/* unrestrictedaimodels.com - glass monolith */
:root{--bg:#070b12;--ink:#eaf4f6;--txt:#d2e1e5;--mut:#a6bac1;--aq:#5ff2ee;--aq2:#a4f8f5;--in:#7f7bff;--line:rgba(170,240,245,.16);--line2:rgba(170,240,245,.28);--well:rgba(3,8,14,.6);--pad:44px;--os:64px;--w:720px;
--fd:"Gabarito","Geist",system-ui,sans-serif;--ft:"Geist",system-ui,-apple-system,"Segoe UI",sans-serif;--fm:"Azeret Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace}
*,*::before,*::after{box-sizing:border-box}
html{background:var(--bg);-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font:17px/1.65 var(--ft);color:var(--txt);overflow-x:hidden;overflow-x:clip;min-height:100vh;padding:10px 0 56px;-webkit-font-smoothing:antialiased}
[hidden]{display:none!important}
[id]{scroll-margin-top:92px}
img,svg{max-width:100%}
a{color:var(--aq)}
h1,h2,h3{font-family:var(--fd);color:var(--ink);margin:0;letter-spacing:-.015em;text-wrap:balance}
p{margin:0 0 1em}
:focus-visible{outline:2px solid var(--aq);outline-offset:3px;border-radius:6px}
::selection{background:rgba(95,242,238,.3);color:#fff}
.skip{position:absolute;left:-999px;top:8px;z-index:99;background:var(--aq);color:#031a1c;padding:12px 16px;border-radius:10px;font-weight:600}
.skip:focus{left:12px}

/* sky: sharp shapes in the margins, frosted through the slab */
.sky{position:fixed;inset:0;z-index:-1;pointer-events:none;background:radial-gradient(62% 48% at 12% 0,rgba(18,112,122,.5),transparent 70%),radial-gradient(48% 46% at 98% 62%,rgba(58,48,170,.42),transparent 70%),radial-gradient(40% 30% at 20% 100%,rgba(16,90,110,.3),transparent 70%),var(--bg)}
.sky svg{position:absolute;inset:0;width:100%;height:100%;max-width:none}
.sky .r1{stroke:rgba(95,242,238,.24)}.sky .r2{stroke:rgba(95,242,238,.5)}.sky .r3{stroke:rgba(127,123,255,.3)}.sky .r4{stroke:rgba(95,242,238,.1)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:46px;padding:0 20px;border:0;border-radius:12px;background:linear-gradient(180deg,#9afaf6,#3fd9d5);color:#031a1c;font:600 15px/1.2 var(--ft);text-decoration:none;cursor:pointer;box-shadow:inset 0 1px 0 rgba(255,255,255,.55),0 8px 28px -6px rgba(95,242,238,.45);transition:transform .15s,box-shadow .15s,background .15s;text-align:center}
.btn:hover{transform:translateY(-1px);box-shadow:inset 0 1px 0 rgba(255,255,255,.6),0 12px 36px -6px rgba(95,242,238,.6)}
.btn:disabled{opacity:.6;cursor:wait;transform:none}
.btn.big{min-height:54px;padding:0 26px;font-size:16.5px;border-radius:14px}
.btn.sm{min-height:44px;padding:0 15px;font-size:14px}
.btn.ghost{background:rgba(255,255,255,.05);color:var(--ink);box-shadow:inset 0 0 0 1px var(--line2)}
.btn.ghost:hover{background:rgba(95,242,238,.1);box-shadow:inset 0 0 0 1px var(--aq)}
.arw{flex:none}

/* cap (header) */
.cap{position:sticky;top:10px;z-index:50;width:min(var(--w),100% - 24px);margin:0 auto}
.cap-in{position:relative;display:flex;align-items:center;gap:8px;min-height:62px;padding:8px 8px 8px 16px;border-radius:18px;background:linear-gradient(180deg,rgba(150,235,240,.1),rgba(140,170,255,.05)),rgba(8,14,22,.72);border:1px solid var(--line2);box-shadow:inset 0 1px 0 rgba(255,255,255,.12),0 14px 40px -10px rgba(0,0,0,.7);-webkit-backdrop-filter:blur(22px) saturate(150%);backdrop-filter:blur(22px) saturate(150%)}
.logo{display:inline-flex;align-items:center;gap:9px;min-height:44px;min-width:0;color:var(--ink);text-decoration:none;font:700 18px/1 var(--fd);letter-spacing:-.01em;white-space:nowrap}
.logo span{overflow:hidden;text-overflow:ellipsis}
.mark{flex:none;color:var(--aq);filter:drop-shadow(0 0 8px rgba(95,242,238,.55))}
.nav{display:flex;align-items:center;margin-left:auto}
.nav a{position:relative;display:inline-flex;align-items:center;min-height:44px;padding:0 12px;color:var(--mut);text-decoration:none;font-weight:500;font-size:15px;border-radius:10px;transition:color .15s}
.nav a:hover{color:var(--ink)}
.nav a[aria-current]{color:var(--ink)}
.nav a[aria-current]::after{content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;border-radius:2px;background:linear-gradient(90deg,transparent,var(--aq))}
.cap .key{flex:none;margin-left:6px}
.burger{display:none;flex:none;align-items:center;justify-content:center;width:46px;height:46px;border:0;border-radius:12px;background:rgba(255,255,255,.06);color:var(--ink);cursor:pointer;box-shadow:inset 0 0 0 1px var(--line)}

/* slab */
.slab{position:relative;width:min(var(--w),100% - 24px);margin:12px auto 0;border-radius:26px;background:linear-gradient(180deg,rgba(150,235,240,.085),rgba(140,170,255,.04) 900px),rgba(7,12,19,.52);border:1px solid var(--line);box-shadow:inset 0 1px 0 rgba(255,255,255,.14),inset 1px 0 0 rgba(255,255,255,.05),0 50px 140px -30px rgba(0,0,0,.8);-webkit-backdrop-filter:blur(30px) saturate(150%);backdrop-filter:blur(30px) saturate(150%)}
.slab::before{content:"";position:absolute;left:-1px;top:26px;bottom:26px;width:1px;background:linear-gradient(180deg,rgba(95,242,238,.7),rgba(127,123,255,.35) 40%,transparent 80%);pointer-events:none}
main{display:block;min-width:0}
main>*{min-width:0}

/* the overshooting rule */
.rule{position:relative;height:1px;background:linear-gradient(90deg,rgba(95,242,238,0),rgba(95,242,238,.35) 30%,var(--aq));margin:0 calc(-1*var(--pad) - var(--os)) 48px calc(-1*var(--pad))}
.rule::after{content:"";position:absolute;right:-4px;top:-4px;width:9px;height:9px;border-radius:50%;background:var(--aq2);box-shadow:0 0 0 5px rgba(95,242,238,.14),0 0 22px 4px rgba(95,242,238,.75)}

/* top / hero */
.top{position:relative;padding:38px var(--pad) 44px}
.top h1{font-weight:800;font-size:clamp(32px,5.6vw,46px);line-height:1.04;letter-spacing:-.025em}
.lead{margin:18px 0 0;font-size:19px;line-height:1.55;color:var(--txt);max-width:60ch}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0 0 18px;font:500 12.5px/1.3 var(--fm);letter-spacing:.02em;color:var(--mut)}
.crumbs a{display:inline-flex;align-items:center;min-height:44px;color:var(--aq);text-decoration:none}
.crumbs a:hover{text-decoration:underline}
.crumbs .sl{opacity:.5}
.eyebrow{display:inline-flex;align-items:center;gap:10px;margin:0 0 22px;font:500 12.5px/1.3 var(--fm);letter-spacing:.08em;text-transform:uppercase;color:var(--aq)}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--aq)}
.hero{padding:64px var(--pad) 60px}
.hero h1{font-size:clamp(40px,8.4vw,68px);line-height:.98;text-shadow:0 0 60px rgba(95,242,238,.25)}
.hero .lead{font-size:20px}
.ring{position:absolute;right:calc(-1*var(--os) - 40px);top:-34px;width:300px;height:300px;max-width:none;stroke:rgba(95,242,238,.55);fill:var(--aq2);pointer-events:none;filter:drop-shadow(0 0 10px rgba(95,242,238,.5))}
.hero>*:not(.ring){position:relative}
.bullets{list-style:none;margin:26px 0 0;padding:0;display:grid;gap:10px}
.bullets li,.takes li{position:relative;padding-left:30px;color:var(--ink)}
.bullets li::before,.takes li::before{content:"";position:absolute;left:2px;top:.42em;width:13px;height:13px;border-radius:50%;border:2px solid var(--aq);border-right-color:transparent;transform:rotate(-45deg);box-shadow:0 0 12px rgba(95,242,238,.35)}
.acts{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}

/* sections */
.sec{position:relative;padding:0 var(--pad) 60px}
.sec-h{display:flex;align-items:flex-end;gap:18px;margin:0 0 30px}
.sec-h h2{font-weight:700;font-size:clamp(26px,4.4vw,34px);line-height:1.08;padding-bottom:6px}
.num{flex:none;font:800 62px/.8 var(--fd);letter-spacing:-.04em;color:rgba(95,242,238,.45);background:linear-gradient(180deg,rgba(164,248,245,.95),rgba(95,242,238,.12) 92%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;user-select:none}
.num.solo{display:block;margin:0 0 22px}
h3{font-weight:700;font-size:19px;line-height:1.25;margin:0 0 6px}

/* facts */
.facts{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));margin:28px 0 0;border-top:1px solid var(--line)}
.facts>div{grid-column:span 2;display:flex;flex-direction:column-reverse;justify-content:flex-end;gap:6px;padding:18px 16px 18px 0;border-bottom:1px solid var(--line);min-width:0}
.facts>div:nth-child(-n+2):nth-last-child(n+4){grid-column:span 3}
.facts dt{font:400 12px/1.4 var(--fm);color:var(--mut);letter-spacing:.02em}
.facts dd{margin:0;font:700 28px/1 var(--fd);color:var(--ink);letter-spacing:-.02em}

/* code */
pre.code{position:relative;margin:22px 0;padding:0;overflow-x:auto;max-width:100%;border-radius:16px;background:var(--well);border:1px solid var(--line);box-shadow:inset 0 1px 0 rgba(255,255,255,.05);font:400 13.5px/1.7 var(--fm);color:#dbe9ec;tab-size:2;scrollbar-color:rgba(95,242,238,.4) transparent;scrollbar-width:thin}
pre.code code{display:block;width:max-content;min-width:100%;padding:14px 18px 18px;font:inherit;background:none;border:0;color:inherit;white-space:pre}
.copy{display:block;position:sticky;left:0;width:100%;min-height:44px;padding:0 18px;border:0;border-bottom:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--mut);font:500 11.5px/1 var(--fm);letter-spacing:.1em;text-transform:uppercase;text-align:right;cursor:pointer;transition:color .15s,background .15s}
.copy:hover{color:var(--aq);background:rgba(95,242,238,.07)}
.code .k{color:var(--aq)}.code .s{color:#c5bcff}.code .c{color:#8ea3ab;font-style:italic}
.codebox{border-radius:18px;background:var(--well);border:1px solid var(--line2);box-shadow:0 30px 70px -30px rgba(95,242,238,.35),inset 0 1px 0 rgba(255,255,255,.07);overflow:hidden;min-width:0}
.codetabs{display:flex;gap:2px;padding:6px 6px 0;overflow-x:auto}
.codetabs button{position:relative;min-height:44px;padding:0 16px;border:0;background:none;color:var(--mut);font:500 13px/1 var(--fm);cursor:pointer;border-radius:10px 10px 0 0;white-space:nowrap}
.codetabs button:hover{color:var(--ink)}
.codetabs button[aria-selected="true"]{color:var(--aq);background:rgba(95,242,238,.08)}
.codetabs button[aria-selected="true"]::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--aq);box-shadow:0 0 12px var(--aq)}
.codebox pre.code{margin:0;border:0;border-top:1px solid var(--line);border-radius:0;background:none;box-shadow:none}

/* home blocks */
.etch{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
.etch>div{padding:22px 0 24px;border-top:1px solid var(--line);min-width:0}
.etch>div:nth-child(odd){padding-right:26px;border-right:1px solid var(--line)}
.etch>div:nth-child(even){padding-left:26px}
.etch p,.steps p,.lenses p,.ben p,.exs p{margin:0;color:var(--mut);font-size:15.5px;line-height:1.6}
.etch h3::before{content:"";display:block;width:18px;height:2px;margin-bottom:12px;background:var(--aq);box-shadow:0 0 10px var(--aq)}
.steps{list-style:none;margin:0;padding:0}
.steps li{position:relative;display:grid;grid-template-columns:52px minmax(0,1fr);gap:18px;padding-bottom:28px}
.steps li:last-child{padding-bottom:0}
.steps li:not(:last-child)::before{content:"";position:absolute;left:25px;top:56px;bottom:4px;width:1px;background:linear-gradient(180deg,var(--line2),transparent)}
.sn{display:grid;place-items:center;width:52px;height:52px;border-radius:50%;border:1.5px solid var(--aq);border-top-color:transparent;font:500 16px/1 var(--fm);color:var(--aq);background:rgba(95,242,238,.06)}
.steps li>div{padding-top:10px}
.lenses{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.lenses>div{position:relative;padding:24px 22px;border-radius:20px;border:1px solid var(--line);background:radial-gradient(120% 90% at 0 0,rgba(95,242,238,.11),transparent 60%),rgba(255,255,255,.035);box-shadow:inset 0 1px 0 rgba(255,255,255,.1);min-width:0}
.lenses>div:nth-child(even){background:radial-gradient(120% 90% at 100% 0,rgba(127,123,255,.16),transparent 60%),rgba(255,255,255,.035)}

/* prose */
.prose{min-width:0;overflow-wrap:break-word}
.prose>*:first-child{margin-top:0}
.prose h2{font-weight:700;font-size:clamp(24px,4vw,30px);line-height:1.12;margin:52px 0 16px}
.prose h3{font-size:20px;margin:32px 0 10px}
.prose h4{font:600 17px/1.3 var(--ft);color:var(--ink);margin:24px 0 8px}
.prose p{margin:0 0 1.05em}
.prose strong{color:var(--ink);font-weight:600}
.prose a{color:var(--aq);text-underline-offset:3px}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:22px}
.prose li{margin:.35em 0;padding-left:4px}
.prose li::marker{color:var(--aq)}
.prose :not(pre)>code,.keyout code{font:400 .88em var(--fm);padding:2px 6px;border-radius:6px;background:rgba(95,242,238,.1);color:var(--aq2);overflow-wrap:anywhere}
.prose pre.code,.prose pre.code strong{font-weight:400;color:#dbe9ec}
.prose pre.code code{display:block;width:max-content;min-width:100%;padding:14px 18px 18px;font:inherit;background:none;border-radius:0;color:inherit;overflow-wrap:normal;white-space:pre}
.prose table{display:block;overflow-x:auto;max-width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;border:1px solid var(--line);border-radius:14px;background:var(--well)}
.prose th,.prose td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.prose th{font:500 12px/1.4 var(--fm);letter-spacing:.06em;text-transform:uppercase;color:var(--aq);white-space:nowrap}
.prose tr:last-child td{border-bottom:0}
.prose blockquote{margin:22px 0;padding:4px 0 4px 20px;border-left:2px solid var(--aq);color:var(--ink)}

/* faq */
.faq details{border-top:1px solid var(--line)}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:60px;padding:14px 0;cursor:pointer;list-style:none;font:600 17.5px/1.35 var(--ft);color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary i{flex:none;position:relative;width:30px;height:30px;border-radius:50%;border:1px solid var(--line2);transition:transform .2s,border-color .2s}
.faq summary i::before,.faq summary i::after{content:"";position:absolute;left:50%;top:50%;width:12px;height:1.5px;margin:-.75px 0 0 -6px;background:var(--aq)}
.faq summary i::after{transform:rotate(90deg)}
.faq details[open] summary i{transform:rotate(45deg);border-color:var(--aq)}
.faq summary:hover{color:var(--aq2)}
.faq details p{margin:0;padding:0 46px 22px 0;color:var(--mut)}

/* cta */
.cta{position:relative;padding:40px 34px;border-radius:22px;border:1px solid var(--line2);background:radial-gradient(90% 120% at 100% 0,rgba(95,242,238,.2),transparent 62%),radial-gradient(80% 120% at 0 100%,rgba(127,123,255,.2),transparent 60%),rgba(3,8,14,.45);box-shadow:inset 0 1px 0 rgba(255,255,255,.12)}
.cta h2{font-weight:800;font-size:clamp(28px,5vw,38px);line-height:1.05}
.cta p{margin:14px 0 26px;color:var(--txt);max-width:46ch}
.sec-cta{padding-bottom:56px}

/* key page */
.top-key{padding:26px var(--pad) 28px}
.top-key .crumbs{margin-bottom:6px}
.top-key h1{font-size:clamp(28px,4.6vw,38px)}
.top-key .lead{font-size:17.5px;margin-top:12px}
.gate{padding:0 var(--pad) 52px}
.gate .rule{margin-bottom:28px}
.form{position:relative;padding:26px;border-radius:22px;background:rgba(3,9,15,.62);border:1px solid rgba(95,242,238,.42);box-shadow:0 0 0 7px rgba(95,242,238,.055),0 40px 90px -30px rgba(95,242,238,.4),inset 0 1px 0 rgba(255,255,255,.1);min-width:0}
.tabs2{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:4px;margin:0 0 18px;border-radius:14px;background:rgba(255,255,255,.05);box-shadow:inset 0 0 0 1px var(--line)}
.tabs2 button{min-height:44px;padding:0 10px;border:0;border-radius:10px;background:none;color:var(--mut);font:600 15px/1.2 var(--ft);cursor:pointer}
.tabs2 button[aria-selected="true"]{background:rgba(95,242,238,.15);color:var(--aq2);box-shadow:inset 0 0 0 1px rgba(95,242,238,.45)}
.msg{display:none}
.msg.err{display:block;margin:0 0 16px;padding:12px 14px;border-radius:12px;background:rgba(255,107,129,.12);border:1px solid rgba(255,130,150,.55);color:#ffc9d1;font-size:15px}
.row{margin:0 0 14px}
.row label,.calc label{display:block;margin:0 0 7px;font:500 12px/1.3 var(--fm);letter-spacing:.06em;text-transform:uppercase;color:var(--mut)}
.form input,.calc input{display:block;width:100%;min-height:52px;padding:0 15px;border-radius:12px;border:1px solid var(--line2);background:rgba(255,255,255,.05);color:var(--ink);font:400 16.5px/1.2 var(--ft);transition:border-color .15s,box-shadow .15s}
.form input:hover,.calc input:hover{border-color:rgba(170,240,245,.45)}
.form input:focus,.calc input:focus{outline:0;border-color:var(--aq);box-shadow:0 0 0 4px rgba(95,242,238,.18)}
.note{margin:8px 0 0;font-size:13.5px;line-height:1.5;color:var(--mut)}
.form form>.btn{width:100%;min-height:56px;margin-top:6px;font-size:16.5px;border-radius:14px}
.form form>.note{text-align:center;margin-top:12px}
.keyout{display:none}
.keyout.on{display:block}
.keyout h3{font-size:22px;margin-bottom:14px}
.keybox{display:flex;align-items:center;gap:12px;padding:10px 10px 10px 16px;border-radius:14px;background:rgba(0,0,0,.45);border:1px dashed rgba(95,242,238,.6)}
.keybox span{flex:1;min-width:0;font:500 14.5px/1.5 var(--fm);color:var(--aq2);word-break:break-all}
.keyout>p{margin:16px 0 0;line-height:1.9}
.keyout>p.note{line-height:1.5;margin-top:10px}
.keyout strong{color:var(--ink);font-weight:600}
.mut{color:var(--mut)}
.form .acts{margin-top:20px;gap:8px}
.sec-ben{padding-bottom:56px}
.ben{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 30px}
.ben li{position:relative;padding-left:30px;min-width:0}
.ben li::before{content:"";position:absolute;left:0;top:5px;width:14px;height:14px;border-radius:50%;border:2px solid var(--aq);border-right-color:transparent;transform:rotate(-45deg)}
.ben h3{font-size:17.5px}

/* pricing */
.tariff{padding:0 var(--pad) 60px}
.prices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-radius:22px;border:1px solid var(--line2);background:radial-gradient(100% 140% at 0 0,rgba(95,242,238,.16),transparent 60%),var(--well);box-shadow:inset 0 1px 0 rgba(255,255,255,.1)}
.price{padding:28px 26px 26px;min-width:0}
.price+.price{border-left:1px solid var(--line)}
.price b{display:block;font:800 clamp(46px,10vw,76px)/.95 var(--fd);letter-spacing:-.04em;color:var(--aq2);text-shadow:0 0 44px rgba(95,242,238,.45)}
.price span{display:block;margin-top:12px;font:400 12.5px/1.4 var(--fm);color:var(--mut)}
.tariff .facts{margin-top:8px;border-top:0}
.sub{margin:22px 0 24px;color:var(--ink)}
.calc{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.calc>div{min-width:0}
.calc>div:last-child{grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 20px;padding:22px 24px;border-radius:18px;border:1px solid rgba(95,242,238,.42);background:radial-gradient(80% 160% at 100% 50%,rgba(95,242,238,.18),transparent 65%),var(--well)}
.calc>div:last-child label{margin:0}
.calc output{font:800 clamp(40px,9vw,60px)/1 var(--fd);letter-spacing:-.03em;color:var(--aq2);text-shadow:0 0 36px rgba(95,242,238,.5)}
.exs{list-style:none;margin:0;padding:0;counter-reset:x}
.exs li{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,8fr);gap:8px 28px;padding:22px 0;border-top:1px solid var(--line)}
.exs li:last-child{border-bottom:1px solid var(--line)}
.exs h3{margin:0}

/* article + docs rail */
.top-art{padding-bottom:20px}
.stamp{margin:0 var(--pad) 30px;font:400 12.5px/1.4 var(--fm);letter-spacing:.04em;color:var(--mut)}
.stamp time{color:var(--ink)}
.takes{margin:0 var(--pad) 52px;padding:26px 28px;border-radius:20px;border:1px solid var(--line2);background:radial-gradient(100% 120% at 0 0,rgba(95,242,238,.13),transparent 60%),var(--well);box-shadow:inset 0 1px 0 rgba(255,255,255,.08)}
.takes h2{font:500 12.5px/1.3 var(--fm);letter-spacing:.1em;text-transform:uppercase;color:var(--aq);margin:0 0 16px}
.takes ul{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.page-article .prose{font-size:18px;line-height:1.75}
.hasrail{position:relative}
.rail{margin:0 var(--pad) 48px}
.toc{padding:20px 22px 12px;border-radius:18px;border:1px solid var(--line);background:rgba(255,255,255,.035)}
.toc-h{margin:0 0 6px;font:500 12px/1.3 var(--fm);letter-spacing:.1em;text-transform:uppercase;color:var(--aq)}
.toc ol{list-style:none;margin:0;padding:0;counter-reset:t}
.toc li{counter-increment:t;border-top:1px solid var(--line)}
.toc li:first-child{border-top:0}
.toc a{display:flex;gap:12px;align-items:baseline;min-height:44px;padding:11px 0;color:var(--txt);text-decoration:none;font-size:15px;line-height:1.4}
.toc a::before{content:counter(t,decimal-leading-zero);flex:none;font:400 11.5px var(--fm);color:var(--mut)}
.toc a:hover{color:var(--aq)}
.side{display:none}

/* 404 */
.nf{padding:80px var(--pad) 72px}
.nf h1{font-size:clamp(38px,8vw,60px)}
.nf-links{display:flex;flex-wrap:wrap;gap:4px 20px;margin:34px 0 0}
.nf-links a,.foot-l a{display:inline-flex;align-items:center;min-height:44px;color:var(--txt);text-decoration:none;font-size:15px}
.nf-links a:hover,.foot-l a:hover{color:var(--aq)}

/* footer */
.foot{padding:0 var(--pad) 34px}
.foot .rule{margin-bottom:34px}
.foot-b{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:4px 20px}
.foot-b p{margin:0;font:400 12.5px/1.4 var(--fm);color:var(--mut)}
.foot-l{display:flex;flex-wrap:wrap;gap:0 22px;margin:14px 0 18px;padding:8px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.legal{margin:0;font-size:13.5px;color:var(--mut)}

/* wide: key button and TOC leave the slab */
@media (min-width:900px){
.cap .key{margin-right:-40px;min-height:50px;padding:0 22px}
}
@media (min-width:1360px){
.rail{position:absolute;left:calc(100% + 92px);top:0;bottom:0;width:224px;margin:0}
.rail-in{position:sticky;top:96px}
.toc,.side{background:linear-gradient(180deg,rgba(150,235,240,.08),rgba(140,170,255,.04)),rgba(7,12,19,.5);border-color:var(--line2);-webkit-backdrop-filter:blur(24px);backdrop-filter:blur(24px);box-shadow:inset 0 1px 0 rgba(255,255,255,.12)}
.toc{padding:18px 18px 8px}
.toc a{font-size:14px;min-height:0;padding:9px 0}
.side{display:block;margin-top:14px;padding:18px;border-radius:18px;border:1px solid var(--line2)}
.side-h{margin:0 0 6px;font:700 17px/1.25 var(--fd);color:var(--ink)}
.side p{font-size:14px;line-height:1.5;color:var(--mut);margin:0 0 14px}
.side .btn{width:100%}
}

/* narrow */
@media (max-width:899px){
:root{--os:0px}
.rule::after{right:-5px}
.ring{right:-110px;top:-60px;width:260px;height:260px;opacity:.7}
}
@media (max-width:719px){
:root{--pad:20px}
body{font-size:16.5px;padding-top:8px}
.cap{top:8px}
.cap-in{padding-left:12px;gap:6px}
.logo{flex:1;font-size:17px}
.burger{display:inline-flex}
.cap .key{min-height:46px;padding:0 13px;font-size:14px;margin-left:0}
.nav{display:none;position:absolute;left:0;right:0;top:calc(100% + 8px);flex-direction:column;align-items:stretch;margin:0;padding:8px;border-radius:18px;background:rgba(8,14,22,.97);border:1px solid var(--line2);box-shadow:0 30px 60px rgba(0,0,0,.7)}
.nav.open{display:flex}
.nav a{min-height:50px;padding:0 14px;font-size:16.5px}
.nav a[aria-current]::after{left:14px;right:auto;width:40px;bottom:8px}
.slab{border-radius:22px}
.hero{padding:44px var(--pad) 48px}
.top{padding-top:26px}
.hero.top{padding-top:44px}
.lead,.hero .lead{font-size:17.5px}
.acts .btn.big{flex:1 1 100%}
.rule{margin-bottom:38px}
.sec{padding-bottom:48px}
.sec-h{gap:14px;margin-bottom:24px}
.num{font-size:46px}
.facts>div,.facts>div:nth-child(-n+2):nth-last-child(n+4){grid-column:span 3}
.facts>div:nth-child(odd):last-child{grid-column:1/-1}
.facts dd{font-size:24px}
.etch,.lenses,.ben{grid-template-columns:minmax(0,1fr)}
.etch>div:nth-child(n){padding-left:0;padding-right:0;border-right:0}
.steps li{grid-template-columns:44px minmax(0,1fr);gap:14px}
.sn{width:44px;height:44px;font-size:15px}
.steps li:not(:last-child)::before{left:21px;top:48px}
.steps li>div{padding-top:7px}
.cta{padding:30px 22px}
.form{padding:18px 16px 20px;border-radius:20px}
.top-key{padding:14px var(--pad) 20px}
.top-key .lead{font-size:16px}
.gate .rule{margin-bottom:22px}
.keybox{flex-direction:column;align-items:stretch;padding:14px}
.price{padding:22px 18px}
.calc{grid-template-columns:minmax(0,1fr)}
.exs li{grid-template-columns:minmax(0,1fr)}
.takes{padding:22px 20px}
.page-article .prose{font-size:17px}
.faq details p{padding-right:0}
pre.code{font-size:12.5px}
.nf{padding:56px var(--pad)}
}
@media (max-width:380px){
.cap .key{padding:0 10px;font-size:13.5px}
.logo{font-size:16px;gap:7px}
.price b{font-size:42px}
}
@media (prefers-reduced-motion:reduce){
html{scroll-behavior:auto}
*,*::before,*::after{transition:none!important;animation:none!important}
}