:root {
  --canvas: #000000;
  --surface-soft: #0d0d0d;
  --surface-card: #1a1a1a;
  --surface-elevated: #262626;
  --carbon-gray: #2b2b2b;
  --hairline: #3c3c3c;
  --on-dark: #ffffff;
  --body-color: #bbbbbb;
  --body-strong: #e6e6e6;
  --muted: #7e7e7e;
  --m-blue-light: #0066b1;
  --m-blue-dark: #1c69d4;
  --m-red: #e22718;
  --spacing-section: 96px;
  --spacing-xxl: 64px;
  --spacing-xl: 40px;
  --spacing-lg: 24px;
  --spacing-md: 16px;
  --spacing-sm: 12px;
}

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

html { scroll-behavior: smooth; }

body {
  background-color: var(--canvas);
  color: var(--body-color);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-weight: 300;
  font-size: 16px;
  line-height: 1.5;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--on-dark);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0;
  line-height: 1.05;
}

h1 { font-size: clamp(48px, 6vw, 80px); line-height: 1.0; }
h2 { font-size: clamp(32px, 4vw, 56px); line-height: 1.05; }
h3 { font-size: clamp(24px, 3vw, 40px); line-height: 1.1; }
h4 { font-size: 32px; line-height: 1.15; }
h5 { font-size: 24px; font-weight: 700; line-height: 1.3; }
h6 { font-size: 20px; font-weight: 400; line-height: 1.4; }

p { color: var(--body-color); font-weight: 300; line-height: 1.5; margin-bottom: 1rem; }

a { color: var(--on-dark); text-decoration: none; }
a:hover { color: var(--body-strong); }

.label-uppercase {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--on-dark);
}

.m-stripe-divider {
  height: 4px;
  background: linear-gradient(to right, var(--m-blue-light) 33.3%, var(--m-blue-dark) 33.3% 66.6%, var(--m-red) 66.6%);
  border: none;
  margin: 0;
  width: 100%;
}

.top-nav {
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  height: 64px;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.top-nav .navbar-brand {
  font-size: 18px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--on-dark) !important;
}

.top-nav .nav-link {
  color: var(--body-color) !important;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.5px;
  padding: 0 var(--spacing-md) !important;
  transition: color 0.2s;
}

.top-nav .nav-link:hover { color: var(--on-dark) !important; }

.navbar-toggler { border: 1px solid var(--hairline); }
.navbar-toggler-icon { filter: invert(1); }

.sidebar {
  background: var(--surface-soft);
  border-right: 1px solid var(--hairline);
  min-height: calc(100vh - 64px);
  padding: var(--spacing-xl) 0;
}

.sidebar-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
  padding: 0 var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.sidebar .nav-link {
  color: var(--body-color) !important;
  font-size: 14px;
  font-weight: 300;
  padding: 10px var(--spacing-lg) !important;
  border-left: 2px solid transparent;
  transition: all 0.2s;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
  color: var(--on-dark) !important;
  border-left-color: var(--on-dark);
  background: var(--surface-card);
}

.hero-band {
  background: var(--canvas);
  padding: var(--spacing-xxl) 0;
  position: relative;
  overflow: hidden;
}

.hero-band img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  display: block;
}

.hero-band .hero-content {
  padding: var(--spacing-xxl) 0 var(--spacing-xl);
}

.section-band {
  padding: var(--spacing-section) 0;
}

.section-band--soft { background: var(--surface-soft); }
.section-band--card { background: var(--surface-card); }

.feature-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: 0;
  overflow: hidden;
  height: 100%;
}

.feature-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.feature-card-body { padding: var(--spacing-lg); }

.feature-card-body .label-uppercase {
  display: block;
  margin-bottom: var(--spacing-sm);
  color: var(--muted);
}

.feature-card-body h5 {
  margin-bottom: var(--spacing-sm);
  font-size: 20px;
}

.btn-primary-dark {
  background: transparent;
  color: var(--on-dark);
  border: 1px solid var(--on-dark);
  border-radius: 0;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 12px 32px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  transition: background 0.2s, color 0.2s;
}

.btn-primary-dark:hover {
  background: var(--on-dark);
  color: var(--canvas);
}

.table-dark-custom {
  border: 1px solid var(--hairline);
  width: 100%;
}

.table-dark-custom th {
  background: var(--surface-soft);
  color: var(--on-dark);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--hairline);
  border-right: 1px solid var(--hairline);
}

.table-dark-custom td {
  color: var(--body-color);
  font-weight: 300;
  font-size: 14px;
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--hairline);
  border-right: 1px solid var(--hairline);
  vertical-align: top;
}

.table-dark-custom tr:last-child td { border-bottom: none; }

.spec-cell {
  background: var(--surface-soft);
  border: 1px solid var(--hairline);
  padding: var(--spacing-lg);
  text-align: center;
}

.spec-cell .spec-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--on-dark);
  text-transform: uppercase;
  display: block;
  line-height: 1.15;
}

.spec-cell .spec-label {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
  display: block;
  margin-top: var(--spacing-xs, 8px);
}

details.faq-item {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  margin-bottom: 8px;
}

details.faq-item summary {
  padding: var(--spacing-lg);
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  color: var(--on-dark);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

details.faq-item summary::-webkit-details-marker { display: none; }

details.faq-item summary::after {
  content: '+';
  font-size: 20px;
  color: var(--muted);
}

details.faq-item[open] summary::after { content: '−'; }

details.faq-item .faq-body {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  color: var(--body-color);
  font-weight: 300;
  font-size: 15px;
  line-height: 1.6;
}

.breadcrumb-dark {
  background: transparent;
  padding: var(--spacing-md) 0;
  margin-bottom: var(--spacing-lg);
}

.breadcrumb-dark .breadcrumb-item a {
  color: var(--muted);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.5px;
}

.breadcrumb-dark .breadcrumb-item.active {
  color: var(--body-color);
  font-size: 12px;
}

.breadcrumb-dark .breadcrumb-item + .breadcrumb-item::before {
  color: var(--muted);
  content: '›';
}

.disclaimer-block {
  background: var(--surface-soft);
  border-left: 4px solid var(--hairline);
  padding: var(--spacing-md) var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  font-size: 14px;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.5;
}

.disclaimer-block strong {
  color: var(--body-color);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  display: block;
  margin-bottom: 4px;
}

.contact-form input,
.contact-form textarea {
  background: var(--surface-card);
  color: var(--on-dark);
  border: 1px solid var(--hairline);
  border-radius: 0;
  padding: 12px var(--spacing-md);
  font-size: 16px;
  font-weight: 300;
  width: 100%;
  font-family: inherit;
  transition: border-color 0.2s;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--on-dark);
  background: var(--surface-card);
  color: var(--on-dark);
  box-shadow: none;
}

.contact-form label {
  color: var(--on-dark);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 6px;
  display: block;
}

.contact-form .form-message {
  color: var(--on-dark);
  font-size: 16px;
  font-weight: 700;
  padding: var(--spacing-lg);
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  display: none;
}

#cookie-banner {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  width: 360px;
  background: var(--canvas);
  border: 1px solid var(--hairline);
  padding: var(--spacing-lg);
  z-index: 9999;
}

#cookie-banner p {
  font-size: 14px;
  font-weight: 300;
  color: var(--body-color);
  margin-bottom: var(--spacing-md);
}

#cookie-banner .cookie-btns {
  display: flex;
  gap: var(--spacing-sm);
  flex-direction: column;
}

.cookie-accept {
  background: transparent;
  color: var(--on-dark);
  border: 1px solid var(--on-dark);
  border-radius: 0;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 10px var(--spacing-lg);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  font-family: inherit;
}

.cookie-accept:hover { background: var(--on-dark); color: var(--canvas); }

.cookie-reject {
  background: transparent;
  color: var(--muted);
  border: none;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  padding: 8px 0;
  font-family: inherit;
  text-align: left;
}

.cookie-reject:hover { color: var(--body-color); }

.site-footer {
  background: var(--canvas);
  border-top: 1px solid var(--hairline);
  padding: var(--spacing-xxl) 0 var(--spacing-xl);
}

.footer-col-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--on-dark);
  margin-bottom: var(--spacing-md);
}

.footer-links { list-style: none; padding: 0; margin: 0; }

.footer-links li { margin-bottom: 8px; }

.footer-links a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 300;
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--on-dark); }

.footer-bottom {
  border-top: 1px solid var(--hairline);
  padding-top: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.footer-copyright {
  font-size: 12px;
  color: var(--muted);
  font-weight: 300;
}

.footer-disclaimer {
  font-size: 12px;
  color: var(--muted);
  font-weight: 300;
  line-height: 1.5;
  margin-top: var(--spacing-sm);
}

.toc-box {
  background: var(--surface-soft);
  border: 1px solid var(--hairline);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.toc-box h6 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--spacing-md);
}

.toc-box ol {
  padding-left: var(--spacing-lg);
  margin: 0;
}

.toc-box ol li { margin-bottom: 6px; }

.toc-box ol li a {
  color: var(--body-color);
  font-size: 14px;
  font-weight: 300;
  transition: color 0.2s;
}

.toc-box ol li a:hover { color: var(--on-dark); }

.related-links {
  background: var(--surface-soft);
  border: 1px solid var(--hairline);
  padding: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.related-links h6 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--spacing-md);
}

.related-links ul { list-style: none; padding: 0; margin: 0; }

.related-links ul li { border-bottom: 1px solid var(--hairline); padding: 10px 0; }
.related-links ul li:last-child { border-bottom: none; }

.related-links ul li a {
  color: var(--body-color);
  font-size: 14px;
  font-weight: 300;
}

.related-links ul li a:hover { color: var(--on-dark); }

.photo-band-img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  display: block;
}

@media (max-width: 991.98px) {
  .sidebar { display: none; }
}

@media (max-width: 767.98px) {
  h1 { font-size: 40px; }
  h2 { font-size: 28px; }
  h3 { font-size: 22px; }
  .section-band { padding: 48px 0; }
  .hero-band img { height: 280px; }
  .photo-band-img { height: 240px; }
  #cookie-banner { width: calc(100% - 32px); left: 16px; right: 16px; bottom: 16px; }
}