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:root{--bg:#070d19;--panel:#101a2a;--line:#223047;--text:#f1f6ff;--muted:#94a4bb;--cyan:#4de7e0;--blue:#287aff;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,"Segoe UI","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.75}a{color:inherit;text-decoration:none}button{font:inherit}button,a,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--cyan);outline-offset:6px}button{color:inherit}::selection{background:#4de7e044}.wrap{width:min(var(--max),calc(100% - 80px));margin-inline:auto}.topbar{height:88px;position:sticky;top:0;z-index:20;background:#070d19ec;border-bottom:1px solid 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