/* 布局基础 */
.rtk-case-center-row {
    display: flex;
    gap: 30px;
    margin-top: 20px;
    align-items: flex-start;
}

.rtk-case-center-left-col {
    width: 280px;
    flex-shrink: 0;
}

.rtk-case-center-right-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.rtk-case-center-page-desc {
    color: #666;
    margin-bottom: 10px;
}

/* 左侧图片 */
.rtk-case-center-left-image {
    border: 1px solid #eee;
    padding: 15px;
    border-radius: 8px;
    background: #fff;
    margin-bottom: 15px;
}

.rtk-case-center-left-image img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 左侧链接容器 */
.rtk-case-center-link-container {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 14px;
    font-weight: 600;
    color: #999;
}

/* 左侧按钮 */
.rtk-case-center-link-btn {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    background: #f8f9fa;
    border-radius: 4px;
    color: #333;
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    transition: 0.2s;
    border-left: 3px solid transparent;
}

.rtk-case-center-link-btn:hover {
    background: #eef2f5;
    border-left-color: var(--appl-primary-color);
    color: var(--appl-primary-color);
}

.rtk-case-center-link-btn i {
    color: var(--appl-primary-color);
    margin-right: 8px;
}

/* 右侧模块 */
.rtk-case-center-feature {
    width: 100%;
}

.rtk-case-center-feature-header {
    display: flex;
    align-items: center;
    color: #000;
    font-size: 18px;
    font-weight: 600;
    border-bottom: 2px solid #eaeaea;
    padding-bottom: 8px;
    margin-bottom: 8px;
    gap: 8px;
}

.rtk-case-center-feature-header i {
    font-size: 18px;
    color: var(--appl-primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 右侧两列列表 */
.rtk-case-center-feature-list {
    column-count: 2;
    column-gap: 30px;
    margin: 0;
    padding-left: 20px;
    font-size: 14px;
    line-height: 1.8;
}

.rtk-case-center-feature-list li {
    break-inside: avoid;
}

.rtk-case-center-feature-title {
    font-weight: 700;
}

.rtk-case-center-inline-link {
    display: inline-flex;
    align-items: center;
    color: var(--appl-primary-color);
    text-decoration: none;
}

/* 相关部分 扩展样式 */
.rtk-case-center-related {
    width: 100%;
}

/* 相关部分：标题 */
.rtk-case-center-related-header {
    display: flex;
    align-items: center;
    color: #000;
    font-size: 18px;
    font-weight: 600;
    border-bottom: 2px solid #eaeaea;
    gap: 8px;
}
/* 相关部分：列表 */
.rtk-case-center-related-list {
    list-style: none;
    margin: 0;
    padding: 0;
    padding-left: 0px !important;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: flex-start;
}
/* 相关部分：列表项 每行3个 */
.rtk-case-center-related-list li {
    width: calc((100% - 24px) / 3); 
    box-sizing: border-box;
}
/* 相关部分：列表项 图片 */
.rtk-case-center-related-img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 6px;
    cursor: pointer;
    transition: 0.2s;
    border: 1px solid #eee;
}
/* 相关部分：列表项 图片悬停 */
.rtk-case-center-related-img:hover {
    opacity: 0.8;
    border-color: var(--appl-primary-color);
}

/* 相关开发板：图片上方叠加文字 */
.rtk-case-center-related-card {
  display: block;
  position: relative;
  text-decoration: none;
}

/* 文字样式：居中悬浮在图片上 */
.rtk-case-center-related-card-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
  color: #fff;         /* 文字颜色 */
  font-size: 22px;     /* 文字大小 */
  font-weight: 700;    /* 文字粗细 */
  text-shadow: 0 2px 6px rgba(0,0,0,0.4); /* 文字阴影，更清晰 */
  pointer-events: none; /* 不影响点击 */
}

/* 相关部分：列表项 图片悬停 文字悬停 */
.rtk-case-center-related-card:hover .rtk-case-center-related-card-text {
  transform: translate(-50%, -50%) scale(1.1);
  transition: 0.2s;
}


/* 延伸阅读容器 */
.rtk-case-center-read-more {
    margin: 60px auto;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
/* 标题 */
.rtk-case-center-read-more-title-wrap {
    margin: 0 0 16px;
    font-size: 20px;
    font-weight: 600;
    color: #333;
    border-left: 4px solid var(--appl-primary-color);
    padding-left: 10px;
}
/* 列表 */
.rtk-case-center-read-more ul {
    list-style: none;
}
/* 列表项 */
.rtk-case-center-read-more li {
    padding: 5px 0;
    font-size: 15px;
    color: #555;
    transition: all 0.2s;
}
.rtk-case-center-read-more a:hover {
    color: var(--appl-primary-color);
}
/* 标签样式 */
.rtk-case-center-read-more .rtk-case-center-tag {
    display: inline-block;
    color: var(--appl-primary-color);
    font-weight: 500;
}
.rtk-case-center-read-more a {
    color: #333;
    text-decoration: none;
}




/* 响应式 */
@media (max-width:768px) {
    .rtk-case-center-row {
        flex-direction: column;
        gap: 20px;
    }

    .rtk-case-center-left-col {
        width: 100%;
    }

    .rtk-case-center-feature-list {
        column-count: 1;
    }

    .rtk-case-center-related-list li {
        width: 100%;
    }
}