:root{--blue:#082b68;--blue2:#031d48;--red:#c9003d;--cream:#fff4db;--paper:#fffdf8;--green:#11a74a;--text:#102033;--muted:#5c6b80;--line:#e8dfcc;--shadow:0 18px 40px rgba(3,29,72,.15);--radius:22px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--text);background:linear-gradient(180deg,#fffaf0 0,#fff 44%,#fffaf0 100%);font-size:17px;line-height:1.65}img{max-width:100%;height:auto}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}.skip{position:absolute;left:-999px;top:10px;background:#fff;padding:10px 14px;z-index:10}.skip:focus{left:10px}.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(8,43,104,.09)}.nav{max-width:1180px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:10px 22px}.brand{display:flex;align-items:center;gap:9px;font-weight:900;color:var(--blue2)}.brand img{width:35px;height:35px}.navlinks{display:flex;align-items:center;gap:18px;font-size:14px;font-weight:800}.navlinks a{color:var(--blue2)}.hero{background:radial-gradient(circle at 75% 18%,rgba(255,255,255,.22),transparent 24%),linear-gradient(135deg,#cf003d 0,#c50039 58%,#9f002f 100%);color:#fff;position:relative;overflow:hidden}.hero:after{content:"";position:absolute;left:-5%;right:-5%;bottom:-2px;height:95px;background:var(--cream);clip-path:polygon(0 55%,100% 15%,100% 100%,0 100%)}.hero-inner{max-width:1180px;margin:auto;display:grid;grid-template-columns:1fr .9fr;align-items:center;gap:46px;padding:52px 22px 130px;position:relative;z-index:1}.hero h1{font-size:clamp(42px,7vw,76px);line-height:.94;margin:14px 0 18px;letter-spacing:-2px;text-shadow:0 4px 0 rgba(8,43,104,.35)}.hero p{font-size:19px;max-width:640px}.eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 12px;font-weight:900;font-size:14px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;padding:13px 18px;font-weight:900;border:0;cursor:pointer;box-shadow:0 8px 18px rgba(0,0,0,.15)}.btn-primary{background:var(--green);color:#fff}.btn-light{background:#fff;color:var(--blue)}.btn-blue{background:var(--blue);color:#fff}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}.hero-card{background:rgba(255,255,255,.95);border:8px solid var(--blue);border-radius:28px;padding:8px;box-shadow:0 30px 50px rgba(0,0,0,.22);transform:rotate(2deg)}.hero-card img{display:block;border-radius:18px;aspect-ratio:4/3;object-fit:cover;object-position:center}.wrap{max-width:1180px;margin:auto;padding:0 22px}.game-wrap{margin-top:-82px;position:relative;z-index:5}.game-shell{background:#fff;border-radius:24px;box-shadow:var(--shadow);border:1px solid rgba(8,43,104,.15);overflow:hidden}.game-head{display:flex;align-items:center;justify-content:space-between;gap:12px;background:linear-gradient(135deg,var(--blue),var(--blue2));color:#fff;padding:15px 18px;font-weight:900}.game-actions{display:flex;flex-wrap:wrap;gap:10px}.small-btn{appearance:none;border:0;border-radius:999px;padding:9px 14px;background:#fff;color:var(--blue);font-weight:900;cursor:pointer;font-size:13px}.small-btn.green{background:var(--green);color:#fff}.frame-wrap{background:#071d43;padding:10px}.game-frame{display:block;width:100%;height:clamp(520px,72vh,760px);border:0;border-radius:14px;background:#fff}.below-game{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:12px 16px;background:#fffaf1;color:#31415a;font-size:14px}.section{padding:58px 0}.section.tight{padding:35px 0}.grid{display:grid;gap:24px}.two{grid-template-columns:1.1fr .8fr}.three{grid-template-columns:repeat(3,1fr)}.four{grid-template-columns:repeat(4,1fr)}h2{font-size:clamp(30px,4vw,44px);line-height:1.08;margin:0 0 18px;color:var(--blue2);letter-spacing:-.8px}h3{font-size:22px;line-height:1.2;margin:0 0 10px;color:var(--blue)}.lead{font-size:19px;color:#263953}.card,.toc,.callout,.video-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 10px 26px rgba(8,43,104,.08);padding:24px}.toc{position:sticky;top:80px;align-self:start;background:#fffaf0}.toc a{display:inline-flex;margin:5px 6px 6px 0;padding:8px 10px;border-radius:999px;background:#eef4ff;font-weight:900;font-size:13px}.pill-list{display:flex;gap:8px;flex-wrap:wrap;margin-top:13px}.pill{display:inline-flex;padding:7px 10px;border-radius:999px;background:#f1f6ff;color:var(--blue);font-weight:900;font-size:13px}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;counter-reset:step}.step{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 8px 18px rgba(8,43,104,.06);position:relative}.step:before{counter-increment:step;content:counter(step);display:inline-grid;place-items:center;width:32px;height:32px;border-radius:50%;background:var(--red);color:#fff;font-weight:900;margin-bottom:10px}.table{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden;border-radius:14px;border:1px solid var(--line)}.table th,.table td{padding:12px;border-bottom:1px solid var(--line);text-align:left}.table th{background:#fff2d0;color:var(--blue)}.table tr:last-child td{border-bottom:0}.badge{display:inline-flex;background:#fff2d0;color:#8a4b00;border-radius:999px;padding:4px 9px;font-size:12px;font-weight:900;margin-bottom:10px}.callout{background:linear-gradient(135deg,#fff8df,#fff);border-color:#f2d893}.callout.black{background:linear-gradient(135deg,#fff9df,#fff3bf)}.video-thumb{position:relative;display:block;overflow:hidden;border-radius:18px;background:#111;aspect-ratio:16/9}.video-thumb img{width:100%;height:100%;object-fit:cover;opacity:.84}.play-circle{position:absolute;inset:0;display:grid;place-items:center}.play-circle span{width:86px;height:86px;border-radius:50%;background:rgba(3,29,72,.9);color:#fff;display:grid;place-items:center;font-size:38px;box-shadow:0 10px 30px rgba(0,0,0,.25)}.similar{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.similar a{display:flex;gap:12px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;font-weight:900;color:var(--blue2);box-shadow:0 8px 18px rgba(8,43,104,.06)}.similar span{font-size:32px}.faq details{background:#fff;border:1px solid var(--line);border-radius:16px;margin:10px 0;padding:15px 18px;box-shadow:0 6px 16px rgba(8,43,104,.05)}.faq summary{font-weight:900;color:var(--blue);cursor:pointer}.source-list li{margin:8px 0}.footer{background:var(--blue2);color:#dbe8ff;margin-top:36px;padding:38px 0}.footer a{color:#fff}.footer-grid{display:grid;grid-template-columns:1.4fr .7fr .7fr;gap:24px}.footer .brand{color:#fff}.mini-links{display:grid;gap:8px}.trust-hero{padding:54px 0 34px;background:linear-gradient(135deg,#fff3d2,#fff)}.trust-hero h1{font-size:clamp(38px,6vw,62px);line-height:1;margin:0 0 12px;color:var(--blue2)}.prose{max-width:900px}.prose h2{font-size:32px;margin-top:34px}.prose p,.prose li{color:#263953}.notice{background:#fff8e5;border:1px solid #f1da9c;border-radius:16px;padding:14px 16px}.checklist li{margin:9px 0}.kbd{font-family:monospace;background:#eef4ff;border:1px solid #d8e5fb;border-radius:6px;padding:2px 6px}@media (max-width:900px){.hero-inner,.two,.three,.four,.footer-grid{grid-template-columns:1fr}.steps{grid-template-columns:1fr 1fr}.nav{align-items:flex-start}.navlinks{flex-wrap:wrap;justify-content:flex-end}.hero-inner{padding-top:36px}.hero-card{transform:none}.game-wrap{margin-top:-60px}.game-frame{height:620px}.toc{position:static}}@media (max-width:560px){body{font-size:16px}.nav{padding:9px 14px}.brand span{font-size:14px}.navlinks{display:none}.hero h1{font-size:42px}.hero p{font-size:17px}.hero-inner{padding:34px 16px 105px}.wrap{padding:0 14px}.steps,.similar{grid-template-columns:1fr}.game-head{align-items:flex-start;flex-direction:column}.frame-wrap{padding:6px}.game-frame{height:560px;border-radius:12px}.section{padding:42px 0}.card,.toc,.callout,.video-box{padding:18px}.footer-grid{gap:10px}}

/* Fullscreen game mode: keep visitors inside the site and give the iframe the full screen. */
.game-shell:fullscreen{width:100vw;height:100vh;border-radius:0;border:0;display:flex;flex-direction:column;background:#fff;overflow:hidden}
.game-shell:fullscreen .game-head{display:none}
.game-shell:fullscreen .frame-wrap{flex:1;min-height:0;padding:0;background:#fff;display:flex}
.game-shell:fullscreen .game-frame{width:100%;height:100%;min-height:0;border-radius:0;background:#fff}
.game-shell:fullscreen .below-game{flex:0 0 auto;padding:10px 16px;background:#fffaf1;border-top:1px solid #eadfca}
.game-shell:fullscreen .below-game .small-btn.green{font-size:15px;padding:11px 18px}
@supports selector(:-webkit-full-screen){
  .game-shell:-webkit-full-screen{width:100vw;height:100vh;border-radius:0;border:0;display:flex;flex-direction:column;background:#fff;overflow:hidden}
  .game-shell:-webkit-full-screen .game-head{display:none}
  .game-shell:-webkit-full-screen .frame-wrap{flex:1;min-height:0;padding:0;background:#fff;display:flex}
  .game-shell:-webkit-full-screen .game-frame{width:100%;height:100%;min-height:0;border-radius:0;background:#fff}
  .game-shell:-webkit-full-screen .below-game{flex:0 0 auto;padding:10px 16px;background:#fffaf1;border-top:1px solid #eadfca}
}
@media (orientation:landscape) and (max-height:520px){.game-frame{height:calc(100vh - 120px)}}