:root{--bg: oklch(98.3% .005 250);--surface: oklch(100% 0 0);--surface-2: oklch(97.4% .006 250);--ink: oklch(25% .02 262);--ink-2: oklch(38% .02 262);--muted: oklch(50% .018 262);--line: oklch(92.5% .008 255);--line-strong: oklch(87% .012 255);--accent: oklch(55% .175 258);--accent-strong: oklch(47% .17 258);--accent-soft: oklch(95.5% .024 258);--accent-tint: oklch(97.5% .012 258);--danger: oklch(50% .185 28);--danger-soft: oklch(96.5% .02 28);--success: oklch(50% .13 155);--success-soft: oklch(96.5% .025 155);--warn-ink: oklch(45% .12 75);--text-xs: .75rem;--text-s: .8125rem;--text-m: .875rem;--text-l: 1rem;--text-xl: 1.125rem;--radius-s: 8px;--radius-m: 12px;--radius-l: 18px;--sidebar-width: 288px;--agent-width: 316px;--shadow-1: 0 1px 2px oklch(30% .02 262 / .05);--shadow-2: 0 4px 16px oklch(30% .03 262 / .07), 0 1px 3px oklch(30% .02 262 / .05);--shadow-3: 0 12px 40px oklch(30% .04 262 / .14);--z-backdrop: 40;--z-drawer: 50;--z-float: 30;--ease-out: cubic-bezier(.22, 1, .36, 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.1), 0 1px 3px oklch(38% .03 258 / .06);--card-shadow-hover: 0 12px 28px oklch(47% .15 258 / .17), 0 3px 8px oklch(38% .04 258 / .08);--composer-shadow: 0 12px 32px oklch(38% .05 258 / .13), 0 2px 6px oklch(38% .03 258 / .07)}body{background:#ebf2fb;overflow:hidden}.app-shell{position:relative;isolation:isolate;height:100dvh;min-height:700px;padding:14px;gap:16px;grid-template-columns:var(--sidebar-width) minmax(0,1fr) var(--agent-width);background:radial-gradient(circle at 45% -12%,oklch(92% .065 345 / .72),transparent 34%),radial-gradient(circle at 82% 8%,oklch(92% .06 220 / .6),transparent 32%),linear-gradient(135deg,#eff6ff,#e7eefa)}.ambient-background{position:absolute;inset:0;z-index:-1;overflow:hidden;pointer-events:none}.ambient-background span{position:absolute;width:38vw;aspect-ratio:1;border-radius:50%;filter:blur(88px);opacity:.34;will-change:transform,opacity}.ambient-background span:nth-child(1){top:-28%;left:22%;background:#ffabe3;animation:ambient-a 22s var(--ease-out) infinite alternate}.ambient-background span:nth-child(2){top:-18%;right:-8%;background:#7dd9fc;animation:ambient-b 26s var(--ease-out) infinite alternate}.ambient-background span:nth-child(3){bottom:-30%;left:38%;background:#c3ceff;background:oklch(86% .09 275);animation:ambient-c 20s var(--ease-out) infinite alternate}.conversation-sidebar,.chat-main,.agent-panel{position:relative;min-height:0;border:1px solid oklch(100% 0 0 / .82);border-radius:var(--panel-radius);box-shadow:var(--panel-shadow);overflow:hidden}.conversation-sidebar{padding:20px 18px 16px;background:#f6f9fff0;-webkit-backdrop-filter:blur(22px) saturate(1.08);backdrop-filter:blur(22px) saturate(1.08)}.chat-main{background:#fbfdfff5;-webkit-backdrop-filter:blur(20px) saturate(1.04);backdrop-filter:blur(20px) saturate(1.04)}.agent-panel{padding:24px;background:#f6f9fff0;-webkit-backdrop-filter:blur(22px) saturate(1.08);backdrop-filter:blur(22px) saturate(1.08)}.logo-mark{display:block;object-fit:cover;object-position:50% 47%;-webkit-user-select:none;user-select:none;pointer-events:none}.product-mark .logo-mark{width:30px;height:30px;border-radius:9px;box-shadow:0 5px 13px #1364ce3d}.product-mark>span{display:flex}.sidebar-heading{margin:0 0 22px}.sidebar-heading h1{font-size:.98rem;letter-spacing:-.015em}.new-conversation{min-height:49px;border-radius:12px;font-size:.94rem;background:linear-gradient(135deg,#006dea,#0084eb);background:linear-gradient(135deg,color(xyz 0.209 0.168 0.856),color(xyz 0.247 0.223 0.987));box-shadow:0 8px 18px #0062d440;box-shadow:0 8px 18px oklch(52% .2 258 / .25)}.new-conversation:hover{translate:0 -1px;box-shadow:0 12px 24px #0062d447;box-shadow:0 12px 24px oklch(52% .2 258 / .28)}.new-conversation:active{translate:0;transform:scale(.985)}.conversation-search{min-height:47px;margin:18px 0 22px;padding:10px 12px;border-color:#dee3eb;border-radius:11px;box-shadow:0 6px 18px #3a485d12}.conversation-search kbd{display:inline-flex;align-items:center;gap:3px;min-width:41px;height:24px;padding:0 6px;color:#4d5663;background:#eef3f9;border:1px solid oklch(89% .015 255);border-radius:6px;box-shadow:inset 0 -1px #bec5cea6;font-family:inherit;font-size:.64rem;line-height:1;white-space:nowrap}.conversation-search kbd span:last-child{font-weight:650}.conversation-nav{gap:12px;padding-right:2px;scrollbar-width:thin;scrollbar-color:oklch(84% .02 255) transparent}.conversation-group{display:grid;gap:4px}.conversation-group>h2{margin:0 2px 5px;color:var(--ink-2);font-size:.76rem;font-weight:650}.conversation-item{grid-template-columns:16px minmax(0,1fr) auto;min-height:44px;padding:9px 10px;border-radius:10px}.conversation-item>svg{color:#4e5f77}.conversation-item.selected>svg{color:var(--accent)}.conversation-item:hover{background:#e8f1fc}.conversation-item.selected{background:linear-gradient(90deg,#dcebff,#e8f3ff);background:linear-gradient(90deg,color(xyz 0.771 0.819 1.141),color(xyz 0.833 0.887 1.102));box-shadow:inset 0 0 0 1px #c7ddf98c}.sidebar-user{width:calc(100% + 12px);min-height:64px;margin:12px -6px -4px;padding:11px 8px;color:var(--ink);background:transparent;border:0;border-top:1px solid var(--line);border-radius:12px;text-align:left}.sidebar-user:hover{background:transparent}.user-avatar{display:grid;place-items:center;flex:0 0 42px;width:42px;height:42px;color:#fff;background:linear-gradient(145deg,#424e61,#6b7c8f);border-radius:50%}.user-copy{flex:1}.chat-header{min-height:80px;padding:15px 36px;border-bottom-color:#e2e7ed;background:#ffffffc7;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.header-agent{width:44px;height:44px;border-radius:50%;filter:drop-shadow(0 5px 10px oklch(52% .16 258 / .22))}.header-copy{display:grid;gap:1px}.header-copy strong{font-size:1.08rem;letter-spacing:-.012em}.header-copy span{font-size:.78rem}.history-link{display:inline-flex;align-items:center;gap:8px;margin-left:auto;padding:7px 8px;color:var(--ink-2);background:transparent;border:0;border-radius:9px;font-size:.84rem;font-weight:550;text-decoration:none;transition:color var(--dur-fast) var(--ease-out),background var(--dur-fast) var(--ease-out),translate var(--dur-fast) var(--ease-out)}.history-link:hover{color:var(--accent);background:var(--accent-tint);translate:0 -1px}.message-viewport{background:linear-gradient(180deg,#fcfdff,#f8fbff);background:linear-gradient(180deg,color(xyz 0.933 0.982 1.093),color(xyz 0.915 0.965 1.092))}.message-list{padding:30px 38px 14px}.message-list .empty-state{min-height:100%}.empty-state{padding:26px 24px 16px}.empty-hero{width:min(100%,560px);max-width:560px;gap:0}.empty-logo-wrap{position:relative;display:grid;place-items:center;width:124px;height:124px;margin-bottom:22px;border-radius:50%;background:radial-gradient(circle,oklch(94% .08 250 / .95),oklch(96% .04 260 / .62) 58%,transparent 72%);animation:logo-float 4.8s ease-in-out infinite}.empty-logo{width:124px;height:124px;border-radius:50%;filter:drop-shadow(0 18px 22px oklch(56% .16 258 / .2))}.empty-logo-wrap>i{position:absolute;width:9px;height:9px;background:#9cc7ff;background:oklch(82% .12 255);rotate:45deg;border-radius:2px;box-shadow:0 0 14px #67aaff8c;box-shadow:0 0 14px oklch(73% .16 255 / .55)}.empty-logo-wrap>i:nth-of-type(1){top:9px;right:13px}.empty-logo-wrap>i:nth-of-type(2){bottom:14px;left:11px;scale:.65;opacity:.6}.empty-hero h2{margin:0;color:#152030;font-size:1.93rem;line-height:1.28;letter-spacing:-.035em}.empty-hero h2>span:first-of-type{color:#0062d4;color:oklch(52% .22 258)}.empty-hero h2>span:last-of-type{display:inline-block;margin-left:4px;font-size:1.55rem;letter-spacing:0}.empty-hero>p{max-width:62ch;margin:12px 0 0;color:var(--muted);font-size:.94rem}.suggestion-list{gap:13px;width:min(100%,500px);margin-top:38px}.suggestion-chip{min-height:68px;padding:12px 18px 12px 14px;border-color:#dce2e9;border-radius:13px;box-shadow:var(--card-shadow);font-size:.95rem;font-weight:520}.suggestion-chip:after{content:none}.suggestion-chip:hover{background:#fff;border-color:#b1cdf2;box-shadow:var(--card-shadow-hover)}.suggestion-chip>span:nth-child(2){flex:1;text-align:left}.suggestion-chip>svg{color:#3280dd}.suggestion-icon{display:grid;place-items:center;flex:0 0 40px;width:40px;height:40px;border-radius:50%}.suggestion-1 .suggestion-icon{color:#076be3;background:#e0ecff;background:oklch(94% .055 258)}.suggestion-2 .suggestion-icon{color:#9a54da;background:#f3eaff;background:oklch(95% .05 305)}.suggestion-3 .suggestion-icon{color:#00915f;color:oklch(58% .17 160);background:#d3f9e3}.composer-wrap{padding:10px 38px 26px;background:linear-gradient(to bottom,transparent,oklch(99.2% .004 255) 22%)}.composer{max-width:796px;min-height:132px;padding:17px 17px 13px 24px;border-color:#d2deed;border-radius:28px;box-shadow:var(--composer-shadow)}.composer:focus-within{border-color:#4e8ce6;box-shadow:0 0 0 3px #3783f01f,var(--composer-shadow)}.composer textarea{min-height:54px;max-height:142px;font-size:.98rem;line-height:1.55}.composer-actions{justify-content:flex-start;min-height:44px;margin-top:6px}.attachment-button{display:inline-grid;place-items:center;width:38px;height:38px;margin-right:auto;color:#4d5c72;background:transparent;border:0;border-radius:50%}.attachment-button:disabled{opacity:.8;cursor:not-allowed}.send-button,.cancel-button{min-width:91px;min-height:44px;padding:9px 18px;font-size:.88rem}.send-button{box-shadow:0 8px 18px #0062d440;box-shadow:0 8px 18px oklch(52% .2 258 / .25)}.send-button:hover:not(:disabled){translate:0 -1px;box-shadow:0 12px 24px #0062d447;box-shadow:0 12px 24px oklch(52% .2 258 / .28)}.composer-hint{max-width:796px;margin-top:9px;padding-left:14px}.agent-panel>h2{display:flex;align-items:center;gap:7px;margin-bottom:29px;font-size:.98rem}.agent-panel>h2 svg{color:#5d84bf}.agent-content{gap:28px}.agent-identity{gap:13px}.agent-identity .logo-mark{width:60px;height:60px;border-radius:50%;filter:drop-shadow(0 8px 15px oklch(52% .16 258 / .18))}.agent-identity strong{font-size:1.02rem}.agent-identity small{margin-top:2px}.agent-content section{gap:12px}.agent-content h3{color:var(--ink);font-size:.82rem}.agent-content p{line-height:1.85}.agent-content ul{display:grid;gap:5px;padding:0;list-style:none}.agent-content li{display:grid;grid-template-columns:19px minmax(0,1fr);align-items:center;gap:9px;min-height:29px}.agent-content li>span{display:grid;place-items:center;color:#3c5e90}.mobile-agent-info>button>span{display:inline-flex;align-items:center;gap:8px}.mobile-agent-chevron{transition:rotate var(--dur-base) var(--ease-out)}.mobile-agent-info[data-state=open] .mobile-agent-chevron{rotate:180deg}@keyframes ambient-a{to{transform:translate3d(12%,14%,0) scale(1.08);opacity:.46}}@keyframes ambient-b{to{transform:translate3d(-14%,9%,0) scale(.94);opacity:.44}}@keyframes ambient-c{to{transform:translate3d(10%,-12%,0) scale(1.06);opacity:.38}}@keyframes logo-float{0%,to{transform:translateY(0)}50%{transform:translateY(-4px)}}@media(max-width:1180px){:root{--sidebar-width: 272px}.app-shell{grid-template-columns:var(--sidebar-width) minmax(0,1fr)}.agent-panel{display:none}.mobile-agent-info{display:block;border-bottom:1px solid var(--line)}.mobile-agent-info>button{width:100%;display:flex;align-items:center;justify-content:space-between;min-height:46px;padding:10px 22px;color:var(--ink-2);background:#f7fafe;border:0;font-size:var(--text-s);font-weight:600}.mobile-agent-info .agent-content{max-height:48vh;padding:18px 28px 24px;overflow-y:auto;background:#f7fafe;border-top:1px solid var(--line)}}@media(max-width:860px){.app-shell{grid-template-columns:minmax(0,1fr)}.conversation-sidebar{position:fixed;inset:14px auto 14px 14px;width:min(86vw,320px);transform:translate(calc(-100% - 28px));visibility:hidden;z-index:var(--z-drawer);transition:transform var(--dur-slow) var(--ease-out),visibility 0s linear var(--dur-slow)}.conversation-sidebar.is-open{visibility:visible;transform:translate(0);transition:transform var(--dur-slow) var(--ease-out)}.drawer-close{display:inline-grid;place-items:center;width:36px;height:36px;color:var(--muted);background:transparent;border:0;border-radius:9px}.menu-button{display:inline-grid;place-items:center}}@media(max-width:767px){body{overflow:hidden}.app-shell{min-height:100dvh;height:100dvh;padding:0;gap:0;background:#fafcfe}.chat-main{border:0;border-radius:0;box-shadow:none}.conversation-sidebar{inset:0 auto 0 0;border-radius:0 22px 22px 0}.chat-header{min-height:62px;padding:9px 14px}.header-agent{width:38px;height:38px}.header-copy strong{font-size:.94rem}.history-link span{display:none}.history-link{margin-left:auto}.mobile-agent-info>button{padding-inline:15px}.empty-state{padding:24px 14px 8px}.empty-logo-wrap,.empty-logo{width:94px;height:94px}.empty-logo-wrap{margin-bottom:17px}.empty-hero h2{font-size:1.48rem}.empty-hero h2>span:last-of-type{font-size:1.2rem}.empty-hero>p{margin-top:9px;font-size:.84rem}.suggestion-list{gap:9px;margin-top:24px}.suggestion-chip{min-height:58px;padding:9px 13px 9px 10px;font-size:.84rem}.suggestion-icon{flex-basis:36px;width:36px;height:36px}.message-list{padding:18px 13px 8px}.composer-wrap{padding:8px 12px calc(12px + env(safe-area-inset-bottom))}.composer{min-height:112px;padding:13px 12px 10px 16px;border-radius:22px}.composer textarea{min-height:44px;font-size:.9rem}.send-button,.cancel-button{min-width:78px;min-height:40px;padding-inline:14px}.composer-hint{display:none}}@media(prefers-reduced-motion:reduce){.ambient-background span,.empty-logo-wrap{animation:none!important}.suggestion-chip,.new-conversation,.send-button,.history-link{translate:none!important;transform:none!important}}