*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#07111F;color:#E7EEF8;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.82;overflow-x:hidden}
a{color:#9FC7FF;text-decoration:none}
a:hover{color:#7EB6FF}
img{max-width:100%}
button,a{touch-action:manipulation}
.site-header{position:sticky;top:0;z-index:9000;width:100%;background:#0B1524;border-bottom:1px solid rgba(61,139,255,.28);box-shadow:0 8px 22px rgba(0,0,0,.35)}
.header-inner{max-width:1120px;min-height:64px;margin:0 auto;padding:0 16px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.site-logo{display:inline-flex;align-items:center;min-width:132px}
.site-logo img{display:block;height:40px;width:auto;max-width:168px;object-fit:contain}
.logo-placeholder{display:flex;align-items:center;justify-content:center;min-width:132px;height:40px;padding:0 12px;border-radius:8px;background:#07111F;color:#FFFFFF;font-weight:800}
.nav-core{display:flex;align-items:center;gap:2px;flex:1;justify-content:center}
.nav-core a{color:#E7EEF8;padding:8px 11px;font-weight:700;text-decoration:none;white-space:nowrap}
.nav-core a.is-current,.nav-core a:hover{color:#FFFFFF;box-shadow:inset 0 -2px 0 #3D8BFF}
.main-btn{display:inline-flex;align-items:center;justify-content:center;height:40px;min-width:92px;padding:0 18px;background:linear-gradient(180deg,#5BA3FF 0%,#2F74F0 100%);color:#FFFFFF;border-radius:999px;text-decoration:none;font-weight:700;box-shadow:0 8px 18px rgba(47,116,240,.28);touch-action:manipulation}
.main-btn:hover{color:#FFFFFF;filter:brightness(1.05)}
.menu-toggle{display:none}
.channel-bar{background:#0E1C30;border-bottom:1px solid rgba(61,139,255,.16)}
.channel-inner{max-width:1120px;margin:0 auto;padding:0 16px;display:flex;gap:2px;overflow-x:auto;scrollbar-width:thin}
.channel-inner a{flex:0 0 auto;padding:10px 11px;color:#9AABC4;font-size:14px;white-space:nowrap}
.channel-inner a:hover{color:#7EB6FF}
.site-main{min-height:60vh}
.container{max-width:1120px;margin:0 auto;padding:0 16px}
.reading{max-width:800px;margin:0 auto}
.hero{padding:52px 0 44px}
.hero-grid{display:grid;grid-template-columns:42% 58%;gap:28px;align-items:center}
.hero h1,.page-head h1{margin:0 0 18px;color:#FFFFFF;font-size:clamp(32px,4vw,42px);line-height:1.25}
.hero p,.page-head p{color:#D7E4F5}
.page-head{padding:42px 0 22px}
.breadcrumb{font-size:14px;color:#7E8DA3;margin-bottom:14px}
.breadcrumb a{color:#9AABC4}
.section{padding:38px 0}
.section h2{color:#FFFFFF;font-size:26px;line-height:1.35;margin:0 0 18px}
.section p{margin:0 0 16px}
.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:16px;background:#07111F;aspect-ratio:3/4;border:1px solid rgba(61,139,255,.18)}
.media.wide{aspect-ratio:16/9}
.media > img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center center;display:block}
.placeholder{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#0B1524}
.hero .media{min-height:420px;max-height:520px}
.poster-pair{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.directory{display:grid;gap:10px}
.directory a{display:flex;justify-content:space-between;gap:20px;padding:16px 18px;border:1px solid rgba(61,139,255,.22);border-radius:14px;background:#101C30;color:#FFFFFF}
.directory span{color:#9AABC4;text-align:right}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card,.notice-box,.link-box,.step{background:#101C30;border:1px solid rgba(61,139,255,.22);border-radius:14px;padding:20px;box-shadow:0 14px 32px rgba(0,0,0,.18)}
.card h2,.card h3,.notice-box h2,.link-box h2{margin-top:0;color:#FFFFFF}
.steps{display:grid;gap:14px}
.step strong{display:block;color:#FFFFFF;margin-bottom:6px}
.related{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.related a{padding:8px 12px;border-radius:999px;background:#0E1C30;border:1px solid rgba(61,139,255,.24)}
.app-strip{display:grid;grid-template-columns:180px 1fr;gap:24px;align-items:center;background:#101C30;border:1px solid rgba(61,139,255,.22);padding:18px;border-radius:16px}
.app-strip .media{aspect-ratio:16/9}
.callout{padding:24px;border-left:3px solid #3D8BFF;background:#0B1524;border-radius:0 14px 14px 0}
.article ul{padding-left:1.2em}
.article li{margin:8px 0}
.article .media{height:min(360px,70vw);aspect-ratio:3/4;margin:22px 0}
.faq-list details{background:#101C30;border:1px solid rgba(61,139,255,.22);border-radius:14px;padding:16px 18px;margin-bottom:12px}
.faq-list summary{cursor:pointer;color:#FFFFFF;font-weight:700}
.site-footer{background:#060E18;border-top:1px solid #3D8BFF;margin-top:50px}
.footer-grid{max-width:1120px;margin:0 auto;padding:38px 16px;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
.footer-grid h2{font-size:17px;color:#FFFFFF;margin:0 0 10px}
.footer-grid a{display:block;color:#D5E2F2;margin:7px 0}
.footer-grid p{color:#9AABC4}
.footer-bottom{max-width:1120px;margin:0 auto;padding:18px 16px 28px;border-top:1px solid rgba(61,139,255,.18);color:#9AABC4}
.float-tools{position:fixed;right:14px;top:40%;z-index:8000;width:100px;background:#0B1524;border:1px solid rgba(61,139,255,.28);border-radius:14px;padding:10px;box-shadow:0 14px 32px rgba(0,0,0,.35)}
.float-tools a,.float-tools button{display:flex;width:100%;min-height:40px;align-items:center;justify-content:center;margin:6px 0;border:0;border-radius:10px;background:#0E1C30;color:#FFFFFF;font:inherit;cursor:pointer}
.float-tools .main-btn{background:linear-gradient(180deg,#5BA3FF 0%,#2F74F0 100%)}
.mobile-bottom{display:none}
.mobile-drawer,.drawer-mask{display:none}
body.drawer-open{overflow:hidden}
@media(max-width:1180px){
  .container,.footer-grid,.footer-bottom{padding-left:20px;padding-right:76px}
}
@media(max-width:980px){
  body{padding-bottom:68px}
  .header-inner{min-height:60px;display:grid;grid-template-columns:72px 1fr 104px;gap:8px}
  .menu-toggle{display:inline-flex;align-items:center;justify-content:flex-start;background:none;border:0;color:#7EB6FF;min-height:40px;font-weight:700;padding:0;cursor:pointer}
  .nav-core,.channel-bar,.float-tools{display:none}
  .header-action{justify-self:end;min-width:92px;padding:0 14px}
  .site-logo{justify-self:center;min-width:0}
  .site-logo img{max-width:146px;height:36px}
  .mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);background:#0E1A2C;z-index:12000;transform:translateX(-105%);transition:transform .2s ease;box-shadow:18px 0 40px rgba(42,24,68,.16);overflow-y:auto}
  .mobile-drawer.is-open{transform:translateX(0)}
  .drawer-mask{display:none;position:fixed;inset:0;background:rgba(42,24,68,.38);z-index:11000;opacity:0;pointer-events:none;transition:opacity .18s ease}
  .drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid rgba(61,139,255,.22)}
  .drawer-close{min-height:40px;border:0;border-radius:10px;background:#101C30;color:#FFFFFF;padding:0 14px}
  .drawer-groups{padding:10px 16px 28px}
  .drawer-groups section{padding:10px 0;border-bottom:1px solid rgba(61,139,255,.12)}
  .drawer-groups h2{font-size:14px;color:#7E8DA3;margin:4px 0 8px}
  .drawer-groups a{display:block;min-height:40px;padding:7px 0;color:#E7EEF8}
  .container,.footer-grid,.footer-bottom{padding-left:16px;padding-right:16px}
  .hero{padding:30px 0}
  .hero-grid{grid-template-columns:1fr}
  .hero .media{min-height:280px;max-height:360px}
  .poster-pair,.card-grid,.footer-grid{grid-template-columns:1fr}
  .app-strip{grid-template-columns:1fr}
  .directory a{align-items:flex-start;flex-direction:column;gap:5px}
  .directory span{text-align:left}
  .article .media{height:min(260px,68vw)}
  .mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:8500;display:grid;grid-template-columns:repeat(4,1fr);background:#07111F;border-top:1px solid rgba(61,139,255,.35)}
  .mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:56px;color:#D5E2F2}
}
@media(max-width:430px){
  .header-inner{grid-template-columns:64px 1fr 96px;padding:0 10px}
  .site-logo img{max-width:132px;height:34px}
  .header-action{min-width:88px;padding:0 10px;font-size:14px}
  .hero h1,.page-head h1{font-size:28px}
}
@media(max-width:390px){
  .site-logo img{max-width:122px}
  .header-inner{grid-template-columns:58px 1fr 90px}
  .header-action{min-width:84px;font-size:13px}
}
@media(max-width:375px){
  .header-inner{grid-template-columns:54px 1fr 86px}
  .menu-toggle{font-size:13px}
  .site-logo img{max-width:112px}
  .header-action{min-width:82px;padding:0 8px}
}