/* desktop-windows · 复古桌面 —— 斜面灰窗口 + 深蓝标题栏贯穿全站，分类即文件夹 */
:root {
    --dw-desk: #2f5f8f;
    --dw-chrome: #d4d0c8;
    --dw-light: #ffffff;
    --dw-mid: #808080;
    --dw-dark: #404040;
    --dw-title: #0a246a;
    --dw-title-2: #3a6ea5;
    --dw-paper: #ffffff;
    --dw-ink: #111111;
    --dw-soft: #3d3d3d;
    --dw-select: #ffd23f;
    --dw-pixel: Silkscreen, "Courier New", monospace;
    --dw-body: "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", sans-serif;
    --dw-raised: inset -1px -1px 0 var(--dw-dark), inset 1px 1px 0 var(--dw-light), inset -2px -2px 0 var(--dw-mid), inset 2px 2px 0 #e9e7e2;
    --dw-sunken: inset 1px 1px 0 var(--dw-mid), inset -1px -1px 0 var(--dw-light), inset 2px 2px 0 var(--dw-dark), inset -2px -2px 0 #e9e7e2;
    --pagination-accent: #0a246a;
}

body.theme-desktop { margin: 0; background: var(--dw-desk); color: var(--dw-ink); font-family: var(--dw-body); font-size: 16px; }
:where(.theme-desktop) a { color: inherit; text-decoration: none; }
.theme-desktop :focus-visible { outline: 2px dotted var(--dw-ink); outline-offset: 2px; }
.dw-skip { position: absolute; left: -9999px; }
.dw-skip:focus { left: 12px; top: 12px; z-index: 50; padding: 10px 14px; background: var(--dw-chrome); box-shadow: var(--dw-raised); }
.dw-main:focus { outline: none; }

/* ---------- 窗口（全站母题） ---------- */
.dw-window { display: flex; flex-direction: column; padding: 3px; background: var(--dw-chrome); box-shadow: var(--dw-raised), 4px 4px 0 rgba(0, 0, 0, .25); }
.dw-titlebar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    min-height: 28px;
    padding: 3px 4px 3px 8px;
    background: linear-gradient(90deg, var(--dw-title), var(--dw-title-2));
    color: #fff;
}
.dw-title { min-width: 0; font-family: var(--dw-pixel); font-size: .74rem; letter-spacing: .02em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dw-controls { display: flex; gap: 2px; flex: none; }
.dw-controls i { width: 16px; height: 14px; background: var(--dw-chrome); box-shadow: var(--dw-raised); }
.dw-controls i:last-child { margin-left: 2px; background: var(--dw-chrome) linear-gradient(45deg, transparent 44%, var(--dw-ink) 44% 56%, transparent 56%), linear-gradient(-45deg, transparent 44%, var(--dw-ink) 44% 56%, transparent 56%); background-size: 8px 8px; background-position: center; background-repeat: no-repeat; }
.dw-inset { background: var(--dw-paper); box-shadow: var(--dw-sunken); }
.dw-button { display: inline-flex; align-items: center; justify-content: center; min-height: 40px; padding: 6px 16px; background: var(--dw-chrome); box-shadow: var(--dw-raised); font-weight: 700; }
.dw-button:active { box-shadow: var(--dw-sunken); }
.dw-button-default { outline: 1px solid var(--dw-ink); outline-offset: -1px; }
.dw-field { display: inline-flex; align-items: center; min-height: 40px; padding: 4px 12px; background: var(--dw-paper); box-shadow: var(--dw-sunken); font-size: .9rem; }
.dw-statusbar { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 3px; }
.dw-statusbar span { flex: 1; min-width: 120px; padding: 4px 8px; box-shadow: inset 1px 1px 0 var(--dw-mid), inset -1px -1px 0 var(--dw-light); font-size: .82rem; }

/* 文件夹图标：纯 CSS */
.dw-folder { position: relative; display: inline-block; flex: none; width: 48px; height: 36px; margin-top: 6px; background: #f4c542; box-shadow: inset -2px -2px 0 #b8901c; }
.dw-folder::before { content: ""; position: absolute; left: 0; top: -6px; width: 20px; height: 7px; background: #e0ad2b; }
.dw-folder-sm { width: 20px; height: 15px; margin-top: 3px; }
.dw-folder-sm::before { top: -3px; width: 9px; height: 4px; }
.dw-folder-lg { width: 64px; height: 48px; margin-top: 8px; }
.dw-folder-lg::before { top: -8px; width: 26px; height: 9px; }

/* ---------- 任务栏（页眉） ---------- */
.dw-taskbar { background: var(--dw-chrome); box-shadow: inset 0 -1px 0 var(--dw-dark), inset 0 1px 0 var(--dw-light); }
.dw-taskbar-inner { display: flex; align-items: center; gap: 8px; max-width: 1320px; margin: 0 auto; padding: 6px 16px; }
.dw-start { display: inline-flex; align-items: center; gap: 8px; min-height: 40px; padding: 4px 12px 4px 8px; margin-right: 8px; background: var(--dw-chrome); box-shadow: var(--dw-raised); font-weight: 700; min-width: 0; }
.dw-start-logo { display: grid; grid-template-columns: 9px 9px; gap: 2px; transform: skewY(-6deg); }
.dw-start-logo i { width: 9px; height: 9px; background: #e8402a; }
.dw-start-logo i:nth-child(2) { background: #3fa142; }
.dw-start-logo i:nth-child(3) { background: #2a62c9; }
.dw-start-logo i:nth-child(4) { background: #f2c12e; }
.dw-start-name { font-size: 1.05rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dw-tasks { display: flex; gap: 6px; margin-right: auto; }
.dw-task { display: inline-flex; align-items: center; min-height: 40px; min-width: 120px; padding: 4px 12px; background: var(--dw-chrome); box-shadow: var(--dw-raised); font-size: .92rem; }
.dw-task.is-on { box-shadow: var(--dw-sunken); background: repeating-conic-gradient(var(--dw-chrome) 0 25%, #e8e6e1 0 50%) 0 0 / 4px 4px; font-weight: 700; }
.dw-menu-toggle { display: none; color: inherit; }

/* ---------- 桌面版心 ---------- */
.dw-main { min-height: 60vh; padding-bottom: 48px; }
.dw-wrap { max-width: 1320px; margin: 0 auto; padding: 24px 16px 0; }
.dw-desk-label { display: inline-block; margin: 36px 0 16px; padding: 4px 10px; background: var(--dw-title); color: #fff; font-family: var(--dw-pixel); font-weight: 400; font-size: 1rem; }
.dw-empty { padding: 24px; color: var(--dw-ink); background: var(--dw-paper); }
.dw-pager { margin-top: 28px; padding: 8px; background: var(--dw-chrome); box-shadow: var(--dw-raised); }
.dw-pager .nh-pager { margin: 0; }

/* 首页头条窗口 */
.dw-lead-body { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 16px; padding: 12px; }
.dw-lead-image { display: block; padding: 3px; }
.dw-lead-image img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
.dw-lead-text { display: grid; gap: 16px; align-content: center; }
.dw-lead-title { margin: 0; font-size: clamp(1.5rem, 2.6vw, 2.3rem); line-height: 1.18; font-weight: 700; }
.dw-lead-title a:hover { background: var(--dw-title); color: #fff; }
.dw-lead-excerpt { margin: 0; color: var(--dw-soft); font-size: 1.04rem; line-height: 1.65; }
.dw-lead-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

/* 卡片窗口网格 */
.dw-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.dw-grid-row { grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 20px; }
.dw-card-body { display: grid; gap: 10px; flex: 1; align-content: start; padding: 8px 8px 14px; }
.dw-card-image { display: block; padding: 2px; background: var(--dw-paper); box-shadow: var(--dw-sunken); }
.dw-card-image img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 10; object-fit: cover; }
.dw-card-title { padding: 0 4px; font-weight: 700; font-size: 1.05rem; line-height: 1.35; }
.dw-card-body:hover .dw-card-title { background: var(--dw-title); color: #fff; }

/* ---------- 分类页：资源管理器详情视图 ---------- */
.dw-addressbar { display: flex; align-items: center; gap: 8px; padding: 6px 4px; }
.dw-address-label { font-size: .85rem; }
.dw-address { flex: 1; min-width: 0; display: flex; flex-wrap: wrap; gap: 6px; padding: 6px 10px; font-size: .9rem; }
.dw-address a { text-decoration: underline; }
.dw-explorer-head { display: flex; align-items: center; gap: 16px; padding: 12px 8px 16px; }
.dw-explorer-head h1 { margin: 0; font-size: clamp(1.7rem, 3.4vw, 2.6rem); line-height: 1.1; }
.dw-explorer-head p { margin: 6px 0 0; color: var(--dw-soft); line-height: 1.5; }
.dw-explorer-panes { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 4px; }
.dw-tree { padding: 10px; background: var(--dw-paper); box-shadow: var(--dw-sunken); }
.dw-tree-root { margin: 0 0 6px; font-weight: 700; }
.dw-tree ul { margin: 0; padding: 0 0 0 12px; list-style: none; border-left: 1px dotted var(--dw-mid); }
.dw-tree a { display: flex; align-items: center; gap: 8px; min-height: 36px; padding: 0 6px; font-size: .92rem; }
.dw-tree a:hover { text-decoration: underline; }
.dw-tree a.is-on { background: var(--dw-title); color: #fff; }
.dw-details { min-width: 0; }
.dw-details-head { display: grid; grid-template-columns: minmax(0, 1fr) 160px 120px; background: var(--dw-chrome); }
.dw-details-head span { padding: 4px 10px; box-shadow: var(--dw-raised); font-size: .85rem; }
.dw-file { display: grid; grid-template-columns: 120px minmax(0, 1fr) 160px 120px; gap: 0 12px; align-items: start; padding: 10px; border-bottom: 1px dotted #b9b9b9; }
.dw-file:hover { background: #e8eefb; }
.dw-file img { display: block; width: 120px; height: auto; aspect-ratio: 16 / 10; object-fit: cover; box-shadow: 0 0 0 1px var(--dw-mid); }
.dw-file-name { display: grid; gap: 6px; }
.dw-file-title { font-weight: 700; font-size: 1.05rem; line-height: 1.35; }
.dw-file:hover .dw-file-title { text-decoration: underline; }
.dw-file-excerpt { color: var(--dw-soft); font-size: .9rem; line-height: 1.5; }
.dw-file-topic, .dw-file-date { font-size: .88rem; color: var(--dw-soft); }
.dw-details .cat-ad-row:has(.ad) { margin: 0; padding: 12px; border-bottom: 1px dotted #b9b9b9; box-shadow: none; }

/* ---------- 话题索引：文件夹桌面 ---------- */
.dw-icons { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; padding: 16px; }
.dw-icons-title { grid-column: 1 / -1; margin: 0 0 4px; font-size: clamp(1.6rem, 3vw, 2.3rem); }
.dw-icon { display: grid; justify-items: center; align-content: start; gap: 8px; padding: 14px 10px; text-align: center; border: 1px dotted transparent; }
.dw-icon:hover { border-color: var(--dw-ink); }
.dw-icon:hover .dw-icon-name { background: var(--dw-title); color: #fff; }
.dw-icon-name { padding: 2px 6px; font-weight: 700; font-size: 1.05rem; }
.dw-icon-desc { color: var(--dw-soft); font-size: .88rem; line-height: 1.45; }

/* ---------- 广告壳：凹陷的白色面板，无广告时整块塌陷 ---------- */
.dw-ad:has(.ad) { margin: 24px 0; padding: 6px; background: var(--dw-paper); box-shadow: var(--dw-sunken); }
.dw-ad:has(.ad) .ad { min-height: 250px; margin: 0 !important; }
.dw-explorer > .dw-ad:has(.ad) { margin: 12px 4px 24px; }

/* ---------- 页脚 ---------- */
.dw-footer { max-width: 1320px; margin: 0 auto; padding: 16px 16px 80px; }
.dw-footer-body { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 16px; align-items: center; padding: 16px 12px; }
.dw-footer-about { margin: 0; line-height: 1.5; }
.dw-footer-links { display: flex; flex-wrap: wrap; gap: 8px; }
.dw-footer-links .dw-button { min-height: 44px; }

/* ---------- 共享页面调色：/menu、/search、静态页、404 放进白色面板 ---------- */
.theme-desktop .site-menu, .theme-desktop .site-search, .theme-desktop .static-page, .theme-desktop .theme-error {
    margin-top: 24px;
    background: var(--dw-paper);
    box-shadow: var(--dw-sunken), 4px 4px 0 rgba(0, 0, 0, .25);
    --menu-accent: var(--dw-title);
}

/* ---------- 断点 ---------- */
@media (min-width: 1600px) {
    .dw-wrap, .dw-taskbar-inner, .dw-footer { max-width: 1520px; }
    .dw-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (max-width: 1023px) {
    .dw-task { min-width: 0; }
    .dw-lead-body { grid-template-columns: minmax(0, 1fr); }
    .dw-grid-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .dw-grid-row .dw-card:first-child { grid-column: 1 / -1; }
    .dw-explorer-panes { grid-template-columns: minmax(0, 1fr); }
    .dw-details-head { grid-template-columns: minmax(0, 1fr) 120px; }
    .dw-details-head span:nth-child(2) { display: none; }
    .dw-file { grid-template-columns: 120px minmax(0, 1fr) 120px; }
    .dw-file-topic { display: none; }
    .dw-footer-body { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 767px) {
    .dw-taskbar-inner { min-height: 52px; padding: 4px 8px; gap: 6px; }
    .dw-start { margin-right: auto; min-height: 40px; }
    .dw-menu-toggle { display: inline-grid; place-items: center; width: 44px; height: 44px; background: var(--dw-chrome); box-shadow: var(--dw-raised); }
    .dw-wrap { padding: 12px 8px 0; }
    .dw-lead-body { padding: 8px; gap: 12px; }
    .dw-lead-title { font-size: 1.4rem; }
    .dw-lead-excerpt { font-size: 1rem; }
    .dw-grid, .dw-grid-row { grid-template-columns: minmax(0, 1fr); gap: 14px; }
    .dw-explorer-head { padding: 8px 4px 12px; }
    .dw-explorer-head .dw-folder { display: none; }
    .dw-details-head { display: none; }
    .dw-file { grid-template-columns: 104px minmax(0, 1fr); gap: 4px 10px; padding: 10px 8px; }
    .dw-file img { width: 104px; }
    .dw-file-excerpt { display: none; }
    .dw-file-date { grid-column: 2; }
    .dw-icons { grid-template-columns: repeat(2, minmax(0, 1fr)); padding: 10px; }
    .dw-icon-desc { display: none; }
    .dw-statusbar span:nth-child(2) { display: none; }
}

/* 移动端：任务栏按钮与文件夹树只在桌面出现，分类入口统一走 /menu */
@media (max-width: 767px) {
    .dw-tasks, .dw-tree { display: none; }
}