:root{--bg:#f5f7f9;--glass:rgba(255,255,255,.7);--glass2:rgba(15,23,42,.05);--line:rgba(15,23,42,.08);--line2:rgba(15,23,42,.13);--ink:#0e1621;--muted:#556170;--dim:#8a95a3;--accent:#0a9d6a;--accent2:#1a9bd7;--accent-ink:#fff;--glow:rgba(18,196,138,.32);--bad:#d93636;--code:rgba(15,23,42,.05);--grad:linear-gradient(135deg,#12c48a,#1fa6e0);--r:16px;--top:60px;--display:"Space Grotesk",system-ui,sans-serif;color-scheme:light}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{background:var(--bg);color:var(--ink);font:15.5px/1.65 Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased;position:relative}
body:before{content:"";position:fixed;inset:0;z-index:-1;background:linear-gradient(160deg,#ffffff 0%,#f3f7f9 45%,#e9f5f1 100%)}
::selection{background:rgba(18,196,138,.25)}
a{color:var(--accent)}
button,input,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.top{position:sticky;top:0;z-index:30;height:var(--top);display:flex;align-items:center;gap:14px;padding:0 18px;background:rgba(245,247,249,.75);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);min-width:0}
.logo{display:grid;place-items:center;width:32px;height:32px;border-radius:10px;background:var(--grad);color:var(--accent-ink);font:700 1rem var(--display);box-shadow:0 4px 16px -2px var(--glow),inset 0 1px 0 rgba(255,255,255,.45)}
.name{font:700 1.18rem var(--display);letter-spacing:-.02em}
.slogan{color:var(--muted);font:500 .74rem var(--display);text-transform:uppercase;letter-spacing:.16em;padding-left:12px;border-left:1px solid var(--line2);white-space:nowrap}
.nav{margin-left:auto;display:flex;align-items:center;gap:16px}
.nav a{font-size:.88rem;text-decoration:none;color:var(--muted);transition:color .15s}
.nav a:hover{color:var(--ink)}
.load{display:flex;align-items:center;justify-content:center;width:32px;height:32px;cursor:help}
.load svg{width:24px;height:24px;flex:none;overflow:visible}
.load .seg{fill:none;stroke:rgba(15,23,42,.12);stroke-width:2.4;stroke-linecap:round;stroke-dasharray:14.6 45.1;transform-origin:12px 12px;transition:stroke .4s,filter .4s}
.load .s1{transform:rotate(-81deg)}
.load .s2{transform:rotate(39deg)}
.load .s3{transform:rotate(159deg)}
.load .core{fill:#12c48a;opacity:0;transform-origin:12px 12px;transform:scale(.4);transition:opacity .4s,transform .4s}
.load[data-l="1"] .s1,.load[data-l="2"] .s1,.load[data-l="2"] .s2,.load[data-l="3"] .seg{stroke:#12c48a;filter:drop-shadow(0 0 2px var(--glow))}
.load[data-l="3"] .core{opacity:1;transform:scale(1);filter:drop-shadow(0 0 5px var(--glow))}
.load[data-l="3"] svg{animation:breathe 2.4s ease-in-out infinite}
@keyframes breathe{50%{transform:scale(1.08)}}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 18px;border-radius:999px;border:0;background:var(--grad);color:var(--accent-ink)!important;text-decoration:none;font-weight:600;font-size:.88rem;cursor:pointer;box-shadow:0 6px 18px -6px var(--glow);transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-1px);box-shadow:0 10px 26px -6px var(--glow)}
.btn.ghost{background:var(--glass);color:var(--ink)!important;box-shadow:0 0 0 1px var(--line2) inset}
.btn.ghost:hover{box-shadow:0 0 0 1px rgba(15,23,42,.25) inset}
.btn.bad{background:transparent;color:var(--bad)!important;box-shadow:0 0 0 1px rgba(217,54,54,.45) inset}
.btn.wide{width:100%;padding:12px}
.burger{display:none;width:38px;height:38px;border:0;background:none;padding:11px 9px;cursor:pointer;flex-direction:column;justify-content:space-between}
.burger span{display:block;height:1.5px;background:var(--ink);border-radius:2px}
.p-home{overflow:hidden}
.app{display:flex;height:calc(100dvh - var(--top))}
.side{width:276px;flex:none;display:flex;flex-direction:column;background:rgba(255,255,255,.55);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-right:1px solid var(--line);padding:16px 12px 0}
.newchat{display:flex;align-items:center;gap:9px;width:100%;padding:11px 14px;border:1px solid var(--line2);border-radius:12px;background:var(--glass);cursor:pointer;font-weight:600;font-size:.92rem;transition:border-color .15s,box-shadow .15s}
.newchat:hover{border-color:rgba(18,196,138,.5);box-shadow:0 0 18px -6px var(--glow)}
.newchat svg,#send svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}
.newchat svg{color:var(--accent)}
.side-h{margin:22px 8px 8px;font:600 .68rem var(--display);text-transform:uppercase;letter-spacing:.18em;color:var(--dim)}
.convs{list-style:none;margin:0;padding:0;overflow-y:auto;flex:1;scrollbar-width:thin}
.convs:empty{display:none}
.convs li{display:flex;align-items:center;border-radius:10px;position:relative;transition:background .15s}
.convs li:hover{background:var(--glass)}
.convs li.on{background:var(--glass2)}
.convs li.on:before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:2px;border-radius:2px;background:var(--grad);box-shadow:0 0 8px var(--glow)}
.conv{flex:1;min-width:0;text-align:left;border:0;background:none;padding:8px 12px;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:.88rem;color:var(--muted)}
.convs li.on .conv,.conv:hover{color:var(--ink)}
.convs .del{border:0;background:none;color:var(--dim);cursor:pointer;padding:4px 10px;font-size:1.05rem;opacity:0}
.convs .del:hover{color:var(--bad)}
.convs li:hover .del,.convs li.on .del{opacity:1}
.convs-empty{margin:4px 10px;color:var(--dim);font-size:.85rem;flex:1}
.side .foot{border-top:1px solid var(--line);padding:14px 6px;margin:0;flex-direction:column;align-items:flex-start;gap:5px}
.chat{flex:1;display:flex;flex-direction:column;min-width:0;position:relative}
.msgs{flex:1;overflow-y:auto;padding:32px 18px 14px;scroll-behavior:smooth;scrollbar-width:thin;scrollbar-color:rgba(15,23,42,.15) transparent}
.msgs>*{max-width:780px;margin-left:auto;margin-right:auto}
.intro{padding:0 0 10px}
.kicker{display:inline-flex;align-items:center;gap:8px;font:600 .7rem var(--display);text-transform:uppercase;letter-spacing:.2em;color:var(--accent);margin:0 0 16px;padding:5px 12px;border:1px solid rgba(18,196,138,.25);border-radius:999px;background:rgba(18,196,138,.06)}
.kicker:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px var(--accent)}
.intro h1{font:700 clamp(2.1rem,5vw,3.4rem)/1.04 var(--display);letter-spacing:-.035em;margin:0 0 16px}
.intro h1 span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:1.06rem;color:var(--muted);margin:0 0 26px;max-width:58ch}
.ex{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:40px}
.chip{border:1px solid var(--line2);background:var(--glass);border-radius:12px;padding:9px 14px;cursor:pointer;font-size:.88rem;text-align:left;color:var(--ink);transition:border-color .15s,background .15s,transform .15s}
.chip:hover{border-color:rgba(18,196,138,.5);background:rgba(18,196,138,.06);transform:translateY(-1px)}
.feats{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.feats li{position:relative;background:linear-gradient(180deg,#fff,rgba(255,255,255,.6));border:1px solid var(--line);border-radius:var(--r);padding:18px;overflow:hidden}
.feats li:before{content:"";position:absolute;left:18px;right:18px;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(18,196,138,.6),transparent)}
.feats h2{font:600 .98rem var(--display);margin:0 0 6px;letter-spacing:-.01em}
.feats p{margin:0;color:var(--muted);font-size:.88rem}
.msg{margin-bottom:24px;display:flex;flex-direction:column;animation:rise .25s ease-out}
@keyframes rise{from{opacity:0;transform:translateY(6px)}}
.msg.user{align-items:flex-end}
.msg.user .body{background:linear-gradient(135deg,rgba(18,196,138,.16),rgba(76,201,255,.12));border:1px solid rgba(18,196,138,.22);padding:10px 16px;border-radius:18px 18px 4px 18px;max-width:85%;white-space:pre-wrap;overflow-wrap:anywhere}
.msg.assistant{padding-left:38px;position:relative}
.msg.assistant:before{content:"1";position:absolute;left:0;top:2px;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;background:var(--grad);color:var(--accent-ink);font:700 .78rem var(--display);box-shadow:0 0 14px -2px var(--glow)}
.msg.assistant .body{overflow-wrap:anywhere}
.msg.assistant .body>:first-child{margin-top:0}
.msg.assistant .body>:last-child{margin-bottom:0}
.msg.err .body{color:var(--bad)}
.body h1,.body h2,.body h3,.body h4{font-family:var(--display);line-height:1.3;margin:1.2em 0 .4em;letter-spacing:-.01em}
.body h1{font-size:1.35rem}.body h2{font-size:1.2rem}.body h3,.body h4{font-size:1.04rem}
.body p{margin:.6em 0}
.body strong{color:#0b1220}
.body ul,.body ol{padding-left:1.3em;margin:.5em 0}
.body li{margin:.25em 0}
.body li::marker{color:var(--accent)}
.body code{background:var(--code);border:1px solid var(--line);padding:.08em .38em;border-radius:6px;font:.86em/1.5 "JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:#0a7a54}
.body pre{background:#f0f3f6;border:1px solid var(--line);border-radius:12px;padding:14px 16px;overflow-x:auto}
.body pre code{background:none;border:0;padding:0;color:var(--ink)}
.body blockquote{margin:.6em 0;padding:.1em 1em;border-left:2px solid var(--accent);color:var(--muted)}
.body table{border-collapse:collapse;display:block;overflow-x:auto;margin:.8em 0;font-size:.92rem}
.body th,.body td{border:1px solid var(--line2);padding:7px 11px;text-align:left;vertical-align:top}
.body th{background:var(--glass2);font-family:var(--display);font-weight:600}
.body hr{border:0;border-top:1px solid var(--line2);margin:1.2em 0}
.cite{display:inline-grid;place-items:center;min-width:1.4em;height:1.4em;padding:0 4px;border-radius:6px;background:rgba(18,196,138,.12);border:1px solid rgba(18,196,138,.3);color:var(--accent);font:700 .68em var(--display);text-decoration:none;vertical-align:.15em;transition:background .15s}
.cite:hover{background:rgba(18,196,138,.25)}
.srcs{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}
.srcs a{display:flex;align-items:center;gap:7px;max-width:260px;padding:5px 11px;border:1px solid var(--line2);border-radius:999px;background:var(--glass);font-size:.78rem;color:var(--muted);text-decoration:none;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:border-color .15s,color .15s}
.srcs a:hover{border-color:rgba(18,196,138,.5);color:var(--ink)}
.srcs b{color:var(--accent);font-family:var(--display)}
.status{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:.86rem;margin-bottom:6px}
.status:empty{display:none}
.status:before{content:"";width:14px;height:14px;border-radius:50%;border:2px solid rgba(18,196,138,.2);border-top-color:var(--accent);animation:spin .8s linear infinite;flex:none}
@keyframes spin{to{transform:rotate(360deg)}}
.tools{display:flex;gap:6px;margin-top:8px;opacity:0;transition:opacity .15s}
.msg.assistant:hover .tools{opacity:1}
.tools button{border:1px solid transparent;background:none;color:var(--dim);font-size:.76rem;cursor:pointer;padding:3px 9px;border-radius:7px}
.tools button:hover{border-color:var(--line2);color:var(--ink)}
.dock{padding:0 18px 12px;background:linear-gradient(transparent,var(--bg) 40%)}
.composer{max-width:780px;margin:0 auto;display:flex;align-items:flex-end;gap:8px;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--line2);border-radius:20px;padding:8px 8px 8px 18px;box-shadow:0 18px 40px -22px rgba(15,23,42,.35);transition:border-color .2s,box-shadow .2s}
.composer:focus-within{border-color:rgba(18,196,138,.55);box-shadow:0 0 0 4px rgba(18,196,138,.08),0 0 32px -8px var(--glow),0 18px 40px -22px rgba(15,23,42,.35)}
#input{flex:1;border:0;outline:0;background:none;resize:none;max-height:200px;padding:8px 0;line-height:1.5}
#input::placeholder{color:var(--dim)}
#send{flex:none;width:38px;height:38px;border-radius:12px;border:0;background:var(--grad);color:var(--accent-ink);display:grid;place-items:center;cursor:pointer;box-shadow:0 0 18px -4px var(--glow);transition:transform .15s,opacity .15s}
#send:hover{transform:scale(1.05)}
#send:disabled{opacity:.35;cursor:default;transform:none;box-shadow:none}
.disc{text-align:center;color:var(--dim);font-size:.72rem;margin:8px 0 0}
.toast{position:fixed;left:50%;bottom:96px;transform:translate(-50%,20px);background:rgba(255,255,255,.96);border:1px solid rgba(18,196,138,.4);box-shadow:0 0 24px -6px var(--glow);color:var(--ink);padding:9px 16px;border-radius:999px;font-size:.85rem;opacity:0;pointer-events:none;transition:.25s;max-width:90vw;z-index:50}
.toast.on{opacity:1;transform:translate(-50%,0)}
.veil{display:none}
.page{max-width:760px;margin:0 auto;padding:44px 18px 20px}
.page.narrow{max-width:420px}
.page h1{font:700 2rem/1.15 var(--display);letter-spacing:-.03em;margin:0 0 22px}
.prose h2{font:600 1.12rem var(--display);margin:1.8em 0 .4em}
.prose p,.prose li{color:#3a4452}
.prose li{margin:.35em 0}
.prose code{background:var(--code);border:1px solid var(--line);padding:.05em .35em;border-radius:5px;font-size:.88em}
.form{display:flex;flex-direction:column;gap:15px;padding:24px;background:var(--glass);border:1px solid var(--line);border-radius:var(--r)}
.form label{display:flex;flex-direction:column;gap:6px;font-size:.84rem;font-weight:500;color:var(--muted)}
.form input,.addmem input{padding:11px 14px;border:1px solid var(--line2);border-radius:11px;background:#fff;font-weight:400;color:var(--ink);transition:border-color .15s,box-shadow .15s}
.form input:focus,.addmem input:focus{outline:0;border-color:rgba(18,196,138,.6);box-shadow:0 0 0 4px rgba(18,196,138,.1)}
.alert,.ok{padding:10px 14px;border-radius:11px;font-size:.9rem}
.alert{background:#fdecec;border:1px solid rgba(217,54,54,.3);color:#a32020}
.ok{background:rgba(18,196,138,.08);border:1px solid rgba(18,196,138,.3);color:var(--accent)}
.note,.muted{color:var(--muted);font-size:.88rem}
.switch{margin-top:18px;color:var(--muted)}
.card{background:var(--glass);border:1px solid var(--line);border-radius:var(--r);padding:20px 22px;margin-bottom:16px}
.card h2{font:600 1.08rem var(--display);margin:0 0 6px}
.card p{margin:.4em 0}
.row{display:flex;gap:10px;flex-wrap:wrap}
.mems{list-style:none;padding:0;margin:12px 0}
.mems li{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 0;border-bottom:1px solid var(--line)}
.mems form{margin:0}
.x{border:0;background:none;color:var(--dim);font-size:1.3rem;cursor:pointer;line-height:1;padding:0 6px}
.x:hover{color:var(--bad)}
.addmem{display:flex;gap:8px;margin-top:14px}
.addmem input{flex:1;min-width:0}
.danger{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
.foot{display:flex;flex-wrap:wrap;gap:6px 18px;justify-content:center;font-size:.78rem;color:var(--dim);padding:26px 18px;max-width:760px;margin:0 auto}
.foot a{color:var(--muted);text-decoration:none}
.foot a:hover{color:var(--accent)}
.center{text-align:center}
.big{font:700 5rem/1 var(--display);background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin:0 0 10px}
@media (max-width:860px){.feats{grid-template-columns:1fr}.slogan{display:none}}
@media (max-width:760px){.burger{display:flex}.side{position:fixed;top:var(--top);left:0;bottom:0;z-index:40;transform:translateX(-100%);transition:transform .22s;background:rgba(255,255,255,.97)}.side.open{transform:none}.veil.on{display:block;position:fixed;inset:var(--top) 0 0;background:rgba(15,23,42,.3);z-index:35}.nav-mem{display:none}.nav{gap:10px}.top{padding:0 12px;gap:8px}.msg.user .body{max-width:92%}.msg.assistant{padding-left:0}.msg.assistant:before{display:none}.tools{opacity:1}.intro{padding-top:0}.kicker{font-size:.62rem;letter-spacing:.12em}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}