/* Portrait touch tablets: content-sized tiles, never stretched grid squares. */
@media (orientation: portrait) and (min-width: 600px) and (min-height: 600px) and (pointer: coarse) {
    #blind-doc-folder-list.is-folder-icons {
        display: grid !important;
        grid-template-columns: repeat(5, 96px) !important;
        align-items: flex-start;
        align-content: flex-start;
        justify-content: space-between;
        column-gap: 0 !important;
        row-gap: 8px !important;
    }
    #blind-doc-folder-list.is-folder-icons > .blind-doc-icons-up { grid-column: 1 / -1; }
    #blind-doc-folder-list.is-folder-icons > .blind-doc-folder-row,
    #blind-doc-folder-list.is-folder-icons > .blind-doc-tree-file-row {
        width: 96px !important;
        max-width: 96px !important;
        height: 96px !important;
        min-height: 96px !important;
        max-height: 96px !important;
        aspect-ratio: auto !important;
    }
    #blind-doc-folder-list.is-folder-icons .blind-doc-folder-shell {
        width: 100% !important;
        height: 100% !important;
        padding: 8px !important;
    }
    #blind-doc-folder-list.is-folder-icons > .blind-doc-tree-file-row { padding: 8px !important; }
    #blind-doc-folder-list.is-folder-icons .blind-doc-folder-row .blind-doc-folder,
    #blind-doc-folder-list.is-folder-icons .blind-doc-tree-file {
        width: 100% !important;
        height: 100% !important;
        padding: 0 !important;
        gap: 4px !important;
    }
    #blind-doc-folder-list.is-folder-icons .blind-doc-folder span,
    #blind-doc-folder-list.is-folder-icons .blind-doc-tree-file-name {
        height: auto !important;
        min-height: 0 !important;
        max-height: none !important;
        flex: 0 0 auto !important;
        white-space: normal !important;
        overflow-wrap: anywhere;
    }
    #blind-doc-folder-list.is-folder-icons .blind-doc-folder-row .blind-doc-folder::before,
    #blind-doc-folder-list.is-folder-icons .blind-doc-tree-file-icon {
        width: 34px !important;
        min-width: 34px !important;
        height: 28px !important;
        min-height: 28px !important;
        flex: 0 0 28px !important;
    }
}

/* The fourth document tab belongs only to portrait tablets. Phones retain
   their existing bottom reader navigation, and desktop keeps three tabs. */
body.blind-school-page #blind-doc-reading-tab { display: none; }

body.blind-school-page .blind-ai-assistant[hidden] { display: none !important; }
body.blind-school-page .blind-ai-launcher-dismiss {
    position: absolute;
    top: -8px;
    right: -8px;
    z-index: 2;
    display: grid;
    place-items: center;
    width: 26px;
    height: 26px;
    padding: 0;
    border: 1px solid #d8ad79;
    border-radius: 50%;
    color: #794017;
    background: #fffaf2;
    box-shadow: 0 2px 8px rgba(60, 35, 16, .18);
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
}
body.blind-school-page .blind-ai-assistant.is-open .blind-ai-launcher-dismiss { display: none; }

@media (orientation: portrait) and (min-width: 768px) and (max-width: 1024px) and (pointer: coarse) {
    body.blind-school-page #blind-doc-reading-tab { display: inline-flex; }
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-directory-tabs {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-workspace {
        display: flex;
        flex-direction: column;
        height: max(540px, calc(100dvh - 250px));
        min-height: 0;
        overflow: hidden;
    }
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-sidebar {
        position: static;
        flex: 1 1 auto;
        width: 100%;
        height: 100%;
        min-height: 0;
        max-height: 100%;
        box-sizing: border-box;
        grid-template-rows: auto minmax(0, 1fr);
        overflow: hidden;
    }
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-sidebar > [hidden] { display: none !important; }
    body.blind-school-page:not(.blind-lesson-page) #blind-documents #blind-doc-directory-panel {
        grid-template-rows: max-content max-content minmax(0, 1fr);
        align-content: start;
        align-items: start;
    }
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-folder-list {
        align-content: start;
        grid-auto-rows: max-content;
    }
    body.blind-school-page:not(.blind-lesson-page) #blind-documents #blind-doc-directory-panel,
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-case-panel,
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-chart-panel,
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-outline-panel {
        min-height: 0;
        max-height: 100%;
        overflow: auto;
        -webkit-overflow-scrolling: touch;
    }
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-main,
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-workspace-resizer,
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-workspace-height-resizer {
        display: none;
    }
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-workspace.has-tablet-document .blind-doc-directory-tabs {
        position: fixed;
        z-index: 15001;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        box-sizing: border-box;
        gap: 6px;
        padding: 8px max(12px, env(safe-area-inset-right)) calc(8px + env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
        border: 0;
        border-top: 1px solid #dfc29e;
        border-radius: 0;
        background: #fffaf3;
        box-shadow: 0 -4px 18px rgba(83, 49, 22, 0.08);
    }
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-workspace.has-tablet-document .blind-doc-directory-tabs button {
        min-height: 48px;
        border: 1px solid #d8ad79;
        border-radius: 9px;
        background: white;
        font-size: clamp(15px, 2.1vw, 18px);
    }
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-workspace.has-tablet-document .blind-doc-directory-tabs button.active {
        background: #fff0d9;
        border-color: #bc8651;
    }
    body.blind-school-page.blind-doc-portrait-tabs-open #blind-ai-assistant {
        bottom: calc(80px + env(safe-area-inset-bottom));
    }
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-workspace.has-tablet-document:not(.is-tablet-reading) .blind-doc-sidebar {
        grid-template-rows: minmax(0, 1fr);
    }
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-workspace.has-tablet-document:not(.is-tablet-reading) {
        padding-bottom: calc(76px + env(safe-area-inset-bottom));
    }
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-workspace.is-tablet-reading .blind-doc-sidebar {
        flex: 0 0 0;
        height: 0;
        min-height: 0;
        max-height: 0;
        display: block;
        padding: 0;
        border: 0;
        background: transparent;
        box-shadow: none;
        overflow: visible;
    }
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-workspace.is-tablet-reading .blind-doc-sidebar > :not(.blind-doc-directory-tabs) {
        display: none !important;
    }
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-workspace.is-tablet-reading .blind-doc-main {
        display: grid;
        flex: 1 1 auto;
        height: auto;
        min-height: 0;
        max-height: none;
        overflow: visible;
    }
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-workspace.is-tablet-reading .blind-doc-list {
        display: none;
    }
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-workspace.is-tablet-reading .blind-doc-preview {
        height: auto;
        min-height: 0;
        max-height: none;
        overflow: visible;
    }
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-workspace.is-tablet-reading {
        height: auto;
        min-height: 0;
        max-height: none;
        padding-bottom: calc(86px + env(safe-area-inset-bottom));
        overflow: visible;
    }
    body.blind-school-page.blind-doc-portrait-reading .school-workbench,
    body.blind-school-page.blind-doc-portrait-reading .school-sidebar,
    body.blind-school-page.blind-doc-portrait-reading .school-main,
    body.blind-school-page.blind-doc-portrait-reading #blind-documents.school-content-panel.active {
        position: static;
        height: auto;
        min-height: 0;
        max-height: none;
        overflow: visible;
    }
}

/* Match the first subnav row under 羲黄实战 on portrait iPads. Keep the
   five School destinations in one equal-width row instead of a tall scroller. */
@media (orientation: portrait) and (min-width: 769px) and (max-width: 1024px) and (pointer: coarse) {
    body.blind-school-page:not(.blind-lesson-page) .site-header {
        margin-bottom: 14px !important;
    }
}

@media (orientation: portrait) and (min-width: 600px) and (max-width: 1024px) and (pointer: coarse) {
    body.blind-school-page:not(.blind-lesson-page) .site-header .site-nav {
        overflow: visible !important;
    }

    body.blind-school-page:not(.blind-lesson-page) .school-workbench:not(.sidebar-collapsed) .school-rail.school-rail-mobile-scroll,
    body.blind-school-page:not(.blind-lesson-page) .school-workbench.sidebar-collapsed .school-rail.school-rail-mobile-scroll {
        position: relative !important;
        display: flex !important;
        flex-wrap: nowrap !important;
        align-items: stretch !important;
        gap: 3px !important;
        width: 100% !important;
        min-width: 0 !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        min-height: 62px !important;
        height: 62px !important;
        margin: 0 !important;
        padding: 10px !important;
        overflow: hidden !important;
        border: 1px solid var(--school-line) !important;
        border-radius: 18px !important;
        background: linear-gradient(145deg, #fff, #fffdf8) !important;
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.75) !important;
    }

    body.blind-school-page:not(.blind-lesson-page) .school-workbench .school-rail.school-rail-mobile-scroll::after {
        content: "" !important;
        position: absolute !important;
        inset: 6px !important;
        border: 1px solid rgba(210, 166, 108, 0.58) !important;
        border-radius: 13px !important;
        pointer-events: none !important;
    }

    body.blind-school-page:not(.blind-lesson-page) .school-workbench .school-rail .school-rail-heading,
    body.blind-school-page:not(.blind-lesson-page) .school-workbench .school-rail::before {
        display: none !important;
        content: none !important;
    }

    body.blind-school-page:not(.blind-lesson-page) .school-workbench:not(.sidebar-collapsed) .school-rail.school-rail-mobile-scroll a,
    body.blind-school-page:not(.blind-lesson-page) .school-workbench.sidebar-collapsed .school-rail.school-rail-mobile-scroll a {
        box-sizing: border-box !important;
        display: flex !important;
        flex: 1 1 0 !important;
        align-items: center !important;
        justify-content: center !important;
        width: auto !important;
        min-width: 0 !important;
        max-width: 100% !important;
        min-height: 40px !important;
        height: 40px !important;
        margin: 0 !important;
        padding: 8px 2px !important;
        border: 0 !important;
        border-radius: 10px !important;
        background: transparent !important;
        box-shadow: none !important;
        color: #7a4a22 !important;
        font-size: clamp(13px, 2.3vw, 15px) !important;
        font-weight: 750 !important;
        line-height: 1.2 !important;
        white-space: nowrap !important;
        overflow: hidden !important;
    }

    body.blind-school-page:not(.blind-lesson-page) .school-workbench:not(.sidebar-collapsed) .school-rail.school-rail-mobile-scroll a.active,
    body.blind-school-page:not(.blind-lesson-page) .school-workbench.sidebar-collapsed .school-rail.school-rail-mobile-scroll a.active {
        color: #8b4513 !important;
        border: 0 !important;
        background: linear-gradient(145deg, #fff4df, #ffead0) !important;
        box-shadow: inset 0 0 0 1px #d6a468, 0 4px 12px rgba(139, 69, 19, 0.08) !important;
    }

    body.blind-school-page:not(.blind-lesson-page) .school-workbench:not(.sidebar-collapsed) .school-rail.school-rail-mobile-scroll a.active::after,
    body.blind-school-page:not(.blind-lesson-page) .school-workbench.sidebar-collapsed .school-rail.school-rail-mobile-scroll a.active::after {
        display: none !important;
        content: none !important;
    }
}

/* Course System keeps the desktop information hierarchy on tablets: all five
   learning stages share one row, followed by two-column course cards. */
@media (min-width: 600px) and (max-width: 1366px) and (any-pointer: coarse) {
    body.blind-school-page:not(.blind-lesson-page) #lesson-list [data-course-subtab-panel="course-system"] .course-path-grid {
        grid-template-columns: repeat(5, minmax(0, 1fr));
        overflow: hidden;
    }

    body.blind-school-page:not(.blind-lesson-page) #lesson-list [data-course-subtab-panel="course-system"] .course-path-step {
        min-width: 0;
        min-height: 158px;
        padding: 13px clamp(8px, 1.35vw, 14px);
        overflow-wrap: anywhere;
    }

    body.blind-school-page:not(.blind-lesson-page) #lesson-list [data-course-subtab-panel="course-system"] .course-path-step > strong {
        font-size: clamp(14px, 1.55vw, 17px);
    }

    body.blind-school-page:not(.blind-lesson-page) #lesson-list [data-course-subtab-panel="course-system"] .course-path-step > p {
        font-size: clamp(12px, 1.2vw, 13px);
    }

    body.blind-school-page:not(.blind-lesson-page) #lesson-list [data-course-subtab-panel="course-system"] .course-program-board {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    body.blind-school-page:not(.blind-lesson-page) #lesson-list [data-course-subtab-panel="course-system"] .course-program-card:nth-child(5) {
        grid-column: 1 / -1;
    }

    body.blind-school-page:not(.blind-lesson-page) #lesson-list [data-course-subtab-panel="course-system"] .course-extension-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    body.blind-school-page:not(.blind-lesson-page) #lesson-list [data-course-subtab-panel="course-system"] .course-selection-list article {
        grid-template-columns: minmax(0, 1.1fr) minmax(0, .7fr) minmax(0, 2fr);
    }
}

/* Match 羲黄实战's first row at tablet widths in either orientation. */
@media (min-width: 600px) and (max-width: 1024px),
       (min-width: 1025px) and (max-width: 1366px) and (pointer: coarse) {
    body.blind-school-page:not(.blind-lesson-page) {
        margin: 0 !important;
    }

    body.blind-school-page:not(.blind-lesson-page) .blind-container {
        width: 96% !important;
        max-width: 1180px !important;
        margin-left: auto !important;
        margin-right: auto !important;
        padding-left: 0 !important;
        padding-right: 0 !important;
    }
}

@media (min-width: 600px) and (max-width: 960px) {
    body.blind-school-page:not(.blind-lesson-page) .site-header .site-nav {
        display: flex !important;
        justify-content: space-between !important;
        gap: 2px !important;
        overflow: hidden !important;
        scrollbar-width: auto !important;
    }

    body.blind-school-page:not(.blind-lesson-page) .site-header .site-nav a {
        display: inline-flex !important;
        flex: 1 1 0 !important;
        align-items: center !important;
        justify-content: center !important;
        min-width: 0 !important;
        padding: 7px 4px !important;
        font-size: 12px !important;
        letter-spacing: 0 !important;
        text-align: center !important;
    }
}

@media (min-width: 600px) and (max-width: 768px) {
    body.blind-school-page:not(.blind-lesson-page) .site-header .site-nav {
        gap: 0 !important;
        overflow: visible !important;
    }

    body.blind-school-page:not(.blind-lesson-page) .site-header .site-nav a {
        font-size: clamp(12px, 3.6vw, 14px) !important;
        letter-spacing: 0.01em !important;
    }
}

/* One frame around the School section tabs, with no inset outline. */
@media (orientation: portrait) and (min-width: 600px) and (max-width: 1024px) and (pointer: coarse) {
    body.blind-school-page:not(.blind-lesson-page) .school-workbench .school-rail.school-rail-mobile-scroll::after {
        display: none !important;
        content: none !important;
    }

    /* The document panel supplies the remaining frame. Give pages the width
       previously consumed by the preview frame and nested side gutters. */
    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-workspace.is-tablet-reading {
        padding-left: 0 !important;
        padding-right: 0 !important;
    }

    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-workspace.is-tablet-reading .blind-doc-preview {
        padding: 8px !important;
        border: 0 !important;
        border-radius: 0 !important;
        box-shadow: none !important;
    }

    body.blind-school-page:not(.blind-lesson-page) #blind-documents .blind-doc-workspace.is-tablet-reading .blind-doc-html {
        padding-left: 18px !important;
        padding-right: 18px !important;
    }
}