:root{--reader-accent:#15b8cf;--reader-navy:#102238;--reader-text:#263244;--reader-muted:#718096;--reader-border:#e2e8ee}body:has(.book-reader){background:#eef2f5}.book-reader{color:var(--reader-text);background:#eef2f5;min-height:100vh;font:16px/1.8 Microsoft YaHei,Helvetica Neue,Arial,sans-serif}.book-reader *{box-sizing:border-box}.book-reader a{color:inherit;text-decoration:none}.book-reader-main{background:#fff;width:calc(100% - 40px);max-width:900px;min-height:100vh;margin:0 auto;position:relative;box-shadow:0 0 28px #10223814}.book-reader-header{border-bottom:1px solid var(--reader-border);z-index:20;background:#fffffff5;align-items:center;gap:12px;height:64px;padding:0 clamp(20px,5vw,56px);display:flex;position:sticky;top:0}.book-reader-back{cursor:pointer;background:0 0;border:0;border-radius:4px;flex:0 0 40px;justify-content:center;align-items:center;height:40px;padding:0;display:inline-flex}.book-reader-back:before{border-bottom:2px solid var(--reader-navy);border-left:2px solid var(--reader-navy);content:"";width:10px;height:10px;transform:rotate(45deg)}.book-reader-back:hover{background:#edf8fa}.book-reader-header>span{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-size:15px;font-weight:700;overflow:hidden}.book-reader-content{overflow-wrap:anywhere;min-height:600px;padding:76px clamp(34px,8vw,104px) 48px}.book-reader-content h2{color:var(--reader-navy);text-align:center;margin:0 130px 36px 0;font-size:clamp(22px,2.4vw,30px);line-height:1.45}.book-reader-content p{color:#303b4b;text-align:justify;text-indent:2em;margin:0 0 16px;font-size:17px;line-height:1.9}.book-reader-content img{cursor:zoom-in;margin:24px auto;display:block;width:auto!important;max-width:100%!important;height:auto!important}.book-reader-content table{border-collapse:collapse;max-width:100%}.book-reader-content iframe,.book-reader-content video{max-width:100%}.book-reader-pager{border-top:1px solid var(--reader-border);grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:36px;padding-top:20px;display:grid}.book-reader-pager a{color:#4a586d;background:#f6f8fa;border-radius:5px;min-height:48px;padding:12px;font-size:13px;line-height:1.6}.book-reader-pager a:last-child{text-align:right}.book-reader-shelf{border:1px solid var(--reader-accent);color:#008aa0;cursor:pointer;background:#fff;border-radius:4px;min-height:38px;padding:0 18px;font-size:14px;font-weight:700;position:absolute;top:82px;right:clamp(34px,8vw,104px)}.book-reader-shelf.collection{background:var(--reader-accent);color:#fff}.book-reader-message{background:var(--reader-navy);color:#fff;z-index:10000;border-radius:4px;max-width:calc(100% - 32px);padding:10px 18px;position:fixed;top:80px;left:50%;transform:translate(-50%)}.book-reader-catalog{border-right:1px solid var(--reader-border);background:#fff;width:250px;padding:24px 18px;position:fixed;top:0;bottom:0;left:0;overflow:auto}.book-reader-catalog h2{border-bottom:1px solid var(--reader-border);text-overflow:ellipsis;white-space:nowrap;margin:0 0 12px;padding:0 6px 12px;font-size:16px;line-height:1.5;overflow:hidden}.book-reader-catalog nav{flex-direction:column;display:flex}.book-reader-catalog nav a,.book-reader-catalog nav span{text-overflow:ellipsis;white-space:nowrap;border-radius:4px;min-height:34px;margin-bottom:2px;padding:7px 8px;font-size:13px;line-height:1.5;overflow:hidden}.book-reader-catalog nav a:hover,.book-reader-catalog nav a.is-active{color:#008aa0;background:#e9f8fa}.book-reader-catalog-backdrop,.book-reader-catalog-toggle{display:none}.book-reader-ads{width:180px;padding:20px 12px;position:fixed;top:0;bottom:0;right:0;overflow:auto}.book-reader-ad{width:100%!important;max-width:156px!important;margin:0 auto 16px!important}.book-reader-ad .legacy-ad-close,.book-reader-ad .legacy-ad-count{display:none}.book-reader-ads:not(:has(.book-reader-ad.has-ad)){display:none}.book-reader-tools{z-index:30;flex-direction:column;gap:8px;display:flex;position:fixed;bottom:32px;right:max(20px,50vw - 508px)}.book-reader-tools button{border:1px solid var(--reader-border);color:#3d4a5d;cursor:pointer;background:#fff;border-radius:50%;width:42px;height:42px;padding:0;font:13px/42px Microsoft YaHei,sans-serif;box-shadow:0 5px 15px #1022381f}.book-reader-tools button:hover{border-color:var(--reader-accent);color:#008aa0}.book-reader-tools .book-reader-bookmark:before{content:"签"}.book-reader-tools .book-reader-gotop:before{content:"↑"}.book-reader-hidden-login{display:none!important}.book-reader-image-viewer{z-index:10020;background:#000000e6;justify-content:center;align-items:center;display:flex;position:fixed;inset:0;overflow:hidden}.book-reader-image-viewer>img{cursor:grab;touch-action:none;-webkit-user-select:none;user-select:none;max-width:88vw;max-height:86vh;transition:transform 60ms linear}.book-reader-image-viewer>img:active{cursor:grabbing}.book-reader-viewer-close{color:#fff;cursor:pointer;background:#0000008c;border:1px solid #ffffffb3;border-radius:50%;width:42px;height:42px;font-size:28px;position:absolute;top:20px;right:24px}.book-reader-viewer-controls{z-index:2;background:#0009;border-radius:5px;gap:8px;padding:8px;display:flex;position:absolute;bottom:22px}.book-reader-viewer-controls button{color:#333;cursor:pointer;background:#fff;border:0;border-radius:3px;min-width:44px;height:36px;font-size:16px}@media (max-width:1440px){.book-reader-ads{display:none}}@media (max-width:1399px){.book-reader-catalog{visibility:hidden;z-index:60;width:280px;max-width:min(86vw,320px);transition:transform .2s,visibility .2s;display:block;transform:translate(-105%);box-shadow:10px 0 28px #1022382e}.book-reader-catalog.is-open{visibility:visible;transform:translate(0)}.book-reader-catalog-backdrop{opacity:0;pointer-events:none;z-index:55;background:#08132275;border:0;transition:opacity .2s;display:block;position:fixed;inset:0}.book-reader-catalog-backdrop.is-open{opacity:1;pointer-events:auto}.book-reader-catalog-toggle{display:block}.book-reader-tools{right:18px}.book-reader-main{max-width:900px}}@media (max-width:700px){body:has(.book-reader){background:#fff}.book-reader-main{box-shadow:none;width:100%;overflow:clip}.book-reader-header{gap:4px;height:56px;padding:0 12px;box-shadow:0 3px 10px #10223814}.book-reader-back{flex-basis:44px;height:44px}.book-reader-header>span{text-align:center;padding-right:44px;font-size:15px}.book-reader-catalog{width:min(86vw,300px);padding-top:18px}.book-reader-tools{border-bottom:1px solid var(--reader-border);z-index:19;background:#fff;flex-direction:row;justify-content:flex-end;align-items:center;gap:4px;width:100%;height:48px;padding:6px 10px;display:flex;position:sticky;inset:56px auto auto 0}.book-reader-tools button{box-shadow:none;border-radius:4px;width:auto;min-width:36px;height:36px;padding:0 8px;font-size:12px;line-height:34px;position:relative}.book-reader-tools button:after{content:"";position:absolute;inset:-4px}.book-reader-tools .book-reader-bookmark:before{content:"书签"}.book-reader-tools .book-reader-gotop:before{content:"顶部"}.book-reader-content{min-height:calc(100vh - 104px);padding:28px 16px 52px}.book-reader-content h2{text-align:left;margin:0 86px 26px 0;font-size:21px;line-height:1.5}.book-reader-content p{margin-bottom:15px;font-size:17px;line-height:1.85}.book-reader-content table{width:100%;display:block;overflow-x:auto}.book-reader-shelf{z-index:2;height:34px;padding:0 9px;font-size:12px;line-height:32px;top:126px;right:16px;min-height:34px!important}.book-reader-shelf:after{content:"";position:absolute;inset:-5px}.book-reader-pager{grid-template-columns:1fr;gap:9px}.book-reader-pager a{text-align:left!important}.book-reader-message{top:118px}.book-reader-viewer-close{top:12px;right:12px}.book-reader-viewer-controls{bottom:14px}}@media (max-width:360px){.book-reader-content{padding-inline:14px}.book-reader-content p{font-size:16px}.book-reader-tools{gap:3px;padding-inline:8px}.book-reader-tools button{padding-inline:6px}.book-reader-shelf{right:14px}}@media (prefers-reduced-motion:reduce){.book-reader-catalog,.book-reader-catalog-backdrop{scroll-behavior:auto;transition:none}}