:root{
  --bg:#08090b;--bg-1:#0e1013;--bg-2:#14171c;--bg-3:#1a1e24;
  --line:#22262d;--line-2:#2f343d;
  --text:#eceef1;--text-2:#aab0ba;--text-3:#868d99;
  --gold:#c9a227;--gold-2:#e8c351;--gold-dim:rgba(201,162,39,.14);
  --ok:#4ec26a;--warn:#e0a02a;--hot:#e0603a;--info:#5aa2e8;--violet:#a078dc;
  --radius-sm:6px;--radius-md:10px;--radius-lg:16px;
  --shell:1280px;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"SF Mono",ui-monospace,"JetBrains Mono","Cascadia Mono",Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-cn);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25}
p{margin:0}
button,input{font:inherit;color:inherit}
::selection{background:var(--gold);color:#08090b}
:focus-visible{outline:2px solid var(--gold-2);outline-offset:3px;border-radius:3px}
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:20px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

.site-header{background:var(--bg);border-bottom:1px solid var(--line)}
.header-bar{display:flex;align-items:center;gap:28px;min-height:76px;padding-block:14px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:38px;height:38px;flex-shrink:0;border-radius:9px;background:linear-gradient(155deg,var(--gold-2),var(--gold));display:grid;place-items:center;box-shadow:0 2px 10px rgba(201,162,39,.22)}
.brand-mark svg{width:22px;height:22px;color:#0a0b0d}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:19px;font-weight:800;letter-spacing:.02em}
.brand-name em{font-style:normal;color:var(--gold-2)}
.brand-sub{font-size:11px;color:var(--text-3);letter-spacing:.16em;text-transform:uppercase;font-family:var(--font-num)}
.status{display:flex;align-items:center;gap:20px;flex-shrink:0;margin-left:auto}
.status-live{display:flex;align-items:center;gap:8px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--ok);flex-shrink:0;animation:ping 2.4s ease-out infinite}
@keyframes ping{0%{box-shadow:0 0 0 0 rgba(78,194,106,.55)}70%{box-shadow:0 0 0 8px rgba(78,194,106,0)}100%{box-shadow:0 0 0 0 rgba(78,194,106,0)}}
.status-live span{font-size:13px;color:var(--text-2)}
.status-live b{color:var(--ok);font-family:var(--font-num)}
.status-stat{text-align:right;padding-left:20px;border-left:1px solid var(--line)}
.status-stat .num{display:block;font-size:19px;font-weight:800;font-family:var(--font-num);font-variant-numeric:tabular-nums;line-height:1.2}
.status-stat .lbl{font-size:11.5px;color:var(--text-3);letter-spacing:.06em}

.main-nav{position:sticky;top:0;z-index:100;background:rgba(8,9,11,.94);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line);transition:box-shadow .25s}
.main-nav.is-stuck{box-shadow:0 6px 26px rgba(0,0,0,.55)}
.nav-bar{display:flex;align-items:center;gap:6px;min-height:52px}
.nav-list{display:flex;align-items:center;gap:3px;flex:1;overflow-x:auto;scrollbar-width:none}
.nav-list::-webkit-scrollbar{display:none}
.nav-list a{display:block;white-space:nowrap;padding:8px 15px;border-radius:var(--radius-sm);font-size:15px;font-weight:500;color:var(--text-2);transition:color .18s,background-color .18s}
.nav-list a:hover{color:var(--text);background:var(--bg-2)}
.nav-list a[aria-current="page"]{color:var(--gold-2);background:var(--gold-dim);font-weight:700}
.nav-list a .k{color:var(--gold);font-weight:700}
.nav-cta{flex-shrink:0;display:inline-flex;align-items:center;gap:7px;height:34px;padding:0 15px;margin-left:10px;background:var(--gold);color:#0a0b0d;border-radius:var(--radius-sm);font-size:13.5px;font-weight:700;transition:background-color .2s}
.nav-cta:hover{background:var(--gold-2)}
.nav-cta svg{width:15px;height:15px}
.nav-toggle{display:none;width:38px;height:38px;flex-shrink:0;background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--radius-sm);cursor:pointer;place-items:center}
.nav-toggle svg{width:19px;height:19px;color:var(--text-2)}

.page-banner{background:linear-gradient(135deg,#0e1013 0%,#1a1028 50%,#0e1013 100%);padding:60px 0;text-align:center;border-bottom:1px solid var(--line)}
.page-banner h1{font-size:clamp(28px,4.2vw,44px);margin-bottom:12px;letter-spacing:-.02em}
.page-banner h1 span{color:var(--gold-2)}
.page-banner p{color:var(--text-2);font-size:15.5px;max-width:720px;margin-inline:auto}

.section{padding-block:72px}
.section-head{margin-bottom:44px}
.section-head .kicker{display:block;margin-bottom:13px;font-size:12px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--gold);font-family:var(--font-num)}
.section-head h2{font-size:clamp(22px,3vw,32px);letter-spacing:-.015em}
.section-head p{margin-top:14px;max-width:66ch;color:var(--text-2);font-size:15.5px}

.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:24px;padding:26px 0;background:none;border:0;text-align:left;cursor:pointer;font-size:17px;font-weight:600;color:var(--text);line-height:1.5}
.faq-q:hover{color:var(--gold-2)}
.faq-q .ico{width:22px;height:22px;flex-shrink:0;margin-top:3px;position:relative;border:1px solid var(--line-2);border-radius:50%;transition:border-color .2s,transform .25s}
.faq-q .ico::before,.faq-q .ico::after{content:"";position:absolute;top:50%;left:50%;background:var(--text-2);transform:translate(-50%,-50%)}
.faq-q .ico::before{width:9px;height:1.5px}
.faq-q .ico::after{width:1.5px;height:9px;transition:opacity .2s}
.faq-item.open .faq-q .ico{border-color:var(--gold);transform:rotate(180deg)}
.faq-item.open .faq-q .ico::after{opacity:0}
.faq-item.open .faq-q{color:var(--gold-2)}
.faq-a{display:none;padding:0 46px 30px 0;color:var(--text-2);font-size:15.5px;line-height:1.9}
.faq-item.open .faq-a{display:block}
.faq-a p{margin-bottom:12px}
.faq-a p:last-child{margin-bottom:0}
.faq-a strong{color:var(--gold-2);font-weight:600}
.faq-a code{font-family:var(--font-num);font-size:13.5px;padding:2px 7px;border-radius:4px;background:var(--bg-2);color:var(--text);border:1px solid var(--line)}

.site-footer{border-top:1px solid var(--line);background:var(--bg-1);padding-top:72px;margin-top:80px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1.4fr;gap:56px;padding-bottom:56px}
.foot-col h3{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--text-3);margin-bottom:20px;font-family:var(--font-num);font-weight:700}
.foot-about p{font-size:14px;color:var(--text-2);line-height:1.85;margin-bottom:14px}
.foot-links li{margin-bottom:11px}
.foot-links a{font-size:14px;color:var(--text-2);transition:color .18s}
.foot-links a:hover{color:var(--gold-2)}
.foot-friend{display:flex;flex-wrap:wrap;gap:9px}
.foot-friend a{padding:6px 12px;border-radius:var(--radius-sm);background:var(--bg-2);border:1px solid var(--line);font-size:12.5px;color:var(--text-3);transition:color .18s,border-color .18s}
.foot-friend a:hover{color:var(--text-2);border-color:var(--line-2)}
.foot-note{margin-top:16px;font-size:11.5px;color:#6b727d;line-height:1.7}
.copyright{border-top:1px solid var(--line);padding-block:26px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:12.5px;color:var(--text-3)}
.copyright .cc-links{display:flex;gap:20px}
.copyright a:hover{color:var(--gold-2)}

.to-top{position:fixed;right:24px;bottom:24px;z-index:120;width:46px;height:46px;display:grid;place-items:center;background:var(--gold);color:#0a0b0d;border:0;border-radius:var(--radius-md);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .25s,transform .25s,visibility .25s,background-color .2s;box-shadow:0 4px 18px rgba(0,0,0,.5)}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--gold-2)}
.to-top svg{width:20px;height:20px}

@media (max-width:1024px){
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .header-bar{flex-wrap:wrap;gap:14px;min-height:0;padding-block:14px}
  .status{margin-left:auto}
  .nav-toggle{display:grid}
  .nav-bar{flex-wrap:wrap;padding-block:0}
  .nav-list{display:none;order:3;flex-basis:100%;padding-block:10px;border-top:1px solid var(--line)}
  .nav-list.open{display:flex;flex-direction:column;align-items:stretch;gap:2px}
  .nav-list a{padding:11px 14px}
  .nav-cta{order:2;margin-left:auto}
  .faq-a{padding-right:20px}
  .foot-grid{grid-template-columns:1fr;gap:36px;padding-bottom:40px}
  .copyright{flex-direction:column;align-items:flex-start;gap:12px}
}