*{box-sizing:border-box}:root{font-family:Noto Sans SC,Microsoft YaHei,system-ui,-apple-system,sans-serif;line-height:1.5;font-weight:400;color:#213547;background-color:#fff;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;min-width:768px;min-height:100vh}#root{height:100vh}.editor-container{display:flex;flex-direction:column;height:100%;min-height:0;position:relative}.editor-header{display:flex;align-items:baseline;gap:12px;padding:12px 16px;border-bottom:1px solid #e5e7eb;flex-shrink:0}.editor-label{font-size:15px;font-weight:600;color:#1f2937}.editor-hint{font-size:12px;color:#9ca3af}.editor-textarea{flex:1;width:100%;padding:16px;border:none;outline:none;resize:none;font-family:Noto Sans SC,Microsoft YaHei,sans-serif;font-size:14px;line-height:1.8;color:#374151;background:#fafafa}.editor-textarea::placeholder{color:#d1d5db}.editor-drop-overlay{position:absolute;inset:0;background:#2563eb14;border:2px dashed #2563eb;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:500;color:#2563eb;z-index:10;pointer-events:none}.editor-drop-overlay--importing{background:#2563eb0a;border-style:solid;color:#6b7280}.a4-page{position:relative;width:100%;max-width:595px;aspect-ratio:210 / 297;margin:0 auto;background:#fff;box-shadow:0 2px 12px #0000001a;border-radius:2px;overflow:hidden}.a4-page+.a4-page{margin-top:16px}.a4-content{padding:var(--margin-top, 17.62%) var(--margin-right, 12.38%) var(--margin-bottom, 16.67%) var(--margin-left, 13.33%);height:100%;overflow:hidden;box-sizing:border-box;display:flex;flex-direction:column}.a4-content-viewport{overflow:hidden}.a4-title,.a4-h1,.a4-h2,.a4-h3,.a4-h4,.a4-paragraph,.a4-addressee,.a4-attachment,.a4-date{letter-spacing:var(--char-spacing, 0)}.a4-title{font-family:var(--title-font, "FZXiaoBiaoSong-B05S"),"STSong","SimSun",serif;font-size:var(--title-size, 22px);font-weight:700;text-align:center;line-height:var(--title-line-height, 29px);margin:0}.a4-h1{font-size:var(--h1-size, 16px);font-weight:400;text-indent:var(--body-indent, 2em);text-align:justify;line-height:var(--body-line-height, 29px);margin:0}.a4-h1-inline{font-family:var(--h1-font, "SimHei"),"Heiti SC",sans-serif}.a4-h2{font-size:var(--h2-size, 16px);font-weight:400;font-style:normal;text-indent:var(--body-indent, 2em);text-align:justify;line-height:var(--body-line-height, 29px);margin:0}.a4-h2-inline{font-family:var(--h2-font, "KaiTi_GB2312"),"KaiTi","STKaiti",serif;font-style:normal}.a4-paragraph-inline{font-family:var(--body-font, "FangSong_GB2312"),"FangSong","STFangsong",serif;font-weight:400}.a4-h3-inline{font-family:var(--h3-font, "FangSong_GB2312"),"FangSong","STFangsong",serif;font-weight:700}.a4-h4-inline{font-family:var(--body-font, "FangSong_GB2312"),"FangSong","STFangsong",serif}.a4-h3{font-family:var(--h3-font, "FangSong_GB2312"),"FangSong","STFangsong",serif;font-size:var(--body-size, 16px);font-weight:400;text-indent:var(--body-indent, 2em);line-height:var(--body-line-height, 29px);margin:0}.a4-h4{font-family:var(--body-font, "FangSong_GB2312"),"FangSong","STFangsong",serif;font-size:var(--body-size, 16px);font-weight:400;text-indent:var(--body-indent, 2em);line-height:var(--body-line-height, 29px);margin:0}.a4-paragraph{font-family:var(--body-font, "FangSong_GB2312"),"FangSong","STFangsong",serif;font-size:var(--body-size, 16px);font-weight:400;text-indent:var(--body-indent, 2em);text-align:justify;line-height:var(--body-line-height, 29px);margin:0}.a4-placeholder{text-align:center;color:#d1d5db;font-size:14px;padding-top:40%;margin:0}.a4-addressee{font-family:var(--body-font, "FangSong_GB2312"),"FangSong","STFangsong",serif;font-size:var(--body-size, 16px);text-indent:0;text-align:justify;line-height:var(--body-line-height, 29px);margin:var(--body-line-height, 29px) 0 0 0}.a4-attachment{font-family:var(--body-font, "FangSong_GB2312"),"FangSong","STFangsong",serif;font-size:var(--body-size, 16px);text-indent:0;padding-left:var(--body-indent, 2em);text-align:justify;line-height:var(--body-line-height, 29px);margin:var(--body-line-height, 29px) 0 0 0}.a4-date{font-family:var(--body-font, "FangSong_GB2312"),"FangSong","STFangsong",serif;font-size:var(--body-size, 16px);text-indent:0;text-align:right;padding-right:4em;line-height:var(--body-line-height, 29px);margin:0}.a4-measurer{position:absolute;top:0;left:0;max-width:595px;visibility:hidden;pointer-events:none;z-index:-1}.a4-measurer-content{padding:0 var(--margin-right, 12.38%) 0 var(--margin-left, 13.33%);position:relative}.a4-footer{position:absolute;bottom:8.3%;left:var(--margin-left, 13.33%);right:var(--margin-right, 12.38%);font-family:"Times New Roman",var(--page-number-font, "宋体"),serif;font-size:14px;color:#374151}.a4-footer-odd{text-align:right}.a4-footer-even{text-align:left}.a4-bold-first{font-weight:700}.a4-header-section{margin-bottom:calc(var(--body-line-height, 29px) * 2)}.a4-header-org{font-family:方正小标宋_GBK,STSong,serif;font-size:30px;color:#e00000;text-align:center;line-height:1.4;letter-spacing:0}.a4-header-separator{border-bottom:2px solid #e00000;margin-top:8px}.a4-header-meta{display:flex;justify-content:center;padding:0 1em;margin-top:calc(var(--body-line-height, 29px) * 2);font-family:var(--body-font);font-size:var(--body-size);line-height:var(--body-line-height);letter-spacing:0}.a4-header-meta--with-signer{justify-content:space-between}.a4-header-signer-label{font-family:var(--body-font, "FangSong_GB2312"),"FangSong","STFangsong",serif}.a4-header-signer-name{font-family:KaiTi_GB2312,KaiTi,STKaiti,serif}.a4-footer-note{position:absolute;bottom:var(--margin-bottom-y, 11.78%);left:var(--margin-left, 13.33%);right:var(--margin-right, 12.38%);font-family:var(--body-font);font-size:14px;line-height:28px}.a4-footer-note-line-top{border-top:1px solid #000}.a4-footer-note-line-bottom{border-top:2px solid #000}.a4-footer-note-cc{text-indent:0}.a4-footer-note-printer{display:flex;justify-content:space-between}.preview-container{display:flex;flex-direction:column;height:100%;min-height:0;background:#f3f4f6}.preview-header{display:flex;align-items:baseline;gap:12px;padding:12px 16px;border-bottom:1px solid #e5e7eb;background:#fff;flex-shrink:0}.preview-label{font-size:15px;font-weight:600;color:#1f2937}.preview-hint{font-size:12px;color:#9ca3af}.preview-scroll{flex:1;overflow-y:auto;padding:24px 16px;position:relative}.settings-overlay{position:fixed;inset:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:1000}.settings-modal{background:#fff;border-radius:12px;box-shadow:0 20px 60px #00000026;width:640px;max-width:90vw;max-height:80vh;display:flex;flex-direction:column}.settings-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid #e5e7eb;flex-shrink:0}.settings-title{font-size:17px;font-weight:600;color:#111827;margin:0}.settings-close{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border:none;background:none;border-radius:6px;cursor:pointer;color:#6b7280;font-size:14px;transition:background .15s}.settings-close:hover{background:#f3f4f6;color:#111827}.settings-body{flex:1;overflow-y:auto;padding:16px 20px}.settings-section{margin-bottom:20px}.settings-section:last-child{margin-bottom:0}.settings-section-title{font-size:14px;font-weight:600;color:#374151;margin:0 0 10px;padding-bottom:6px;border-bottom:1px solid #f3f4f6}.settings-tag{font-size:11px;font-weight:500;color:#9ca3af;background:#f9fafb;padding:1px 6px;border-radius:3px;margin-left:6px}.settings-grid{display:grid;gap:10px 16px}.settings-grid--2{grid-template-columns:1fr 1fr}.settings-grid--3{grid-template-columns:1fr 1fr 1fr}.settings-grid--4{grid-template-columns:1fr 1fr 1fr 1fr}.settings-field{display:flex;flex-direction:column;gap:3px}.settings-field-label{font-size:12px;color:#6b7280}.settings-select{padding:6px 8px;border:1px solid #d1d5db;border-radius:6px;font-size:13px;color:#111827;background:#fff;cursor:pointer;transition:border-color .15s}.settings-select:focus{outline:none;border-color:#2563eb;box-shadow:0 0 0 2px #2563eb1a}.settings-input{padding:6px 8px;border:1px solid #d1d5db;border-radius:6px;font-size:13px;color:#111827;background:#fff;width:100%;min-width:0;box-sizing:border-box;transition:border-color .15s}.settings-input:focus{outline:none;border-color:#2563eb;box-shadow:0 0 0 2px #2563eb1a}.settings-input::placeholder{color:#9ca3af}.settings-number-wrap{display:flex;align-items:center;gap:4px}.settings-number{padding:6px 8px;border:1px solid #d1d5db;border-radius:6px;font-size:13px;color:#111827;width:100%;min-width:0;transition:border-color .15s}.settings-number:focus{outline:none;border-color:#2563eb;box-shadow:0 0 0 2px #2563eb1a}.settings-unit{font-size:12px;color:#9ca3af;flex-shrink:0}.settings-checkbox{display:flex;align-items:center;gap:8px;font-size:13px;color:#374151;cursor:pointer}.settings-checkbox input[type=checkbox]{width:16px;height:16px;cursor:pointer;accent-color:#2563eb}.settings-options{display:flex;flex-direction:column;gap:10px}.settings-sub-option{margin-left:24px;max-width:240px}.settings-hint{font-size:12px;color:#9ca3af;margin:8px 0 0}.settings-section-toggle{display:flex;align-items:center;justify-content:space-between;width:100%;padding:8px 0;border:none;background:none;font-size:14px;font-weight:600;color:#374151;cursor:pointer;border-bottom:1px solid #f3f4f6}.settings-section-toggle:hover{color:#111827}.settings-arrow{font-size:12px;transition:transform .2s}.settings-arrow--open{transform:rotate(90deg)}.settings-advanced{margin-top:12px}.settings-advanced-row{margin-bottom:12px}.settings-advanced-row:last-child{margin-bottom:0}.settings-advanced-label{display:block;font-size:13px;font-weight:500;color:#4b5563;margin-bottom:6px}.settings-footer{display:flex;justify-content:flex-end;gap:10px;padding:14px 20px;border-top:1px solid #e5e7eb;flex-shrink:0}.settings-btn{padding:7px 16px;border:none;border-radius:6px;font-size:13px;font-weight:500;cursor:pointer;transition:background .15s}.settings-btn--reset{background:#fef2f2;color:#dc2626}.settings-btn--reset:hover{background:#fee2e2}.settings-btn--close{background:#f3f4f6;color:#374151}.settings-btn--close:hover{background:#e5e7eb}.toolbar{display:flex;align-items:center;justify-content:space-between;padding:0 20px;height:56px;background:#fff;border-bottom:1px solid #e5e7eb;flex-shrink:0}.toolbar-left{display:flex;align-items:center;gap:10px}.toolbar-title{font-size:18px;font-weight:700;color:#111827;margin:0}.toolbar-badge{font-size:11px;font-weight:500;color:#6b7280;background:#f3f4f6;padding:2px 8px;border-radius:4px}.toolbar-right{display:flex;align-items:center;gap:12px}.toolbar-stats{font-size:13px;color:#6b7280}.toolbar-btn{padding:8px 16px;border:none;border-radius:6px;font-size:14px;font-weight:500;cursor:pointer;transition:background .15s,opacity .15s}.toolbar-btn:disabled{opacity:.4;cursor:not-allowed}.toolbar-btn--settings{display:flex;align-items:center;gap:5px;background:#f3f4f6;color:#374151}.toolbar-btn--settings:hover:not(:disabled){background:#e5e7eb}.toolbar-btn--import{background:#eff6ff;color:#2563eb}.toolbar-btn--import:hover:not(:disabled){background:#dbeafe}.toolbar-btn--clear{background:#f3f4f6;color:#374151}.toolbar-btn--clear:hover:not(:disabled){background:#e5e7eb}.toolbar-btn--export{background:#2563eb;color:#fff}.toolbar-btn--export:hover:not(:disabled){background:#1d4ed8}.app{display:flex;flex-direction:column;height:100vh;overflow:hidden}.app-main{display:flex;flex:1;min-height:0}.app-editor{flex:1;border-right:1px solid #e5e7eb;min-width:0}.app-preview{flex:1;min-width:0}