:root{--primary-color: #1a73e8;--bg-color: #f8f9fa;--sidebar-bg: #ffffff;--text-color: #202124;--text-secondary: #666666;--border-color: #dadce0;--card-bg: #ffffff;--hover-bg: #f1f3f4;--success-bg: #e6fffa;--error-bg: #fff5f5;--success-border: #38a169;--error-border: #e53e3e}body.dark-mode{--bg-color: #121212;--sidebar-bg: #1e1e1e;--text-color: #e8eaed;--text-secondary: #aaaaaa;--border-color: #3c4043;--card-bg: #2d2e31;--hover-bg: #3c4043;--success-bg: #1a3a3a;--error-bg: #3a1a1a;--success-border: #38a169;--error-border: #e53e3e}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-color);color:var(--text-color);transition:background-color .3s,color .3s}.app-container{display:flex;height:100vh;overflow:hidden}.sidebar{width:280px;background-color:var(--sidebar-bg);border-right:1px solid var(--border-color);display:flex;flex-direction:column;padding:1rem;overflow-y:auto}.sidebar h1{font-size:1.25rem;margin-bottom:1.5rem;display:flex;align-items:center;gap:.5rem}.nav-menu{display:flex;flex-direction:column;gap:.5rem}.nav-item{display:flex;align-items:center;gap:.75rem;padding:.75rem;border-radius:8px;cursor:pointer;transition:background .2s;border:none;background:none;text-align:left;font-size:1rem;color:var(--text-color);width:100%}.nav-item:hover{background-color:var(--hover-bg)}.nav-item.active{background-color:#e8f0fe;color:var(--primary-color);font-weight:500}body.dark-mode .nav-item.active{background-color:#1a73e833;color:#8ab4f8}.main-content{flex:1;overflow-y:auto;padding:2rem}.container{max-width:900px;margin:0 auto}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:500}input[type=text],textarea,select{width:100%;padding:.75rem;border:1px solid var(--border-color);border-radius:4px;font-size:1rem;background-color:var(--card-bg);color:var(--text-color)}textarea{resize:vertical;min-height:200px}.btn{padding:.75rem 1.5rem;border-radius:4px;font-weight:500;cursor:pointer;border:none;transition:opacity .2s;background-color:var(--hover-bg);color:var(--text-color)}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-danger{background-color:#d93025;color:#fff}.btn-icon{background:none;border:none;color:var(--text-color);cursor:pointer;padding:4px;border-radius:4px}.btn-icon:hover{background-color:var(--hover-bg)}.article-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1.25rem;margin-top:1.5rem}.article-card{background:var(--card-bg);padding:1.25rem;border:1px solid var(--border-color);border-radius:12px;cursor:pointer;transition:transform .2s,box-shadow .2s}.article-card:hover{transform:translateY(-2px);box-shadow:0 4px 20px #0000001a}body.dark-mode .article-card:hover{box-shadow:0 4px 20px #0006}.random-card{border-left:4px solid var(--primary-color);background:linear-gradient(to right,var(--card-bg),var(--bg-color))}.image-preview-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:1rem;margin-top:1rem}.image-preview-item{position:relative}.image-preview-item img{width:100%;height:100px;object-fit:cover;border-radius:4px}.drop-zone{border:2px dashed var(--border-color);border-radius:8px;padding:1.5rem;text-align:center;background-color:var(--bg-color);transition:all .2s ease;margin-top:.5rem;color:#666;cursor:pointer}.drop-zone.dragging{border-color:var(--primary-color);background-color:#e8f0fe;color:var(--primary-color)}.marker-tools{display:flex;gap:.5rem}.marker-btn{border:none;padding:2px 8px;border-radius:4px;cursor:pointer;font-size:.8rem;font-weight:700}.tag-container{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.5rem}.tag-chip{background-color:var(--hover-bg);padding:4px 10px;border-radius:16px;font-size:.85rem;display:flex;align-items:center;gap:4px;border:1px solid var(--border-color)}.tag-chip button{background:none;border:none;color:#888;cursor:pointer;font-size:1.1rem;padding:0;display:flex;align-items:center}.tag-chip button:hover{color:var(--primary-color)}.article-body h1,.article-body h2,.article-body h3{margin-top:1.5rem;margin-bottom:.75rem;color:var(--primary-color)}.article-body ul,.article-body ol{padding-left:1.5rem;margin-bottom:1rem}.article-body p{margin-bottom:1rem;white-space:pre-wrap}.article-body blockquote{border-left:4px solid var(--border-color);padding-left:1rem;margin-left:0;color:#666;font-style:italic}.article-body img{max-width:100%;height:auto;border-radius:8px;margin:1rem 0}.article-body code{background-color:var(--hover-bg);padding:.2rem .4rem;border-radius:4px;font-family:monospace}.article-body pre{background-color:var(--hover-bg);padding:1rem;border-radius:8px;overflow-x:auto;margin:1rem 0}.article-body pre code{padding:0;background-color:transparent}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}.stat-card{background:var(--card-bg);padding:1.5rem;border-radius:8px;text-align:center;border:1px solid var(--border-color)}.stat-value{font-size:1.5rem;font-weight:700;color:var(--primary-color)}.setup-guide{background:var(--card-bg);padding:2rem;border-radius:8px;box-shadow:0 2px 10px #0000000d;max-width:800px;margin:0 auto}body.dark-mode .setup-guide{box-shadow:0 4px 20px #0000004d}.setup-step{margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--border-color)}.setup-step h3{margin-bottom:1rem;color:var(--primary-color)}.setup-list{margin-left:1.5rem;margin-top:.5rem;list-style-type:decimal}.setup-list li{margin-bottom:.75rem}.setup-sub-list{margin-left:1.5rem;margin-top:.5rem;list-style-type:circle}.code-block{background:#f4f4f4;padding:12px 15px;border-radius:4px;font-family:monospace;margin:10px 0;border:1px solid #ddd;word-break:break-all;-webkit-user-select:all;user-select:all;color:#333}body.dark-mode .code-block{background:#1e1e1e;border-color:var(--border-color);color:var(--text-color)}.link{color:#0078d4;text-decoration:none;font-weight:700;display:inline-flex;align-items:center;gap:4px}.ai-suggestions-grid{display:flex;flex-wrap:wrap;gap:.75rem}.suggestion-chip{background:var(--card-bg);border:1px solid var(--border-color);padding:8px 16px;border-radius:20px;cursor:pointer;display:flex;align-items:center;gap:8px;font-size:.95rem;transition:all .2s;color:var(--text-color)}.suggestion-chip:hover{border-color:#8e44ad;background:#fdf0ff;transform:translateY(-2px);color:#8e44ad}body.dark-mode .suggestion-chip:hover{background:#2d1a36;border-color:#a29bfe;color:#a29bfe}.alert-box{background-color:#fff3cd;border:1px solid #ffeeba;color:#856404;padding:1rem;border-radius:8px;font-size:.9rem;line-height:1.5}body.dark-mode .alert-box{background-color:#2c2512;border-color:#453d11;color:#e2c044}.animate-pulse{animation:pulse 2s cubic-bezier(.4,0,.6,1) infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.setup-guide h4{margin-top:1.5rem;margin-bottom:.5rem;color:var(--primary-color)}