:root {
      --coral: #E95F47;
      --coral-deep: #D44A32;
      --coral-hover: #C94C37;
      --cream: #F5EFE6;
      --navy: #0B1F38;
      --ink: #1F2937;
      --beige: #DCCBBB;
      --beige-deep: #C7B2A0;
      --white: #FFFFFF;
      --page: #FAF7F2;
      --muted: rgba(31, 41, 55, .62);
      --line: rgba(31, 41, 55, .1);
      --sans: 'Lato', 'Helvetica Neue', Arial, sans-serif;
      --disp: 'Playfair Display', Georgia, 'Times New Roman', serif;
    }

    * {
      box-sizing: border-box;
    }

    .chart-container {
      background: var(--white);
      border-radius: 24px;
      padding: clamp(24px, 4vw, 48px);
      box-shadow: 0 20px 50px rgba(11, 31, 56, .12);
      margin-bottom: 32px;
      width: 100%;
      max-width: 100%;
      overflow: hidden;
    }

    .chart-header {
      margin-bottom: 32px;
    }

    .chart-header h3 {
      font-family: var(--disp);
      font-weight: 900;
      font-size: clamp(24px, 3vw, 32px);
      line-height: 1.1;
      margin: 0 0 8px;
      color: var(--navy);
    }

    .chart-header p {
      font-size: 14px;
      font-weight: 700;
      color: var(--muted);
      margin: 0;
    }

    .chart-wrapper {
      position: relative;
      height: 500px;
      margin-top: 24px;
      width: 100%;
      max-width: 100%;
    }

    .chart-wrapper.timeline {
      height: 400px;
    }

    @media (max-width: 768px) {
      .chart-wrapper {
        height: 600px;
      }

      .chart-wrapper.timeline {
        height: 500px;
      }
    }

    @media (max-width: 480px) {
      .chart-wrapper {
        height: 700px;
      }

      .chart-wrapper.timeline {
        height: 600px;
      }
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 20px;
      margin-top: 32px;
    }

    .stat-card {
      background: linear-gradient(135deg, var(--cream), #FDFCFB);
      border-radius: 16px;
      padding: 24px;
      border: 2px solid rgba(31, 41, 55, .05);
      box-shadow: 0 8px 20px rgba(0, 0, 0, .04);
    }

    .stat-card .label {
      font-size: 12px;
      font-weight: 900;
      text-transform: uppercase;
      letter-spacing: .14em;
      color: var(--muted);
      margin: 0 0 8px;
    }

    .stat-card .value {
      font-weight: 900;
      font-size: clamp(32px, 4vw, 48px);
      letter-spacing: -.04em;
      line-height: .95;
      color: var(--coral);
      margin: 0;
    }

    .stat-card .value small {
      font-size: .5em;
      color: var(--muted);
      font-weight: 700;
      margin-left: 4px;
    }

    .loading {
      text-align: center;
      padding: 48px;
      color: var(--muted);
      font-weight: 700;
    }

    .error {
      background: linear-gradient(135deg, #FEE, #FCC);
      border-radius: 16px;
      padding: 24px;
      color: #C00;
      font-weight: 700;
      margin: 32px 0;
    }

    .flag {
      display: inline-block;
      font-size: 1.2em;
      margin-right: 8px;
    }

    .platform-tiles {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
      margin-top: 48px;
      margin-bottom: 32px;
    }

    @media (max-width: 768px) {
      .platform-tiles {
        grid-template-columns: 1fr;
      }
    }

    .platform-tile {
      background: var(--white);
      border-radius: 24px;
      padding: clamp(28px, 4vw, 40px);
      box-shadow: 0 12px 40px rgba(11, 31, 56, .1);
      width: 100%;
      max-width: 100%;
      overflow: hidden;
    }

    .platform-tile-header {
      margin-bottom: 24px;
    }

    .platform-tile-header h4 {
      font-family: var(--sans);
      font-weight: 900;
      font-size: clamp(18px, 2.5vw, 22px);
      margin: 0 0 8px;
      color: var(--ink);
    }

    .platform-tile-header p {
      font-size: 13px;
      font-weight: 700;
      color: var(--muted);
      margin: 0;
      line-height: 1.4;
    }

    .platform-tile-value {
      margin: 24px 0;
    }

    .platform-tile-value .big-number {
      font-weight: 900;
      font-size: clamp(42px, 6vw, 56px);
      letter-spacing: -.04em;
      line-height: .95;
      color: var(--ink);
      display: block;
    }

    .platform-tile-value .label {
      font-size: 13px;
      font-weight: 700;
      color: var(--muted);
      margin-top: 4px;
      display: block;
    }

    .platform-tile-chart {
      position: relative;
      height: 180px;
      margin: 24px 0;
      width: 100%;
      max-width: 100%;
    }

    canvas {
      max-width: 100%;
      display: block;
    }

    .platform-tile-info {
      background: #D9E8E2;
      border-radius: 8px;
      padding: 16px;
      margin-top: 20px;
      font-size: 12px;
      line-height: 1;
      color: var(--ink);
    }

    .platform-tile-info p,
    .platform-tile-footer p {
      font-size: 1rem;
      margin-bottom: 0 !important;
    }

    .platform-tile-footer {
      margin-top: 16px;
      padding-top: 16px;
      border-top: 1px solid var(--line);
      font-size: 11px;
      color: var(--muted);
      font-weight: 700;
    }

    .platform-tile-footer a {
      color: var(--coral);
      text-decoration: none;
      font-weight: 900;
    }

    .separator-note {
      display: flex;
      align-items: center;
      gap: 24px;
      margin: 32px 0 24px;
    }

    .separator-note hr {
      flex: 1;
      border: none;
      border-top: 2px solid var(--line);
    }

    .separator-text {
      font-size: 11px;
      font-weight: 900;
      letter-spacing: .16em;
      text-transform: uppercase;
      color: var(--muted);
      white-space: nowrap;
      margin: 0;
    }

    .platform-note {
      background: #D9E8E2;
      border-radius: 12px;
      padding: 20px 24px;
      margin: 24px 0 32px;
    }

    .platform-note p {
      font-size: 14px;
      line-height: 1.6;
      color: var(--ink);
      margin: 0;
      font-weight: 700;
    }

    .platform-note strong {
      font-weight: 900;
      color: var(--ink);
    }

    .sources-section {
      margin-top: 64px;
      padding-top: 32px;
      border-top: 2px solid var(--line);
    }

    .sources-section h3 {
      font-family: var(--sans);
      font-weight: 900;
      font-size: 16px;
      text-transform: uppercase;
      letter-spacing: .08em;
      color: var(--ink);
      margin: 0 0 16px;
    }

    .sources-section p {
      font-size: 13px;
      line-height: 1.8;
      color: var(--muted);
      font-weight: 700;
      margin: 0;
    }

    .sources-section a {
      color: var(--coral);
      text-decoration: none;
      font-weight: 900;
    }

    .sources-section a:hover {
      text-decoration: underline;
    }

    .platform-filters {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 24px;
      margin-bottom: 32px;
    }

    .filter-chip {
      background: var(--white);
      border: 2px solid var(--line);
      border-radius: 999px;
      padding: 10px 20px;
      font-size: 13px;
      font-weight: 700;
      color: var(--ink);
      cursor: pointer;
      transition: all 0.2s;
      user-select: none;
    }

    .filter-chip:hover {
      border-color: var(--coral);
      background: var(--cream);
    }

    .filter-chip.active {
      background: var(--coral);
      color: var(--cream);
      border-color: var(--coral);
    }

    .platform-tile.hidden {
      display: none;
    }

    /* Social Media Charts Styles */
    /* K4 Social Media Charts Styling */
    .chart-wrapper {
      height: 400px;
      margin: 32px 0;
      background: #FFFFFF;
      border-radius: 16px;
      position: relative;
    }

    .chart-wrapper canvas {
      max-height: 100%;
    }

    /* Responsive Anpassungen */
    @media (max-width: 768px) {
      .chart-wrapper {
        height: 500px;
        padding: 16px;
      }
    }

    @media (max-width: 480px) {
      .chart-wrapper {
        height: 600px;
      }
    }