@font-face{font-family:"Saira Condensed";font-style:normal;font-weight:600;font-display:block;src:url(../font/SairaCondensed-600.woff2) format("woff2")}
@font-face{font-family:"Cinzel";font-style:normal;font-weight:600;font-display:block;src:url(../font/Cinzel-600.woff2) format("woff2")}
*{box-sizing:border-box}
html,body{margin:0;padding:0;height:100%}
body{font-family:"PingFang SC","Microsoft YaHei UI","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;background:#000;color:#fff}
a{color:inherit;text-decoration:none}
.site-header{position:sticky;top:0;z-index:100;width:100%;background:#0a0a0a;border-bottom:1px solid #222}
.site-header-inner{width:100%;box-sizing:border-box;margin:0;padding:10px 0;display:flex;align-items:flex-end;justify-content:space-between;gap:0;min-height:48px}
.site-header-left{display:flex;align-items:flex-end;justify-content:flex-start;gap:0;flex:0 1 auto;min-width:0;padding-left:max(10px,env(safe-area-inset-left))}
.site-nav-label{font-size:16px;font-weight:700;line-height:1;letter-spacing:0.02em;color:#fff;white-space:nowrap}
.site-nav-research-link{display:inline-flex;align-items:flex-end;gap:.35em;line-height:1;cursor:pointer}
.site-nav-research-link .site-nav-brand-word,.site-nav-research-link [data-i18n]{line-height:1}
.site-nav-research-link:hover .site-nav-brand-word,.site-nav-research-link:hover [data-i18n]{color:#76B900}
.site-nav-brand-word{font-family:"Cinzel","Times New Roman",serif;font-weight:600;font-size:18px;color:#fff;letter-spacing:0.02em}
.site-header-right{display:flex;align-items:flex-end;justify-content:flex-end;flex:0 0 auto;gap:1rem;margin-left:auto;padding-right:max(10px,env(safe-area-inset-right))}
.site-header-auth{display:inline-flex;align-items:flex-end;font-size:15px;font-weight:600;line-height:1;padding:0 2px 2px;border-bottom:2px solid transparent;white-space:nowrap}
.site-header-auth:hover{border-bottom-color:#76B900;color:#76B900}
.site-lang-select{align-self:flex-end;margin:0;padding:4px 28px 4px 10px;font-size:14px;font-weight:500;line-height:1.2;font-family:inherit;color:#e8e8e8;background:#1a1a1a url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%239a9a9a' d='M1 1l5 5 5-5'/%3E%3C/svg%3E") no-repeat right 8px center;border:1px solid #444;border-radius:4px;cursor:pointer;appearance:none;-webkit-appearance:none;min-height:32px;box-sizing:border-box}
.site-lang-select:hover{border-color:#76B900;color:#fff}
.site-lang-select:focus{outline:2px solid #76B900;outline-offset:2px}
.site-lang-select option{color:#111;background:#fff}
.hero{container:loonghero / inline-size;min-height:calc(100vh - 48px);background:#000;display:flex;flex-direction:column;align-items:center;padding:max(0px,calc(8vh - 20px)) 24px 48px;text-align:center}
.hero-title{font-family:"Saira Condensed","Arial Narrow",Impact,sans-serif;font-size:112px;line-height:1.05;font-weight:600;color:#76B900;letter-spacing:0.08em;margin:-20px 0 0;font-synthesis:none;text-rendering:optimizeLegibility}
.hero-tagline{margin:13px 0 0;max-width:960px;font-size:40px;line-height:1.25;font-weight:800;color:#fff;letter-spacing:0.02em;font-family:"PingFang SC","Microsoft YaHei UI","Microsoft YaHei",system-ui,sans-serif}
@keyframes loongFlipTick{0%{transform:perspective(220px) rotateX(-82deg);opacity:.25}50%{transform:perspective(220px) rotateX(6deg);opacity:1}100%{transform:perspective(220px) rotateX(0);opacity:1}}
@media (prefers-reduced-motion:reduce){.loong-flip-cell.is-flip .loong-flip-char{animation:none!important}}
.loong-flipboard{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:clamp(2px,0.7cqi,5px);width:100%;max-width:100%;margin:clamp(7px,1.1vh,14px) auto 0;padding:0 clamp(4px,1cqi,8px);box-sizing:border-box;overflow-x:auto;-webkit-overflow-scrolling:touch}
.loong-flip-cell{position:relative;width:clamp(24px,6.8cqi,54px);height:clamp(36px,10cqi,74px);flex:0 0 auto;perspective:240px;background:#262626;border-radius:6px;border:1px solid #0c0c0c;box-shadow:inset 0 1px 0 rgba(255,255,255,.07),inset 0 -8px 22px rgba(0,0,0,.5)}
.loong-flip-cell-in{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;border-radius:5px;overflow:hidden}
.loong-flip-char{display:block;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;font-weight:800;font-size:clamp(0.95rem,4.2cqi,2.1rem);line-height:1;color:#ededed;text-shadow:0 1px 0 rgba(0,0,0,.55);transform-origin:50% 50%}
.loong-flip-cell.is-flip .loong-flip-char{animation:loongFlipTick .34s ease both}
.loong-flip-hinge{position:absolute;left:8%;right:8%;top:50%;margin-top:-1px;height:2px;background:linear-gradient(180deg,#050505 0,#050505 50%,rgba(255,255,255,.06) 50%,rgba(255,255,255,.06) 100%);pointer-events:none;z-index:2;border-radius:1px}
.hero-split{display:flex;flex-direction:row;flex-wrap:wrap;justify-content:center;align-items:stretch;gap:150px;width:100%;max-width:1600px;margin-top:30px}
.hero-split-col{flex:1 1 364px;max-width:676px;display:flex;align-items:center;justify-content:center}
.hero-topo-svg{display:block;width:100%;height:auto;max-height:min(62.4vh,561.6px);opacity:0.92}
.site-footer{border-top:1px solid #333;background:#000;padding:24px 24px 40px}
.site-footer-inner{width:100%;box-sizing:border-box;padding:0 24px;display:flex;align-items:center;gap:12px;flex-wrap:wrap;text-align:left;font-size:14px;font-weight:500;color:#9a9a9a;letter-spacing:0.02em}
.site-footer-logo{display:flex;line-height:0;flex-shrink:0}
.site-footer-logo-img{display:block;width:32px;height:32px}
.site-footer-copy{display:flex;flex-direction:row;flex-wrap:wrap;align-items:baseline;column-gap:.35em;line-height:1.3;min-width:0}
.site-footer-copy-line{display:inline}
@container loonghero (max-width:45rem){.hero-split{flex-direction:column;align-items:center;gap:clamp(2rem,5cqi,4rem);margin-top:max(0.5rem,calc(clamp(2rem,6cqi,3.75rem) - 50px));max-width:min(100%,36rem)}.hero-split-col{flex:1 1 auto;max-width:100%;width:100%}.hero-title{font-size:clamp(2.5rem,12cqi,6.75rem);margin:-20px 0 0}.hero-tagline{margin:max(0px,calc(clamp(1rem,3cqi,1.75rem) - 15px)) 0 0;font-size:clamp(1.05rem,4.5cqi,1.5rem);padding:0 clamp(0.25rem,1.5cqi,0.5rem)}.hero-topo-svg{max-height:min(50.4vh,min(28.8rem,60cqi))}}
@media (hover:none) and (pointer:coarse){.site-header{padding-bottom:2px}.site-header-inner{align-items:flex-end;padding-top:5px;padding-bottom:10px;min-height:48px}.site-header-left{align-items:flex-end}.site-header-right{align-items:flex-end}.site-nav-label{align-self:flex-end;line-height:1}.site-header-auth{align-self:flex-end;min-height:44px;display:inline-flex;align-items:flex-end;justify-content:center;padding:0 10px 0;box-sizing:border-box;border-bottom:none}.site-header-auth:hover{border-bottom:none;color:#76B900;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px;text-decoration-color:#76B900}.site-lang-select{align-self:flex-end;min-height:44px;margin:0}.hero{min-height:calc(100vh - 48px);padding-top:max(0px,calc(max(5dvh,2.5rem) - 20px));padding-right:max(0px,env(safe-area-inset-right));padding-bottom:2rem;padding-left:max(0px,env(safe-area-inset-left))}.hero-title{margin:0;font-size:clamp(3.25rem,15.6cqi,8.775rem)}.hero-tagline{margin:10px 0 0;font-size:clamp(1.365rem,5.85cqi,1.95rem)}.hero-split{flex-direction:column;align-items:center;align-self:stretch;width:100%;max-width:none;margin-top:max(0px,calc(clamp(2rem,6cqi,5rem) - 50px));padding-left:0;padding-right:0;box-sizing:border-box;gap:clamp(2rem,5cqi,4rem)}.hero-split-col{max-width:none;width:100%}.hero-topo-svg{max-height:min(66vh,min(42rem,78cqi))}.site-footer{padding:24px 0 40px}.site-footer-inner{padding-left:max(0px,env(safe-area-inset-left));padding-right:max(0px,env(safe-area-inset-right))}}
@media (hover:none) and (pointer:coarse) and (orientation:portrait){.site-header-inner{align-items:flex-start;padding:6px 0;min-height:auto}.site-header-left{flex:1 1 auto;min-width:0;padding-left:max(6px,env(safe-area-inset-left));padding-right:6px;align-items:flex-start}.site-nav-label{font-size:14px;line-height:1}.site-nav-research-link{flex-direction:column;align-items:flex-start;gap:8px;line-height:1;white-space:nowrap}.site-nav-brand-word{font-size:16px}.site-header-right{flex-direction:column;align-items:flex-end;justify-content:flex-start;gap:8px;flex-shrink:0}.site-lang-select{order:1;align-self:flex-end;min-height:0;height:auto;line-height:1;padding:2px 22px 2px 8px;font-size:13px;margin:0}.site-header-auth{order:2;align-self:flex-end;min-height:0;padding:0 2px;font-size:13px;line-height:1}.site-header-auth:hover{text-underline-offset:3px}.hero{min-height:calc(100vh - 58px)}.hero-split{margin-top:20px}.site-footer-inner{flex-wrap:nowrap;align-items:center;gap:10px}.site-footer-copy{flex-direction:column;align-items:flex-start;row-gap:2px;column-gap:0;flex:1 1 auto}}
@media (hover:none) and (pointer:coarse) and (orientation:landscape){.site-header-inner{padding-top:0;padding-bottom:0;min-height:40px}.site-header-right{align-items:flex-end}.site-lang-select{align-self:flex-end;min-height:0;height:auto;line-height:1;padding:2px 22px 2px 8px;font-size:13px;margin:0}.hero{min-height:calc(100vh - 43px)}.hero-title{font-size:80px}.hero-topo-svg{max-height:min(105.6vh,min(67.2rem,124.8cqi))}}
@media (orientation:portrait) and (min-width:600px) and (max-width:1366px){.hero-title{font-size:80px;line-height:1.05}}