.coa-container {
      max-width: 1200px;
      margin: 80px auto;
      padding: 40px 20px;
    }
    .coa-header {
      display: flex;
      justify-content: space-between;
      align-items: start;
      gap: 40px;
      margin-bottom: 60px;
      flex-wrap: wrap;
    }
    .coa-header > div {
      flex: 1;
      min-width: 300px;
    }
    .coa-header h1 {
      font-family: var(--font-display);
      font-size: 2.5em;
      margin-bottom: 16px;
      line-height: 1.2;
    }
    .coa-header p {
      color: var(--muted);
      line-height: 1.6;
      font-size: 1.1em;
    }
    .coa-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
      gap: 32px;
      margin-bottom: 60px;
    }
    .coa-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--line);
      border-radius: 12px;
      padding: 32px;
      transition: all 0.2s;
    }
    .coa-card:hover {
      border-color: var(--accent);
      transform: translateY(-4px);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    }
    .coa-card h3 {
      font-family: var(--font-display);
      font-size: 1.4em;
      margin-bottom: 12px;
      color: var(--text);
    }
    .coa-card p {
      color: var(--muted);
      margin-bottom: 24px;
      line-height: 1.6;
    }
    .coa-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }
    .coa-actions .btn {
      flex: 1;
      min-width: 120px;
      text-align: center;
    }
    .upload-note {
      background: rgba(255, 193, 7, 0.08);
      border: 1px solid rgba(255, 193, 7, 0.3);
      border-radius: 12px;
      padding: 24px;
      color: var(--muted);
      font-size: 0.95em;
      line-height: 1.7;
      margin-top: 60px;
    }
    .upload-note strong {
      color: var(--text);
    }
    .upload-note code {
      background: rgba(0, 0, 0, 0.1);
      padding: 2px 6px;
      border-radius: 4px;
      font-family: 'Courier New', monospace;
    }
    @media (max-width: 768px) {
      .coa-container {
        margin: 40px auto;
        padding: 20px;
      }
      .coa-header {
        flex-direction: column;
        margin-bottom: 40px;
      }
      .coa-header h1 {
        font-size: 2em;
      }
      .coa-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
    }