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

body {
  font-family: 'Roboto', sans-serif;
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
  color: #e0e6f0;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 90%;
  max-width: 900px;
  margin: 0 auto;
  padding: 1rem 0;
}

/* Header */
header {
  text-align: center;
  padding: 3rem 0 2rem;
  background: rgba(0, 0, 0, 0.3);
  box-shadow: 0 4px 15px rgba(0,0,0,0.5);
  border-radius: 0 0 20px 20px;
  backdrop-filter: blur(10px);
  color: white;
}

.header-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.4rem;
}

.hero-image {
  max-width: 280px;
  width: 80vw;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0, 200, 255, 0.6);
  transition: transform 0.3s ease;
}

.hero-image:hover {
  transform: scale(1.05);
}

header h1 {
  font-size: 3rem;
  font-weight: 700;
  text-shadow: 1px 1px 6px #00d2ff;
}

.tagline {
  font-size: 1.3rem;
  font-weight: 400;
  color: #a0c9ff;
  text-shadow: 0 0 8px #00aaff99;
}

/* Main content */
main {
  flex-grow: 1;
  background: rgba(255, 255, 255, 0.1);
  margin: 2rem 0 3rem;
  padding: 2.5rem 2rem;
  border-radius: 16px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.4);
  color: #f0f4ff;
}

h2 {
  color: #00caff;
  margin-bottom: 1rem;
  border-bottom: 3px solid #00aaff;
  padding-bottom: 0.4rem;
  font-weight: 700;
}

ul {
  list-style: none;
  margin-top: 1rem;
}

ul li {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  padding-left: 1.8rem;
  position: relative;
  color: #d0e8ff;
}

ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85rem;
  width: 12px;
  height: 12px;
  background-color: #00caff;
  border-radius: 50%;
  box-shadow: 0 0 8px #00caff;
}

/* Footer */
footer {
  text-align: center;
  padding: 1.2rem 0;
  color: #7fbfffcc;
  font-size: 0.95rem;
  border-top: 1px solid #00446655;
  background: rgba(0, 0, 0, 0.2);
  box-shadow: inset 0 1px 2px #0099ff33;
}

/* Responsive */
@media (max-width: 600px) {
  header h1 {
    font-size: 2.2rem;
  }

  main {
    padding: 1.5rem 1rem;
  }

  .hero-image {
    max-width: 90vw;
  }
}