@import url("https://fonts.heleeos.com/fonts/font_8007495e.css");:root{--bg:#080e14;--accent:#1890ff;--accent-light:#69c0ff;--ink:#f5f8fc;--muted:rgba(255,255,255,0.55);--line:rgba(255,255,255,0.12);--panel:rgba(255,255,255,0.06);--font-maple-mono:"Maple Mono",ui-monospace,SFMono-Regular,Menlo,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;}*{box-sizing:border-box;}html{scroll-behavior:smooth;}body{margin:0;min-height:100vh;color:var(--ink);font-family:var(--font-maple-mono);line-height:1.6;background:var(--bg);}a{color:inherit;text-decoration:none;}button{font:inherit;cursor:pointer;background:none;border:none;}img{display:block;max-width:100%;}.bg-layer{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none;}.bg-image{position:absolute;inset:0;background:url("https://oss.heleeos.com/img/rain.jpg") center / cover no-repeat;transform:scale(1.06);}.bg-shade{position:absolute;inset:0;background:linear-gradient( 180deg,rgba(8,14,20,0.25) 0%,rgba(8,14,20,0.78) 55%,rgba(8,14,20,0.96) 100% );}.site-nav{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;padding:18px clamp(20px,4vw,48px);background:rgba(8,14,20,0.45);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);font-size:13px;letter-spacing:0.06em;}.site-nav__brand{font-weight:700;color:var(--ink);}.site-nav__brand-dot{color:var(--accent);margin-right:6px;}.site-nav__links{display:flex;gap:28px;color:var(--muted);}.site-nav__link{transition:color 160ms ease;}.site-nav__link:hover{color:var(--ink);}.site-nav__link--disabled{color:rgba(255,255,255,0.28);cursor:not-allowed;}.site-foot{display:flex;justify-content:space-between;align-items:center;padding:22px clamp(20px,4vw,48px);margin-top:56px;border-top:1px solid var(--line);font-size:11px;color:var(--muted);letter-spacing:0.04em;}