@font-face{font-family:"Nunito";src:url(/assets/fonts/nunito-800.woff2) format("woff2");font-weight:800;font-display:swap}
@font-face{font-family:"Inter";src:url(/assets/fonts/inter-var.woff2) format("woff2");font-weight:100 900;font-display:swap}
:root{--ink:#0e0d0c;--coal:#1e1d1c;--slate:#2b2826;--line:#403c38;--text:#f7f7f7;--soft:#bdb9b3;--sun:#f7cd01}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--coal);color:var(--text);font:400 16px/1.6 Inter,system-ui,sans-serif}
img{max-width:100%;height:auto;display:block}
a{color:var(--sun)}
a:hover{text-decoration:none}
h1,h2,h3{font-family:Nunito,Inter,sans-serif;font-weight:800;line-height:1.18;margin:0;color:var(--text)}
h1{font-size:clamp(28px,3vw,38px)}
h2{font-size:clamp(23px,2.2vw,29px);margin-bottom:12px;scroll-margin-top:72px}
h3{font-size:19px;margin-bottom:6px}
p{margin:0 0 12px}
ul,ol{margin:0 0 12px;padding-left:22px}
li{margin-bottom:5px}

/* left rail */
.rail{position:fixed;inset:0 auto 0 0;width:240px;background:var(--ink);border-right:1px solid var(--slate);display:flex;flex-direction:column;padding:22px 14px;overflow-y:auto;z-index:30}
.rail__brand{display:block;padding:0 8px 22px}
.rail__list{list-style:none;margin:0;padding:0;flex:1}
.rail__list li{margin:0 0 2px}
.rail__list a{display:flex;align-items:center;gap:12px;padding:10px;border-radius:8px;color:var(--soft);text-decoration:none;font-weight:600;font-size:15px}
.rail__list a:hover{background:var(--coal);color:var(--text)}
.rail__list a.is-on{background:var(--slate);color:var(--sun)}
.rail__foot{padding:14px 4px 0;border-top:1px solid var(--slate)}
.rail__foot .age{text-align:center;margin:8px 0 0}
.rail__foot .cta{padding:14px 8px}
.topbar,.stickybar{display:none}

/* layout */
.shell{margin-left:240px;min-height:100vh;display:flex;flex-direction:column}
.page{width:100%;max-width:1200px;margin:0 auto;padding:30px 32px 40px;flex:1}
.block{margin-top:40px}
.split{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:32px;align-items:start;margin-top:28px}
.doc{min-width:0}
.doc>.block:first-of-type{margin-top:24px}

/* buttons */
.cta{display:inline-block;background:var(--sun);color:var(--ink);font:800 17px/1.1 Nunito,Inter,sans-serif;text-decoration:none;text-align:center;padding:14px 26px;border-radius:10px}
.cta:hover{background:#ffdc2e}
.cta--wide{display:block;width:100%}
.age{font-size:13px;color:var(--soft);margin:0}
.stamp{font-size:14px;color:var(--soft);margin:6px 0 10px}
.lead{font-size:17px}

/* home hero */
.duo{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);gap:24px;align-items:stretch}
.duo__art{margin:0 0 16px;background:var(--slate);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.duo__art img{width:100%}
.packs{background:var(--slate);border:1px solid var(--line);border-radius:14px;padding:20px;display:flex;flex-direction:column}
.packs__head{font:800 19px/1.2 Nunito,Inter,sans-serif;margin:0 0 12px}
.packs input{position:absolute;opacity:0;width:1px;height:1px}
.packs__tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;background:var(--coal);border-radius:10px;padding:4px;margin-bottom:16px}
.packs__tabs label{text-align:center;padding:9px 4px;border-radius:7px;cursor:pointer;font-weight:600;font-size:14px;color:var(--soft)}
#pk1:checked~.packs__tabs label[for=pk1],#pk2:checked~.packs__tabs label[for=pk2],#pk3:checked~.packs__tabs label[for=pk3]{background:var(--sun);color:var(--ink)}
.packs input:focus-visible~.packs__tabs{outline:2px solid var(--sun);outline-offset:2px}
.pack{display:none;flex:1}
#pk1:checked~.pack--1,#pk2:checked~.pack--2,#pk3:checked~.pack--3{display:block}
.pack__sum{font:800 clamp(25px,2.4vw,31px)/1.15 Nunito,Inter,sans-serif;margin:0 0 3px}
.pack__name{color:var(--soft);font-size:14px;margin:0 0 12px}
.pack ul{list-style:none;padding:0;margin:0 0 12px;font-size:15px}
.pack li{display:flex;justify-content:space-between;gap:14px;padding:6px 0;border-bottom:1px solid var(--line);margin:0}
.pack li span:last-child{text-align:right;font-weight:600}
.pack__warn{font-size:13.5px;color:var(--soft);margin:0}
.packs .cta{margin-top:14px}
.packs .age{text-align:center;margin-top:8px}

/* money head */
.opening{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:26px;align-items:center;background:var(--slate);border:1px solid var(--line);border-radius:14px;padding:20px}
.opening__art{margin:0;border-radius:10px;overflow:hidden}
.opening__art img{width:100%}
.opening__act{display:flex;align-items:center;gap:12px;flex-wrap:wrap}

/* sticky figures */
.figures{position:sticky;top:20px;background:var(--slate);border:1px solid var(--line);border-radius:14px;padding:18px}
.figures__head{font:800 18px/1.2 Nunito,Inter,sans-serif;margin:0 0 10px}
.figures dl{margin:0 0 12px}
.figures dl div{display:flex;justify-content:space-between;gap:12px;padding:7px 0;border-bottom:1px solid var(--line);font-size:14px}
.figures dt{color:var(--soft)}
.figures dd{margin:0;font-weight:600;text-align:right}
.figures .age{margin-bottom:10px}

/* toc */
.toc{background:var(--slate);border:1px solid var(--line);border-radius:10px;padding:0 16px}
.toc summary{padding:12px 0;cursor:pointer;font-weight:600}
.toc ol{margin:0;padding:0 0 12px 20px;font-size:15px}
.toc a{color:var(--text)}

/* tables */
.grid-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px;margin:0 0 14px}
table{border-collapse:collapse;width:100%;font-size:15px}
th,td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
thead th{background:var(--slate);font-weight:600;color:var(--soft);font-size:13.5px;white-space:nowrap}
tbody tr:last-child td,tbody tr:last-child th{border-bottom:0}
tbody th{font-weight:600}
.wide{min-width:680px}

/* calculator */
.calc{background:var(--slate);border:1px solid var(--line);border-radius:14px;padding:20px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:22px;margin-bottom:10px}
.calc label{display:block;font-weight:600;font-size:14px;margin-bottom:5px}
.calc input,.calc select{width:100%;background:var(--coal);border:1px solid var(--line);border-radius:8px;color:var(--text);font:600 18px Inter,sans-serif;padding:10px 12px;margin-bottom:14px}
.calc input:focus,.calc select:focus{outline:2px solid var(--sun);outline-offset:1px}
.calc__out{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:0}
.calc__out div{background:var(--coal);border-radius:10px;padding:12px}
.calc__out dt{font-size:13px;color:var(--soft)}
.calc__out dd{margin:2px 0 0;font:800 24px/1.2 Nunito,Inter,sans-serif;color:var(--sun)}
.calc__low{margin:0;font-size:14px}
.fine{font-size:14px;color:var(--soft)}

/* problem and solution cards */
.pairs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-bottom:14px}
.pair{background:var(--slate);border:1px solid var(--line);border-radius:12px;padding:16px}
.pair{margin:0}
.pair dt{font-size:12.5px;letter-spacing:.04em;color:var(--soft);font-weight:600}
.pair dd{margin:0 0 8px;font-size:15px}
.pair dd:last-child{margin:0}
.pair dt:nth-of-type(2){color:var(--sun)}

/* steps and cards */
.steps{counter-reset:s;list-style:none;padding:0;margin:0 0 14px}
.steps li{counter-increment:s;position:relative;padding:0 0 12px 44px;margin:0}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:8px;background:var(--slate);border:1px solid var(--line);color:var(--sun);font:800 15px/28px Nunito,sans-serif;text-align:center}
.tiles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:14px}
.tile{background:var(--slate);border:1px solid var(--line);border-radius:12px;padding:16px}
.tile p{font-size:15px;margin:0}
ul.tiles{list-style:none;padding:0}
li.tile{margin:0;font-size:15px}
.tile img{width:84px;margin-bottom:8px}
.tile a{font-weight:600}
.note{background:var(--slate);border-left:3px solid var(--sun);border-radius:0 10px 10px 0;padding:12px 16px;margin:0 0 14px}

/* game shelf */
.shelf{display:flex;gap:12px;overflow-x:auto;padding-bottom:10px;scroll-snap-type:x proximity}
.shelf a{flex:0 0 150px;scroll-snap-align:start;text-decoration:none;color:var(--text);font-weight:600;font-size:14px}
.shelf img{width:150px;height:200px;object-fit:cover;border-radius:10px;margin-bottom:6px}

/* faq */
.qa details{border-bottom:1px solid var(--line)}
.qa summary{cursor:pointer;padding:13px 0;font-weight:600}
.qa__a p{margin:0 0 14px;color:#e6e3df}

.read{background:var(--slate);border:1px solid var(--line);border-radius:12px;padding:14px 18px}
.read h3{font-size:16px}
.read p{margin:0;font-size:14px;color:var(--soft)}

/* responsible play block */
.limits{background:var(--slate);border:1px solid var(--line);border-radius:14px;padding:18px 20px}
.limits p:last-child{margin:0}

/* footer */
.base{border-top:1px solid var(--slate);background:var(--ink);padding:26px max(32px,calc((100% - 1136px)/2)) 30px;font-size:14px;color:var(--soft)}
.base__row{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:16px}
.base__links{display:flex;flex-wrap:wrap;gap:6px 20px;list-style:none;margin:0;padding:0}
.base__links li{margin:0}
.base__links a{color:var(--text)}
.base__pay{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;padding:0;margin:0 0 16px}
.base__pay li{margin:0;background:var(--coal);border-radius:6px;padding:4px 10px;font-size:13px;min-height:40px;display:flex;align-items:center}
.base__pay img{height:32px;width:auto}
.base__note{margin:0 0 8px}
.base__note strong{color:var(--text);font-weight:600}

@media (max-width:1180px){
  .split{grid-template-columns:minmax(0,1fr) 250px;gap:22px}
  .opening{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:960px){
  .rail{transform:translateX(-100%);visibility:hidden;transition:transform .2s;top:56px;width:100%;max-width:320px;z-index:40}
  .nav-open .rail{transform:none;visibility:visible}
  .nav-open{overflow:hidden}
  .rail__brand{display:none}
  .shell{margin-left:0;min-height:0}
  .topbar{display:flex;position:sticky;top:0;z-index:50;height:56px;align-items:center;justify-content:space-between;padding:0 16px;background:var(--ink);border-bottom:1px solid var(--slate)}
  .topbar img{width:128px;height:auto}
  .burger{background:none;border:0;padding:10px;width:44px;height:44px;display:flex;flex-direction:column;justify-content:center;gap:5px;cursor:pointer}
  .burger span{display:block;height:2px;background:var(--text);border-radius:2px;transition:transform .2s,opacity .2s}
  .nav-open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-open .burger span:nth-child(2){opacity:0}
  .nav-open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .stickybar{display:flex;position:fixed;inset:auto 0 0 0;z-index:35;align-items:center;gap:12px;background:var(--ink);border-top:1px solid var(--line);padding:9px 16px}
  .stickybar .cta{flex:1;padding:12px}
  .base{padding:24px 16px 86px}
  .page{padding:18px 16px 32px}
  .block{margin-top:32px}
  .duo,.split,.calc{grid-template-columns:minmax(0,1fr)}
  .figures{position:static}
  .pairs,.tiles{grid-template-columns:minmax(0,1fr)}
  .calc__out{grid-template-columns:repeat(2,minmax(0,1fr))}
  .opening{padding:14px}
  .opening__act{justify-content:center}
  .opening__act .cta{width:100%}
  .opening__act .age{width:100%;text-align:center}
  .packs .cta{display:block}
}