:root{--bg:#f6f7fb;--surface:#fff;--soft:#eef1f8;--line:#e3e7f0;--line2:#d5dbe8;--ink:#0e1629;--body:#3d4760;--mut:#69748c;--acc:#0fb58c;--acc-d:#0a8f6f;--blue:#3b7bff;--vio:#8b6cf6;--code:#f3f5fb;--warn:#b7791f;--r:20px;--sh:0 1px 2px rgba(16,24,40,.04),0 8px 24px rgba(16,24,40,.06);--sh2:0 2px 4px rgba(16,24,40,.04),0 24px 60px rgba(30,50,110,.13)}
*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--body);font:16.5px/1.68 Inter,"SF Pro Text",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--acc-d);text-decoration:none;font-weight:550}a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
header.top{position:sticky;top:0;z-index:20;backdrop-filter:saturate(1.4) blur(16px);background:rgba(246,247,251,.82);border-bottom:1px solid rgba(227,231,240,.9)}
header.top .wrap{display:flex;align-items:center;gap:22px;height:66px}
.logo{display:flex;align-items:center;gap:10px;font-weight:780;font-size:18px;color:var(--ink);letter-spacing:-.02em}
.logo svg{width:30px;height:30px}.logo:hover{text-decoration:none}
nav.main{display:flex;gap:2px;margin-left:auto;flex-wrap:wrap}
nav.main a{color:var(--body);padding:8px 13px;border-radius:10px;font-size:15px;font-weight:520}nav.main a:hover{color:var(--ink);background:var(--soft);text-decoration:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 22px;border-radius:14px;font-weight:650;font-size:15.5px;border:1px solid var(--line2);background:var(--surface);color:var(--ink);cursor:pointer;transition:transform .14s,box-shadow .14s,border-color .14s;font-family:inherit;box-shadow:0 1px 2px rgba(16,24,40,.05)}
.btn:hover{transform:translateY(-1px);text-decoration:none;border-color:#b9c3d8;box-shadow:var(--sh)}
.btn.pri{background:linear-gradient(135deg,#12c79a,#2f86ff);color:#fff;border:0;box-shadow:0 10px 26px rgba(38,150,220,.28)}
.btn.pri:hover{box-shadow:0 14px 32px rgba(38,150,220,.36)}
.btn.sm{padding:8px 14px;font-size:13.5px;border-radius:10px}
.btn svg{width:18px;height:18px}

.hero{padding:64px 0 26px;position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;inset:-120px 0 auto 0;height:720px;z-index:-1;background:radial-gradient(620px 380px at 18% 20%,rgba(18,199,154,.16),transparent 65%),radial-gradient(700px 420px at 82% 12%,rgba(59,123,255,.15),transparent 65%),radial-gradient(520px 360px at 55% 62%,rgba(139,108,246,.10),transparent 65%)}
.hero .head{text-align:center;max-width:860px;margin:0 auto}
.pill{display:inline-flex;gap:9px;align-items:center;padding:7px 14px;border:1px solid var(--line);border-radius:99px;font-size:13.5px;color:var(--body);background:rgba(255,255,255,.85);box-shadow:0 1px 2px rgba(16,24,40,.04);font-weight:540}
.pill i{width:8px;height:8px;border-radius:50%;background:var(--acc);box-shadow:0 0 0 4px rgba(15,181,140,.18)}
h1{font-size:clamp(36px,5.2vw,62px);line-height:1.05;letter-spacing:-.035em;margin:20px 0 18px;font-weight:820;color:var(--ink)}
h1 em{font-style:normal;background:linear-gradient(115deg,#0fb58c,#2f86ff 55%,#8b6cf6);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:19px;color:var(--body);max-width:64ch;margin:0 auto 26px}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin:0 0 22px}.hero .cta{justify-content:center}
.endpoint{display:inline-flex;align-items:center;gap:12px;border:1px solid var(--line);background:var(--surface);border-radius:14px;padding:9px 10px 9px 16px;font:14.5px/1.4 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;margin:0 auto 6px;max-width:100%;overflow:auto;box-shadow:var(--sh)}
.endpoint code{white-space:nowrap;color:var(--ink);background:none;border:0;padding:0}.endpoint .tag{color:var(--acc-d);font-weight:750}
.show{display:grid;grid-template-columns:.95fr 1.05fr;gap:26px;align-items:stretch;margin-top:44px}
.art{border-radius:28px;background:linear-gradient(160deg,#fff,#eef3fb);border:1px solid var(--line);box-shadow:var(--sh);display:flex;flex-direction:column;overflow:hidden}
.art img{mix-blend-mode:multiply;width:100%;flex:1;object-fit:cover;min-height:260px}
.facts{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);background:rgba(255,255,255,.75)}
.fact{padding:16px 18px;border-right:1px solid var(--line)}.fact:last-child{border-right:0}
.fact b{display:block;font-size:22px;letter-spacing:-.02em;color:var(--ink)}.fact span{font-size:13px;color:var(--mut)}
.chat{border:1px solid var(--line);border-radius:28px;background:var(--surface);box-shadow:var(--sh2);overflow:hidden;display:flex;flex-direction:column}
.chat .bar{display:flex;align-items:center;gap:9px;padding:15px 20px;border-bottom:1px solid var(--line);font-size:13.5px;color:var(--mut)}
.chat .bar b{color:var(--ink);font-weight:680;font-size:15px}.chat .bar .dot{width:9px;height:9px;border-radius:50%;background:var(--acc);box-shadow:0 0 0 4px rgba(15,181,140,.16)}
.chat .bar span:last-child{margin-left:auto}
#chat-log{height:356px;overflow:auto;padding:20px;display:flex;flex-direction:column;gap:10px;background:linear-gradient(180deg,#fbfcff,#fff)}
.msg{max-width:86%;padding:11px 15px;border-radius:18px;font-size:15.5px;line-height:1.55;overflow-wrap:anywhere}
.msg.user{align-self:flex-end;background:linear-gradient(135deg,#19b9a0,#2f86ff);color:#fff;border-bottom-right-radius:6px}
.msg.bot{align-self:flex-start;background:var(--soft);color:var(--ink);border-bottom-left-radius:6px}
.msg.typing:after{content:"▍";animation:blink 1s steps(2) infinite;color:var(--acc)}
.msg.err{background:#fff1f1;color:#a12b2b}
.msg pre{margin:8px 0;padding:11px;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:auto;font-size:13px}
.msg code{font:13px ui-monospace,Menlo,Consolas,monospace;background:rgba(14,22,41,.07);padding:1px 5px;border-radius:5px;border:0;color:inherit}.msg pre code{background:none;padding:0}
@keyframes blink{50%{opacity:0}}
.chips{display:flex;gap:8px;flex-wrap:wrap;padding:4px 20px 14px}
.chips button{border:1px solid var(--line);background:var(--surface);color:var(--body);border-radius:99px;padding:7px 13px;font:13.5px inherit;font-family:inherit;cursor:pointer;transition:border-color .12s,color .12s}
.chips button:hover{color:var(--acc-d);border-color:var(--acc)}
#chat-form{display:flex;gap:10px;padding:14px;border-top:1px solid var(--line);background:#fafbfe}
#chat-input{flex:1;resize:none;height:48px;padding:12px 15px;border-radius:14px;border:1px solid var(--line2);background:#fff;color:var(--ink);font:15.5px inherit;font-family:inherit;outline:none}
#chat-input:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(59,123,255,.12)}
#chat-send{padding:0 22px;border-radius:14px;border:0;background:linear-gradient(135deg,#12c79a,#2f86ff);color:#fff;font-weight:700;cursor:pointer;font-family:inherit;font-size:15px}
#chat-send:disabled{opacity:.5;cursor:wait}

section{padding:64px 0}
section.alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--acc-d);margin-bottom:10px}
h2{font-size:clamp(28px,3.3vw,40px);letter-spacing:-.028em;line-height:1.14;margin:0 0 14px;font-weight:800;color:var(--ink)}
h3{font-size:19px;letter-spacing:-.012em;margin:0 0 8px;font-weight:720;color:var(--ink)}
.sub{color:var(--mut);max-width:70ch;margin:0 0 32px;font-size:17.5px}
p{margin:0 0 14px}.prose{max-width:78ch}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.cards.two{grid-template-columns:repeat(2,1fr);gap:40px}
.card{border:1px solid var(--line);border-radius:var(--r);padding:24px;background:var(--surface);box-shadow:var(--sh);transition:transform .16s,box-shadow .16s}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh2)}
section.alt .card{background:var(--bg);box-shadow:none}section.alt .card:hover{box-shadow:var(--sh)}
.card p{color:var(--mut);margin:0;font-size:15.5px}
.card.pic{padding:0;overflow:hidden}.card.pic img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#f1f3f8}.card.pic .in{padding:20px 22px 24px}
.card .ic{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;margin-bottom:14px;background:linear-gradient(135deg,rgba(18,199,154,.14),rgba(59,123,255,.14))}
.card .ic svg{width:22px;height:22px;stroke:var(--acc-d)}
.faq{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.faq .q{border:1px solid var(--line);border-radius:var(--r);padding:22px 24px;background:var(--bg)}
.faq .q h3{font-size:18px;margin-bottom:8px}.faq .q p{margin:0;font-size:15.8px}
.codebox{border:1px solid var(--line);border-radius:var(--r);background:var(--code);overflow:hidden;box-shadow:var(--sh)}
.tabs{display:flex;gap:4px;padding:10px 10px 0;border-bottom:1px solid var(--line);background:var(--surface);overflow:auto}
.tabs button{border:0;background:transparent;color:var(--mut);padding:10px 16px;border-radius:10px 10px 0 0;font:14.5px inherit;font-family:inherit;cursor:pointer;white-space:nowrap;font-weight:550}
.tabs button.on{background:var(--code);color:var(--ink);font-weight:700;box-shadow:inset 0 2px 0 var(--acc)}
.tabpane{position:relative}
pre{margin:0;padding:20px 22px;overflow:auto;font:14px/1.65 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:#1d2740;tab-size:2}
pre .c{color:#8a94a8}pre .s{color:#0a7f5f}pre .k{color:#3558d6}
.copy{position:absolute;top:12px;right:12px}
:not(pre)>code{font:.88em ui-monospace,Menlo,Consolas,monospace;background:#eaf0ff;border:1px solid #dbe5ff;padding:1px 6px;border-radius:7px;color:#27408f}
.promptbox{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.promptbox .side{display:flex;flex-direction:column;gap:18px}
.promptbox .side img{border-radius:24px;mix-blend-mode:multiply}
.promptbox pre{max-height:250px;font-size:12.8px;white-space:pre-wrap}
.steps{counter-reset:s;list-style:none;padding:0;margin:0 0 24px}
.steps li{counter-increment:s;position:relative;padding:0 0 16px 50px}
.steps li strong{color:var(--ink)}
.steps li:before{content:counter(s);position:absolute;left:0;top:-3px;width:34px;height:34px;border-radius:11px;display:grid;place-items:center;font-weight:780;font-size:15px;background:linear-gradient(135deg,#12c79a,#2f86ff);color:#fff;box-shadow:0 6px 14px rgba(38,150,220,.25)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.split img{border-radius:24px;mix-blend-mode:multiply}
.split.rev>:first-child{order:2}
table{width:100%;border-collapse:collapse;font-size:15.5px}
.tw{border:1px solid var(--line);border-radius:var(--r);overflow:auto;background:var(--surface);box-shadow:var(--sh)}
th,td{text-align:left;padding:14px 18px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:12.5px;color:var(--mut);font-weight:700;text-transform:uppercase;letter-spacing:.06em;background:#fafbfe}
tr:last-child td{border-bottom:0}td.y{color:var(--acc-d);font-weight:680}td:first-child{color:var(--ink);font-weight:560}
th.hl,td.hl{background:rgba(18,199,154,.06)}
.note{border:1px solid #f1dfb4;padding:14px 18px;background:#fffaf0;border-radius:14px;color:#6b5320;font-size:15.5px;margin:24px 0 0}
footer{padding:36px 0 48px;color:var(--mut);font-size:14.5px;background:var(--surface);border-top:1px solid var(--line)}
footer .wrap{display:flex;gap:18px;flex-wrap:wrap;justify-content:space-between}
footer a{color:var(--body);font-weight:520}
.doc{display:grid;grid-template-columns:220px 1fr;gap:48px;padding:44px 0 70px}
.doc aside{position:sticky;top:90px;align-self:start;font-size:14.5px;border-left:2px solid var(--line);padding-left:16px}
.doc aside a{display:block;color:var(--mut);padding:5px 0;font-weight:520}.doc aside a:hover{color:var(--acc-d);text-decoration:none}
.doc h1{font-size:clamp(30px,3.6vw,44px);margin-top:0}.doc h2{margin-top:44px;font-size:28px}.doc h3{margin-top:26px}
.doc .codebox{margin:14px 0 18px}.doc .tw{margin:14px 0 18px}
@media(max-width:940px){.show,.promptbox,.doc,.split{grid-template-columns:1fr}.split.rev>:first-child{order:0}.cards,.faq,.cards.two{grid-template-columns:1fr}.cards.two{gap:10px}nav.main a.h{display:none}.doc aside{position:static}#chat-log{height:320px}.hero{padding-top:40px}section{padding:48px 0}.art img{max-height:300px}}
@media(max-width:560px){nav.main{display:none}body{font-size:16px}.fact{padding:12px}.fact b{font-size:18px}.endpoint{font-size:12.5px}.wrap{padding:0 16px}}