/* ---------- Reset & base ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #F7F6F3;
  --bg-white: #FDFCFA;
  --text: #14181D;
  --text-muted: #45494F;
  --text-faint: #75797F;
  --text-faintest: #6B7684;
  --border: #D9D7D2;
  --border-light: #E4E2DD;
  --accent: #E84E1B;
  --green: #4ADE80;
  --green-dark: #1E7A46;
  --red: #FF5A52;
  --amber: #FFB454;

  --dark-bg: #0A0E12;
  --dark-panel: #11161C;
  --dark-border: #1A212A;
  --dark-border-2: #4A5260;
  --dark-text: #E8EDF2;
  --dark-text-muted: #A8B2BD;

  --font-sans: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.4;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }

img { max-width: 100%; display: block; }

.mono { font-family: var(--font-mono); }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.25; }
}

@keyframes fleetScroll {
  0% { transform: translateY(0); }
  100% { transform: translateY(-50%); }
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}

.dot--green { background: var(--green); }
.dot--blink { animation: blink 2s infinite; }

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  padding-top: 18px;
  padding-bottom: 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.logo__text {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text);
}

.logo:hover .logo__text { color: var(--text); }

.logo--small .logo__text { font-size: 17px; }
.logo--small { gap: 3px; }

.nav__links {
  display: flex;
  align-items: center;
  gap: 36px;
  flex-wrap: wrap;
}

.nav__links > a:not(.btn) {
  font-size: 15px;
  color: var(--text-muted);
}

.btn {
  font-size: 15px;
  font-weight: 600;
  padding: 10px 22px;
  display: inline-block;
}

.btn--primary {
  background: var(--accent);
  color: var(--bg-white);
}

.btn--primary:hover { color: var(--bg-white); opacity: 0.92; }

/* ---------- Hero ---------- */
.hero {
  padding: 96px 0 88px;
}

.eyebrow-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.eyebrow--accent { color: var(--accent); }
.eyebrow--green { color: var(--green); }

.badge {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text);
  border: 1px solid var(--text);
  padding: 4px 10px;
}

.hero__title {
  font-size: 76px;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.02;
  max-width: 900px;
}

.hero__subtitle {
  font-size: 21px;
  line-height: 1.55;
  color: var(--text-muted);
  max-width: 640px;
  margin-top: 28px;
}

/* ---------- Fleet instrument ---------- */
.instrument {
  margin-top: 56px;
  background: var(--dark-bg);
  border: 1px solid var(--dark-bg);
}

.instrument__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  border-bottom: 1px solid var(--dark-border);
}

.instrument__status {
  display: flex;
  align-items: center;
  gap: 10px;
}

.instrument__label {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dark-text);
}

.instrument__clock {
  font-size: 12px;
  color: var(--text-faintest);
}

.instrument__scroller {
  height: 195px;
  overflow: hidden;
  position: relative;
  border-bottom: 1px solid var(--dark-border);
}

.instrument__track {
  position: absolute;
  width: 100%;
  animation: fleetScroll 24s linear infinite;
}

.fleet-row {
  display: grid;
  grid-template-columns: 120px 95px 1fr 150px 110px;
  gap: 14px;
  padding: 15px 24px;
  border-bottom: 1px solid var(--dark-border);
  align-items: center;
  font-family: var(--font-mono);
  font-size: 14px;
  height: 65px;
  box-sizing: border-box;
}

.fleet-row__state {
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.fleet-row__state-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

.fleet-row__tail { color: var(--dark-text); }

.fleet-row__detail {
  color: var(--dark-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.fleet-row__amount { text-align: right; }

.fleet-row__notify { text-align: right; }

.fleet-row__notify-badge {
  border: 1px solid currentColor;
  padding: 6px 12px;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  display: inline-block;
}

.instrument__footer {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding: 14px 24px;
  font-size: 13px;
}

.instrument__footer-left { color: var(--text-faintest); }
.instrument__footer-right { color: var(--green); }

/* ---------- Generic sections ---------- */
.section {
  padding: 88px 0;
}

.section--light { background: var(--bg); }
.section--white { background: var(--bg-white); border-top: 2px solid var(--text); }
.section--dark { background: var(--dark-bg); color: var(--dark-text); border-top: 1px solid var(--dark-border); }

.section__title {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 20px 0 16px;
  max-width: 800px;
}

.section__title--dark { color: var(--dark-text); }

.section__subtitle {
  font-size: 17px;
  line-height: 1.6;
  color: var(--text-muted);
  max-width: 660px;
  margin-bottom: 48px;
}

.section__subtitle--dark { color: var(--dark-text-muted); max-width: none; margin-bottom: 0; }

/* ---------- Problem stat grid ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-top: 8px;
}

.stat-card {
  background: var(--bg-white);
  padding: 28px 30px;
}

.stat-card__number {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.stat-card__number--accent { color: var(--accent); }

.stat-card__number-suffix {
  font-size: 20px;
  font-weight: 400;
  color: var(--text-faint);
}

.stat-card__label {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin: 8px 0 14px;
}

.stat-card__body {
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--text-muted);
}

/* ---------- Video section ---------- */
.video-layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 56px;
  align-items: center;
}

.video-embed {
  position: relative;
  padding-top: 56.25%;
  background: var(--dark-panel);
  border: 1px solid var(--dark-border);
}

.video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* ---------- Steps ---------- */
.steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--text);
}

.step {
  display: grid;
  grid-template-columns: 90px 300px 1fr;
  gap: 32px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
}

.step__number { font-size: 15px; color: var(--accent); }

.step__title {
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.01em;
}

.step__body {
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--text-muted);
}

/* ---------- Impact table ---------- */
.impact-table {
  border: 1px solid var(--text);
  background: var(--bg-white);
}

.impact-table__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 28px;
  border-bottom: 1px solid var(--text);
  flex-wrap: wrap;
  gap: 8px;
}

.impact-table__title { font-weight: 700; font-size: 16px; }

.impact-table__meta {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-faint);
}

.impact-table__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.impact-cell {
  padding: 28px;
  border-right: 1px solid var(--border-light);
}

.impact-cell--last { border-right: none; }

.impact-cell__label {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 10px;
}

.impact-cell__value {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.impact-cell__value--accent { color: var(--accent); }

.impact-cell__unit {
  font-size: 18px;
  font-weight: 400;
  color: var(--text-faint);
}

.impact-table__note {
  padding: 14px 28px;
  border-top: 1px solid var(--border-light);
  font-size: 12px;
  color: var(--text-faint);
}

/* ---------- Environment ---------- */
.env-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--text);
}

.env-cell {
  background: var(--bg-white);
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.env-cell--list {
  justify-content: center;
  gap: 18px;
}

.env-cell__number {
  font-size: 56px;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1;
}

.env-cell__label-spaced { margin-top: 4px; }

.env-cell__equivalent {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.env-point {
  display: flex;
  gap: 14px;
  align-items: baseline;
  font-size: 16px;
  line-height: 1.55;
  color: #2C3036;
}

.env-point__number {
  font-size: 13px;
  color: var(--accent);
  flex-shrink: 0;
}

/* ---------- Credibility ---------- */
.credibility__statement {
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.25;
  max-width: 880px;
  margin-top: 20px;
}

.credibility__photo-wrap { margin-top: 56px; padding-bottom: 72px; }

.credibility__photo {
  width: 100%;
  height: 360px;
  object-fit: cover;
  background: #1A1F26;
}

/* ---------- Footer ---------- */
.footer {
  border-top: 2px solid var(--text);
  background: var(--bg);
}

.footer__inner {
  padding-top: 32px;
  padding-bottom: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer__meta {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.footer__email {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero__title { font-size: 52px; }
  .section__title { font-size: 34px; }
  .stat-grid { grid-template-columns: 1fr; }
  .video-layout { grid-template-columns: 1fr; gap: 32px; }
  .steps { border-top: none; }
  .step { grid-template-columns: 1fr; gap: 8px; }
  .impact-table__grid { grid-template-columns: 1fr 1fr; }
  .impact-cell:nth-child(2) { border-right: none; }
  .impact-cell:nth-child(3), .impact-cell:nth-child(4) { border-top: 1px solid var(--border-light); }
  .env-grid { grid-template-columns: 1fr; }
  .fleet-row { grid-template-columns: 90px 80px 1fr; }
  .fleet-row__amount, .fleet-row__notify { display: none; }
}

@media (max-width: 640px) {
  .container { padding: 0 20px; }
  .nav__links { gap: 18px; }
  .nav__links > a:not(.btn) { display: none; }
  .hero { padding: 56px 0 56px; }
  .hero__title { font-size: 38px; }
  .hero__subtitle { font-size: 18px; }
  .section { padding: 56px 0; }
  .credibility__statement { font-size: 26px; }
  .credibility__photo { height: 220px; }
}