/* ==================================================
   DOWNLOAD LIBRARY
   PDF 分类筛选和下载卡片
================================================== */

body .lw-download-library {
    display: block !important;
    width: calc(100% - 40px) !important;
    max-width: 1440px !important;
    margin: 0 auto !important;
    padding: 55px 0 100px !important;
}

/* 分类筛选按钮 */
body .lw-download-filters {
    display: flex !important;
    align-items: center !important;
    flex-wrap: wrap !important;
    gap: 12px !important;

    width: 100% !important;
    margin: 0 0 70px !important;
    padding: 0 0 30px !important;

    border: 0 !important;
    border-bottom: 1px solid #e7edf1 !important;
}

body .lw-download-filter {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;

    width: auto !important;
    min-width: 0 !important;
    min-height: 44px !important;
    margin: 0 !important;
    padding: 10px 24px !important;

    color: #505861 !important;
    background: #f3f7fa !important;

    border: 0 !important;
    border-radius: 999px !important;
    box-shadow: none !important;

    font-family: inherit !important;
    font-size: 15px !important;
    font-weight: 600 !important;
    line-height: 1.2 !important;
    text-transform: none !important;
    letter-spacing: 0 !important;

    cursor: pointer !important;
    opacity: 1 !important;

    transition:
        color 0.2s ease,
        background-color 0.2s ease,
        transform 0.2s ease !important;
}

body .lw-download-filter:hover,
body .lw-download-filter.is-active {
    color: #ffffff !important;
    background: #00613a !important;
}

body .lw-download-filter:hover {
    transform: translateY(-1px);
}

/* 桌面端固定三列，只有一个文件时也不会拉满整行 */
body .lw-download-grid {
    display: grid !important;
    grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
    align-items: stretch !important;
    gap: 28px !important;

    width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
}

/* 下载卡片 */
body .lw-download-card {
    display: flex !important;
    flex-direction: column !important;

    width: 100% !important;
    min-width: 0 !important;
    height: 100% !important;
    margin: 0 !important;
    padding: 0 !important;

    overflow: hidden !important;
    background: #f1f8fd !important;

    border: 1px solid #d6e4ee !important;
    border-radius: 20px !important;
    box-shadow: none !important;

    transition:
        transform 0.25s ease,
        box-shadow 0.25s ease !important;

    cursor: pointer !important;
}

body .lw-download-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 38px rgba(20, 54, 75, 0.1) !important;
}

body .lw-download-card:focus-visible {
    outline: 3px solid rgba(0, 97, 58, 0.35) !important;
    outline-offset: 4px !important;
}

body .lw-download-card[hidden] {
    display: none !important;
}

/* 封面区域 */
body .lw-download-card__media {
    position: relative !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;

    flex: 0 0 auto !important;
    width: 100% !important;
    height: auto !important;
    aspect-ratio: 1.46 / 1 !important;
    margin: 0 !important;
    padding: 0 !important;

    overflow: hidden !important;
    background: #ffffff !important;
}

body .lw-download-card__image,
body .lw-download-card__media img {
    display: block !important;

    width: 100% !important;
    height: 100% !important;
    max-width: none !important;
    max-height: none !important;

    margin: 0 !important;
    padding: 0 !important;

    object-fit: cover !important;
    object-position: center !important;
    border: 0 !important;
    border-radius: 0 !important;
}

body .lw-download-card__placeholder {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;

    width: 86px !important;
    height: 104px !important;

    color: #ffffff !important;
    background: #00613a !important;
    border-radius: 8px !important;

    font-size: 24px !important;
    font-weight: 800 !important;
    line-height: 1 !important;
    letter-spacing: 1px !important;
}

/* 卡片悬停时显示 PDF 预览提示 */
body .lw-download-card__preview-hint {
    position: absolute !important;
    inset: 0 !important;
    z-index: 2 !important;

    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 10px !important;

    color: #ffffff !important;
    background: rgba(0, 63, 39, 0.72) !important;
    font-size: 15px !important;
    font-weight: 700 !important;

    opacity: 0 !important;
    visibility: hidden !important;
    transition: opacity 0.22s ease, visibility 0.22s ease !important;
}

body .lw-download-card:hover .lw-download-card__preview-hint,
body .lw-download-card:focus-visible .lw-download-card__preview-hint {
    opacity: 1 !important;
    visibility: visible !important;
}

body .lw-download-card__preview-icon {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 36px !important;
    height: 36px !important;
    color: #00613a !important;
    background: #ffffff !important;
    border-radius: 999px !important;
    font-size: 24px !important;
    line-height: 1 !important;
}

/* 卡片文字区域 */
body .lw-download-card__body {
    display: flex !important;
    flex: 1 1 auto !important;
    flex-direction: column !important;

    width: 100% !important;
    min-width: 0 !important;
    margin: 0 !important;
    padding: 27px 28px 28px !important;
}

body .lw-download-card__meta {
    display: flex !important;
    align-items: center !important;
    flex-wrap: wrap !important;
    gap: 12px !important;

    margin: 0 0 14px !important;
    padding: 0 !important;
}

body .lw-download-card__category {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;

    min-height: 32px !important;
    margin: 0 !important;
    padding: 5px 14px !important;

    color: #174b34 !important;
    background: #dcefe3 !important;
    border-radius: 999px !important;

    font-size: 14px !important;
    font-weight: 700 !important;
    line-height: 1.2 !important;
}

body .lw-download-card__size {
    margin: 0 !important;
    padding: 0 !important;

    color: #858b92 !important;
    font-size: 14px !important;
    font-weight: 400 !important;
    line-height: 1.3 !important;
}

body .lw-download-card__title {
    display: block !important;

    min-height: 58px !important;
    margin: 0 0 24px !important;
    padding: 0 !important;

    color: #121820 !important;
    font-size: clamp(18px, 1.4vw, 21px) !important;
    font-weight: 700 !important;
    line-height: 1.4 !important;
    text-transform: none !important;
    letter-spacing: -0.2px !important;
}

/* 下载按钮 */
body .lw-download-card__button {
    position: relative !important;
    z-index: 3 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 16px !important;

    width: 100% !important;
    min-height: 53px !important;
    margin: auto 0 0 !important;
    padding: 12px 24px !important;

    color: #ffffff !important;
    background: #00613a !important;

    border: 1px solid #00613a !important;
    border-radius: 999px !important;
    box-shadow: none !important;

    font-size: 16px !important;
    font-weight: 700 !important;
    line-height: 1.2 !important;
    text-align: center !important;
    text-decoration: none !important;
    text-transform: none !important;
    letter-spacing: 0 !important;

    transition:
        background-color 0.2s ease,
        border-color 0.2s ease,
        transform 0.2s ease !important;
}

body .lw-download-card__button:hover {
    color: #ffffff !important;
    background: #004b2d !important;
    border-color: #004b2d !important;
    transform: translateY(-1px);
}

body .lw-download-card__arrow {
    font-size: 21px !important;
    font-weight: 400 !important;
    line-height: 1 !important;
}

body .lw-download-empty {
    width: calc(100% - 40px) !important;
    max-width: 1440px !important;
    margin: 50px auto !important;
    padding: 30px !important;

    color: #5f6972 !important;
    background: #f3f7fa !important;
    border: 1px solid #dbe5ec !important;
    border-radius: 16px !important;
    text-align: center !important;
}

/* ==================================================
   PDF LIGHTBOX
   点击卡片后打开；支持翻页、缩放和下载
================================================== */

body.lw-pdf-lightbox-open {
    overflow: hidden !important;
}

body .lw-pdf-lightbox[hidden] {
    display: none !important;
}

body .lw-pdf-lightbox {
    position: fixed !important;
    top: var(--lw-pdf-header-offset, 0px) !important;
    right: 0 !important;
    bottom: 0 !important;
    left: 0 !important;
    z-index: 999999 !important;

    display: flex !important;
    align-items: stretch !important;
    justify-content: center !important;

    width: 100vw !important;
    height: calc(100vh - var(--lw-pdf-header-offset, 0px)) !important;
    height: calc(100dvh - var(--lw-pdf-header-offset, 0px)) !important;
    margin: 0 !important;
    padding: 12px 24px 24px !important;
}

body .lw-pdf-lightbox__backdrop {
    position: absolute !important;
    inset: 0 !important;
    background: rgba(7, 15, 20, 0.88) !important;
    backdrop-filter: blur(4px) !important;
    cursor: zoom-out !important;
}

body .lw-pdf-lightbox__dialog {
    position: relative !important;
    z-index: 1 !important;

    display: flex !important;
    flex-direction: column !important;

    width: min(1180px, 100%) !important;
    height: 100% !important;
    max-height: none !important;
    margin: 0 !important;
    padding: 0 !important;

    overflow: hidden !important;
    background: #e8edf0 !important;
    border: 1px solid rgba(255, 255, 255, 0.18) !important;
    border-radius: 16px !important;
    box-shadow: 0 28px 90px rgba(0, 0, 0, 0.42) !important;
}

body .lw-pdf-lightbox__toolbar {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    gap: 20px !important;
    flex: 0 0 auto !important;

    min-height: 68px !important;
    margin: 0 !important;
    padding: 12px 16px 12px 22px !important;

    color: #ffffff !important;
    background: #0e1d19 !important;
}

body .lw-pdf-lightbox__title {
    min-width: 0 !important;
    overflow: hidden !important;
    color: #ffffff !important;
    font-size: 16px !important;
    font-weight: 700 !important;
    line-height: 1.3 !important;
    text-overflow: ellipsis !important;
    white-space: nowrap !important;
}

body .lw-pdf-lightbox__controls {
    display: flex !important;
    align-items: center !important;
    justify-content: flex-end !important;
    gap: 8px !important;
    flex: 0 0 auto !important;
}

body .lw-pdf-lightbox__control,
body .lw-pdf-lightbox__close {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;

    width: 40px !important;
    min-width: 40px !important;
    height: 40px !important;
    min-height: 40px !important;
    margin: 0 !important;
    padding: 0 !important;

    color: #ffffff !important;
    background: rgba(255, 255, 255, 0.11) !important;
    border: 1px solid rgba(255, 255, 255, 0.15) !important;
    border-radius: 9px !important;
    box-shadow: none !important;

    font-family: Arial, sans-serif !important;
    font-size: 21px !important;
    font-weight: 400 !important;
    line-height: 1 !important;
    text-transform: none !important;
    cursor: pointer !important;
}

body .lw-pdf-lightbox__control:hover,
body .lw-pdf-lightbox__close:hover {
    color: #ffffff !important;
    background: #00613a !important;
    border-color: #00613a !important;
}

body .lw-pdf-lightbox__control:disabled {
    opacity: 0.35 !important;
    cursor: not-allowed !important;
}

body .lw-pdf-lightbox__pages,
body .lw-pdf-lightbox__zoom {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    min-width: 64px !important;
    height: 40px !important;
    margin: 0 !important;
    color: #ffffff !important;
    font-size: 14px !important;
    font-weight: 600 !important;
    line-height: 1 !important;
    white-space: nowrap !important;
}

body .lw-pdf-lightbox__zoom {
    min-width: 52px !important;
}

body .lw-pdf-lightbox__download {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;

    min-width: 104px !important;
    height: 40px !important;
    margin: 0 4px !important;
    padding: 8px 18px !important;

    color: #ffffff !important;
    background: #00613a !important;
    border: 1px solid #00613a !important;
    border-radius: 9px !important;

    font-size: 14px !important;
    font-weight: 700 !important;
    line-height: 1 !important;
    text-decoration: none !important;
    text-transform: none !important;
}

body .lw-pdf-lightbox__download:hover {
    color: #ffffff !important;
    background: #007d4b !important;
    border-color: #007d4b !important;
}

body .lw-pdf-lightbox__close {
    font-size: 29px !important;
}

body .lw-pdf-lightbox__viewer {
    position: relative !important;
    display: flex !important;
    align-items: flex-start !important;
    justify-content: flex-start !important;
    flex: 1 1 auto !important;

    min-width: 0 !important;
    min-height: 0 !important;
    margin: 0 !important;
    padding: 24px !important;

    overflow: auto !important;
    background: #cbd2d6 !important;
    overscroll-behavior: contain !important;
}

body .lw-pdf-lightbox__canvas {
    display: block !important;
    flex: 0 0 auto !important;
    max-width: none !important;
    max-height: none !important;
    margin: auto !important;
    padding: 0 !important;
    background: #ffffff !important;
    border: 0 !important;
    border-radius: 2px !important;
    box-shadow: 0 10px 34px rgba(0, 0, 0, 0.22) !important;
}

body .lw-pdf-lightbox__canvas[hidden],
body .lw-pdf-lightbox__fallback[hidden],
body .lw-pdf-lightbox__loading[hidden] {
    display: none !important;
}

body .lw-pdf-lightbox__loading {
    position: absolute !important;
    top: 50% !important;
    left: 50% !important;
    z-index: 3 !important;
    transform: translate(-50%, -50%) !important;

    margin: 0 !important;
    padding: 12px 18px !important;
    color: #ffffff !important;
    background: rgba(14, 29, 25, 0.9) !important;
    border-radius: 999px !important;
    font-size: 14px !important;
    font-weight: 600 !important;
    white-space: nowrap !important;
}

body .lw-pdf-lightbox__fallback {
    display: block !important;
    width: 100% !important;
    height: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
    background: #ffffff !important;
    border: 0 !important;
}

/* 平板：两列 */
@media screen and (max-width: 849px) {
    body .lw-download-library {
        width: calc(100% - 32px) !important;
        padding-top: 40px !important;
        padding-bottom: 70px !important;
    }

    body .lw-download-filters {
        margin-bottom: 45px !important;
    }

    body .lw-download-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
        gap: 22px !important;
    }

    body .lw-pdf-lightbox {
        padding: 12px !important;
    }

    body .lw-pdf-lightbox__dialog {
        height: 100% !important;
        border-radius: 12px !important;
    }

    body .lw-pdf-lightbox__toolbar {
        align-items: flex-start !important;
        flex-direction: column !important;
        gap: 9px !important;
        padding: 11px 12px !important;
    }

    body .lw-pdf-lightbox__title {
        width: 100% !important;
        padding: 0 4px !important;
    }

    body .lw-pdf-lightbox__controls {
        width: 100% !important;
        justify-content: flex-start !important;
        overflow-x: auto !important;
        padding-bottom: 2px !important;
    }

    body .lw-pdf-lightbox__viewer {
        padding: 14px !important;
    }
}

/* 手机：一列 */
@media screen and (max-width: 549px) {
    body .lw-download-library {
        width: calc(100% - 30px) !important;
        padding-top: 30px !important;
        padding-bottom: 55px !important;
    }

    body .lw-download-filters {
        gap: 9px !important;
        margin-bottom: 32px !important;
        padding-bottom: 22px !important;
    }

    body .lw-download-filter {
        min-height: 40px !important;
        padding: 9px 17px !important;
        font-size: 14px !important;
    }

    body .lw-download-grid {
        grid-template-columns: minmax(0, 1fr) !important;
        gap: 20px !important;
    }

    body .lw-download-card__body {
        padding: 23px 22px 24px !important;
    }

    body .lw-download-card__title {
        min-height: 0 !important;
        font-size: 18px !important;
    }

    body .lw-download-card__preview-hint {
        top: auto !important;
        right: 12px !important;
        bottom: 12px !important;
        left: auto !important;
        width: auto !important;
        height: auto !important;
        padding: 8px 12px !important;
        background: rgba(0, 63, 39, 0.84) !important;
        border-radius: 999px !important;
        font-size: 12px !important;
        opacity: 1 !important;
        visibility: visible !important;
    }

    body .lw-download-card__preview-icon {
        width: 24px !important;
        height: 24px !important;
        font-size: 17px !important;
    }

    body .lw-pdf-lightbox {
        padding: 0 !important;
    }

    body .lw-pdf-lightbox__dialog {
        width: 100% !important;
        height: 100% !important;
        border: 0 !important;
        border-radius: 0 !important;
    }

    body .lw-pdf-lightbox__toolbar {
        min-height: 0 !important;
    }

    body .lw-pdf-lightbox__control,
    body .lw-pdf-lightbox__close {
        width: 38px !important;
        min-width: 38px !important;
        height: 38px !important;
        min-height: 38px !important;
    }

    body .lw-pdf-lightbox__pages {
        min-width: 56px !important;
    }

    body .lw-pdf-lightbox__zoom {
        display: none !important;
    }

    body .lw-pdf-lightbox__download {
        min-width: 90px !important;
        height: 38px !important;
        padding: 8px 13px !important;
    }

    body .lw-pdf-lightbox__viewer {
        align-items: flex-start !important;
        padding: 10px !important;
    }
}