:root{
  --ink:#0d0f14;
  --ink-2:#161a22;
  --ink-3:#232836;
  --paper:#fbfaf6;
  --tint:#f1efe7;
  --line:#e3e0d5;
  --text:#14161c;
  --muted:#5d6170;
  --lime:#d4ff3a;
  --lime-2:#c2f01c;
  --blue:#3b5bfd;
  --radius:18px;
  --shadow:0 1px 2px rgba(13,15,20,.06),0 8px 24px rgba(13,15,20,.06);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--text);font:16px/1.55 var(--font);overflow-x:hidden}
img,svg{display:block;max-width:100%}
a{color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.12;letter-spacing:-.02em}
h2{font-size:clamp(28px,4vw,44px);font-weight:800;max-width:24ch}
h3{font-size:19px;font-weight:700}
p{margin:0}
code{font-family:var(--mono);font-size:.92em}
:focus-visible{outline:3px solid var(--blue);outline-offset:2px;border-radius:6px}

.wrap{max-width:1180px;margin:0 auto;padding:0 16px}
@media(min-width:720px){.wrap{padding:0 28px}}
.narrow{max-width:820px}
.center{text-align:center;margin-top:36px}
.muted{color:var(--muted)}
.sub{color:var(--muted);font-size:18px;margin-top:14px;max-width:62ch}

/* ---------- кнопки ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 24px;border-radius:999px;border:0;background:var(--ink);color:#fff;font:600 16px/1 var(--font);text-decoration:none;cursor:pointer;transition:transform .15s,background .15s,box-shadow .15s}
.btn:hover{transform:translateY(-1px);background:#000}
.btn--sm{min-height:40px;padding:0 18px;font-size:15px}
.btn--lime{background:var(--lime);color:var(--ink)}
.btn--lime:hover{background:var(--lime-2)}
.btn--ghost{background:transparent;color:#fff;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.28)}
.btn--ghost:hover{background:rgba(255,255,255,.08)}
.btn--wide{width:100%}

/* ---------- шапка ---------- */
.top{position:sticky;top:0;z-index:50;background:rgba(13,15,20,.92);backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);color:#fff;border-bottom:1px solid rgba(255,255,255,.07)}
.top__in{display:flex;align-items:center;gap:24px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;font-size:22px;letter-spacing:-.03em;color:#fff}
.logo b{color:var(--lime)}
.logo__mark{width:32px;height:32px;color:var(--lime)}
.nav{display:flex;gap:26px;margin-left:16px}
.nav a{text-decoration:none;color:rgba(255,255,255,.78);font-size:15px}
.nav a:hover{color:#fff}
.top__cta{margin-left:auto;display:flex;align-items:center;gap:18px}
.top .btn{background:var(--lime);color:var(--ink)}
.link-login{text-decoration:none;font-size:15px;color:rgba(255,255,255,.85)}
.burger{display:none;margin-left:auto;width:44px;height:44px;border:0;background:transparent;cursor:pointer;padding:12px 10px}
.burger span{display:block;height:2px;background:#fff;border-radius:2px;transition:transform .2s}
.burger span+span{margin-top:7px}
.burger[aria-expanded="true"] span:first-child{transform:translateY(4.5px) rotate(45deg)}
.burger[aria-expanded="true"] span:last-child{transform:translateY(-4.5px) rotate(-45deg)}
.mnav{display:flex;flex-direction:column;gap:4px;padding:8px 16px 20px;border-top:1px solid rgba(255,255,255,.07)}
.mnav[hidden]{display:none}
.mnav a{padding:12px 0;text-decoration:none;color:rgba(255,255,255,.88);font-size:17px}
.mnav .btn{margin-top:10px;color:var(--ink)}
@media(max-width:960px){
  .nav,.top__cta{display:none}
  .burger{display:block}
}

/* ---------- первый экран ---------- */
.hero{background:radial-gradient(1200px 520px at 85% -10%,rgba(59,91,253,.35),transparent 60%),radial-gradient(800px 400px at 0% 110%,rgba(212,255,58,.12),transparent 60%),var(--ink);color:#fff;padding:64px 0 48px}
.hero__in{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.pill{display:inline-flex;align-items:center;gap:10px;padding:7px 14px;border-radius:999px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);font-size:14px;color:rgba(255,255,255,.85)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 4px rgba(212,255,58,.18)}
.hero h1{font-size:clamp(36px,5.6vw,64px);font-weight:850;margin-top:22px;letter-spacing:-.035em}
.hl{color:var(--ink);background:var(--lime);padding:0 .14em;border-radius:.16em;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.lead{margin-top:20px;font-size:19px;color:rgba(255,255,255,.78);max-width:54ch}
.hero__btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero__facts{list-style:none;padding:0;margin:34px 0 0;display:flex;flex-wrap:wrap;gap:10px 28px;color:rgba(255,255,255,.65);font-size:15px}
.hero__facts b{color:#fff;font-weight:700}

.code-card{background:#0a0c10;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);box-shadow:0 30px 80px rgba(0,0,0,.45);overflow:hidden;min-width:0}
.code-card__bar{display:flex;align-items:center;gap:7px;padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.07);font:13px var(--mono);color:rgba(255,255,255,.5)}
.code-card__bar i{width:11px;height:11px;border-radius:50%;background:#2c313d}
.code-card__bar span{margin-left:8px}
.code-card pre{margin:0;padding:20px;overflow-x:auto;font:14px/1.65 var(--mono);color:#dfe3ee}
.k{color:#c792ea}.s{color:var(--lime)}.c{color:#6c7489}.n{color:#f78c6c}

.strip__title{margin-top:56px;font-size:14px;color:rgba(255,255,255,.5);text-transform:uppercase;letter-spacing:.08em}
.strip{list-style:none;padding:0;margin:16px 0 0;display:flex;flex-wrap:wrap;gap:10px}
.strip li{padding:10px 18px;border-radius:12px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.09);font-weight:600;font-size:15px;color:rgba(255,255,255,.9)}

/* ---------- секции ---------- */
.sec{padding:96px 0}
.sec--tint{background:var(--tint)}
.sec--dark{background:var(--ink);color:#fff}
.sec--dark .sub{color:rgba(255,255,255,.7)}
@media(max-width:720px){.sec{padding:64px 0}.hero{padding:40px 0 36px}}

.cards5{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-top:44px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.card h3{margin-top:18px}
.card p{margin-top:10px;color:var(--muted);font-size:15px}
.ico{width:44px;height:44px;border-radius:12px;background:var(--ink);display:grid;place-items:center}
.ico svg{width:22px;height:22px;fill:none;stroke:var(--lime);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
@media(max-width:1100px){.cards5{grid-template-columns:repeat(3,1fr)}}
@media(max-width:760px){.cards5{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.cards5{grid-template-columns:1fr}}

.promise{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.promise__head p{margin-top:16px;font-size:19px}
.promise__list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.promise__list li{display:flex;gap:18px;align-items:baseline;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;font-size:20px;font-weight:600;letter-spacing:-.01em}
.promise__list span{font:700 14px var(--mono);color:var(--blue)}
@media(max-width:860px){.promise{grid-template-columns:1fr;gap:28px}}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:40px}
.step{border-top:2px solid var(--ink);padding-top:18px}
.step b{font:700 15px var(--mono);color:var(--blue)}
.step h3{margin-top:10px}
.step p{margin-top:8px;color:var(--muted)}
.step code{background:var(--tint);padding:1px 6px;border-radius:6px;word-break:break-all}
@media(max-width:760px){.steps{grid-template-columns:1fr}}

.tabs{margin-top:40px;background:var(--ink);border-radius:var(--radius);overflow:hidden;min-width:0}
.tabs__bar{display:flex;gap:4px;padding:10px 10px 0;border-bottom:1px solid rgba(255,255,255,.08);align-items:center;flex-wrap:wrap}
.tabs__bar button{border:0;background:transparent;color:rgba(255,255,255,.6);font:600 14px var(--font);padding:10px 14px;border-radius:10px 10px 0 0;cursor:pointer}
.tabs__bar button[aria-selected="true"]{color:var(--ink);background:var(--lime)}
.tabs__bar .copy{margin-left:auto;border-radius:10px;margin-bottom:8px;background:rgba(255,255,255,.08);color:#fff}
.tabs__pane{margin:0;padding:22px;overflow-x:auto;font:14px/1.7 var(--mono);color:#dfe3ee}
.tools{margin-top:20px;color:var(--muted);font-size:15px;max-width:80ch}

.models{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:40px}
.model{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.model p{margin-top:8px;color:var(--muted);font-size:15px}
.note{margin-top:22px;color:var(--muted);font-size:15px}
@media(max-width:1000px){.models{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.models{grid-template-columns:1fr}}

.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split .btn{margin-top:30px}
@media(max-width:900px){.split{grid-template-columns:1fr;gap:40px}.split--rev>:last-child{order:-1}}

.checks{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:12px}
.checks li{position:relative;padding-left:34px;font-size:17px}
.checks li::before{content:"";position:absolute;left:0;top:2px;width:22px;height:22px;border-radius:50%;background:var(--lime) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230d0f14' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 12 4 4 8-8'/%3E%3C/svg%3E") center/14px no-repeat}
.checks--light li{color:rgba(255,255,255,.88)}

/* стопка документов */
.docs{position:relative;height:380px;max-width:420px;width:100%;justify-self:center}
.doc{position:absolute;inset:0 24px 24px 0;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:26px}
.doc--back{transform:translate(24px,24px) rotate(4deg);background:var(--tint)}
.doc--mid{transform:translate(12px,12px) rotate(2deg);background:#f7f6f1}
.doc__head{display:flex;justify-content:space-between;align-items:center;font:700 13px var(--mono);letter-spacing:.12em;color:var(--muted)}
.doc__tag{background:var(--lime);color:var(--ink);padding:3px 8px;border-radius:6px;letter-spacing:.04em}
.doc__title{margin-top:22px;font-size:21px;font-weight:700;letter-spacing:-.01em}
.doc__meta{margin-top:4px;color:var(--muted);font-size:14px}
.doc__rows{margin-top:24px;display:grid;gap:14px}
.doc__rows div{display:flex;align-items:center;gap:14px;font-size:15px}
.doc__rows span{width:78px}
.doc__rows i{flex:1;height:8px;border-radius:4px;background:var(--tint)}
.doc__sum{position:absolute;left:26px;right:26px;bottom:24px;display:flex;justify-content:space-between;border-top:1px dashed var(--line);padding-top:16px;font-size:15px}
.doc__sum span{color:var(--muted)}

.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:40px}
.feat{border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:24px;background:var(--ink-2)}
.feat h3{color:var(--lime)}
.feat p{margin-top:10px;color:rgba(255,255,255,.72);font-size:15px}
@media(max-width:1000px){.grid4{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.grid4{grid-template-columns:1fr}}

.nums{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:40px}
.nums div{border-top:2px solid var(--ink);padding-top:18px}
.nums b{display:block;font-size:clamp(44px,6vw,72px);font-weight:850;letter-spacing:-.04em;line-height:1}
.nums span{display:block;margin-top:10px;color:var(--muted)}
@media(max-width:860px){.nums{grid-template-columns:1fr 1fr;gap:28px 16px}}

.quote{background:var(--ink);color:#fff;border-radius:24px;padding:36px}
.quote p{font-size:22px;font-weight:700;letter-spacing:-.01em}
.quote ul{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:10px}
.quote li{padding:14px 18px;border-radius:12px;background:rgba(255,255,255,.06);font-size:17px}
.quote li::before{content:"→ ";color:var(--lime)}

/* FAQ */
details{border-bottom:1px solid var(--line)}
details:first-of-type{margin-top:32px;border-top:1px solid var(--line)}
summary{list-style:none;cursor:pointer;padding:22px 44px 22px 0;font-size:18px;font-weight:650;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"";position:absolute;right:6px;top:50%;width:12px;height:12px;border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);transform:translateY(-70%) rotate(45deg);transition:transform .2s}
details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
details p{padding:0 0 22px;color:var(--muted);max-width:70ch}
details code{background:var(--tint);padding:1px 6px;border-radius:6px}

/* форма */
.form{background:#fff;color:var(--text);border-radius:24px;padding:28px;display:grid;gap:14px;box-shadow:0 30px 80px rgba(0,0,0,.35)}
.seg{display:grid;grid-template-columns:1fr 1fr;background:var(--tint);border-radius:12px;padding:4px}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg span{display:block;text-align:center;padding:10px 6px;border-radius:9px;font-weight:600;font-size:15px;cursor:pointer;color:var(--muted)}
.seg input:checked+span{background:#fff;color:var(--ink);box-shadow:var(--shadow)}
.seg input:focus-visible+span{outline:3px solid var(--blue)}
.fld{display:grid;gap:6px}
.fld span{font-size:14px;font-weight:600;color:var(--muted)}
.fld input,.fld select{width:100%;min-height:48px;border:1.5px solid var(--line);border-radius:12px;padding:0 14px;font:16px var(--font);color:var(--text);background:#fff}
.fld input:focus,.fld select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(59,91,253,.15)}
.fld input.bad{border-color:#e5484d}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:480px){.row2{grid-template-columns:1fr}.form{padding:22px 18px}}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.agree{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--muted);line-height:1.45}
.agree input{width:18px;height:18px;margin:1px 0 0;flex:none;accent-color:var(--ink)}
.agree.bad span{color:#e5484d}
.form__msg{font-size:15px;min-height:1.2em}
.form__msg.ok{color:#1a7f37;font-weight:600}
.form__msg.err{color:#e5484d}

/* подвал */
.foot{background:var(--ink-2);color:rgba(255,255,255,.7);padding:56px 0 28px;font-size:15px}
.foot__in{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.foot h4{color:#fff;font-size:15px;margin-bottom:12px}
.foot a{display:block;text-decoration:none;padding:4px 0}
.foot a:hover{color:#fff}
.foot__brand p{margin-top:14px;max-width:30ch}
.logo--light{padding:0}
.foot__legal{margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);display:grid;gap:8px;font-size:13px;color:rgba(255,255,255,.45)}
@media(max-width:760px){.foot__in{grid-template-columns:1fr 1fr}.foot__brand{grid-column:1/-1}}

/* документы (privacy) */
.doc-page{padding:56px 0 96px}
.doc-page h1{font-size:clamp(30px,4vw,42px);font-weight:800}
.doc-page h2{font-size:22px;margin-top:36px;max-width:none}
.doc-page p,.doc-page li{margin-top:12px;color:#33363f;max-width:75ch}
.doc-page .todo{background:#fff4c2;padding:0 4px;border-radius:4px}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
@media(max-width:960px){.hero__in{grid-template-columns:1fr;gap:36px}}