank-features h2 {
      font-size: var(--font-size-5xl);
    }
  }

  .features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  @media (min-width: 768px) {
    .features-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: var(--spacing-2xl);
    }
  }

  @media (min-width: 1024px) {
    .features-grid {
      grid-template-columns: repeat(4, 1fr);
      gap: var(--spacing-2xl);
    }
  }

  .feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    background-color: var(--color-bg-tertiary);
    transition: all var(--transition-base);
  }

  @media (min-width: 768px) {
    .feature-item {
      padding: var(--spacing-2xl);
      gap: var(--spacing-lg);
    }
  }

  .feature-item:hover {
    background-color: var(--color-bg-secondary);
    transform: translateY(-4px);
  }

  .feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-lg);
  }

  @media (min-width: 768px) {
    .feature-icon {
      width: 70px;
      height: 70px;
    }
  }

  .feature-icon i {
    font-size: var(--icon-2xl);
    color: var(--color-text-lighter);
  }

  @media (min-width: 768px) {
    .feature-icon i {
      font-size: var(--icon-3xl);
    }
  }

  .feature-item h4 {
    font-family: var(--font-display);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
  }

  @media (min-width: 768px) {
    .feature-item h4 {
      font-size: var(--font-size-xl);
    }
  }

  .feature-item p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
  }

  @media (min-width: 768px) {
    .feature-item p {
      font-size: var(--font-size-base);
    }
  }

  
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    font-family: var(--font-primary);
    gap: var(--spacing-sm);
  }

  @media (min-width: 768px) {
    .btn {
      padding: var(--spacing-md) var(--spacing-xl);
      font-size: var(--font-size-base);
    }
  }

  .btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-lighter);
  }

  .btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
  }

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

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Poppins:wght@600;700;800&display=swap');

  :root {
    --color-primary: #0066cc;
    --color-primary-dark: #0052a3;
    --color-primary-light: #e6f0ff;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-tertiary: #f0f4f8;
    --color-bg-dark: #0a0e27;
    --color-bg-accent: #e6f0ff;
    --color-text-primary: #1a1a1a;
    --color-text-secondary: #4a5568;
    --color-text-light: #e0e0e0;
    --color-text-lighter: #f8f9fa;
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;
    --color-divider: #d1d5db;
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
    --spacing-3xl: 3rem;
    --spacing-4xl: 4rem;
    --spacing-5xl: 5rem;
    --spacing-6xl: 6rem;
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-full: 9999px;
    --icon-sm: 1.25rem;
    --icon-md: 1.5rem;
    --icon-lg: 2rem;
    --icon-xl: 2.5rem;
    --icon-2xl: 3rem;
    --icon-3xl: 3.5rem;
    --transition-fast: 150ms ease-in-out;
    --transition-base: 200ms ease-in-out;
    --transition-slow: 300ms ease-in-out;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-bg: 400;
    --z-modal: 500;
  }

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

  body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
  }

  .container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
  }

  @media (min-width: 768px) {
    .container {
      padding: 0 var(--spacing-lg);
    }
  }

  @media (min-width: 1024px) {
    .container {
      padding: 0 var(--spacing-xl);
    }
  }

  
  .error-hero-section {
    background-color: var(--color-bg-dark);
    overflow: hidden;
    padding: var(--spacing-4xl) 0;
  }

  @media (min-width: 768px) {
    .error-hero-section {
      padding: var(--spacing-5xl) 0;
    }
  }

  @media (min-width: 1024px) {
    .error-hero-section {
      padding: var(--spacing-6xl) 0;
    }
  }

  .error-hero-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3xl);
    align-items: center;
    text-align: center;
  }

  @media (min-width: 1024px) {
    .error-hero-content {
      flex-direction: row;
      gap: var(--spacing-4xl);
      text-align: left;
      align-items: center;
    }
  }

  .error-illustration {
    flex: 0 0 auto;
    width: 100%;
    max-width: 300px;
  }

  @media (min-width: 1024px) {
    .error-illustration {
      flex: 1;
      max-width: 400px;
    }
  }

  .error-svg {
    width: 100%;
    height: auto;
    display: block;
  }

  .error-bg-circle {
    fill: var(--color-primary-light);
    animation: float-circle 4s ease-in-out infinite;
  }

  .chart-group {
    animation: pulse-chart 2.5s ease-in-out infinite;
  }

  .chart-bar {
    fill: var(--color-primary);
    animation: wave-bar 2s ease-in-out infinite;
  }

  .chart-bar-1 {
    animation-delay: 0s;
  }

  .chart-bar-2 {
    animation-delay: 0.2s;
  }

  .chart-bar-3 {
    animation-delay: 0.4s;
  }

  .chart-line {
    stroke: var(--color-primary);
    stroke-linecap: round;
    fill: none;
    animation: draw-line 2s ease-in-out infinite;
  }

  .chart-line-1 {
    animation-delay: 0.1s;
  }

  .chart-line-2 {
    animation-delay: 0.3s;
  }

  .excel-cells {
    animation: float-cells 3s ease-in-out infinite;
  }

  .cell {
    fill: none;
    stroke: var(--color-primary);
    stroke-width: 2;
    animation: float-cell 3s ease-in-out infinite;
  }

  .cell-1 {
    animation-delay: 0s;
  }

  .cell-2 {
    animation-delay: 0.4s;
  }

  .cell-3 {
    animation-delay: 0.8s;
  }

  .cell-text {
    fill: var(--color-primary);
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: var(--font-weight-bold);
    text-anchor: middle;
    pointer-events: none;
  }

  .error-circle {
    fill: none;
    stroke: var(--color-error);
    stroke-width: 2;
    animation: pulse-error 2s ease-in-out infinite;
  }

  .error-cross {
    stroke: var(--color-error);
    animation: rotate-cross 2.5s ease-in-out infinite;
  }

  .error-content {
    flex: 1;
  }

  .error-code {
    font-family: var(--font-display);
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-extrabold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1;
  }

  @media (min-width: 768px) {
    .error-code {
      font-size: var(--font-size-6xl);
    }
  }

  .error-title {
    font-family: var(--font-display);
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-lighter);
    margin-bottom: var(--spacing-lg);
  }

  @media (min-width: 768px) {
    .error-title {
      font-size: var(--font-size-5xl);
    }
  }

  .error-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
  }

  @media (min-width: 768px) {
    .error-subtitle {
      font-size: var(--font-size-xl);
    }
  }

  .error-description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.8;
    opacity: 0.9;
  }

  @media (min-width: 768px) {
    .error-description {
      font-size: var(--font-size-lg);
    }
  }

  .error-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
  }

  @media (min-width: 768px) {
    .error-actions {
      flex-direction: row;
      justify-content: center;
    }

    .error-hero-content {
      justify-content: flex-start;
    }

    .error-actions {
      justify-content: flex-start;
    }
  }

  
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
  }

  @media (min-width: 768px) {
    .btn {
      padding: var(--spacing-md) var(--spacing-xl);
      font-size: var(--font-size-base);
    }
  }

  .btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-lighter);
  }

  .btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
  }

  .btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
  }

  .btn-outline:hover {
    background-color: var(--color-primary-light);
    transform: translateY(-2px);
  }

  .btn-large {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: var(--font-size-lg);
  }

  @media (min-width: 768px) {
    .btn-large {
      padding: var(--spacing-lg) var(--spacing-3xl);
      font-size: var(--font-size-xl);
    }
  }

  
  .error-suggestions-section {
    background-color: var(--color-bg-primary);
    overflow: hidden;
    padding: var(--spacing-4xl) 0;
  }

  @media (min-width: 768px) {
    .error-suggestions-section {
      padding: var(--spacing-5xl) 0;
    }
  }

  @media (min-width: 1024px) {
    .error-suggestions-section {
      padding: var(--spacing-6xl) 0;
    }
  }

  .error-suggestions-content {
    display: flex;
    flex-direction: column;
  }

  .suggestions-title {
    font-family: var(--font-display);
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-3xl);
    text-align: center;
  }

  @media (min-width: 768px) {
    .suggestions-title {
      font-size: var(--font-size-4xl);
      margin-bottom: var(--spacing-4xl);
    }
  }

  .suggestions-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  @media (min-width: 768px) {
    .suggestions-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: var(--spacing-2xl);
    }
  }

  @media (min-width: 1024px) {
    .suggestions-grid {
      grid-template-columns: repeat(4, 1fr);
      gap: var(--spacing-2xl);
    }
  }

  .suggestion-card {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-2xl);
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
    text-align: center;
    transition: all var(--transition-base);
  }

  @media (min-width: 768px) {
    .suggestion-card {
      padding: var(--spacing-2xl);
      gap: var(--spacing-lg);
    }
  }

  @media (min-width: 1024px) {
    .suggestion-card {
      padding: var(--spacing-2xl);
    }
  }

  .suggestion-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
  }

  .suggestion-icon {
    font-size: var(--icon-2xl);
    color: var(--color-primary);
  }

  @media (min-width: 768px) {
    .suggestion-icon {
      font-size: var(--icon-3xl);
    }
  }

  .suggestion-card h4 {
    font-family: var(--font-display);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
  }

  @media (min-width: 768px) {
    .suggestion-card h4 {
      font-size: var(--font-size-xl);
    }
  }

  .suggestion-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
  }

  @media (min-width: 768px) {
    .suggestion-card p {
      font-size: var(--font-size-base);
    }
  }

  
  .error-cta-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    overflow: hidden;
    padding: var(--spacing-4xl) 0;
    position: relative;
  }

  @media (min-width: 768px) {
    .error-cta-section {
      padding: var(--spacing-5xl) 0;
    }
  }

  @media (min-width: 1024px) {
    .error-cta-section {
      padding: var(--spacing-6xl) 0;
    }
  }

  .error-cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 400px;
    height: 400px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(50%, -50%);
  }

  .error-cta-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
    align-items: center;
    text-align: center;
  }

  @media (min-width: 768px) {
    .error-cta-content {
      flex-direction: row;
      justify-content: space-between;
      align-items: center;
      text-align: left;
      gap: var(--spacing-3xl);
    }
  }

  .cta-text {
    flex: 1;
  }

  .cta-text h3 {
    font-family: var(--font-display);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-lighter);
    margin-bottom: var(--spacing-md);
  }

  @media (min-width: 768px) {
    .cta-text h3 {
      font-size: var(--font-size-3xl);
    }
  }

  .cta-text p {
    font-size: var(--font-size-base);
    color: var(--color-text-lighter);
    line-height: 1.7;
    opacity: 0.95;
  }

  @media (min-width: 768px) {
    .cta-text p {
      font-size: var(--font-size-lg);
    }
  }

  .error-cta-section .btn-primary {
    background-color: var(--color-bg-primary);
    color: var(--color-primary);
    white-space: nowrap;
  }

  .error-cta-section .btn-primary:hover {
    background-color: var(--color-bg-secondary);
    box-shadow: var(--shadow-xl);
  }

  
  @keyframes float-circle {
    0%, 100% {
      transform: translateY(0px);
    }
    50% {
      transform: translateY(-20px);
    }
  }

  @keyframes pulse-chart {
    0%, 100% {
      opacity: 1;
    }
    50% {
      opacity: 0.7;
    }
  }

  @keyframes wave-bar {
    0%, 100% {
      transform: scaleY(1);
    }
    50% {
      transform: scaleY(1.2);
    }
  }

  @keyframes draw-line {
    0%, 100% {
      stroke-dashoffset: 100;
    }
    50% {
      stroke-dashoffset: 0;
    }
  }

  @keyframes float-cells {
    0%, 100% {
      transform: translateY(0px);
    }
    50% {
      transform: translateY(-15px);
    }
  }

  @keyframes float-cell {
    0%, 100% {
      transform: translateY(0px) rotate(0deg);
    }
    50% {
      transform: translateY(-15px) rotate(5deg);
    }
  }

  @keyframes pulse-error {
    0%, 100% {
      r: 30;
      stroke-width: 2;
    }
    50% {
      r: 35;
      stroke-width: 1.5;
    }
  }

  @keyframes rotate-cross {
    0%, 100% {
      transform: rotate(0deg);
    }
    50% {
      transform: rotate(10deg);
    }
  }

  
  a:focus-visible,
  .btn:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
  }

  @media (prefers-reduced-motion: reduce) {
    .error-bg-circle,
    .chart-group,
    .chart-bar,
    .chart-line,
    .excel-cells,
    .cell,
    .error-circle,
    .error-cross,
    .btn,
    .suggestion-card {
      animation: none !important;
      transition: none !important;
    }
  }