:root{--color-bg-primary: #ffffff;--color-bg-secondary: #f8fafc;--color-bg-tertiary: #f1f5f9;--color-bg-elevated: #ffffff;--color-bg-overlay: rgba(0, 0, 0, .5);--color-text-primary: #0f172a;--color-text-secondary: #475569;--color-text-tertiary: #94a3b8;--color-text-inverse: #ffffff;--color-border: #e2e8f0;--color-border-hover: #cbd5e1;--color-accent: #6366f1;--color-accent-hover: #4f46e5;--color-accent-light: rgba(99, 102, 241, .1);--color-success: #10b981;--color-success-light: rgba(16, 185, 129, .1);--color-warning: #f59e0b;--color-warning-light: rgba(245, 158, 11, .1);--color-error: #ef4444;--color-error-light: rgba(239, 68, 68, .1);--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", Consolas, monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 2rem;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--header-height: 60px;--sidebar-width: 280px;--content-max-width: 900px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1);--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--transition-fast: .15s ease;--transition-normal: .2s ease;--transition-slow: .3s ease}[data-theme=dark]{--color-bg-primary: #0f172a;--color-bg-secondary: #1e293b;--color-bg-tertiary: #334155;--color-bg-elevated: #1e293b;--color-bg-overlay: rgba(0, 0, 0, .7);--color-text-primary: #f1f5f9;--color-text-secondary: #94a3b8;--color-text-tertiary: #64748b;--color-text-inverse: #0f172a;--color-border: #334155;--color-border-hover: #475569;--color-accent-light: rgba(99, 102, 241, .2);--color-success-light: rgba(16, 185, 129, .2);--color-warning-light: rgba(245, 158, 11, .2);--color-error-light: rgba(239, 68, 68, .2)}*,*:before,*:after{box-sizing:border-box}*{margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-sans);font-size:var(--text-base);line-height:1.6;color:var(--color-text-primary);background:var(--color-bg-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:var(--color-accent);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-accent-hover)}button{font-family:inherit;cursor:pointer;border:none;background:none}img{max-width:100%;display:block}kbd{display:inline-flex;align-items:center;justify-content:center;min-width:1.5em;padding:.125em .375em;font-family:var(--font-sans);font-size:var(--text-xs);font-weight:500;color:var(--color-text-secondary);background:var(--color-bg-tertiary);border:1px solid var(--color-border);border-radius:var(--radius-sm)}.auth-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--color-bg-secondary) 0%,var(--color-bg-primary) 100%)}.auth-container{text-align:center;padding:var(--space-10)}.auth-logo{margin-bottom:var(--space-6);animation:float 3s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.auth-container h1{font-size:var(--text-3xl);font-weight:700;margin-bottom:var(--space-2);background:linear-gradient(135deg,var(--color-accent) 0%,#8b5cf6 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.auth-subtitle{color:var(--color-text-secondary);font-size:var(--text-lg);margin-bottom:var(--space-8)}.btn-primary{display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-4) var(--space-6);background:var(--color-accent);color:var(--color-text-inverse);font-size:var(--text-base);font-weight:600;border-radius:var(--radius-lg);transition:all var(--transition-normal);box-shadow:var(--shadow-md)}.btn-primary:hover{background:var(--color-accent-hover);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-secondary{padding:var(--space-3) var(--space-5);color:var(--color-text-secondary);font-size:var(--text-sm);font-weight:500;border:1px solid var(--color-border);border-radius:var(--radius-md);transition:all var(--transition-fast)}.btn-secondary:hover{background:var(--color-bg-tertiary);border-color:var(--color-border-hover)}.auth-note{margin-top:var(--space-4);font-size:var(--text-sm);color:var(--color-text-tertiary)}.modal{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:var(--color-bg-overlay);z-index:1000;animation:fadeIn var(--transition-fast)}.modal.hidden{display:none}@keyframes 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spin{to{transform:rotate(360deg)}}.auth-status{font-size:var(--text-sm);color:var(--color-text-secondary);margin-bottom:var(--space-4)}.header{position:fixed;top:0;left:0;right:0;height:var(--header-height);display:flex;align-items:center;justify-content:space-between;padding:0 var(--space-4);background:var(--color-bg-elevated);border-bottom:1px solid var(--color-border);z-index:100;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.header-left,.header-right{display:flex;align-items:center;gap:var(--space-3)}.sidebar-toggle{display:none;padding:var(--space-2);color:var(--color-text-secondary);border-radius:var(--radius-md);transition:all var(--transition-fast)}.sidebar-toggle:hover{background:var(--color-bg-tertiary);color:var(--color-text-primary)}.logo{display:flex;align-items:center;gap:var(--space-2);font-weight:600;color:var(--color-text-primary)}.logo:hover{color:var(--color-text-primary)}.header-center{flex:1;display:flex;justify-content:center;padding:0 var(--space-6)}.search-btn{display:flex;align-items:center;gap:var(--space-3);width:100%;max-width:400px;padding:var(--space-2) var(--space-4);background:var(--color-bg-secondary);color:var(--color-text-tertiary);border:1px solid var(--color-border);border-radius:var(--radius-lg);transition:all var(--transition-fast)}.search-btn:hover{border-color:var(--color-border-hover);background:var(--color-bg-tertiary)}.search-btn span{flex:1;text-align:left}.icon-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;color:var(--color-text-secondary);border-radius:var(--radius-md);transition:all var(--transition-fast)}.icon-btn:hover{background:var(--color-bg-tertiary);color:var(--color-text-primary)}.user-menu{position:relative}.user-btn{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-1) var(--space-3) var(--space-1) var(--space-1);border-radius:var(--radius-lg);transition:all var(--transition-fast)}.user-btn:hover{background:var(--color-bg-tertiary)}.user-avatar{width:28px;height:28px;border-radius:50%}.user-dropdown{position:absolute;top:100%;right:0;margin-top:var(--space-2);background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);overflow:hidden;min-width:150px}.user-dropdown.hidden{display:none}.user-dropdown a{display:block;padding:var(--space-3) var(--space-4);color:var(--color-text-primary);font-size:var(--text-sm);transition:background var(--transition-fast)}.user-dropdown a:hover{background:var(--color-bg-tertiary)}.search-modal{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;align-items:flex-start;justify-content:center;padding-top:15vh;background:var(--color-bg-overlay);z-index:200;animation:fadeIn var(--transition-fast)}.search-modal.hidden{display:none}.search-modal-content{width:100%;max-width:600px;background:var(--color-bg-elevated);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);overflow:hidden;animation:slideUp var(--transition-normal)}.search-input-container{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-4);border-bottom:1px solid var(--color-border)}.search-input-container svg{color:var(--color-text-tertiary);flex-shrink:0}#search-input{flex:1;border:none;background:none;font-size:var(--text-lg);color:var(--color-text-primary);outline:none}#search-input::placeholder{color:var(--color-text-tertiary)}.search-results{max-height:400px;overflow-y:auto}.search-result-item{display:block;padding:var(--space-4);border-bottom:1px solid var(--color-border);transition:background var(--transition-fast)}.search-result-item:hover{background:var(--color-bg-tertiary)}.search-result-item:last-child{border-bottom:none}.search-result-title{font-weight:600;margin-bottom:var(--space-1);color:var(--color-text-primary)}.search-result-path{font-size:var(--text-sm);color:var(--color-text-tertiary);margin-bottom:var(--space-2)}.search-result-snippet{font-size:var(--text-sm);color:var(--color-text-secondary);line-height:1.4}.search-result-snippet mark{background:var(--color-warning-light);color:var(--color-text-primary);padding:0 2px;border-radius:2px}.search-empty{padding:var(--space-8);text-align:center;color:var(--color-text-tertiary)}.main-app.hidden{display:none}.layout{display:flex;min-height:100vh;padding-top:var(--header-height)}.sidebar{position:fixed;top:var(--header-height);left:0;bottom:0;width:var(--sidebar-width);background:var(--color-bg-secondary);border-right:1px solid var(--color-border);display:flex;flex-direction:column;overflow-y:auto;transition:transform var(--transition-normal)}.sidebar-nav{flex:1;padding:var(--space-4)}.sidebar-section{margin-bottom:var(--space-4)}.sidebar-section-title{display:flex;align-items:center;justify-content:space-between;padding:var(--space-2);font-size:var(--text-sm);font-weight:600;color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.05em;cursor:pointer;border-radius:var(--radius-md);transition:all var(--transition-fast)}.sidebar-section-title:hover{background:var(--color-bg-tertiary)}.sidebar-section-icon{transition:transform var(--transition-fast)}.sidebar-section.collapsed .sidebar-section-icon{transform:rotate(-90deg)}.sidebar-section.collapsed .sidebar-section-items{display:none}.sidebar-section-items{margin-left:var(--space-2)}.sidebar-link{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-3);font-size:var(--text-sm);color:var(--color-text-secondary);border-radius:var(--radius-md);transition:all 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var(--color-border);text-align:left}.markdown-body th{background:var(--color-bg-secondary);font-weight:600}.markdown-body tr:nth-child(2n){background:var(--color-bg-secondary)}.markdown-body hr{margin:var(--space-8) 0;border:none;border-top:1px solid var(--color-border)}.markdown-body a{text-decoration:underline;text-underline-offset:2px}.markdown-body img{max-width:100%;border-radius:var(--radius-md);margin:var(--space-4) 0}.markdown-body .task-item{display:flex;align-items:flex-start;gap:var(--space-3);list-style:none;margin-left:calc(-1 * var(--space-6))}.markdown-body .task-checkbox{width:18px;height:18px;margin-top:3px;cursor:pointer;accent-color:var(--color-accent);flex-shrink:0}.markdown-body .task-checkbox:hover{transform:scale(1.1)}.markdown-body .task-item.completed{color:var(--color-text-tertiary);text-decoration:line-through}.markdown-body .alert{padding:var(--space-4);margin:var(--space-4) 0;border-radius:var(--radius-md);border-left:4px solid}.markdown-body .alert-note{background:var(--color-accent-light);border-color:var(--color-accent)}.markdown-body .alert-tip{background:var(--color-success-light);border-color:var(--color-success)}.markdown-body .alert-important,.markdown-body .alert-warning{background:var(--color-warning-light);border-color:var(--color-warning)}.markdown-body .alert-caution{background:var(--color-error-light);border-color:var(--color-error)}.markdown-body .alert-title{font-weight:600;margin-bottom:var(--space-2);display:flex;align-items:center;gap:var(--space-2)}.task-dashboard{display:grid;gap:var(--space-6)}.task-section{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden}.task-section-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-4);border-bottom:1px solid var(--color-border);background:var(--color-bg-tertiary)}.task-section-title{font-weight:600;display:flex;align-items:center;gap:var(--space-2)}.task-progress{display:flex;align-items:center;gap:var(--space-3);font-size:var(--text-sm);color:var(--color-text-secondary)}.task-progress-bar{width:100px;height:6px;background:var(--color-border);border-radius:3px;overflow:hidden}.task-progress-fill{height:100%;background:var(--color-success);border-radius:3px;transition:width var(--transition-normal)}.task-section-body{padding:var(--space-4)}.task-phase{margin-bottom:var(--space-4)}.task-phase:last-child{margin-bottom:0}.task-phase-title{font-size:var(--text-sm);font-weight:600;color:var(--color-text-secondary);margin-bottom:var(--space-2)}.task-list{list-style:none}.task-list-item{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-2) 0;font-size:var(--text-sm);color:var(--color-text-secondary)}.task-list-item input{cursor:pointer;accent-color:var(--color-accent)}.task-list-item.completed{color:var(--color-text-tertiary);text-decoration:line-through}@media (max-width: 1024px){.sidebar-toggle{display:flex}.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0);box-shadow:var(--shadow-xl)}.content{margin-left:0;max-width:100%}}@media (max-width: 640px){.header-center{display:none}.search-modal-content{margin:0 var(--space-4);max-height:80vh}.content{padding:var(--space-4)}.user-btn span{display:none}}.hidden{display:none!important}.sun-icon,.moon-icon{transition:opacity var(--transition-fast)}[data-theme=dark] .sun-icon{display:none}[data-theme=dark] .moon-icon{display:block}[data-theme=light] .moon-icon{display:none}