:root{--bg:#0b0b0d;--bg2:#141417;--bg3:#1c1c21;--bd:#2a2a30;--tx:#f5f5f7;--mu:#9a9aa3;--ac:#5cd16b;--ac2:#7dd3fc;--pk:#c084fc;color-scheme:dark}
*{box-sizing:border-box;margin:0}
html{background:var(--bg);scroll-behavior:smooth}
body{font:16px/1.6 -apple-system,"SF Pro Text","Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--tx);background:var(--bg);min-height:100vh;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
nav{position:sticky;top:0;z-index:20;background:rgba(11,11,13,.8);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--bd)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.01em}
.logo i{width:26px;height:26px;border-radius:8px;background:conic-gradient(from 210deg,var(--ac),var(--ac2),var(--pk),var(--ac));display:inline-block;position:relative}
.logo i:after{content:"";position:absolute;inset:6px;border-radius:4px;background:var(--bg)}
nav .links{display:flex;gap:6px;align-items:center}
nav .links a{padding:8px 12px;border-radius:10px;color:var(--mu);font-size:15px}
nav .links a:hover{color:var(--tx);background:var(--bg3)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 20px;border-radius:12px;border:1px solid var(--bd);background:var(--bg3);color:var(--tx);font:inherit;font-weight:600;cursor:pointer;transition:transform .15s,filter .15s,background .15s}
.btn:hover{filter:brightness(1.15);transform:translateY(-1px)}
.btn:active{transform:scale(.97)}
.btn.p{background:var(--ac);color:#06210b;border-color:transparent}
.btn.s{min-height:36px;padding:0 12px;font-size:14px;border-radius:10px}
.hero{padding:88px 0 56px;text-align:center;position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;left:50%;top:-180px;width:900px;height:620px;transform:translateX(-50%);background:radial-gradient(closest-side,rgba(124,211,252,.22),rgba(192,132,252,.14) 45%,transparent 72%);pointer-events:none}
.hero>*{position:relative}
.tag{display:inline-flex;gap:8px;align-items:center;border:1px solid var(--bd);background:var(--bg2);border-radius:99px;padding:6px 14px;font-size:13px;color:var(--mu)}
.tag b{width:7px;height:7px;border-radius:50%;background:var(--ac);box-shadow:0 0 10px var(--ac)}
h1{font-size:clamp(34px,7vw,64px);line-height:1.08;letter-spacing:-.025em;margin:22px auto 16px;max-width:820px}
h1 em{font-style:normal;background:linear-gradient(100deg,var(--ac2),var(--pk) 55%,var(--ac));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{color:var(--mu);font-size:clamp(16px,2.4vw,19px);max-width:600px;margin:0 auto 30px}
.cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
section{padding:56px 0}
h2{font-size:clamp(24px,4vw,34px);letter-spacing:-.015em;margin-bottom:8px}
.sub{color:var(--mu);margin-bottom:28px;max-width:620px}
.grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card{background:var(--bg2);border:1px solid var(--bd);border-radius:18px;padding:22px;display:flex;flex-direction:column;gap:10px;transition:transform .2s,border-color .2s}
a.card:hover{transform:translateY(-3px);border-color:#3b3b44}
.card .ic{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-size:20px;background:var(--bg3);border:1px solid var(--bd)}
.card h3{font-size:18px}.card p{color:var(--mu);font-size:15px}
.badge{align-self:flex-start;font-size:12px;border-radius:99px;padding:3px 10px;border:1px solid var(--bd);color:var(--mu)}
.badge.on{color:var(--ac);border-color:rgba(92,209,107,.4)}
.steps{counter-reset:s;display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.steps div{counter-increment:s;background:var(--bg2);border:1px solid var(--bd);border-radius:18px;padding:22px 22px 22px 66px;position:relative;color:var(--mu);font-size:15px}
.steps div:before{content:counter(s);position:absolute;left:20px;top:20px;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--bg3);color:var(--ac);font-weight:700;border:1px solid var(--bd)}
.steps b{display:block;color:var(--tx);margin-bottom:2px;font-size:16px}
footer{border-top:1px solid var(--bd);padding:28px 0;color:var(--mu);font-size:14px}
footer .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
/* studio */
.app{display:grid;grid-template-rows:auto 1fr auto;height:100dvh}
.top{border-bottom:1px solid var(--bd);background:var(--bg);padding:10px 16px;display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.top .logo{margin-right:auto}
select,input,textarea{font:inherit;color:var(--tx);background:var(--bg2);border:1px solid var(--bd);border-radius:12px;padding:10px 12px;outline:none;max-width:100%}
select:focus,input:focus,textarea:focus{border-color:#4a4a55}
select{min-height:40px;padding:0 10px}
#chat{overflow-y:auto;padding:20px 16px;scroll-behavior:smooth}
.msgs{max-width:780px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.m{display:flex;flex-direction:column;gap:6px;max-width:100%}
.m .r{font-size:12px;color:var(--mu);letter-spacing:.04em;text-transform:uppercase}
.m .b{border-radius:16px;padding:12px 16px;border:1px solid var(--bd);background:var(--bg2);overflow-wrap:anywhere;word-break:break-word}
.m.u .b{background:var(--bg3)}
.m.a .b{border-color:transparent;background:transparent;padding:4px 0}
.b p{margin:0 0 10px}.b p:last-child{margin:0}
.b pre{background:#0f0f12;border:1px solid var(--bd);border-radius:12px;padding:12px;overflow-x:auto;margin:8px 0;font-size:13.5px}
.b code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.92em;background:#0f0f12;border-radius:6px;padding:1px 5px}.b pre code{background:none;padding:0}
.b ul,.b ol{padding-left:22px;margin:0 0 10px}
.b h4{margin:12px 0 6px;font-size:16px}
.acts{display:flex;gap:8px}
.empty{max-width:780px;margin:6vh auto 0;text-align:center}
.empty h2{margin-bottom:6px}
.chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:18px}
.chip{border:1px solid var(--bd);background:var(--bg2);color:var(--tx);padding:9px 14px;border-radius:99px;font:inherit;font-size:14px;cursor:pointer}
.chip:hover{background:var(--bg3)}
.compose{border-top:1px solid var(--bd);padding:12px 16px calc(12px + env(safe-area-inset-bottom));background:var(--bg)}
.compose form{max-width:780px;margin:0 auto;display:flex;gap:10px;align-items:flex-end}
.compose textarea{flex:1;min-height:48px;max-height:180px;resize:none;border-radius:14px}
.note{max-width:780px;margin:8px auto 0;color:var(--mu);font-size:12.5px;text-align:center}
.key{max-width:520px;margin:6vh auto 0;background:var(--bg2);border:1px solid var(--bd);border-radius:20px;padding:26px;display:flex;flex-direction:column;gap:14px}
.key input{width:100%}
.key ul{color:var(--mu);font-size:14px;padding-left:20px}
.err{color:#fca5a5;font-size:14px;min-height:20px}
.hide{display:none!important}
.dots span{display:inline-block;width:6px;height:6px;margin:0 2px;border-radius:50%;background:var(--mu);animation:d 1s infinite}
.dots span:nth-child(2){animation-delay:.15s}.dots span:nth-child(3){animation-delay:.3s}
@keyframes d{0%,60%,100%{opacity:.25}30%{opacity:1}}
@media(max-width:560px){nav .links a.h{display:none}.hero{padding:56px 0 36px}}
@media(max-width:560px){.top{gap:6px;padding:8px 10px}.top .logo{margin-right:0}.top .logo span{display:none}.top select{font-size:14px;min-width:0;flex:1 1 110px;padding:0 6px}.top .btn.s{padding:0 10px;font-size:13px;flex:none}}
.app{width:100%;overflow-x:hidden}
.btn.lang{min-width:44px;padding:0 10px;letter-spacing:.04em;font-weight:600}

.plan ul{list-style:none;display:flex;flex-direction:column;gap:8px;margin-top:6px}.plan li{color:var(--mu);font-size:15px;padding-left:20px;position:relative}.plan li:before{content:"✓";position:absolute;left:0;color:var(--ac)}.plan.pro{border-color:rgba(92,209,107,.45)}