.icon{font-family:Material Symbols Rounded;font-weight:400;font-style:normal;font-size:20px;line-height:1;letter-spacing:normal;text-transform:none;display:inline-block;white-space:nowrap;word-wrap:normal;direction:ltr;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;font-feature-settings:"liga";font-variation-settings:"FILL" 0,"wght" 400,"GRAD" 0,"opsz" 20;flex-shrink:0}.icon-sm{font-size:16px;font-variation-settings:"FILL" 0,"wght" 400,"GRAD" 0,"opsz" 16}.icon-md{font-size:20px}.icon-lg{font-size:24px}.icon-xl{font-size:32px;font-variation-settings:"FILL" 0,"wght" 400,"GRAD" 0,"opsz" 32}.icon-filled{font-variation-settings:"FILL" 1,"wght" 400,"GRAD" 0,"opsz" 20}:root{--color-bg-primary:#ffffff;--color-bg-secondary:#f8fafc;--color-bg-tertiary:#f1f5f9;--color-bg-chat:#fafbfc;--color-bg-sidebar:#ffffff;--color-bg-hover:rgba(0,0,0,0.04);--color-bg-active:rgba(99,102,241,0.08);--color-bg-glass:rgba(255,255,255,0.85);--color-bg-glass-heavy:rgba(255,255,255,0.95);--color-bg-input:#ffffff;--color-text-primary:#0f172a;--color-text-secondary:#475569;--color-text-tertiary:#94a3b8;--color-text-inverse:#ffffff;--color-border:#e2e8f0;--color-border-light:#f1f5f9;--color-border-focus:#6366f1;--color-accent:#6366f1;--color-accent-hover:#4f46e5;--color-accent-light:rgba(99,102,241,0.1);--color-accent-gradient:linear-gradient(135deg,#6366f1,#8b5cf6 50%,#a855f7);--color-accent-glow:0 0 20px rgba(99,102,241,0.3);--color-success:#10b981;--color-warning:#f59e0b;--color-error:#ef4444;--color-info:#3b82f6;--color-msg-user:linear-gradient(135deg,#6366f1,#7c3aed);--color-msg-ai:#ffffff;--color-msg-ai-border:#e2e8f0;--sidebar-width:280px;--sidebar-collapsed:68px;--header-height:56px;--input-max-width:768px;--chat-max-width:840px;--font-sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--font-mono:"JetBrains Mono","Fira Code","SF Mono",monospace;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:20px;--radius-full:9999px;--shadow-xs:0 1px 2px rgba(0,0,0,0.04);--shadow-sm:0 1px 3px rgba(0,0,0,0.06),0 1px 2px rgba(0,0,0,0.04);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.07),0 2px 4px -2px rgba(0,0,0,0.05);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.08),0 4px 6px -4px rgba(0,0,0,0.04);--shadow-xl:0 20px 25px -5px rgba(0,0,0,0.08),0 8px 10px -6px rgba(0,0,0,0.04);--shadow-glow:0 0 30px rgba(99,102,241,0.15);--shadow-input:0 2px 8px rgba(0,0,0,0.04),0 0 0 1px rgba(0,0,0,0.04);--shadow-input-focus:0 0 0 3px rgba(99,102,241,0.15),0 2px 8px rgba(0,0,0,0.06);--transition-fast:150ms cubic-bezier(0.4,0,0.2,1);--transition-base:200ms cubic-bezier(0.4,0,0.2,1);--transition-slow:300ms cubic-bezier(0.4,0,0.2,1);--transition-spring:400ms cubic-bezier(0.34,1.56,0.64,1)}[data-theme=dark]{--color-bg-primary:#0b0f1a;--color-bg-secondary:#111827;--color-bg-tertiary:#1e293b;--color-bg-chat:#0f1729;--color-bg-sidebar:#0d1117;--color-bg-hover:rgba(255,255,255,0.06);--color-bg-active:rgba(99,102,241,0.15);--color-bg-glass:rgba(15,23,42,0.85);--color-bg-glass-heavy:rgba(15,23,42,0.95);--color-bg-input:#1e293b;--color-text-primary:#f1f5f9;--color-text-secondary:#94a3b8;--color-text-tertiary:#64748b;--color-border:#1e293b;--color-border-light:#1e293b;--color-msg-ai:#1e293b;--color-msg-ai-border:#334155;--shadow-xs:0 1px 2px rgba(0,0,0,0.2);--shadow-sm:0 1px 3px rgba(0,0,0,0.3);--shadow-md:0 4px 6px rgba(0,0,0,0.3);--shadow-lg:0 10px 15px rgba(0,0,0,0.35);--shadow-xl:0 20px 25px rgba(0,0,0,0.4)}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}body{font-family:var(--font-sans);color:var(--color-text-primary);background:var(--color-bg-primary);line-height:1.6;overflow:hidden;height:100vh;width:100vw}a{color:var(--color-accent);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;border:none;background:none}button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--color-text-tertiary);border-radius:var(--radius-full);opacity:0}::-webkit-scrollbar-thumb:hover{background:var(--color-text-secondary)}.app-layout{width:100vw}.app-layout,.sidebar{display:flex;height:100vh;overflow:hidden}.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);flex-direction:column;background:var(--color-bg-sidebar);border-right:1px 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var(--color-border-light);display:flex;flex-direction:column;gap:4px}.sidebar-balance{display:flex;align-items:center;gap:8px;padding:10px 12px;background:var(--color-bg-tertiary);border-radius:var(--radius-md);font-size:13px}.sidebar-balance-label{color:var(--color-text-tertiary);font-size:11px}.sidebar-balance-value{font-weight:700;color:var(--color-accent);font-size:14px}.sidebar-balance-bar{width:100%;height:3px;background:var(--color-border);border-radius:var(--radius-full);margin-top:4px;overflow:hidden}.sidebar-balance-fill{height:100%;background:var(--color-accent-gradient);border-radius:var(--radius-full);transition:width var(--transition-slow)}.chat-main{flex:1;display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--color-bg-chat);position:relative;overflow:hidden}.chat-header{height:var(--header-height);justify-content:space-between;padding:0 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code{font-family:var(--font-mono);font-size:13px}.message-bubble-ai :not(pre)>code{padding:2px 6px;background:var(--color-bg-tertiary);border-radius:4px;font-size:12.5px;border:1px solid var(--color-border)}.message-bubble-ai ol,.message-bubble-ai ul{padding-left:1.5em;margin:.5em 0}.message-bubble-ai li{margin-bottom:.25em}.message-bubble-ai blockquote{border-left:3px solid var(--color-accent);padding-left:12px;margin:8px 0;color:var(--color-text-secondary)}.message-bubble-ai h1,.message-bubble-ai h2,.message-bubble-ai h3{margin-top:1em;margin-bottom:.5em;font-weight:600}.message-bubble-ai table{border-collapse:collapse;width:100%;margin:8px 0;font-size:13px}.message-bubble-ai td,.message-bubble-ai th{border:1px solid var(--color-border);padding:6px 10px;text-align:left}.message-bubble-ai 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var(--transition-fast)}.chat-input-btn:hover{background:var(--color-bg-hover);color:var(--color-text-primary)}.chat-input-send{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);background:var(--color-accent-gradient);color:white;transition:all var(--transition-fast);box-shadow:var(--shadow-sm)}.chat-input-send:hover{transform:scale(1.05);box-shadow:var(--shadow-md),var(--color-accent-glow)}.chat-input-send:active{transform:scale(.95)}.chat-input-send:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}.chat-input-hint{text-align:center;font-size:11px;color:var(--color-text-tertiary);margin-top:8px}.chat-input-hint kbd{padding:1px 5px;border-radius:4px;border:1px solid var(--color-border);background:var(--color-bg-secondary);font-family:inherit;font-size:10px}.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:100;animation:fadeIn var(--transition-base)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{background:var(--color-bg-primary);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);width:90vw;max-width:640px;max-height:80vh;display:flex;flex-direction:column;animation:modalIn var(--transition-spring);overflow:hidden}@keyframes modalIn{0%{opacity:0;transform:scale(.95) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid 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