/* ==========================================
   Tutorials & Resources Hub 样式（优化间距）
   ========================================== */

/* 容器布局 */
.container.tutorials-resources-hub {
    max-width: 1140px;
    width: 100%;
    margin: 0 auto;
    padding: 30px 15px;
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

/* 左侧主内容 */
.tutorials-resources-content {
    flex: 7;
}

/* ==========================================
   Tutorials Section
   ========================================== */
.tutorial-series {
    margin-bottom: 40px; /* 略微减少底部间距 */
    background: #fff;
    border-radius: 10px;
    padding: 15px 20px; /* 减少顶部/底部内边距 */
    box-shadow: 0 6px 18px rgba(0,0,0,0.08);
}

.tutorial-series-title {
    font-size: 22px;
    color: #333;
    margin-bottom: 15px; /* 减小标题下方间距 */
    position: relative;
    padding-left: 15px;
}

.tutorial-series-title::before {
    content: "|";
    position: absolute;
    left: 0;
    top: 0;
    font-size: 22px;
    color: #E64A19;
    line-height: 1;
}

.tutorial-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tutorial-item {
    display: flex;
    gap: 15px; /* 缩小图片和文字间距 */
    margin-bottom: 15px; /* 缩小卡片间距 */
    flex-wrap: wrap;
    border-bottom: 1px solid #ddd;
    padding-bottom: 10px; /* 缩小底部内边距 */
}

.tutorial-item:last-child {
    border-bottom: none;
}

.tutorial-link {
    display: flex;
    gap: 12px; /* 缩小链接内间距 */
    width: 100%;
    text-decoration: none;
    color: inherit;
}

.tutorial-link .thumb {
    flex: 0 0 140px; /* 缩小图片宽度 */
    max-width: 140px;
    overflow: hidden;
    border-radius: 8px;
}

.tutorial-link .thumb img {
    width: 100%;
    height: auto;
    display: block;
}

.tutorial-info {
    flex: 1 1 0;
}

.tutorial-info h4 {
    font-size: 16px;
    margin: 0 0 5px 0; /* 缩小标题与文字间距 */
    color: #333;
}

.tutorial-info p {
    font-size: 14px;
    line-height: 1.5;
    color: #555;
    margin: 0 0 5px 0; /* 缩小文字与 Post Meta 间距 */
}

/* Post Meta */
.tutorial-post-meta {
    font-size: 12px;
    color: #888;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.tutorial-post-meta span {
    display: flex;
    align-items: center;
}

.tutorial-post-meta i {
    margin-right: 4px;
    color: #E64A19;
}

/* ==========================================
   Resources Section
   ========================================== */
.resource-block {
    margin-bottom: 40px; /* 缩小底部间距 */
    background: #fff;
    border-radius: 10px;
    padding: 15px 20px;
    box-shadow: 0 6px 18px rgba(0,0,0,0.08);
}

.resource-title {
    font-size: 22px;
    color: #333;
    margin-bottom: 15px; /* 缩小标题下方间距 */
    position: relative;
    padding-left: 15px;
}

.resource-title::before {
    content: "|";
    position: absolute;
    left: 0;
    top: 0;
    font-size: 22px;
    color: #E64A19;
}

.resource-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 15px; /* 缩小资源卡片间距 */
}

.resource-card {
    flex: 1 1 calc(33.333% - 15px);
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid #ddd;
    transition: transform 0.3s, box-shadow 0.3s;
}

.resource-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(0,0,0,0.12);
}

.resource-thumb {
    width: 100%;
    height: auto;
    overflow: hidden;
}

.resource-thumb img {
    width: 100%;
    height: auto;
    display: block;
}

.resource-body {
    padding: 10px; /* 缩小卡片内边距 */
}

.resource-body h4 {
    font-size: 15px;
    margin: 0 0 4px 0; /* 缩小标题与文字间距 */
    color: #333;
}

.resource-body p {
    font-size: 13px;
    color: #555;
    margin: 0 0 5px 0;
}

/* Resource Post Meta */
.resource-post-meta {
    font-size: 12px;
    color: #888;
    display: flex;
    gap: 10px;
    margin-bottom: 6px;
    flex-wrap: wrap;
}

.resource-post-meta span {
    display: flex;
    align-items: center;
}

.resource-post-meta i {
    margin-right: 4px;
    color: #E64A19;
}

.view-btn {
    display: inline-block;
    padding: 5px 10px;
    background: #E64A19;
    color: #fff;
    font-size: 12px;
    border-radius: 20px;
    text-align: center;
    cursor: pointer;
    transition: 0.3s;
}

.view-btn:hover {
    background: #c43f16;
}

/* ==========================================
   Show More / Collapse 按钮
   ========================================== */
.article-toggle {
    margin-top: 10px; /* 缩小按钮上方间距 */
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

.article-toggle .btn {
    padding: 8px 22px;
    font-size: 14px;
    font-weight: 600;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: 0.25s;
}

.show-more-btn {
    background: #E64A19;
    color: white;
}

.show-more-btn:hover {
    background: #c43f16;
}

.collapse-btn {
    background: #607d8b;
    color: white;
}

.collapse-btn:hover {
    background: #455a64;
}

.hidden-article {
    display: none !important;
}

/* ==========================================
   无文章提示
   ========================================== */
.no-posts {
    font-size: 14px;
    color: #999;
    text-align: center;
    padding: 10px 0;
    border: 1px dashed #ccc;
    border-radius: 5px;
}

/* ==========================================
   响应式布局
   ========================================== */
@media (max-width: 992px) {
    .container.tutorials-resources-hub {
        flex-direction: column;
    }

    .tutorials-resources-content {
        flex: 1;
    }

    .tutorial-item {
        flex-direction: column;
        gap: 10px;
    }

    .tutorial-link .thumb,
    .resource-thumb {
        flex: 1 0 100%;
        max-width: 100%;
    }

    .resource-card {
        flex: 1 1 calc(50% - 10px);
    }
}

@media (max-width: 768px) {
    .tutorial-series-title,
    .resource-title {
        font-size: 20px;
    }

    .tutorial-info h4,
    .resource-body h4 {
        font-size: 15px;
    }

    .tutorial-info p,
    .resource-body p {
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .resource-card {
        flex: 1 1 100%;
    }

    .tutorial-post-meta,
    .resource-post-meta {
        font-size: 11px;
    }

    .tutorial-info h4,
    .resource-body h4 {
        font-size: 14px;
    }
}