.source-paper-stem{display:block;width:auto;max-width:100%;height:auto;background:#fff;padding:14px;margin:22px 0;border:1px solid var(--line);border-radius:10px;box-sizing:content-box}.source-paper-option{display:inline-block;max-width:calc(100% - 36px);height:auto;max-height:160px;width:auto;background:#fff;padding:8px;border-radius:6px;vertical-align:middle;box-sizing:content-box}.cbt-option>span{display:flex;align-items:center;gap:10px;width:100%;min-width:0}.cbt-option .source-paper-option{min-height:20px;image-rendering:auto}.cbt-option .letter{flex-shrink:0}.section-tab:disabled{cursor:not-allowed;opacity:.45}.section-tab.active{opacity:1}.section-save-status{font-size:11px;color:var(--muted)}#total-timer{display:block;margin-top:6px;font-variant-numeric:tabular-nums}.paper-review-options{display:grid;gap:9px;margin:15px 0 22px}.paper-review-options>div{display:flex;align-items:center;gap:12px;border:1px solid var(--line);padding:12px;border-radius:9px}.paper-review-options .key-correct{border-color:#2f9e70;background:var(--soft)}.paper-review-options b{font-size:13px;color:var(--muted)}@media(max-width:650px){.source-paper-stem{padding:10px;max-width:calc(100% - 22px);margin:19px 0}.source-paper-option{padding:6px;max-width:calc(100% - 26px)}.cbt-option>span{gap:6px}.section-save-status{font-size:10px;width:100%;margin-top:5px}.cbt-title #total-timer{font-size:11px}.paper-review-options>div{padding:9px}}
.source-paper-stem,.source-paper-option{cursor:zoom-in}.paper-image-viewer{position:fixed;inset:0;background:#eef2f8;z-index:50;color:#182b48;display:flex;flex-direction:column}.paper-image-viewer-header{display:flex;justify-content:space-between;align-items:center;padding:17px 22px;background:#fff;border-bottom:1px solid #dbe4f2;gap:15px}.paper-image-viewer-content{overflow:auto;flex:1;padding:25px;display:block;background:#f4f6fb}.paper-image-viewer-content img{background:#fff;padding:24px;border-radius:12px;display:block;image-rendering:auto}.paper-image-viewer-header b{font-size:15px}.source-paper-stem:focus-visible,.source-paper-option:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.section-submit-btn{border:1px solid var(--accent);color:var(--accent);background:var(--soft);font-weight:650}.section-submit-btn:hover{background:var(--accent);color:#fff}.section-submit-btn:disabled{opacity:.6;cursor:wait}@media(max-width:650px){.cbt-bottom-group:last-child{flex-wrap:wrap}.section-submit-btn{flex:1 1 44%;min-height:44px}}