.footer {
      width: 100%;
      background: #e0e7ff;
      color: #22223b;
      padding: 1.2rem 0 1.2rem 0;
      border-top: 1px solid #a3bffa;
      margin-top: 2rem;
      font-size: 1rem;
    }
    .footer-content {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      padding: 0 1rem;
    }
    .footer-links {
      display: flex;
      gap: 1rem;
      font-size: 1rem;
    }
    .footer-link {
      color: #7c83fd;
      text-decoration: none;
      transition: color 0.2s;
    }
    .footer-link:hover {
      color: #22223b;
      text-decoration: underline;
    }
    @media (max-width: 600px) {
      .footer-content {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
      }
      .footer-links {
        gap: 0.7rem;
      }
    }
    header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 2rem 1rem 1rem 1rem;
      background: #a3bffa;
      color: #22223b;
      border-bottom: 2px solid #7c83fd;
      box-shadow: 0 2px 8px #a3bffa33;
    }
    .logo {
      font-size: 2.5rem;
      font-weight: bold;
      letter-spacing: 2px;
    }
    .header-nav {
      display: flex;
      gap: 1rem;
    }
    .header-btn {
      background: #fff;
      color: #7c83fd;
      border: 1px solid #7c83fd;
      border-radius: 6px;
      padding: 0.4rem 1.1rem;
      font-size: 1rem;
      font-family: inherit;
      font-weight: 500;
      cursor: pointer;
      transition: background 0.2s, color 0.2s, border 0.2s;
      box-shadow: 0 1px 4px #a3bffa22;
    }
    .header-btn:hover {
      background: #7c83fd;
      color: #fff;
      border: 1px solid #22223b;
    }
    @media (max-width: 600px) {
      header {
        flex-direction: column;
        align-items: flex-start;
        padding: 1.2rem 0.5rem 0.7rem 0.5rem;
      }
      .logo {
        font-size: 1.5rem;
        margin-bottom: 0.7rem;
      }
      .header-nav {
        gap: 0.5rem;
        width: 100%;
        flex-wrap: wrap;
      }
      .header-btn {
        font-size: 0.95rem;
        padding: 0.3rem 0.7rem;
      }
    }
    body {
      background: linear-gradient(135deg, #f8fafc 0%, #e0e7ff 100%);
      font-family: 'Fira Mono', 'Consolas', monospace;
      margin: 0;
      padding: 0;
      color: #22223b;
    }
    header {
      text-align: center;
      padding: 2rem 1rem 1rem 1rem;
      background: #a3bffa;
      color: #22223b;
      font-size: 2.5rem;
      font-weight: bold;
      letter-spacing: 2px;
      border-bottom: 2px solid #7c83fd;
      box-shadow: 0 2px 8px #a3bffa33;
    }
    .container {
      max-width: 900px;
      margin: 2rem auto;
      padding: 1rem;
      background: #fff;
      border-radius: 16px;
      box-shadow: 0 4px 24px #a3bffa22;
    }
    .art-block {
      background: #f1f5f9;
      border-radius: 10px;
      margin: 1.5rem 0;
      padding: 1rem 1.5rem;
      position: relative;
      box-shadow: 0 2px 8px #a3bffa11;
      transition: box-shadow 0.2s;
    }
    .art-block:hover {
      box-shadow: 0 4px 16px #a3bffa33;
    }
    pre {
      margin: 0;
      font-size: 1.1rem;
      line-height: 1.3;
      background: none;
      color: #22223b;
      overflow-x: auto;
    }
    .copy-btn {
      position: absolute;
      top: 1rem;
      right: 1.5rem;
      background: #7c83fd;
      color: #fff;
      border: none;
      border-radius: 6px;
      padding: 0.3rem 1rem;
      font-size: 1rem;
      cursor: pointer;
      transition: background 0.2s;
    }
    .copy-btn:hover {
      background: #22223b;
      color: #fff;
    }
    @media (max-width: 600px) {
      .container { padding: 0.5rem; }
      .art-block { padding: 0.5rem 0.5rem; }
      .copy-btn { right: 0.5rem; top: 0.5rem; }
    }