/* === RESET & BASE === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #080B0F;
  --bg-2: #0E1319;
  --bg-3: #131920;
  --fg: #E8E6DF;
  --fg-2: #9A978E;
  --accent: #D97706;
  --accent-dim: rgba(217, 119, 6, 0.15);
  --danger: #EF4444;
  --success: #22C55E;
  --border: rgba(232, 230, 223, 0.08);
  --border-2: rgba(232, 230, 223, 0.15);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* === NAV === */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 32px;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  background: rgba(8, 11, 15, 0.85);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand { display: flex; align-items: center; gap: 10px; }
.nav-logo {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 28px;
  letter-spacing: 0.08em;
  color: var(--accent);
}
.nav-tag {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--fg-2);
  border-left: 1px solid var(--border-2);
  padding-left: 10px;
}
.nav-links { display: flex; gap: 32px; }
.nav-links a {
  color: var(--fg-2);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--fg); }

/* === HERO === */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding: 120px 64px 80px;
  gap: 64px;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}
.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.35;
  pointer-events: none;
}
.hero-eyebrow { margin-bottom: 24px; }
.hero-patent {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 6px 14px;
  border-radius: 2px;
  border: 1px solid rgba(217, 119, 6, 0.3);
}
.hero-headline {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(52px, 6vw, 80px);
  line-height: 1.0;
  letter-spacing: 0.02em;
  color: var(--fg);
  margin-bottom: 24px;
}
.hero-accent { color: var(--accent); }
.hero-sub {
  font-size: 18px;
  color: var(--fg-2);
  max-width: 420px;
  margin-bottom: 48px;
  line-height: 1.7;
}
.hero-specs {
  display: flex;
  align-items: center;
  gap: 0;
}
.hero-spec {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 0 32px 0 0;
}
.hero-spec:first-child { padding-left: 0; }
.spec-num {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 48px;
  color: var(--accent);
  line-height: 1;
}
.spec-label {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-2);
  margin-top: 4px;
}
.hero-spec-div {
  width: 1px;
  height: 48px;
  background: var(--border-2);
  margin-right: 32px;
}

/* Hero visual */
.hero-visual {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.hero-render {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border-2);
}
.hero-render-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  max-height: 320px;
}
.hero-render-caption {
  position: absolute;
  bottom: 12px;
  left: 12px;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-2);
  background: rgba(8, 11, 15, 0.75);
  padding: 5px 10px;
  border-radius: 2px;
  backdrop-filter: blur(8px);
}
.hero-diagrams {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.hero-diagram { display: flex; flex-direction: column; align-items: center; }
.truck-art-container { text-align: center; }
.truck-art-label {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-2);
  margin-top: 10px;
}
/* CSS truck illustration */
.truck-bed {
  background: #111620;
  border: 1px solid var(--border-2);
  border-radius: 4px;
  padding: 24px;
  display: flex;
  gap: 0;
  min-height: 120px;
  position: relative;
}
.truck-cab {
  width: 60px;
  min-height: 80px;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: 2px;
  flex-shrink: 0;
}
.truck-bed-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
  min-height: 80px;
  margin-left: -1px;
}
.bed-rail {
  height: 16px;
  background: #1C2230;
  border: 1px solid #2A3240;
  border-radius: 2px;
  display: flex;
  align-items: center;
  position: relative;
  z-index: 10;
}
.bed-rail-top-left { margin-bottom: -1px; }
.bed-rail-top-right { margin-top: -1px; }
.rail-tick {
  width: 2px;
  height: 8px;
  background: #2A3240;
  margin: 0 12px;
}
.rail-ladder {
  position: absolute;
  left: 40px;
  top: 0;
  bottom: 0;
  width: 40px;
  display: flex;
  align-items: stretch;
  z-index: 20;
}
.ladder-rail {
  width: 3px;
  background: #3A4455;
  height: 100%;
  border-radius: 1px;
}
.ladder-rung {
  width: 100%;
  height: 2px;
  background: #2A3240;
  position: absolute;
  left: 0;
}
.ladder-rung:nth-child(2) { top: 25%; }
.ladder-rung:nth-child(3) { top: 50%; }
.ladder-rung:nth-child(4) { top: 75%; }

.cover-panel {
  flex: 1;
  background: #1A1F2A;
  border: 1px solid var(--border-2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: -1px;
}
.cover-closed {
  background: linear-gradient(135deg, #1A2230 0%, #141920 100%);
  border-top: 2px solid var(--accent);
}
.panel-text {
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--fg-2);
}
.cover-folded {
  flex: 1;
  background: transparent;
  border: 1px dashed var(--border-2);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: -1px;
}
.cover-folded-label {
  font-size: 9px;
  letter-spacing: 0.15em;
  color: var(--fg-2);
  text-transform: uppercase;
}
.cover-arrow { color: var(--accent); }
.truck-bed-open .cover-panel {
  border: 1px dashed var(--border-2);
  background: transparent;
}
.truck-bed-open .cover-closed { border-color: var(--border-2); }

/* === SECTIONS === */
section { padding: 96px 0; }
.section-label {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.section-headline {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(36px, 4vw, 56px);
  line-height: 1.05;
  letter-spacing: 0.02em;
  color: var(--fg);
  margin-bottom: 32px;
}

/* === PROBLEM === */
.problem { background: var(--bg-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.problem-inner { max-width: 1200px; margin: 0 auto; padding: 0 64px; }
.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 64px;
}
.problem-card {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 32px;
  border-radius: 2px;
}
.problem-icon { color: var(--accent); margin-bottom: 16px; }
.problem-card h3 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 22px;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}
.problem-card p { font-size: 14px; color: var(--fg-2); line-height: 1.7; }
.problem-quote {
  border-left: 3px solid var(--accent);
  padding-left: 32px;
}
.problem-quote blockquote {
  font-size: 18px;
  color: var(--fg-2);
  font-style: italic;
  line-height: 1.7;
  margin-bottom: 12px;
}
.problem-quote cite { font-size: 13px; color: var(--fg-2); }

/* === SOLUTION === */
.solution-inner { max-width: 1200px; margin: 0 auto; padding: 0 64px; }
.solution-lead {
  font-size: 20px;
  color: var(--fg-2);
  max-width: 640px;
  line-height: 1.7;
  margin-bottom: 64px;
  border-left: 3px solid var(--accent);
  padding-left: 24px;
}
.solution-features { display: flex; flex-direction: column; gap: 0; }
.sf-row {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}
.sf-row:first-child { border-top: 1px solid var(--border); }
.sf-number {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 48px;
  color: var(--accent);
  opacity: 0.5;
  line-height: 1;
}
.sf-content h3 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 24px;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}
.sf-content p { font-size: 15px; color: var(--fg-2); line-height: 1.7; }
.sf-content em { color: var(--fg); font-style: normal; }

/* === RAIL STATS === */
.rail-section {
  background: var(--bg-3);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 64px 0;
}
.rail-inner { max-width: 1200px; margin: 0 auto; padding: 0 64px; }
.rail-stat-block {
  display: flex;
  align-items: center;
  margin-bottom: 48px;
}
.rail-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 64px 0 0;
}
.rail-stat:first-child { padding-left: 0; }
.rail-stat-num {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 64px;
  color: var(--accent);
  line-height: 1;
}
.rail-stat-desc {
  font-size: 13px;
  color: var(--fg-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 8px;
  text-align: center;
}
.rail-stat-div {
  width: 1px;
  height: 64px;
  background: var(--border-2);
  margin-right: 64px;
  flex-shrink: 0;
}
.accessories-label {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-2);
  margin-bottom: 16px;
}
.accessories-list { display: flex; flex-wrap: wrap; gap: 8px; }
.acc-tag {
  padding: 6px 14px;
  background: var(--accent-dim);
  border: 1px solid rgba(217, 119, 6, 0.25);
  border-radius: 2px;
  font-size: 13px;
  color: var(--fg-2);
  letter-spacing: 0.05em;
}

/* === COMPARE === */
.compare { background: var(--bg-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.compare-inner { max-width: 1200px; margin: 0 auto; padding: 0 64px; }
.compare-table { overflow-x: auto; }
.ct-header, .ct-row {
  display: grid;
  grid-template-columns: 2fr 1.5fr 1.8fr 1.8fr 1fr 0.8fr;
  gap: 16px;
  padding: 14px 16px;
  align-items: center;
}
.ct-header {
  border-bottom: 2px solid var(--accent);
  margin-bottom: 4px;
}
.ct-header .ct-col {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--fg-2);
}
.ct-row { border-bottom: 1px solid var(--border); }
.ct-row-us {
  background: var(--accent-dim);
  border: 1px solid rgba(217, 119, 6, 0.3);
  border-radius: 2px;
}
.ct-col { font-size: 13px; color: var(--fg-2); }
.ct-col-brand { font-weight: 600; color: var(--fg); }
.yes { color: var(--success); font-weight: 500; }
.no { color: var(--danger); }
.partial { color: #F59E0B; }
.compare-footnote {
  font-size: 11px;
  color: var(--fg-2);
  margin-top: 16px;
  opacity: 0.7;
}

/* === PATENTS === */
.patents { background: var(--bg); }
.patents-inner { max-width: 1200px; margin: 0 auto; padding: 0 64px; display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.patents-badge h2 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 48px;
  letter-spacing: 0.05em;
  color: var(--fg);
  margin-bottom: 12px;
}
.patents-badge p { font-size: 16px; color: var(--fg-2); line-height: 1.6; }
.patent-icon { color: var(--accent); margin-bottom: 24px; }
.patents-list { display: flex; flex-direction: column; gap: 16px; }
.patent-item {
  border: 1px solid var(--border);
  padding: 20px 24px;
  background: var(--bg-2);
  border-radius: 2px;
}
.patent-num {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 4px;
}
.patent-title { font-size: 14px; color: var(--fg); }

/* === BUILT === */
.built { background: var(--bg-2); border-top: 1px solid var(--border); }
.built-inner { max-width: 1200px; margin: 0 auto; padding: 0 64px; }
.built-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
.built-body { font-size: 16px; color: var(--fg-2); line-height: 1.7; margin-bottom: 40px; }
.built-specs { display: flex; flex-direction: column; gap: 0; }
.bs-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.bs-item:first-child { border-top: 1px solid var(--border); }
.bs-label { font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-2); }
.bs-value { font-size: 14px; color: var(--fg); }
.built-right { display: flex; flex-direction: column; gap: 24px; }
.market-block {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 28px 32px;
  border-radius: 2px;
}
.market-label { font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--fg-2); margin-bottom: 8px; }
.market-num { font-family: 'Bebas Neue', sans-serif; font-size: 52px; color: var(--accent); line-height: 1; margin-bottom: 6px; }
.market-sub { font-size: 13px; color: var(--fg-2); }

/* === CLOSING === */
.closing { background: var(--bg); border-top: 1px solid var(--border); }
.closing-inner { max-width: 1200px; margin: 0 auto; padding: 0 64px; text-align: center; }
.closing-headline {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(36px, 4vw, 56px);
  letter-spacing: 0.02em;
  color: var(--fg);
  margin-bottom: 16px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}
.closing-body {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 96px;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 64px;
}
.closing-cta-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.cta-patent {
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg-2);
  padding: 8px 20px;
  border: 1px solid var(--border-2);
  border-radius: 2px;
}
.cta-message {
  font-size: 16px;
  color: var(--fg-2);
  max-width: 480px;
  text-align: center;
  line-height: 1.6;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .hero { grid-template-columns: 1fr; padding: 100px 24px 60px; gap: 48px; }
  .hero-visual { display: none; }
  .problem-grid { grid-template-columns: 1fr; }
  .ct-header, .ct-row { grid-template-columns: 1.5fr 1fr 1fr; }
  .ct-col:nth-child(n+3) { display: none; }
  .built-grid { grid-template-columns: 1fr; gap: 48px; }
  .patents-inner { grid-template-columns: 1fr; }
  .rail-stat-block { flex-wrap: wrap; gap: 32px; }
  .rail-stat { padding: 0; }
  .rail-stat-div { display: none; }
  .nav-links { display: none; }
  .nav { padding: 0 20px; }
  .problem-inner, .solution-inner, .rail-inner, .compare-inner, .built-inner, .closing-inner { padding: 0 24px; }
  section { padding: 64px 0; }
  .sf-row { grid-template-columns: 1fr; gap: 12px; }
}