:root{
  --teal:#0d4a46; --teal-2:#10615b; --amber:#f4bc3f; --amber-d:#e0a522;
  --rust:#c0392b; --ink:#23292b; --dim:#5f6b6a; --line:#e4ddd0;
  --cream:#f7f2e8; --card:#ffffff; --shell:1140px;
}
*{box-sizing:border-box}
html,body{width:100%;overflow-x:hidden;margin:0;padding:0}
body{
  font-family:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  color:var(--ink);background:var(--cream);line-height:1.64;font-size:17px;
}
.shell{max-width:var(--shell);margin:0 auto;padding:0 22px}
a{color:var(--teal-2)}
img{max-width:100%;height:auto;display:block}
h1,h2,h3{font-family:"Fraunces","Inter",Georgia,serif;color:var(--teal);line-height:1.2;font-weight:600}
h1{font-size:2.05rem;margin:.15em 0 .55em}
h2{font-size:1.5rem;margin:1.7em 0 .5em}
h3{font-size:1.18rem;margin:1.35em 0 .4em}
p{margin:0 0 1.05em}
ul,ol{margin:0 0 1.2em;padding-left:1.25em}
li{margin:.32em 0}

/* topbar */
.topbar{background:var(--teal);position:sticky;top:0;z-index:50;box-shadow:0 2px 0 rgba(0,0,0,.06)}
.topbar-row{display:flex;align-items:center;flex-wrap:nowrap;min-height:62px;gap:14px}
.brand-logo{color:var(--amber);font-family:"Fraunces",Georgia,serif;font-weight:600;font-size:1.28rem;text-decoration:none;white-space:nowrap}
.nav-main{display:flex;align-items:center;flex-wrap:nowrap;gap:1px;margin-left:auto}
.nav-main a{color:#e6efed;text-decoration:none;padding:7px 8px;font-size:.86rem;border-radius:6px;white-space:nowrap}
.nav-main a:hover{background:rgba(255,255,255,.1);color:#fff}
.nav-main a.is-here{color:var(--amber)}
.nav-go{background:var(--amber);color:var(--teal)!important;font-weight:600;margin-left:8px;padding:7px 13px!important;border-radius:999px!important}
.nav-go:hover{background:var(--amber-d)}
.nav-toggle{display:none;margin-left:auto;background:transparent;border:0;cursor:pointer;width:44px;height:44px;flex-direction:column;justify-content:center;gap:5px;padding:0}
.nav-toggle span{display:block;height:3px;width:25px;background:#fff;border-radius:2px;margin:0 auto}

/* crumbs */
.crumbs{background:#efe8da;border-bottom:1px solid var(--line);font-size:.85rem}
.crumbs .shell{padding-top:9px;padding-bottom:9px}
.crumbs a{color:var(--teal-2);text-decoration:none}
.crumbs-sep{color:var(--dim);margin:0 4px}
.crumbs span[aria-current]{color:var(--dim)}

/* main */
main{padding:28px 0 44px;display:block}
.hero{margin:0 0 1.25em;border-radius:16px;overflow:hidden;box-shadow:0 12px 30px rgba(13,74,70,.16)}
.hero img{width:100%;height:auto}
.lead{font-size:1.12rem;background:var(--card);border-left:5px solid var(--amber);
  padding:15px 19px;border-radius:10px;box-shadow:0 3px 12px rgba(13,74,70,.07);color:#2c3331}

/* fact box */
.factbox{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin:1.4em 0;box-shadow:0 4px 14px rgba(13,74,70,.06)}
.factbox-h{margin:.1em 0 .6em;font-size:1.08rem}
.fact-row{display:flex;justify-content:space-between;gap:12px;padding:7px 0;border-bottom:1px dashed var(--line);font-size:.95rem}
.fact-row:last-child{border-bottom:0}
.fact-k{color:var(--dim)}
.fact-v{font-weight:600;color:var(--teal);text-align:right}

/* note panel */
.panel-note{background:#fbf5e6;border:1px solid #ecd9a3;border-left:5px solid var(--amber);border-radius:10px;padding:13px 16px;margin:1.3em 0;font-size:.97rem;color:#5a4d28}

/* tables */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:1.25em 0;border:1px solid var(--line);border-radius:12px}
table{border-collapse:collapse;width:100%;min-width:460px;background:var(--card)}
th,td{padding:10px 13px;text-align:left;border-bottom:1px solid var(--line);font-size:.93rem}
th{background:var(--teal);color:#fff;font-weight:600}
tbody tr:nth-child(even){background:#f6f1e6}

/* tabs */
.tabset{margin:1.6em 0}
.tab-tabs{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:11px}
.tab-tabs button{border:1px solid var(--line);background:var(--card);padding:8px 15px;border-radius:999px;cursor:pointer;font:inherit;font-size:.9rem;color:var(--ink)}
.tab-tabs button.active{background:var(--teal);color:#fff;border-color:var(--teal)}
.tab-pane{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 18px}
.tab-pane[hidden]{display:none}

/* calculator */
.calc{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;margin:1.6em 0;box-shadow:0 4px 14px rgba(13,74,70,.06)}
.calc-grid{display:flex;gap:16px;flex-wrap:wrap}
.calc-grid>div{flex:1;min-width:135px}
.calc label{display:block;font-size:.86rem;color:var(--dim);margin-bottom:5px}
.calc input{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:9px;font:inherit;background:#fcf9f2}
.calc .calc-out{margin-top:13px;font-weight:600;color:var(--teal);font-size:1.15rem}

/* FAQ */
.faq-wrap{margin:2.1em 0}
.qa{background:var(--card);border:1px solid var(--line);border-radius:12px;margin:.6em 0;overflow:hidden}
.qa summary{cursor:pointer;padding:13px 17px;font-weight:600;color:var(--teal);list-style:none}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"+";float:right;color:var(--amber-d);font-weight:700;font-size:1.1rem}
.qa[open] summary::after{content:"–"}
.qa-body{padding:0 17px 15px}

/* CTA */
.cta-final{background:linear-gradient(135deg,var(--teal),var(--teal-2));color:#eaf3f1;border-radius:18px;padding:28px 24px;margin:2.2em 0 1em;text-align:center}
.cta-final h2{color:#fff}
.cta-final p{color:#cfe1dd;max-width:660px;margin:0 auto 1.2em}
.btn-cta{display:inline-block;background:var(--amber);color:var(--teal);font-weight:700;text-decoration:none;padding:13px 32px;border-radius:999px;font-size:1.05rem}
.btn-cta:hover{background:var(--amber-d)}

/* card grid (home) */
.game-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin:1.4em 0}
.game-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 17px;box-shadow:0 4px 14px rgba(13,74,70,.06)}
.game-card h3{margin:.1em 0 .4em;font-size:1.06rem}
.game-card a{font-weight:600;text-decoration:none}
.home-figs{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:1.4em 0}
.home-figs figure{margin:0;border-radius:14px;overflow:hidden;box-shadow:0 6px 18px rgba(13,74,70,.1)}

/* footer */
.footer{background:var(--teal);color:#bcd2cd;margin-top:32px;padding:32px 0 18px}
.footer-cols{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:26px}
.footer-block a{display:block;color:#bcd2cd;text-decoration:none;padding:3px 0;font-size:.92rem}
.footer-block a:hover{color:#fff}
.footer-brand{color:var(--amber);font-family:"Fraunces",Georgia,serif;font-size:1.2rem;margin:0 0 .5em;font-weight:600}
.footer-h{color:#fff;font-size:1rem;margin:0 0 .5em;font-weight:600}
.dim{color:#8fb0aa;font-size:.88rem}
.footer-legal{border-top:1px solid rgba(255,255,255,.13);margin-top:18px;padding-top:14px;text-align:center}

/* back to top */
.to-top{position:fixed;right:16px;bottom:16px;width:46px;height:46px;border-radius:50%;border:0;background:var(--teal);color:#fff;font-size:1.25rem;cursor:pointer;opacity:0;pointer-events:none;transition:opacity .2s;z-index:40}
.to-top.show{opacity:.92;pointer-events:auto}

@media (max-width:1080px){
  .nav-toggle{display:flex}
  .nav-main{display:none;position:absolute;left:0;right:0;top:62px;background:var(--teal);
    flex-direction:column;align-items:stretch;padding:8px 18px 16px;gap:2px;border-top:1px solid rgba(255,255,255,.12)}
  .nav-main.open{display:flex}
  .nav-main a{padding:11px 8px;font-size:1rem}
  .nav-go{margin:9px 0 0;text-align:center}
  .topbar-row{position:relative}
  .footer-cols{grid-template-columns:1fr;gap:18px}
  .home-figs{grid-template-columns:1fr}
}
@media (max-width:720px){
  body{font-size:16px}
  h1{font-size:1.62rem}
  h2{font-size:1.32rem}
  .shell{padding:0 22px}
  .cta-final{padding:22px 18px}
}