:root{--bg:#090c12;--surface:#111620;--surface2:#161c28;--line:#252c3a;--text:#f2f5f8;--muted:#8994a5;--green:#4ce0ae;--red:#ff627d;--blue:#6d84ff;--radius:14px}*{box-sizing:border-box}html{background:var(--bg);color:var(--text);font-family:Inter,"SF Pro Display","PingFang SC",system-ui,sans-serif}body{margin:0;min-height:100vh;background:radial-gradient(circle at 75% -10%,#1b294a 0,transparent 30%),var(--bg)}button,input{font:inherit}.topbar{height:68px;padding:0 3vw;display:flex;align-items:center;border-bottom:1px solid var(--line);position:sticky;top:0;background:rgba(9,12,18,.9);backdrop-filter:blur(16px);z-index:10}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:white;font-weight:750;letter-spacing:.2px}.brand img{width:46px;height:28px;object-fit:contain}.brand b{font-size:10px;padding:4px 6px;border:1px solid #436e66;color:var(--green);border-radius:5px}.topbar nav{display:flex;margin-left:8%;gap:30px}.topbar nav 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