@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

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

:root {
  --canvas: #181818;
  --canvas-elevated: #303030;
  --canvas-light: #ffffff;
  --surface-soft-light: #f7f7f7;
  --surface-strong-light: #ebebeb;
  --primary: #da291c;
  --primary-active: #b01e0a;
  --ink: #ffffff;
  --body-color: #969696;
  --body-on-light: #181818;
  --muted: #666666;
  --hairline: #303030;
  --hairline-on-light: #d2d2d2;
  --on-primary: #ffffff;
  --semantic-info: #4c98b9;
  --semantic-success: #03904a;
  --rounded-sm: 4px;
  --rounded-none: 0px;
  --rounded-full: 9999px;
  --spacing-xxxs: 4px;
  --spacing-xxs: 8px;
  --spacing-xs: 16px;
  --spacing-sm: 24px;
  --spacing-md: 32px;
  --spacing-lg: 48px;
  --spacing-xl: 64px;
  --spacing-xxl: 96px;
  --spacing-super: 128px;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, system-ui, sans-serif;
  font-weight: 400;
  font-size: 14px;
  line-height: 1.5;
  color: var(--body-color);
  background: var(--canvas);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
ul, ol { list-style: none; }

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-xs);
}

/* NAV */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 64px;
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  display: flex;
  align-items: center;
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav-logo {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.65px;
  text-transform: uppercase;
}

.nav-logo span { color: var(--primary); }

.nav-links {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-links a {
  font-size: 13px;
  font-weight: 600;
  color: var(--body-color);
  letter-spacing: 0.65px;
  text-transform: uppercase;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--ink); }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--spacing-xxs);
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
}

.nav-mobile {
  display: none;
  flex-direction: column;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  padding: var(--spacing-sm);
  z-index: 99;
  gap: var(--spacing-sm);
}

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

.nav-mobile a {
  font-size: 13px;
  font-weight: 600;
  color: var(--body-color);
  letter-spacing: 0.65px;
  text-transform: uppercase;
}

/* HERO */
.hero-band {
  position: relative;
  margin-top: 64px;
  height: 90vh;
  min-height: 560px;
  background: var(--canvas);
  overflow: hidden;
  display: flex;
  align-items: flex-end;
}

.hero-band img.hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
  filter: brightness(0.55);
}

.hero-band .hero-overlay {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: var(--spacing-xxl) 0;
}

.hero-band .container { position: relative; }

.hero-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.1px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--spacing-sm);
}

.hero-band h1 {
  font-size: clamp(32px, 5vw, 80px);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -1.6px;
  color: var(--ink);
  max-width: 800px;
  margin-bottom: var(--spacing-sm);
}

.hero-band p.hero-desc {
  font-size: 16px;
  font-weight: 400;
  color: var(--body-color);
  max-width: 560px;
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
}

/* BUTTONS */
.btn-primary {
  display: inline-block;
  background: var(--primary);
  color: var(--on-primary);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  padding: 14px 32px;
  height: 48px;
  line-height: 20px;
  border-radius: var(--rounded-none);
  border: none;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-primary:hover { background: var(--primary-active); }

.btn-outline {
  display: inline-block;
  background: transparent;
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  padding: 14px 32px;
  height: 48px;
  line-height: 20px;
  border-radius: var(--rounded-none);
  border: 1px solid var(--ink);
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
  margin-left: var(--spacing-xs);
}

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

/* SECTION LABEL */
.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.1px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--spacing-sm);
  display: block;
}

/* DARK SECTIONS */
.section-dark {
  background: var(--canvas);
  padding: var(--spacing-xxl) 0;
}

.section-elevated {
  background: var(--canvas-elevated);
  padding: var(--spacing-xxl) 0;
}

/* LIGHT SECTIONS */
.section-light {
  background: var(--canvas-light);
  padding: var(--spacing-xxl) 0;
}

.section-soft {
  background: var(--surface-soft-light);
  padding: var(--spacing-xxl) 0;
}

/* SECTION HEADINGS */
.section-heading {
  font-size: 36px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.36px;
  color: var(--ink);
  margin-bottom: var(--spacing-md);
}

.section-heading.on-light {
  color: var(--body-on-light);
}

.section-subheading {
  font-size: 26px;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.195px;
  color: var(--ink);
  margin-bottom: var(--spacing-sm);
}

.section-subheading.on-light { color: var(--body-on-light); }

.section-body {
  font-size: 14px;
  color: var(--body-color);
  line-height: 1.5;
  max-width: 680px;
}

.section-body.on-light { color: var(--body-on-light); }

/* CARD GRIDS */
.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-sm);
}

.card-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
}

/* FEATURE CARDS (DARK) */
.feature-card {
  background: var(--canvas-elevated);
  border-radius: var(--rounded-none);
  overflow: hidden;
  border: 1px solid var(--hairline);
  transition: box-shadow 0.2s;
}

.feature-card:hover { box-shadow: 0 4px 8px rgba(0,0,0,0.3); }

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

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

.feature-card-badge {
  display: inline-block;
  background: var(--canvas-elevated);
  color: var(--ink);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.1px;
  text-transform: uppercase;
  border-radius: var(--rounded-full);
  padding: 4px 12px;
  border: 1px solid var(--hairline);
  margin-bottom: var(--spacing-xxs);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.2;
  margin-bottom: var(--spacing-xxs);
}

.feature-card p {
  font-size: 14px;
  color: var(--body-color);
  line-height: 1.5;
  margin-bottom: var(--spacing-sm);
}

.feature-card .card-link {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--primary);
}

/* ARTICLE CARDS (LIGHT) */
.article-card {
  background: var(--canvas-light);
  border-radius: var(--rounded-none);
  overflow: hidden;
  border: 1px solid var(--hairline-on-light);
  transition: box-shadow 0.2s;
}

.article-card:hover { box-shadow: 0 4px 8px rgba(0,0,0,0.1); }

.article-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.article-card-body {
  padding: var(--spacing-sm);
}

.article-card-badge {
  display: inline-block;
  background: var(--surface-strong-light);
  color: var(--body-on-light);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.1px;
  text-transform: uppercase;
  border-radius: var(--rounded-full);
  padding: 4px 12px;
  margin-bottom: var(--spacing-xxs);
}

.article-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--body-on-light);
  line-height: 1.2;
  margin-bottom: var(--spacing-xxs);
}

.article-card p {
  font-size: 14px;
  color: var(--body-on-light);
  opacity: 0.7;
  line-height: 1.5;
  margin-bottom: var(--spacing-sm);
}

.article-card .card-link {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--primary);
}

/* LIVERY BAND (RED ACCENT) */
.livery-band {
  background: var(--primary);
  padding: var(--spacing-xxl) 0;
}

.livery-band .section-heading {
  color: var(--on-primary);
}

.livery-band .section-body {
  color: rgba(255,255,255,0.8);
}

/* SPEC GRID */
.spec-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.spec-cell {
  text-align: center;
}

.spec-cell .spec-value {
  font-size: clamp(40px, 5vw, 80px);
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -1.6px;
  color: var(--ink);
  display: block;
}

.spec-cell .spec-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.1px;
  text-transform: uppercase;
  color: var(--muted);
  display: block;
  margin-top: var(--spacing-xxs);
}

/* DIVIDER */
.hairline {
  border: none;
  border-top: 1px solid var(--hairline);
  margin: var(--spacing-lg) 0;
}

.hairline-light {
  border: none;
  border-top: 1px solid var(--hairline-on-light);
  margin: var(--spacing-lg) 0;
}

/* CONTACT FORM */
.form-band {
  background: var(--canvas-elevated);
  padding: var(--spacing-xxl) 0;
}

.form-wrap {
  max-width: 560px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-xs);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xxs);
  margin-bottom: var(--spacing-xs);
}

.form-group label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.1px;
  text-transform: uppercase;
  color: var(--body-color);
}

.form-group input,
.form-group textarea {
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-sm);
  padding: 14px 16px;
  height: 48px;
  font-size: 14px;
  font-family: 'Inter', sans-serif;
  color: var(--ink);
  width: 100%;
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
}

.form-group textarea {
  height: auto;
  min-height: 120px;
  resize: vertical;
}

/* COOKIE BANNER */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--canvas-elevated);
  border-top: 1px solid var(--hairline);
  padding: var(--spacing-sm) var(--spacing-xs);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.cookie-text {
  font-size: 13px;
  color: var(--body-color);
  max-width: 700px;
  line-height: 1.5;
}

.cookie-text a {
  color: var(--primary);
  text-decoration: underline;
}

.cookie-actions {
  display: flex;
  gap: var(--spacing-xxs);
  flex-shrink: 0;
}

.cookie-accept {
  background: var(--primary);
  color: var(--on-primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.1px;
  text-transform: uppercase;
  padding: 10px 20px;
  border-radius: var(--rounded-none);
  border: none;
  cursor: pointer;
}

.cookie-reject {
  background: transparent;
  color: var(--body-color);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.1px;
  text-transform: uppercase;
  padding: 10px 20px;
  border-radius: var(--rounded-none);
  border: 1px solid var(--hairline);
  cursor: pointer;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.footer-brand .nav-logo {
  font-size: 14px;
  margin-bottom: var(--spacing-sm);
  display: block;
}

.footer-brand p {
  font-size: 13px;
  color: var(--body-color);
  line-height: 1.6;
  max-width: 240px;
}

.footer-col h4 {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.1px;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: var(--spacing-sm);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xxs);
}

.footer-col ul li a {
  font-size: 13px;
  color: var(--body-color);
  line-height: 1.5;
  transition: color 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid var(--hairline);
  padding-top: var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.footer-bottom p {
  font-size: 13px;
  color: var(--muted);
}

.footer-bottom a {
  color: var(--muted);
  font-size: 13px;
  transition: color 0.2s;
}

.footer-bottom a:hover { color: var(--ink); }

.footer-legal {
  display: flex;
  gap: var(--spacing-sm);
}

/* ARTICLE PAGE */
.article-hero {
  margin-top: 64px;
  position: relative;
  height: 60vh;
  min-height: 400px;
  overflow: hidden;
  background: var(--canvas);
}

.article-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.55);
}

.article-hero-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-xxl) 0;
  background: linear-gradient(180deg, transparent 0%, rgba(24,24,24,0.9) 100%);
}

.article-hero h1 {
  font-size: clamp(28px, 4vw, 56px);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -1.12px;
  color: var(--ink);
  max-width: 760px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
  flex-wrap: wrap;
}

.article-meta span {
  font-size: 13px;
  color: var(--body-color);
}

.article-meta .sep { color: var(--hairline); }

/* ARTICLE BODY */
.article-body {
  background: var(--canvas);
  padding: var(--spacing-xxl) 0;
}

.article-content {
  max-width: 760px;
}

.article-content h2 {
  font-size: 36px;
  font-weight: 500;
  letter-spacing: -0.36px;
  color: var(--ink);
  margin: var(--spacing-xl) 0 var(--spacing-sm);
}

.article-content h3 {
  font-size: 26px;
  font-weight: 500;
  letter-spacing: 0.195px;
  color: var(--ink);
  margin: var(--spacing-lg) 0 var(--spacing-xs);
}

.article-content p {
  font-size: 16px;
  color: var(--body-color);
  line-height: 1.7;
  margin-bottom: var(--spacing-sm);
}

.article-content ul, .article-content ol {
  margin-bottom: var(--spacing-sm);
  padding-left: var(--spacing-sm);
}

.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }

.article-content li {
  font-size: 16px;
  color: var(--body-color);
  line-height: 1.7;
  margin-bottom: var(--spacing-xxs);
}

.article-content a {
  color: var(--primary);
  text-decoration: underline;
}

.article-content blockquote {
  border-left: 3px solid var(--primary);
  padding: var(--spacing-sm) var(--spacing-sm);
  margin: var(--spacing-lg) 0;
  background: var(--canvas-elevated);
}

.article-content blockquote p {
  color: var(--ink);
  font-size: 18px;
  font-style: italic;
  margin: 0;
}

.article-sidebar {
  position: sticky;
  top: 80px;
  align-self: start;
}

.sidebar-card {
  background: var(--canvas-elevated);
  border: 1px solid var(--hairline);
  padding: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.sidebar-card h4 {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.1px;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: var(--spacing-sm);
}

.sidebar-card ul li a {
  font-size: 13px;
  color: var(--body-color);
  display: block;
  padding: var(--spacing-xxs) 0;
  border-bottom: 1px solid var(--hairline);
  transition: color 0.2s;
}

.sidebar-card ul li a:hover { color: var(--ink); }
.sidebar-card ul li:last-child a { border-bottom: none; }

.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--spacing-xl);
  align-items: start;
}

/* PAGE HEADER */
.page-header {
  margin-top: 64px;
  background: var(--canvas-elevated);
  padding: var(--spacing-xxl) 0;
  border-bottom: 1px solid var(--hairline);
}

.page-header h1 {
  font-size: clamp(32px, 4vw, 56px);
  font-weight: 500;
  letter-spacing: -1.12px;
  color: var(--ink);
  margin-bottom: var(--spacing-xs);
}

.page-header p {
  font-size: 16px;
  color: var(--body-color);
  max-width: 600px;
  line-height: 1.6;
}

/* PAGE CONTENT */
.page-content {
  background: var(--canvas);
  padding: var(--spacing-xxl) 0;
  max-width: 800px;
}

.page-content h2 {
  font-size: 26px;
  font-weight: 500;
  color: var(--ink);
  margin: var(--spacing-xl) 0 var(--spacing-xs);
}

.page-content h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  margin: var(--spacing-lg) 0 var(--spacing-xxs);
}

.page-content p {
  font-size: 15px;
  color: var(--body-color);
  line-height: 1.7;
  margin-bottom: var(--spacing-sm);
}

.page-content ul {
  list-style: disc;
  padding-left: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.page-content li {
  font-size: 15px;
  color: var(--body-color);
  line-height: 1.7;
  margin-bottom: var(--spacing-xxs);
}

.page-content a { color: var(--primary); text-decoration: underline; }

.disclaimer-box {
  background: var(--canvas-elevated);
  border-left: 3px solid var(--primary);
  padding: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.disclaimer-box p {
  font-size: 13px;
  color: var(--body-color);
  margin: 0;
  line-height: 1.6;
}

/* CONTACT INFO */
.contact-info {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
}

.contact-box {
  background: var(--canvas-elevated);
  padding: var(--spacing-sm);
  border: 1px solid var(--hairline);
}

.contact-box h4 {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.1px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--spacing-xxs);
}

.contact-box p, .contact-box a {
  font-size: 14px;
  color: var(--body-color);
  line-height: 1.6;
}

.contact-box a:hover { color: var(--ink); }

/* BREADCRUMB */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-xxs);
  margin-bottom: var(--spacing-sm);
}

.breadcrumb a {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.65px;
}

.breadcrumb a:hover { color: var(--ink); }

.breadcrumb span {
  font-size: 12px;
  color: var(--hairline);
}

.breadcrumb .current {
  font-size: 12px;
  color: var(--body-color);
  text-transform: uppercase;
  letter-spacing: 0.65px;
}

/* INFO BOX */
.info-box {
  background: var(--canvas-elevated);
  border: 1px solid var(--hairline);
  padding: var(--spacing-sm);
  margin: var(--spacing-lg) 0;
}

.info-box h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: var(--spacing-xxs);
}

.info-box p {
  font-size: 13px;
  color: var(--body-color);
  margin: 0;
}

/* RELATED ARTICLES */
.related-articles {
  background: var(--canvas-elevated);
  padding: var(--spacing-xxl) 0;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
  .card-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .spec-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { display: none; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .hero-band { height: 85vh; }
  .card-grid-3, .card-grid-2 { grid-template-columns: 1fr; }
  .spec-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-info { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .spec-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-legal { flex-direction: column; gap: var(--spacing-xs); }
  .cookie-banner { flex-direction: column; align-items: flex-start; }
}