@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap";
:root{--bg-primary:#e6e8e2;--bg-secondary:#f0f2ec;--bg-tertiary:#dadcd3;--bg-card:#f0f2ec;--bg-card-hover:#ebede6;--bg-glass:#f0f2ece6;--bg-overlay-hover:#0000000d;--bg-overlay-strong:#00000014;--text-primary:#0f1614;--text-secondary:#0f1614ad;--text-tertiary:#0f16147a;--text-inverse:#fff;--accent-teal:#00b88e;--accent-teal-dim:#009878;--accent:var(--accent-teal);--accent-dim:var(--accent-teal-dim);--accent-blue:#2563eb;--accent-blue-dim:#1d4ed8;--accent-purple:#7c3aed;--accent-purple-dim:#6d28d9;--accent-amber:#d97706;--border-subtle:#0f161414;--border-medium:#0f161424;--border-strong:#0f16143d;--space-xs:4px;--space-sm:8px;--space-md:16px;--space-lg:24px;--space-xl:32px;--space-2xl:48px;--space-3xl:64px;--space-4xl:96px;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--radius-full:9999px;--transition-fast:.15s cubic-bezier(.4, 0, .2, 1);--transition-base:.25s cubic-bezier(.4, 0, .2, 1);--transition-slow:.4s cubic-bezier(.4, 0, .2, 1);--transition-spring:.5s cubic-bezier(.34, 1.56, .64, 1);--shadow-glow-teal:0 6px 20px #00b88e2e;--shadow-glow-blue:0 6px 20px #2563eb2e;--shadow-glow-purple:0 6px 20px #7c3aed2e;--shadow-card:0 1px 2px #0f16140a, 0 4px 16px #0f16140d;--shadow-card-hover:0 4px 12px #0f16140f, 0 12px 32px #0f161414;--content-max:1200px;--content-narrow:800px;--nav-height:64px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{background:var(--bg-primary);color:var(--text-primary);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6;overflow-x:hidden}a{color:inherit;text-decoration:none}button{cursor:pointer;background:0 0;border:none;font-family:inherit}img{max-width:100%;height:auto}.page-container{flex-direction:column;min-height:100vh;display:flex}.content-wrapper{max-width:var(--content-max);padding:0 var(--space-lg);width:100%;margin:0 auto}.content-narrow{max-width:var(--content-narrow);padding:0 var(--space-lg);width:100%;margin:0 auto}.section{padding:var(--space-4xl) var(--space-lg)}.section-header{text-align:center;margin-bottom:var(--space-3xl)}.section-header h2{letter-spacing:-.02em;margin-bottom:var(--space-md);font-size:clamp(1.8rem,4vw,2.8rem);font-weight:700}.section-header p{color:var(--text-secondary);max-width:600px;margin:0 auto;font-size:1.1rem}h1,h2,h3,h4,h5,h6{letter-spacing:-.02em;line-height:1.2}h1{font-size:clamp(2.4rem,6vw,4rem);font-weight:800}h2{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:700}h3{font-size:clamp(1.2rem,2.5vw,1.6rem);font-weight:600}.gradient-text{background:linear-gradient(135deg, var(--accent-teal) 0%, var(--accent-blue) 50%, var(--accent-purple) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.text-secondary{color:var(--text-secondary)}.text-tertiary{color:var(--text-tertiary)}.navbar{height:var(--nav-height);z-index:1000;padding:0 var(--space-xl);background:var(--bg-glass);-webkit-backdrop-filter:blur(20px)saturate(180%);border-bottom:1px solid var(--border-subtle);justify-content:space-between;align-items:center;display:flex;position:fixed;top:0;left:0;right:0}.navbar-brand{align-items:center;gap:var(--space-sm);letter-spacing:-.02em;font-size:1.3rem;font-weight:700;display:flex}.navbar-brand .brand-accent{color:var(--accent-teal)}.navbar-brand img{border-radius:6px;width:28px;height:28px}.navbar-links{align-items:center;gap:var(--space-xs);display:flex}.nav-link{padding:var(--space-sm) var(--space-md);color:var(--text-secondary);border-radius:var(--radius-md);transition:color var(--transition-fast), background var(--transition-fast);font-size:.9rem;font-weight:500}.nav-link:hover{color:var(--text-primary);background:var(--bg-overlay-hover)}.nav-link.active{color:var(--text-primary)}.navbar-toggle{color:var(--text-primary);padding:var(--space-sm);cursor:pointer;background:0 0;border:none;min-width:44px;min-height:44px;font-size:1.4rem;display:none}.mobile-menu{top:var(--nav-height);background:var(--bg-glass);-webkit-backdrop-filter:blur(20px);padding:var(--space-lg);border-bottom:1px solid var(--border-subtle);gap:var(--space-sm);z-index:999;opacity:0;pointer-events:none;transition:transform var(--transition-base), opacity var(--transition-base);flex-direction:column;display:none;position:fixed;left:0;right:0;transform:translateY(-10px)}.mobile-menu.open{opacity:1;pointer-events:all;transform:translateY(0)}@media (max-width:768px){.navbar-links{display:none}.navbar-toggle{display:block}.mobile-menu{display:flex}}.btn{justify-content:center;align-items:center;gap:var(--space-sm);border-radius:var(--radius-md);transition:all var(--transition-base);white-space:nowrap;padding:10px 20px;font-size:.9rem;font-weight:600;display:inline-flex;position:relative;overflow:hidden}.btn-primary{background:linear-gradient(135deg, var(--accent-teal), var(--accent-teal-dim));color:var(--text-inverse)}.btn-primary:hover{box-shadow:var(--shadow-glow-teal);transform:translateY(-1px)}.btn-secondary{background:var(--bg-card);color:var(--text-primary);border:1px solid var(--border-medium)}.btn-secondary:hover{background:var(--bg-card-hover);border-color:var(--border-strong)}.btn-ghost{color:var(--text-secondary);padding:8px 16px}.btn-ghost:hover{color:var(--text-primary);background:var(--bg-overlay-hover)}.btn-sm{padding:6px 14px;font-size:.85rem}.btn-lg{padding:14px 28px;font-size:1rem}.btn-xl{border-radius:var(--radius-lg);padding:16px 32px;font-size:1.05rem}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:var(--space-xl);box-shadow:var(--shadow-card);transition:all var(--transition-base)}.card:hover{background:var(--bg-card-hover);border-color:var(--border-medium);box-shadow:var(--shadow-card-hover)}.card-glass{background:var(--bg-secondary);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:var(--space-xl);box-shadow:var(--shadow-card)}.database-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-xl);padding:var(--space-xl);transition:all var(--transition-slow);flex-direction:column;display:flex;position:relative;overflow:hidden}.database-card:before{content:"";background:var(--card-accent);opacity:0;height:3px;transition:opacity var(--transition-base);position:absolute;top:0;left:0;right:0}.database-card:hover{border-color:var(--card-accent);box-shadow:var(--shadow-card-hover);transform:translateY(-4px)}.database-card:hover:before{opacity:1}.database-card .card-icon{margin-bottom:var(--space-md);font-size:2.5rem}.database-card .card-badge{text-transform:uppercase;letter-spacing:.08em;border-radius:var(--radius-full);margin-bottom:var(--space-md);padding:3px 10px;font-size:.7rem;font-weight:600;display:inline-block}.badge-active{color:var(--accent-teal);background:#00d4aa26}.badge-coming{color:var(--accent-purple);background:#8b5cf626}.database-card h3{margin-bottom:var(--space-sm)}.database-card .card-desc{color:var(--text-secondary);margin-bottom:var(--space-lg);flex:1 0 auto;font-size:.9rem;line-height:1.5}.stats-row{gap:var(--space-lg);margin-bottom:var(--space-lg);display:flex}.stat-item{flex-direction:column;display:flex}.stat-value{color:var(--text-primary);font-size:1.3rem;font-weight:700}.stat-label{color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.06em;font-size:.75rem}.citation-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:var(--space-lg);transition:all var(--transition-base)}.citation-card:hover{border-color:var(--border-medium)}.citation-title{margin-bottom:var(--space-sm);font-size:1rem;font-weight:600;line-height:1.4}.citation-title a{color:var(--text-primary);transition:color var(--transition-fast)}.citation-title a:hover{color:var(--accent-teal)}.citation-title .external-icon{opacity:.5;margin-left:4px;font-size:.75rem}.citation-authors{color:var(--text-secondary);margin-bottom:var(--space-md);font-size:.85rem}.citation-actions{gap:var(--space-sm);margin-bottom:var(--space-md);flex-wrap:wrap;display:flex}.citation-action-btn{color:var(--text-secondary);background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast);align-items:center;gap:4px;padding:4px 10px;font-size:.78rem;display:inline-flex}.citation-action-btn:hover{color:var(--text-primary);background:var(--bg-overlay-hover);border-color:var(--border-medium)}.citation-action-btn.copied{color:var(--accent-teal);border-color:var(--accent-teal)}.citation-badges{gap:var(--space-xs);flex-wrap:wrap;display:flex}.citation-badge{border-radius:var(--radius-full);background:var(--bg-tertiary);color:var(--text-secondary);padding:2px 8px;font-size:.7rem}.badge-teal{color:var(--accent-teal-dim);background:#00b88e24}.badge-blue{color:var(--accent-blue-dim);background:#2563eb1f}.badge-purple{color:var(--accent-purple-dim);background:#7c3aed1f}.badge-amber{color:var(--accent-amber);background:#d9770624}.query-container{max-width:var(--content-narrow);margin:0 auto}.query-input-wrapper{margin-bottom:var(--space-lg);position:relative}.query-textarea{width:100%;min-height:120px;padding:var(--space-lg);background:var(--bg-card);border:1px solid var(--border-medium);border-radius:var(--radius-lg);color:var(--text-primary);resize:vertical;transition:border-color var(--transition-fast), box-shadow var(--transition-fast);font-family:inherit;font-size:1rem;line-height:1.6}.query-textarea:focus{border-color:var(--accent-teal);outline:none;box-shadow:0 0 0 3px #00d4aa1a}.query-textarea::placeholder{color:var(--text-tertiary)}.query-controls{justify-content:space-between;align-items:center;gap:var(--space-md);flex-wrap:wrap;display:flex}.mode-toggle{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);display:flex;overflow:hidden}.mode-btn{color:var(--text-secondary);transition:all var(--transition-fast);background:0 0;border:none;padding:8px 16px;font-size:.85rem;font-weight:500}.mode-btn.active{background:var(--accent-teal);color:var(--text-inverse)}.mode-btn:hover:not(.active){color:var(--text-primary);background:var(--bg-overlay-hover)}.mode-toggle-group{flex-direction:column;flex:auto;align-items:flex-start;gap:8px;min-width:0;display:flex}.mode-toggle-group .mode-toggle{width:auto}.mode-description{color:var(--text-secondary);max-width:540px;margin:0;font-size:.82rem;line-height:1.5}.mode-description strong{color:var(--text-primary);font-weight:600}.answer-panel{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-xl);padding:var(--space-2xl);margin-top:var(--space-xl);animation:.5s ease-out fadeInUp}.answer-content{color:var(--text-primary);font-size:.95rem;line-height:1.8}.answer-content p{margin-bottom:var(--space-md)}.answer-content ul,.answer-content ol{margin-left:var(--space-lg);margin-bottom:var(--space-md)}.answer-content li{margin-bottom:var(--space-sm)}.answer-content strong{font-weight:600}.answer-content em{color:var(--text-secondary)}.answer-meta{align-items:center;gap:var(--space-md);margin-top:var(--space-xl);padding-top:var(--space-lg);border-top:1px solid var(--border-subtle);color:var(--text-tertiary);font-size:.85rem;display:flex}.citations-section{margin-top:var(--space-2xl)}.citations-section h3{margin-bottom:var(--space-lg);font-size:1.2rem}.citations-grid{gap:var(--space-md);flex-direction:column;display:flex}.auth-container{min-height:calc(100vh - var(--nav-height));padding:var(--space-2xl) var(--space-lg);justify-content:center;align-items:center;display:flex}.auth-card{width:100%;max-width:440px;padding:var(--space-2xl)}.auth-header{text-align:center;margin-bottom:var(--space-2xl)}.auth-header h1{margin-bottom:var(--space-sm);font-size:1.8rem}.auth-header p{color:var(--text-secondary);font-size:.95rem}.form-group{margin-bottom:var(--space-lg)}.form-label{color:var(--text-secondary);margin-bottom:var(--space-sm);font-size:.85rem;font-weight:500;display:block}.form-input{width:100%;padding:12px var(--space-md);background:var(--bg-secondary);border:1px solid var(--border-medium);border-radius:var(--radius-md);color:var(--text-primary);transition:border-color var(--transition-fast), box-shadow var(--transition-fast);font-family:inherit;font-size:.95rem}.form-input:focus{border-color:var(--accent-teal);outline:none;box-shadow:0 0 0 3px #00d4aa1a}.form-input::placeholder{color:var(--text-tertiary)}.form-error{margin-top:var(--space-sm);color:#ef4444;font-size:.85rem}.auth-error{border-radius:var(--radius-md);padding:var(--space-md);margin-bottom:var(--space-lg);color:#ef4444;text-align:center;background:#ef44441a;border:1px solid #ef44444d;font-size:.9rem}.auth-footer{text-align:center;margin-top:var(--space-lg);color:var(--text-secondary);font-size:.9rem}.auth-footer a{color:var(--accent-teal);font-weight:500}.auth-footer a:hover{text-decoration:underline}.dashboard-header{margin-bottom:var(--space-2xl)}.dashboard-stats{gap:var(--space-md);margin-bottom:var(--space-2xl);grid-template-columns:repeat(auto-fit,minmax(200px,1fr));display:grid}.dashboard-stat-card{padding:var(--space-lg)}.query-history-item{padding:var(--space-lg);margin-bottom:var(--space-md);cursor:pointer}.query-history-item:hover{background:var(--bg-card-hover)}.query-history-item .query-text{margin-bottom:var(--space-xs);font-weight:500}.query-history-item .query-meta{color:var(--text-tertiary);font-size:.8rem}.footer{border-top:1px solid var(--border-subtle);padding:var(--space-3xl) var(--space-lg) var(--space-xl);margin-top:auto}.footer-grid{gap:var(--space-2xl);max-width:var(--content-max);margin:0 auto;margin-bottom:var(--space-2xl);grid-template-columns:2fr 1fr 1fr 1fr;display:grid}.footer-brand .brand-name{letter-spacing:-.02em;margin-bottom:var(--space-md);color:var(--text-primary);font-size:1.2rem;font-weight:700;display:block}.footer-brand .brand-name span{color:var(--accent-teal)}.footer-brand .brand-desc{color:var(--text-tertiary);font-size:.85rem;line-height:1.6}.footer-column h4{text-transform:uppercase;letter-spacing:.06em;color:var(--text-secondary);margin-bottom:var(--space-md);font-size:.85rem;font-weight:600}.footer-column ul{list-style:none}.footer-column li{margin-bottom:var(--space-sm)}.footer-column a{color:var(--text-tertiary);transition:color var(--transition-fast);font-size:.9rem}.footer-column a:hover{color:var(--text-primary)}.footer-bottom{max-width:var(--content-max);padding-top:var(--space-xl);border-top:1px solid var(--border-subtle);color:var(--text-tertiary);justify-content:space-between;align-items:center;margin:0 auto;font-size:.8rem;display:flex}.footer-links{gap:var(--space-lg);display:flex}.footer-links a{color:var(--text-tertiary);transition:color var(--transition-fast)}.footer-links a:hover{color:var(--text-primary)}@media (max-width:768px){.footer-grid{gap:var(--space-xl);grid-template-columns:1fr}.footer-bottom{gap:var(--space-md);text-align:center;flex-direction:column}}.pricing-grid{gap:var(--space-lg);grid-template-columns:repeat(auto-fit,minmax(280px,1fr));max-width:960px;margin:0 auto;display:grid}.pricing-card{padding:var(--space-2xl);text-align:left}.pricing-card.featured{border-color:var(--accent-teal);position:relative}.pricing-card.featured:before{content:"Popular";background:var(--accent-teal);color:var(--text-inverse);border-radius:var(--radius-full);padding:4px 14px;font-size:.75rem;font-weight:600;position:absolute;top:-12px;left:50%;transform:translate(-50%)}.pricing-card h3{margin-bottom:var(--space-sm);font-size:1.3rem}.pricing-price{margin-bottom:var(--space-lg);font-size:2.4rem;font-weight:800}.pricing-price 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p{color:var(--text-secondary);font-size:.9rem;line-height:1.7}.features-grid{gap:var(--space-lg);grid-template-columns:repeat(auto-fit,minmax(260px,1fr));display:grid}.feature-card{padding:var(--space-xl)}.feature-icon{margin-bottom:var(--space-md);font-size:2rem}.feature-card h3{margin-bottom:var(--space-sm);font-size:1.1rem}.feature-card p{color:var(--text-secondary);font-size:.9rem;line-height:1.6}.results-panel{flex-direction:column;gap:24px;margin-top:32px;display:flex}.results-header{background:var(--bg-secondary);border:1px solid var(--border-subtle);color:var(--text-secondary);box-shadow:var(--shadow-card);border-radius:8px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:12px 16px;font-size:.9rem;display:flex}.results-header-counts{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.results-header-sep{color:var(--text-tertiary);margin:0 2px}.results-empty{text-align:center;color:var(--text-secondary);background:var(--bg-secondary);border:1px 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