:root{--bg-primary: #0f0f0f;--bg-secondary: #1a1a1a;--bg-tertiary: #242424;--bg-hover: #2a2a2a;--text-primary: #ffffff;--text-secondary: #a0a0a0;--text-muted: #666666;--accent: #6366f1;--accent-hover: #4f46e5;--accent-glow: rgba(99, 102, 241, .2);--success: #22c55e;--warning: #f59e0b;--error: #ef4444;--border: #333333;--border-focus: #6366f1;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6}.app-container{display:flex;flex-direction:column;min-height:100vh}.header{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;background:var(--bg-secondary);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.header-left{display:flex;align-items:center;gap:12px}.header h1{font-size:20px;font-weight:600;color:var(--text-primary)}.header-right{display:flex;align-items:center;gap:16px}.save-status{font-size:13px;color:var(--text-secondary);padding:6px 12px;background:var(--bg-tertiary);border-radius:var(--radius-sm)}.save-status.unsaved{color:var(--warning);background:#f59e0b1a}.main-layout{display:flex;flex:1}.sidebar{width:220px;background:var(--bg-secondary);border-right:1px solid var(--border);padding:16px 0}.nav-item{display:flex;align-items:center;gap:10px;padding:12px 20px;color:var(--text-secondary);text-decoration:none;font-size:14px;transition:all .15s ease}.nav-item:hover{background:var(--bg-hover);color:var(--text-primary)}.nav-item.active{background:var(--accent-glow);color:var(--accent);border-right:2px solid var(--accent)}.content{flex:1;padding:32px;max-width:900px}.page-title{font-size:24px;font-weight:600;margin-bottom:24px}.form-group{margin-bottom:24px}.form-label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:8px}.form-input,.form-select,.form-textarea{width:100%;padding:12px 14px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);font-size:14px;font-family:inherit;transition:border-color .15s ease}.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--border-focus);box-shadow:0 0 0 3px var(--accent-glow)}.form-textarea{min-height:200px;resize:vertical}.form-textarea.tall{min-height:300px}.trusted-computer-option{display:flex;align-items:flex-start;gap:10px;margin:-4px 0 20px;color:var(--text-secondary);font-size:13px;cursor:pointer}.trusted-computer-option input{width:16px;height:16px;margin-top:3px;accent-color:var(--accent)}.trusted-computer-option span,.trusted-computer-option small{display:block}.trusted-computer-option strong{color:var(--text-primary);font-weight:500}.trusted-computer-option small{margin-top:2px;color:var(--text-muted);line-height:1.4}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;font-size:14px;font-weight:500;border-radius:var(--radius-md);cursor:pointer;transition:all .15s ease;border:none}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover{background:var(--bg-hover)}.btn-danger{background:var(--error);color:#fff}.card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;margin-bottom:16px}.guidance-grid{display:grid;grid-template-columns:minmax(220px,.8fr) minmax(360px,2fr);gap:16px}@media (max-width: 760px){.guidance-grid{grid-template-columns:1fr}}.toggle-container{display:flex;align-items:center;gap:12px}.toggle{position:relative;width:44px;height:24px;background:var(--bg-tertiary);border-radius:12px;cursor:pointer;transition:background .2s ease}.toggle.active{background:var(--accent)}.toggle:after{content:"";position:absolute;top:2px;left:2px;width:20px;height:20px;background:#fff;border-radius:50%;transition:transform .2s ease}.toggle.active:after{transform:translate(20px)}.knowledge-list{display:flex;flex-direction:column;gap:8px}.knowledge-item{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--bg-tertiary);border-radius:var(--radius-md)}.knowledge-item-title{font-weight:500}.knowledge-item-meta{font-size:12px;color:var(--text-muted)}.dropzone{border:2px dashed var(--border);border-radius:var(--radius-lg);padding:40px;text-align:center;cursor:pointer;transition:all .2s ease}.dropzone:hover{border-color:var(--accent);background:var(--accent-glow)}.dropzone-text{color:var(--text-secondary);font-size:14px}