:root {
      --bg-dark: #0a0b0e;
      --bg-darker: #050607;
      --text-primary: #f0f0f0;
      --text-secondary: #a0a0a0;
      --accent-color: #7c3aed;
      --accent-secondary: #06b6d4;
      --accent-gradient: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
      --card-bg: rgba(255, 255, 255, 0.03);
      --card-border: rgba(255, 255, 255, 0.05);
    }
    * { margin: 0; padding: 0; box-sizing: border-box; }
    body {
      font-family: 'Space Grotesk', sans-serif;
      background: radial-gradient(circle at top right, var(--bg-dark) 0%, var(--bg-darker) 100%);
      color: var(--text-primary);
      line-height: 1.7;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      position: relative;
      overflow-x: hidden;
    }
    .background-overlay {
      position: fixed;
      inset: 0;
      background: radial-gradient(circle at 20% 20%, rgba(124, 58, 237, 0.15) 0%, transparent 50%),
                 radial-gradient(circle at 80% 80%, rgba(6, 182, 212, 0.15) 0%, transparent 50%);
      pointer-events: none;
      z-index: 1;
      animation: pulseBackground 15s ease-in-out infinite alternate;
    }
    .noise-overlay {
      position: fixed;
      inset: 0;
      background: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIzMDAiIGhlaWdodD0iMzAwIj48ZmlsdGVyIGlkPSJhIj48ZmVUdXJidWxlbmNlIHR5cGU9ImZyYWN0YWxOb2lzZSIgYmFzZUZyZXF1ZW5jeT0iLjc1IiBzdGl0Y2hUaWxlcz0ic3RpdGNoIi8+PC9maWx0ZXI+PHJlY3Qgd2lkdGg9IjMwMCIgaGVpZ2h0PSIzMDAiIGZpbHRlcj0idXJsKCNhKSIgb3BhY2l0eT0iLjA1Ii8+PC9zdmc+');
      pointer-events: none;
      opacity: 0.4;
      z-index: 2;
    }
    .ad-banner {
      opacity: 0;
      transform: translateY(20px);
      width: min(90vw, 1200px);
      margin: 2rem auto;
      border-radius: clamp(16px, 3vw, 24px);
      aspect-ratio: 21/9;
      min-height: 90px;
      max-height: 280px;
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--card-bg);
      backdrop-filter: blur(20px);
      border: 1px solid var(--card-border);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 100px rgba(124, 58, 237, 0.1);
      transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
      overflow: hidden;
    }
    .ad-banner::before {
      content: '';
      position: absolute;
      inset: 0;
      background: var(--accent-gradient);
      opacity: 0.1;
      transition: opacity 0.3s ease;
    }
    .ad-banner::after {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), 
                 rgba(124, 58, 237, 0.15) 0%, transparent 50%);
      opacity: 0;
      transition: opacity 0.3s ease;
    }
    .ad-banner:hover::before { opacity: 0.15; }
    .ad-banner:hover::after { opacity: 1; }
    .ad-banner.loaded {
      opacity: 1;
      transform: translateY(0);
    }
    .ad-banner.error { display: none; }
    .ad-banner img {
      max-width: 100%;
      max-height: 100%;
      object-fit: contain;
      opacity: 0;
      transition: opacity 0.3s ease;
    }
    .ad-banner img.loaded { opacity: 1; }
    .ad-label {
      position: absolute;
      top: 15px;
      left: 15px;
      background: rgba(0, 0, 0, 0.6);
      color: var(--text-secondary);
      padding: 6px 12px;
      border-radius: 8px;
      font-size: clamp(0.65rem, 1.5vw, 0.75rem);
      font-weight: 500;
      letter-spacing: 0.5px;
      text-transform: uppercase;
      backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.1);
      z-index: 10;
    }
    .container {
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      padding: 3rem 2rem;
      max-width: 900px;
      margin: 0 auto;
      position: relative;
      z-index: 3;
    }
    .glassmorphic-card {
      background: var(--card-bg);
      border-radius: 24px;
      backdrop-filter: blur(20px);
      border: 1px solid var(--card-border);
      padding: 3rem;
      width: 100%;
      box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
      position: relative;
      overflow: hidden;
    }
    .content-wrapper {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 2rem;
      width: 100%;
    }
    footer {
      background: rgba(5, 6, 7, 0.8);
      padding: 1.5rem;
      text-align: center;
      backdrop-filter: blur(20px);
      position: relative;
      z-index: 3;
      border-top: 1px solid var(--card-border);
    }
    footer a {
      color: var(--accent-color);
      text-decoration: none;
      font-weight: 600;
      transition: all 0.3s ease;
    }
    footer a:hover { color: var(--accent-secondary); }
    @keyframes pulseBackground {
      0% { opacity: 0.5; transform: scale(1); }
      100% { opacity: 1; transform: scale(1.1); }
    }
    @media (max-width: 768px) {
      .ad-banner { aspect-ratio: 16/9; margin: 1rem auto; }
      .container { padding: 2rem 1rem; }
      .glassmorphic-card { padding: 2rem 1.5rem; }
    }
    @media (max-width: 480px) {
      .ad-banner { aspect-ratio: 4/3; }
    }