:root{--bg:#0e0f11;--bg2:#14181b;--line:rgba(255,255,255,.09);--tx:#e8eef0;--mut:#9aa5a9;--cy:#00e5ff;--li:#8cff28;--r:18px;--mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;--sans:"Space Grotesk",system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--tx);font-family:var(--sans);line-height:1.55;overflow-x:hidden;-webkit-text-size-adjust:100%}
body:before{content:"";position:fixed;inset:0;z-index:-1;background:radial-gradient(800px 520px at 100% 0%,rgba(0,229,255,.16),transparent 70%),radial-gradient(800px 520px at 0% 100%,rgba(140,255,40,.12),transparent 70%),linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:auto,auto,56px 56px,56px 56px}
a{color:var(--cy);text-decoration:none}a:hover{text-decoration:underline}
img{max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
code,pre,.mono{font-family:var(--mono)}
/* nav */
nav.top{position:sticky;top:0;z-index:10;background:rgba(14,15,17,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
nav.top .wrap{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:21px;color:var(--tx);white-space:nowrap}
.brand:hover{text-decoration:none}.brand img{height:34px;width:34px}.brand b{color:var(--li)}
.links{display:flex;gap:18px;margin-left:auto;align-items:center}
.links a{color:var(--tx);font-size:15px;white-space:nowrap}.links a:hover{color:var(--cy);text-decoration:none}
select.lang{background:var(--bg2);color:var(--tx);border:1px solid var(--line);border-radius:10px;padding:7px 10px;font:inherit;font-size:14px}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;border-radius:50px;font-weight:700;font-size:16px;border:0;cursor:pointer;color:#0e0f11;background:linear-gradient(90deg,var(--cy),var(--li));font-family:inherit;transition:transform .15s,box-shadow .15s}
.btn:hover{text-decoration:none;transform:translateY(-1px);box-shadow:0 8px 30px rgba(0,229,255,.25)}
.btn.sec{background:transparent;color:var(--tx);border:1px solid rgba(0,229,255,.5)}
.btn.sm{padding:8px 16px;font-size:14px}
/* hero */
.hero{padding:72px 0 40px;text-align:center}
.tag{font-family:var(--mono);font-size:13px;color:var(--cy);letter-spacing:3px;text-transform:uppercase}
h1{font-size:clamp(34px,6.2vw,68px);line-height:1.05;letter-spacing:-1.5px;margin:14px 0 14px}
.g{background:linear-gradient(90deg,var(--cy),var(--li));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:clamp(16px,2.2vw,21px);color:var(--mut);max-width:720px;margin:0 auto 26px}
.cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.chips{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:26px}
.chip{border:1px solid var(--line);background:rgba(20,24,27,.8);border-radius:40px;padding:6px 14px;font-size:14px;color:var(--tx)}
.chip:before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--cy);box-shadow:0 0 10px var(--cy);margin-right:8px}
/* sections */
section{padding:56px 0}
h2{font-size:clamp(26px,4vw,40px);letter-spacing:-.8px;margin:0 0 10px;text-align:center}
.sub{color:var(--mut);text-align:center;max-width:680px;margin:0 auto 32px}
.grid{display:grid;gap:16px}
.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}.g5{grid-template-columns:repeat(5,1fr)}.g2{grid-template-columns:repeat(2,1fr)}
.card{background:rgba(20,24,27,.9);border:1px solid var(--line);border-radius:var(--r);padding:22px;min-width:0}
.card h3{margin:0 0 6px;font-size:18px}.card p{margin:0;color:var(--mut);font-size:15px}
.ico{font-size:26px;margin-bottom:10px}
/* code */
.codebox{background:#0a0b0d;border:1px solid rgba(0,229,255,.35);border-radius:14px;overflow:hidden;box-shadow:0 0 40px rgba(0,229,255,.08)}
.codebar{display:flex;align-items:center;gap:6px;padding:8px 10px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.03);flex-wrap:wrap}
.tab{background:transparent;border:0;color:var(--mut);padding:7px 12px;border-radius:8px;cursor:pointer;font:inherit;font-size:14px}
.tab.on{background:rgba(0,229,255,.14);color:var(--cy)}
.copy{margin-left:auto;background:rgba(140,255,40,.14);color:var(--li);border:1px solid rgba(140,255,40,.4);border-radius:8px;padding:6px 14px;cursor:pointer;font:inherit;font-size:13px;font-weight:600}
pre{margin:0;padding:16px;overflow-x:auto;font-size:13px;line-height:1.6;color:#d6f6ff;white-space:pre}
pre.wrapl{white-space:pre-wrap;word-break:break-all}
/* models */
.model{display:flex;flex-direction:column;gap:8px}
.model .fam{font-size:12px;font-family:var(--mono);letter-spacing:1px;text-transform:uppercase;padding:2px 10px;border-radius:20px;align-self:flex-start;border:1px solid}
.fam.opus{color:#ff9af0;border-color:#ff9af0}.fam.sonnet{color:var(--cy);border-color:var(--cy)}.fam.haiku{color:var(--li);border-color:var(--li)}
.model .nm{font-family:var(--mono);font-size:15px;font-weight:600;word-break:break-all}
.pr{display:flex;justify-content:space-between;font-size:14px;color:var(--mut);border-top:1px dashed var(--line);padding-top:6px}.pr b{color:var(--li);font-family:var(--mono)}
.note{color:var(--mut);font-size:13px;text-align:center;margin-top:16px}
/* steps */
.step .n{width:40px;height:40px;border-radius:50%;background:linear-gradient(90deg,var(--cy),var(--li));color:#0e0f11;font-weight:700;display:flex;align-items:center;justify-content:center;margin-bottom:12px;font-size:18px}
/* pricing */
.pack{text-align:center;display:flex;flex-direction:column;gap:6px}
.pack .c{font-size:15px;color:var(--mut)}.pack .big{font-size:30px;font-weight:700;color:var(--li);letter-spacing:-1px}.pack .cr{font-size:24px;font-weight:700}
.pack.hot{border-color:rgba(0,229,255,.7);box-shadow:0 0 36px rgba(0,229,255,.16)}
/* faq */
details{background:rgba(20,24,27,.9);border:1px solid var(--line);border-radius:14px;padding:16px 20px;margin-bottom:10px}
summary{cursor:pointer;font-weight:600;font-size:17px}details p{color:var(--mut);margin:10px 0 0}
footer{border-top:1px solid var(--line);padding:32px 0 44px;color:var(--mut);font-size:14px}
footer .wrap{display:flex;gap:20px;flex-wrap:wrap;justify-content:space-between;align-items:center}
footer .fl{display:flex;gap:18px;flex-wrap:wrap}
/* setup */
.form{display:grid;gap:16px}
label{display:block;font-size:14px;color:var(--mut);margin-bottom:6px}
input[type=password],input[type=text],select.f{width:100%;background:#0a0b0d;color:var(--tx);border:1px solid var(--line);border-radius:12px;padding:12px 14px;font:inherit;font-family:var(--mono);font-size:14px}
input:focus,select:focus{outline:2px solid rgba(0,229,255,.5)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.err{color:#ff7a7a;font-size:14px;min-height:20px}
.warn{border-left:3px solid var(--li);background:rgba(140,255,40,.06);padding:12px 16px;border-radius:0 12px 12px 0;color:var(--tx);font-size:14px}
.warn.red{border-color:#ff7a7a;background:rgba(255,122,122,.07)}
.pagehead{padding:48px 0 16px;text-align:center}
.pagehead h1{font-size:clamp(30px,5vw,48px)}
.stack{display:grid;gap:20px}
details.src summary{font-size:14px;color:var(--mut);font-weight:400}
@media(max-width:900px){.g4,.g5{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:1fr}.links a.hide-s{display:none}}
@media(max-width:560px){.g4,.g5,.g2,.row2{grid-template-columns:1fr}.hero{padding-top:44px}section{padding:40px 0}.links{gap:10px}.links a.nl{display:none}nav.top .wrap{gap:10px}.brand{font-size:18px}.btn{padding:12px 20px}}
/* ---- v2 additions ---- */
:focus-visible{outline:2px solid var(--cy);outline-offset:2px;border-radius:6px}
.skip{position:absolute;left:-999px;top:8px;background:var(--cy);color:#0e0f11;padding:8px 14px;border-radius:8px;z-index:100;font-weight:700}.skip:focus{left:8px;text-decoration:none}
nav.top .wrap{gap:14px}
.links{margin-left:auto;gap:16px}
.links a[aria-current=page]{color:var(--cy)}
.navtoggle{display:none;margin-left:auto;background:var(--bg2);border:1px solid var(--line);color:var(--tx);border-radius:10px;padding:8px 12px;font:inherit;cursor:pointer}
.links .btn.sm{color:#0e0f11}
@media(max-width:1040px){
 .navtoggle{display:inline-flex}
 .links{display:none;position:absolute;left:0;right:0;top:64px;flex-direction:column;align-items:stretch;gap:0;background:rgba(14,15,17,.98);border-bottom:1px solid var(--line);padding:10px 20px 18px;margin:0}
 .links.open{display:flex}
 .links a{padding:12px 4px;border-bottom:1px solid var(--line);font-size:16px}
 .links a.nl{display:block!important}
 .links .btn.sm{margin-top:12px;border:0;padding:13px 18px}
 .links select.lang{margin-top:12px;padding:11px}
}
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.js .reveal.in{opacity:1;transform:none}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@keyframes glow{0%,100%{box-shadow:0 0 20px rgba(0,229,255,.2)}50%{box-shadow:0 0 44px rgba(140,255,40,.3)}}
.herologo{width:96px;height:96px;margin:0 auto 6px;display:block;animation:float 5s ease-in-out infinite;filter:drop-shadow(0 0 22px rgba(0,229,255,.45))}
.card{transition:transform .2s,border-color .2s}
.card:hover{transform:translateY(-3px);border-color:rgba(0,229,255,.4)}
.model{min-width:0}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.js .reveal{opacity:1;transform:none}html{scroll-behavior:auto}}
.pagehead p{color:var(--mut);max-width:680px;margin:8px auto 0}
.panel{background:rgba(20,24,27,.9);border:1px solid var(--line);border-radius:var(--r);padding:24px}
.narrow{max-width:760px;margin:0 auto}
.packs{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
.pk{background:#0a0b0d;border:1px solid var(--line);border-radius:14px;padding:14px 8px;color:var(--tx);cursor:pointer;font:inherit;display:flex;flex-direction:column;gap:4px;transition:border-color .2s,transform .2s}
.pk:hover{border-color:var(--cy);transform:translateY(-2px)}.pk .c{font-weight:700;font-size:18px}.pk .big{color:var(--li);font-size:13px;font-family:var(--mono)}
.result{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:18px 0}
.res{background:#0a0b0d;border:1px solid rgba(0,229,255,.3);border-radius:14px;padding:18px}
.res .k{color:var(--mut);font-size:13px}.res .v{font-size:clamp(22px,4vw,32px);font-weight:700;color:var(--li);font-family:var(--mono);word-break:break-all}
input[type=number]{width:100%;background:#0a0b0d;color:var(--tx);border:1px solid var(--line);border-radius:12px;padding:14px;font:inherit;font-family:var(--mono);font-size:22px}
.kvgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:20px}
.kv{display:flex;flex-direction:column;gap:4px}.kv .k{color:var(--mut);font-size:13px}.kv .v{font-size:24px;font-weight:700;font-family:var(--mono);word-break:break-all}.kv.hot .v{color:var(--li)}
.err.info{color:var(--cy)}
.banner{border-radius:var(--r);padding:22px;text-align:center;border:1px solid;font-size:22px;font-weight:700}
.banner.ok{border-color:rgba(140,255,40,.6);background:rgba(140,255,40,.08);color:var(--li)}
.banner.bad{border-color:#ff7a7a;background:rgba(255,122,122,.08);color:#ff9a9a}
.banner.unk{border-color:rgba(0,229,255,.5);background:rgba(0,229,255,.06);color:var(--cy)}
.banner small{display:block;font-weight:400;font-size:14px;color:var(--mut);margin-top:6px}
.bigstat{font-size:clamp(34px,6vw,54px);font-weight:700;font-family:var(--mono);color:var(--li)}
.bar{display:grid;grid-template-columns:repeat(30,1fr);gap:3px;margin:12px 0}
.cell{height:40px;border-radius:4px;background:#2a3034}.cell.ok{background:var(--li)}.cell.warn{background:#f5c542}.cell.bad{background:#ff6b6b}.cell.nd{background:#2a3034}
.dots{display:flex;flex-wrap:wrap;gap:4px}.dot{width:10px;height:10px;border-radius:50%}.dot.ok{background:var(--li)}.dot.bad{background:#ff6b6b}
.steps ol,.guide ol{padding-left:20px;margin:8px 0}.guide li{margin:6px 0}
.guide code,.inl{background:#0a0b0d;border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-size:13px;word-break:break-all}
.models-ex{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:18px;justify-content:center}
.tabs .tab{border:1px solid var(--line);background:rgba(20,24,27,.9);padding:9px 18px}
.tabs .tab.on{border-color:var(--cy)}
.ostabs{display:flex;gap:6px}
.ostabs .tab{border:1px solid var(--line)}
.ostabs .tab.on{border-color:var(--cy)}
.codebox .hint{padding:10px 16px;color:var(--mut);font-size:13px;border-top:1px solid var(--line)}
.logo-foot{height:28px;vertical-align:middle;margin-right:8px}
hr.sep{border:0;border-top:1px solid var(--line);margin:28px 0}
@media(max-width:700px){.packs{grid-template-columns:repeat(2,1fr)}.result,.kvgrid{grid-template-columns:1fr}.cell{height:30px}.bar{gap:2px}}