       <style>

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      background: #f0f4f8;
      color: #333;
      display: flex;
      justify-content: center;
      align-items: start;
      min-height: 100vh;
      padding: 20px;
      padding-top: 40px;
    }

    .container {
      width: 100%;
      max-width: 800px; /* ← 扩大到 800px */
      background: white;
      border-radius: 16px;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
      overflow: hidden;
      padding: 32px;
    }

    h1 {
      text-align: center;
      font-size: 1.6rem;
      font-weight: 700;
      color: #1a1a1a;
      margin-bottom: 24px;
    }

    .upload-area {
      border: 2px dashed #4a90e2;
      border-radius: 12px;
      padding: 40px;
      text-align: center;
      cursor: pointer;
      transition: all 0.3s ease;
      position: relative;
      background: #f9f9fb;
      margin-bottom: 24px;
    }

    .upload-area:hover {
      background: #f0f6ff;
      border-color: #357ae8;
    }

    .upload-area svg {
      width: 50px;
      height: 50px;
      fill: #4a90e2;
      margin-bottom: 12px;
    }

    .upload-area p {
      color: #666;
      font-size: 14px;
      line-height: 1.6;
    }

    .upload-area strong {
      color: #357ae8;
    }

    .notice {
      margin: 24px 0;
      background: #fff8d4;
      border-left: 4px solid #fbbf24;
      padding: 16px;
      border-radius: 8px;
      font-size: 14px;
      color: #4b5563;
    }

    .notice ul {
      list-style-type: disc;
      margin-left: 20px;
      margin-top: 8px;
    }

    /* 结果容器 */
    #result {
      margin-top: 24px;
      font-size: 15px;
    }

    /* 单个结果卡片 */
    .result-card {
      background: white;
      border: 1px solid #e0e0e0;
      border-radius: 12px;
      padding: 24px;
      margin-bottom: 20px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.08);
      position: relative;
      animation: fadeIn 0.3s ease;
      word-wrap: break-word;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(10px); }
      to { opacity: 1; transform: translateY(0); }
    }

    /* 状态条 */
    .status-bar {
      height: 6px;
      border-radius: 3px;
      margin-bottom: 16px;
    }
    .status-valid-bar { background: #10b981; }
    .status-expired-bar { background: #ef4444; }
    .status-revoked-bar { background: #f59e0b; }

    /* 文件名标签 */
    .file-name-tag {
      font-size: 0.9em;
      color: #666;
      background: #f0f0f0;
      padding: 4px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 12px;
    }

    /* 结果项 */
    .result-item {
      display: flex;
      align-items: flex-start;
      margin-bottom: 16px;
      gap: 16px;
    }

    .result-label {
      color: #555;
      font-weight: 600;
      min-width: 100px;
      white-space: nowrap;
      flex-shrink: 0;
      display: flex;
      align-items: center;
    }

    .result-value {
      color: #222;
      word-break: break-all;
      flex: 1;
      line-height: 1.6;
      font-size: 15px;
    }

    .bold-large {
      font-weight: bold;
      font-size: 1.3em;
      color: inherit;
    }

    .status-valid { color: #10b981; }
    .status-expired { color: #ef4444; }
    .status-revoked { color: #f59e0b; }

    .check-time {
      color: #777;
      font-style: italic;
      text-align: right;
      margin-top: 16px;
      font-size: 0.95em;
    }

    /* Password Modal */
    #passwordModal {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.5);
      z-index: 1000;
      justify-content: center;
      align-items: center;
    }

    .modal-content {
      background: white;
      padding: 24px;
      border-radius: 12px;
      width: 320px;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    }

    .modal-title {
      font-size: 16px;
      margin-bottom: 16px;
      text-align: center;
      color: #1a1a1a;
    }

    .input-group {
      margin-bottom: 16px;
      position: relative;
    }

    .input-group input {
      width: 100%;
      padding: 12px;
      border: 1px solid #d1d5da;
      border-radius: 8px;
      font-size: 14px;
    }

    .toggle-password {
      position: absolute;
      right: 10px;
      top: 50%;
      transform: translateY(-50%);
      cursor: pointer;
      color: #666;
      font-size: 18px;
    }

    .modal-buttons {
      display: flex;
      gap: 10px;
    }

    .btn {
      flex: 1;
      padding: 10px;
      border: none;
      border-radius: 6px;
      font-size: 14px;
      cursor: pointer;
    }

    .btn-cancel {
      background: #e5e7eb;
      color: #374151;
    }

    .btn-submit {
      background: #3b82f6;
      color: white;
    }

    .btn:hover {
      opacity: 0.9;
    }

  </style>