/* 全局样式 - 整体放大 */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: 'Arial', sans-serif;
    }

    /* 基础字号放大，所有元素相对缩放 */
    html {
      font-size: 18px;
    }

    body {
      background-color: #171717;
      display: flex;
      flex-direction: column;
      align-items: center;
      min-height: 100vh;
    }

    #main-display-container {
      width: 100%;
      max-width: 1150px;
      margin: 0 auto;
      position: relative;
    }

    header {
      width: 100%;
      color: rgb(178, 178, 178);
      text-align: center;
    }

    .header-title {
      transform: scaleY(1.1);
      font-size: 3rem;
      font-weight: bold;
      margin-bottom: 2px;
      color: rgb(252, 252, 252);
    }

    .header-subtitle {
      font-size: 1rem;
    }

    .header-disclaimer {
      font-size: 0.6rem;
      color: #6b6b6b;
      padding-bottom: 1px;
    }

    .main-container {
      width: 95%;
      max-width: 1200px;
      min-width: 480px;
      height: auto;
      margin: 25px auto;
      background-color: white;
      border-radius: 25px;
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    .content-area {
      display: flex;
      flex: 1;
      overflow: hidden;
    }

    .search-container {
      padding: 18px 24px;
      border-bottom: 1px solid #eee;
      flex-shrink: 0;
      text-align: center;
    }

    .search-box {
      width: 100%;
      padding: 14px 18px;
      border: 1px solid #686868;
      border-radius: 15px;
      font-size: 1rem;
      outline: none;
      transition: border-color 0.3s ease, box-shadow 0.3s ease;
    }

    .search-box:focus {
      border-color: #3498db;
      box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
    }

    .software-list {
      width: 140px;
      background-color: #f9f9f9;
      overflow-y: auto;
      padding: 15px 0;
      border-right: 1px solid #eee;
      position: relative;
    }

    /* 彩虹跟踪条 - 出现在右侧边框（点击框的右边）五颜六色动态渐变 */
    .rainbow-tracker {
      position: absolute;
      right: 0;
      top: 0;
      width: 5px;
      background: linear-gradient(135deg, #ff4d4d, #ff9a3c, #ffeb3b, #3cff6e, #3c9eff, #9c3cff, #ff4daf);
      background-size: 300% 300%;
      border-radius: 4px 0 0 4px;
      box-shadow: 0 0 5px rgba(255, 80, 120, 0.9);
      transition: top 0.28s cubic-bezier(0.2, 0.9, 0.4, 1.1), height 0.22s ease;
      z-index: 20;
      pointer-events: none;
      animation: rainbowFlow 2.2s ease infinite;
    }

    @keyframes rainbowFlow {
      0% {
        background-position: 0% 50%;
        filter: hue-rotate(0deg) brightness(1);
      }
      50% {
        background-position: 100% 50%;
        filter: hue-rotate(8deg) brightness(1.1);
      }
      100% {
        background-position: 0% 50%;
        filter: hue-rotate(0deg) brightness(1);
      }
    }

    .software-item {
      padding: 12px 18px;
      margin: 0 12px 8px;
      border-radius: 8px;
      cursor: pointer;
      display: flex;
      align-items: center;
      font-size: 0.95rem;
      font-weight: 500;
      transition: background-color 0.2s ease, box-shadow 0.2s ease;
      position: relative;
      z-index: 10;
    }

    .software-item:hover {
      background-color: #f0f0f0;
    }

    .software-item.active {
      background-color: #3498db;
      color: white;
      box-shadow: 0 3px 8px rgba(52, 152, 219, 0.25);
    }

    .software-name {
      white-space: nowrap;
      text-overflow: ellipsis;
    }

    /* 右侧面板 - 彻底隐藏滚动条但保留滚动功能 */
    .versions-panel {
      flex: 1;
      padding: 0;
      position: relative;
      overflow-y: auto;
      scrollbar-width: none;
      -ms-overflow-style: none;
    }

    .versions-panel::-webkit-scrollbar {
      display: none;
      width: 0;
      background: transparent;
    }

    .panel-header {
      display: flex;
      align-items: center;
      padding: 18px 24px;
      border-bottom: 1px solid #eee;
      position: sticky;
      top: 0;
      background-color: white;
      z-index: 1;
    }

    .panel-icon {
      width: 48px;
      height: 48px;
      background-color: #3498db;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: 1.5rem;
      margin-right: 18px;
      flex-shrink: 0;
    }

    .panel-title {
      font-size: 1.4rem;
      font-weight: bold;
    }

    .panel-description {
      color: #777;
      font-size: 0.9rem;
      margin-top: 5px;
    }

    .version-item {
      padding: 15px 24px;
      border-bottom: 1px solid #f0f0f0;
      font-size: 1rem;
      transition: background-color 0.2s ease;
    }

    .version-item:hover {
      background-color: #fafafa;
    }

    .version-info {
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }

    .version-name {
      margin-bottom: 3px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      display: flex;
      align-items: center;
      font-size: 1.05rem;
      font-weight: 500;
    }

    .version-logo {
      width: 32px;
      height: 32px;
      margin-right: 14px;
      background-size: contain;
      background-repeat: no-repeat;
      background-position: center;
      flex-shrink: 0;
      transition: transform 0.2s ease;
    }

    .version-item:hover .version-logo {
      transform: scale(1.05);
    }

    .version-date {
      color: #777;
      font-size: 0.85rem;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      display: flex;
      align-items: center;
    }

    .arrow {
      display: inline-block;
      width: 10px;
      height: 10px;
      border-right: 2px solid #777;
      border-top: 2px solid #777;
      transform: rotate(45deg);
      margin-left: 12px;
      transition: transform 0.3s cubic-bezier(0.2, 0.9, 0.4, 1.1), top 0.2s;
      position: relative;
    }

    .arrow.right {
      transform: rotate(45deg);
    }

    .arrow.down {
      transform: rotate(135deg);
      top: 3px;
    }

    .download-btn,
    .alt-download-btn {
      color: white;
      border: none;
      padding: 8px 16px;
      border-radius: 6px;
      cursor: pointer;
      transition: all 0.2s ease;
      font-size: 0.9rem;
      text-decoration: none;
      display: inline-block;
      box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    }

    .download-btn {
      background-color: #27ae60;
    }

    .alt-download-btn {
      background-color: #3498db;
    }

    .download-btn:hover {
      background-color: #2ecc71;
      transform: translateY(-2px);
      box-shadow: 0 4px 10px rgba(46, 204, 113, 0.25);
    }

    .alt-download-btn:hover {
      background-color: #2980b9;
      transform: translateY(-2px);
      box-shadow: 0 4px 10px rgba(52, 152, 219, 0.25);
    }

    .download-buttons {
      display: flex;
      gap: 8px;
      margin-left: 15px;
      flex-shrink: 0;
    }

    /* 丝滑展开动画 */
    .version-dropdown {
      display: none;
      background-color: white;
      border: none;
      border-radius: 8px;
      box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
      margin-top: 14px;
     /* max-height: 400px;  不在框里显示，要全部展开 */
      overflow-y: auto;
      width: 100%;
      animation: slideFadeIn 0.25s ease-out;
    }

    @keyframes slideFadeIn {
      from {
        opacity: 0;
        transform: translateY(-8px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .version-dropdown.show {
      display: block;
    }

    .version-options-container {
      display: grid;
      grid-template-columns: 1fr;
      gap: 12px;
      padding: 12px;
    }

    @media (min-width: 768px) {
      .version-options-container {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    .version-option {
      min-width: 0;
    }

    .version-option-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
      padding: 12px 16px;
      border-radius: 8px;
      transition: all 0.2s cubic-bezier(0.2, 0.9, 0.4, 1.1);
      border: 1px solid #e0e0e0;
      background-color: #fafafa;
      min-width: 0;
      overflow: hidden;
    }

    .version-option-content:hover {
      background-color: #f0f0f0;
      border-color: #d0d0d0;
      transform: translateY(-2px);
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
    }

    .version-option-name {
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      margin-right: 16px;
      font-size: 0.95rem;
      flex: 1;
      min-width: 0;
    }

    footer {
      width: 100%;
      color: #ababab;
      padding: 25px 0;
      text-align: center;
      margin-top: auto;
    }

    .footer-content {
      max-width: 1200px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .copyright {
      font-size: 0.9rem;
      color: #9b9b9b;
    }

    .software-count {
      padding-bottom: 4px;
    }

    .verification-modal {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: rgba(0, 0, 0, 0.6);
      z-index: 1000;
      justify-content: center;
      align-items: center;
      padding: 20px;
      box-sizing: border-box;
      overflow-y: auto;
      -webkit-overflow-scrolling: touch;
    }

    .modal-content {
      background-color: white;
      padding: 28px;
      border-radius: 16px;
      width: 90%;
      max-width: 550px;
      box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
      position: relative;
      animation: modalFadeIn 0.3s ease;
      margin: auto;
    }

    @keyframes modalFadeIn {
      from {
        opacity: 0;
        transform: scale(0.96);
      }
      to {
        opacity: 1;
        transform: scale(1);
      }
    }

    .close-btn {
      position: absolute;
      top: 18px;
      right: 20px;
      font-size: 28px;
      font-weight: bold;
      cursor: pointer;
      color: #999;
      line-height: 1;
      padding: 5px;
      transition: color 0.2s, transform 0.2s;
    }

    .close-btn:hover {
      color: #333;
      transform: rotate(90deg);
    }

    .modal-title {
      font-size: 1.6rem;
      margin-bottom: 24px;
      color: #333;
      font-weight: bold;
      text-align: center;
    }

    .input-group {
      display: flex;
      margin-bottom: 8px;
      height: 48px;
    }

    .verification-input {
      flex: 1;
      padding: 12px 16px;
      border: 1px solid #ddd;
      border-radius: 8px 0 0 8px;
      font-size: 1rem;
      outline: none;
      transition: border-color 0.3s;
    }

    .verification-input:focus {
      border-color: #3498db;
    }

    .verify-btn {
      padding: 0 24px;
      background-color: #3498db;
      color: white;
      border: none;
      border-radius: 0 8px 8px 0;
      cursor: pointer;
      font-size: 1rem;
      transition: background-color 0.3s, transform 0.1s;
      white-space: nowrap;
    }

    .verify-btn:hover {
      background-color: #2980b9;
    }

    .verify-btn:active {
      transform: scale(0.97);
    }

    .instructions {
      margin-bottom: 20px;
      color: #666;
      font-size: 0.95rem;
      line-height: 1.6;
      text-align: left;
    }

    .instructions-beijing {
      font-weight: normal;
      background-color: #000000;
      color: #ffffff;
      padding: 4px 8px;
      display: inline-block;
      border-radius: 4px;
    }

    .qrcode-container {
      text-align: center;
      margin: 20px 0 10px;
      padding: 8px;
      background-color: #f9f9f9;
      border-radius: 12px;
      transition: transform 0.2s;
    }

    .qrcode-container:hover {
      transform: scale(1.01);
    }

    .qrcode-img {
      max-width: 100%;
      height: auto;
      max-height: 200px;
      display: block;
      margin: 0 auto;
    }

    .error-message {
      color: #ffffff;
      font-size: 0.9rem;
      margin: 0;
      text-align: center;
      height: auto;
      min-height: 24px;
      position: fixed;
      left: 0;
      right: 0;
      background-color: rgb(211, 6, 6);
      padding: 12px;
      z-index: 1001;
      box-shadow: 0 3px 8px rgba(0, 0, 0, 0.15);
      animation: slideDown 0.3s ease-out;
      display: none;
      width: 100%;
      max-width: 360px;
      margin: 0 auto;
      border-radius: 8px;
      box-sizing: border-box;
      transition: top 0.3s ease, opacity 0.3s ease, transform 0.3s ease;
    }

    .error-message.hiding {
      opacity: 0;
      transform: translateY(-20px);
    }

    @keyframes slideDown {
      from {
        transform: translateY(-50px);
        opacity: 0;
      }
      to {
        transform: translateY(0);
        opacity: 1;
      }
    }

    .shake-animation {
      animation: shake 0.5s;
      border-color: #d6160c !important;
    }

    @keyframes shake {
      0%, 100% {
        transform: translateX(0);
      }
      10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
      }
      20%, 40%, 60%, 80% {
        transform: translateX(5px);
      }
    }

    /* 远程协助区样式 - 默认在电脑上显示 */
    .remote-assistance-section {
      padding: 24px;
      display: flex;
      flex-direction: column;
    }

    .remote-assistance-title {
      margin-bottom: 20px;
      color: #333;
      text-align: center;
      font-size: 2rem;
      width: 100%;
    }

    .remote-assistance-grid {
      margin-top: 20px;
      display: flex;
      justify-content: center;
      align-items: stretch;
      flex-wrap: wrap;
      gap: 24px;
      width: 100%;
    }

    .assistance-item {
      width: 280px;
      min-width: 220px;
      flex-shrink: 0;
      text-align: left;
    }

    .assistance-heading {
      color: #444;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      font-size: 1.3rem;
      justify-content: flex-start;
      padding-bottom: 8px;
    }

    .assistance-heading img {
      width: 28px;
      height: 28px;
      margin-right: 10px;
      margin-left: 47px;
    }

    .assistance-list {
      color: #666;
      padding-left: 26px;
      list-style-type: none;
    }

    .assistance-list li {
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 6px;
      margin-left: 27px;
    }

    .assistance-list li img {
      width: 20px;
      height: 20px;
      margin-right: 6px;
    }

    .assistance-list li a {
      color: #181818;
      text-decoration: none;
      transition: color 0.2s;
      font-size: 0.95rem;
      opacity: 0.7; /* 50% 透明度 */
    }

    .assistance-list li a:hover {
      text-decoration: underline !important;
      color: #3498db;
    }

    .assistance-list .backup-link {
      font-size: 0.8rem;
      color: #d7d7d7 !important;  /* 橙色，可改成其他颜色 */
      font-size: 12px;   /* 固定像素 */
    }

    /* 移动端响应式样式 - 手机横竖屏都隐藏远程协助区 */
    @media (max-width: 767px) {
      html {
        font-size: 16px;
      }
      .main-container {
        width: 98%;
        min-width: 320px;
      }
      .header-title {
        font-size: 3.8rem;
      }
      .search-box {
        width: 100%;
        padding: 12px 15px;
        font-size: 1rem;
      }
      .version-option-content {
        flex-direction: column;
        align-items: flex-start;
        padding: 12px;
      }
      .version-option-name {
        white-space: normal;
        margin-bottom: 10px;
        width: 100%;
        margin-right: 0;
      }
      .download-buttons {
        width: 100%;
        justify-content: flex-start;
        margin-left: 0;
        margin-top: 6px;
      }
      .download-btn,
      .alt-download-btn {
        padding: 8px 14px;
        font-size: 0.85rem;
      }
      .version-name {
        flex-direction: row;
        align-items: center;
      }
      .version-logo {
        margin-right: 10px;
        margin-bottom: 0;
      }
      /* 手机端（横竖屏都）隐藏远程协助区 */
      .remote-assistance-section {
        display: none !important;
      }
    }

    /* 平板设备也隐藏远程协助区 */
    @media (min-width: 768px) and (max-width: 1024px) {
      .remote-assistance-section {
        display: none !important;
      }
    }

    .crack-link {
      color: #c6c6c6 !important;
      font-size: 0.85em;
    }

    a[href="#"],
    a[href=""],
    a[href="javascript:void(0)"] {
      cursor: not-allowed !important;
      opacity: 0.6;
      pointer-events: auto !important;
      text-decoration: none;
    }

    /* ========== 优雅悬浮「联系我们」炫彩版 ========== */
    .floating-contact {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      cursor: pointer;
    }

    /* 炫彩渐变按钮 */
    .contact-trigger {
      background: linear-gradient(135deg, #ff4d4d, #ff9a3c, #3ba7ff, #3cff6e, #3c9eff, #9c3cff, #ff4daf);
      background-size: 300% 300%;
      border-radius: 2px;
      padding: 10px 18px;
      display: flex;
      align-items: center;
      gap: 8px;
      border: 1px solid rgba(255, 255, 255, 0.3);
      box-shadow: 0 4px 15px rgba(255, 80, 120, 0.4);
      transition: all 0.25s ease;
      animation: btnRainbow 10s ease infinite;
    }

    @keyframes btnRainbow {
      0% {
        background-position: 0% 50%;
      }
      50% {
        background-position: 100% 50%;
      }
      100% {
        background-position: 0% 50%;
      }
    }

    .contact-trigger:hover {
      transform: translateY(-3px);
      box-shadow: 0 8px 25px rgba(255, 80, 120, 0.6);
      filter: brightness(1.05);
    }

    .contact-icon {
      font-size: 1.2rem;
    }

    .contact-text {
      font-size: 0.85rem;
      font-weight: 500;
      color: white;
    }

    /* 弹出面板 - 四周炫彩灯光 */
    .contact-popup {
      position: absolute;
      bottom: 55px;
      right: 0;
      background: rgba(20, 20, 25, 0.95);
      backdrop-filter: blur(12px);
      border-radius: 2px;
      padding: 14px 18px;
      width: 210px;
      opacity: 0;
      visibility: hidden;
      transform: translateY(10px);
      transition: all 0.2s ease;
      border: 1px solid rgba(255, 255, 255, 0.15);
      /* 四周炫彩光晕 - 彩虹色环绕 */
      box-shadow: 0 0 1px #ff4d4d,
                  0 0 1px #ff9a3c,
                  0 0 1px #ffeb3b,
                  0 0 1px #3cff6e,
                  0 0 1px #3c9eff,
                  0 0 1px #9c3cff;
      animation: glowPulse 1.5s ease-in-out infinite alternate;
      pointer-events: none;
    }

    /* 光晕呼吸动画 - 让灯光忽强忽弱 */
    @keyframes glowPulse {
      0% {
        box-shadow: 0 0 1px #ff4d4d,
                    0 0 1px #ff9a3c,
                    0 0 1px #ffeb3b,
                    0 0 1px #3cff6e,
                    0 0 1px #3c9eff,
                    0 0 1px #9c3cff;
      }
      100% {
        box-shadow: 0 0 1px #ff4d4d,
                    0 0 1px #ff9a3c,
                    0 0 1px #ffeb3b,
                    0 0 1px #3cff6e,
                    0 0 1px #3c9eff,
                    0 0 1px #9c3cff;
      }
    }

    /* 电脑端：鼠标悬停显示 */
    @media (min-width: 768px) {
      .floating-contact:hover .contact-popup {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        pointer-events: auto;
      }
    }

    /* 手机端：默认隐藏，由 JS 控制显示 */
    @media (max-width: 767px) {
      .contact-popup {
        transition: all 0.2s ease;
      }
    }

    .popup-title {
      color: #ccc;
      font-size: 0.7rem;
      letter-spacing: 1px;
      margin-bottom: 12px;
      border-left: 3px solid #3498db;
      padding-left: 8px;
    }

    .contact-link {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #e0e0e0;
      text-decoration: none;
      font-size: 0.85rem;
      padding: 8px 8px;
      border-radius: 12px;
      transition: all 0.2s;
    }

    .contact-link img {
      width: 20px;
      height: 20px;
    }

    .contact-link:hover {
      background: rgba(52, 152, 219, 0.25);
      color: white;
    }

    /* 手机端适配 */
    @media (max-width: 767px) {
      .floating-contact {
        right: 12px;
        bottom: 20px;
      }
      .contact-trigger {
        padding: 8px 14px;
      }
      .contact-text {
        font-size: 0.75rem;
      }
      .contact-popup {
        width: 190px;
        padding: 12px 14px;
        bottom: 53px;
      }
    }