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:root{--bg:#f7f5ef;--paper:#fffefa;--ink:#303b34;--muted:#8c9085;--green:#526b54;--line:#e5e5db;--soft:#ecefe5}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:"Segoe UI","Microsoft YaHei",sans-serif;font-size:14px}button,input,select,textarea{font:inherit}button,a,input,select,textarea{ -webkit-tap-highlight-color:transparent}button{cursor:pointer;border:0;background:none;color:inherit}button:focus-visible,a:focus-visible{outline:2px solid var(--green);outline-offset:4px}button:hover{filter:brightness(.94)}a{color:inherit;text-decoration:none}[hidden]{display:none!important}.sidebar{width:222px;background:#eeeee5;position:fixed;inset:0 auto 0 0;border-right:1px solid var(--line);padding:36px 20px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:12px;padding-left:10px;font-family:Georgia,"SimSun",serif;font-size:26px;letter-spacing:4px}.brand-icon{width:43px;height:46px;border-radius:12px 3px 12px 3px;background:var(--green);color:#fffced;font-size:25px;text-align:center;line-height:46px;letter-spacing:0}.brand small{font-family:Arial,sans-serif;display:block;font-size:8px;letter-spacing:2px;margin-top:7px;color:#868c7e}.nav-label{font-size:10px;color:var(--muted);letter-spacing:2px;margin:54px 16px 15px}.nav{display:flex;align-items:center;gap:13px;padding:13px 16px;text-align:left;border-radius:6px;margin:3px 0}.nav span{font-size:20px;line-height:20px}.nav.active{background:#dfe5d7;color:#425c44;font-weight:600}.nav em{margin-left:auto;font-size:11px;font-style:normal;background:#f4f5ef;padding:2px 6px;border-radius:3px}.side-note{margin-top:auto;padding:40px 8px;color:#7d8676}.side-note>span{font-size:30px}.side-note p{font-family:Georgia,"SimSun",serif;font-size:15px}.side-note small{font-size:10px;color:#929789}.local-info{border-top:1px solid #dbded2;padding:20px 10px 0;font-size:11px;color:#707b69}.local-info i{display:inline-block;width:6px;height:6px;background:#759366;border-radius:50%;margin-right:6px}.local-info small{display:block;margin:8px 0 0 13px;font-size:10px;color:#929789}main{margin-left:222px;min-height:100vh}header{height:82px;border-bottom:1px solid var(--line);padding:0 48px;display:flex;align-items:center;justify-content:space-between;font-size:12px}#breadcrumb span{color:#b9bdb3;padding:0 14px}.header-right{display:flex;align-items:center;gap:24px}.save-state{font-size:11px;color:#7c8976}.avatar{width:32px;height:32px;border-radius:50%;background:#e7e7db;display:grid;place-items:center;font-family:serif;color:#7e8670}#library,#backupPage{padding:47px 48px 20px;max-width:1500px;margin:auto}.intro{display:flex;align-items:center;justify-content:space-between}.eyebrow{font-size:9px;letter-spacing:2.3px;color:#919b86;margin-bottom:14px}h1{font-family:Georgia,"SimSun",serif;font-weight:500;font-size:33px;margin:0 0 14px;letter-spacing:2px}h1 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YaHei",sans-serif;margin-top:9px;color:#a3aa99}.shelf-bar{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);margin-bottom:28px;gap:12px}.tab{padding:13px 4px 16px;margin-right:22px;font-size:12px;color:#8a9084;position:relative}.tab.selected{color:#405a43;font-weight:bold}.tab.selected:after{position:absolute;content:"";height:2px;background:#526b54;bottom:-1px;left:0;right:0}.shelf-tools{display:flex;gap:12px;align-items:center}.shelf-tools input{background:transparent;border:1px solid var(--line);padding:8px 12px;border-radius:5px;width:175px;font-size:11px}.shelf-tools select{font-size:11px;color:#7d8477;border:0;background:transparent;padding:5px}.books{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.book-card{position:relative;background:#fffefa;border:1px solid var(--line);border-radius:7px;overflow:hidden;transition:transform .2s,box-shadow .2s}.book-card:hover{transform:translateY(-3px);box-shadow:0 8px 22px #48583c0c}.book-cover{height:177px;padding:25px;position:relative;overflow:hidden;background:#e3e7dc;color:#65755b;display:flex;flex-direction:column;align-items:center;justify-content:center}.book-cover:before,.book-cover:after{content:"";position:absolute;width:180px;height:180px;border:1px solid currentColor;opacity:.12;border-radius:50%;right:-70px;top:10px}.book-cover:after{width:260px;height:260px;top:45px;right:-105px}.cover-line{width:22px;height:1px;background:currentColor;opacity:.5;margin-bottom:14px}.cover-title{font:25px/1.5 "SimSun",serif;letter-spacing:5px;max-width:100%;text-align:center;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;z-index:1}.cover-author{font-size:9px;letter-spacing:3px;margin-top:12px}.cover-genre{position:absolute;top:14px;left:14px;font-size:9px;border:1px solid #ffffff90;background:#ffffff40;padding:4px 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#cdd3c3;border-radius:7px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#829078;gap:15px;background:#f5f5ed}.new-card .plus{width:44px;height:44px;border:1px solid #d9dfcf;border-radius:50%;font-size:26px;font-weight:200;display:grid;place-items:center}.new-card small{font-size:10px;color:#a1a895}.library-bottom{margin-top:34px;padding-top:20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:#a3a795;font-size:10px}.link{color:var(--green);font-size:11px}.page-footer{text-align:center;padding:35px 20px 20px;color:#b2b5a9;font-size:9px;letter-spacing:2px}.page-footer span{padding:0 6px}.workspace-top{height:66px;padding:0 30px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.workspace-top>div{display:flex;gap:8px}.writing-layout{display:grid;grid-template-columns:220px 1fr;min-height:calc(100vh - 148px)}.chapters{border-right:1px solid var(--line);padding:24px 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button{font-size:9px;color:#88927c;padding:2px}.paper-area{min-width:0;background:#faf9f4}.toolbar{display:flex;align-items:center;justify-content:center;gap:8px;padding:12px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#faf9f4;z-index:1}.toolbar button{padding:5px 8px;font-family:Georgia,serif}.toolbar select{font-size:10px;background:transparent;border:0;color:#7c8473}.tool-divider{height:15px;width:1px;background:var(--line);margin:0 4px}.paper{max-width:790px;margin:35px auto;padding:35px 52px 65px;background:var(--paper);min-height:65vh}#chapterTitle{border:0;background:transparent;width:100%;outline:0;font:26px/1.6 "SimSun",serif;color:var(--ink);margin-bottom:28px}#editor{outline:0;min-height:400px;font:20px/2 "SimSun",serif;overflow-wrap:anywhere;white-space:pre-wrap}#editor:empty:before{content:attr(data-placeholder);color:#b5b9ac;pointer-events:none}#editor p{margin:0 0 1em}#editor.indented 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@media(min-width:1500px){.books{grid-template-columns:repeat(4,minmax(0,1fr))}}@media(max-width:1150px){.sidebar{width:190px;padding:30px 14px}main{margin-left:190px}header{padding:0 30px}#library,#backupPage{padding:35px 30px}.books{grid-template-columns:repeat(2,minmax(0,1fr))}.stats>div{padding:0 18px}.stats .quote{font-size:12px;padding-left:20px}.writing-layout{grid-template-columns:185px 1fr}.paper{padding:25px 30px}}@media(max-width:760px){.sidebar{position:static;width:auto;padding:16px 20px;flex-direction:row;align-items:center;gap:12px}.brand{font-size:22px;padding:0;margin-right:auto}.brand-icon{width:32px;height:35px;line-height:35px;font-size:20px}.brand small{display:none}.nav{font-size:11px;padding:9px}.nav span,.nav em,.nav-label,.side-note,.local-info{display:none}main{margin-left:0}header{height:55px;padding:0 20px}.avatar{display:none}#library,#backupPage{padding:30px 20px}.intro{gap:10px}h1{font-size:28px}h1 span{font-size:10px;line-height:1.8}.eyebrow{font-size:8px;letter-spacing:1px}.primary{padding:11px 14px;white-space:nowrap}.stats{grid-template-columns:repeat(3,1fr);padding:20px 0;margin:24px 0}.stats .quote{display:none}.stats>div:nth-child(3){border:0}.stats strong{font-size:25px}.shelf-bar{align-items:flex-start;flex-direction:column;gap:0}.shelf-tools{width:100%;margin-bottom:12px}.shelf-tools input{flex:1}.books{gap:14px}.book-cover{height:150px;padding:22px 10px}.cover-title{font-size:20px;letter-spacing:3px}.book-content{padding:14px}.book-heading{flex-wrap:wrap}.book-desc{font-size:10px}.book-meta{gap:8px;font-size:9px}.book-bottom{gap:5px;flex-wrap:wrap}.new-card{min-height:340px}.library-bottom{align-items:flex-start;gap:15px}.library-bottom>span{max-width:65%;line-height:1.8}.writing-layout{display:flex;flex-direction:column}.chapters{padding:10px;border-right:0;border-bottom:1px solid var(--line)}.chapter-book{display:none}.chapter-heading{padding:0 8px}.chapter-heading button{font-size:18px}#chapterList{display:flex;overflow-x:auto}.chapter-item{min-width:130px;max-width:190px}.paper{margin:12px 10px;padding:25px 22px}.workspace-top{padding:12px;height:auto;gap:8px}.workspace-top .subtle{padding:7px;font-size:10px}.toolbar{gap:3px}.toolbar button{padding:5px}#chapterTitle{font-size:23px}.editor-footer{padding:12px 20px;gap:10px}.backup-grid{grid-template-columns:1fr}.page-footer{padding-top:25px}}@media(max-width:380px){.books{grid-template-columns:1fr}.nav{padding:8px 4px}.brand{font-size:18px}.header-right{display:none}}