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

body {
  font-family: 'Roboto', sans-serif;
  background: #0a0a0a;
  color: #e0e0e0;
  overflow-x: hidden;
  line-height: 1.6;
}

h1, h2, h3 {
  font-family: 'Orbitron', sans-serif;
  letter-spacing: 2px;
}

/* Hero Section */
.hero {
  height: 100vh;
  min-height: 700px;
  background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.8)), url('https://w0.peakpx.com/wallpaper/440/769/HD-wallpaper-yamaha-yamaha-yzf-r1.jpg') center/cover no-repeat fixed;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
}

.hero-content {
  max-width: 1100px;
  padding: 0 20px;
  opacity: 0;
  transform: translateY(50px) scale(0.95);
  transition: all 1.8s ease-out;
}

.hero-content.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.hero h1 {
  font-size: clamp(3.5rem, 10vw, 9rem);
  color: #ff6600;
  text-shadow: 0 0 30px #ff6600aa, 0 0 60px #000;
  margin-bottom: 20px;
  animation: glow 3s infinite alternate;
}

@keyframes glow {
  from { text-shadow: 0 0 20px #ff6600aa, 0 0 40px #ff660055; }
  to   { text-shadow: 0 0 40px #ff6600ff, 0 0 80px #ff6600aa; }
}

.hero p {
  font-size: 1.6rem;
  max-width: 800px;
  margin: 0 auto 40px;
  color: #ccc;
}

.btn {
  display: inline-block;
  padding: 16px 50px;
  background: #ff6600;
  color: white;
  text-decoration: none;
  font-size: 1.3rem;
  font-weight: bold;
  border-radius: 50px;
  transition: all 0.4s;
  box-shadow: 0 0 30px #ff660080;
}

.btn:hover {
  transform: translateY(-5px) scale(1.08);
  background: #ff8533;
  box-shadow: 0 0 50px #ff6600cc;
}

/* Sections */
section {
  padding: 120px 20px;
  max-width: 1400px;
  margin: 0 auto;
}

h2 {
  font-size: 3.5rem;
  text-align: center;
  margin-bottom: 60px;
  color: #ff6600;
  position: relative;
}

h2::after {
  content: '';
  width: 120px;
  height: 5px;
  background: #ff6600;
  position: absolute;
  bottom: -15px;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 5px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 40px;
}

.card {
  background: #111;
  padding: 40px 30px;
  border-radius: 15px;
  border: 1px solid #222;
  transition: all 0.5s;
  opacity: 0;
  transform: translateY(40px);
}

.card.visible {
  opacity: 1;
  transform: translateY(0);
}

.card:hover {
  transform: translateY(-15px);
  border-color: #ff6600;
  box-shadow: 0 20px 40px rgba(255,102,0,0.2);
}

.card h3 {
  color: #ff8533;
  margin-bottom: 20px;
  font-size: 1.8rem;
}

.motion-bike {
  width: 100%;
  max-width: 900px;
  margin: 80px auto;
  display: block;
  border-radius: 20px;
  box-shadow: 0 0 60px rgba(0,0,0,0.9);
  opacity: 0;
  transform: scale(0.9);
  transition: all 1.5s ease-out;
}

.motion-bike.visible {
  opacity: 1;
  transform: scale(1);
}

.keyword-list {
  background: #111;
  padding: 40px;
  border-radius: 20px;
  border: 1px solid #222;
  line-height: 2;
  font-size: 1.1rem;
}

.keyword-list p {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.keyword-list span {
  color: #ff6600;
  font-weight: bold;
}

footer {
  background: #000;
  text-align: center;
  padding: 60px 20px;
  font-size: 1.1rem;
  color: #888;
}

.nav-link {
  text-align: center;
  margin-top: 40px;
}

.nav-link a {
  color: #ff6600;
  font-size: 1.2rem;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: 0.3s;
}

.nav-link a:hover {
  border-bottom-color: #ff6600;
}

@media (max-width: 768px) {
  .hero h1 { font-size: 5rem; }
  section { padding: 80px 15px; }
  h2 { font-size: 2.5rem; }
}