:root{--bg:#0d1117;--surface:#161b22;--card:#1e2430;--border:#30363d;--border-light:#45475a;--text:#cdd6f4;--text-secondary:#8b949e;--text-hint:#6e7681;--accent:#58a6ff;--success:#3fb950;--error:#f85149;--warning:#d29922;--radius:12px;--radius-sm:6px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;font-family:system-ui,Segoe UI,sans-serif;font-size:15px;line-height:1.6}#root{flex-direction:column;min-height:100vh;display:flex}a{color:var(--accent);text-decoration:none}h1,h2,h3{color:var(--text);margin-bottom:8px}.page{flex:1;max-width:900px;margin:0 auto;padding:32px 24px}.page-header{justify-content:space-between;align-items:center;gap:16px;margin-bottom:24px;display:flex}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;transition:border-color .15s}.card:hover{border-color:var(--border-light)}.card-link{color:inherit;margin-bottom:12px;text-decoration:none;display:block}.card-title{margin-bottom:4px;font-size:16px;font-weight:600}.card-desc{color:var(--text-secondary);font-size:13px}.modal{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);width:100%;max-width:480px;padding:28px}.modal-overlay{z-index:100;background:#0009;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.btn{border-radius:var(--radius-sm);cursor:pointer;border:none;justify-content:center;align-items:center;padding:10px 20px;font-family:inherit;font-size:14px;font-weight:600;transition:opacity .15s;display:inline-flex}.btn:hover{opacity:.85}.btn-primary{background:var(--accent);color:#fff}.btn-secondary{background:var(--card);color:var(--text);border:1px solid var(--border)}.btn-sm{padding:6px 14px;font-size:13px}.form-group{flex-direction:column;gap:6px;margin-bottom:16px;display:flex}.form-group label{color:var(--text-secondary);font-size:13px;font-weight:500}.input{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);outline:none;width:100%;padding:10px 14px;font-family:inherit;font-size:14px;transition:border-color .15s}.input:focus{border-color:var(--accent)}.header{background:var(--surface);border-bottom:1px solid var(--border);align-items:center;gap:24px;height:56px;padding:0 24px;display:flex}.header-nav{flex:1;gap:16px;display:flex}.header-nav a{color:var(--text-secondary);border-radius:var(--radius-sm);border:1px solid var(--border);padding:5px 12px;font-size:14px;font-weight:500;text-decoration:none;transition:border-color .15s,color .15s,background .15s}.header-nav a:hover{color:var(--text);border-color:var(--border-light);background:var(--card)}.header-nav a.active{color:var(--accent);border-color:var(--accent);background:#58a6ff14}.auth-page{justify-content:center;align-items:center;min-height:calc(100vh - 56px);padding:24px;display:flex}.auth-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);width:100%;max-width:420px;padding:32px}.error-msg{color:var(--error);margin-bottom:12px;font-size:13px}.btn-ghost{color:var(--text-secondary);border:1px solid var(--border);background:0 0}.tiptap{outline:none}.tiptap p{margin:0 0 8px}.tiptap p:last-child{margin-bottom:0}.tiptap h2{color:var(--text);margin:12px 0 6px;font-size:18px;font-weight:700}.tiptap h3{color:var(--text);margin:10px 0 4px;font-size:15px;font-weight:600}.tiptap strong{font-weight:700}.tiptap em{font-style:italic}.tiptap s{text-decoration:line-through}.tiptap code{color:var(--accent);background:#58a6ff1a;border-radius:4px;padding:1px 5px;font-family:monospace;font-size:13px}.tiptap blockquote{border-left:3px solid var(--accent);color:var(--text-secondary);margin:8px 0;padding:4px 12px}.tiptap ul,.tiptap ol{margin:6px 0;padding-left:20px}.tiptap li{margin:2px 0}.tiptap hr{border:none;border-top:1px solid var(--border);margin:12px 0}.tiptap a{color:var(--accent);text-decoration:underline}.tiptap p.is-editor-empty:first-child:before{content:attr(data-placeholder);color:var(--text-secondary);pointer-events:none;float:left;height:0}.rich-text p{margin:0 0 8px}.rich-text p:last-child{margin-bottom:0}.rich-text h2{margin:12px 0 6px;font-size:18px;font-weight:700}.rich-text h3{margin:10px 0 4px;font-size:15px;font-weight:600}.rich-text strong{font-weight:700}.rich-text em{font-style:italic}.rich-text s{text-decoration:line-through}.rich-text code{color:var(--accent);background:#58a6ff1a;border-radius:4px;padding:1px 5px;font-family:monospace;font-size:13px}.rich-text blockquote{border-left:3px solid var(--accent);color:var(--text-secondary);margin:8px 0;padding:4px 12px}.rich-text ul,.rich-text ol{margin:6px 0;padding-left:20px}.rich-text li{margin:2px 0}.rich-text hr{border:none;border-top:1px solid var(--border);margin:12px 0}.rich-text a{color:var(--accent);text-decoration:underline}