/* 资料文库详情：PC 右侧附件栏，平板和手机采用纵向布局。 */
.ui-site .library-detail {
    --library-detail-primary: #1677FF;
    --library-detail-heading: #1F2A37;
    --library-detail-muted: #6B7280;
    --library-detail-border: #E5EAF1;
    padding: 24px 0 48px;
    color: var(--library-detail-heading);
    background: #F5F8FC;
    text-transform: none;
}
.ui-site .library-detail-container { display: grid; gap: 18px; max-width: 1360px; }
.ui-site .library-detail-breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 9px; min-width: 0; color: var(--library-detail-muted); font-size: 14px; line-height: 1.8; }
.ui-site .library-detail-breadcrumb a:hover { color: var(--library-detail-primary); }
.ui-site .library-detail-current { overflow-wrap: anywhere; }
.ui-site .library-detail-layout { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 3fr); align-items: start; gap: 20px; }
.ui-site .library-detail-card { min-width: 0; padding: 26px; background: #FFFFFF; border: 1px solid var(--library-detail-border); border-radius: 12px; box-shadow: 0 3px 16px rgba(31, 42, 55, .025); }
.ui-site .library-detail-overview { padding-bottom: 24px; border-bottom: 1px solid var(--library-detail-border); }
.ui-site .library-detail-title-row h1 { margin: 0; color: var(--library-detail-heading); font-size: 28px; font-weight: 700; line-height: 1.45; overflow-wrap: anywhere; }
.ui-site .library-detail-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 24px; margin-top: 16px; color: var(--library-detail-muted); font-size: 14px; }
.ui-site .library-detail-meta > span { display: inline-flex; align-items: center; gap: 7px; }
.ui-site .library-detail-meta svg { flex-shrink: 0; width: 18px; height: 18px; }
.ui-site .library-detail-content-card, .ui-site .library-detail-video-card { margin-top: 24px; min-width: 0; }
.ui-site .library-detail-unlock { margin-top: 20px; }
.ui-site .library-detail-unlock .Unlock { margin: 0; padding: 16px; border-color: var(--library-detail-border); border-radius: 8px; box-shadow: none; }
.ui-site .library-detail-unlock .Unlock dl { margin: 0; }
.ui-site .library-detail-unlock .Unlock dt { padding: 0; font-size: 16px; }
.ui-site .library-detail-unlock .Unlock dd { margin: 12px 0 0; }
.ui-site .library-detail-unlock .UnlockPop { min-height: 44px; border-radius: 8px; }
.ui-site .library-detail-section-heading { display: flex; align-items: center; justify-content: space-between; gap: 8px 12px; margin-bottom: 20px; }
.ui-site .library-detail-section-heading h2 { display: flex; align-items: center; gap: 10px; margin: 0; color: var(--library-detail-heading); font-size: 20px; font-weight: 700; line-height: 1.4; }
.ui-site .library-detail-section-heading h2::before { content: ''; flex: 0 0 4px; width: 4px; height: 21px; background: var(--library-detail-primary); border-radius: 2px; }
.ui-site .library-detail-file-count { flex-shrink: 0; color: var(--library-detail-muted); font-size: 13px; }
.ui-site .library-detail-empty { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; padding: 30px 12px; color: var(--library-detail-muted); text-align: center; }
.ui-site .library-detail-empty--content { min-height: 240px; padding-block: 36px; }
.ui-site .library-detail-empty-icon { width: 78px; height: 78px; color: #CADCF6; }
.ui-site .library-detail-empty h3 { margin: 4px 0 0; color: #64748B; font-size: 18px; font-weight: 600; line-height: 1.5; }
.ui-site .library-detail-empty p { margin: 0; font-size: 14px; line-height: 1.8; }
.ui-site .library-detail-empty--attachments .library-detail-empty-icon { width: 54px; height: 54px; }
.ui-site .library-detail-mobile-direction { display: none; }
.ui-site .library-detail-richtext { min-width: 0; max-width: 100%; overflow-x: auto; padding: 0; border: 0; color: #334155; font-size: 16px; line-height: 1.9; overflow-wrap: anywhere; }
.ui-site .library-detail-richtext > :first-child { margin-top: 0; }
.ui-site .library-detail-richtext > :last-child { margin-bottom: 0; }
.ui-site .library-detail-richtext p { margin: 0 0 16px; }
.ui-site .library-detail-richtext :is(h1,h2,h3,h4,h5,h6) { margin: 24px 0 12px; color: var(--library-detail-heading); line-height: 1.5; }
.ui-site .library-detail-richtext h1 { font-size: 26px; }
.ui-site .library-detail-richtext h2 { font-size: 22px; }
.ui-site .library-detail-richtext h3 { font-size: 19px; }
.ui-site .library-detail-richtext :is(ul,ol) { margin: 0 0 16px; padding-left: 26px; }
.ui-site .library-detail-richtext ul { list-style: disc; }
.ui-site .library-detail-richtext ol { list-style: decimal; }
.ui-site .library-detail-richtext li { margin: 6px 0; }
.ui-site .library-detail-richtext img { display: inline; max-width: 100% !important; height: auto !important; margin: 0; object-fit: contain; vertical-align: middle; }
.ui-site .library-detail-richtext :is(video,iframe,embed,object) { max-width: 100%; }
.ui-site .library-detail-richtext iframe { display: block; width: var(--library-embed-width, 100%); height: auto !important; aspect-ratio: var(--library-embed-ratio, 16 / 9); border: 0; }
.ui-site .library-detail-richtext figure { margin: 16px 0; }
.ui-site .library-detail-richtext figcaption { margin-top: 8px; color: var(--library-detail-muted); font-size: 14px; }
.ui-site .library-detail-richtext a { color: var(--library-detail-primary); text-decoration: underline; text-underline-offset: 3px; }
.ui-site .library-detail-richtext blockquote { margin: 16px 0; padding: 12px 18px; background: #F5F8FC; border-left: 3px solid var(--library-detail-primary); }
.ui-site .library-detail-richtext table { max-width: none; margin: 16px 0; border-collapse: collapse; }
.ui-site .library-detail-richtext :is(th,td) { padding: 10px 14px; border: 1px solid var(--library-detail-border); text-align: left; }
.ui-site .library-detail-richtext th { color: var(--library-detail-heading); background: #F5F8FC; }
.ui-site .library-detail-richtext pre { max-width: 100%; overflow-x: auto; padding: 16px; background: #F5F8FC; border-radius: 6px; white-space: pre; }
.ui-site .library-detail-attachments { padding: 22px 18px; }
.ui-site .library-detail-file-list { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.ui-site .library-detail-file { display: grid; grid-template-columns: 30px minmax(0, 1fr) auto; align-items: center; gap: 10px; min-width: 0; padding: 12px 10px; border: 1px solid var(--library-detail-border); border-radius: 8px; background: linear-gradient(135deg, #FFFFFF, #FAFCFF); }
.ui-site .library-detail-file-icon { position: relative; display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 38px; color: #8297B8; }
.ui-site .library-detail-file-icon svg { width: 30px; height: 38px; }
.ui-site .library-detail-file-icon > span { position: absolute; right: 0; bottom: 5px; left: 0; overflow: hidden; color: #FFFFFF; font-size: 8px; font-weight: 700; text-align: center; line-height: 1.4; }
.ui-site .library-detail-file-icon--pdf { color: #F63745; }
.ui-site .library-detail-file-icon--word { color: #1677FF; }
.ui-site .library-detail-file-icon--excel { color: #05B77C; }
.ui-site .library-detail-file-icon--archive { color: #955BFF; }
.ui-site .library-detail-file-info { min-width: 0; }
.ui-site .library-detail-file-name { margin: 0; color: var(--library-detail-heading); font-size: 13px; font-weight: 600; line-height: 1.6; overflow-wrap: anywhere; }
.ui-site .library-detail-file-permissions { display: flex; align-items: flex-start; gap: 4px; margin-top: 5px; color: #E87900; font-size: 12px; line-height: 1.6; }
.ui-site .library-detail-file-permissions > svg { flex-shrink: 0; width: 12px; height: 12px; margin-top: 3px; }
.ui-site .library-detail-file-permissions p { margin: 0; }
.ui-site .library-detail-file-actions { display: flex; align-items: center; flex-direction: column; gap: 4px; }
.ui-site .library-detail-button { display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; gap: 5px; min-height: 44px; padding: 8px 10px; color: var(--library-detail-primary); background: #F6FAFF; border: 1px solid #ADCFFF; border-radius: 8px; font-family: inherit; font-size: 13px; font-weight: 500; line-height: 1.5; text-decoration: none; cursor: pointer; transition: background-color .15s, border-color .15s; }
.ui-site .library-detail-button svg { flex-shrink: 0; width: 15px; height: 15px; }
.ui-site .library-detail-button:hover { color: #0964DD; background: #EDF4FF; border-color: #1677FF; }
.ui-site .library-detail-preview { display: inline-flex; align-items: center; justify-content: center; gap: 4px; min-height: 30px; color: var(--library-detail-primary); font-size: 12px; line-height: 1.5; white-space: nowrap; }
.ui-site .library-detail-preview svg { width: 14px; height: 14px; }
.ui-site .library-detail-preview:hover { text-decoration: underline; }
.ui-site .library-detail :is(a,button):focus-visible { outline: 3px solid var(--library-detail-primary); outline-offset: 3px; }
.ui-site .library-detail-membership { margin-top: 24px; text-align: center; }
.ui-site .library-detail-upgrade { position: relative; gap: 9px; width: 100%; min-height: 46px; padding: 10px 30px; color: #FFFFFF; background: linear-gradient(110deg, #40B2FF, #1677FF); border: 0; border-radius: 24px; font-size: 16px; font-weight: 600; }
.ui-site .library-detail-upgrade:hover { color: #FFFFFF; background: linear-gradient(110deg, #2199EF, #0964DD); }
.ui-site .library-detail-upgrade .library-detail-crown { width: 22px; height: 22px; color: #FFD45B; }
.ui-site .library-detail-upgrade .library-detail-upgrade-arrow { position: absolute; right: 15px; width: 18px; height: 18px; }
.ui-site .library-detail-membership p { margin: 12px 0 0; color: var(--library-detail-muted); font-size: 12px; line-height: 1.8; }
.ui-site .library-detail-video { min-width: 0; }
.ui-site .library-detail-video video { display: block; width: 100%; max-height: 720px; background: #0B2347; border-radius: 8px; }
.ui-site .library-detail-video .video-locked-placeholder { border-width: 1px; border-radius: 8px; }
.ui-site .library-detail-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@media (min-width: 1200px) {
    .ui-site .library-detail-attachments { position: sticky; top: calc(var(--header-height, 80px) + 20px); }
    .ui-site .library-detail-file-list { max-height: 65vh; overflow-y: auto; scrollbar-width: thin; }
}
@media (max-width: 1199px) {
    .ui-site .library-detail { padding: 22px 0 36px; }
    .ui-site .library-detail-container { gap: 16px; }
    .ui-site .library-detail-layout { grid-template-columns: minmax(0, 1fr); gap: 16px; }
    .ui-site .library-detail-card { padding: 22px; }
    .ui-site .library-detail-title-row h1 { font-size: 25px; }
    .ui-site .library-detail-empty--content { min-height: 210px; padding-block: 28px; }
    .ui-site .library-detail-file { grid-template-columns: 34px minmax(0, 1fr) auto; gap: 12px; padding: 14px; }
    .ui-site .library-detail-file-name { font-size: 14px; }
    .ui-site .library-detail-desktop-direction { display: none; }
    .ui-site .library-detail-mobile-direction { display: inline; }
}
/* 大屏 iPad 横屏仍采用触控设备的上下结构。 */
@media (min-width: 1200px) and (max-width: 1366px) and (hover: none) and (pointer: coarse) {
    .ui-site .library-detail-layout { grid-template-columns: minmax(0, 1fr); }
    .ui-site .library-detail-attachments { position: static; }
    .ui-site .library-detail-file-list { max-height: none; overflow: visible; }
    .ui-site .library-detail-desktop-direction { display: none; }
    .ui-site .library-detail-mobile-direction { display: inline; }
}
@media (max-width: 600px) {
    .ui-site .library-detail { padding: 16px 0 28px; }
    .ui-site .library-detail-container { width: calc(100% - 28px); gap: 12px; }
    .ui-site .library-detail-layout { gap: 12px; }
    .ui-site .library-detail-breadcrumb { gap: 4px 7px; font-size: 12px; }
    .ui-site .library-detail-current, .ui-site .library-detail-current-separator { display: none; }
    .ui-site .library-detail-card { padding: 18px 14px; }
    .ui-site .library-detail-overview { padding-bottom: 18px; }
    .ui-site .library-detail-title-row h1 { font-size: 21px; line-height: 1.5; }
    .ui-site .library-detail-meta { gap: 6px 16px; margin-top: 12px; font-size: 12px; }
    .ui-site .library-detail-meta > span { gap: 5px; }
    .ui-site .library-detail-meta svg { width: 15px; height: 15px; }
    .ui-site .library-detail-content-card, .ui-site .library-detail-video-card { margin-top: 20px; }
    .ui-site .library-detail-section-heading { gap: 8px; margin-bottom: 14px; }
    .ui-site .library-detail-section-heading h2 { gap: 9px; font-size: 18px; }
    .ui-site .library-detail-section-heading h2::before { height: 19px; }
    .ui-site .library-detail-file-count { font-size: 12px; }
    .ui-site .library-detail-empty--content { min-height: 180px; padding: 20px 2px; }
    .ui-site .library-detail-empty-icon { width: 62px; height: 62px; }
    .ui-site .library-detail-empty h3 { font-size: 16px; }
    .ui-site .library-detail-empty p { font-size: 12px; }
    .ui-site .library-detail-richtext { font-size: 15px; line-height: 1.85; }
    .ui-site .library-detail-file { grid-template-columns: 26px minmax(0, 1fr) auto; gap: 8px; padding: 10px 8px; }
    .ui-site .library-detail-file-icon, .ui-site .library-detail-file-icon svg { width: 26px; height: 34px; }
    .ui-site .library-detail-file-name { font-size: 12px; }
    .ui-site .library-detail-file-permissions { font-size: 11px; }
    .ui-site .library-detail-button { padding: 8px; font-size: 12px; }
    .ui-site .library-detail-membership { margin-top: 18px; }
    .ui-site .library-detail-upgrade { font-size: 15px; }
    .ui-site .library-detail-video .video-locked-placeholder { min-height: 200px; }
}
@media (max-width: 359px) {
    .ui-site .library-detail-file { grid-template-columns: 26px minmax(0, 1fr); }
    .ui-site .library-detail-file-actions { grid-column: 1 / -1; flex-direction: row; justify-content: flex-end; }
}
@media print {
    .ui-site .library-detail-layout { grid-template-columns: minmax(0, 1fr); }
    .ui-site .library-detail-attachments { position: static; }
    .ui-site .library-detail-file-list { max-height: none; overflow: visible; }
}