body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-background);
  line-height: 1.6;
}

.feature-background {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, #000 0%, #0a0a0a 100%);
}

.feature-background::before {
  content: '';
  position: fixed;
  top: -150px;
  right: -150px;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle,
    rgba(247, 153, 56, 0.35) 0%,
    rgba(247, 153, 56, 0.06) 70%,
    transparent 100%);
  pointer-events: none;
}

.feature-page {
  padding-top: var(--header-height);
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}


.feature-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-3xl) var(--space-xl) var(--space-xl);
  position: relative;
  overflow: hidden;
}

.feature-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--orange-800) 20%,
    var(--orange-600) 50%,
    var(--orange-800) 80%,
    transparent 100%);
}

.feature-hero-content {
  text-align: center;
  max-width: 800px;
  margin-bottom: var(--space-xl);
}

.feature-hero-animation {
  width: 100%;
  max-width: 1000px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.feature-hero-animation::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: radial-gradient(circle,
    rgba(247, 153, 56, 0.15) 0%,
    rgba(247, 153, 56, 0.05) 40%,
    transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-lg);
  color: var(--color-primary);
}

.feature-icon svg {
  width: 100%;
  height: 100%;
}

.feature-headline {
  font-family: var(--font-brand);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
  color: var(--color-text);
}

.feature-headline .highlight {
  color: var(--color-primary);
  display: block;
}

.feature-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  color: var(--color-text-secondary);
  line-height: 1.6;
}


.feature-highlights {
  padding: var(--space-3xl) 0;
  border-bottom: 1px solid var(--color-border);
}

.highlights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  list-style: none;
  padding: 0;
  margin: 0;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: linear-gradient(135deg, var(--orange-950) 0%, transparent 60%);
  border: 1px solid var(--orange-800);
  border-radius: var(--sp-card-radius);
  transition: all var(--transition-normal);
}

.highlight-item:hover {
  border-color: var(--orange-600);
  transform: translateY(-2px);
}

.highlight-bullet {
  color: var(--color-primary);
  font-size: 1.25rem;
  flex-shrink: 0;
}

.highlight-text {
  color: var(--color-text);
  font-size: 1rem;
  line-height: 1.5;
}


.feature-section {
  padding: var(--space-4xl) 0;
  border-bottom: 1px solid var(--color-border);
}

.feature-section:last-of-type {
  border-bottom: none;
}

.section-title {
  font-family: var(--font-brand);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
}

.section-content {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
  max-width: 800px;
  margin-bottom: var(--space-2xl);
}

.section-items {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.section-item {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-xl);
  background: linear-gradient(135deg, var(--orange-950) 0%, transparent 60%);
  border: 1px solid var(--orange-900);
  border-radius: var(--sp-card-radius);
  transition: all var(--transition-normal);
}

.section-item:hover {
  border-color: var(--orange-700);
  transform: translateY(-2px);
}

.item-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  color: var(--color-primary);
}

.item-icon svg {
  width: 100%;
  height: 100%;
}

.item-content h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.item-content p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin: 0;
}


.related-features {
  padding: var(--space-4xl) 0;
  border-top: 1px solid var(--color-border);
}

.related-features h2 {
  font-family: var(--font-brand);
  font-size: 1.75rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.related-card {
  display: block;
  text-decoration: none;
  padding: var(--space-xl);
  background: var(--sp-card-bg-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--sp-card-radius);
  transition: all var(--transition-normal);
  position: relative;
}

.related-card:hover {
  text-decoration: none;
  border-color: var(--orange-600);
  transform: translateY(-4px);
  box-shadow: var(--sp-card-shadow-hover);
}

.related-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.related-card p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.related-arrow {
  color: var(--color-primary);
  font-size: 1.25rem;
  opacity: 0;
  transition: all var(--transition-normal);
  position: absolute;
  bottom: var(--space-lg);
  right: var(--space-lg);
}

.related-card:hover .related-arrow {
  opacity: 1;
  transform: translateX(4px);
}


.feature-final-cta {
  padding: var(--space-4xl) 0;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.feature-final-cta h2 {
  font-family: var(--font-brand);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: var(--space-md);
}

.feature-final-cta p {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

.cta-group {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}


.primary-cta {
  display: inline-block;
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--orange-600), var(--orange-500));
  color: var(--color-text-on-primary);
  font-family: var(--font-brand);
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  box-shadow: 0 4px 20px rgba(247, 153, 56, 0.3);
}

.primary-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(247, 153, 56, 0.4);
  text-decoration: none;
}

.secondary-cta {
  display: inline-block;
  padding: 14px 32px;
  background: transparent;
  color: var(--color-primary);
  font-family: var(--font-brand);
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.secondary-cta:hover {
  background: rgba(247, 153, 56, 0.1);
  text-decoration: none;
}


@media (max-width: 1024px) {
  .feature-hero {
    padding: var(--space-2xl) var(--space-lg);
  }

  .feature-hero-animation {
    max-width: 700px;
  }
}


@media (max-width: 768px) {
  .feature-icon {
    width: 56px;
    height: 56px;
  }

  .feature-headline {
    font-size: 1.75rem;
  }

  .feature-highlights {
    padding: var(--space-2xl) 0;
  }

  .highlights-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .highlight-item {
    padding: var(--space-md);
  }

  .feature-section {
    padding: var(--space-2xl) 0;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .section-items {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .section-item {
    flex-direction: column;
    gap: var(--space-md);
    padding: var(--space-lg);
  }

  .item-icon {
    width: 32px;
    height: 32px;
  }

  .related-features {
    padding: var(--space-2xl) 0;
  }

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

  .feature-final-cta {
    padding: var(--space-2xl) 0;
  }

  .cta-group {
    flex-direction: column;
    align-items: center;
  }

  .feature-hero-animation {
    min-height: 300px;
  }

  .feature-hero-animation::before {
    width: 350px;
    height: 350px;
  }
}


@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }

  .feature-hero {
    padding: var(--space-xl) var(--space-md);
  }

  .feature-subtitle {
    font-size: 1rem;
  }
}


.highlight-link {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  text-decoration: none;
  color: inherit;
  width: 100%;
  height: 100%;
}

.highlight-link:hover {
  text-decoration: none;
}


.detail-section {
  padding: var(--space-4xl) 0;
  border-bottom: 1px solid var(--color-border);
  scroll-margin-top: calc(var(--header-height) + var(--space-lg));
}

.detail-section .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.detail-section--with-visual .container {
  grid-template-columns: 1fr 1fr;
  align-items: center;
}

.detail-section--visual-left .detail-visual {
  order: -1;
}

.detail-title {
  font-family: var(--font-brand);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
}

.detail-text {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.detail-text p {
  margin-bottom: var(--space-lg);
}

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

.detail-bullets {
  margin-top: var(--space-xl);
  padding-left: 0;
  list-style: none;
}

.detail-bullets li {
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
  padding-left: var(--space-lg);
  position: relative;
}

.detail-bullets li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

.detail-bullets li strong {
  color: var(--color-text);
}

.detail-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.detail-visual svg {
  width: 100%;
  height: auto;
}


.detail-visual .visual-desktop {
  display: block;
  max-width: 500px;
}


.detail-visual .visual-mobile {
  display: none;
  max-width: 320px;
}


.detail-section:not(.detail-section--with-visual) .container {
  max-width: 800px;
}


@media (max-width: 768px) {
  .detail-section--with-visual .container {
    grid-template-columns: 1fr;
  }

  .detail-section--visual-left .detail-visual {
    order: 0;
  }

  .detail-visual {
    margin-top: var(--space-xl);
    width: 100%;
  }

  .detail-visual svg {
    width: 100%;
    height: auto;
  }

  
  .detail-visual .visual-desktop {
    display: none;
  }

  .detail-visual .visual-mobile {
    display: block;
    width: 100%;
  }
}