:root {
  --bg: #0A0D11;
  --surface: #111318;
  --surface-2: #181B21;
  --border: #22262F;
  --text: #E8E6E1;
  --text-dim: #7A7D85;
  --accent: #F59E0B;
  --accent-dim: rgba(245, 158, 11, 0.12);
  --green: #22C55E;
  --font-display: 'Syne', sans-serif;
  --font-body: 'Figtree', sans-serif;
}

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

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Altimeter bar */
.altimeter-bar {
  display: flex;
  gap: 3px;
  padding: 12px 48px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.altimeter-segment {
  flex: 1;
  height: 4px;
  border-radius: 2px;
  background: var(--border);
}
.altimeter-segment.active {
  background: var(--accent);
}

/* Section layout */
.section-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 48px;
}

.section-label {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.section-headline {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800;
  line-height: 1.1;
  color: var(--text);
  margin-bottom: 24px;
}

.section-body {
  font-size: 17px;
  color: var(--text-dim);
  max-width: 640px;
  margin-bottom: 48px;
}

/* Hero */
.hero {
  padding: 80px 0 96px;
}
.hero-grid {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 48px;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 64px;
  align-items: center;
}
.hero-tag {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
  display: inline-block;
  background: var(--accent-dim);
  padding: 6px 14px;
  border-radius: 100px;
  border: 1px solid rgba(245, 158, 11, 0.25);
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 28px;
}
.headline-accent {
  color: var(--accent);
}
.hero-lede {
  font-size: 18px;
  color: var(--text-dim);
  line-height: 1.65;
  max-width: 520px;
  margin-bottom: 48px;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
}
.stat {
  display: flex;
  flex-direction: column;
}
.stat-value {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
}
.stat-unit {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
  margin-left: 2px;
}
.stat-label {
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 6px;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* Hero visual - altitude display */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.altitude-display {
  width: 100%;
}
.altitude-ring {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  border: 3px solid var(--border);
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  margin: 0 auto;
}
.ring-label {
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 8px;
}
.ring-value {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 800;
  color: var(--green);
  line-height: 1;
}
.ring-ticks {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
}
.tick {
  position: absolute;
  width: 2px;
  height: 12px;
  background: var(--border);
  top: -6px;
  left: 50%;
  border-radius: 1px;
  transform-origin: 50% 150px;
}
.tick:nth-child(1) { transform: rotate(0deg) translateX(-1px); }
.tick:nth-child(2) { transform: rotate(30deg) translateX(-1px); }
.tick:nth-child(3) { transform: rotate(60deg) translateX(-1px); }
.tick:nth-child(4) { transform: rotate(90deg) translateX(-1px); }
.tick:nth-child(5) { transform: rotate(120deg) translateX(-1px); }
.tick:nth-child(6) { transform: rotate(150deg) translateX(-1px); }
.tick:nth-child(7) { transform: rotate(180deg) translateX(-1px); }
.tick:nth-child(8) { transform: rotate(210deg) translateX(-1px); }
.tick:nth-child(9) { transform: rotate(240deg) translateX(-1px); }
.tick:nth-child(10) { transform: rotate(270deg) translateX(-1px); }
.tick:nth-child(11) { transform: rotate(300deg) translateX(-1px); }
.tick:nth-child(12) { transform: rotate(330deg) translateX(-1px); }
.altitude-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
  padding: 0 8px;
}
.fleet-label {
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.fleet-count {
  font-size: 13px;
  color: var(--green);
  font-weight: 500;
}

/* Problem section */
.problem {
  padding: 96px 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}
.problem-card {
  padding: 40px 36px;
  background: var(--surface-2);
  border: 1px solid var(--border);
}
.problem-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-dim);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 24px;
}
.problem-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.problem-card p {
  font-size: 15px;
  color: var(--text-dim);
  line-height: 1.65;
}

/* Solution section */
.solution {
  padding: 96px 0;
}
.solution-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--border);
}
.solution-item {
  display: flex;
  gap: 20px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
}
.solution-item:nth-child(odd) {
  padding-right: 48px;
  border-right: 1px solid var(--border);
}
.solution-item:nth-child(even) {
  padding-left: 48px;
}
.solution-marker {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.05em;
  flex-shrink: 0;
  width: 28px;
  margin-top: 2px;
}
.solution-text h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.solution-text p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.6;
}

/* How section */
.how {
  padding: 96px 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
}
.how-header {
  margin-bottom: 56px;
}
.how-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.who-card {
  padding: 36px 32px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 2px;
}
.who-icon {
  width: 52px;
  height: 52px;
  background: var(--accent-dim);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 24px;
}
.who-card h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  line-height: 1.3;
}
.who-card p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.65;
}

/* Manifesto section */
.manifesto {
  padding: 96px 0;
  border-top: 1px solid var(--border);
}
.manifesto-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 48px;
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: 48px;
  align-items: center;
}
.big-number {
  font-family: var(--font-display);
  font-size: 80px;
  font-weight: 800;
  color: var(--accent);
  display: block;
  line-height: 1;
}
.big-sub {
  font-size: 15px;
  color: var(--text-dim);
  display: block;
  margin-top: 8px;
  line-height: 1.4;
}
blockquote {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  border-left: 3px solid var(--accent);
  padding-left: 24px;
  font-style: normal;
}
cite {
  display: block;
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-dim);
  font-style: normal;
}
.manifesto-stats {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.mstat-value {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  color: var(--text);
}
.mstat-label {
  font-size: 12px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Closing section */
.closing {
  padding: 120px 0;
  border-top: 1px solid var(--border);
  background: var(--surface);
}
.closing-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 48px;
  text-align: center;
}
.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 52px);
  font-weight: 800;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: 20px;
}
.closing-accent {
  color: var(--accent);
}
.closing-sub {
  font-size: 18px;
  color: var(--text-dim);
  margin-bottom: 48px;
}
.closing-footer {
  display: flex;
  justify-content: center;
}
.closing-status {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Footer */
.footer {
  padding: 48px 0;
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 48px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-mark {
  width: 36px;
  height: 36px;
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}
.brand-name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
}
.footer-tagline {
  font-size: 14px;
  color: var(--text-dim);
}
.footer-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.meta-sep { color: var(--border); }
.footer-copy {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 8px;
}

/* Responsive */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero-visual { display: none; }
  .problem-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .solution-grid {
    grid-template-columns: 1fr;
  }
  .solution-item:nth-child(odd) {
    padding-right: 0;
    border-right: none;
  }
  .solution-item:nth-child(even) {
    padding-left: 0;
  }
  .how-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .manifesto-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }
  .manifesto-stats {
    flex-direction: row;
    justify-content: center;
    gap: 32px;
  }
}
@media (max-width: 600px) {
  .altimeter-bar { padding: 10px 24px; }
  .section-inner,
  .hero-grid,
  .manifesto-inner,
  .closing-inner,
  .footer-inner {
    padding: 0 24px;
  }
  .hero { padding: 56px 0 64px; }
  .hero-stats { gap: 20px; }
  .stat-value { font-size: 24px; }
  .section-headline { font-size: 26px; }
  .closing { padding: 80px 0; }
}