*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-tertiary: #1a1a2e;--bg-card: #16162480;--surface: #1e1e30;--border: #2a2a42;--border-glow: #5b4fc8;--text-primary: #e8e6f0;--text-secondary: #9d9bb0;--text-muted: #6b698a;--accent: #7c6ff7;--accent-bright: #9b8eff;--accent-dim: #5b4fc840;--user-bg: linear-gradient(135deg, #5b4fc8 0%, #7c6ff7 100%);--assistant-bg: #16162480;--success: #4ade80;--warning: #fbbf24;--danger: #f87171;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--font-serif: "Lora", "Georgia", serif;--radius: 12px;--radius-sm: 8px;--radius-lg: 16px;--shadow: 0 4px 24px rgba(0,0,0,.4);--shadow-glow: 0 0 30px rgba(123,111,247,.15)}html,body{height:100%;font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased}#app{display:flex;flex-direction:column;height:100vh}#header{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;background:var(--bg-secondary);border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);position:sticky;top:0;z-index:10}.header-left{display:flex;align-items:center;gap:12px}.logo{display:flex;align-items:center;gap:10px}.logo-icon{font-size:24px;color:var(--accent);text-shadow:0 0 12px var(--accent-dim)}.logo h1{font-size:18px;font-weight:600;letter-spacing:-.02em;background:linear-gradient(135deg,var(--text-primary),var(--accent-bright));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.badge{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);background:var(--accent-dim);padding:3px 8px;border-radius:4px;border:1px solid rgba(123,111,247,.2)}.header-center{display:flex;align-items:center}.view-toggle{display:flex;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:10px;padding:3px;gap:2px}.view-btn{display:flex;align-items:center;gap:6px;font-family:var(--font-sans);font-size:13px;font-weight:500;color:var(--text-muted);background:transparent;border:none;border-radius:8px;padding:7px 16px;cursor:pointer;transition:all .25s ease;white-space:nowrap}.view-btn:hover{color:var(--text-secondary);background:#7b6ff70d}.view-btn.active{color:#fff;background:var(--accent);box-shadow:0 2px 12px #7b6ff74d}.view-btn svg{flex-shrink:0}.header-right{display:flex;align-items:center;gap:12px}.model-selector{display:flex;align-items:center;gap:8px}.model-selector label{font-size:11px;font-weight:500;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted)}#model-select{font-family:var(--font-sans);font-size:13px;font-weight:500;color:var(--text-primary);background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-sm);padding:6px 28px 6px 10px;cursor:pointer;outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239d9bb0' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 8px center;transition:border-color .2s,box-shadow .2s}#model-select:hover{border-color:var(--accent)}#model-select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-dim)}#clear-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;background:transparent;border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;transition:all .2s}#clear-btn:hover{background:var(--bg-tertiary);color:var(--danger);border-color:var(--danger)}.view-panel{display:none;flex:1;min-height:0}.view-panel.active{display:flex;flex-direction:column}#chat-view{max-width:900px;margin:0 auto;width:100%}#chat-container{flex:1;overflow-y:auto;padding:20px;scroll-behavior:smooth}#chat-container::-webkit-scrollbar{width:6px}#chat-container::-webkit-scrollbar-track{background:transparent}#chat-container::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.message{display:flex;gap:14px;margin-bottom:24px;animation:messageIn .3s ease-out}@keyframes messageIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.message-avatar{flex-shrink:0;width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600}.assistant-message .message-avatar{background:var(--accent-dim);color:var(--accent-bright);border:1px solid rgba(123,111,247,.2)}.user-message .message-avatar{background:var(--user-bg);color:#fff}.message-content{flex:1;min-width:0}.message-text{font-size:14.5px;line-height:1.7;color:var(--text-primary)}.message-text p{margin-bottom:10px}.message-text p:last-child{margin-bottom:0}.message-text h2{font-size:20px;font-weight:600;margin-bottom:8px;background:linear-gradient(135deg,var(--text-primary),var(--accent-bright));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.message-text strong{color:var(--accent-bright);font-weight:600}.message-text code{font-family:var(--font-mono);font-size:13px;background:var(--bg-tertiary);padding:2px 6px;border-radius:4px;border:1px solid var(--border)}.message-text blockquote{border-left:3px solid var(--accent);padding:8px 16px;margin:12px 0;background:var(--accent-dim);border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-style:italic;color:var(--text-secondary)}.message-text ul,.message-text ol{margin:8px 0;padding-left:20px}.message-text li{margin-bottom:4px}.user-message .message-text{background:var(--bg-tertiary);padding:12px 16px;border-radius:var(--radius) var(--radius) var(--radius) 4px;border:1px solid var(--border)}.sources{margin-top:12px}.sources-toggle{font-size:12px;font-weight:500;color:var(--text-muted);background:none;border:none;cursor:pointer;display:flex;align-items:center;gap:6px;padding:4px 0;transition:color .2s}.sources-toggle:hover{color:var(--accent)}.sources-toggle svg{transition:transform .2s}.sources-toggle.open svg{transform:rotate(180deg)}.sources-list{display:none;margin-top:8px;padding:10px 14px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-sm)}.sources-list.open{display:block}.source-item{font-size:12px;color:var(--text-secondary);padding:4px 0;display:flex;align-items:center;gap:8px}.source-item .score{font-family:var(--font-mono);font-size:11px;color:var(--success);background:#4ade801a;padding:1px 6px;border-radius:4px}.model-badge{display:inline-block;font-size:11px;font-weight:500;color:var(--text-muted);margin-top:8px}.suggestion-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:8px;margin-top:16px}.suggestion{font-family:var(--font-sans);font-size:13px;font-weight:500;color:var(--text-secondary);background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 14px;cursor:pointer;text-align:left;transition:all .2s}.suggestion:hover{color:var(--accent-bright);border-color:var(--accent);background:var(--accent-dim);transform:translateY(-1px)}.loading-dots{display:flex;gap:4px;padding:8px 0}.loading-dots span{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:dotPulse 1.4s infinite ease-in-out}.loading-dots span:nth-child(2){animation-delay:.2s}.loading-dots span:nth-child(3){animation-delay:.4s}@keyframes dotPulse{0%,80%,to{opacity:.3;transform:scale(.8)}40%{opacity:1;transform:scale(1)}}#input-area{padding:16px 20px;background:var(--bg-secondary);border-top:1px solid var(--border)}.input-wrapper{display:flex;align-items:flex-end;gap:10px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius);padding:6px 6px 6px 16px;transition:border-color .2s,box-shadow .2s}.input-wrapper:focus-within{border-color:var(--accent);box-shadow:var(--shadow-glow)}#user-input{flex:1;font-family:var(--font-sans);font-size:14.5px;color:var(--text-primary);background:transparent;border:none;outline:none;resize:none;min-height:24px;max-height:120px;padding:8px 0;line-height:1.5}#user-input::placeholder{color:var(--text-muted)}#send-btn{display:flex;align-items:center;justify-content:center;width:40px;height:40px;background:var(--accent);border:none;border-radius:var(--radius-sm);color:#fff;cursor:pointer;flex-shrink:0;transition:all .2s}#send-btn:hover{background:var(--accent-bright);box-shadow:0 0 16px var(--accent-dim)}#send-btn:disabled{opacity:.4;cursor:not-allowed}.disclaimer{font-size:11px;color:var(--text-muted);text-align:center;margin-top:8px}#current-model-label{color:var(--accent);font-weight:500}.error-text{color:var(--danger);background:#f871711a;padding:10px 14px;border-radius:var(--radius-sm);border:1px solid rgba(248,113,113,.2);font-size:13px}#reader-view{position:relative}#reader-view.active{display:flex;flex-direction:column}#reader-progress-bar{position:absolute;top:0;left:0;height:3px;width:0%;background:linear-gradient(90deg,var(--accent),var(--accent-bright),#c4b5fd);border-radius:0 2px 2px 0;transition:width .15s ease-out;z-index:5;box-shadow:0 0 10px #7b6ff766}#reader-layout{display:flex;flex:1;min-height:0;position:relative}#toc-toggle{display:none;position:fixed;bottom:24px;right:24px;width:48px;height:48px;background:var(--accent);border:none;border-radius:50%;color:#fff;cursor:pointer;z-index:20;align-items:center;justify-content:center;box-shadow:0 4px 20px #7b6ff766;transition:transform .2s,box-shadow .2s}#toc-toggle:hover{transform:scale(1.08);box-shadow:0 6px 28px #7b6ff780}#reader-sidebar{width:280px;flex-shrink:0;background:#12121ad9;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden;transition:width .3s ease}.sidebar-header{padding:20px 20px 12px;border-bottom:1px solid var(--border)}.sidebar-header h3{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted)}#toc-list{flex:1;overflow-y:auto;padding:8px 10px 20px}#toc-list::-webkit-scrollbar{width:4px}#toc-list::-webkit-scrollbar-track{background:transparent}#toc-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}.toc-item{display:block;font-size:13px;font-weight:400;color:var(--text-secondary);text-decoration:none;padding:9px 14px;border-radius:8px;margin-bottom:2px;cursor:pointer;transition:all .2s ease;border-left:2px solid transparent;line-height:1.4}.toc-item:hover{color:var(--text-primary);background:#7b6ff70f;border-left-color:#7b6ff74d}.toc-item.active{color:var(--accent-bright);font-weight:500;background:#7b6ff71a;border-left-color:var(--accent);box-shadow:inset 0 0 0 1px #7b6ff71a}#reader-content{flex:1;overflow-y:auto;padding:40px 60px 80px;scroll-behavior:smooth;min-width:0}#reader-content::-webkit-scrollbar{width:6px}#reader-content::-webkit-scrollbar-track{background:transparent}#reader-content::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.reader-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;height:300px;color:var(--text-muted);gap:16px}.reader-placeholder p{font-size:14px}.reader-error{color:var(--danger);background:#f871711a;padding:16px 20px;border-radius:var(--radius);border:1px solid rgba(248,113,113,.2);font-size:14px;max-width:600px}.fw-section{margin-bottom:48px;padding-bottom:48px;border-bottom:1px solid var(--border);animation:sectionFadeIn .4s ease-out}.fw-section:last-child{border-bottom:none}@keyframes sectionFadeIn{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.fw-section-title{font-family:var(--font-serif);font-size:28px;font-weight:600;color:var(--text-primary);margin-bottom:28px;padding-bottom:16px;border-bottom:2px solid var(--accent-dim);background:linear-gradient(135deg,var(--text-primary) 0%,var(--accent-bright) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;line-height:1.3;letter-spacing:-.01em}.fw-section-content{font-size:15.5px;line-height:1.85;color:var(--text-secondary);max-width:720px}.fw-section-content p{margin-bottom:18px}.fw-section-content p:last-child{margin-bottom:0}.fw-section-content strong{color:var(--accent-bright);font-weight:600}.fw-section-content em{color:var(--text-primary);font-style:italic}.fw-section-content code{font-family:var(--font-mono);font-size:13px;background:var(--bg-tertiary);padding:2px 6px;border-radius:4px;border:1px solid var(--border);color:var(--accent-bright)}.fw-section-content blockquote{border-left:3px solid var(--accent);padding:14px 20px;margin:20px 0;background:#5b4fc80f;border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-family:var(--font-serif);font-style:italic;color:var(--text-primary);font-size:15px;line-height:1.7}.fw-subheading{font-family:var(--font-serif);font-size:20px;font-weight:500;color:var(--text-primary);margin:32px 0 16px;line-height:1.4}.fw-subheading .fw-num{color:var(--accent);font-weight:600;margin-right:4px}@media(max-width:900px){#reader-content{padding:28px 28px 60px}.fw-section-title{font-size:24px}.fw-section-content{font-size:15px}}@media(max-width:640px){#header{flex-wrap:wrap;gap:10px;padding:12px 14px}.header-left{flex:1}.header-center{order:3;width:100%}.view-toggle{width:100%}.view-btn{flex:1;justify-content:center}.header-right{gap:8px}.model-selector label{display:none}.suggestion-grid{grid-template-columns:1fr}#reader-sidebar{position:fixed;top:0;left:0;bottom:0;width:280px;z-index:30;transform:translate(-100%);transition:transform .3s ease;box-shadow:4px 0 30px #00000080}#reader-sidebar.open{transform:translate(0)}#toc-toggle{display:flex}#reader-content{padding:20px 16px 60px}.fw-section-title{font-size:22px}.fw-section-content{font-size:14.5px;line-height:1.75}}