:root {
  --color-primary: #333333;
  --color-accent: #666666;
  --color-bg: #f7f7f7;
  --color-text: #222222;
  --color-light-muted: #cccccc;
  --font-header: 'Merriweather', serif;
  --font-body: 'Lora', serif;
  --container-max-width: 1100px;
  --section-spacing: 98px;
  --card-spacing: 49px;
  --feature-spacing: 33px;
}

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

body {
  font-family: 'Ubuntu', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.7;
  background-color: var(--color-bg);
}

.container {
  max-width: var(--container-max-width);
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Ubuntu', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 400;
  color: var(--color-primary);
}

h1, .display-4, .display-5 {
  font-size: 2.5rem;
}

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

.btn-primary:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
}

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

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

.text-primary {
  color: var(--color-primary) !important;
}

.bg-primary {
  background-color: var(--color-primary) !important;
}

.bg-accent {
  background-color: var(--color-accent) !important;
}

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

.logo-img {
  max-width: 51px;
  height: auto;
}

img:not(.logo-img):not(.logo) {
  max-width: 100%;
  height: auto;
}

.navbar {
  padding: 1rem 0;
}

.navbar-brand .site-name {
  color: var(--color-primary);
  font-size: 1.25rem;
}

.nav-link {
  color: var(--color-text);
  font-weight: 500;
  padding: 0.5rem 1rem;
}

.nav-link:hover {
  color: var(--color-accent);
}

.hero-section {
  background: linear-gradient(135deg, var(--color-bg) 0%, #f5ebe0 100%);
  padding: 102px 0;
}

.min-vh-85 {
  min-height: 85vh;
}

.reading-context-badge {
  position: absolute;
  top: 17px;
  right: 23px;
  background: white;
  padding: 7px 20px;
  border-radius: 8px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.1);
  font-size: 0.875rem;
}

.feature-card, .service-card, .value-card, .timeline-card {
  padding: 2rem;
  background: white;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover, .service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 22px rgba(0,0,0,0.1);
}

.comparison-card {
  padding: 2rem;
  background: white;
  border-radius: 11px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  position: relative;
}

.comparison-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 8px 20px;
  border-radius: 23px;
  font-size: 0.875rem;
  font-weight: 600;
  pointer-events: none;
}

.eink-card {
  border: 2px solid var(--color-primary);
}

.lcd-card {
  border: 2px solid #e5e7eb;
}

.bookstore-ui-preview {
  position: relative;
}

.ui-features-overlay {
  position: absolute;
  bottom: 20px;
  left: 21px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ui-feature-badge {
  background: white;
  padding: 8px 14px;
  border-radius: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  font-size: 0.875rem;
  pointer-events: none;
}

.category-badge {
  display: block;
  padding: 7px 18px;
  background: white;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  text-align: center;
  text-decoration: none;
  color: var(--color-text);
  transition: all 0.3s ease;
}

.category-badge:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: #f9fafb;
}

.testimonial-card {
  padding: 2rem;
  background: white;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.testimonial-avatar {
  width: 48px;
  height: 47px;
  border-radius: 50%;
  object-fit: cover;
}

.team-card {
  padding: 1.5rem;
  background: white;
  border-radius: 12px;
  transition: transform 0.3s ease;
}

.team-card:hover {
  transform: translateY(-5px);
}

.team-image img {
  width: 150px;
  height: 150px;
  object-fit: cover;
  margin: 0 auto;
}

.product-card, .accessory-card {
  padding: 1.5rem;
  background: white;
  border-radius: 13px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  position: relative;
}

.product-badge, .bundle-badge {
  position: absolute;
  top: 14px;
  right: 13px;
  background: var(--color-accent);
  color: white;
  padding: 5px 14px;
  border-radius: 19px;
  font-size: 0.75rem;
  font-weight: 600;
  pointer-events: none;
}

.product-specs .spec-item {
  font-size: 0.875rem;
  margin-bottom: 8px;
  color: var(--color-light-muted);
}

.book-card {
  text-align: center;
  transition: transform 0.3s ease;
}

.book-card:hover {
  transform: scale(1.05);
}

.book-rating {
  font-size: 0.875rem;
}

.pricing-card {
  padding: 2.5rem 2rem;
  background: white;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  border: 2px solid transparent;
  transition: all 0.3s ease;
}

.pricing-card.featured {
  border-color: var(--color-primary);
  box-shadow: 0 8px 25px rgba(0,0,0,0.1);
  position: relative;
}

.featured-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: white;
  padding: 5px 18px;
  border-radius: 22px;
  font-size: 0.875rem;
  font-weight: 600;
  pointer-events: none;
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 17px rgba(0,0,0,0.1);
}

.case-study-card, .blog-card {
  padding: 2rem;
  background: white;
  border-radius: 11px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.support-option-card {
  padding: 2rem;
  background: white;
  border-radius: 13px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  transition: transform 0.3s ease;
}

.support-option-card:hover {
  transform: translateY(-5px);
}

.footer {
  margin-top: var(--section-spacing);
}

.contact-form .form-control,
.contact-form .form-select {
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid #d1d5db;
}

.contact-form .form-control:focus,
.contact-form .form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 0.2rem rgba(68, 64, 60, 0.15);
}

.contact-info-card {
  padding: 2rem;
  background: white;
  border-radius: 14px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.article-text {
  font-size: 1.125rem;
  line-height: 1.8;
}

.article-text h2 {
  margin-top: 3rem;
  margin-bottom: 1.5rem;
}

.article-text p {
  margin-bottom: 1.5rem;
}

.legal-text {
  font-size: 1rem;
  line-height: 1.7;
}

.legal-text h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.legal-text p {
  margin-bottom: 1rem;
}

.legal-text ul {
  margin: 1rem 0 1.5rem 2rem;
}

.legal-text li {
  margin-bottom: 0.5rem;
}

@media (max-width: 991px) {
  .hero-section {
    padding: 59px 0;
  }

  .min-vh-85 {
    min-height: auto;
  }

  h1, .display-4, .display-5 {
    font-size: 2rem;
  }

  body {
    font-size: 1rem;
  }

  .navbar-brand .site-name {
    font-size: 1.1rem;
  }
}

@media (max-width: 767px) {
  :root {
    --section-spacing: 60px;
    --card-spacing: 29px;
  }

  .hero-section {
    padding: 40px 0;
  }

  h1, .display-4, .display-5 {
    font-size: 1.75rem;
  }

  .feature-card, .service-card {
    padding: 1.5rem;
  }

  .team-image img {
    width: 120px;
    height: 120px;
  }
}

.accordion-button {
  font-family: 'Ubuntu', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 500;
  color: var(--color-primary);
}

.accordion-button:not(.collapsed) {
  background-color: #f5ebe0;
  color: var(--color-primary);
}

.accordion-button:focus {
  box-shadow: 0 0 0 0.2rem rgba(68, 64, 60, 0.15);
  border-color: var(--color-primary);
}

::selection {
  background-color: var(--color-accent);
  color: white;
}

.btn {
  border-radius: 8px;
  padding: 0.5rem 1.5rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.btn-lg {
  padding: 0.75rem 2rem;
  font-size: 1.1rem;
}

.shadow {
  box-shadow: 0 4px 11px rgba(0,0,0,0.08) !important;
}

.shadow-lg {
  box-shadow: 0 8px 24px rgba(0,0,0,0.12) !important;
}

.rounded-3 {
  border-radius: 11px !important;
}

.rounded-circle {
  border-radius: 50% !important;
}