:root{--font-display: "Fraunces", Georgia, serif;--font-body: "Newsreader", "Georgia", serif;--font-mono: "Fira Code", monospace;--ink: #0a0a0b;--surface: #131315;--card: #1a1a1e;--card-elevated: #212126;--border-subtle: rgba(212, 165, 116, .08);--border-warm: rgba(212, 165, 116, .15);--border-focus: rgba(212, 165, 116, .3);--text-primary: #e8dcc8;--text-secondary: #8a8078;--text-muted: #5a554f;--text-accent: #d4a574;--deletion: #e06c75;--deletion-bg: rgba(224, 108, 117, .1);--insertion: #98c379;--insertion-bg: rgba(152, 195, 121, .1);--comment: #c678dd;--comment-bg: rgba(198, 120, 221, .1);--glow-amber: rgba(212, 165, 116, .06);--glow-warm: 0 0 80px rgba(212, 165, 116, .04);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .4);--shadow-md: 0 4px 12px rgba(0, 0, 0, .5);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .6);--shadow-float: 0 16px 48px rgba(0, 0, 0, .7);--radius-xs: 4px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--ease-out: cubic-bezier(.16, 1, .3, 1);--duration-fast: .15s;--duration-normal: .25s;--duration-slow: .4s;color-scheme:dark;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}[data-theme=light]{--ink: #f5f0e8;--surface: #ebe5da;--card: #ffffff;--card-elevated: #f9f6f1;--border-subtle: rgba(120, 90, 50, .1);--border-warm: rgba(120, 90, 50, .2);--border-focus: rgba(120, 90, 50, .35);--text-primary: #2c2418;--text-secondary: #7a6e5e;--text-muted: #b0a594;--text-accent: #9a6b3a;--deletion: #c0392b;--deletion-bg: rgba(192, 57, 43, .08);--insertion: #27864a;--insertion-bg: rgba(39, 134, 74, .08);--comment: #8e44ad;--comment-bg: rgba(142, 68, 173, .08);--glow-amber: rgba(154, 107, 58, .05);--glow-warm: 0 0 80px rgba(154, 107, 58, .03);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .1);--shadow-float: 0 16px 48px rgba(0, 0, 0, .12);color-scheme:light}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:var(--font-body);font-size:16px;line-height:1.6;color:var(--text-primary);background-color:var(--ink);min-width:320px;min-height:100vh}#root{width:100%;height:100vh;text-align:left}button{font-family:var(--font-body);font-size:.875rem;cursor:pointer;border:none;background:none;color:inherit;padding:0}button:focus-visible{outline:2px solid var(--text-accent);outline-offset:2px}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--text-muted);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}::selection{background:#d4a57440;color:var(--text-primary)}[data-theme=light] ::selection{background:#9a6b3a33}body,.app-container,.app-header,.toolbar,.sidebar,.ProseMirror,.editor-workspace,.comment-card,.modal-content{transition:background-color .3s ease,color .3s ease,border-color .3s ease}.app-container{display:flex;flex-direction:column;height:100vh;width:100vw;background-color:var(--ink);color:var(--text-primary);overflow:hidden}.app-header{padding:0 28px;height:56px;background:var(--surface);border-bottom:1px solid var(--border-subtle);display:flex;justify-content:space-between;align-items:center;flex-shrink:0;position:relative;z-index:10}.app-header:after{content:"";position:absolute;bottom:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--border-warm),transparent)}.app-title{font-family:var(--font-display);font-size:1.35rem;font-weight:500;font-style:italic;margin:0;color:var(--text-accent);letter-spacing:-.01em;font-optical-sizing:auto}.header-actions{display:flex;gap:6px;align-items:center}.theme-toggle{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:transparent;border:1px solid var(--border-subtle);color:var(--text-secondary);cursor:pointer;transition:all var(--duration-fast) var(--ease-out);margin-left:4px;flex-shrink:0}.theme-toggle:hover{color:var(--text-accent);border-color:var(--border-warm);background:var(--glow-amber)}.btn-header{display:inline-flex;align-items:center;gap:5px;padding:6px 14px;font-family:var(--font-body);font-size:.82rem;font-weight:500;color:var(--text-secondary);background:transparent;border:1px solid var(--border-subtle);border-radius:var(--radius-sm);transition:all var(--duration-fast) var(--ease-out);letter-spacing:.01em}.btn-header:hover{color:var(--text-primary);border-color:var(--border-warm);background:var(--glow-amber)}.btn-header.active{color:var(--text-accent);border-color:var(--border-focus);background:#d4a57414}.app-main{display:flex;flex:1;overflow:hidden;position:relative}.editor-workspace{flex:1;display:flex;flex-direction:column;background-color:var(--ink);position:relative}.editor-workspace:before{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:60%;height:60%;background:radial-gradient(ellipse,rgba(212,165,116,.03) 0%,transparent 70%);pointer-events:none;z-index:0}.toolbar{padding:6px 20px;background:var(--surface);border-bottom:1px solid var(--border-subtle);display:flex;gap:2px;flex-wrap:wrap;align-items:center;flex-shrink:0;z-index:5}.toolbar-btn{background:transparent;color:var(--text-muted);border:1px solid transparent;border-radius:var(--radius-xs);padding:6px;display:flex;align-items:center;justify-content:center;transition:all var(--duration-fast) var(--ease-out);cursor:pointer}.toolbar-btn:hover{color:var(--text-primary);background:var(--glow-amber)}.toolbar-btn.active{color:var(--text-accent);background:#d4a5741a;border-color:var(--border-warm)}.toolbar-btn.deletion-btn:hover{color:var(--deletion);background:var(--deletion-bg)}.toolbar-btn.deletion-btn.active{color:var(--deletion);background:var(--deletion-bg);border-color:#e06c7540}.toolbar-btn.insertion-btn:hover{color:var(--insertion);background:var(--insertion-bg)}.toolbar-btn.insertion-btn.active{color:var(--insertion);background:var(--insertion-bg);border-color:#98c37940}.toolbar-btn.comment-btn:hover{color:var(--comment);background:var(--comment-bg)}.toolbar-label{font-size:.7rem;color:var(--text-muted);margin:0 6px 0 4px;-webkit-user-select:none;user-select:none;text-transform:uppercase;letter-spacing:.08em;font-family:var(--font-body)}.toolbar-divider{width:1px;height:20px;background:var(--border-subtle);margin:0 6px}.editor-container{flex:1;overflow-y:auto;padding:40px 32px;display:flex;justify-content:center;position:relative;z-index:1}.ProseMirror{width:100%;max-width:760px;min-height:100%;background:var(--card);border-radius:var(--radius-md);padding:48px 52px;box-shadow:var(--shadow-md),var(--glow-warm);border:1px solid var(--border-subtle);color:var(--text-primary);font-family:var(--font-body);line-height:1.85;font-size:1.05rem;transition:border-color var(--duration-normal) var(--ease-out),box-shadow var(--duration-normal) var(--ease-out)}.ProseMirror:focus{outline:none;border-color:var(--border-warm);box-shadow:var(--shadow-lg),0 0 40px #d4a5740f}.ProseMirror>*+*{margin-top:.75em}.ProseMirror h1,.ProseMirror h2,.ProseMirror h3,.ProseMirror h4{font-family:var(--font-display);color:var(--text-primary);font-weight:600;margin-top:1.6em;margin-bottom:.4em;line-height:1.25;letter-spacing:-.02em;font-optical-sizing:auto}.ProseMirror h1{font-size:2rem;color:var(--text-accent);font-weight:500;font-style:italic}.ProseMirror h2{font-size:1.5rem;font-weight:600}.ProseMirror h3{font-size:1.2rem}.ProseMirror a{color:var(--text-accent);text-decoration:underline;text-decoration-color:#d4a5744d;text-underline-offset:3px;transition:text-decoration-color var(--duration-fast)}.ProseMirror a:hover{text-decoration-color:var(--text-accent)}.ProseMirror code{background-color:#d4a57414;padding:.15em .4em;border-radius:3px;font-size:.88em;font-family:var(--font-mono);color:var(--text-accent);border:1px solid var(--border-subtle)}.ProseMirror pre{background:var(--ink);color:var(--text-primary);padding:1.2rem;border-radius:var(--radius-sm);overflow-x:auto;border:1px solid var(--border-subtle);font-size:.88rem}.ProseMirror pre code{color:inherit;padding:0;background:none;border:none}.ProseMirror blockquote{border-left:2px solid var(--text-accent);margin-left:0;padding-left:1.2rem;color:var(--text-secondary);font-style:italic}.ProseMirror ul,.ProseMirror ol{padding-left:1.5rem}.ProseMirror li{margin:.3em 0}.ProseMirror p.is-editor-empty:first-child:before{color:var(--text-muted);content:attr(data-placeholder);float:left;height:0;pointer-events:none;font-style:italic}.ProseMirror s,.ProseMirror .deletion{color:var(--deletion);text-decoration:line-through;text-decoration-color:var(--deletion);opacity:.75}.ProseMirror span.insertion{color:var(--insertion);font-weight:500;background:var(--insertion-bg);padding:0 2px;border-radius:2px}.ProseMirror span.comment-mark{background-color:var(--comment-bg);border-bottom:2px solid var(--comment);border-radius:2px;cursor:pointer;transition:background-color var(--duration-fast)}.ProseMirror span.comment-mark:hover{background-color:#c678dd33}.sidebar{width:300px;min-width:300px;background:var(--surface);border-left:1px solid var(--border-subtle);display:flex;flex-direction:column;z-index:10;position:relative}.sidebar:before{content:"";position:absolute;top:0;left:-1px;bottom:0;width:1px;background:linear-gradient(180deg,var(--border-warm),transparent 50%)}.sidebar-header{padding:16px 20px;border-bottom:1px solid var(--border-subtle);font-family:var(--font-body);font-weight:600;font-size:.9rem;display:flex;align-items:center;gap:8px;color:var(--text-secondary);letter-spacing:.01em}.sidebar-content{flex:1;overflow-y:auto;padding:16px}.empty-state{text-align:center;color:var(--text-muted);margin-top:3rem;display:flex;flex-direction:column;align-items:center;gap:12px;font-style:italic;font-size:.88rem}.comment-list{display:flex;flex-direction:column;gap:10px}.comment-card{background:var(--card);padding:12px 14px;border-radius:var(--radius-sm);border-left:2px solid var(--comment);transition:all var(--duration-fast) var(--ease-out);animation:slideIn var(--duration-slow) var(--ease-out)}.comment-card:hover{background:var(--card-elevated);border-left-color:var(--text-accent)}.comment-card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}.comment-card-id{font-size:.7rem;color:var(--comment);font-weight:600;font-family:var(--font-mono);letter-spacing:.02em}.comment-delete-btn{background:transparent;border:none;color:var(--text-muted);cursor:pointer;padding:2px;border-radius:var(--radius-xs);display:flex;align-items:center;opacity:0;transition:all var(--duration-fast)}.comment-card:hover .comment-delete-btn{opacity:1}.comment-delete-btn:hover{color:var(--deletion);background:var(--deletion-bg)}.comment-card-text{font-size:.88rem;line-height:1.55;margin-bottom:6px;color:var(--text-primary)}.comment-card-time{font-size:.7rem;color:var(--text-muted);font-family:var(--font-mono)}.modal-overlay{position:fixed;inset:0;background:#000000a6;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:100;animation:fadeIn var(--duration-fast) var(--ease-out)}.modal-content{background:var(--card);border:1px solid var(--border-warm);border-radius:var(--radius-lg);padding:28px;width:440px;max-width:90vw;box-shadow:var(--shadow-float),0 0 60px #d4a5740d;animation:modalIn var(--duration-normal) var(--ease-out)}.modal-header{font-family:var(--font-display);font-size:1.15rem;font-weight:500;margin-bottom:18px;color:var(--text-primary);letter-spacing:-.01em}.modal-textarea{width:100%;background:var(--ink);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);padding:14px;color:var(--text-primary);font-family:var(--font-body);font-size:.95rem;line-height:1.6;resize:vertical;outline:none;transition:border-color var(--duration-fast) var(--ease-out)}.modal-textarea:focus{border-color:var(--border-focus)}.modal-textarea::placeholder{color:var(--text-muted);font-style:italic}.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:18px}.modal-btn{padding:8px 20px;border-radius:var(--radius-sm);border:none;cursor:pointer;font-family:var(--font-body);font-weight:600;font-size:.88rem;transition:all var(--duration-fast) var(--ease-out)}.modal-btn-cancel{background:transparent;color:var(--text-secondary);border:1px solid var(--border-subtle)}.modal-btn-cancel:hover{border-color:var(--border-warm);color:var(--text-primary)}.modal-btn-confirm{background:var(--text-accent);color:var(--ink)}.modal-btn-confirm:hover{background:#ddb07e;box-shadow:0 0 20px #d4a57433}.modal-btn-confirm:disabled{opacity:.3;cursor:not-allowed;box-shadow:none}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes modalIn{0%{opacity:0;transform:translateY(12px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}.markdown-preview{width:100%;max-width:760px;min-height:100%;background:var(--card);border-radius:var(--radius-md);padding:48px 52px;box-shadow:var(--shadow-md);border:1px solid var(--border-subtle);white-space:pre-wrap;font-family:var(--font-mono);font-size:.88rem;line-height:1.7;color:var(--text-secondary)}[data-theme=light] .editor-workspace:before{background:radial-gradient(ellipse,rgba(154,107,58,.04) 0%,transparent 70%)}[data-theme=light] .app-header:after{background:linear-gradient(90deg,transparent,rgba(120,90,50,.15),transparent)}[data-theme=light] .sidebar:before{background:linear-gradient(180deg,rgba(120,90,50,.15),transparent 50%)}[data-theme=light] .modal-overlay{background:#0000004d}[data-theme=light] .ProseMirror span.comment-mark:hover{background-color:#8e44ad26}[data-theme=light] .modal-btn-confirm:hover{background:#b07d48}[data-theme=light] .ProseMirror:focus{box-shadow:var(--shadow-lg),0 0 40px #9a6b3a0d}