:root{
  --bg:#0D0B10;--panel:#17131D;--panel2:#211A29;--line:#382A3D;--red:#E62B46;
  --red2:#A91935;--purple:#7650A4;--text:#F6F2F8;--muted:#D7CCDD;--active:#FF5570;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.8}
a{color:inherit;text-decoration:none}
a:hover{color:#fff}
button,input{font:inherit}
img{display:block;max-width:100%;height:auto;object-fit:contain;object-position:center}
.shell{width:min(calc(100% - 48px),var(--max));margin-inline:auto}
.skip-link{position:absolute;left:-9999px;top:8px;background:#fff;color:#000;padding:8px 12px;z-index:100}
.skip-link:focus{left:8px}
.site-header{background:#100d14;border-bottom:1px solid var(--line)}
.brand-row{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-logo{max-height:36px;width:auto}
.brand-copy{display:flex;align-items:baseline;gap:10px;white-space:nowrap}
.brand-copy strong{font-size:20px;letter-spacing:.04em}
.brand-copy em{font-size:12px;color:var(--muted);font-style:normal;letter-spacing:.12em}
.header-tools{display:flex;align-items:center;gap:8px}
.header-tools a,.tool-button,.menu-button{border:0;background:transparent;color:var(--muted);padding:9px 10px;border-radius:8px;cursor:pointer}
.header-tools a:hover,.tool-button:hover,.menu-button:hover{color:#fff;background:var(--panel2)}
.menu-button{display:none}
.main-nav{border-top:1px solid #231a28;border-bottom:1px solid var(--line);background:#141018}
.main-nav-inner{display:flex;align-items:center;gap:28px;min-height:46px}
.main-nav a{position:relative;font-size:15px;font-weight:650;color:var(--muted);padding:12px 0}
.main-nav a.active{color:#fff}
.main-nav a.active:after{content:"";position:absolute;left:0;right:0;bottom:4px;height:2px;background:var(--red);border-radius:2px}
.quick-nav-wrap{background:#0f0c12;border-bottom:1px solid #281f2d}
.quick-nav{display:flex;gap:10px;overflow-x:auto;scrollbar-width:none;padding-block:9px}
.quick-nav::-webkit-scrollbar{display:none}
.quick-nav a{flex:0 0 auto;font-size:14px;color:var(--muted);padding:4px 0;border-bottom:2px solid transparent}
.quick-nav a.active{color:#fff;font-weight:700;border-bottom-color:var(--red)}
.search-panel{padding:16px 0 18px}
.search-panel label{font-weight:700;display:block;margin-bottom:8px}
.search-box{display:flex;gap:10px}
.search-box input{width:100%;background:var(--panel);border:1px solid var(--line);color:#fff;padding:11px 12px;border-radius:9px;outline:none}
.search-box input:focus{border-color:var(--active);box-shadow:0 0 0 3px rgba(255,85,112,.15)}
.search-box button,.menu-close{background:var(--red);border:0;color:#fff;border-radius:9px;padding:10px 16px;cursor:pointer}
.search-results{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.search-results a{background:var(--panel2);border:1px solid var(--line);padding:5px 10px;border-radius:8px;color:var(--muted)}
.all-menu{background:#141018;border-bottom:1px solid var(--line)}
.menu-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;padding-block:24px}
.menu-group h2{font-size:15px;margin:0 0 8px;color:#fff}
.menu-group div{display:grid;grid-template-columns:1fr;gap:4px}
.menu-group a{font-size:14px;color:var(--muted);padding:3px 0}
.menu-close{align-self:end;justify-self:start}
.noscript-nav{display:flex;flex-wrap:wrap;gap:8px;padding-block:12px}
.noscript-nav a{font-size:13px;color:var(--muted);border:1px solid var(--line);padding:4px 8px;border-radius:6px}

main{min-height:60vh}
.page-hero{padding:52px 0 36px}
.breadcrumb{font-size:13px;color:var(--muted);margin:0 0 10px}
.breadcrumb a{color:#fff}
.kicker{font-size:13px;color:var(--active);font-weight:800;letter-spacing:.12em;margin:0 0 8px}
h1,h2,h3{line-height:1.32;color:#fff;margin-top:0}
h1{font-size:34px;margin-bottom:14px;letter-spacing:-.02em}
h2{font-size:25px;margin-bottom:12px}
h3{font-size:19px;margin-bottom:8px}
.lede{max-width:780px;font-size:17px;color:var(--muted);margin:0}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:8px 14px;background:var(--red);color:#fff;border-radius:9px;font-weight:700}
.button.secondary{background:var(--panel2);border:1px solid var(--line)}
.hero-media{margin-top:28px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:10px;display:flex;justify-content:center}
.hero-media img{width:auto;max-width:100%;max-height:280px}
.article-shell{width:min(calc(100% - 48px),780px);margin-inline:auto}
.content-stack{padding-bottom:60px}
.content-section{padding:34px 0;border-top:1px solid var(--line)}
.content-section p{margin:0 0 14px;color:var(--text)}
.content-section p:last-child{margin-bottom:0}
.content-image-wrap{display:flex;justify-content:center;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:10px;margin:0 auto 28px}
.content-image{width:auto;max-width:100%;max-height:220px}
.portrait-image{max-height:360px;width:auto}
.app-image{max-height:400px;width:auto}
.icon-image{width:auto;max-width:72px;max-height:72px}
.callout{border-left:3px solid var(--purple);background:var(--panel);padding:16px 18px;border-radius:0 10px 10px 0;margin:24px 0;color:var(--muted)}
.numbered-paths{display:grid;gap:12px;margin:20px 0}
.path-row{display:grid;grid-template-columns:52px 1fr auto;gap:14px;align-items:center;padding:16px;background:var(--panel);border:1px solid var(--line);border-radius:11px}
.path-row b{font-size:18px;color:var(--active)}
.path-row a{color:#fff;font-weight:700}
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.feature-card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:20px}
.feature-card p{color:var(--muted);margin-bottom:0}
.home-band{padding:52px 0;border-top:1px solid var(--line)}
.home-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:start}
.home-index{display:grid;gap:12px}
.home-index a{display:block;padding:14px 16px;background:var(--panel);border:1px solid var(--line);border-radius:10px}
.home-index small{display:block;color:var(--muted);margin-top:3px}
.faq-list{display:grid;gap:14px}
.faq-item{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px}
.faq-item h2{font-size:19px}
.faq-item p{margin:0;color:var(--muted)}
.related{padding:34px 0 58px;border-top:1px solid var(--line)}
.related-links{display:flex;flex-wrap:wrap;gap:10px}
.related-links a{background:var(--panel2);border:1px solid var(--line);padding:8px 12px;border-radius:8px;color:#fff}

.site-footer{border-top:1px solid var(--line);background:#0b090d;padding:40px 0 26px}
.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}
.footer-grid h2{font-size:15px;margin-bottom:10px}
.footer-grid a{display:block;color:var(--muted);font-size:14px;padding:3px 0}
.footer-base{border-top:1px solid #241b29;margin-top:28px;padding-top:20px;color:var(--muted);font-size:13px}
.footer-base p{margin:4px 0}
.mobile-bottom{display:none}

@media(max-width:900px){
  .shell{width:min(calc(100% - 40px),var(--max))}
  .brand-row{gap:14px}
  .header-tools a:first-child{display:none}
  .menu-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .home-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  body{font-size:15.5px;line-height:1.76;padding-bottom:calc(56px + env(safe-area-inset-bottom))}
  .shell,.article-shell{width:calc(100% - 32px)}
  .brand-row{height:60px}
  .brand-logo{max-height:32px}
  .brand-copy em{display:none}
  .header-tools>a{display:none}
  .tool-button,.menu-button{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:7px 9px}
  .tool-button{font-size:0}
  .tool-button:after{content:"搜索";font-size:14px}
  .menu-button{font-size:0}
  .menu-button:after{content:"全部栏目";font-size:14px}
  .main-nav{display:none}
  .quick-nav{padding-block:8px}
  .menu-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 14px;padding-block:20px}
  .menu-group div{grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 10px}
  .menu-group a{min-height:34px;display:flex;align-items:center}
  .page-hero{padding:34px 0 28px}
  h1{font-size:27px}
  h2{font-size:21px}
  h3{font-size:18px}
  .lede{font-size:16px}
  .content-section{padding:28px 0}
  .content-image{max-height:180px}
  .portrait-image{max-height:320px}
  .app-image{max-height:320px}
  .hero-media img{max-height:220px}
  .card-grid{grid-template-columns:1fr}
  .home-band{padding:36px 0}
  .path-row{grid-template-columns:44px 1fr}
  .path-row a{grid-column:2}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 18px}
  .mobile-bottom{position:fixed;z-index:50;left:0;right:0;bottom:0;height:calc(56px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(4,1fr);background:#100d14;border-top:1px solid var(--line)}
  .mobile-bottom a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;font-size:12px;color:var(--muted)}
  .mobile-bottom a span{font-size:15px;line-height:1}
  .mobile-bottom a.active{color:#fff;font-weight:700}
  .mobile-bottom a.active:before{content:"";position:absolute;top:0;width:34px;height:2px;background:var(--red)}
}
@media(max-width:360px){
  .shell,.article-shell{width:calc(100% - 28px)}
  .brand-copy strong{font-size:18px}
  .header-tools{gap:2px}
  .menu-grid{grid-template-columns:1fr}
  .menu-group div{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}
:focus-visible{outline:2px solid var(--active);outline-offset:3px}