:root {
    --primary: #1db954;
    --background: #121212;
    --accent: #2e2e34;
    --highlight: #3b82f6;
    --danger: #e63946;
    --info: #3b82f6;
    --warning: #fbbf24;
    --success: #22c55e;
    --text: #e5e5e5;
    --header-height: 60px;
  }
  
  body {
    margin: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: var(--background);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
  }
  
  header {
    background: var(--accent);
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 2rem;
    box-shadow: 0 2px 8px #0003;
  }
  
  header img {
    height: 40px;
    margin-right: 1rem;
  }
  
  header h1 {
    font-size: 1.7rem;
    color: var(--primary);
    margin: 0;
  }
  
  #announcements {
    margin: 1rem auto 0 auto;
    max-width: 900px;
    width: 95%;
  }
  
  .announcement {
    border-radius: 8px;
    margin-bottom: 1rem;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1rem;
    box-shadow: 0 2px 8px #0002;
    position: relative;
  }
  
  .announcement.info { background: var(--info); color: #fff; }
  .announcement.warning { background: var(--warning); color: #222; }
  .announcement.success { background: var(--success); color: #fff; }
  .announcement.danger { background: var(--danger); color: #fff; }
  
  .announcement img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    border-radius: 6px;
  }
  
  .announcement .close-btn {
    position: absolute;
    top: 8px;
    right: 12px;
    background: transparent;
    border: none;
    font-size: 1.2rem;
    color: inherit;
    cursor: pointer;
  }
  
  main {
    flex: 1;
    max-width: 900px;
    margin: 2rem auto;
    width: 95%;
  }
  
  .hero {
    background: linear-gradient(90deg, var(--primary), var(--highlight));
    color: #fff;
    border-radius: 12px;
    padding: 2.5rem 2rem;
    box-shadow: 0 2px 16px #0003;
    margin-bottom: 2rem;
    text-align: center;
  }
  
  .hero h2 {
    font-size: 2.4rem;
    margin-bottom: 0.5rem;
  }
  
  .hero p {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
  }
  
  .hero .cta-btn {
    background: #fff;
    color: var(--primary);
    border: none;
    border-radius: 6px;
    padding: 0.8rem 2rem;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
  }
  
  .hero .cta-btn:hover {
    background: #e5e5e5;
  }
  
  .features {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
    margin-bottom: 2rem;
  }
  
  .feature-card {
    background: var(--accent);
    border-radius: 10px;
    padding: 1.5rem;
    flex: 1 1 220px;
    min-width: 200px;
    max-width: 260px;
    text-align: center;
    box-shadow: 0 2px 8px #0002;
  }
  
  .feature-card .icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    display: block;
  }
  
  footer {
    background: var(--accent);
    color: #aaa;
    text-align: center;
    padding: 1rem 0;
    font-size: 1rem;
    margin-top: auto;
    border-top: 1px solid #222;
  }

  .top-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
    height: var(--header-height);
  }
  
  .top-nav a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
    transition: color 0.2s;
    padding: 0.3rem 0.7rem;
    border-radius: 5px;
  }
  
  .top-nav a:hover,
  .top-nav a.active {
    background: var(--primary);
    color: #fff;
  }
  
  .nav-logo {
    height: 40px;
    margin-right: 1rem;
    vertical-align: middle;
  }