*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#070b14;--bg2:#0f172a;--surface:rgba(15,23,42,.72);
  --line:rgba(148,163,184,.14);--text:#e2e8f0;--muted:#94a3b8;
  --cyan:#22d3ee;--cyan-d:#0891b2;--violet:#818cf8;--violet-d:#6366f1;
  --accent:linear-gradient(135deg,var(--cyan),var(--violet));
  --max:1180px;--pad:clamp(16px,4vw,28px);--sec:clamp(56px,8vw,88px);
  --sans:"Noto Sans SC",system-ui,sans-serif;
  --radius:18px;--shadow:0 24px 60px rgba(0,0,0,.35)
}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--bg);color:var(--text);line-height:1.7;overflow-x:hidden}
a{color:var(--cyan);text-decoration:none}
a:hover{color:#67e8f9}
img,svg{display:block;max-width:100%}
code{font-family:ui-monospace,Consolas,monospace;font-size:.88em;background:rgba(34,211,238,.08);padding:2px 6px;border-radius:4px;color:#a5f3fc}

#scene-canvas{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.55}
.page-wrap{position:relative;z-index:1}

.disclaimer{background:linear-gradient(90deg,rgba(34,211,238,.12),rgba(129,140,248,.12));border-bottom:1px solid var(--line);text-align:center;padding:8px var(--pad);font-size:.76rem;color:var(--muted)}
.disclaimer strong{color:var(--cyan)}

.site-header{position:sticky;top:0;z-index:200;background:rgba(7,11,20,.82);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.header-inner{max-width:var(--max);margin:0 auto;padding:0 var(--pad);height:68px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.02rem;color:#fff;text-decoration:none}
.brand img,.brand svg{width:38px;height:38px;flex-shrink:0}
.brand em{font-style:normal;font-weight:500;font-size:.72rem;color:var(--muted);margin-left:4px;padding:2px 8px;border:1px solid var(--line);border-radius:999px}
.main-nav{display:flex;gap:2px}
.main-nav a{padding:8px 14px;color:var(--muted);font-size:.84rem;font-weight:500;border-radius:10px;text-decoration:none;transition:.2s}
.main-nav a:hover,.main-nav a.on{color:#fff;background:rgba(34,211,238,.1)}
.nav-cta{padding:10px 18px;background:var(--accent);color:#0f172a;font-size:.82rem;font-weight:700;border-radius:10px;text-decoration:none;white-space:nowrap}
.nav-cta:hover{filter:brightness(1.08);color:#0f172a}
.menu-btn{display:none;width:42px;height:42px;border:1px solid var(--line);background:var(--bg2);color:#fff;border-radius:10px;cursor:pointer;font-size:1.1rem}

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

.breadcrumb{padding:18px 0 0;font-size:.78rem;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb span{color:var(--muted);opacity:.5}
.breadcrumb strong{color:var(--text);font-weight:600}

.hero{position:relative;padding:clamp(48px,8vw,96px) 0 clamp(40px,6vw,72px);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,48px);align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;border:1px solid rgba(34,211,238,.25);background:rgba(34,211,238,.06);font-size:.74rem;color:var(--cyan);margin-bottom:18px}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);font-weight:800;line-height:1.15;letter-spacing:-.02em;margin-bottom:16px}
.hero h1 mark{background:none;color:var(--cyan)}
.hero-lead{font-size:1rem;color:var(--muted);max-width:540px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 24px;font-weight:700;font-size:.88rem;border-radius:12px;text-decoration:none;border:none;cursor:pointer;transition:transform .2s,box-shadow .2s}
.btn-primary{background:var(--accent);color:#0f172a;box-shadow:0 8px 28px rgba(34,211,238,.25)}
.btn-primary:hover{transform:translateY(-2px);color:#0f172a}
.btn-ghost{background:transparent;color:#fff;border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--cyan);background:rgba(34,211,238,.06)}

.hero-3d{perspective:900px;height:min(420px,52vw);display:flex;align-items:center;justify-content:center}
.plane-stage{position:relative;width:100%;height:100%;transform-style:preserve-3d;animation:stageFloat 8s ease-in-out infinite}
.plane-core{position:absolute;left:50%;top:50%;width:min(320px,70vw);height:min(320px,70vw);margin:-160px 0 0 -160px;transform-style:preserve-3d;animation:planeSpin 18s linear infinite}
.plane-body{position:absolute;inset:0;transform-style:preserve-3d}
.plane-face{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
.plane-face svg{width:72%;height:72%;filter:drop-shadow(0 20px 40px rgba(34,211,238,.35))}
.plane-orbit{position:absolute;inset:-10%;border:1px dashed rgba(129,140,248,.25);border-radius:50%;transform:rotateX(72deg);animation:orbitSpin 12s linear infinite reverse}
.hero-visual-card{position:absolute;right:0;bottom:0;width:min(360px,58%);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);transform:rotateY(-8deg) rotateX(4deg);animation:cardTilt 6s ease-in-out infinite alternate}
.hero-visual-card img{width:100%;height:auto;object-fit:cover;display:block}
@keyframes stageFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
@keyframes planeSpin{0%{transform:rotateY(0deg) rotateX(12deg)}100%{transform:rotateY(360deg) rotateX(12deg)}}
@keyframes orbitSpin{to{transform:rotateX(72deg) rotateZ(360deg)}}
@keyframes cardTilt{0%{transform:rotateY(-6deg) rotateX(2deg)}100%{transform:rotateY(-12deg) rotateX(6deg)}}

.stats-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:-20px;margin-bottom:var(--sec);position:relative;z-index:2}
.stat-card{padding:20px 16px;background:var(--surface);backdrop-filter:blur(12px);border:1px solid var(--line);border-radius:14px;text-align:center}
.stat-card b{display:block;font-size:1.5rem;font-weight:800;background:var(--accent);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-card span{font-size:.74rem;color:var(--muted)}

.section{padding:var(--sec) 0}
.section-head{margin-bottom:32px}
.section-head h2{font-size:clamp(1.35rem,3vw,1.85rem);font-weight:800;margin-bottom:8px}
.section-head p{color:var(--muted);font-size:.92rem;max-width:640px}
.section-label{font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--violet);margin-bottom:8px}

.glass-panel{background:var(--surface);backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(24px,4vw,36px)}

.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.feature-card{padding:24px 20px;background:rgba(15,23,42,.6);border:1px solid var(--line);border-radius:16px;transition:transform .3s,border-color .3s;transform-style:preserve-3d}
.feature-card:hover{transform:translateY(-4px) rotateX(2deg);border-color:rgba(34,211,238,.35)}
.feature-card .icon{width:44px;height:44px;border-radius:12px;background:rgba(34,211,238,.1);display:flex;align-items:center;justify-content:center;margin-bottom:14px;color:var(--cyan)}
.feature-card h3{font-size:.95rem;font-weight:700;margin-bottom:8px}
.feature-card p{font-size:.84rem;color:var(--muted);line-height:1.65}

.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.news-card{display:flex;flex-direction:column;background:rgba(15,23,42,.65);border:1px solid var(--line);border-radius:16px;overflow:hidden;text-decoration:none;color:inherit;transition:transform .25s,border-color .25s}
.news-card:hover{transform:translateY(-5px);border-color:rgba(129,140,248,.4)}
.news-card img,.news-card .thumb{width:100%;aspect-ratio:5/3;object-fit:cover;background:var(--bg2)}
.news-card-body{padding:18px 20px 22px;flex:1;display:flex;flex-direction:column}
.news-card time{font-size:.72rem;color:var(--cyan);font-weight:600}
.news-card h3{font-size:.95rem;font-weight:700;margin:8px 0;line-height:1.45}
.news-card p{font-size:.82rem;color:var(--muted);flex:1;line-height:1.6}
.news-card .read{font-size:.78rem;font-weight:600;color:var(--violet);margin-top:12px}

.news-row{display:grid;grid-template-columns:1.2fr 1fr;gap:18px;margin-bottom:18px}
.news-feature{display:grid;grid-template-columns:1fr 1fr;gap:0;background:rgba(15,23,42,.65);border:1px solid var(--line);border-radius:16px;overflow:hidden;text-decoration:none;color:inherit}
.news-feature:hover{border-color:rgba(34,211,238,.3)}
.news-feature img,.news-feature .thumb{height:100%;min-height:220px;object-fit:cover}
.news-feature .news-card-body{padding:28px}
.news-side-list{display:flex;flex-direction:column;gap:12px}
.news-mini{display:flex;gap:14px;padding:16px;background:rgba(15,23,42,.65);border:1px solid var(--line);border-radius:14px;text-decoration:none;color:inherit;transition:border-color .2s}
.news-mini:hover{border-color:rgba(129,140,248,.35)}
.news-mini img,.news-mini .thumb{width:88px;height:66px;border-radius:8px;object-fit:cover;flex-shrink:0}
.news-mini h4{font-size:.86rem;font-weight:600;line-height:1.45;margin-bottom:4px}
.news-mini time{font-size:.7rem;color:var(--muted)}

.timeline{margin:20px 0;padding-left:22px;border-left:2px solid rgba(34,211,238,.25)}
.tl-item{position:relative;padding:0 0 24px 20px}
.tl-item::before{content:'';position:absolute;left:-29px;top:6px;width:10px;height:10px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px rgba(34,211,238,.5)}
.tl-item h4{font-size:.9rem;font-weight:700;margin-bottom:4px}
.tl-item p{font-size:.84rem;color:var(--muted)}

.prose{font-size:.92rem;color:var(--muted);line-height:1.8}
.prose p{margin-bottom:14px}
.prose h2,.prose h3{color:var(--text);font-weight:700;margin:24px 0 12px}
.prose h2{font-size:1.2rem}.prose h3{font-size:1rem}
.prose ul,.prose ol{padding-left:20px;margin-bottom:14px}
.legal-prose .note{padding:12px 16px;background:rgba(34,211,238,.08);border-left:3px solid var(--cyan);border-radius:0 8px 8px 0;margin-bottom:16px;font-size:.86rem}
.prose li{margin-bottom:6px}
.author-box{display:flex;gap:16px;padding:20px;background:rgba(34,211,238,.04);border:1px solid rgba(34,211,238,.15);border-radius:14px;margin:24px 0}
.author-box .avatar{width:52px;height:52px;border-radius:50%;background:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:800;color:#0f172a;flex-shrink:0}
.author-box b{display:block;font-size:.88rem;color:var(--text)}
.author-box span{font-size:.78rem;color:var(--muted)}

.dl-hero{text-align:center;padding:clamp(36px,5vw,56px) 0 12px}
.dl-hero h1{font-size:clamp(1.6rem,4vw,2.2rem);font-weight:800;margin-bottom:10px}
.dl-hero p{color:var(--muted);max-width:620px;margin:0 auto;font-size:.92rem}

.dl-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:28px 0}
.dl-card{padding:28px 22px;background:var(--surface);border:1px solid var(--line);border-radius:18px;text-align:center;transition:transform .3s,box-shadow .3s;transform-style:preserve-3d}
.dl-card:hover{transform:translateY(-6px) rotateX(3deg);box-shadow:0 20px 50px rgba(0,0,0,.3);border-color:rgba(34,211,238,.3)}
.dl-card .os-icon{width:56px;height:56px;margin:0 auto 16px;color:var(--cyan)}
.dl-card h3{font-size:1rem;font-weight:700;margin-bottom:6px}
.dl-card .ver{font-size:.78rem;color:var(--muted);margin-bottom:18px;line-height:1.55}
.dl-card .btn{width:100%;justify-content:center}

.mobile-guide{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:32px}
.mobile-card{padding:24px;background:rgba(15,23,42,.6);border:1px solid var(--line);border-radius:16px}
.mobile-card h3{display:flex;align-items:center;gap:10px;font-size:.95rem;margin-bottom:12px}
.mobile-card p{font-size:.84rem;color:var(--muted);margin-bottom:14px;line-height:1.65}
.mobile-card ol{padding-left:18px;font-size:.84rem;color:var(--muted)}
.mobile-card li{margin-bottom:8px}

.spec-table{width:100%;border-collapse:collapse;font-size:.84rem;margin:16px 0}
.spec-table th,.spec-table td{padding:12px 14px;border:1px solid var(--line);text-align:left}
.spec-table th{background:rgba(34,211,238,.08);color:var(--cyan);font-weight:600}
.spec-table td{color:var(--muted)}

.faq-list{display:flex;flex-direction:column;gap:10px}
.faq-list details{background:rgba(15,23,42,.5);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.faq-list summary{padding:16px 18px;font-weight:600;font-size:.88rem;cursor:pointer;list-style:none}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:'+';float:right;color:var(--cyan)}
.faq-list details[open] summary::after{content:'−'}
.faq-list details p{padding:0 18px 16px;font-size:.84rem;color:var(--muted);line-height:1.7}

.article-header{margin-bottom:28px;padding-bottom:24px;border-bottom:1px solid var(--line)}
.article-header h1{font-size:clamp(1.4rem,3.5vw,2rem);font-weight:800;line-height:1.3;margin:12px 0}
.article-meta{display:flex;flex-wrap:wrap;gap:12px;font-size:.78rem;color:var(--muted)}
.article-meta span{display:flex;align-items:center;gap:6px}
.news-feature img,.news-feature .thumb{height:100%;min-height:220px;object-fit:cover}
.news-mini img,.news-mini .thumb{object-fit:cover}
.article-cover{border-radius:var(--radius);overflow:hidden;margin-bottom:28px;border:1px solid var(--line);max-height:460px}
.article-cover img{width:100%;max-height:460px;object-fit:cover;display:block}
.article-figure{margin:28px 0;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:rgba(15,23,42,.4)}
.article-figure img{width:100%;max-height:380px;object-fit:cover;display:block}
.article-figure figcaption{padding:12px 16px;font-size:.78rem;color:var(--muted);line-height:1.55;border-top:1px solid var(--line)}
.article-figures{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:28px 0}
.article-figures .article-figure{margin:0}
.related-articles{margin-top:48px;padding-top:32px;border-top:1px solid var(--line)}
.related-articles h2{font-size:1rem;margin-bottom:18px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.related-grid a{display:block;padding:14px;background:rgba(15,23,42,.5);border:1px solid var(--line);border-radius:12px;text-decoration:none;color:inherit;font-size:.84rem;font-weight:600;line-height:1.45;transition:border-color .2s}
.related-grid a:hover{border-color:rgba(34,211,238,.35)}
.related-grid time{display:block;font-size:.7rem;color:var(--muted);font-weight:500;margin-bottom:6px}
.source-note{margin-top:28px;padding:16px 18px;border-left:3px solid var(--violet);background:rgba(129,140,248,.06);border-radius:0 12px 12px 0;font-size:.8rem;color:var(--muted)}

.site-footer{margin-top:var(--sec);border-top:1px solid var(--line);background:rgba(7,11,20,.9);padding:48px 0 32px}
.footer-grid{max-width:var(--max);margin:0 auto;padding:0 var(--pad);display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer-brand p{font-size:.82rem;color:var(--muted);margin-top:10px;line-height:1.65;max-width:280px}
.footer-col h4{font-size:.82rem;font-weight:700;margin-bottom:14px;color:var(--text)}
.footer-col a{display:block;font-size:.8rem;color:var(--muted);margin-bottom:8px;text-decoration:none}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{max-width:var(--max);margin:32px auto 0;padding:20px var(--pad) 0;border-top:1px solid var(--line);font-size:.76rem;color:var(--muted);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}

.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:none}

.home-sec{padding:clamp(40px,6vw,56px) 0}
.home-sec+.home-sec{border-top:1px solid var(--line)}
.home-sec-hd{margin-bottom:20px}
.home-sec-hd .tag{font-size:.68rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--cyan);margin-bottom:6px;display:block}
.home-sec-hd h2{font-size:clamp(1.15rem,2.5vw,1.45rem);font-weight:800}
.home-sec-hd p{font-size:.86rem;color:var(--muted);margin-top:6px}
.cat-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
.cat-item{display:block;padding:16px 12px;background:rgba(15,23,42,.55);border:1px solid var(--line);border-radius:12px;text-align:center;text-decoration:none;color:inherit;transition:.2s}
.cat-item:hover{border-color:var(--cyan);transform:translateY(-2px)}
.cat-item .ci{font-size:1.4rem;margin-bottom:8px}
.cat-item b{display:block;font-size:.82rem;font-weight:700;margin-bottom:4px}
.cat-item span{font-size:.7rem;color:var(--muted);line-height:1.4}
.tutorial-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.tutorial-item{padding:20px;background:rgba(15,23,42,.5);border:1px solid var(--line);border-radius:12px;text-decoration:none;color:inherit}
.tutorial-item:hover{border-color:var(--violet)}
.tutorial-item h3{font-size:.9rem;font-weight:700;margin-bottom:6px}
.tutorial-item p{font-size:.8rem;color:var(--muted);line-height:1.55}
.update-list{display:flex;flex-direction:column;gap:10px}
.update-row{display:flex;align-items:center;gap:14px;padding:14px 16px;background:rgba(15,23,42,.45);border:1px solid var(--line);border-radius:10px;text-decoration:none;color:inherit}
.update-row:hover{border-color:var(--cyan)}
.update-row time{font-size:.72rem;color:var(--cyan);font-weight:600;white-space:nowrap;min-width:88px}
.update-row span{font-size:.84rem;font-weight:600}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.contact-box{padding:20px;background:rgba(34,211,238,.05);border:1px solid rgba(34,211,238,.15);border-radius:12px}
.contact-box h3{font-size:.88rem;font-weight:700;margin-bottom:8px;color:var(--cyan)}
.contact-box p,.contact-box li{font-size:.82rem;color:var(--muted);line-height:1.65}
.contact-box ul{padding-left:18px;margin-top:8px}
.brand-box{padding:24px;background:linear-gradient(135deg,rgba(34,211,238,.08),rgba(129,140,248,.08));border:1px solid var(--line);border-radius:14px}
.brand-box h3{font-size:1rem;font-weight:800;margin-bottom:10px}
.brand-box p{font-size:.84rem;color:var(--muted);line-height:1.7;margin-bottom:8px}
.brand-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px;font-size:.72rem;color:var(--muted)}
.brand-meta span{padding:4px 10px;background:rgba(15,23,42,.5);border-radius:999px;border:1px solid var(--line)}

@media(max-width:960px){
  .hero-grid,.news-row,.news-feature,.feature-grid,.dl-cards,.mobile-guide,.footer-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr 1fr}
  .stats-bar{grid-template-columns:repeat(2,1fr)}
  .main-nav{display:none;position:absolute;top:68px;left:0;right:0;flex-direction:column;background:rgba(7,11,20,.98);padding:12px var(--pad);border-bottom:1px solid var(--line)}
  .main-nav.open{display:flex}
  .menu-btn{display:block}
  .hero-3d{height:280px;margin-top:20px}
  .plane-core{width:240px;height:240px;margin:-120px 0 0 -120px}
  .hero-visual-card{position:relative;width:100%;transform:none;animation:none;margin-top:16px}
}
@media(max-width:560px){
  .news-grid,.stats-bar{grid-template-columns:1fr}
  .news-feature{grid-template-columns:1fr}
  .news-feature .thumb{min-height:160px}
  .article-figures,.related-grid{grid-template-columns:1fr}
  .cat-grid,.tutorial-list,.contact-grid{grid-template-columns:1fr}
}

.friend-links-bar{padding:12px var(--pad,16px);text-align:center;font-size:.74rem;color:var(--muted,#64748b);border-top:1px solid var(--line,#e2e8f0);background:rgba(255,255,255,.6)}
.friend-links-bar .friend-links-label{margin-right:8px;font-weight:600}
.friend-links-bar a{margin:0 10px;color:var(--blue,var(--em,#2563eb));text-decoration:none}
.friend-links-bar a:hover{text-decoration:underline}