:root {
  --page-bg: #1c1917;
  --page-bg-mid: #292524;
  --accent-orange: #ea580c;
  --accent-orange-soft: rgba(234, 88, 12, 0.14);
  --card-bg: rgba(41, 37, 36, 0.72);
  --card-border: rgba(255, 255, 255, 0.1);
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  overflow-x: hidden;
}
.site-root {
  min-height: 100vh;
  background-color: var(--page-bg);
  background-image:
    radial-gradient(ellipse 100% 70% at 100% 0%, rgba(234, 88, 12, 0.1), transparent 55%),
    radial-gradient(ellipse 80% 50% at 0% 100%, rgba(251, 146, 60, 0.06), transparent 50%),
    linear-gradient(180deg, #292524 0%, var(--page-bg) 35%, #141210 100%);
}
.site-header {
  box-shadow: 0 1px 0 rgba(234, 88, 12, 0.06);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: 0.75rem;
  padding: 0.95rem 1.1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease,
    background 160ms ease, border-color 160ms ease;
  will-change: transform;
}
.btn:hover {
  transform: translateY(-2px);
}
.btn-solid {
  color: #1c1917;
  background: linear-gradient(135deg, #fed7aa, #fb923c);
  border: 1px solid rgba(234, 88, 12, 0.35);
}
.btn-solid:hover {
  box-shadow: 0 16px 48px rgba(234, 88, 12, 0.22);
}
.card {
  border: 1px solid var(--card-border);
  border-radius: 1rem;
  background: var(--card-bg);
}
.card:hover {
  border-color: rgba(251, 146, 60, 0.22);
}
.section-container {
  margin-left: auto;
  margin-right: auto;
  max-width: 68rem;
  padding-left: max(1rem, env(safe-area-inset-left));
  padding-right: max(1rem, env(safe-area-inset-right));
}
.hide-scrollbar {
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.hide-scrollbar::-webkit-scrollbar {
  display: none;
}
.snap-x-mandatory {
  scroll-snap-type: x mandatory;
}
.snap-item {
  scroll-snap-align: start;
}
.engine-logo {
  position: relative;
  isolation: isolate;
}
.engine-smoke {
  position: absolute;
  top: 50%;
  width: 22px;
  height: 22px;
  pointer-events: none;
  opacity: 0;
  filter: blur(0.3px);
  transform: translateY(-50%);
}
.engine-smoke.left {
  left: -12px;
  --dx: -12px;
}
.engine-smoke.right {
  right: -12px;
  --dx: 12px;
}
.engine-logo.is-smoking .engine-smoke {
  opacity: 1;
  animation: smokePuff 520ms ease-out forwards;
}
.engine-logo.is-smoking .engine-smoke.right {
  animation-delay: 60ms;
}
@keyframes smokePuff {
  0% {
    transform: translateY(-50%) translateX(0) scale(0.75);
    opacity: 0;
  }
  15% {
    opacity: 0.7;
  }
  100% {
    transform: translateY(-70%) translateX(var(--dx, -10px)) scale(1.35);
    opacity: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .engine-logo.is-smoking .engine-smoke {
    animation: none;
    opacity: 0;
  }
}
@media (max-width: 360px) {
  .btn {
    padding: 0.85rem 0.9rem;
  }
}

.hidden-gotcha {
  display: none;
}

.hero-cta-shell {
  position: relative;
  border: 1px solid rgba(251, 146, 60, 0.2);
  border-radius: 0.95rem;
  background: linear-gradient(110deg, rgba(41, 37, 36, 0.88), rgba(28, 25, 23, 0.82));
  overflow: hidden;
}
.smoke-slogan {
  position: absolute;
  inset: 0;
  z-index: 6;
  display: grid;
  place-items: center;
  pointer-events: none;
  padding: 1.2rem;
  overflow: hidden;
}
.smoke-slogan::before {
  content: "";
  position: absolute;
  inset: -8% -12%;
  background:
    radial-gradient(56% 38% at 22% 58%, rgba(12, 12, 12, 0.86) 0%, rgba(12, 12, 12, 0.58) 34%, rgba(12, 12, 12, 0.14) 62%, transparent 82%),
    radial-gradient(52% 34% at 68% 52%, rgba(18, 18, 18, 0.8) 0%, rgba(18, 18, 18, 0.52) 36%, rgba(18, 18, 18, 0.14) 63%, transparent 84%),
    radial-gradient(48% 30% at 46% 74%, rgba(8, 8, 8, 0.72) 0%, rgba(8, 8, 8, 0.42) 38%, rgba(8, 8, 8, 0.08) 64%, transparent 86%),
    linear-gradient(to bottom, rgba(0, 0, 0, 0.78), rgba(0, 0, 0, 0.48));
  filter: blur(10px);
  transform-origin: center;
  animation: dieselSmokeLayerA 5.4s ease-out forwards;
}
.smoke-slogan::after {
  content: "";
  position: absolute;
  inset: -10% -16%;
  background:
    radial-gradient(44% 28% at 12% 38%, rgba(20, 20, 20, 0.62) 0%, rgba(20, 20, 20, 0.28) 42%, transparent 78%),
    radial-gradient(46% 30% at 82% 34%, rgba(30, 30, 30, 0.56) 0%, rgba(30, 30, 30, 0.24) 46%, transparent 80%),
    radial-gradient(36% 24% at 52% 28%, rgba(36, 36, 36, 0.4) 0%, rgba(36, 36, 36, 0.12) 48%, transparent 82%);
  filter: blur(14px);
  animation: dieselSmokeLayerB 5.4s ease-out forwards;
}
.smoke-slogan-text {
  position: relative;
  z-index: 1;
  max-width: 52rem;
  text-align: center;
  font-size: clamp(1.06rem, 1.85vw, 1.72rem);
  line-height: 1.22;
  font-weight: 900;
  letter-spacing: 0.012em;
  color: rgba(250, 250, 250, 0.98);
  text-shadow:
    0 2px 14px rgba(0, 0, 0, 0.72),
    0 0 30px rgba(0, 0, 0, 0.46);
  animation: dieselSmokeText 5.4s ease-out forwards;
}
.smoke-text-phase {
  display: block;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 420ms ease, transform 420ms ease;
}
.smoke-text-phase.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.smoke-slogan.is-hidden {
  display: none;
}
@keyframes dieselSmokeLayerA {
  0% { opacity: 0; transform: translateX(-2%) translateY(4%) scale(1.03); }
  12% { opacity: 0.96; }
  52% { opacity: 1; transform: translateX(1.5%) translateY(-1%) scale(1); }
  100% { opacity: 0; transform: translateX(4%) translateY(-8%) scale(1.02); }
}
@keyframes dieselSmokeLayerB {
  0% { opacity: 0; transform: translateX(3%) translateY(6%) scale(1.06); }
  16% { opacity: 0.88; }
  58% { opacity: 0.8; transform: translateX(-1.5%) translateY(-2%) scale(1.01); }
  100% { opacity: 0; transform: translateX(-5%) translateY(-10%) scale(1); }
}
@keyframes dieselSmokeText {
  0% { opacity: 0; transform: translateY(14px) scale(0.985); filter: blur(3px); }
  16% { opacity: 1; transform: translateY(0) scale(1); filter: blur(0); }
  70% { opacity: 1; transform: translateY(0) scale(1); }
  100% { opacity: 0; transform: translateY(-8px) scale(1.015); filter: blur(1px); }
}
.hero-cta-row {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.45rem;
  padding: 0.45rem;
}
.hero-cta-btn {
  width: 100%;
  justify-content: space-between;
  padding: 0.95rem 1rem;
  border-radius: 0.7rem;
}
.hero-cta-btn-primary {
  color: #1c1917;
  background: linear-gradient(135deg, #ffedd5, #fb923c);
  border: 1px solid rgba(234, 88, 12, 0.35);
}
.hero-cta-btn-secondary {
  color: #fafaf9;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(251, 146, 60, 0.25);
}
.hero-cta-smoke {
  position: absolute;
  inset: -20% -10% -20% 55%;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(circle at 25% 45%, rgba(251, 146, 60, 0.22) 0%, rgba(251, 146, 60, 0.08) 24%, transparent 56%),
    radial-gradient(circle at 55% 40%, rgba(234, 88, 12, 0.16) 0%, rgba(234, 88, 12, 0.06) 28%, transparent 60%),
    radial-gradient(circle at 78% 58%, rgba(231, 231, 231, 0.1) 0%, transparent 58%);
  filter: blur(10px);
  opacity: 0.95;
}

@media (min-width: 640px) {
  .hero-cta-row {
    grid-template-columns: 1fr 1fr;
  }
}
@media (prefers-reduced-motion: reduce) {
  .smoke-slogan::before,
  .smoke-slogan::after,
  .smoke-slogan-text {
    animation-duration: 1ms;
    animation-iteration-count: 1;
  }
}

.contact-shell {
  border-color: rgba(251, 146, 60, 0.18);
  background: linear-gradient(125deg, rgba(41, 37, 36, 0.85), rgba(28, 25, 23, 0.75));
}
.contact-left {
  position: relative;
}
.contact-left::after {
  content: "";
  position: absolute;
  right: -80px;
  top: 18%;
  width: 220px;
  height: 220px;
  pointer-events: none;
  background: radial-gradient(circle, rgba(251, 146, 60, 0.14) 0%, rgba(234, 88, 12, 0.05) 38%, transparent 70%);
  filter: blur(6px);
}
.contact-note {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(251, 146, 60, 0.12);
}
.contact-right {
  background: linear-gradient(160deg, rgba(251, 146, 60, 0.06), rgba(28, 25, 23, 0.5));
}
.contact-link {
  border: 1px solid rgba(251, 146, 60, 0.15);
  background: linear-gradient(145deg, rgba(41, 37, 36, 0.55), rgba(28, 25, 23, 0.4));
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}
.contact-link:hover {
  transform: translateY(-2px);
  border-color: rgba(251, 146, 60, 0.4);
  background: linear-gradient(145deg, rgba(41, 37, 36, 0.72), rgba(67, 20, 7, 0.35));
}