:root{
  --color-bg:#0b0f1a;
  --color-surface:#0f1726;
  --color-primary:#1e3a8a; /* deep blue */
  --color-accent:#ff7a18;  /* bright orange */
  --color-text:#e5e7eb;
  --color-muted:#9ca3af;
  --container:1360px;
  --radius:12px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--color-bg);
  color:var(--color-text);
  font-family:"Noto Sans SC", system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "PingFang SC","Hiragino Sans GB","Microsoft YaHei", sans-serif;
  line-height:1.7;
}

img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

.container{max-width:var(--container);margin:0 auto;padding:0 20px}

/* Header */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(11,15,26,.9);backdrop-filter:blur(6px);border-bottom:1px solid rgba(255,255,255,.06)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 20px}
.logo{font-family:Roboto, system-ui, sans-serif;font-weight:900;letter-spacing:.08em;color:#fff}
.menu{list-style:none;display:flex;gap:20px;margin:0;padding:0}
.menu a{padding:8px 10px;border-radius:8px;color:#dbeafe}
.menu a:hover,.menu a:focus{background:rgba(30,58,138,.3)}
.nav-toggle{display:none;background:none;border:1px solid rgba(255,255,255,.2);color:#fff;border-radius:8px;padding:6px 10px}

/* Sections */
.section{padding:72px 0}
.section h2{font-family:Roboto, system-ui, sans-serif;font-weight:900;letter-spacing:.04em;margin:0 0 24px}

/* Hero / Carousel */
.hero{position:relative}
.carousel{position:relative;overflow:hidden;border-radius:0}
.carousel-track{display:flex;transition:transform .6s ease}
.slide{min-width:100%;position:relative;isolation:isolate}
.slide img{width:100%;height:100vh;object-fit:cover;object-position:center}
.slide::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg, rgba(0,0,0,.35), rgba(0,0,0,.6))}
.slide-caption{position:absolute;inset:auto 0 8% 0;z-index:1;text-align:center}
.slide-caption h1,.slide-caption h2{margin:0 0 10px}
.carousel-control{position:absolute;top:50%;transform:translateY(-50%);background:rgba(15,23,38,.6);border:none;color:#fff;width:44px;height:44px;border-radius:50%;cursor:pointer}
.carousel-control:hover{background:rgba(15,23,38,.85)}
.carousel-control.prev{left:16px}
.carousel-control.next{right:16px}
.carousel-indicators{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);display:flex;gap:8px}
.dot{width:10px;height:10px;border-radius:50%;border:2px solid rgba(255,255,255,.7);background:transparent;cursor:pointer}
.dot.is-active{background:var(--color-accent);border-color:var(--color-accent)}
.announcement{position:absolute;right:20px;bottom:20px;background:rgba(255,255,255,.06);backdrop-filter:blur(6px);padding:10px 14px;border-radius:10px;border:1px solid rgba(255,255,255,.12)}
.badge{background:var(--color-accent);color:#111;padding:2px 6px;border-radius:6px;margin-right:8px;font-weight:700}

/* Story */
.section--story{background:linear-gradient(180deg, var(--color-bg), var(--color-surface))}
.story-lead{font-size:1.15rem;color:#f3f4f6;margin:0 0 10px}
.story-highlight{margin:14px 0;padding:14px;border:1px solid rgba(255,255,255,.12);border-radius:12px;background:rgba(255,255,255,.04)}
.story-highlight h3{margin:0 0 8px;font-family:Roboto, system-ui, sans-serif}
.story-points{margin:0;padding-left:18px}
.story-points li{margin:6px 0}
.story-quote{margin:16px 0 0;padding:12px 16px;border-left:4px solid var(--color-accent);background:rgba(255,122,24,.06);border-radius:8px;color:#fde68a}

/* Characters */
.section--characters{background:var(--color-bg)}
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.gallery-item{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid rgba(255,255,255,.06);background:var(--color-surface);box-shadow:var(--shadow)}
.hover-zoom{transition:transform .5s ease}
.gallery-item:hover .hover-zoom{transform:scale(1.04)}

/* Features Tabs */
.section--features{background:linear-gradient(180deg, var(--color-surface), var(--color-bg))}
.tabs{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap}
.tab{background:transparent;border:1px solid rgba(255,255,255,.16);color:#fff;padding:10px 14px;border-radius:999px;cursor:pointer}
.tab.is-active,.tab:hover{border-color:var(--color-accent);box-shadow:0 0 0 2px rgba(255,122,24,.3) inset}
.tab-panels{border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);padding:18px;background:rgba(255,255,255,.03)}
.feature{display:block}
.feature-points{margin:10px 0 0;padding-left:18px}
.feature-points li{margin:6px 0}
.tab-panel[hidden]{display:none}

/* Download */
.section--download{background:var(--color-bg)}
.download-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:18px}
.button{display:inline-block;padding:12px 18px;border-radius:12px;font-weight:700;transition:transform .15s ease, box-shadow .2s ease}
.button--primary{background:linear-gradient(135deg, #ff7a18, #ffb31a);color:#111}
.button--secondary{background:transparent;border:1px solid rgba(255,255,255,.2)}
.button:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(0,0,0,.3)}
.specs-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.specs-col{background:var(--color-surface);border:1px solid rgba(255,255,255,.06);border-radius:12px;padding:14px}
.specs-col h4{margin:6px 0 10px}
.specs-col ul{margin:0;padding-left:18px}
.note{color:var(--color-muted)}

/* Reviews */
.section--reviews{background:linear-gradient(180deg, var(--color-bg), var(--color-surface))}
.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.review-card{background:var(--color-surface);border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:16px;box-shadow:var(--shadow)}
.review-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.review-author{font-weight:800}
.review-rating{color:#ffd166}
.review-content{margin:8px 0 10px;color:#e8eaed}
.review-footer{color:var(--color-muted);font-size:.9rem}

/* Rating summary */
.rating-summary{display:flex;align-items:center;gap:16px;margin:12px 0 18px;padding:12px 14px;border:1px solid rgba(255,255,255,.1);border-radius:12px;background:rgba(255,255,255,.04)}
.rating-number{font-family:Roboto, system-ui, sans-serif;font-weight:900;font-size:2rem}
.rating-number .rating-max{color:var(--color-muted);font-size:1rem;margin-left:4px}
.rating-detail{display:flex;gap:10px;align-items:center;color:#e5e7eb}
.rating-detail .stars{color:#ffd166}

/* FAQ */
.section--faq{background:linear-gradient(180deg, var(--color-surface), var(--color-bg))}
.faq-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.faq-item{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:10px}
.faq-item summary{cursor:pointer;list-style:none;font-weight:700}
.faq-item[open]{background:rgba(255,255,255,.06)}
.faq-item .answer{margin-top:8px;color:#e8eaed}
.faq-item summary::-webkit-details-marker{display:none}

/* Footer */
.site-footer{border-top:1px solid rgba(255,255,255,.08);background:#0a0e18}
.site-footer .container{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:18px 20px}
.site-footer a{color:#bfdbfe}

.friend-links{padding-top:0;display:block}
.friend-links h3{margin:0 0 8px;font-family:Roboto, system-ui, sans-serif}
.friend-list{display:flex;flex-wrap:wrap;gap:12px;margin:6px 0 0;padding:0;list-style:none}
.friend-list a{display:inline-block;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);padding:8px 10px;border-radius:10px}
.friend-list a:hover{background:rgba(255,255,255,.1)}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  .hover-zoom,.carousel-track,.character-info,.button{transition:none}
}