:root{
  --bg:#f6f8fc; --panel:#fff; --ink:#17223b; --muted:#64748b;
  --brand:#5b6ff7; --brand2:#7c3aed; --line:#e5eaf3; --soft:#eef2ff;
  --good:#0f9f6e; --max:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.65}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{width:min(var(--max),calc(100% - 32px));margin:auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.logo{font-size:21px;font-weight:950;letter-spacing:-.04em;color:var(--ink);white-space:nowrap}
.logo span{color:var(--brand)}
.nav-links{display:flex;align-items:center;gap:18px;font-weight:800;font-size:14px}
.nav-links a{color:#34425f}
.nav-cta{background:var(--brand);color:#fff!important;padding:9px 14px;border-radius:12px;text-decoration:none!important}
.hero{padding:72px 0 46px;background:radial-gradient(circle at 20% 5%,#fff 0,#f0f3ff 30%,transparent 58%)}
.eyebrow{color:var(--brand2);font-weight:900;text-transform:uppercase;letter-spacing:.08em;font-size:12px}
h1{font-size:clamp(38px,6vw,72px);line-height:1.02;letter-spacing:-.06em;margin:10px 0 18px}
h2{font-size:clamp(27px,3vw,40px);line-height:1.15;letter-spacing:-.04em;margin:0 0 16px}
h3{line-height:1.25}
.lead{font-size:19px;color:#52617d;max-width:760px}
.button{display:inline-block;border:0;border-radius:14px;padding:12px 18px;font-weight:900;background:var(--brand);color:#fff!important;text-decoration:none!important;box-shadow:0 8px 24px rgba(91,111,247,.2)}
.button.ghost{background:#fff;color:var(--ink)!important;border:1px solid var(--line);box-shadow:none}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
.section{padding:58px 0}
.section.white{background:#fff}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:0 10px 32px rgba(30,41,59,.06)}
.card.soft{background:#f7f8ff}
.card h3{margin-top:0}
.kicker{font-weight:900;color:var(--brand)}
.mode-row{display:grid;grid-template-columns:repeat(6,1fr);gap:10px}
.mode-chip{background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px;text-align:center;font-size:12px}
.mode-chip strong{display:block;font-size:14px;margin:5px 0}
.content{width:min(820px,calc(100% - 32px));margin:auto;padding:52px 0}
.content h1{font-size:46px}
.content h2{margin-top:38px}
.content p,.content li{color:#4b5a73}
.note{border-left:4px solid var(--brand);background:var(--soft);padding:14px 16px;border-radius:0 14px 14px 0}
.game-shell{background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:0 18px 50px rgba(30,41,59,.12)}
.game-frame{display:block;width:100%;height:min(820px,78vh);min-height:650px;border:0;background:#eef3fb}
.game-intro{padding:34px 0 22px}
.game-intro h1{font-size:44px}
.desktop-note{font-size:13px;color:var(--muted)}
.ad-safe-gap{height:180px}
.ad-slot{min-height:110px;border:1px dashed #cbd5e1;background:#fff;border-radius:16px;display:flex;align-items:center;justify-content:center;color:#94a3b8;font-size:12px;text-transform:uppercase;letter-spacing:.09em}
.ad-caption{text-align:center;font-size:11px;color:#94a3b8;margin-bottom:6px}
.policy-table{width:100%;border-collapse:collapse}
.policy-table th,.policy-table td{border-bottom:1px solid var(--line);padding:12px;text-align:left;vertical-align:top}
.site-footer{background:#17223b;color:#c7d0e0;padding:38px 0;margin-top:30px}
.site-footer a{color:#e8ecff}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}
.small{font-size:13px;color:#7a879d}
.notice{font-size:13px;color:#64748b;background:#fff;border:1px solid var(--line);padding:14px;border-radius:14px}
@media(max-width:850px){
  .nav-links a:not(.nav-cta){display:none}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .mode-row{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .game-frame{min-height:650px;height:75vh}
}

.simple-hero{
  padding:26px 0 14px;
  background:radial-gradient(circle at 20% 0%,#fff 0,#f3f5ff 34%,transparent 60%);
}
.simple-hero h1{
  font-size:clamp(30px,4vw,46px);
  margin:4px 0 8px;
}
.simple-hero .lead{
  font-size:15px;
  margin:0;
  max-width:760px;
}
.simple-game-shell{
  margin-top:12px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:20px;
  overflow:hidden;
  box-shadow:0 16px 44px rgba(30,41,59,.11);
}
.simple-game-frame{
  display:block;
  width:100%;
  height:min(820px,78vh);
  min-height:650px;
  border:0;
  background:#eef3fb;
}
.quick-links{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:14px;
  font-size:13px;
  font-weight:800;
}
.quick-links a{
  color:#4b5a73;
  background:#fff;
  border:1px solid var(--line);
  padding:7px 10px;
  border-radius:999px;
}
@media(max-width:850px){
  .simple-game-frame{height:75vh;min-height:620px}
  .simple-hero{padding-top:18px}
}


/* Full-screen game controls */
.game-toolbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-top:12px;
  margin-bottom:8px;
}
.game-toolbar-text{
  display:flex;
  flex-direction:column;
  line-height:1.25;
}
.game-toolbar-text strong{
  font-size:15px;
  color:var(--ink);
}
.game-toolbar-text span{
  font-size:12px;
  color:var(--muted);
}
.fullscreen-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 15px;
  border:1px solid #dce3f0;
  border-radius:13px;
  background:#fff;
  color:#263552;
  font-weight:900;
  cursor:pointer;
  box-shadow:0 6px 18px rgba(30,41,59,.09);
}
.fullscreen-btn:hover{
  background:#f7f8ff;
  border-color:#aab6ff;
}
.fs-icon{
  font-size:18px;
  line-height:1;
}
.fullscreen-tip{
  margin:7px 4px 0;
  color:#8490a4;
  font-size:11px;
  text-align:right;
}
.simple-game-shell{
  position:relative;
}
.exit-fullscreen-btn{
  display:none;
  position:absolute;
  top:14px;
  right:14px;
  z-index:10005;
  border:0;
  border-radius:12px;
  background:rgba(23,34,59,.88);
  color:#fff;
  padding:9px 12px;
  font-weight:850;
  cursor:pointer;
  box-shadow:0 7px 20px rgba(0,0,0,.22);
  backdrop-filter:blur(8px);
}

/* Native browser fullscreen */
.simple-game-shell:fullscreen,
.simple-game-shell:-webkit-full-screen{
  width:100vw;
  height:100vh;
  border-radius:0;
  border:0;
  background:#eef3fb;
}
.simple-game-shell:fullscreen .simple-game-frame,
.simple-game-shell:-webkit-full-screen .simple-game-frame{
  width:100vw;
  height:100vh;
  min-height:100vh;
}
.simple-game-shell:fullscreen .exit-fullscreen-btn,
.simple-game-shell:-webkit-full-screen .exit-fullscreen-btn{
  display:block;
}

/* CSS fallback if Fullscreen API is unavailable */
.simple-game-shell.theater-fullscreen{
  position:fixed;
  inset:0;
  z-index:9999;
  width:100vw;
  height:100vh;
  max-width:none;
  margin:0;
  border:0;
  border-radius:0;
  background:#eef3fb;
}
.simple-game-shell.theater-fullscreen .simple-game-frame{
  width:100vw;
  height:100vh;
  min-height:100vh;
}
.simple-game-shell.theater-fullscreen .exit-fullscreen-btn{
  display:block;
}
body.game-fullscreen-fallback{
  overflow:hidden;
}

@media(max-width:700px){
  .game-toolbar-text span{display:none}
  .fullscreen-tip{text-align:left}
}