/* 资料下载页面样式 */

.downloads-section {
    padding: 6rem 0 5rem;
    background: linear-gradient(180deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
    min-height: calc(100vh - 200px);
    position: relative;
    z-index: 1;
}

.downloads-intro {
    text-align: center;
    color: var(--text-on-dark-light);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 0.75rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.downloads-updating {
    text-align: center;
    color: var(--primary-color);
    font-size: 1rem;
    line-height: 1.6;
    margin: 0 0 0.35rem;
}

.downloads-last-updated {
    width: fit-content;
    max-width: calc(100% - 2rem);
    margin: 0 auto 1rem;
    padding: 0.55rem 1.5rem;
    text-align: center;
    font-size: 1.08rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    line-height: 1.5;
    color: var(--primary-color);
    background: rgba(0, 200, 83, 0.14);
    border: 1px solid rgba(0, 200, 83, 0.5);
    border-radius: 999px;
    box-shadow: 0 0 22px rgba(0, 200, 83, 0.18);
}

.downloads-qr-strip {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: flex-start;
    gap: 2rem;
    margin: 0 0 2.5rem;
}

.downloads-qr-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 220px;
}

.downloads-qr-title {
    margin: 0 0 0.25rem;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--primary-color);
    text-align: center;
}

.downloads-qr-hint {
    margin: 0 0 0.75rem;
    font-size: 0.85rem;
    color: var(--text-on-dark-light);
    text-align: center;
    line-height: 1.4;
}

.downloads-qr-frame {
    display: flex;
    justify-content: center;
    align-items: center;
}

.downloads-qr-img {
    width: 168px;
    height: 168px;
    object-fit: contain;
    border-radius: 12px;
    border: 2px solid rgba(0, 200, 83, 0.3);
    padding: 8px;
    background-color: var(--white);
    box-shadow: var(--shadow), var(--shadow-glow);
    transition: transform 0.3s ease, box-shadow 0.3s ease, opacity 0.35s ease;
    opacity: 1;
}

.downloads-qr-img:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg), 0 0 25px rgba(0, 200, 83, 0.4);
    border-color: rgba(0, 200, 83, 0.5);
}

.downloads-table-container {
    overflow-x: auto;
    margin-top: 2rem;
    background-color: var(--bg-card);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid rgba(0, 200, 83, 0.2);
}

.downloads-qr-strip + .downloads-table-container {
    margin-top: 0;
}

.downloads-table {
    width: 100%;
    border-collapse: collapse;
    color: var(--text-on-dark);
}

.downloads-table thead {
    background-color: var(--bg-card-light);
}

.downloads-table th {
    padding: 1.2rem 1rem;
    text-align: center;
    font-weight: 600;
    color: var(--primary-color);
    border-bottom: 2px solid rgba(0, 200, 83, 0.3);
    border-right: 1px solid rgba(0, 200, 83, 0.2);
    font-size: 1.1rem;
}

.downloads-table th:last-child {
    border-right: none;
}

.downloads-table td {
    padding: 1.2rem 1rem;
    border-bottom: 1px solid rgba(0, 200, 83, 0.15);
    border-right: 1px solid rgba(0, 200, 83, 0.15);
    vertical-align: middle;
}

.downloads-table td:last-child {
    border-right: none;
}

.downloads-table tbody tr {
    transition: background-color 0.3s ease;
}

/* 大分类整行背景：A/B/C/D 相互区分明显，相邻分类对比强烈 */
.downloads-table tbody tr.category-a {
    background-color: rgba(0, 180, 90, 0.22);
}

.downloads-table tbody tr.category-a:hover {
    background-color: rgba(0, 180, 90, 0.28);
}

.downloads-table tbody tr.category-b {
    background-color: rgba(30, 100, 220, 0.22);
}

.downloads-table tbody tr.category-b:hover {
    background-color: rgba(30, 100, 220, 0.28);
}

.downloads-table tbody tr.category-c {
    background-color: rgba(160, 60, 200, 0.22);
}

.downloads-table tbody tr.category-c:hover {
    background-color: rgba(160, 60, 200, 0.28);
}

.downloads-table tbody tr.category-d {
    background-color: rgba(220, 120, 40, 0.22);
}

.downloads-table tbody tr.category-d:hover {
    background-color: rgba(220, 120, 40, 0.28);
}

/* 列宽设置 */
.col-category {
    width: 180px;
    font-weight: 600;
    color: var(--primary-color);
    text-align: center;
    vertical-align: middle;
    background-color: rgba(0, 200, 83, 0.08);
    border-right: 2px solid rgba(0, 200, 83, 0.3) !important;
}

/* 不同分类的分类列背景（与整行色系一致、略深） */
.col-category.category-a {
    background-color: rgba(0, 160, 70, 0.35) !important;
    border-right-color: rgba(0, 180, 90, 0.5) !important;
}

.col-category.category-b {
    background-color: rgba(20, 80, 200, 0.35) !important;
    border-right-color: rgba(30, 100, 220, 0.5) !important;
}

.col-category.category-c {
    background-color: rgba(140, 50, 180, 0.35) !important;
    border-right-color: rgba(160, 60, 200, 0.5) !important;
}

.col-category.category-d {
    background-color: rgba(200, 100, 30, 0.35) !important;
    border-right-color: rgba(220, 120, 40, 0.5) !important;
}

.col-number {
    width: 70px;
    text-align: center;
    font-weight: 600;
    color: var(--primary-light);
    vertical-align: middle;
    font-size: 1rem;
}

/* 序号列继承行背景，不再单独设色以保持大分类块统一 */
.col-number.category-a { background-color: transparent; }
.col-number.category-b { background-color: transparent; }
.col-number.category-c { background-color: transparent; }
.col-number.category-d { background-color: transparent; }

.col-summary {
    min-width: 400px;
}

.col-download {
    width: 180px;
    text-align: center;
}

/* 分类单元格 */
.category-cell {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 0.5px;
}

/* 资料摘要内容 */
.summary-content {
    padding: 0.5rem 0;
}

.summary-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-on-dark);
    margin-bottom: 0.6rem;
    line-height: 1.5;
}

.summary-title .title-label {
    font-weight: 700;
    color: var(--primary-color);
    margin-right: 0.3rem;
}

/* 摘要描述容器 */
.summary-description-container {
    position: relative;
}

.summary-description {
    font-size: 0.92rem;
    color: var(--text-on-dark-light);
    line-height: 1.7;
    transition: max-height 0.3s ease;
}

.summary-description .desc-label {
    font-weight: 600;
    color: var(--text-on-dark);
    margin-right: 0.3rem;
}

/* 摘要折叠状态 - 只显示3行 */
.summary-description.summary-collapsed {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    word-break: break-word;
}

/* 摘要展开状态 - 显示全部 */
.summary-description.summary-expanded {
    display: block;
    -webkit-line-clamp: unset;
    line-clamp: unset;
    overflow: visible;
}

/* 展开/折叠按钮 */
.summary-expand-btn {
    margin-top: 0.5rem;
    padding: 0.3rem 0.8rem;
    background-color: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-block;
}

.summary-expand-btn:hover {
    background-color: var(--primary-color);
    color: var(--white);
    box-shadow: 0 2px 4px rgba(0, 200, 83, 0.3);
}

/* 下载按钮容器 */
.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    align-items: center;
}

/* 下载按钮样式 */
.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.55rem 0.9rem;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s ease;
    white-space: nowrap;
    min-width: 110px;
}

.download-btn .btn-icon {
    font-size: 0.85rem;
}

/* 详情介绍按钮 */
.detail-btn {
    background-color: transparent;
    border: 1.5px solid var(--primary-color);
    color: var(--primary-color);
}

.detail-btn:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

/* 资料下载按钮 */
.download-link-btn {
    background-color: var(--primary-color);
    border: 1.5px solid var(--primary-color);
    color: var(--white);
}

.download-link-btn:hover {
    background-color: var(--primary-light);
    border-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

/* 每个大分类下所有子项放在同一可滚动区域；超过三项时出现滚动条，整块一起滚动 */
.downloads-scroll-cell {
    padding: 0 !important;
    vertical-align: top;
}

.downloads-scroll-wrap {
    overflow-x: hidden;
    padding: 0.5rem 0;
    margin: 0 0.5rem;
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.15);
    min-height: 280px;
}

/* 仅当该分类子项超过 3 项时：限制高度并出现滚动条，所有子项一起滚动；大分类行高度为原 2 倍（560px） */
.downloads-scroll-wrap.downloads-scroll-wrap-has-scroll {
    max-height: 560px;
    min-height: 560px;
    overflow-y: auto;
}

.downloads-scroll-wrap::-webkit-scrollbar {
    width: 8px;
}

.downloads-scroll-wrap::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.06);
    border-radius: 4px;
}

.downloads-scroll-wrap::-webkit-scrollbar-thumb {
    background: rgba(0, 200, 83, 0.4);
    border-radius: 4px;
}

.downloads-scroll-wrap::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 200, 83, 0.6);
}

.downloads-scroll-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.downloads-scroll-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    border-right: 1px solid rgba(255, 255, 255, 0.06);
}

.downloads-scroll-table td:last-child {
    border-right: none;
}

.downloads-scroll-table tr:last-child td {
    border-bottom: none;
}

.downloads-scroll-table .col-number {
    width: 70px;
    text-align: center;
    font-weight: 600;
}

.downloads-scroll-table .col-summary {
    min-width: 200px;
}

.downloads-scroll-table .col-download {
    width: 160px;
    text-align: center;
}

.downloads-scroll-more-hint {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
    color: var(--text-on-dark-light);
    text-align: center;
    margin-top: 0.25rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .col-category {
        width: 150px;
    }

    .col-summary {
        min-width: 300px;
    }

    .col-download {
        width: 150px;
    }

    .download-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
        min-width: 100px;
    }
}

@media (max-width: 768px) {
    .downloads-table-container {
        padding: 1rem;
    }

    .downloads-table {
        font-size: 0.9rem;
    }

    .downloads-table th,
    .downloads-table td {
        padding: 1rem 0.6rem;
    }

    .col-category {
        width: 120px;
        font-size: 0.95rem;
    }

    .col-number {
        width: 55px;
        font-size: 0.9rem;
    }

    .col-summary {
        min-width: 250px;
    }

    .col-download {
        width: 130px;
    }

    .summary-title {
        font-size: 0.95rem;
    }

    .summary-description {
        font-size: 0.85rem;
    }

    .download-buttons {
        gap: 0.5rem;
    }

    .download-btn {
        padding: 0.45rem 0.6rem;
        font-size: 0.75rem;
        min-width: 90px;
    }
}

@media (max-width: 480px) {
    .downloads-section {
        padding: 5rem 0 3rem;
    }

    .downloads-intro {
        font-size: 1rem;
        padding: 0 1rem;
    }

    .downloads-table-container {
        padding: 0.5rem;
        border-radius: 8px;
    }

    .downloads-table {
        font-size: 0.85rem;
    }

    .downloads-table th,
    .downloads-table td {
        padding: 0.8rem 0.4rem;
    }

    .col-category {
        width: 90px;
        font-size: 0.85rem;
    }

    .col-number {
        width: 45px;
        font-size: 0.8rem;
    }

    .col-summary {
        min-width: 180px;
    }

    .col-download {
        width: 100px;
    }

    .summary-title {
        font-size: 0.88rem;
    }

    .summary-title .title-label {
        display: block;
        margin-bottom: 0.2rem;
    }

    .summary-description {
        font-size: 0.8rem;
        line-height: 1.5;
    }

    .summary-description .desc-label {
        display: block;
        margin-bottom: 0.2rem;
    }

    .summary-expand-btn {
        padding: 0.25rem 0.6rem;
        font-size: 0.75rem;
    }

    .download-btn {
        padding: 0.4rem 0.5rem;
        font-size: 0.7rem;
        min-width: 80px;
    }

    .download-btn .btn-icon {
        font-size: 0.75rem;
    }
}