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

:root {
  --color-warm-white: #faf8f5;
  --color-deep-graphite: #2a3a3f;
  --color-ink-charcoal: #1a2228;
  --color-ocean-teal: #5b9ba8;
  --color-soft-sand: #e8e4dd;
  --color-pale-mist: #d4cfc6;
  --color-text: #2a3a3f;
  --color-border: #d4cfc6;
}

html, body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: var(--color-warm-white);
  color: var(--color-text);
  line-height: 1.6;
}

a {
  color: var(--color-ocean-teal);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: #4a7a85;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-deep-graphite);
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 1.2rem;
}

h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.3rem;
  margin-bottom: 0.8rem;
}

p {
  margin-bottom: 1rem;
  line-height: 1.6;
}

header {
  background: linear-gradient(135deg, var(--color-ink-charcoal) 0%, #1e3438 100%);
  color: white;
  padding: 1.5rem 2rem;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  letter-spacing: 0.5px;
}

.logo a {
  color: white;
  transition: opacity 0.3s ease;
}

.logo a:hover {
  opacity: 0.9;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

nav a {
  color: white;
  position: relative;
  padding-bottom: 0.3rem;
  transition: color 0.3s ease;
}

nav a:hover {
  color: var(--color-ocean-teal);
}

nav a.active {
  color: var(--color-ocean-teal);
  border-bottom: 1px solid var(--color-ocean-teal);
}

nav a.active::after {
  content: '•';
  margin-left: 0.5rem;
  font-size: 0.8rem;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border: 1px solid var(--color-ocean-teal);
  background: transparent;
  color: var(--color-ocean-teal);
  border-radius: 16px;
  cursor: pointer;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  text-decoration: none;
  font-weight: 500;
}

.btn:hover {
  transform: scale(1.02);
  background-color: rgba(91, 155, 168, 0.1);
}

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

.btn-primary:hover {
  background: #4a7a85;
  border-color: #4a7a85;
}

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

.btn-small {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

.container-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 4rem 0;
}

.section-light {
  background-color: var(--color-warm-white);
}

.section-dark {
  background: linear-gradient(135deg, var(--color-ink-charcoal) 0%, #1e3438 100%);
  color: white;
}

.section-dark h2, .section-dark h3 {
  color: white;
}

.section-dark p, .section-dark a {
  color: rgba(255, 255, 255, 0.9);
}

.section-dark a {
  color: var(--color-ocean-teal);
}

.hero {
  background: linear-gradient(135deg, var(--color-ink-charcoal) 0%, #1e3438 100%);
  color: white;
  padding: 5rem 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
}

.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.overline {
  font-size: 0.85rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-ocean-teal);
  margin-bottom: 1rem;
  font-weight: 600;
}

.hero h1 {
  color: white;
  font-size: 2.8rem;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.btn-group {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
}

.micro-note {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  font-style: italic;
}

.hero-feature {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(91, 155, 168, 0.3);
  border-radius: 18px;
  padding: 2rem;
  text-align: left;
}

.hero-feature img {
  width: 100%;
  height: auto;
  border-radius: 14px;
  margin-bottom: 1.5rem;
}

.feature-caption {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.5;
  margin-bottom: 1rem;
}

.feature-ref {
  font-size: 0.85rem;
  color: var(--color-ocean-teal);
  font-weight: 600;
}

.section-tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.tile {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 2rem;
  position: relative;
  transition: all 0.3s ease;
}

.tile:hover {
  border-color: var(--color-ocean-teal);
}

.tile h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.tile-counter {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-size: 0.9rem;
  color: var(--color-pale-mist);
  font-weight: 600;
}

.section-dark .tile {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(91, 155, 168, 0.2);
  color: white;
}

.section-dark .tile h3 {
  color: white;
}

.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.panel-card {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(91, 155, 168, 0.2);
  border-radius: 16px;
  padding: 2rem;
  color: white;
}

.panel-row {
  padding: 0.8rem 0;
  border-bottom: 1px solid rgba(91, 155, 168, 0.1);
  font-size: 0.95rem;
}

.panel-row:last-child {
  border-bottom: none;
}

.panel-label {
  font-weight: 600;
  color: var(--color-ocean-teal);
  margin-bottom: 0.3rem;
}

.two-column-guide {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.guide-image {
  width: 100%;
  height: auto;
  border-radius: 14px;
  border: 1px solid var(--color-border);
}

.guide-list {
  list-style: none;
}

.guide-list li {
  padding: 0.8rem 0;
  padding-left: 1.5rem;
  position: relative;
  font-size: 0.95rem;
}

.guide-list li::before {
  content: '−';
  position: absolute;
  left: 0;
  color: var(--color-ocean-teal);
  font-weight: bold;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.product-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  overflow: hidden;
  transition: all 0.3s ease;
  cursor: pointer;
}

.product-card:hover {
  border-color: var(--color-ocean-teal);
  transform: scale(1.02);
}

.product-image {
  width: 100%;
  height: 280px;
  object-fit: cover;
  border-bottom: 1px solid var(--color-border);
  transition: transform 0.3s ease;
}

.product-card:hover .product-image {
  transform: scale(1.03);
}

.product-meta {
  display: flex;
  gap: 0.5rem;
  padding: 0.8rem 1rem;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.8rem;
}

.product-meta span {
  background: var(--color-soft-sand);
  color: var(--color-deep-graphite);
  padding: 0.3rem 0.7rem;
  border-radius: 12px;
}

.product-badge {
  display: inline-block;
  background: var(--color-ocean-teal);
  color: white;
  padding: 0.3rem 0.7rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.product-info {
  padding: 1.5rem;
}

.product-name {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-deep-graphite);
}

.product-desc {
  font-size: 0.9rem;
  color: #666;
  margin-bottom: 1rem;
  line-height: 1.5;
}

.product-price {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-ocean-teal);
  margin-bottom: 1rem;
}

.pill-tabs {
  display: flex;
  gap: 1rem;
  margin: 2rem 0;
  flex-wrap: wrap;
}

.pill-tab {
  padding: 0.6rem 1.2rem;
  border: 1px solid var(--color-border);
  background: white;
  color: var(--color-text);
  border-radius: 20px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  font-weight: 500;
}

.pill-tab:hover, .pill-tab.active {
  background: var(--color-ocean-teal);
  color: white;
  border-color: var(--color-ocean-teal);
}

.section-hint {
  font-size: 0.9rem;
  color: #999;
  margin: 1rem 0;
}

.item-counter {
  font-size: 0.85rem;
  color: #999;
  margin-bottom: 1.5rem;
}

footer {
  background: var(--color-ink-charcoal);
  color: rgba(255, 255, 255, 0.8);
  padding: 3rem 2rem 1.5rem;
  margin-top: 4rem;
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(91, 155, 168, 0.1);
}

.footer-col h4 {
  color: white;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
}

.footer-col ul li a {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.3s ease;
}

.footer-col ul li a:hover {
  color: var(--color-ocean-teal);
}

.footer-bottom {
  max-width: 1400px;
  margin: 0 auto;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.6);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--color-deep-graphite);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-ocean-teal);
  box-shadow: 0 0 0 2px rgba(91, 155, 168, 0.1);
}

.checkbox-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.checkbox-group input[type="checkbox"] {
  width: auto;
  cursor: pointer;
}

.checkbox-group label {
  margin-bottom: 0;
  cursor: pointer;
  font-size: 0.9rem;
}

.thank-you-message {
  text-align: center;
  padding: 3rem 2rem;
  background: white;
  border-radius: 16px;
  border: 1px solid var(--color-border);
}

.thank-you-message h1 {
  color: var(--color-ocean-teal);
  margin-bottom: 1rem;
}

.browse-cues,
.label-map,
.shelf-checklist,
.format-snapshots,
.small-prints,
.quick-glossary,
.product-guide {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 2rem;
  margin: 2rem 0;
}

.section-dark .browse-cues,
.section-dark .label-map,
.section-dark .shelf-checklist {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(91, 155, 168, 0.2);
}

.cue-item, .map-item, .check-item, .print-item, .term-item, .guide-item {
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
}

.section-dark .cue-item,
.section-dark .map-item,
.section-dark .check-item {
  border-bottom-color: rgba(91, 155, 168, 0.1);
}

.cue-item:last-child, .map-item:last-child, .check-item:last-child,
.print-item:last-child, .term-item:last-child, .guide-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.cue-item strong, .map-item strong, .check-item strong,
.print-item strong, .term-item strong, .guide-item strong {
  color: var(--color-ocean-teal);
  font-weight: 600;
}

.section-dark .cue-item strong,
.section-dark .map-item strong,
.section-dark .check-item strong {
  color: var(--color-ocean-teal);
}

.format-snapshots .snapshot-card {
  background: var(--color-soft-sand);
  border-radius: 14px;
  padding: 1.5rem;
  margin-top: 1rem;
}

.format-snapshots .snapshot-card h4 {
  color: var(--color-deep-graphite);
  margin-bottom: 0.5rem;
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin: 2rem 0;
}

.faq-item {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.faq-item h4 {
  color: var(--color-ocean-teal);
  margin-bottom: 0.8rem;
  font-size: 0.95rem;
}

.faq-item p {
  font-size: 0.9rem;
  color: #666;
  margin-bottom: 0;
}

.breadcrumb {
  font-size: 0.85rem;
  color: #999;
  margin-bottom: 2rem;
}

.breadcrumb a {
  color: var(--color-ocean-teal);
}

@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 3rem 1rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .btn-group {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    text-align: center;
  }

  nav ul {
    gap: 1rem;
    font-size: 0.9rem;
  }

  .split-layout {
    grid-template-columns: 1fr;
  }

  .two-column-guide {
    grid-template-columns: 1fr;
  }

  .product-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }

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

  .footer-container {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 1.8rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  section {
    padding: 2.5rem 0;
  }
}