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

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: #e5e7eb;
  line-height: 1.7;
  min-height: 100vh;
}

.container {
  max-width: 1000px;
  margin: auto;
  padding: 40px 32px 80px;
  text-align: center;
}

h1, h2 {
  color: #ffffff;
  line-height: 1.2;
  font-weight: 700;
  padding: 20px 0;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #ffffff 0%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 0.8s ease-out;
}

h2 {
  margin-top: 0;
  font-size: 2rem;
  margin-bottom: 20px;
  color: #38bdf8;
}

p {
  font-size: 1.125rem;
  color: #cbd5e1;
  max-width: 800px;
  margin: 0 auto 16px;
  line-height: 1.8;
  text-align: justify;
}

.tagline {
  font-size: 2.5rem;
  color: #38bdf8;
  margin-bottom: 48px;
  font-weight: 500;
  animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.section {
  background: rgba(30, 41, 59, 0.5);
  border-radius: 16px;
  padding: 48px;
  margin: 48px auto;
  border: 1px solid rgba(56, 189, 248, 0.1);
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  animation: fadeInUp 0.8s ease-out;
  max-width: 900px;
}

.section:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.hero {
  text-align: center;
  margin-bottom: 64px;
  animation: fadeInUp 0.8s ease-out;
}

footer {
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid rgba(56, 189, 248, 0.2);
  font-size: 0.95rem;
  color: #94a3b8;
  text-align: center;
}

footer p {
  font-size: 0.95rem;
  margin-bottom: 12px;
}

a {
  color: #38bdf8;
  text-decoration: none;
  transition: color 0.3s ease;
  position: relative;
}

a:hover {
  color: #7dd3fc;
}

a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -2px;
  left: 0;
  background-color: #38bdf8;
  transition: width 0.3s ease;
}

a:hover::after {
  width: 100%;
}

header {
  background: rgba(15, 23, 42, 0.95);
  padding: 24px 32px;
  border-bottom: 1px solid rgba(56, 189, 248, 0.2);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.header-content {
  max-width: 1000px;
  margin: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-section img {
  width: 48px;
  height: 48px;
  border-radius: 8px;
}

.logo-section h1 {
  font-size: 2rem;
  margin: 0;
  background: linear-gradient(135deg, #ffffff 0%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: none;
}

nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 24px;
}

nav a {
  color: #38bdf8;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
  font-size: 1.05rem;
}

nav a:hover {
  color: #7dd3fc;
}

.nav-separator {
  color: #475569;
  margin: 0 4px;
}

.video-link {
  display: flex;
  align-items: center;
  gap: 8px;
}

nav svg {
  transition: transform 0.3s ease;
}

nav a:hover svg {
  transform: scale(1.1);
}

strong {
  color: #38bdf8;
  font-weight: 600;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }

  .logo-section h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .section {
    padding: 32px 24px;
  }

  .container {
    padding: 40px 20px;
  }

  nav {
    flex-direction: column;
    gap: 16px;
  }

  .logo-section {
    flex-direction: column;
    gap: 12px;
  }

  .logo-section img {
    width: 40px;
    height: 40px;
  }
}