:root{--accent:#2ecc71;--bg:#0f1117;--panel:#181b24;--text:#e8eaf0;--muted:#9aa1b2;--line:#262a36}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--text);font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
a{color:var(--accent)}
.wrap{max-width:1100px;margin:0 auto;padding:0 16px}
header.site{border-bottom:1px solid var(--line);background:var(--panel)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:56px}
.logo{font-weight:800;font-size:1.15rem;color:var(--text);text-decoration:none}
.logo span{color:var(--accent)}
nav a{color:var(--muted);text-decoration:none;margin-left:16px;font-size:.95rem}
nav a:hover{color:var(--text)}
h1{font-size:1.6rem;margin:20px 0 4px}
.sub{color:var(--muted);margin:0 0 16px}

/* ad slots: collapse when empty so there are no blank gaps */
.ad-slot{margin:12px auto;text-align:center;overflow:hidden}
.ad-slot:empty{display:none}
.ad-top{min-height:90px;max-width:728px}
.ad-bottom{max-width:728px}

/* game area */
.stage{position:relative;width:100%;aspect-ratio:16/9;max-height:78vh;background:#000;border-radius:12px;overflow:hidden;border:1px solid var(--line)}
.stage iframe{position:absolute;inset:0;width:100%;height:100%;border:0;background:#000}
.cover{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  background:radial-gradient(ellipse at center,color-mix(in srgb,var(--accent) 35%,#000),#05060a 70%);text-align:center;padding:16px}
.cover h2{margin:0;font-size:clamp(1.4rem,4vw,2.4rem)}
.play{appearance:none;border:0;background:var(--accent);color:#000;font-weight:800;font-size:1.2rem;padding:14px 38px;border-radius:999px;cursor:pointer;box-shadow:0 6px 24px rgba(0,0,0,.4)}
.play:hover{filter:brightness(1.1)}
.bar{display:flex;justify-content:space-between;align-items:center;margin:8px 0}
.bar button{background:var(--panel);color:var(--text);border:1px solid var(--line);border-radius:8px;padding:6px 14px;cursor:pointer}
.bar button:hover{border-color:var(--accent)}

section.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin:20px 0}
section.card h2{margin-top:0;font-size:1.2rem}
ul.controls{padding-left:20px;margin:0}
.more{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px}
.more a{display:block;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:14px;text-decoration:none;color:var(--text)}
.more a:hover{border-color:var(--accent)}
footer.site{border-top:1px solid var(--line);margin-top:40px;padding:20px 0;color:var(--muted);font-size:.9rem}
footer.site a{color:var(--muted);margin-right:14px}
.prose{max-width:760px;margin:28px auto}
.prose h1{margin-top:0}

@media (max-width:640px){
  h1{font-size:1.3rem}
  nav a{margin-left:10px}
  .stage{aspect-ratio:4/3}
}