:root{--radius: .875rem;--gold: oklch(.82 .14 82);--gold-soft: oklch(.94 .06 85);--teal: oklch(.58 .08 200);--teal-dark: oklch(.36 .05 210);--teal-soft: oklch(.94 .02 200);--ink: oklch(.16 .005 250);--paper: oklch(.985 .004 90);--background: var(--paper);--foreground: var(--ink);--card: oklch(1 0 0);--card-foreground: var(--ink);--primary: var(--teal-dark);--primary-foreground: oklch(.98 .004 90);--secondary: oklch(.96 .008 90);--secondary-foreground: var(--ink);--muted: oklch(.96 .006 90);--muted-foreground: oklch(.48 .012 240);--accent: var(--gold);--accent-foreground: var(--ink);--border: oklch(.9 .008 90 / .7);--input: oklch(.92 .008 90);--ring: var(--teal);--font-sans: "Lato", ui-sans-serif, system-ui, sans-serif;--font-serif: "Merriweather", ui-serif, Georgia, serif}html.dark{--background: oklch(.14 .01 220);--foreground: oklch(.96 .006 90);--card: oklch(.18 .012 220);--card-foreground: oklch(.96 .006 90);--primary: var(--gold);--primary-foreground: var(--ink);--secondary: oklch(.22 .014 220);--secondary-foreground: oklch(.96 .006 90);--muted: oklch(.22 .014 220);--muted-foreground: oklch(.7 .02 220);--accent: var(--gold);--accent-foreground: var(--ink);--border: oklch(1 0 0 / .08);--input: oklch(1 0 0 / .1);--ring: var(--gold);--teal-soft: oklch(.28 .03 200);--gold-soft: oklch(.32 .04 85)}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%}body{font-family:var(--font-sans);background:var(--background);color:var(--foreground);height:100vh;overflow:hidden;display:flex;flex-direction:row;-webkit-font-smoothing:antialiased}@supports (height: 100svh){body{height:100svh}}.sidebar{width:280px;flex-shrink:0;height:100%;overflow:hidden;display:flex;flex-direction:column;padding:16px 14px;border-right:1px solid var(--border);background:var(--card)}.new-chat-btn{display:flex;align-items:center;gap:8px;width:100%;padding:10px 14px;border-radius:10px;border:1px solid var(--border);background:var(--card);color:var(--foreground);font-weight:700;font-size:13.5px;flex-shrink:0}.new-chat-btn:hover{border-color:var(--ring)}.new-chat-btn svg{width:16px;height:16px;flex-shrink:0}.history-list{flex:1;min-height:0;overflow-y:auto;margin-top:14px;display:flex;flex-direction:column;gap:3px}.history-empty{font-size:12.5px;color:var(--muted-foreground);padding:10px 8px}.history-item{display:block;width:100%;text-align:left;padding:9px 10px;border-radius:8px;border:none;background:transparent;color:var(--foreground);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.history-item:hover{background:var(--secondary)}.history-item.active{background:var(--secondary);font-weight:700}.sidebar-footer{flex-shrink:0;padding-top:12px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:10px}.user-row{display:flex;align-items:center;gap:10px;min-width:0}.user-avatar{width:32px;height:32px;border-radius:999px;flex-shrink:0;background:linear-gradient(135deg,var(--teal),var(--teal-dark));color:var(--gold-soft);display:flex;align-items:center;justify-content:center;font-family:var(--font-serif);font-weight:900;font-size:13px}.user-meta{min-width:0;overflow:hidden}.user-name{font-size:13px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-email{font-size:11px;color:var(--muted-foreground);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-actions{display:flex;align-items:center;justify-content:space-between}.sidebar-link{background:none;border:none;padding:0;font-size:12.5px;color:var(--muted-foreground);text-decoration:underline;text-underline-offset:3px}.content-col{flex:1;min-width:0;height:100%;display:flex;flex-direction:column;overflow:hidden}.font-serif{font-family:var(--font-serif)}a{color:inherit}button{font-family:inherit;cursor:pointer}svg{display:block}.ambient-bg{position:relative;overflow-x:hidden}.ambient-bg:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;z-index:-2;pointer-events:none;background:radial-gradient(circle at 10% 0%,color-mix(in oklch,var(--teal) 22%,transparent) 0%,transparent 45%),radial-gradient(circle at 90% 5%,color-mix(in oklch,var(--gold) 26%,transparent) 0%,transparent 50%),radial-gradient(circle at 50% 100%,color-mix(in oklch,var(--teal-dark) 18%,transparent) 0%,transparent 55%)}.ambient-bg:after{content:"";position:fixed;top:0;right:0;bottom:0;left:0;z-index:-1;pointer-events:none;opacity:.35;mix-blend-mode:multiply;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.35'/%3E%3C/svg%3E")}html.dark .ambient-bg:after{mix-blend-mode:screen;opacity:.18}.glass{background:color-mix(in oklch,var(--card) 72%,transparent);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);border:1px solid var(--border);box-shadow:inset 0 1px color-mix(in oklch,white 30%,transparent),0 10px 30px -12px color-mix(in oklch,var(--ink) 18%,transparent)}.spotlight-shadow{box-shadow:0 20px 60px -20px color-mix(in oklch,var(--teal-dark) 35%,transparent),0 8px 24px -8px color-mix(in oklch,var(--gold) 30%,transparent)}.hover-elevate{transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.hover-elevate:hover{transform:translateY(-2px);border-color:color-mix(in oklch,var(--accent) 45%,var(--border));box-shadow:0 14px 30px -14px color-mix(in oklch,var(--ink) 25%,transparent)}.text-gradient-warm{background:linear-gradient(100deg,var(--teal),var(--ink) 80%);-webkit-background-clip:text;background-clip:text;color:transparent}html.dark .text-gradient-warm{background:linear-gradient(100deg,var(--teal),oklch(.96 .006 90) 80%);-webkit-background-clip:text;background-clip:text;color:transparent}.topbar{display:flex;align-items:center;gap:12px;padding:clamp(10px,2vh,18px) 32px;flex-shrink:0}.brand-logo{display:flex;align-items:center;text-decoration:none}.logo-img{height:clamp(40px,8vh,72px);width:auto;display:block}.menu-btn{display:none;width:34px;height:34px;border-radius:8px;border:1px solid var(--border);background:transparent;flex-shrink:0;align-items:center;justify-content:center;color:var(--foreground)}.menu-btn svg{width:18px;height:18px}.theme-btn-mobile{display:none;width:34px;height:34px;border-radius:8px;border:1px solid var(--border);background:transparent;flex-shrink:0;align-items:center;justify-content:center;color:var(--foreground);margin-left:auto}.theme-btn-mobile svg{width:18px;height:18px}.sidebar-backdrop{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#03030373;z-index:140}.icon-btn-sm{width:28px;height:28px;border-radius:999px;border:1px solid var(--border);background:transparent;flex-shrink:0;display:flex;align-items:center;justify-content:center;color:var(--muted-foreground);transition:background .15s ease,border-color .15s ease}.icon-btn-sm:hover{background:var(--secondary);border-color:var(--ring);color:var(--foreground)}.icon-btn-sm svg{width:14px;height:14px}main{max-width:1200px;width:100%;margin:0 auto;padding:clamp(8px,3vh,40px) 32px 0;flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;display:flex;flex-direction:column;justify-content:flex-start;gap:clamp(10px,2vh,22px)}.hero-title{font-family:var(--font-serif);font-size:clamp(1.7rem,1.6vw + 2.2vh,3.6rem);line-height:1.08;margin:0;font-weight:900}.hero-title em{font-style:italic;font-size:1.3em}.hero-sub{font-size:clamp(14px,.5vw + 1.3vh,20px);color:var(--muted-foreground);max-width:640px;margin:0}.quickstarts{margin:0}.qs-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(8px,1.2vh,14px);margin:0}.qs-card{padding:clamp(10px,1.6vh,18px);border-radius:var(--radius);cursor:pointer;text-align:left;display:flex;flex-direction:column;gap:clamp(6px,.8vh,10px);border:1px solid var(--border);background:color-mix(in oklch,var(--card) 65%,transparent);color:var(--foreground)}.qs-icon{width:clamp(28px,4vh,36px);height:clamp(28px,4vh,36px);border-radius:10px;display:flex;align-items:center;justify-content:center;background:var(--teal-soft);color:var(--teal-dark)}html.dark .qs-icon{background:var(--gold-soft);color:var(--gold)}.qs-icon svg{width:16px;height:16px}.qs-title{font-size:clamp(13px,.9vh + .3vw,15px);font-weight:700}.qs-sub{font-size:12.5px;color:var(--muted-foreground);line-height:1.4}.chat-panel{margin-top:0}.input-pill{display:flex;align-items:center;gap:12px;border-radius:999px;padding:8px 8px 8px 22px}.input-pill svg.sparkle{width:20px;height:20px;color:var(--accent);flex-shrink:0}.input-pill input{flex:1;border:none;outline:none;background:transparent;font-size:16.5px;font-family:var(--font-sans);color:var(--foreground)}.input-pill input::placeholder{color:var(--muted-foreground)}.send-btn{width:44px;height:44px;border-radius:999px;border:none;flex-shrink:0;background:var(--teal-dark);color:var(--gold-soft);display:flex;align-items:center;justify-content:center;transition:transform .15s ease}html.dark .send-btn{background:var(--gold);color:var(--ink)}.send-btn:hover{transform:scale(1.05)}.send-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.send-btn svg{width:18px;height:18px}.try-row{display:flex;flex-wrap:wrap;gap:8px 22px;margin:0 4px}.try-row span.lbl{font-size:12.5px;color:var(--muted-foreground)}.try-link{background:none;border:none;padding:0;font-size:13.5px;color:var(--primary);text-decoration:underline;text-underline-offset:3px}.answer-feed{display:flex;flex-direction:column;gap:18px;margin-top:26px}.qa-card{padding:20px 22px;border-radius:var(--radius)}.qa-question{display:flex;align-items:flex-start;gap:10px;font-weight:700;font-size:15.5px;margin-bottom:12px}.qa-question .dot{width:8px;height:8px;border-radius:999px;background:var(--accent);margin-top:7px;flex-shrink:0}.qa-answer-row{display:flex;align-items:flex-start;gap:12px}.qa-avatar{width:30px;height:30px;border-radius:999px;flex-shrink:0;margin-top:2px;background:linear-gradient(135deg,var(--teal),var(--teal-dark));color:var(--gold-soft);display:flex;align-items:center;justify-content:center;font-family:var(--font-serif);font-weight:900;font-size:13px}.qa-answer{font-size:15.5px;line-height:1.7;white-space:pre-wrap}.typing-dot{display:inline-block;width:6px;height:6px;border-radius:999px;background:var(--muted-foreground);margin-right:4px;animation:blink 1.2s infinite}.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}@keyframes blink{0%,80%,to{opacity:.25}40%{opacity:1}}.source-block{margin-top:14px;padding-top:14px;border-top:1px solid var(--border);display:flex;flex-wrap:wrap;align-items:center;gap:10px}.rec-btn,.ppt-btn{display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border-radius:999px;font-size:13px;font-weight:700;text-decoration:none;border:1px solid var(--border);color:var(--teal-dark);background:var(--teal-soft)}html.dark .rec-btn,html.dark .ppt-btn{color:var(--gold);background:var(--gold-soft)}.rec-btn svg,.ppt-btn svg{width:14px;height:14px}.source-meta{font-size:12.5px;color:var(--muted-foreground)}.fallback-block{margin-top:6px}.fallback-block .rec-btn{color:var(--primary)}.feedback-row{margin-top:14px;padding-top:14px;border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px}.feedback-left{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted-foreground)}.fb-btn{width:30px;height:30px;border-radius:999px;border:1px solid var(--border);background:transparent;display:flex;align-items:center;justify-content:center;color:var(--muted-foreground)}.fb-btn svg{width:15px;height:15px}.fb-btn.active{color:var(--primary);border-color:var(--ring);background:var(--secondary)}.ticket-link{font-size:12.5px;font-weight:700;text-decoration:underline;text-underline-offset:3px;color:var(--primary)}.fb-thanks{font-size:12.5px;color:var(--muted-foreground);font-style:italic}.site-footer{text-align:center;font-size:12px;color:var(--muted-foreground);padding:clamp(4px,1vh,16px) 0 0;flex-shrink:0}body.chat-active .quickstarts,body.chat-active .hero-title,body.chat-active .hero-sub,body.chat-active .site-footer,body.chat-active .try-row{display:none}body.chat-active main{justify-content:flex-start;overflow:hidden;gap:0;padding-top:8px}body.chat-active .chat-panel{flex:1;display:flex;flex-direction:column-reverse;overflow:hidden;padding-bottom:22px;min-height:0}body.chat-active .answer-feed{flex:1;overflow-y:auto;display:flex;flex-direction:column-reverse;margin-top:0;padding:20px 4px;gap:18px;min-height:0}body.chat-active .search-form{margin-top:14px}.auth-overlay{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:var(--background);z-index:200;align-items:center;justify-content:center;padding:20px}body.show-auth .auth-overlay{display:flex}.auth-card{width:100%;max-width:420px;padding:36px 30px;border-radius:var(--radius);text-align:center}.auth-card .logo-img{height:56px;margin:0 auto 18px}.auth-card h2{font-family:var(--font-serif);font-size:22px;margin:0 0 8px}.auth-card p{font-size:14px;color:var(--muted-foreground);margin:0 0 26px}.ms-signin-btn{width:100%;display:flex;align-items:center;justify-content:center;gap:10px;padding:12px;border-radius:10px;border:1px solid var(--border);font-weight:700;font-size:14.5px;background:var(--card);color:var(--foreground)}.ms-signin-btn:hover{border-color:var(--ring)}.ms-signin-btn svg{width:18px;height:18px;flex-shrink:0}.ms-signin-btn:disabled{opacity:.6;cursor:not-allowed}.auth-error{margin-top:14px;font-size:12.5px;color:#c53637}.auth-hint{margin-top:18px;font-size:12px;color:var(--muted-foreground)}body:not(.authed) .sidebar,body:not(.authed) .topbar,body:not(.authed) main{visibility:hidden}@media(max-width:900px){.qs-grid{grid-template-columns:repeat(4,1fr);gap:10px}.qs-sub{display:none}main{padding:clamp(8px,3vh,40px) 18px 0}.topbar{padding:clamp(10px,2vh,14px) 18px}.sidebar{width:210px;padding:12px 10px}}@media(max-width:640px){.menu-btn,.theme-btn-mobile{display:flex}.sidebar{position:fixed;inset:0 auto 0 0;z-index:150;height:100vh;width:min(85vw,320px);padding:22px 18px;transform:translate(-100%);transition:transform .22s ease;box-shadow:0 0 40px #03030340}body.sidebar-open .sidebar{transform:translate(0)}body.sidebar-open .sidebar-backdrop{display:block}.history-list{margin-top:18px;gap:5px}.history-item{padding:11px 12px}.sidebar-footer{padding-top:16px;gap:12px}.topbar{padding:12px 16px}.logo-img{height:clamp(44px,8.5vh,56px)}main{padding:14px 18px 0;gap:clamp(6px,1.4vh,14px)}.hero-title{font-size:clamp(1.5rem,6vw + 1vh,2.5rem)}.hero-sub{font-size:14px}.qs-grid{grid-template-columns:repeat(4,1fr);gap:6px}.qs-card{padding:8px 4px 10px;gap:5px;align-items:center;text-align:center;border-radius:12px}.qs-icon{width:26px;height:26px;border-radius:8px}.qs-icon svg{width:14px;height:14px}.qs-title{font-size:10.5px;line-height:1.25}.qs-sub{display:none}.try-row{gap:6px 14px;justify-content:center;text-align:center}.try-row span.lbl{display:none}.auth-card{padding:30px 24px}.qa-card{padding:18px 20px}.qa-question,.qa-answer{font-size:16px}.input-pill{padding:8px 8px 8px 18px}.input-pill input{font-size:16.5px}.feedback-row{flex-direction:column;align-items:flex-start;gap:10px}}@media(max-width:380px){main{padding:10px 14px 0;gap:6px}.hero-title{font-size:1.5rem}.hero-sub{font-size:13px}.qs-grid{gap:5px}.qs-card{padding:6px 3px 8px;gap:4px;border-radius:10px}.qs-icon{width:22px;height:22px;border-radius:7px}.qs-icon svg{width:12px;height:12px}.qs-title{font-size:9.5px}.input-pill{padding:6px 6px 6px 14px;gap:8px}.send-btn{width:38px;height:38px}}@media(max-height:740px){.qs-sub,.try-row .lbl{display:none}}@media(max-height:560px){.hero-sub{display:none}}@media(max-width:640px)and (max-height:700px){.hero-title{font-size:1.5rem}.hero-sub{display:none}main{gap:6px}}#root{flex:1;min-width:0;height:100%;display:flex;flex-direction:row}