:root {
    --bg: radial-gradient(1200px 1000px at 50% 10%, rgba(124, 58, 237, 0.15), transparent 80%),
      radial-gradient(900px 900px at 80% 90%, rgba(6, 182, 212, 0.1), transparent 80%),
      #050b18;
    --accent1: #7c3aed;
    --accent2: #06b6d4;
    --text: #f2f5fa;
    --muted: #a7b3c0;
    --card-bg: rgba(255, 255, 255, 0.06);
  }
  
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  body {
    font-family: 'Poppins', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    overflow-x: hidden;
    scroll-behavior: smooth;
    line-height: 1.6;
  }
  
  .container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 40px 50px;
  }
  
  /* HEADER */
  header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(90deg, rgba(124, 58, 237, 0.18), rgba(6, 182, 212, 0.12));
    border-radius: 20px;
    padding: 28px 40px;
    margin-bottom: 40px;
    box-shadow: 0 12px 40px rgba(124, 58, 237, 0.25);
    backdrop-filter: blur(10px);
  }
  
  .logo {
    font-family: 'Space Grotesk';
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--accent1), var(--accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 25px rgba(124, 58, 237, 0.5);
  }
  
  h1 {
    font-size: 2rem;
    line-height: 1.3;
  }
  
  .meta {
    color: var(--muted);
    font-size: 1rem;
    margin-top: 6px;
  }
  
  /* KARTEN */
  .intro-card {
    background: linear-gradient(145deg, rgba(124, 58, 237, 0.18), rgba(6, 182, 212, 0.1));
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 36px;
    margin: 30px 0;
    box-shadow: 0 8px 40px rgba(124, 58, 237, 0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
  
  .intro-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 45px rgba(6, 182, 212, 0.25);
  }
  
  /* TITEL */
  h2 {
    font-size: 1.4rem;
    margin-bottom: 16px;
    background: linear-gradient(90deg, var(--accent1), var(--accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 10px rgba(124, 58, 237, 0.4);
  }
  
  /* GRID */
  .intro-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
  }
  
  /* ITEMS */
  .intro-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
  }
  
  .icon {
    font-size: 1.6rem;
    flex-shrink: 0;
    filter: drop-shadow(0 0 6px rgba(124, 58, 237, 0.6));
    transition: transform 0.3s ease;
  }
  
  .intro-item:hover .icon {
    transform: scale(1.15) rotate(6deg);
  }
  
  .intro-item strong {
    font-size: 1.05rem;
    background: linear-gradient(90deg, var(--accent1), var(--accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
    margin-bottom: 6px;
  }
  
  /* LISTEN */
  ul {
    list-style-type: disc;
    margin-left: 18px; /* Weniger Einrückung */
    color: var(--muted);
    font-size: 0.95rem;
    margin-top: 4px;
    margin-bottom: 8px;
  }
  
  li {
    margin-bottom: 4px;
    padding-left: 4px;
  }
  
  li::marker {
    color: var(--accent1);
  }
  
  /* ABSÄTZE */
  .intro-item p {
    color: var(--muted);
    font-size: 0.95rem;
    margin-top: 4px;
  }
  
  /* MOBILE */
  @media (max-width: 768px) {
    header {
      flex-direction: column;
      text-align: center;
      padding: 24px;
    }
  
    .container {
      padding: 20px;
    }
  
    h1 {
      font-size: 1.6rem;
    }
  
    .intro-card {
      padding: 26px;
    }
  
    .intro-item strong {
      font-size: 1rem;
    }
  
    ul {
      margin-left: 14px;
    }
  
    li {
      font-size: 0.9rem;
    }
  }
  
  /* FOOTER & LINKS */
  footer {
    text-align: center;
    color: var(--muted);
    margin: 50px 0 20px;
  }
  
  button {
    background: linear-gradient(90deg, var(--accent1), var(--accent2));
    border: none;
    padding: 12px 22px;
    border-radius: 14px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
  }
  
  button:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 22px rgba(6, 182, 212, 0.4);
  }
  
  /* Quellenlinks */
  .sources {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 20px;
  }
  
  .source-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(90deg, rgba(124, 58, 237, 0.2), rgba(6, 182, 212, 0.15));
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 9px 16px;
    border-radius: 12px;
    color: #e5eaff;
    text-decoration: none;
    font-weight: 500;
    letter-spacing: 0.2px;
    backdrop-filter: blur(8px);
    transition: all 0.3s ease;
  }
  
  .source-link:hover {
    transform: translateY(-2px);
    background: linear-gradient(90deg, var(--accent1), var(--accent2));
    color: white;
    box-shadow: 0 0 18px rgba(124, 58, 237, 0.35);
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.4);
  }
  .intro-grid {
    display: grid;
    gap: 24px;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    align-items: stretch;
  }
  

  .intro-card.highlight {
    position: relative;
    background: linear-gradient(145deg, rgba(6, 182, 212, 0.18), rgba(124, 58, 237, 0.12));
    border: 1px solid rgba(6, 182, 212, 0.55);
    box-shadow:
      0 10px 40px rgba(6, 182, 212, 0.25),
      inset 0 0 0 1px rgba(255, 255, 255, 0.06);
  }
  
  .intro-card.highlight::before {
    content: "Fragen?";
    position: absolute;
    top: -12px;
    left: 20px;
    padding: 4px 10px;
    font-size: 12px;
    letter-spacing: 0.06em;
    border-radius: 999px;
    color: #fff;
    background: linear-gradient(90deg, var(--accent2), var(--accent1));
    box-shadow: 0 6px 16px rgba(124, 58, 237, 0.35);
  }
  
  .intro-card.highlight h2 {
    text-shadow: 0 0 14px rgba(6, 182, 212, 0.6);
  }
  
  .intro-card.highlight p {
    color: #e9fbff; /* etwas heller als var(--muted) */
    font-weight: 500;
  }