:root{--bg-primary: #0d0f17;--bg-secondary: #12151f;--bg-card: #1a1f2e;--bg-hover: #1f2538;--bg-input: #141824;--border: #2a2f45;--border-light: #363d57;--accent: #6c63ff;--accent-h: #7c74ff;--accent2: #00d4aa;--accent3: #ff6b9d;--accent4: #ffa94d;--t1: #edf2ff;--t2: #8892b0;--t3: #4a5568;--sidebar-w: 260px;--r: 12px;--rs: 8px;--shadow: 0 4px 24px rgba(0, 0, 0, .4);--tr: .2s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:Inter,sans-serif;background:var(--bg-primary);color:var(--t1);min-height:100vh;overflow-x:hidden}::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.app-layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-w);min-height:100vh;background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100;transition:transform var(--tr)}.sidebar.collapsed{transform:translate(calc(-1 * var(--sidebar-w)))}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:18px 14px;border-bottom:1px solid var(--border)}.logo{display:flex;align-items:center;gap:10px}.logo-icon{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--accent),var(--accent2));display:flex;align-items:center;justify-content:center;font-size:15px;color:#fff;box-shadow:0 0 18px #6c63ff66}.logo-text{font-size:17px;font-weight:700}.logo-kna{color:var(--accent)}.logo-tools{color:var(--t1)}.sidebar-toggle{background:none;border:none;color:var(--t2);cursor:pointer;font-size:15px;padding:4px;transition:color var(--tr)}.sidebar-toggle:hover{color:var(--t1)}.search-wrap{padding:10px 10px 6px}.search-box{display:flex;align-items:center;gap:7px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--rs);padding:7px 11px;transition:border-color 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var(--tr)}.snippet-item:last-child{border-bottom:none}.snippet-item:hover{background:var(--bg-hover)}.snippet-meta{display:flex;flex-direction:column;gap:2px;flex:1;min-width:0}.snippet-label{font-size:13px;font-weight:600;color:var(--t1);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.snippet-date{font-size:11px;color:var(--t3)}.snippet-actions{display:flex;gap:5px;flex-shrink:0}.icon-indigo{background:linear-gradient(135deg,#4f46e5,#7c3aed)}.md-workspace{display:grid;gap:14px;margin-top:4px}.md-workspace.mode-split{grid-template-columns:1fr 1fr}.md-workspace.mode-edit,.md-workspace.mode-preview{grid-template-columns:1fr}.md-editor-pane,.md-preview-pane{display:flex;flex-direction:column;gap:6px}.md-pane-label{font-size:11px;font-weight:600;color:var(--t3);text-transform:uppercase;letter-spacing:.05em}.md-render{background:var(--bg-input);border:1px solid var(--border);border-radius:var(--rs);padding:16px 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