:root {
  --bg-canvas: #1c1f24;
  --bg-surface: #292e34;
  --bg-surface-elevated: #323840;
  --text-primary: #e5e7eb;
  --text-muted: #9ca3af;
  --accent-primary: #14b8a6;
  --accent-hover: #0d9488;
  --accent-dim: #134e4a;
  --border-subtle: #374151;
  --border-accent: #14b8a6;
  --radius: 4px;
  --shadow-soft: 0 4px 16px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 10px 24px rgba(0, 0, 0, 0.5);
  --font-serif: Georgia, "Times New Roman", serif;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --max-width: 1200px;
  --reading-width: 70ch;
}

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

body {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  overflow-wrap: anywhere;
  hyphens: auto;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: normal;
  line-height: 1.25;
  color: #ffffff;
  margin-bottom: 0.75rem;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.25rem; }

p {
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

p.lead {
  font-size: 1.15rem;
  color: #d1d5db;
}

a {
  color: var(--accent-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

a:hover, a:focus-visible {
  color: #5eead4;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
  object-fit: cover;
}

.site-header {
  position: relative;
  background-color: var(--bg-canvas);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1.25rem 1.5rem;
  z-index: 50;
  transition: background-color 0.25s ease;
}

.site-header.scrolled-surface {
  background-color: var(--bg-surface);
}

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

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

.brand-link {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: bold;
  color: #ffffff;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.brand-link span {
  color: var(--accent-primary);
}

.nav-desktop {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav-desktop a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.nav-desktop a:hover,
.nav-desktop a.active {
  color: #ffffff;
  border-bottom-color: var(--accent-primary);
}

.mobile-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 1.5rem;
  padding: 0.2rem 0.6rem;
  cursor: pointer;
  line-height: 1;
}

.mobile-menu {
  display: none;
  flex-direction: column;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1rem 1.5rem;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu a {
  padding: 0.75rem 0;
  text-decoration: none;
  color: var(--text-primary);
  border-bottom: 1px solid #333a42;
  font-size: 1rem;
}

.mobile-menu a:last-child {
  border-bottom: none;
}

.main-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

.hero-block {
  padding: 2.5rem 0 3.5rem;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 3.5rem;
}

.hero-split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.hero-trio-illustrations {
  position: relative;
  height: 340px;
}

.trio-item {
  position: absolute;
  width: 72%;
  height: 200px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: transform 0.3s ease;
}

.trio-1 { top: 0; left: 0; z-index: 1; }
.trio-2 { top: 70px; left: 18%; z-index: 2; border-color: var(--accent-dim); }
.trio-3 { top: 140px; left: 34%; z-index: 3; }

.trio-item:hover {
  transform: translateY(-4px);
  z-index: 10;
}

.trio-item img {
  width: 100%;
  height: 100%;
}

.btn-outline {
  display: inline-block;
  background: transparent;
  color: var(--accent-primary);
  border: 1px solid var(--accent-primary);
  border-radius: var(--radius);
  padding: 0.75rem 1.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-outline:hover, .btn-outline:focus-visible {
  background-color: var(--accent-primary);
  color: #121518;
}

.content-split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
  padding: 3.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.content-split-section.reverse {
  direction: rtl;
}

.content-split-section.reverse > * {
  direction: ltr;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 1.75rem;
  margin: 2rem 0;
}

.borderless-card {
  background-color: var(--bg-surface);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-soft);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  position: relative;
}

.borderless-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.card-tag {
  display: inline-block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-primary);
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.editorial-note {
  background: #242930;
  border-left: 3px solid var(--accent-primary);
  padding: 1rem 1.25rem;
  margin: 1.25rem 0;
  font-size: 0.95rem;
  color: #d1d5db;
}

.editorial-tag {
  font-weight: bold;
  color: var(--accent-primary);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
  display: block;
}

.comparison-table-wrapper {
  overflow-x: auto;
  margin: 2rem 0;
  background-color: var(--bg-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

table.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

table.comparison-table th,
table.comparison-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
}

table.comparison-table th {
  background-color: #21252b;
  font-family: var(--font-serif);
  color: #ffffff;
  font-weight: 600;
  letter-spacing: 0.02em;
}

table.comparison-table tr:hover td {
  background-color: var(--bg-surface-elevated);
}

.text-reading {
  max-width: var(--reading-width);
  margin: 0 auto;
}

details.prompt-accordion {
  background-color: var(--bg-surface);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-soft);
}

details.prompt-accordion summary {
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: #ffffff;
  outline: none;
  user-select: none;
  font-weight: 500;
}

details.prompt-accordion summary::marker {
  color: var(--accent-primary);
}

details.prompt-accordion p {
  margin-top: 1rem;
  margin-bottom: 0;
  color: #cbd5e1;
}

.contact-box {
  background-color: var(--bg-surface);
  padding: 2.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  max-width: 720px;
  margin: 2rem auto;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  color: #d1d5db;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.85rem;
  background-color: #1c1f24;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 0.95rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
}

.button-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.feedback-alert {
  display: none;
  padding: 0.75rem 1rem;
  margin-top: 1.25rem;
  border-radius: var(--radius);
  background-color: var(--accent-dim);
  color: #ffffff;
  font-size: 0.9rem;
}

.site-footer {
  background-color: #14171a;
  border-top: 1px solid var(--border-subtle);
  padding: 3.5rem 1.5rem 2rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-nav {
  list-style: none;
}

.footer-nav li {
  margin-bottom: 0.5rem;
}

.footer-nav a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-nav a:hover {
  color: var(--accent-primary);
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-top: 1.5rem;
  border-top: 1px solid #23282f;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
}

.scroll-reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.scroll-reveal.reveal-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 768px) {
  h1 { font-size: 1.85rem; }
  h2 { font-size: 1.5rem; }
  
  .nav-desktop {
    display: none;
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .hero-split,
  .content-split-section,
  .content-split-section.reverse {
    grid-template-columns: 1fr;
    gap: 2rem;
    direction: ltr;
  }
  
  .hero-trio-illustrations {
    height: 260px;
    margin-top: 1rem;
  }
  
  .trio-item {
    width: 80%;
    height: 160px;
  }
  
  .trio-2 { top: 40px; left: 10%; }
  .trio-3 { top: 80px; left: 20%; }
  
  .footer-inner {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}