:root{--bg:#0B0E14;--bg2:#080A0F;--card:#12151C;--card2:#1A1E27;--hover:#232833;--text:#E2E6ED;--muted:#A8B0C0;--dim:#6B7385;--line:rgba(255,255,255,.10);--line2:rgba(120,160,220,.40);--max:1280px;--nav:74px;--shadow:0 16px 48px rgba(0,0,0,.65)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;overflow-x:hidden}body.ui-locked{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}.skip-link{position:fixed;left:10px;top:-60px;z-index:1000;background:#fff;color:#0B0E14;padding:9px 14px;border-radius:8px}.skip-link:focus{top:10px}.site-header{position:fixed;inset:0 0 auto 0;height:var(--nav);z-index:90;background:rgba(8,10,15,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(16px)}.nav-shell{height:100%;max-width:var(--max);margin:auto;padding:0 24px;display:flex;align-items:center;gap:22px}.brand{display:inline-flex;align-items:center;min-width:max-content}.brand-logo{display:block;width:auto;height:34px;max-width:150px;object-fit:contain}.brand-text{font-size:24px;font-weight:900;letter-spacing:-1px;color:#fff}.desktop-nav{display:flex;align-items:center;gap:2px;flex:1;min-width:0}.desktop-nav a,.text-button{position:relative;border:0;background:transparent;color:var(--muted);padding:10px 12px;border-radius:999px;white-space:nowrap;cursor:pointer}.desktop-nav a:hover,.desktop-nav a:focus-visible,.desktop-nav a.is-active,.text-button:hover,.text-button:focus-visible{background:var(--card2);color:#fff}.desktop-nav a.is-active:after{content:"";position:absolute;left:16px;right:16px;bottom:4px;height:1px;background:#fff}.nav-actions{display:flex;align-items:center;gap:6px}.app-button,.primary-button,.secondary-button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;border-radius:999px;padding:10px 18px;font-weight:800;white-space:nowrap}.app-button,.primary-button{background:#fff;color:#0B0E14}.secondary-button{border:1px solid rgba(200,210,230,.35);color:#fff;background:transparent}.app-button:hover,.primary-button:hover{background:#dfe5ee}.secondary-button:hover{background:var(--hover)}.icon-button{width:44px;height:44px;border:1px solid var(--line);background:var(--card);border-radius:50%;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer}.icon-button span{width:16px;height:1px;background:#fff}.mobile-menu-slot{display:none}.site-main{padding-top:var(--nav);min-height:70vh}.content-wrap{width:min(calc(100% - 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