.zonkvm-bt .zonk-banner {
padding: 100px 0;
  background-image: url('img/news_bg_bt.jpg'); /* 你的背景图地址 */
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  background-attachment: scroll;
  position: relative;
  height: 400px;
  z-index: 1;
}
.zonkvm-bt .banner-title {
     margin-top:80px;
      font-size: 2.4rem;
      font-weight: 700;
      color: #1f2937;
      margin-bottom: 20px;
}
.zonkvm-bt .banner-desc {
  font-size: 14px;
  line-height: 1.7;
  opacity: 0.95;
}
.zonkvm-bt .free-tag {
  font-size: 16px;
  font-weight: bold;
  color: #ff6600;
}
.zonkvm-bt .btn-outline-lighst{
  font-size: 16px;
  color: #fff;
  background: #20a53a;
}
/* 间btn-outline-lighst距 */
.zonkvm-bt .py-6 {
  padding-top: 80px;
  padding-bottom: 80px;
}

/* 模块标题 */
.zonkvm-bt .section-title {
  font-size: 32px;
  margin-bottom: 10px;
}

/* 工具卡片 */
.zonkvm-bt .tool-card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
  transition: 0.3s;
}
.zonkvm-bt .tool-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

/* 选项卡 */
.zonkvm-bt .zonk-tab-tit .nav-link {
  border-radius: 30px;
  padding: 8px 20px;
  margin: 0 4px;
  color: #555;
}
.zonkvm-bt .zonk-tab-tit .nav-link.active {
  background-color: #007bff;
  color: #fff;
}

/* 命令块 */
.zonkvm-bt .command-block {
  position: relative;
}
.zonkvm-bt .command-block code {
  display: block;
  background: #1e1e1e;
  color: #dcdcaa;
  padding: 12px 15px;
  border-radius: 6px;
  font-family: Consolas, monospace;
  font-size: 13px;
  white-space: pre-wrap;
  word-break: break-all;
}
.zonkvm-bt .copy-btn {
  position: absolute;
  top: 32px;
  right: 10px;
  font-size: 12px;
}

/* 步骤卡片 */
.zonkvm-bt .step-card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
  position: relative;
}
.zonkvm-bt .step-num {
  width: 50px;
  height: 50px;
  background: #007bff;
  color: #fff;
  font-size: 22px;
  font-weight: bold;
  border-radius: 50%;
  line-height: 50px;
  margin: 0 auto 15px;
}