/* 只作用于四六级选择页，其他教材保持现有布局。 */
[data-cet-pagination="true"]{height:100dvh;min-height:0;overflow:hidden}
[data-cet-pagination="true"] .student-course-main{min-height:0;padding-top:14px;padding-bottom:112px}
[data-cet-pagination="true"] .student-course-shell{margin-top:0;padding-top:0}
[data-cet-pagination="true"] .student-course-intro{margin-bottom:12px}
[data-cet-pagination="true"] .student-course-picker{padding:16px}
[data-cet-pagination="true"] .student-course-picker-grid{row-gap:14px}
[data-cet-pagination="true"] .student-course-book{width:88px;gap:5px}
[data-cet-pagination="true"] .student-course-book>button{width:88px;height:108px}
[data-cet-pagination="true"] .student-course-units{padding-top:12px}
[data-cet-pagination="true"] .student-course-unit-card{min-height:62px;padding:9px 12px}
[data-cet-pagination="true"] .student-course-unit-card .text-sm{font-size:12px}
[data-cet-pagination="true"] .cet-unit-pager{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-top:16px;font-size:13px}
[data-cet-pagination="true"] .cet-unit-pager-controls{display:flex;align-items:center;gap:8px}
[data-cet-pagination="true"] .cet-unit-pager button,[data-cet-pagination="true"] .cet-unit-pager select{min-height:36px;border:1px solid currentColor;border-radius:9px;padding:5px 10px;background:transparent;color:inherit;font:inherit;cursor:pointer}
[data-cet-pagination="true"] .cet-unit-pager button:disabled{opacity:.35;cursor:default}
[data-cet-pagination="true"] .cet-unit-pager button:focus-visible,[data-cet-pagination="true"] .cet-unit-pager select:focus-visible{outline:2px solid #10b981;outline-offset:3px}
[data-cet-pagination="true"] .cet-course-actions{position:fixed;z-index:60;left:50%;bottom:14px;transform:translateX(-50%);width:min(calc(100% - 32px),1100px);margin:0;padding:14px 92px 14px 92px;border:1px solid #b5cdc6;border-radius:16px;background:var(--color-bottom-dock-bg,#f1f8f5);color:inherit;box-shadow:0 6px 30px #123a3026;justify-content:space-between}
[data-cet-pagination="true"] .cet-course-actions .student-course-start{min-height:44px}
@media(max-width:640px){
 [data-cet-pagination="true"] .student-course-main{padding:12px 12px 146px}
 [data-cet-pagination="true"] .student-course-picker{padding:12px}
 [data-cet-pagination="true"] .cet-unit-pager{justify-content:center}
 [data-cet-pagination="true"] .cet-course-actions{bottom:52px;width:calc(100% - 24px);padding:10px 12px;gap:8px;justify-content:space-between}
 [data-cet-pagination="true"] .cet-course-actions>div{font-size:11px;max-width:calc(100% - 120px);gap:3px}
}

[data-cet-pagination="true"] .student-course-book>button>.flex{padding:6px}

/* 仅四六级桌面紧凑高度：为第四行保留空间，不改变单元内容与其他教材。 */
@media(min-width:1024px) and (max-height:800px){
 [data-cet-pagination="true"] .student-course-intro{margin-bottom:8px}
 [data-cet-pagination="true"] .student-course-book>button>.flex>span{font-size:10px;line-height:12px}
 [data-cet-pagination="true"] .student-course-book>button>.flex>.text-2xl{font-size:18px;line-height:20px}
 [data-cet-pagination="true"] .student-course-book{width:88px;gap:3px}
 [data-cet-pagination="true"] .student-course-book>button{height:80px}
 [data-cet-pagination="true"] .student-course-book>span{font-size:11px;line-height:15px}
 [data-cet-pagination="true"] .student-course-unit-card{min-height:54px;padding:5px 10px}
 [data-cet-pagination="true"] .student-course-unit-card>.mt-1\.5{margin-top:2px}
 [data-cet-pagination="true"] .student-course-unit-grid{row-gap:8px}
 [data-cet-pagination="true"] .cet-unit-pager{margin-top:6px}
}