body {
  background: #181a1b;
  color: #e0e0e0;
  font-family: 'Segoe UI', 'Roboto', Arial, sans-serif;
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}
.container {
  max-width: 700px;
  margin: 48px 16px;
  background: #23272a;
  border-radius: 16px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.4);
  padding: 40px 32px;
}
h1 {
  color: #7ecfff;
  font-size: 2.5rem;
  margin-bottom: 24px;
  letter-spacing: 1px;
  text-align: center;
}
p {
  font-size: 1.15rem;
  line-height: 1.7;
  margin-bottom: 18px;
}
.bottom-nav {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100vw;
  background: #23272aee;
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding: 0 0;
  z-index: 1000;
  box-shadow: 0 -2px 16px rgba(0,0,0,0.4);
  height: 64px;
  backdrop-filter: blur(4px);
}
.bottom-nav a {
  flex: 1;
  text-align: center;
  color: #b0cfff;
  text-decoration: none;
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  transition: color 0.2s;
  padding: 6px 0 0 0;
}
.bottom-nav a.active, .bottom-nav a:hover {
  color: #7ecfff;
}
.bottom-nav svg {
  width: 24px;
  height: 24px;
  margin-bottom: 2px;
  display: block;
  fill: currentColor;
}
@media (max-width: 600px) {
  .container {
    padding: 24px 8px;
  }
  h1 {
    font-size: 2rem;
  }
  .bottom-nav {
    height: 56px;
  }
  .bottom-nav svg {
    width: 22px;
    height: 22px;
  }
  .bottom-nav a {
    font-size: 0.75rem;
  }
}