:root {
      --bg: #f6f7f9;
      --panel: #ffffff;
      --text: #17202a;
      --muted: #627386;
      --line: #d9e0e7;
      --accent: #2457c5;
      --accent-dark: #1d459c;
      --danger: #b42318;
    }
    * { box-sizing: border-box; }
    body {
      margin: 0;
      font-family: Arial, sans-serif;
      color: var(--text);
      background: var(--bg);
    }
    header {
      padding: 20px 28px;
      background: var(--panel);
      border-bottom: 1px solid var(--line);
    }
    h1 { margin: 0; font-size: 22px; }
    h2 { font-size: 16px; margin: 0 0 12px; }
    main {
      display: grid;
      grid-template-columns: 380px 1fr;
      gap: 18px;
      padding: 18px 28px 28px;
    }
    section {
      background: var(--panel);
      border: 1px solid var(--line);
      border-radius: 8px;
      padding: 16px;
    }
    .guide-panel {
      grid-column: 1 / -1;
      padding: 0;
      overflow: hidden;
    }
    .guide-panel details {
      padding: 0;
    }
    .guide-panel summary {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      align-items: center;
      cursor: pointer;
      padding: 14px 16px;
      font-weight: 700;
    }
    .guide-panel summary small {
      color: var(--muted);
      font-size: 12px;
      font-weight: 400;
    }
    .guide-content {
      border-top: 1px solid var(--line);
      padding: 16px;
    }
    .readme-content {
      max-height: 520px;
      overflow: auto;
      font-size: 14px;
      line-height: 1.55;
    }
    .guide-content h2 {
      margin: 18px 0 8px;
      font-size: 15px;
    }
    .guide-content h1 {
      margin: 0 0 12px;
      font-size: 20px;
    }
    .guide-content p {
      margin: 0 0 10px;
    }
    .guide-content ul,
    .guide-content ol {
      margin: 0 0 12px;
      padding-left: 20px;
      color: var(--muted);
    }
    .guide-content li + li {
      margin-top: 4px;
    }
    .guide-content code {
      background: #eef2f7;
      border-radius: 4px;
      padding: 1px 4px;
      color: var(--text);
    }
    .guide-content pre {
      margin: 0;
      white-space: pre-wrap;
      color: var(--muted);
    }
    label {
      display: block;
      margin: 14px 0 6px;
      font-weight: 700;
      font-size: 13px;
    }
    input, select, textarea, button {
      width: 100%;
      font: inherit;
      border: 1px solid var(--line);
      border-radius: 6px;
      padding: 10px 11px;
      background: #fff;
    }
    textarea {
      min-height: 86px;
      resize: vertical;
      font-family: Consolas, monospace;
      font-size: 13px;
    }
    button {
      cursor: pointer;
      background: var(--accent);
      color: white;
      border-color: var(--accent);
      font-weight: 700;
      margin-top: 10px;
    }
    button:hover { background: var(--accent-dark); }
    button.secondary {
      background: white;
      color: var(--accent);
    }
    button.danger {
      background: white;
      color: var(--danger);
      border-color: var(--danger);
    }
    button.danger:hover { background: #fff1f0; }
    button:disabled {
      opacity: 0.55;
      cursor: not-allowed;
    }
    .dropbox {
      border: 2px dashed #aeb9c7;
      border-radius: 8px;
      background: #fbfcfe;
      padding: 14px;
      color: var(--muted);
    }
    .dropbox strong {
      display: block;
      color: var(--text);
      margin-bottom: 8px;
    }
    .dropbox input {
      background: white;
      cursor: pointer;
    }
    .file-pill {
      border: 1px solid var(--line);
      border-radius: 6px;
      padding: 10px 11px;
      background: #f8fafc;
      color: var(--text);
      word-break: break-word;
      margin-bottom: 8px;
    }
    .status {
      margin-top: 10px;
      color: var(--muted);
      font-size: 13px;
      min-height: 18px;
    }
    .status.error { color: var(--danger); }
    .progress-panel {
      display: none;
      margin-bottom: 12px;
      background: #ffffff;
      border: 1px solid var(--line);
      border-radius: 8px;
      padding: 12px;
    }
    .progress-panel.active {
      display: block;
    }
    .progress-heading {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      align-items: center;
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .progress-list {
      display: grid;
      gap: 10px;
    }
    .progress-row {
      border: 1px solid var(--line);
      border-radius: 6px;
      padding: 10px;
      background: #f8fafc;
    }
    .progress-top {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      font-size: 13px;
      margin-bottom: 8px;
    }
    .progress-track {
      height: 10px;
      background: #e8edf3;
      border-radius: 999px;
      overflow: hidden;
    }
    .progress-fill {
      height: 100%;
      width: 0%;
      background: var(--accent);
    }
    .progress-meta {
      margin-top: 8px;
      color: var(--muted);
      font-size: 12px;
      line-height: 1.4;
    }
    .blueprint-result {
      display: none;
      margin-bottom: 12px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #f8fafc;
      padding: 12px;
      font-size: 13px;
    }
    .blueprint-result.active {
      display: block;
    }
    .download-link {
      display: inline-block;
      color: white;
      background: var(--accent);
      border-radius: 6px;
      padding: 9px 11px;
      text-decoration: none;
      font-weight: 700;
      margin-top: 8px;
    }
    .download-link:hover {
      background: var(--accent-dark);
    }
    .raw-logs {
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #ffffff;
      padding: 10px;
    }
    .raw-logs summary {
      cursor: pointer;
      font-size: 13px;
      font-weight: 700;
    }
    .output-block {
      margin-bottom: 14px;
    }
    .output-block h2 {
      margin-bottom: 10px;
    }
    .log-screen {
      height: 420px;
      margin-top: 10px;
      overflow: auto;
      background: #0f172a;
      color: #dbeafe;
      border-radius: 8px;
      padding: 14px;
      white-space: pre-wrap;
      font-family: Consolas, monospace;
      font-size: 13px;
      line-height: 1.45;
    }
    hr {
      border: 0;
      border-top: 1px solid var(--line);
      margin: 18px 0;
    }
    @media (max-width: 900px) {
      main {
        grid-template-columns: 1fr;
      }
      .guide-panel summary {
        align-items: flex-start;
        flex-direction: column;
      }
    }