:root{--bg: #0B0E14;--bg2: #12161E;--bg3: #1A1F2A;--fg: #F0F1F3;--fg2: #9BA1AF;--fg3: #6B7280;--accent: #2563EB;--accent-h: #3B82F6;--orange: #F97316;--orange-h: #FB923C;--border: rgba(255,255,255,.08);--border2: rgba(255,255,255,.12);--border-accent: rgba(37,99,235,.3);--radius: 8px;--max: 1200px;--pad: 100px;font-family:PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,system-ui,-apple-system,sans-serif;color:var(--fg);background:var(--bg)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}.container{width:min(var(--max),calc(100vw - 48px));margin:0 auto}.nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:14px 0;transition:background .25s}.nav.on{background:#0b0e14f0;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}.nav 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