:root{--bg:#050505;--deep:#0a0a0a;--card:#111;--hover:#191919;--light:#efefef;--title:#fafafa;--text:#d8d8d8;--muted:#a3a3a3;--dark:#151515;--border:rgba(255,255,255,.14);--border-hi:rgba(255,255,255,.42);--g-dark:linear-gradient(135deg,#050505 0%,#171717 52%,#090909 100%);--g-screen:linear-gradient(120deg,#f5f5f5 0%,#bdbdbd 48%,#fff 100%);--g-card:linear-gradient(160deg,#1b1b1b 0%,#0d0d0d 70%,#050505 100%);--max:1320px;--header:102px;--z-header:40;--z-bottom:35;--z-overlay:70;--z-drawer:80;--z-search:65}*{box-sizing:border-box}html{background:var(--bg);scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.82;overflow-x:hidden}body.modal-open{overflow:hidden}img{display:block;max-width:100%;height:auto}a,button{position:relative;z-index:2;pointer-events:auto;touch-action:manipulation}a{color:inherit;text-decoration:none}button,input{font:inherit}.skip-link{position:fixed;left:12px;top:-60px;background:#fff;color:#000;padding:10px 14px;z-index:120}.skip-link:focus{top:12px}.site-header{position:fixed;inset:0 0 auto;z-index:var(--z-header);height:var(--header)}.brand-rail{height:68px;background:linear-gradient(90deg,#050505,#171717);border-bottom:1px solid rgba(255,255,255,.3)}.channel-rail{height:34px;background:#090909;border-bottom:1px solid var(--border)}.header-inner,.footer-inner,.footer-legal,.page-wrap{width:min(var(--max),calc(100% - 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