*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC",system-ui,sans-serif;background:#fff;color:#1c1917;line-height:1.78;font-size:16px}
a{color:#4338ca;text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}

.site-header{background:#fff;border-bottom:1px solid #e0e7ff;position:sticky;top:0;z-index:220;box-shadow:0 1px 0 rgba(67,56,202,.06)}
.header-inner{max-width:1120px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;position:relative}
.brand{display:flex;align-items:center;gap:10px;color:#111;font-weight:600;font-size:.94rem}
.brand em{font-style:normal;color:#4338ca;font-weight:700}
.site-nav ul{display:flex;flex-wrap:wrap;gap:6px 20px;list-style:none}
.site-nav a{color:#57534e;font-size:.9rem;padding:4px 0}
.site-nav a.active,.site-nav a:hover{color:#4338ca;font-weight:600;text-decoration:none}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:22px;height:2px;background:#334155;border-radius:1px;transition:transform .2s,opacity .2s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.ads-top-bar{background:#eef2ff;border-bottom:1px solid #c7d2fe;padding:10px 0}
.applist-title{font-size:.78rem;color:#64748b;text-align:center;margin-bottom:6px}
#ads{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}

.play-shell{max-width:1120px;margin:0 auto;padding:0 20px 56px}
.play-hero{display:grid;grid-template-columns:1fr 1.05fr;gap:36px;align-items:center;padding:40px 0 44px;border-bottom:3px solid #c7d2fe;scroll-margin-top:88px}
.play-hero-visual{position:relative;border-radius:18px;overflow:hidden;box-shadow:0 18px 48px rgba(67,56,202,.14);border:1px solid #e0e7ff}
.play-hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover}
.play-hero-visual .chip{position:absolute;left:14px;bottom:14px;background:rgba(255,255,255,.94);color:#4338ca;font-size:.74rem;font-weight:600;padding:6px 14px;border-radius:999px;border:1px solid #c7d2fe}
.play-hero-copy .hero-tag{display:inline-block;font-size:.76rem;color:#4338ca;background:#eef2ff;border:1px solid #a5b4fc;padding:5px 14px;border-radius:999px;margin-bottom:14px;letter-spacing:.02em}
.play-hero-copy h1{font-size:clamp(1.32rem,3.2vw,1.88rem);line-height:1.36;margin-bottom:16px;color:#0f172a}
.play-hero-copy .lede{color:#334155;margin-bottom:12px;font-size:.98rem;text-align:justify}
.play-jump{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.play-jump a{display:inline-block;padding:8px 16px;font-size:.82rem;color:#4338ca;background:#f8fafc;border:1px solid #c7d2fe;border-radius:24px;font-weight:500;transition:background .15s,color .15s,border-color .15s}
.play-jump a:hover,.play-jump a.is-on{background:#4338ca;color:#fff;border-color:#4338ca;text-decoration:none}

.play-rail{max-width:860px;margin:0 auto;padding-top:8px}
.play-block{padding:38px 0;border-bottom:1px dashed #e0e7ff;scroll-margin-top:88px}
.play-block h2{font-size:1.15rem;margin-bottom:14px;color:#312e81;line-height:1.38}
.play-block p{margin-bottom:12px;color:#334155;font-size:.97rem;text-align:justify}
.play-block figure{margin:20px 0;border-radius:14px;overflow:hidden;border:1px solid #e0e7ff;box-shadow:0 8px 24px rgba(67,56,202,.08)}
.play-block figcaption{font-size:.8rem;color:#64748b;padding:10px 14px;background:#f8fafc;line-height:1.5}
.play-note{background:linear-gradient(90deg,#eef2ff 0%,#fff 100%);border-left:4px solid #6366f1;padding:14px 18px;margin:16px 0 6px;border-radius:0 12px 12px 0;font-size:.93rem;color:#334155}

.play-faq{padding:42px 0 28px}
.play-faq h2{font-size:1.15rem;margin-bottom:18px;color:#312e81}
.faq-row{padding:16px 0;border-top:1px solid #e7e5e4}
.faq-row:first-of-type{border-top:none;padding-top:0}
.faq-row h3{font-size:1rem;font-weight:600;color:#111;margin-bottom:8px}
.faq-row p{color:#444;font-size:.95rem;margin:0;line-height:1.72}

.play-tail{padding:32px 0 8px;border-top:2px solid #e0e7ff}
.play-tail h2{font-size:1.05rem;margin-bottom:12px;color:#312e81}
.play-tail p{font-size:.94rem;color:#444;margin-bottom:10px}

.site-footer{background:#f8fafc;border-top:1px solid #e2e8f0;padding:28px 20px;text-align:center;font-size:.88rem;color:#64748b}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 18px;margin-bottom:10px}
.footer-sub{font-size:.8rem;color:#94a3b8;margin-top:6px}
.prose-page{max-width:740px;margin:40px auto;padding:0 20px 48px}
.prose-page h1{font-size:1.42rem;margin-bottom:16px}
.prose-page p{margin-bottom:12px;color:#333}

@media(max-width:860px){
  .play-hero{grid-template-columns:1fr;gap:24px;padding:28px 0 36px}
  .play-hero-visual{order:-1}
  .nav-toggle{display:flex}
  .site-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid #e2e8f0;padding:14px 20px;box-shadow:0 8px 24px rgba(15,23,42,.08);z-index:210}
  .site-nav.is-open{display:block}
  .site-nav ul{flex-direction:column;gap:4px}
}