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92px;position:relative;overflow:auto}.panel-heading{gap:4px;margin-bottom:13px;display:grid}.panel-heading b{font-size:14px}.panel-heading small{color:#8a929e;font-size:10px}.quick-actions{grid-template-columns:1fr 1fr;gap:7px;display:grid}.quick-actions button{text-align:left;color:#495466;background:#f8f9fb;border:1px solid #e3e6ec;border-radius:7px;min-height:52px;padding:8px;font-size:11px;line-height:1.4}.quick-actions button:hover{background:var(--blue-soft);color:#244d9e;border-color:#b8c9e8}.panel-answer{color:#2d394b;white-space:pre-wrap;background:#f4f7fc;border-radius:7px;margin-top:12px;padding:12px;font-size:12px;line-height:1.65}.panel-ask{background:#fff;border:1px solid #cfd5df;border-radius:9px;align-items:flex-end;gap:6px;padding:7px;display:flex;position:absolute;bottom:12px;left:12px;right:12px;box-shadow:0 5px 18px #23334b16}.panel-ask textarea{resize:none;border:0;outline:0;flex:1;min-height:46px;max-height:110px;padding:4px;font-size:12px;line-height:1.5}.panel-ask button{background:var(--blue);color:#fff;border:0;border-radius:6px;flex:0 0 30px;width:30px;height:30px}.outline-list{gap:2px;display:grid}.outline-list button{color:#3e4652;text-align:left;background:0 0;border:0;border-radius:5px;justify-content:space-between;align-items:flex-start;gap:8px;padding:8px 7px;font:12px/1.45 Georgia,Songti SC,serif;display:flex}.outline-list button:hover{color:var(--blue);background:#f1f4f8}.outline-list small{color:#a0a6af;font:10px system-ui,sans-serif}.figure-index{grid-template-columns:1fr 1fr;gap:8px;display:grid}.figure-index button{text-align:left;background:#fff;border:1px solid #e2e5e9;border-radius:7px;min-width:0;padding:0;overflow:hidden}.figure-index button:hover{border-color:#9eb6df;box-shadow:0 3px 10px #223b6312}.figure-index img{object-fit:contain;background:#fafafa;width:100%;height:96px;display:block}.figure-index span{color:#59616e;text-overflow:ellipsis;white-space:nowrap;padding:7px;font-size:10px;line-height:1.4;display:block;overflow:hidden}.panel-empty{text-align:center;color:#8a929e;padding:62px 18px}.panel-empty span{font-size:28px}.panel-empty p{color:#505866;margin:10px 0 5px;font-size:13px}.panel-empty small{font-size:10px;line-height:1.55}.note-list{gap:8px;display:grid}.note-list button{border:0;border-left:3px solid var(--blue);text-align:left;background:#f7f8fa;border-radius:5px;gap:5px;padding:9px 10px;display:grid}.note-list b{color:#6b7380;font-size:10px}.note-list span{color:#303742;font-size:12px;line-height:1.5}.reader-stage{background:#f3f3f1;flex:1;min-width:0}.reading-flow{box-shadow:0 2px 16px #18223810}.paper-masthead h1{font-size:calc(29px * var(--reader-scale,1))}.paper-authors{font-size:calc(15px * var(--reader-scale,1))}.paper-heading{font-size:calc(20px * var(--reader-scale,1))}.en-text{font-size:calc(15px * var(--reader-scale,1))}.zh-text{font-size:calc(15.5px * var(--reader-scale,1))}@media (width<=1100px){.research-panel{flex-basis:264px}.reader-head{grid-template-columns:64px 32px minmax(120px,1fr) auto}.reader-title small,.font-tools span{display:none}}@media (width<=820px){.reader-head{grid-template-columns:auto 32px minmax(0,1fr);gap:6px;min-height:104px;padding:7px 9px}.reader-title{text-align:left;grid-column:3}.reader-tools{border-top:1px solid #f0f0f0;grid-column:1/-1;justify-content:space-between;padding-top:4px}.mode-tabs{border:0;grid-column:auto;padding:0}.font-tools{margin-left:auto}.font-tools span{display:block}.reader-body{min-height:calc(100vh - 104px)}.research-panel{z-index:9;border-right:0;width:auto;height:auto;position:fixed;inset:104px 0 64px}.reader-stage{width:100%}.reading-flow{width:100%;margin:0;padding:34px 20px 48px}.paper-masthead h1{font-size:calc(24px * var(--reader-scale,1))}.paper-authors{font-size:calc(13.5px * var(--reader-scale,1))}.paper-heading{font-size:calc(19px * var(--reader-scale,1))}.en-text{font-size:calc(14.5px * var(--reader-scale,1))}.zh-text{font-size:calc(15.5px * var(--reader-scale,1))}}