:root{--bg:#0a0f1c;--panel:#111a2e;--line:#1e2b47;--acc:#c6662f;--gold:#d3a84b;--txt:#dbe4f3;--mut:#8b9ab4}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--txt);font:14px/1.7 "Microsoft YaHei","PingFang SC",Arial,sans-serif}a{color:inherit;text-decoration:none}button,input{font:inherit}.side{position:fixed;inset:0 auto 0 0;width:234px;background:#0d1322;border-right:1px solid var(--line);padding:30px 22px;display:flex;flex-direction:column;gap:34px;z-index:50}.brand{display:flex;gap:11px;align-items:center}.mark{width:40px;height:40px;background:var(--acc);color:#fff;display:grid;place-items:center;font:800 15px Georgia;border-radius:50% 50% 50% 9px}.brand b{display:block;font-size:15px;line-height:1.2;word-break:break-all}.brand small{display:block;color:#5f6f8f;font:8px Arial;letter-spacing:.18em;margin-top:5px}.side nav{display:flex;flex-direction:column;border-top:1px solid var(--line)}.side nav a{padding:13px 4px;border-bottom:1px 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